attribute-manager: Pass the full IKE_SA to provider methods
[strongswan.git] / src / libcharon / sa / ike_sa.c
1 /*
2 * Copyright (C) 2006-2014 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 /*
20 * Copyright (c) 2014 Volker RĂ¼melin
21 *
22 * Permission is hereby granted, free of charge, to any person obtaining a copy
23 * of this software and associated documentation files (the "Software"), to deal
24 * in the Software without restriction, including without limitation the rights
25 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
26 * copies of the Software, and to permit persons to whom the Software is
27 * furnished to do so, subject to the following conditions:
28 *
29 * The above copyright notice and this permission notice shall be included in
30 * all copies or substantial portions of the Software.
31 *
32 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
33 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
34 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
35 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
36 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
37 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
38 * THE SOFTWARE.
39 */
40
41 #include <string.h>
42 #include <sys/stat.h>
43 #include <errno.h>
44 #include <time.h>
45
46 #include "ike_sa.h"
47
48 #include <library.h>
49 #include <hydra.h>
50 #include <daemon.h>
51 #include <collections/array.h>
52 #include <utils/lexparser.h>
53 #include <processing/jobs/retransmit_job.h>
54 #include <processing/jobs/delete_ike_sa_job.h>
55 #include <processing/jobs/send_dpd_job.h>
56 #include <processing/jobs/send_keepalive_job.h>
57 #include <processing/jobs/rekey_ike_sa_job.h>
58 #include <processing/jobs/retry_initiate_job.h>
59 #include <sa/ikev2/tasks/ike_auth_lifetime.h>
60
61 #ifdef ME
62 #include <sa/ikev2/tasks/ike_me.h>
63 #include <processing/jobs/initiate_mediation_job.h>
64 #endif
65
66 ENUM(ike_sa_state_names, IKE_CREATED, IKE_DESTROYING,
67 "CREATED",
68 "CONNECTING",
69 "ESTABLISHED",
70 "PASSIVE",
71 "REKEYING",
72 "DELETING",
73 "DESTROYING",
74 );
75
76 typedef struct private_ike_sa_t private_ike_sa_t;
77 typedef struct attribute_entry_t attribute_entry_t;
78
79 /**
80 * Private data of an ike_sa_t object.
81 */
82 struct private_ike_sa_t {
83
84 /**
85 * Public members
86 */
87 ike_sa_t public;
88
89 /**
90 * Identifier for the current IKE_SA.
91 */
92 ike_sa_id_t *ike_sa_id;
93
94 /**
95 * IKE version of this SA.
96 */
97 ike_version_t version;
98
99 /**
100 * unique numerical ID for this IKE_SA.
101 */
102 u_int32_t unique_id;
103
104 /**
105 * Current state of the IKE_SA
106 */
107 ike_sa_state_t state;
108
109 /**
110 * IKE configuration used to set up this IKE_SA
111 */
112 ike_cfg_t *ike_cfg;
113
114 /**
115 * Peer and authentication information to establish IKE_SA.
116 */
117 peer_cfg_t *peer_cfg;
118
119 /**
120 * currently used authentication ruleset, local
121 */
122 auth_cfg_t *my_auth;
123
124 /**
125 * currently used authentication constraints, remote
126 */
127 auth_cfg_t *other_auth;
128
129 /**
130 * Array of completed local authentication rounds (as auth_cfg_t)
131 */
132 array_t *my_auths;
133
134 /**
135 * Array of completed remote authentication rounds (as auth_cfg_t)
136 */
137 array_t *other_auths;
138
139 /**
140 * Selected IKE proposal
141 */
142 proposal_t *proposal;
143
144 /**
145 * Juggles tasks to process messages
146 */
147 task_manager_t *task_manager;
148
149 /**
150 * Address of local host
151 */
152 host_t *my_host;
153
154 /**
155 * Address of remote host
156 */
157 host_t *other_host;
158
159 #ifdef ME
160 /**
161 * Are we mediation server
162 */
163 bool is_mediation_server;
164
165 /**
166 * Server reflexive host
167 */
168 host_t *server_reflexive_host;
169
170 /**
171 * Connect ID
172 */
173 chunk_t connect_id;
174 #endif /* ME */
175
176 /**
177 * Identification used for us
178 */
179 identification_t *my_id;
180
181 /**
182 * Identification used for other
183 */
184 identification_t *other_id;
185
186 /**
187 * set of extensions the peer supports
188 */
189 ike_extension_t extensions;
190
191 /**
192 * set of condition flags currently enabled for this IKE_SA
193 */
194 ike_condition_t conditions;
195
196 /**
197 * Array containing the child sa's of the current IKE_SA.
198 */
199 array_t *child_sas;
200
201 /**
202 * keymat of this IKE_SA
203 */
204 keymat_t *keymat;
205
206 /**
207 * Virtual IPs on local host
208 */
209 array_t *my_vips;
210
211 /**
212 * Virtual IPs on remote host
213 */
214 array_t *other_vips;
215
216 /**
217 * List of configuration attributes (attribute_entry_t)
218 */
219 array_t *attributes;
220
221 /**
222 * list of peer's addresses, additional ones transmitted via MOBIKE
223 */
224 array_t *peer_addresses;
225
226 /**
227 * previously value of received DESTINATION_IP hash
228 */
229 chunk_t nat_detection_dest;
230
231 /**
232 * number pending UPDATE_SA_ADDRESS (MOBIKE)
233 */
234 u_int32_t pending_updates;
235
236 /**
237 * NAT keep alive interval
238 */
239 u_int32_t keepalive_interval;
240
241 /**
242 * interval for retries during initiation (e.g. if DNS resolution failed),
243 * 0 to disable (default)
244 */
245 u_int32_t retry_initiate_interval;
246
247 /**
248 * TRUE if a retry_initiate_job has been queued
249 */
250 bool retry_initiate_queued;
251
252 /**
253 * Timestamps for this IKE_SA
254 */
255 u_int32_t stats[STAT_MAX];
256
257 /**
258 * how many times we have retried so far (keyingtries)
259 */
260 u_int32_t keyingtry;
261
262 /**
263 * local host address to be used for IKE, set via MIGRATE kernel message
264 */
265 host_t *local_host;
266
267 /**
268 * remote host address to be used for IKE, set via MIGRATE kernel message
269 */
270 host_t *remote_host;
271
272 /**
273 * Flush auth configs once established?
274 */
275 bool flush_auth_cfg;
276
277 /**
278 * Maximum length of a single fragment, 0 for address-specific defaults
279 */
280 size_t fragment_size;
281 };
282
283 /**
284 * Entry to maintain install configuration attributes during IKE_SA lifetime
285 */
286 struct attribute_entry_t {
287 /** handler used to install this attribute */
288 attribute_handler_t *handler;
289 /** attribute type */
290 configuration_attribute_type_t type;
291 /** attribute data */
292 chunk_t data;
293 };
294
295 /**
296 * get the time of the latest traffic processed by the kernel
297 */
298 static time_t get_use_time(private_ike_sa_t* this, bool inbound)
299 {
300 enumerator_t *enumerator;
301 child_sa_t *child_sa;
302 time_t use_time, current;
303
304 if (inbound)
305 {
306 use_time = this->stats[STAT_INBOUND];
307 }
308 else
309 {
310 use_time = this->stats[STAT_OUTBOUND];
311 }
312
313 enumerator = array_create_enumerator(this->child_sas);
314 while (enumerator->enumerate(enumerator, &child_sa))
315 {
316 child_sa->get_usestats(child_sa, inbound, &current, NULL, NULL);
317 use_time = max(use_time, current);
318 }
319 enumerator->destroy(enumerator);
320
321 return use_time;
322 }
323
324 METHOD(ike_sa_t, get_unique_id, u_int32_t,
325 private_ike_sa_t *this)
326 {
327 return this->unique_id;
328 }
329
330 METHOD(ike_sa_t, get_name, char*,
331 private_ike_sa_t *this)
332 {
333 if (this->peer_cfg)
334 {
335 return this->peer_cfg->get_name(this->peer_cfg);
336 }
337 return "(unnamed)";
338 }
339
340 METHOD(ike_sa_t, get_statistic, u_int32_t,
341 private_ike_sa_t *this, statistic_t kind)
342 {
343 if (kind < STAT_MAX)
344 {
345 return this->stats[kind];
346 }
347 return 0;
348 }
349
350 METHOD(ike_sa_t, set_statistic, void,
351 private_ike_sa_t *this, statistic_t kind, u_int32_t value)
352 {
353 if (kind < STAT_MAX)
354 {
355 this->stats[kind] = value;
356 }
357 }
358
359 METHOD(ike_sa_t, get_my_host, host_t*,
360 private_ike_sa_t *this)
361 {
362 return this->my_host;
363 }
364
365 METHOD(ike_sa_t, set_my_host, void,
366 private_ike_sa_t *this, host_t *me)
367 {
368 DESTROY_IF(this->my_host);
369 this->my_host = me;
370 }
371
372 METHOD(ike_sa_t, get_other_host, host_t*,
373 private_ike_sa_t *this)
374 {
375 return this->other_host;
376 }
377
378 METHOD(ike_sa_t, set_other_host, void,
379 private_ike_sa_t *this, host_t *other)
380 {
381 DESTROY_IF(this->other_host);
382 this->other_host = other;
383 }
384
385 METHOD(ike_sa_t, get_peer_cfg, peer_cfg_t*,
386 private_ike_sa_t *this)
387 {
388 return this->peer_cfg;
389 }
390
391 METHOD(ike_sa_t, set_peer_cfg, void,
392 private_ike_sa_t *this, peer_cfg_t *peer_cfg)
393 {
394 peer_cfg->get_ref(peer_cfg);
395 DESTROY_IF(this->peer_cfg);
396 this->peer_cfg = peer_cfg;
397
398 if (this->ike_cfg == NULL)
399 {
400 this->ike_cfg = peer_cfg->get_ike_cfg(peer_cfg);
401 this->ike_cfg->get_ref(this->ike_cfg);
402 }
403 }
404
405 METHOD(ike_sa_t, get_auth_cfg, auth_cfg_t*,
406 private_ike_sa_t *this, bool local)
407 {
408 if (local)
409 {
410 return this->my_auth;
411 }
412 return this->other_auth;
413 }
414
415 METHOD(ike_sa_t, add_auth_cfg, void,
416 private_ike_sa_t *this, bool local, auth_cfg_t *cfg)
417 {
418 if (local)
419 {
420 array_insert(this->my_auths, ARRAY_TAIL, cfg);
421 }
422 else
423 {
424 array_insert(this->other_auths, ARRAY_TAIL, cfg);
425 }
426 }
427
428 METHOD(ike_sa_t, create_auth_cfg_enumerator, enumerator_t*,
429 private_ike_sa_t *this, bool local)
430 {
431 if (local)
432 {
433 return array_create_enumerator(this->my_auths);
434 }
435 return array_create_enumerator(this->other_auths);
436 }
437
438 /**
439 * Flush the stored authentication round information
440 */
441 static void flush_auth_cfgs(private_ike_sa_t *this)
442 {
443 auth_cfg_t *cfg;
444
445 this->my_auth->purge(this->my_auth, FALSE);
446 this->other_auth->purge(this->other_auth, FALSE);
447
448 while (array_remove(this->my_auths, ARRAY_TAIL, &cfg))
449 {
450 cfg->destroy(cfg);
451 }
452 while (array_remove(this->other_auths, ARRAY_TAIL, &cfg))
453 {
454 cfg->destroy(cfg);
455 }
456 }
457
458 METHOD(ike_sa_t, get_proposal, proposal_t*,
459 private_ike_sa_t *this)
460 {
461 return this->proposal;
462 }
463
464 METHOD(ike_sa_t, set_proposal, void,
465 private_ike_sa_t *this, proposal_t *proposal)
466 {
467 DESTROY_IF(this->proposal);
468 this->proposal = proposal->clone(proposal);
469 }
470
471 METHOD(ike_sa_t, set_message_id, void,
472 private_ike_sa_t *this, bool initiate, u_int32_t mid)
473 {
474 if (initiate)
475 {
476 this->task_manager->reset(this->task_manager, mid, UINT_MAX);
477 }
478 else
479 {
480 this->task_manager->reset(this->task_manager, UINT_MAX, mid);
481 }
482 }
483
484 METHOD(ike_sa_t, send_keepalive, void,
485 private_ike_sa_t *this)
486 {
487 send_keepalive_job_t *job;
488 time_t last_out, now, diff;
489
490 if (!(this->conditions & COND_NAT_HERE) || this->keepalive_interval == 0)
491 { /* disable keep alives if we are not NATed anymore */
492 return;
493 }
494
495 last_out = get_use_time(this, FALSE);
496 now = time_monotonic(NULL);
497
498 diff = now - last_out;
499
500 if (diff >= this->keepalive_interval)
501 {
502 packet_t *packet;
503 chunk_t data;
504
505 packet = packet_create();
506 packet->set_source(packet, this->my_host->clone(this->my_host));
507 packet->set_destination(packet, this->other_host->clone(this->other_host));
508 data.ptr = malloc(1);
509 data.ptr[0] = 0xFF;
510 data.len = 1;
511 packet->set_data(packet, data);
512 DBG1(DBG_IKE, "sending keep alive to %#H", this->other_host);
513 charon->sender->send_no_marker(charon->sender, packet);
514 diff = 0;
515 }
516 job = send_keepalive_job_create(this->ike_sa_id);
517 lib->scheduler->schedule_job(lib->scheduler, (job_t*)job,
518 this->keepalive_interval - diff);
519 }
520
521 METHOD(ike_sa_t, get_ike_cfg, ike_cfg_t*,
522 private_ike_sa_t *this)
523 {
524 return this->ike_cfg;
525 }
526
527 METHOD(ike_sa_t, set_ike_cfg, void,
528 private_ike_sa_t *this, ike_cfg_t *ike_cfg)
529 {
530 ike_cfg->get_ref(ike_cfg);
531 this->ike_cfg = ike_cfg;
532 }
533
534 METHOD(ike_sa_t, enable_extension, void,
535 private_ike_sa_t *this, ike_extension_t extension)
536 {
537 this->extensions |= extension;
538 }
539
540 METHOD(ike_sa_t, supports_extension, bool,
541 private_ike_sa_t *this, ike_extension_t extension)
542 {
543 return (this->extensions & extension) != FALSE;
544 }
545
546 METHOD(ike_sa_t, has_condition, bool,
547 private_ike_sa_t *this, ike_condition_t condition)
548 {
549 return (this->conditions & condition) != FALSE;
550 }
551
552 METHOD(ike_sa_t, set_condition, void,
553 private_ike_sa_t *this, ike_condition_t condition, bool enable)
554 {
555 if (has_condition(this, condition) != enable)
556 {
557 if (enable)
558 {
559 this->conditions |= condition;
560 switch (condition)
561 {
562 case COND_NAT_HERE:
563 DBG1(DBG_IKE, "local host is behind NAT, sending keep alives");
564 this->conditions |= COND_NAT_ANY;
565 send_keepalive(this);
566 break;
567 case COND_NAT_THERE:
568 DBG1(DBG_IKE, "remote host is behind NAT");
569 this->conditions |= COND_NAT_ANY;
570 break;
571 case COND_NAT_FAKE:
572 DBG1(DBG_IKE, "faking NAT situation to enforce UDP encapsulation");
573 this->conditions |= COND_NAT_ANY;
574 break;
575 default:
576 break;
577 }
578 }
579 else
580 {
581 this->conditions &= ~condition;
582 switch (condition)
583 {
584 case COND_NAT_HERE:
585 case COND_NAT_FAKE:
586 case COND_NAT_THERE:
587 set_condition(this, COND_NAT_ANY,
588 has_condition(this, COND_NAT_HERE) ||
589 has_condition(this, COND_NAT_THERE) ||
590 has_condition(this, COND_NAT_FAKE));
591 break;
592 default:
593 break;
594 }
595 }
596 }
597 }
598
599 METHOD(ike_sa_t, send_dpd, status_t,
600 private_ike_sa_t *this)
601 {
602 job_t *job;
603 time_t diff, delay;
604 bool task_queued = FALSE;
605
606 if (this->state == IKE_PASSIVE)
607 {
608 return INVALID_STATE;
609 }
610 delay = this->peer_cfg->get_dpd(this->peer_cfg);
611 if (this->task_manager->busy(this->task_manager))
612 {
613 /* an exchange is in the air, no need to start a DPD check */
614 diff = 0;
615 }
616 else
617 {
618 /* check if there was any inbound traffic */
619 time_t last_in, now;
620 last_in = get_use_time(this, TRUE);
621 now = time_monotonic(NULL);
622 diff = now - last_in;
623 if (!delay || diff >= delay)
624 {
625 /* too long ago, initiate dead peer detection */
626 DBG1(DBG_IKE, "sending DPD request");
627 this->task_manager->queue_dpd(this->task_manager);
628 task_queued = TRUE;
629 diff = 0;
630 }
631 }
632 /* recheck in "interval" seconds */
633 if (delay)
634 {
635 job = (job_t*)send_dpd_job_create(this->ike_sa_id);
636 lib->scheduler->schedule_job(lib->scheduler, job, delay - diff);
637 }
638 if (task_queued)
639 {
640 return this->task_manager->initiate(this->task_manager);
641 }
642 return SUCCESS;
643 }
644
645 METHOD(ike_sa_t, get_state, ike_sa_state_t,
646 private_ike_sa_t *this)
647 {
648 return this->state;
649 }
650
651 METHOD(ike_sa_t, set_state, void,
652 private_ike_sa_t *this, ike_sa_state_t state)
653 {
654 bool trigger_dpd = FALSE;
655
656 DBG2(DBG_IKE, "IKE_SA %s[%d] state change: %N => %N",
657 get_name(this), this->unique_id,
658 ike_sa_state_names, this->state,
659 ike_sa_state_names, state);
660
661 switch (state)
662 {
663 case IKE_ESTABLISHED:
664 {
665 if (this->state == IKE_CONNECTING ||
666 this->state == IKE_PASSIVE)
667 {
668 job_t *job;
669 u_int32_t t;
670
671 /* calculate rekey, reauth and lifetime */
672 this->stats[STAT_ESTABLISHED] = time_monotonic(NULL);
673
674 /* schedule rekeying if we have a time which is smaller than
675 * an already scheduled rekeying */
676 t = this->peer_cfg->get_rekey_time(this->peer_cfg, TRUE);
677 if (t && (this->stats[STAT_REKEY] == 0 ||
678 (this->stats[STAT_REKEY] > t + this->stats[STAT_ESTABLISHED])))
679 {
680 this->stats[STAT_REKEY] = t + this->stats[STAT_ESTABLISHED];
681 job = (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, FALSE);
682 lib->scheduler->schedule_job(lib->scheduler, job, t);
683 DBG1(DBG_IKE, "scheduling rekeying in %ds", t);
684 }
685 t = this->peer_cfg->get_reauth_time(this->peer_cfg, TRUE);
686 if (t && (this->stats[STAT_REAUTH] == 0 ||
687 (this->stats[STAT_REAUTH] > t + this->stats[STAT_ESTABLISHED])))
688 {
689 this->stats[STAT_REAUTH] = t + this->stats[STAT_ESTABLISHED];
690 job = (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE);
691 lib->scheduler->schedule_job(lib->scheduler, job, t);
692 DBG1(DBG_IKE, "scheduling reauthentication in %ds", t);
693 }
694 t = this->peer_cfg->get_over_time(this->peer_cfg);
695 if (this->stats[STAT_REKEY] || this->stats[STAT_REAUTH])
696 {
697 if (this->stats[STAT_REAUTH] == 0)
698 {
699 this->stats[STAT_DELETE] = this->stats[STAT_REKEY];
700 }
701 else if (this->stats[STAT_REKEY] == 0)
702 {
703 this->stats[STAT_DELETE] = this->stats[STAT_REAUTH];
704 }
705 else
706 {
707 this->stats[STAT_DELETE] = min(this->stats[STAT_REKEY],
708 this->stats[STAT_REAUTH]);
709 }
710 this->stats[STAT_DELETE] += t;
711 t = this->stats[STAT_DELETE] - this->stats[STAT_ESTABLISHED];
712 job = (job_t*)delete_ike_sa_job_create(this->ike_sa_id, TRUE);
713 lib->scheduler->schedule_job(lib->scheduler, job, t);
714 DBG1(DBG_IKE, "maximum IKE_SA lifetime %ds", t);
715 }
716 trigger_dpd = this->peer_cfg->get_dpd(this->peer_cfg);
717 if (trigger_dpd)
718 {
719 /* Some peers delay the DELETE after rekeying an IKE_SA.
720 * If this delay is longer than our DPD delay, we would
721 * send a DPD request here. The IKE_SA is not ready to do
722 * so yet, so prevent that. */
723 this->stats[STAT_INBOUND] = this->stats[STAT_ESTABLISHED];
724 }
725 }
726 break;
727 }
728 default:
729 break;
730 }
731 charon->bus->ike_state_change(charon->bus, &this->public, state);
732 this->state = state;
733
734 if (trigger_dpd)
735 {
736 if (supports_extension(this, EXT_DPD))
737 {
738 send_dpd(this);
739 }
740 else
741 {
742 DBG1(DBG_IKE, "DPD not supported by peer, disabled");
743 }
744 }
745 }
746
747 METHOD(ike_sa_t, reset, void,
748 private_ike_sa_t *this)
749 {
750 /* the responder ID is reset, as peer may choose another one */
751 if (this->ike_sa_id->is_initiator(this->ike_sa_id))
752 {
753 this->ike_sa_id->set_responder_spi(this->ike_sa_id, 0);
754 }
755
756 set_state(this, IKE_CREATED);
757
758 flush_auth_cfgs(this);
759
760 this->keymat->destroy(this->keymat);
761 this->keymat = keymat_create(this->version,
762 this->ike_sa_id->is_initiator(this->ike_sa_id));
763
764 this->task_manager->reset(this->task_manager, 0, 0);
765 }
766
767 METHOD(ike_sa_t, get_keymat, keymat_t*,
768 private_ike_sa_t *this)
769 {
770 return this->keymat;
771 }
772
773 METHOD(ike_sa_t, add_virtual_ip, void,
774 private_ike_sa_t *this, bool local, host_t *ip)
775 {
776 if (local)
777 {
778 char *iface;
779
780 if (hydra->kernel_interface->get_interface(hydra->kernel_interface,
781 this->my_host, &iface))
782 {
783 DBG1(DBG_IKE, "installing new virtual IP %H", ip);
784 if (hydra->kernel_interface->add_ip(hydra->kernel_interface,
785 ip, -1, iface) == SUCCESS)
786 {
787 array_insert_create(&this->my_vips, ARRAY_TAIL, ip->clone(ip));
788 }
789 else
790 {
791 DBG1(DBG_IKE, "installing virtual IP %H failed", ip);
792 }
793 free(iface);
794 }
795 else
796 {
797 DBG1(DBG_IKE, "looking up interface for virtual IP %H failed", ip);
798 }
799 }
800 else
801 {
802 array_insert_create(&this->other_vips, ARRAY_TAIL, ip->clone(ip));
803 }
804 }
805
806
807 METHOD(ike_sa_t, clear_virtual_ips, void,
808 private_ike_sa_t *this, bool local)
809 {
810 array_t *vips;
811 host_t *vip;
812
813 vips = local ? this->my_vips : this->other_vips;
814 if (!local && array_count(vips))
815 {
816 charon->bus->assign_vips(charon->bus, &this->public, FALSE);
817 }
818 while (array_remove(vips, ARRAY_HEAD, &vip))
819 {
820 if (local)
821 {
822 hydra->kernel_interface->del_ip(hydra->kernel_interface,
823 vip, -1, TRUE);
824 }
825 vip->destroy(vip);
826 }
827 }
828
829 METHOD(ike_sa_t, create_virtual_ip_enumerator, enumerator_t*,
830 private_ike_sa_t *this, bool local)
831 {
832 if (local)
833 {
834 return array_create_enumerator(this->my_vips);
835 }
836 return array_create_enumerator(this->other_vips);
837 }
838
839 METHOD(ike_sa_t, add_peer_address, void,
840 private_ike_sa_t *this, host_t *host)
841 {
842 array_insert_create(&this->peer_addresses, ARRAY_TAIL, host);
843 }
844
845 METHOD(ike_sa_t, create_peer_address_enumerator, enumerator_t*,
846 private_ike_sa_t *this)
847 {
848 if (this->peer_addresses)
849 {
850 return array_create_enumerator(this->peer_addresses);
851 }
852 /* in case we don't have MOBIKE */
853 return enumerator_create_single(this->other_host, NULL);
854 }
855
856 METHOD(ike_sa_t, clear_peer_addresses, void,
857 private_ike_sa_t *this)
858 {
859 array_destroy_offset(this->peer_addresses, offsetof(host_t, destroy));
860 this->peer_addresses = NULL;
861 }
862
863 METHOD(ike_sa_t, has_mapping_changed, bool,
864 private_ike_sa_t *this, chunk_t hash)
865 {
866 if (this->nat_detection_dest.ptr == NULL)
867 {
868 this->nat_detection_dest = chunk_clone(hash);
869 return FALSE;
870 }
871 if (chunk_equals(hash, this->nat_detection_dest))
872 {
873 return FALSE;
874 }
875 free(this->nat_detection_dest.ptr);
876 this->nat_detection_dest = chunk_clone(hash);
877 return TRUE;
878 }
879
880 METHOD(ike_sa_t, set_pending_updates, void,
881 private_ike_sa_t *this, u_int32_t updates)
882 {
883 this->pending_updates = updates;
884 }
885
886 METHOD(ike_sa_t, get_pending_updates, u_int32_t,
887 private_ike_sa_t *this)
888 {
889 return this->pending_updates;
890 }
891
892 METHOD(ike_sa_t, float_ports, void,
893 private_ike_sa_t *this)
894 {
895 /* do not switch if we have a custom port from MOBIKE/NAT */
896 if (this->my_host->get_port(this->my_host) ==
897 charon->socket->get_port(charon->socket, FALSE))
898 {
899 this->my_host->set_port(this->my_host,
900 charon->socket->get_port(charon->socket, TRUE));
901 }
902 if (this->other_host->get_port(this->other_host) == IKEV2_UDP_PORT)
903 {
904 this->other_host->set_port(this->other_host, IKEV2_NATT_PORT);
905 }
906 }
907
908 METHOD(ike_sa_t, update_hosts, void,
909 private_ike_sa_t *this, host_t *me, host_t *other, bool force)
910 {
911 bool update = FALSE;
912
913 if (me == NULL)
914 {
915 me = this->my_host;
916 }
917 if (other == NULL)
918 {
919 other = this->other_host;
920 }
921
922 /* apply hosts on first received message */
923 if (this->my_host->is_anyaddr(this->my_host) ||
924 this->other_host->is_anyaddr(this->other_host))
925 {
926 set_my_host(this, me->clone(me));
927 set_other_host(this, other->clone(other));
928 update = TRUE;
929 }
930 else
931 {
932 /* update our address in any case */
933 if (force && !me->equals(me, this->my_host))
934 {
935 set_my_host(this, me->clone(me));
936 update = TRUE;
937 }
938
939 if (!other->equals(other, this->other_host) &&
940 (force || has_condition(this, COND_NAT_THERE)))
941 {
942 /* only update other's address if we are behind a static NAT,
943 * which we assume is the case if we are not initiator */
944 if (force ||
945 (!has_condition(this, COND_NAT_HERE) ||
946 !has_condition(this, COND_ORIGINAL_INITIATOR)))
947 {
948 set_other_host(this, other->clone(other));
949 update = TRUE;
950 }
951 }
952 }
953
954 /* update all associated CHILD_SAs, if required */
955 if (update)
956 {
957 enumerator_t *enumerator;
958 child_sa_t *child_sa;
959 linked_list_t *vips;
960
961 vips = linked_list_create_from_enumerator(
962 array_create_enumerator(this->my_vips));
963
964 enumerator = array_create_enumerator(this->child_sas);
965 while (enumerator->enumerate(enumerator, &child_sa))
966 {
967 charon->child_sa_manager->remove(charon->child_sa_manager, child_sa);
968 charon->child_sa_manager->add(charon->child_sa_manager,
969 child_sa, &this->public);
970
971 if (child_sa->update(child_sa, this->my_host, this->other_host,
972 vips, has_condition(this, COND_NAT_ANY)) == NOT_SUPPORTED)
973 {
974 this->public.rekey_child_sa(&this->public,
975 child_sa->get_protocol(child_sa),
976 child_sa->get_spi(child_sa, TRUE));
977 }
978
979 }
980 enumerator->destroy(enumerator);
981
982 vips->destroy(vips);
983 }
984 }
985
986 /**
987 * Set configured DSCP value on packet
988 */
989 static void set_dscp(private_ike_sa_t *this, packet_t *packet)
990 {
991 ike_cfg_t *ike_cfg;
992
993 /* prefer IKE config on peer_cfg, as its selection is more accurate
994 * then the initial IKE config */
995 if (this->peer_cfg)
996 {
997 ike_cfg = this->peer_cfg->get_ike_cfg(this->peer_cfg);
998 }
999 else
1000 {
1001 ike_cfg = this->ike_cfg;
1002 }
1003 if (ike_cfg)
1004 {
1005 packet->set_dscp(packet, ike_cfg->get_dscp(ike_cfg));
1006 }
1007 }
1008
1009 METHOD(ike_sa_t, generate_message, status_t,
1010 private_ike_sa_t *this, message_t *message, packet_t **packet)
1011 {
1012 status_t status;
1013
1014 if (message->is_encoded(message))
1015 { /* already encoded in task, but set DSCP value */
1016 *packet = message->get_packet(message);
1017 set_dscp(this, *packet);
1018 return SUCCESS;
1019 }
1020 this->stats[STAT_OUTBOUND] = time_monotonic(NULL);
1021 message->set_ike_sa_id(message, this->ike_sa_id);
1022 charon->bus->message(charon->bus, message, FALSE, TRUE);
1023 status = message->generate(message, this->keymat, packet);
1024 if (status == SUCCESS)
1025 {
1026 set_dscp(this, *packet);
1027 charon->bus->message(charon->bus, message, FALSE, FALSE);
1028 }
1029 return status;
1030 }
1031
1032 static bool filter_fragments(private_ike_sa_t *this, packet_t **fragment,
1033 packet_t **packet)
1034 {
1035 *packet = (*fragment)->clone(*fragment);
1036 set_dscp(this, *packet);
1037 return TRUE;
1038 }
1039
1040 METHOD(ike_sa_t, generate_message_fragmented, status_t,
1041 private_ike_sa_t *this, message_t *message, enumerator_t **packets)
1042 {
1043 enumerator_t *fragments;
1044 packet_t *packet;
1045 status_t status;
1046 bool use_frags = FALSE;
1047
1048 if (this->ike_cfg)
1049 {
1050 switch (this->ike_cfg->fragmentation(this->ike_cfg))
1051 {
1052 case FRAGMENTATION_FORCE:
1053 use_frags = TRUE;
1054 break;
1055 case FRAGMENTATION_YES:
1056 use_frags = supports_extension(this, EXT_IKE_FRAGMENTATION);
1057 if (use_frags && this->version == IKEV1 &&
1058 supports_extension(this, EXT_MS_WINDOWS))
1059 {
1060 /* It seems Windows 7 and 8 peers only accept proprietary
1061 * fragmented messages if they expect certificates. */
1062 use_frags = message->get_payload(message,
1063 PLV1_CERTIFICATE) != NULL;
1064 }
1065 break;
1066 default:
1067 break;
1068 }
1069 }
1070 if (!use_frags)
1071 {
1072 status = generate_message(this, message, &packet);
1073 if (status != SUCCESS)
1074 {
1075 return status;
1076 }
1077 *packets = enumerator_create_single(packet, NULL);
1078 return SUCCESS;
1079 }
1080
1081 this->stats[STAT_OUTBOUND] = time_monotonic(NULL);
1082 message->set_ike_sa_id(message, this->ike_sa_id);
1083 charon->bus->message(charon->bus, message, FALSE, TRUE);
1084 status = message->fragment(message, this->keymat, this->fragment_size,
1085 &fragments);
1086 if (status == SUCCESS)
1087 {
1088 charon->bus->message(charon->bus, message, FALSE, FALSE);
1089 *packets = enumerator_create_filter(fragments, (void*)filter_fragments,
1090 this, NULL);
1091 }
1092 return status;
1093 }
1094
1095 METHOD(ike_sa_t, set_kmaddress, void,
1096 private_ike_sa_t *this, host_t *local, host_t *remote)
1097 {
1098 DESTROY_IF(this->local_host);
1099 DESTROY_IF(this->remote_host);
1100 this->local_host = local->clone(local);
1101 this->remote_host = remote->clone(remote);
1102 }
1103
1104 #ifdef ME
1105 METHOD(ike_sa_t, act_as_mediation_server, void,
1106 private_ike_sa_t *this)
1107 {
1108 charon->mediation_manager->update_sa_id(charon->mediation_manager,
1109 this->other_id, this->ike_sa_id);
1110 this->is_mediation_server = TRUE;
1111 }
1112
1113 METHOD(ike_sa_t, get_server_reflexive_host, host_t*,
1114 private_ike_sa_t *this)
1115 {
1116 return this->server_reflexive_host;
1117 }
1118
1119 METHOD(ike_sa_t, set_server_reflexive_host, void,
1120 private_ike_sa_t *this, host_t *host)
1121 {
1122 DESTROY_IF(this->server_reflexive_host);
1123 this->server_reflexive_host = host;
1124 }
1125
1126 METHOD(ike_sa_t, get_connect_id, chunk_t,
1127 private_ike_sa_t *this)
1128 {
1129 return this->connect_id;
1130 }
1131
1132 METHOD(ike_sa_t, respond, status_t,
1133 private_ike_sa_t *this, identification_t *peer_id, chunk_t connect_id)
1134 {
1135 ike_me_t *task = ike_me_create(&this->public, TRUE);
1136 task->respond(task, peer_id, connect_id);
1137 this->task_manager->queue_task(this->task_manager, (task_t*)task);
1138 return this->task_manager->initiate(this->task_manager);
1139 }
1140
1141 METHOD(ike_sa_t, callback, status_t,
1142 private_ike_sa_t *this, identification_t *peer_id)
1143 {
1144 ike_me_t *task = ike_me_create(&this->public, TRUE);
1145 task->callback(task, peer_id);
1146 this->task_manager->queue_task(this->task_manager, (task_t*)task);
1147 return this->task_manager->initiate(this->task_manager);
1148 }
1149
1150 METHOD(ike_sa_t, relay, status_t,
1151 private_ike_sa_t *this, identification_t *requester, chunk_t connect_id,
1152 chunk_t connect_key, linked_list_t *endpoints, bool response)
1153 {
1154 ike_me_t *task = ike_me_create(&this->public, TRUE);
1155 task->relay(task, requester, connect_id, connect_key, endpoints, response);
1156 this->task_manager->queue_task(this->task_manager, (task_t*)task);
1157 return this->task_manager->initiate(this->task_manager);
1158 }
1159
1160 METHOD(ike_sa_t, initiate_mediation, status_t,
1161 private_ike_sa_t *this, peer_cfg_t *mediated_cfg)
1162 {
1163 ike_me_t *task = ike_me_create(&this->public, TRUE);
1164 task->connect(task, mediated_cfg->get_peer_id(mediated_cfg));
1165 this->task_manager->queue_task(this->task_manager, (task_t*)task);
1166 return this->task_manager->initiate(this->task_manager);
1167 }
1168
1169 METHOD(ike_sa_t, initiate_mediated, status_t,
1170 private_ike_sa_t *this, host_t *me, host_t *other, chunk_t connect_id)
1171 {
1172 set_my_host(this, me->clone(me));
1173 set_other_host(this, other->clone(other));
1174 chunk_free(&this->connect_id);
1175 this->connect_id = chunk_clone(connect_id);
1176 return this->task_manager->initiate(this->task_manager);
1177 }
1178 #endif /* ME */
1179
1180 /**
1181 * Resolve DNS host in configuration
1182 */
1183 static void resolve_hosts(private_ike_sa_t *this)
1184 {
1185 host_t *host;
1186 int family = AF_UNSPEC;
1187
1188 switch (charon->socket->supported_families(charon->socket))
1189 {
1190 case SOCKET_FAMILY_IPV4:
1191 family = AF_INET;
1192 break;
1193 case SOCKET_FAMILY_IPV6:
1194 family = AF_INET6;
1195 break;
1196 case SOCKET_FAMILY_BOTH:
1197 case SOCKET_FAMILY_NONE:
1198 break;
1199 }
1200
1201 if (this->remote_host)
1202 {
1203 host = this->remote_host->clone(this->remote_host);
1204 host->set_port(host, IKEV2_UDP_PORT);
1205 }
1206 else
1207 {
1208 host = this->ike_cfg->resolve_other(this->ike_cfg, family);
1209 }
1210 if (host)
1211 {
1212 set_other_host(this, host);
1213 }
1214
1215 if (this->local_host)
1216 {
1217 host = this->local_host->clone(this->local_host);
1218 host->set_port(host, charon->socket->get_port(charon->socket, FALSE));
1219 }
1220 else
1221 {
1222 /* use same address family as for other */
1223 if (!this->other_host->is_anyaddr(this->other_host))
1224 {
1225 family = this->other_host->get_family(this->other_host);
1226 }
1227 host = this->ike_cfg->resolve_me(this->ike_cfg, family);
1228
1229 if (host && host->is_anyaddr(host) &&
1230 !this->other_host->is_anyaddr(this->other_host))
1231 {
1232 host->destroy(host);
1233 host = hydra->kernel_interface->get_source_addr(
1234 hydra->kernel_interface, this->other_host, NULL);
1235 if (host)
1236 {
1237 host->set_port(host, this->ike_cfg->get_my_port(this->ike_cfg));
1238 }
1239 else
1240 { /* fallback to address family specific %any(6), if configured */
1241 host = this->ike_cfg->resolve_me(this->ike_cfg, family);
1242 }
1243 }
1244 }
1245 if (host)
1246 {
1247 set_my_host(this, host);
1248 }
1249 }
1250
1251 METHOD(ike_sa_t, initiate, status_t,
1252 private_ike_sa_t *this, child_cfg_t *child_cfg, u_int32_t reqid,
1253 traffic_selector_t *tsi, traffic_selector_t *tsr)
1254 {
1255 bool defer_initiate = FALSE;
1256
1257 if (this->state == IKE_CREATED)
1258 {
1259 if (this->my_host->is_anyaddr(this->my_host) ||
1260 this->other_host->is_anyaddr(this->other_host))
1261 {
1262 resolve_hosts(this);
1263 }
1264
1265 if (this->other_host->is_anyaddr(this->other_host)
1266 #ifdef ME
1267 && !this->peer_cfg->get_mediated_by(this->peer_cfg)
1268 #endif /* ME */
1269 )
1270 {
1271 char *addr;
1272
1273 addr = this->ike_cfg->get_other_addr(this->ike_cfg);
1274 if (!this->retry_initiate_interval)
1275 {
1276 DBG1(DBG_IKE, "unable to resolve %s, initiate aborted",
1277 addr);
1278 DESTROY_IF(child_cfg);
1279 charon->bus->alert(charon->bus, ALERT_PEER_ADDR_FAILED);
1280 return DESTROY_ME;
1281 }
1282 DBG1(DBG_IKE, "unable to resolve %s, retrying in %ds",
1283 addr, this->retry_initiate_interval);
1284 defer_initiate = TRUE;
1285 }
1286
1287 set_condition(this, COND_ORIGINAL_INITIATOR, TRUE);
1288 this->task_manager->queue_ike(this->task_manager);
1289 }
1290
1291 #ifdef ME
1292 if (this->peer_cfg->is_mediation(this->peer_cfg))
1293 {
1294 if (this->state == IKE_ESTABLISHED)
1295 {
1296 /* mediation connection is already established, retrigger state
1297 * change to notify bus listeners */
1298 DBG1(DBG_IKE, "mediation connection is already up");
1299 set_state(this, IKE_ESTABLISHED);
1300 }
1301 DESTROY_IF(child_cfg);
1302 }
1303 else
1304 #endif /* ME */
1305 if (child_cfg)
1306 {
1307 /* normal IKE_SA with CHILD_SA */
1308 this->task_manager->queue_child(this->task_manager, child_cfg, reqid,
1309 tsi, tsr);
1310 #ifdef ME
1311 if (this->peer_cfg->get_mediated_by(this->peer_cfg))
1312 {
1313 /* mediated connection, initiate mediation process */
1314 job_t *job = (job_t*)initiate_mediation_job_create(this->ike_sa_id);
1315 lib->processor->queue_job(lib->processor, job);
1316 return SUCCESS;
1317 }
1318 #endif /* ME */
1319 }
1320
1321 if (defer_initiate)
1322 {
1323 if (!this->retry_initiate_queued)
1324 {
1325 job_t *job = (job_t*)retry_initiate_job_create(this->ike_sa_id);
1326 lib->scheduler->schedule_job(lib->scheduler, (job_t*)job,
1327 this->retry_initiate_interval);
1328 this->retry_initiate_queued = TRUE;
1329 }
1330 return SUCCESS;
1331 }
1332 this->retry_initiate_queued = FALSE;
1333 return this->task_manager->initiate(this->task_manager);
1334 }
1335
1336 METHOD(ike_sa_t, retry_initiate, status_t,
1337 private_ike_sa_t *this)
1338 {
1339 if (this->retry_initiate_queued)
1340 {
1341 this->retry_initiate_queued = FALSE;
1342 return initiate(this, NULL, 0, NULL, NULL);
1343 }
1344 return SUCCESS;
1345 }
1346
1347 METHOD(ike_sa_t, process_message, status_t,
1348 private_ike_sa_t *this, message_t *message)
1349 {
1350 status_t status;
1351
1352 if (this->state == IKE_PASSIVE)
1353 { /* do not handle messages in passive state */
1354 return FAILED;
1355 }
1356 if (message->get_major_version(message) != this->version)
1357 {
1358 DBG1(DBG_IKE, "ignoring %N IKEv%u exchange on %N SA",
1359 exchange_type_names, message->get_exchange_type(message),
1360 message->get_major_version(message),
1361 ike_version_names, this->version);
1362 /* TODO-IKEv1: fall back to IKEv1 if we receive an IKEv1
1363 * INVALID_MAJOR_VERSION on an IKEv2 SA. */
1364 return FAILED;
1365 }
1366 status = this->task_manager->process_message(this->task_manager, message);
1367 if (this->flush_auth_cfg && this->state == IKE_ESTABLISHED)
1368 {
1369 /* authentication completed */
1370 this->flush_auth_cfg = FALSE;
1371 flush_auth_cfgs(this);
1372 }
1373 return status;
1374 }
1375
1376 METHOD(ike_sa_t, get_id, ike_sa_id_t*,
1377 private_ike_sa_t *this)
1378 {
1379 return this->ike_sa_id;
1380 }
1381
1382 METHOD(ike_sa_t, get_version, ike_version_t,
1383 private_ike_sa_t *this)
1384 {
1385 return this->version;
1386 }
1387
1388 METHOD(ike_sa_t, get_my_id, identification_t*,
1389 private_ike_sa_t *this)
1390 {
1391 return this->my_id;
1392 }
1393
1394 METHOD(ike_sa_t, set_my_id, void,
1395 private_ike_sa_t *this, identification_t *me)
1396 {
1397 DESTROY_IF(this->my_id);
1398 this->my_id = me;
1399 }
1400
1401 METHOD(ike_sa_t, get_other_id, identification_t*,
1402 private_ike_sa_t *this)
1403 {
1404 return this->other_id;
1405 }
1406
1407 METHOD(ike_sa_t, get_other_eap_id, identification_t*,
1408 private_ike_sa_t *this)
1409 {
1410 identification_t *id = NULL, *current;
1411 enumerator_t *enumerator;
1412 auth_cfg_t *cfg;
1413
1414 enumerator = array_create_enumerator(this->other_auths);
1415 while (enumerator->enumerate(enumerator, &cfg))
1416 {
1417 /* prefer EAP-Identity of last round */
1418 current = cfg->get(cfg, AUTH_RULE_EAP_IDENTITY);
1419 if (!current || current->get_type(current) == ID_ANY)
1420 {
1421 current = cfg->get(cfg, AUTH_RULE_XAUTH_IDENTITY);
1422 }
1423 if (!current || current->get_type(current) == ID_ANY)
1424 {
1425 current = cfg->get(cfg, AUTH_RULE_IDENTITY);
1426 }
1427 if (current && current->get_type(current) != ID_ANY)
1428 {
1429 id = current;
1430 continue;
1431 }
1432 }
1433 enumerator->destroy(enumerator);
1434 if (id)
1435 {
1436 return id;
1437 }
1438 return this->other_id;
1439 }
1440
1441 METHOD(ike_sa_t, set_other_id, void,
1442 private_ike_sa_t *this, identification_t *other)
1443 {
1444 DESTROY_IF(this->other_id);
1445 this->other_id = other;
1446 }
1447
1448 METHOD(ike_sa_t, add_child_sa, void,
1449 private_ike_sa_t *this, child_sa_t *child_sa)
1450 {
1451 array_insert_create(&this->child_sas, ARRAY_TAIL, child_sa);
1452 charon->child_sa_manager->add(charon->child_sa_manager,
1453 child_sa, &this->public);
1454 }
1455
1456 METHOD(ike_sa_t, get_child_sa, child_sa_t*,
1457 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi, bool inbound)
1458 {
1459 enumerator_t *enumerator;
1460 child_sa_t *current, *found = NULL;
1461
1462 enumerator = array_create_enumerator(this->child_sas);
1463 while (enumerator->enumerate(enumerator, (void**)&current))
1464 {
1465 if (current->get_spi(current, inbound) == spi &&
1466 current->get_protocol(current) == protocol)
1467 {
1468 found = current;
1469 }
1470 }
1471 enumerator->destroy(enumerator);
1472 return found;
1473 }
1474
1475 METHOD(ike_sa_t, get_child_count, int,
1476 private_ike_sa_t *this)
1477 {
1478 return array_count(this->child_sas);
1479 }
1480
1481 /**
1482 * Private data of a create_child_sa_enumerator()
1483 */
1484 typedef struct {
1485 /** implements enumerator */
1486 enumerator_t public;
1487 /** inner array enumerator */
1488 enumerator_t *inner;
1489 /** current item */
1490 child_sa_t *current;
1491 } child_enumerator_t;
1492
1493 METHOD(enumerator_t, child_enumerate, bool,
1494 child_enumerator_t *this, child_sa_t **child_sa)
1495 {
1496 if (this->inner->enumerate(this->inner, &this->current))
1497 {
1498 *child_sa = this->current;
1499 return TRUE;
1500 }
1501 return FALSE;
1502 }
1503
1504 METHOD(enumerator_t, child_enumerator_destroy, void,
1505 child_enumerator_t *this)
1506 {
1507 this->inner->destroy(this->inner);
1508 free(this);
1509 }
1510
1511 METHOD(ike_sa_t, create_child_sa_enumerator, enumerator_t*,
1512 private_ike_sa_t *this)
1513 {
1514 child_enumerator_t *enumerator;
1515
1516 INIT(enumerator,
1517 .public = {
1518 .enumerate = (void*)_child_enumerate,
1519 .destroy = _child_enumerator_destroy,
1520 },
1521 .inner = array_create_enumerator(this->child_sas),
1522 );
1523 return &enumerator->public;
1524 }
1525
1526 METHOD(ike_sa_t, remove_child_sa, void,
1527 private_ike_sa_t *this, enumerator_t *enumerator)
1528 {
1529 child_enumerator_t *ce = (child_enumerator_t*)enumerator;
1530
1531 charon->child_sa_manager->remove(charon->child_sa_manager, ce->current);
1532 array_remove_at(this->child_sas, ce->inner);
1533 }
1534
1535 METHOD(ike_sa_t, rekey_child_sa, status_t,
1536 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi)
1537 {
1538 if (this->state == IKE_PASSIVE)
1539 {
1540 return INVALID_STATE;
1541 }
1542 this->task_manager->queue_child_rekey(this->task_manager, protocol, spi);
1543 return this->task_manager->initiate(this->task_manager);
1544 }
1545
1546 METHOD(ike_sa_t, delete_child_sa, status_t,
1547 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi, bool expired)
1548 {
1549 if (this->state == IKE_PASSIVE)
1550 {
1551 return INVALID_STATE;
1552 }
1553 this->task_manager->queue_child_delete(this->task_manager,
1554 protocol, spi, expired);
1555 return this->task_manager->initiate(this->task_manager);
1556 }
1557
1558 METHOD(ike_sa_t, destroy_child_sa, status_t,
1559 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi)
1560 {
1561 enumerator_t *enumerator;
1562 child_sa_t *child_sa;
1563 status_t status = NOT_FOUND;
1564
1565 enumerator = create_child_sa_enumerator(this);
1566 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1567 {
1568 if (child_sa->get_protocol(child_sa) == protocol &&
1569 child_sa->get_spi(child_sa, TRUE) == spi)
1570 {
1571 remove_child_sa(this, enumerator);
1572 child_sa->destroy(child_sa);
1573 status = SUCCESS;
1574 break;
1575 }
1576 }
1577 enumerator->destroy(enumerator);
1578 return status;
1579 }
1580
1581 METHOD(ike_sa_t, delete_, status_t,
1582 private_ike_sa_t *this)
1583 {
1584 switch (this->state)
1585 {
1586 case IKE_REKEYING:
1587 if (this->version == IKEV1)
1588 { /* SA has been reauthenticated, delete */
1589 charon->bus->ike_updown(charon->bus, &this->public, FALSE);
1590 break;
1591 }
1592 /* FALL */
1593 case IKE_ESTABLISHED:
1594 if (time_monotonic(NULL) >= this->stats[STAT_DELETE])
1595 { /* IKE_SA hard lifetime hit */
1596 charon->bus->alert(charon->bus, ALERT_IKE_SA_EXPIRED);
1597 }
1598 this->task_manager->queue_ike_delete(this->task_manager);
1599 return this->task_manager->initiate(this->task_manager);
1600 case IKE_CREATED:
1601 DBG1(DBG_IKE, "deleting unestablished IKE_SA");
1602 break;
1603 case IKE_PASSIVE:
1604 break;
1605 default:
1606 DBG1(DBG_IKE, "destroying IKE_SA in state %N "
1607 "without notification", ike_sa_state_names, this->state);
1608 charon->bus->ike_updown(charon->bus, &this->public, FALSE);
1609 break;
1610 }
1611 return DESTROY_ME;
1612 }
1613
1614 METHOD(ike_sa_t, rekey, status_t,
1615 private_ike_sa_t *this)
1616 {
1617 if (this->state == IKE_PASSIVE)
1618 {
1619 return INVALID_STATE;
1620 }
1621 this->task_manager->queue_ike_rekey(this->task_manager);
1622 return this->task_manager->initiate(this->task_manager);
1623 }
1624
1625 METHOD(ike_sa_t, reauth, status_t,
1626 private_ike_sa_t *this)
1627 {
1628 if (this->state == IKE_PASSIVE)
1629 {
1630 return INVALID_STATE;
1631 }
1632 if (this->state == IKE_CONNECTING)
1633 {
1634 DBG0(DBG_IKE, "reinitiating IKE_SA %s[%d]",
1635 get_name(this), this->unique_id);
1636 reset(this);
1637 this->task_manager->queue_ike(this->task_manager);
1638 return this->task_manager->initiate(this->task_manager);
1639 }
1640 /* we can't reauthenticate as responder when we use EAP or virtual IPs.
1641 * If the peer does not support RFC4478, there is no way to keep the
1642 * IKE_SA up. */
1643 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
1644 {
1645 DBG1(DBG_IKE, "initiator did not reauthenticate as requested");
1646 if (array_count(this->other_vips) != 0 ||
1647 has_condition(this, COND_XAUTH_AUTHENTICATED) ||
1648 has_condition(this, COND_EAP_AUTHENTICATED)
1649 #ifdef ME
1650 /* as mediation server we too cannot reauth the IKE_SA */
1651 || this->is_mediation_server
1652 #endif /* ME */
1653 )
1654 {
1655 time_t del, now;
1656
1657 del = this->stats[STAT_DELETE];
1658 now = time_monotonic(NULL);
1659 DBG1(DBG_IKE, "IKE_SA %s[%d] will timeout in %V",
1660 get_name(this), this->unique_id, &now, &del);
1661 return FAILED;
1662 }
1663 else
1664 {
1665 DBG0(DBG_IKE, "reauthenticating IKE_SA %s[%d] actively",
1666 get_name(this), this->unique_id);
1667 }
1668 }
1669 else
1670 {
1671 DBG0(DBG_IKE, "reauthenticating IKE_SA %s[%d]",
1672 get_name(this), this->unique_id);
1673 }
1674 set_condition(this, COND_REAUTHENTICATING, TRUE);
1675 this->task_manager->queue_ike_reauth(this->task_manager);
1676 return this->task_manager->initiate(this->task_manager);
1677 }
1678
1679 /**
1680 * Check if tasks to create CHILD_SAs are queued in the given queue
1681 */
1682 static bool is_child_queued(private_ike_sa_t *this, task_queue_t queue)
1683 {
1684 enumerator_t *enumerator;
1685 task_t *task;
1686 bool found = FALSE;
1687
1688 enumerator = this->task_manager->create_task_enumerator(this->task_manager,
1689 queue);
1690 while (enumerator->enumerate(enumerator, &task))
1691 {
1692 if (task->get_type(task) == TASK_CHILD_CREATE ||
1693 task->get_type(task) == TASK_QUICK_MODE)
1694 {
1695 found = TRUE;
1696 break;
1697 }
1698 }
1699 enumerator->destroy(enumerator);
1700 return found;
1701 }
1702
1703 METHOD(ike_sa_t, reestablish, status_t,
1704 private_ike_sa_t *this)
1705 {
1706 ike_sa_t *new;
1707 host_t *host;
1708 action_t action;
1709 enumerator_t *enumerator;
1710 child_sa_t *child_sa;
1711 child_cfg_t *child_cfg;
1712 bool restart = FALSE;
1713 status_t status = FAILED;
1714
1715 if (has_condition(this, COND_REAUTHENTICATING))
1716 { /* only reauthenticate if we have children */
1717 if (array_count(this->child_sas) == 0
1718 #ifdef ME
1719 /* allow reauth of mediation connections without CHILD_SAs */
1720 && !this->peer_cfg->is_mediation(this->peer_cfg)
1721 #endif /* ME */
1722 )
1723 {
1724 DBG1(DBG_IKE, "unable to reauthenticate IKE_SA, no CHILD_SA "
1725 "to recreate");
1726 }
1727 else
1728 {
1729 restart = TRUE;
1730 }
1731 }
1732 else
1733 { /* check if we have children to keep up at all */
1734 enumerator = array_create_enumerator(this->child_sas);
1735 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1736 {
1737 if (this->state == IKE_DELETING)
1738 {
1739 action = child_sa->get_close_action(child_sa);
1740 }
1741 else
1742 {
1743 action = child_sa->get_dpd_action(child_sa);
1744 }
1745 switch (action)
1746 {
1747 case ACTION_RESTART:
1748 restart = TRUE;
1749 break;
1750 case ACTION_ROUTE:
1751 charon->traps->install(charon->traps, this->peer_cfg,
1752 child_sa->get_config(child_sa),
1753 child_sa->get_reqid(child_sa));
1754 break;
1755 default:
1756 break;
1757 }
1758 }
1759 enumerator->destroy(enumerator);
1760 /* check if we have tasks that recreate children */
1761 if (!restart)
1762 {
1763 restart = is_child_queued(this, TASK_QUEUE_ACTIVE) ||
1764 is_child_queued(this, TASK_QUEUE_QUEUED);
1765 }
1766 #ifdef ME
1767 /* mediation connections have no children, keep them up anyway */
1768 if (this->peer_cfg->is_mediation(this->peer_cfg))
1769 {
1770 restart = TRUE;
1771 }
1772 #endif /* ME */
1773 }
1774 if (!restart)
1775 {
1776 return FAILED;
1777 }
1778
1779 /* check if we are able to reestablish this IKE_SA */
1780 if (!has_condition(this, COND_ORIGINAL_INITIATOR) &&
1781 (array_count(this->other_vips) != 0 ||
1782 has_condition(this, COND_EAP_AUTHENTICATED)
1783 #ifdef ME
1784 || this->is_mediation_server
1785 #endif /* ME */
1786 ))
1787 {
1788 DBG1(DBG_IKE, "unable to reestablish IKE_SA due to asymmetric setup");
1789 return FAILED;
1790 }
1791
1792 new = charon->ike_sa_manager->checkout_new(charon->ike_sa_manager,
1793 this->version, TRUE);
1794 if (!new)
1795 {
1796 return FAILED;
1797 }
1798 new->set_peer_cfg(new, this->peer_cfg);
1799 host = this->other_host;
1800 new->set_other_host(new, host->clone(host));
1801 host = this->my_host;
1802 new->set_my_host(new, host->clone(host));
1803 charon->bus->ike_reestablish_pre(charon->bus, &this->public, new);
1804 /* resolve hosts but use the old addresses above as fallback */
1805 resolve_hosts((private_ike_sa_t*)new);
1806 /* if we already have a virtual IP, we reuse it */
1807 enumerator = array_create_enumerator(this->my_vips);
1808 while (enumerator->enumerate(enumerator, &host))
1809 {
1810 new->add_virtual_ip(new, TRUE, host);
1811 }
1812 enumerator->destroy(enumerator);
1813
1814 #ifdef ME
1815 if (this->peer_cfg->is_mediation(this->peer_cfg))
1816 {
1817 status = new->initiate(new, NULL, 0, NULL, NULL);
1818 }
1819 else
1820 #endif /* ME */
1821 {
1822 /* handle existing CHILD_SAs */
1823 enumerator = create_child_sa_enumerator(this);
1824 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1825 {
1826 if (has_condition(this, COND_REAUTHENTICATING))
1827 {
1828 switch (child_sa->get_state(child_sa))
1829 {
1830 case CHILD_ROUTED:
1831 { /* move routed child directly */
1832 remove_child_sa(this, enumerator);
1833 new->add_child_sa(new, child_sa);
1834 action = ACTION_NONE;
1835 break;
1836 }
1837 default:
1838 { /* initiate/queue all other CHILD_SAs */
1839 action = ACTION_RESTART;
1840 break;
1841 }
1842 }
1843 }
1844 else
1845 { /* only restart CHILD_SAs that are configured accordingly */
1846 if (this->state == IKE_DELETING)
1847 {
1848 action = child_sa->get_close_action(child_sa);
1849 }
1850 else
1851 {
1852 action = child_sa->get_dpd_action(child_sa);
1853 }
1854 }
1855 switch (action)
1856 {
1857 case ACTION_RESTART:
1858 child_cfg = child_sa->get_config(child_sa);
1859 DBG1(DBG_IKE, "restarting CHILD_SA %s",
1860 child_cfg->get_name(child_cfg));
1861 child_cfg->get_ref(child_cfg);
1862 status = new->initiate(new, child_cfg,
1863 child_sa->get_reqid(child_sa), NULL, NULL);
1864 break;
1865 default:
1866 continue;
1867 }
1868 if (status == DESTROY_ME)
1869 {
1870 break;
1871 }
1872 }
1873 enumerator->destroy(enumerator);
1874 /* adopt any active or queued CHILD-creating tasks */
1875 if (status != DESTROY_ME)
1876 {
1877 task_manager_t *other_tasks = ((private_ike_sa_t*)new)->task_manager;
1878 other_tasks->adopt_child_tasks(other_tasks, this->task_manager);
1879 if (new->get_state(new) == IKE_CREATED)
1880 {
1881 status = new->initiate(new, NULL, 0, NULL, NULL);
1882 }
1883 }
1884 }
1885
1886 if (status == DESTROY_ME)
1887 {
1888 charon->bus->ike_reestablish_post(charon->bus, &this->public, new,
1889 FALSE);
1890 charon->ike_sa_manager->checkin_and_destroy(charon->ike_sa_manager, new);
1891 status = FAILED;
1892 }
1893 else
1894 {
1895 charon->bus->ike_reestablish_post(charon->bus, &this->public, new,
1896 TRUE);
1897 charon->ike_sa_manager->checkin(charon->ike_sa_manager, new);
1898 status = SUCCESS;
1899 }
1900 charon->bus->set_sa(charon->bus, &this->public);
1901 return status;
1902 }
1903
1904 METHOD(ike_sa_t, retransmit, status_t,
1905 private_ike_sa_t *this, u_int32_t message_id)
1906 {
1907 if (this->state == IKE_PASSIVE)
1908 {
1909 return INVALID_STATE;
1910 }
1911 this->stats[STAT_OUTBOUND] = time_monotonic(NULL);
1912 if (this->task_manager->retransmit(this->task_manager, message_id) != SUCCESS)
1913 {
1914 /* send a proper signal to brief interested bus listeners */
1915 switch (this->state)
1916 {
1917 case IKE_CONNECTING:
1918 {
1919 /* retry IKE_SA_INIT/Main Mode if we have multiple keyingtries */
1920 u_int32_t tries = this->peer_cfg->get_keyingtries(this->peer_cfg);
1921 charon->bus->alert(charon->bus, ALERT_PEER_INIT_UNREACHABLE,
1922 this->keyingtry);
1923 this->keyingtry++;
1924 if (tries == 0 || tries > this->keyingtry)
1925 {
1926 DBG1(DBG_IKE, "peer not responding, trying again (%d/%d)",
1927 this->keyingtry + 1, tries);
1928 reset(this);
1929 resolve_hosts(this);
1930 this->task_manager->queue_ike(this->task_manager);
1931 return this->task_manager->initiate(this->task_manager);
1932 }
1933 DBG1(DBG_IKE, "establishing IKE_SA failed, peer not responding");
1934 break;
1935 }
1936 case IKE_DELETING:
1937 DBG1(DBG_IKE, "proper IKE_SA delete failed, peer not responding");
1938 if (has_condition(this, COND_REAUTHENTICATING))
1939 {
1940 DBG1(DBG_IKE, "delete during reauthentication failed, "
1941 "trying to reestablish IKE_SA anyway");
1942 reestablish(this);
1943 }
1944 break;
1945 case IKE_REKEYING:
1946 DBG1(DBG_IKE, "rekeying IKE_SA failed, peer not responding");
1947 /* FALL */
1948 default:
1949 reestablish(this);
1950 break;
1951 }
1952 if (this->state != IKE_CONNECTING)
1953 {
1954 charon->bus->ike_updown(charon->bus, &this->public, FALSE);
1955 }
1956 return DESTROY_ME;
1957 }
1958 return SUCCESS;
1959 }
1960
1961 METHOD(ike_sa_t, set_auth_lifetime, status_t,
1962 private_ike_sa_t *this, u_int32_t lifetime)
1963 {
1964 u_int32_t diff, hard, soft, now;
1965 bool send_update;
1966
1967 diff = this->peer_cfg->get_over_time(this->peer_cfg);
1968 now = time_monotonic(NULL);
1969 hard = now + lifetime;
1970 soft = hard - diff;
1971
1972 /* check if we have to send an AUTH_LIFETIME to enforce the new lifetime.
1973 * We send the notify in IKE_AUTH if not yet ESTABLISHED. */
1974 send_update = this->state == IKE_ESTABLISHED && this->version == IKEV2 &&
1975 !has_condition(this, COND_ORIGINAL_INITIATOR) &&
1976 (array_count(this->other_vips) != 0 ||
1977 has_condition(this, COND_EAP_AUTHENTICATED));
1978
1979 if (lifetime < diff)
1980 {
1981 this->stats[STAT_REAUTH] = now;
1982
1983 if (!send_update)
1984 {
1985 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, "
1986 "starting reauthentication", lifetime);
1987 lib->processor->queue_job(lib->processor,
1988 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE));
1989 }
1990 }
1991 else if (this->stats[STAT_REAUTH] == 0 ||
1992 this->stats[STAT_REAUTH] > soft)
1993 {
1994 this->stats[STAT_REAUTH] = soft;
1995 if (!send_update)
1996 {
1997 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, scheduling "
1998 "reauthentication in %ds", lifetime, lifetime - diff);
1999 lib->scheduler->schedule_job(lib->scheduler,
2000 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE),
2001 lifetime - diff);
2002 }
2003 }
2004 else
2005 {
2006 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, "
2007 "reauthentication already scheduled in %ds", lifetime,
2008 this->stats[STAT_REAUTH] - time_monotonic(NULL));
2009 send_update = FALSE;
2010 }
2011 /* give at least some seconds to reauthenticate */
2012 this->stats[STAT_DELETE] = max(hard, now + 10);
2013
2014 #ifdef USE_IKEV2
2015 if (send_update)
2016 {
2017 ike_auth_lifetime_t *task;
2018
2019 task = ike_auth_lifetime_create(&this->public, TRUE);
2020 this->task_manager->queue_task(this->task_manager, &task->task);
2021 return this->task_manager->initiate(this->task_manager);
2022 }
2023 #endif
2024 return SUCCESS;
2025 }
2026
2027 /**
2028 * Check if the current combination of source and destination address is still
2029 * valid.
2030 */
2031 static bool is_current_path_valid(private_ike_sa_t *this)
2032 {
2033 bool valid = FALSE;
2034 host_t *src;
2035 src = hydra->kernel_interface->get_source_addr(hydra->kernel_interface,
2036 this->other_host, this->my_host);
2037 if (src)
2038 {
2039 if (src->ip_equals(src, this->my_host))
2040 {
2041 valid = TRUE;
2042 }
2043 src->destroy(src);
2044 }
2045 return valid;
2046 }
2047
2048 /**
2049 * Check if we have any path avialable for this IKE SA.
2050 */
2051 static bool is_any_path_valid(private_ike_sa_t *this)
2052 {
2053 bool valid = FALSE;
2054 enumerator_t *enumerator;
2055 host_t *src = NULL, *addr;
2056 int family = AF_UNSPEC;
2057
2058 switch (charon->socket->supported_families(charon->socket))
2059 {
2060 case SOCKET_FAMILY_IPV4:
2061 family = AF_INET;
2062 break;
2063 case SOCKET_FAMILY_IPV6:
2064 family = AF_INET6;
2065 break;
2066 case SOCKET_FAMILY_BOTH:
2067 case SOCKET_FAMILY_NONE:
2068 break;
2069 }
2070
2071 DBG1(DBG_IKE, "old path is not available anymore, try to find another");
2072 enumerator = create_peer_address_enumerator(this);
2073 while (enumerator->enumerate(enumerator, &addr))
2074 {
2075 if (family != AF_UNSPEC && addr->get_family(addr) != family)
2076 {
2077 continue;
2078 }
2079 DBG1(DBG_IKE, "looking for a route to %H ...", addr);
2080 src = hydra->kernel_interface->get_source_addr(
2081 hydra->kernel_interface, addr, NULL);
2082 if (src)
2083 {
2084 break;
2085 }
2086 }
2087 enumerator->destroy(enumerator);
2088 if (src)
2089 {
2090 valid = TRUE;
2091 src->destroy(src);
2092 }
2093 return valid;
2094 }
2095
2096 METHOD(ike_sa_t, roam, status_t,
2097 private_ike_sa_t *this, bool address)
2098 {
2099 switch (this->state)
2100 {
2101 case IKE_CREATED:
2102 case IKE_DELETING:
2103 case IKE_DESTROYING:
2104 case IKE_PASSIVE:
2105 return SUCCESS;
2106 default:
2107 break;
2108 }
2109
2110 /* keep existing path if possible */
2111 if (is_current_path_valid(this))
2112 {
2113 DBG2(DBG_IKE, "keeping connection path %H - %H",
2114 this->my_host, this->other_host);
2115 set_condition(this, COND_STALE, FALSE);
2116
2117 if (supports_extension(this, EXT_MOBIKE) && address)
2118 { /* if any addresses changed, send an updated list */
2119 DBG1(DBG_IKE, "sending address list update using MOBIKE");
2120 this->task_manager->queue_mobike(this->task_manager, FALSE, TRUE);
2121 return this->task_manager->initiate(this->task_manager);
2122 }
2123 return SUCCESS;
2124 }
2125
2126 if (!is_any_path_valid(this))
2127 {
2128 DBG1(DBG_IKE, "no route found to reach %H, MOBIKE update deferred",
2129 this->other_host);
2130 set_condition(this, COND_STALE, TRUE);
2131 return SUCCESS;
2132 }
2133 set_condition(this, COND_STALE, FALSE);
2134
2135 /* update addresses with mobike, if supported ... */
2136 if (supports_extension(this, EXT_MOBIKE))
2137 {
2138 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
2139 { /* responder updates the peer about changed address config */
2140 DBG1(DBG_IKE, "sending address list update using MOBIKE, "
2141 "implicitly requesting an address change");
2142 address = TRUE;
2143 }
2144 else
2145 {
2146 DBG1(DBG_IKE, "requesting address change using MOBIKE");
2147 }
2148 this->task_manager->queue_mobike(this->task_manager, TRUE, address);
2149 return this->task_manager->initiate(this->task_manager);
2150 }
2151
2152 /* ... reauth if not */
2153 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
2154 { /* responder does not reauthenticate */
2155 set_condition(this, COND_STALE, TRUE);
2156 return SUCCESS;
2157 }
2158 DBG1(DBG_IKE, "reauthenticating IKE_SA due to address change");
2159 /* since our previous path is not valid anymore, try and find a new one */
2160 resolve_hosts(this);
2161 return reauth(this);
2162 }
2163
2164 METHOD(ike_sa_t, add_configuration_attribute, void,
2165 private_ike_sa_t *this, attribute_handler_t *handler,
2166 configuration_attribute_type_t type, chunk_t data)
2167 {
2168 attribute_entry_t entry = {
2169 .handler = handler,
2170 .type = type,
2171 .data = chunk_clone(data),
2172 };
2173 array_insert(this->attributes, ARRAY_TAIL, &entry);
2174 }
2175
2176 /**
2177 * Enumerator filter for attributes
2178 */
2179 static bool filter_attribute(void *null, attribute_entry_t **in,
2180 configuration_attribute_type_t *type, void *in2,
2181 chunk_t *data, void *in3, bool *handled)
2182 {
2183 *type = (*in)->type;
2184 *data = (*in)->data;
2185 *handled = (*in)->handler != NULL;
2186 return TRUE;
2187 }
2188
2189 METHOD(ike_sa_t, create_attribute_enumerator, enumerator_t*,
2190 private_ike_sa_t *this)
2191 {
2192 return enumerator_create_filter(array_create_enumerator(this->attributes),
2193 (void*)filter_attribute, NULL, NULL);
2194 }
2195
2196 METHOD(ike_sa_t, create_task_enumerator, enumerator_t*,
2197 private_ike_sa_t *this, task_queue_t queue)
2198 {
2199 return this->task_manager->create_task_enumerator(this->task_manager, queue);
2200 }
2201
2202 METHOD(ike_sa_t, flush_queue, void,
2203 private_ike_sa_t *this, task_queue_t queue)
2204 {
2205 this->task_manager->flush_queue(this->task_manager, queue);
2206 }
2207
2208 METHOD(ike_sa_t, queue_task, void,
2209 private_ike_sa_t *this, task_t *task)
2210 {
2211 this->task_manager->queue_task(this->task_manager, task);
2212 }
2213
2214 METHOD(ike_sa_t, inherit_pre, void,
2215 private_ike_sa_t *this, ike_sa_t *other_public)
2216 {
2217 private_ike_sa_t *other = (private_ike_sa_t*)other_public;
2218
2219 /* apply config and hosts */
2220 set_peer_cfg(this, other->peer_cfg);
2221 set_my_host(this, other->my_host->clone(other->my_host));
2222 set_other_host(this, other->other_host->clone(other->other_host));
2223
2224 /* apply extensions and conditions with a few exceptions */
2225 this->extensions = other->extensions;
2226 this->conditions = other->conditions;
2227 this->conditions &= ~COND_STALE;
2228 this->conditions &= ~COND_REAUTHENTICATING;
2229 }
2230
2231 METHOD(ike_sa_t, inherit_post, void,
2232 private_ike_sa_t *this, ike_sa_t *other_public)
2233 {
2234 private_ike_sa_t *other = (private_ike_sa_t*)other_public;
2235 child_sa_t *child_sa;
2236 enumerator_t *enumerator;
2237 attribute_entry_t entry;
2238 auth_cfg_t *cfg;
2239 host_t *vip;
2240
2241 /* apply hosts and ids */
2242 this->my_host->destroy(this->my_host);
2243 this->other_host->destroy(this->other_host);
2244 this->my_id->destroy(this->my_id);
2245 this->other_id->destroy(this->other_id);
2246 this->my_host = other->my_host->clone(other->my_host);
2247 this->other_host = other->other_host->clone(other->other_host);
2248 this->my_id = other->my_id->clone(other->my_id);
2249 this->other_id = other->other_id->clone(other->other_id);
2250
2251 /* apply assigned virtual IPs... */
2252 while (array_remove(other->my_vips, ARRAY_HEAD, &vip))
2253 {
2254 array_insert_create(&this->my_vips, ARRAY_TAIL, vip);
2255 }
2256 while (array_remove(other->other_vips, ARRAY_HEAD, &vip))
2257 {
2258 array_insert_create(&this->other_vips, ARRAY_TAIL, vip);
2259 }
2260
2261 /* authentication information */
2262 enumerator = array_create_enumerator(other->my_auths);
2263 while (enumerator->enumerate(enumerator, &cfg))
2264 {
2265 array_insert(this->my_auths, ARRAY_TAIL, cfg->clone(cfg));
2266 }
2267 enumerator->destroy(enumerator);
2268 enumerator = array_create_enumerator(other->other_auths);
2269 while (enumerator->enumerate(enumerator, &cfg))
2270 {
2271 array_insert(this->other_auths, ARRAY_TAIL, cfg->clone(cfg));
2272 }
2273 enumerator->destroy(enumerator);
2274
2275 /* ... and configuration attributes */
2276 while (array_remove(other->attributes, ARRAY_HEAD, &entry))
2277 {
2278 array_insert(this->attributes, ARRAY_TAIL, &entry);
2279 }
2280
2281 /* inherit all conditions */
2282 this->conditions = other->conditions;
2283 if (this->conditions & COND_NAT_HERE)
2284 {
2285 send_keepalive(this);
2286 }
2287
2288 #ifdef ME
2289 if (other->is_mediation_server)
2290 {
2291 act_as_mediation_server(this);
2292 }
2293 else if (other->server_reflexive_host)
2294 {
2295 this->server_reflexive_host = other->server_reflexive_host->clone(
2296 other->server_reflexive_host);
2297 }
2298 #endif /* ME */
2299
2300 /* adopt all children */
2301 while (array_remove(other->child_sas, ARRAY_HEAD, &child_sa))
2302 {
2303 charon->child_sa_manager->remove(charon->child_sa_manager, child_sa);
2304 add_child_sa(this, child_sa);
2305 }
2306
2307 /* move pending tasks to the new IKE_SA */
2308 this->task_manager->adopt_tasks(this->task_manager, other->task_manager);
2309
2310 /* reauthentication timeout survives a rekeying */
2311 if (other->stats[STAT_REAUTH])
2312 {
2313 time_t reauth, delete, now = time_monotonic(NULL);
2314
2315 this->stats[STAT_REAUTH] = other->stats[STAT_REAUTH];
2316 reauth = this->stats[STAT_REAUTH] - now;
2317 delete = reauth + this->peer_cfg->get_over_time(this->peer_cfg);
2318 this->stats[STAT_DELETE] = this->stats[STAT_REAUTH] + delete;
2319 DBG1(DBG_IKE, "rescheduling reauthentication in %ds after rekeying, "
2320 "lifetime reduced to %ds", reauth, delete);
2321 lib->scheduler->schedule_job(lib->scheduler,
2322 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE), reauth);
2323 lib->scheduler->schedule_job(lib->scheduler,
2324 (job_t*)delete_ike_sa_job_create(this->ike_sa_id, TRUE), delete);
2325 }
2326 }
2327
2328 METHOD(ike_sa_t, destroy, void,
2329 private_ike_sa_t *this)
2330 {
2331 attribute_entry_t entry;
2332 child_sa_t *child_sa;
2333 host_t *vip;
2334
2335 charon->bus->set_sa(charon->bus, &this->public);
2336
2337 set_state(this, IKE_DESTROYING);
2338 if (this->task_manager)
2339 {
2340 this->task_manager->flush(this->task_manager);
2341 }
2342
2343 /* remove attributes first, as we pass the IKE_SA to the handler */
2344 charon->bus->handle_vips(charon->bus, &this->public, FALSE);
2345 while (array_remove(this->attributes, ARRAY_TAIL, &entry))
2346 {
2347 if (entry.handler)
2348 {
2349 charon->attributes->release(charon->attributes, entry.handler,
2350 this->other_id, entry.type, entry.data);
2351 }
2352 free(entry.data.ptr);
2353 }
2354 /* uninstall CHILD_SAs before virtual IPs, otherwise we might kill
2355 * routes that the CHILD_SA tries to uninstall. */
2356 while (array_remove(this->child_sas, ARRAY_TAIL, &child_sa))
2357 {
2358 charon->child_sa_manager->remove(charon->child_sa_manager, child_sa);
2359 child_sa->destroy(child_sa);
2360 }
2361 while (array_remove(this->my_vips, ARRAY_TAIL, &vip))
2362 {
2363 hydra->kernel_interface->del_ip(hydra->kernel_interface, vip, -1, TRUE);
2364 vip->destroy(vip);
2365 }
2366 if (array_count(this->other_vips))
2367 {
2368 charon->bus->assign_vips(charon->bus, &this->public, FALSE);
2369 }
2370 while (array_remove(this->other_vips, ARRAY_TAIL, &vip))
2371 {
2372 if (this->peer_cfg)
2373 {
2374 linked_list_t *pools;
2375
2376 pools = linked_list_create_from_enumerator(
2377 this->peer_cfg->create_pool_enumerator(this->peer_cfg));
2378 charon->attributes->release_address(charon->attributes,
2379 pools, vip, &this->public);
2380 pools->destroy(pools);
2381 }
2382 vip->destroy(vip);
2383 }
2384
2385 /* unset SA after here to avoid usage by the listeners */
2386 charon->bus->set_sa(charon->bus, NULL);
2387
2388 array_destroy(this->child_sas);
2389 DESTROY_IF(this->task_manager);
2390 DESTROY_IF(this->keymat);
2391 array_destroy(this->attributes);
2392 array_destroy(this->my_vips);
2393 array_destroy(this->other_vips);
2394 array_destroy_offset(this->peer_addresses, offsetof(host_t, destroy));
2395 #ifdef ME
2396 if (this->is_mediation_server)
2397 {
2398 charon->mediation_manager->remove(charon->mediation_manager,
2399 this->ike_sa_id);
2400 }
2401 DESTROY_IF(this->server_reflexive_host);
2402 chunk_free(&this->connect_id);
2403 #endif /* ME */
2404 free(this->nat_detection_dest.ptr);
2405
2406 DESTROY_IF(this->my_host);
2407 DESTROY_IF(this->other_host);
2408 DESTROY_IF(this->my_id);
2409 DESTROY_IF(this->other_id);
2410 DESTROY_IF(this->local_host);
2411 DESTROY_IF(this->remote_host);
2412
2413 DESTROY_IF(this->ike_cfg);
2414 DESTROY_IF(this->peer_cfg);
2415 DESTROY_IF(this->proposal);
2416 this->my_auth->destroy(this->my_auth);
2417 this->other_auth->destroy(this->other_auth);
2418 array_destroy_offset(this->my_auths, offsetof(auth_cfg_t, destroy));
2419 array_destroy_offset(this->other_auths, offsetof(auth_cfg_t, destroy));
2420
2421 this->ike_sa_id->destroy(this->ike_sa_id);
2422 free(this);
2423 }
2424
2425 /*
2426 * Described in header.
2427 */
2428 ike_sa_t * ike_sa_create(ike_sa_id_t *ike_sa_id, bool initiator,
2429 ike_version_t version)
2430 {
2431 private_ike_sa_t *this;
2432 static refcount_t unique_id = 0;
2433
2434 if (version == IKE_ANY)
2435 { /* prefer IKEv2 if protocol not specified */
2436 #ifdef USE_IKEV2
2437 version = IKEV2;
2438 #else
2439 version = IKEV1;
2440 #endif
2441 }
2442
2443 INIT(this,
2444 .public = {
2445 .get_version = _get_version,
2446 .get_state = _get_state,
2447 .set_state = _set_state,
2448 .get_name = _get_name,
2449 .get_statistic = _get_statistic,
2450 .set_statistic = _set_statistic,
2451 .process_message = _process_message,
2452 .initiate = _initiate,
2453 .retry_initiate = _retry_initiate,
2454 .get_ike_cfg = _get_ike_cfg,
2455 .set_ike_cfg = _set_ike_cfg,
2456 .get_peer_cfg = _get_peer_cfg,
2457 .set_peer_cfg = _set_peer_cfg,
2458 .get_auth_cfg = _get_auth_cfg,
2459 .create_auth_cfg_enumerator = _create_auth_cfg_enumerator,
2460 .add_auth_cfg = _add_auth_cfg,
2461 .get_proposal = _get_proposal,
2462 .set_proposal = _set_proposal,
2463 .get_id = _get_id,
2464 .get_my_host = _get_my_host,
2465 .set_my_host = _set_my_host,
2466 .get_other_host = _get_other_host,
2467 .set_other_host = _set_other_host,
2468 .set_message_id = _set_message_id,
2469 .float_ports = _float_ports,
2470 .update_hosts = _update_hosts,
2471 .get_my_id = _get_my_id,
2472 .set_my_id = _set_my_id,
2473 .get_other_id = _get_other_id,
2474 .set_other_id = _set_other_id,
2475 .get_other_eap_id = _get_other_eap_id,
2476 .enable_extension = _enable_extension,
2477 .supports_extension = _supports_extension,
2478 .set_condition = _set_condition,
2479 .has_condition = _has_condition,
2480 .set_pending_updates = _set_pending_updates,
2481 .get_pending_updates = _get_pending_updates,
2482 .create_peer_address_enumerator = _create_peer_address_enumerator,
2483 .add_peer_address = _add_peer_address,
2484 .clear_peer_addresses = _clear_peer_addresses,
2485 .has_mapping_changed = _has_mapping_changed,
2486 .retransmit = _retransmit,
2487 .delete = _delete_,
2488 .destroy = _destroy,
2489 .send_dpd = _send_dpd,
2490 .send_keepalive = _send_keepalive,
2491 .get_keymat = _get_keymat,
2492 .add_child_sa = _add_child_sa,
2493 .get_child_sa = _get_child_sa,
2494 .get_child_count = _get_child_count,
2495 .create_child_sa_enumerator = _create_child_sa_enumerator,
2496 .remove_child_sa = _remove_child_sa,
2497 .rekey_child_sa = _rekey_child_sa,
2498 .delete_child_sa = _delete_child_sa,
2499 .destroy_child_sa = _destroy_child_sa,
2500 .rekey = _rekey,
2501 .reauth = _reauth,
2502 .reestablish = _reestablish,
2503 .set_auth_lifetime = _set_auth_lifetime,
2504 .roam = _roam,
2505 .inherit_pre = _inherit_pre,
2506 .inherit_post = _inherit_post,
2507 .generate_message = _generate_message,
2508 .generate_message_fragmented = _generate_message_fragmented,
2509 .reset = _reset,
2510 .get_unique_id = _get_unique_id,
2511 .add_virtual_ip = _add_virtual_ip,
2512 .clear_virtual_ips = _clear_virtual_ips,
2513 .create_virtual_ip_enumerator = _create_virtual_ip_enumerator,
2514 .add_configuration_attribute = _add_configuration_attribute,
2515 .create_attribute_enumerator = _create_attribute_enumerator,
2516 .set_kmaddress = _set_kmaddress,
2517 .create_task_enumerator = _create_task_enumerator,
2518 .flush_queue = _flush_queue,
2519 .queue_task = _queue_task,
2520 #ifdef ME
2521 .act_as_mediation_server = _act_as_mediation_server,
2522 .get_server_reflexive_host = _get_server_reflexive_host,
2523 .set_server_reflexive_host = _set_server_reflexive_host,
2524 .get_connect_id = _get_connect_id,
2525 .initiate_mediation = _initiate_mediation,
2526 .initiate_mediated = _initiate_mediated,
2527 .relay = _relay,
2528 .callback = _callback,
2529 .respond = _respond,
2530 #endif /* ME */
2531 },
2532 .ike_sa_id = ike_sa_id->clone(ike_sa_id),
2533 .version = version,
2534 .my_host = host_create_any(AF_INET),
2535 .other_host = host_create_any(AF_INET),
2536 .my_id = identification_create_from_encoding(ID_ANY, chunk_empty),
2537 .other_id = identification_create_from_encoding(ID_ANY, chunk_empty),
2538 .keymat = keymat_create(version, initiator),
2539 .state = IKE_CREATED,
2540 .stats[STAT_INBOUND] = time_monotonic(NULL),
2541 .stats[STAT_OUTBOUND] = time_monotonic(NULL),
2542 .my_auth = auth_cfg_create(),
2543 .other_auth = auth_cfg_create(),
2544 .my_auths = array_create(0, 0),
2545 .other_auths = array_create(0, 0),
2546 .attributes = array_create(sizeof(attribute_entry_t), 0),
2547 .unique_id = ref_get(&unique_id),
2548 .keepalive_interval = lib->settings->get_time(lib->settings,
2549 "%s.keep_alive", KEEPALIVE_INTERVAL, lib->ns),
2550 .retry_initiate_interval = lib->settings->get_time(lib->settings,
2551 "%s.retry_initiate_interval", 0, lib->ns),
2552 .flush_auth_cfg = lib->settings->get_bool(lib->settings,
2553 "%s.flush_auth_cfg", FALSE, lib->ns),
2554 .fragment_size = lib->settings->get_int(lib->settings,
2555 "%s.fragment_size", 0, lib->ns),
2556 );
2557
2558 if (version == IKEV2)
2559 { /* always supported with IKEv2 */
2560 enable_extension(this, EXT_DPD);
2561 }
2562
2563 this->task_manager = task_manager_create(&this->public);
2564 this->my_host->set_port(this->my_host,
2565 charon->socket->get_port(charon->socket, FALSE));
2566
2567 if (!this->task_manager || !this->keymat)
2568 {
2569 DBG1(DBG_IKE, "IKE version %d not supported", this->version);
2570 destroy(this);
2571 return NULL;
2572 }
2573 return &this->public;
2574 }