6b896416abc04e2da1e7f16cd1a6fe5bae6f0011
[strongswan.git] / src / libcharon / sa / ikev1 / tasks / quick_mode.c
1 /*
2 * Copyright (C) 2012-2015 Tobias Brunner
3 * Hochschule fuer Technik Rapperswil
4 *
5 * Copyright (C) 2011 Martin Willi
6 * Copyright (C) 2011 revosec AG
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) 2012 Volker R├╝melin
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 "quick_mode.h"
42
43 #include <string.h>
44
45 #include <daemon.h>
46 #include <sa/ikev1/keymat_v1.h>
47 #include <encoding/payloads/sa_payload.h>
48 #include <encoding/payloads/nonce_payload.h>
49 #include <encoding/payloads/ke_payload.h>
50 #include <encoding/payloads/id_payload.h>
51 #include <encoding/payloads/payload.h>
52 #include <sa/ikev1/tasks/informational.h>
53 #include <sa/ikev1/tasks/quick_delete.h>
54 #include <processing/jobs/inactivity_job.h>
55
56 typedef struct private_quick_mode_t private_quick_mode_t;
57
58 /**
59 * Private members of a quick_mode_t task.
60 */
61 struct private_quick_mode_t {
62
63 /**
64 * Public methods and task_t interface.
65 */
66 quick_mode_t public;
67
68 /**
69 * Assigned IKE_SA.
70 */
71 ike_sa_t *ike_sa;
72
73 /**
74 * TRUE if we are initiating quick mode
75 */
76 bool initiator;
77
78 /**
79 * Traffic selector of initiator
80 */
81 traffic_selector_t *tsi;
82
83 /**
84 * Traffic selector of responder
85 */
86 traffic_selector_t *tsr;
87
88 /**
89 * Initiators nonce
90 */
91 chunk_t nonce_i;
92
93 /**
94 * Responder nonce
95 */
96 chunk_t nonce_r;
97
98 /**
99 * Initiators ESP SPI
100 */
101 uint32_t spi_i;
102
103 /**
104 * Responder ESP SPI
105 */
106 uint32_t spi_r;
107
108 /**
109 * Initiators IPComp CPI
110 */
111 uint16_t cpi_i;
112
113 /**
114 * Responders IPComp CPI
115 */
116 uint16_t cpi_r;
117
118 /**
119 * selected CHILD_SA proposal
120 */
121 proposal_t *proposal;
122
123 /**
124 * Config of CHILD_SA to establish
125 */
126 child_cfg_t *config;
127
128 /**
129 * CHILD_SA we are about to establish
130 */
131 child_sa_t *child_sa;
132
133 /**
134 * IKEv1 keymat
135 */
136 keymat_v1_t *keymat;
137
138 /**
139 * DH exchange, when PFS is in use
140 */
141 diffie_hellman_t *dh;
142
143 /**
144 * Negotiated lifetime of new SA
145 */
146 uint32_t lifetime;
147
148 /**
149 * Negotiated lifebytes of new SA
150 */
151 uint64_t lifebytes;
152
153 /**
154 * Reqid to use, 0 for auto-allocate
155 */
156 uint32_t reqid;
157
158 /**
159 * Explicit inbound mark value to use, if any
160 */
161 u_int mark_in;
162
163 /**
164 * Explicit inbound mark value to use, if any
165 */
166 u_int mark_out;
167
168 /**
169 * SPI of SA we rekey
170 */
171 uint32_t rekey;
172
173 /**
174 * Delete old child after successful rekey
175 */
176 bool delete;
177
178 /**
179 * Negotiated mode, tunnel or transport
180 */
181 ipsec_mode_t mode;
182
183 /*
184 * SA protocol (ESP|AH) negotiated
185 */
186 protocol_id_t proto;
187
188 /**
189 * Use UDP encapsulation
190 */
191 bool udp;
192
193 /**
194 * Message ID of handled quick mode exchange
195 */
196 uint32_t mid;
197
198 /** states of quick mode */
199 enum {
200 QM_INIT,
201 QM_NEGOTIATED,
202 } state;
203 };
204
205 /**
206 * Schedule inactivity timeout for CHILD_SA with reqid, if enabled
207 */
208 static void schedule_inactivity_timeout(private_quick_mode_t *this)
209 {
210 uint32_t timeout;
211 bool close_ike;
212
213 timeout = this->config->get_inactivity(this->config);
214 if (timeout)
215 {
216 close_ike = lib->settings->get_bool(lib->settings,
217 "%s.inactivity_close_ike", FALSE, lib->ns);
218 lib->scheduler->schedule_job(lib->scheduler, (job_t*)
219 inactivity_job_create(this->child_sa->get_unique_id(this->child_sa),
220 timeout, close_ike), timeout);
221 }
222 }
223
224 /**
225 * Check if we have a an address pool configured
226 */
227 static bool have_pool(ike_sa_t *ike_sa)
228 {
229 enumerator_t *enumerator;
230 peer_cfg_t *peer_cfg;
231 char *pool;
232 bool found = FALSE;
233
234 peer_cfg = ike_sa->get_peer_cfg(ike_sa);
235 if (peer_cfg)
236 {
237 enumerator = peer_cfg->create_pool_enumerator(peer_cfg);
238 if (enumerator->enumerate(enumerator, &pool))
239 {
240 found = TRUE;
241 }
242 enumerator->destroy(enumerator);
243 }
244 return found;
245 }
246
247 /**
248 * Get hosts to use for dynamic traffic selectors
249 */
250 static linked_list_t *get_dynamic_hosts(ike_sa_t *ike_sa, bool local)
251 {
252 enumerator_t *enumerator;
253 linked_list_t *list;
254 host_t *host;
255
256 list = linked_list_create();
257 enumerator = ike_sa->create_virtual_ip_enumerator(ike_sa, local);
258 while (enumerator->enumerate(enumerator, &host))
259 {
260 list->insert_last(list, host);
261 }
262 enumerator->destroy(enumerator);
263
264 if (list->get_count(list) == 0)
265 { /* no virtual IPs assigned */
266 if (local)
267 {
268 host = ike_sa->get_my_host(ike_sa);
269 list->insert_last(list, host);
270 }
271 else if (!have_pool(ike_sa))
272 { /* use host only if we don't have a pool configured */
273 host = ike_sa->get_other_host(ike_sa);
274 list->insert_last(list, host);
275 }
276 }
277 return list;
278 }
279
280 /**
281 * Install negotiated CHILD_SA
282 */
283 static bool install(private_quick_mode_t *this)
284 {
285 status_t status, status_i, status_o;
286 chunk_t encr_i, encr_r, integ_i, integ_r;
287 linked_list_t *tsi, *tsr, *my_ts, *other_ts;
288 child_sa_t *old = NULL;
289
290 this->child_sa->set_proposal(this->child_sa, this->proposal);
291 this->child_sa->set_state(this->child_sa, CHILD_INSTALLING);
292 this->child_sa->set_mode(this->child_sa, this->mode);
293
294 if (this->cpi_i && this->cpi_r)
295 { /* DEFLATE is the only transform we currently support */
296 this->child_sa->set_ipcomp(this->child_sa, IPCOMP_DEFLATE);
297 }
298 else
299 {
300 this->cpi_i = this->cpi_r = 0;
301 }
302
303 this->child_sa->set_protocol(this->child_sa,
304 this->proposal->get_protocol(this->proposal));
305
306 status_i = status_o = FAILED;
307 encr_i = encr_r = integ_i = integ_r = chunk_empty;
308 tsi = linked_list_create_with_items(this->tsi->clone(this->tsi), NULL);
309 tsr = linked_list_create_with_items(this->tsr->clone(this->tsr), NULL);
310 if (this->initiator)
311 {
312 charon->bus->narrow(charon->bus, this->child_sa,
313 NARROW_INITIATOR_POST_AUTH, tsi, tsr);
314 }
315 else
316 {
317 charon->bus->narrow(charon->bus, this->child_sa,
318 NARROW_RESPONDER_POST, tsr, tsi);
319 }
320 if (tsi->get_count(tsi) == 0 || tsr->get_count(tsr) == 0)
321 {
322 tsi->destroy_offset(tsi, offsetof(traffic_selector_t, destroy));
323 tsr->destroy_offset(tsr, offsetof(traffic_selector_t, destroy));
324 DBG1(DBG_IKE, "no acceptable traffic selectors found");
325 return FALSE;
326 }
327
328 if (this->keymat->derive_child_keys(this->keymat, this->proposal, this->dh,
329 this->spi_i, this->spi_r, this->nonce_i, this->nonce_r,
330 &encr_i, &integ_i, &encr_r, &integ_r))
331 {
332 if (this->initiator)
333 {
334 status_i = this->child_sa->install(this->child_sa,
335 encr_r, integ_r, this->spi_i, this->cpi_i,
336 this->initiator, TRUE, FALSE, tsi, tsr);
337 status_o = this->child_sa->install(this->child_sa,
338 encr_i, integ_i, this->spi_r, this->cpi_r,
339 this->initiator, FALSE, FALSE, tsi, tsr);
340 }
341 else
342 {
343 status_i = this->child_sa->install(this->child_sa,
344 encr_i, integ_i, this->spi_r, this->cpi_r,
345 this->initiator, TRUE, FALSE, tsr, tsi);
346 status_o = this->child_sa->install(this->child_sa,
347 encr_r, integ_r, this->spi_i, this->cpi_i,
348 this->initiator, FALSE, FALSE, tsr, tsi);
349 }
350 }
351
352 if (status_i != SUCCESS || status_o != SUCCESS)
353 {
354 DBG1(DBG_IKE, "unable to install %s%s%sIPsec SA (SAD) in kernel",
355 (status_i != SUCCESS) ? "inbound " : "",
356 (status_i != SUCCESS && status_o != SUCCESS) ? "and ": "",
357 (status_o != SUCCESS) ? "outbound " : "");
358 tsi->destroy_offset(tsi, offsetof(traffic_selector_t, destroy));
359 tsr->destroy_offset(tsr, offsetof(traffic_selector_t, destroy));
360 status = FAILED;
361 }
362 else
363 {
364 if (this->initiator)
365 {
366 status = this->child_sa->add_policies(this->child_sa, tsi, tsr);
367 }
368 else
369 {
370 status = this->child_sa->add_policies(this->child_sa, tsr, tsi);
371 }
372 tsi->destroy_offset(tsi, offsetof(traffic_selector_t, destroy));
373 tsr->destroy_offset(tsr, offsetof(traffic_selector_t, destroy));
374 if (status != SUCCESS)
375 {
376 DBG1(DBG_IKE, "unable to install IPsec policies (SPD) in kernel");
377 }
378 else
379 {
380 charon->bus->child_derived_keys(charon->bus, this->child_sa,
381 this->initiator, encr_i, encr_r,
382 integ_i, integ_r);
383 }
384 }
385 chunk_clear(&integ_i);
386 chunk_clear(&integ_r);
387 chunk_clear(&encr_i);
388 chunk_clear(&encr_r);
389
390 if (status != SUCCESS)
391 {
392 return FALSE;
393 }
394
395 charon->bus->child_keys(charon->bus, this->child_sa, this->initiator,
396 this->dh, this->nonce_i, this->nonce_r);
397
398 /* add to IKE_SA, and remove from task */
399 this->child_sa->set_state(this->child_sa, CHILD_INSTALLED);
400 this->ike_sa->add_child_sa(this->ike_sa, this->child_sa);
401
402 my_ts = linked_list_create_from_enumerator(
403 this->child_sa->create_ts_enumerator(this->child_sa, TRUE));
404 other_ts = linked_list_create_from_enumerator(
405 this->child_sa->create_ts_enumerator(this->child_sa, FALSE));
406
407 DBG0(DBG_IKE, "CHILD_SA %s{%d} established "
408 "with SPIs %.8x_i %.8x_o and TS %#R === %#R",
409 this->child_sa->get_name(this->child_sa),
410 this->child_sa->get_unique_id(this->child_sa),
411 ntohl(this->child_sa->get_spi(this->child_sa, TRUE)),
412 ntohl(this->child_sa->get_spi(this->child_sa, FALSE)), my_ts, other_ts);
413
414 my_ts->destroy(my_ts);
415 other_ts->destroy(other_ts);
416
417 if (this->rekey)
418 {
419 old = this->ike_sa->get_child_sa(this->ike_sa,
420 this->proposal->get_protocol(this->proposal),
421 this->rekey, TRUE);
422 }
423 if (old)
424 {
425 charon->bus->child_rekey(charon->bus, old, this->child_sa);
426 /* rekeyed CHILD_SAs stay installed until they expire or are deleted
427 * by the other peer */
428 old->set_state(old, CHILD_REKEYED);
429 /* as initiator we delete the CHILD_SA if configured to do so */
430 if (this->initiator && this->delete)
431 {
432 this->ike_sa->queue_task(this->ike_sa,
433 (task_t*)quick_delete_create(this->ike_sa,
434 this->proposal->get_protocol(this->proposal),
435 this->rekey, TRUE, FALSE));
436 }
437 }
438 else
439 {
440 charon->bus->child_updown(charon->bus, this->child_sa, TRUE);
441 }
442 schedule_inactivity_timeout(this);
443 this->child_sa = NULL;
444 return TRUE;
445 }
446
447 /**
448 * Generate and add NONCE
449 */
450 static bool add_nonce(private_quick_mode_t *this, chunk_t *nonce,
451 message_t *message)
452 {
453 nonce_payload_t *nonce_payload;
454 nonce_gen_t *nonceg;
455
456 nonceg = this->keymat->keymat.create_nonce_gen(&this->keymat->keymat);
457 if (!nonceg)
458 {
459 DBG1(DBG_IKE, "no nonce generator found to create nonce");
460 return FALSE;
461 }
462 if (!nonceg->allocate_nonce(nonceg, NONCE_SIZE, nonce))
463 {
464 DBG1(DBG_IKE, "nonce allocation failed");
465 nonceg->destroy(nonceg);
466 return FALSE;
467 }
468 nonceg->destroy(nonceg);
469
470 nonce_payload = nonce_payload_create(PLV1_NONCE);
471 nonce_payload->set_nonce(nonce_payload, *nonce);
472 message->add_payload(message, &nonce_payload->payload_interface);
473
474 return TRUE;
475 }
476
477 /**
478 * Extract nonce from NONCE payload
479 */
480 static bool get_nonce(private_quick_mode_t *this, chunk_t *nonce,
481 message_t *message)
482 {
483 nonce_payload_t *nonce_payload;
484
485 nonce_payload = (nonce_payload_t*)message->get_payload(message, PLV1_NONCE);
486 if (!nonce_payload)
487 {
488 DBG1(DBG_IKE, "NONCE payload missing in message");
489 return FALSE;
490 }
491 *nonce = nonce_payload->get_nonce(nonce_payload);
492
493 return TRUE;
494 }
495
496 /**
497 * Add KE payload to message
498 */
499 static bool add_ke(private_quick_mode_t *this, message_t *message)
500 {
501 ke_payload_t *ke_payload;
502
503 ke_payload = ke_payload_create_from_diffie_hellman(PLV1_KEY_EXCHANGE,
504 this->dh);
505 if (!ke_payload)
506 {
507 DBG1(DBG_IKE, "creating KE payload failed");
508 return FALSE;
509 }
510 message->add_payload(message, &ke_payload->payload_interface);
511 return TRUE;
512 }
513
514 /**
515 * Get DH value from a KE payload
516 */
517 static bool get_ke(private_quick_mode_t *this, message_t *message)
518 {
519 ke_payload_t *ke_payload;
520
521 ke_payload = (ke_payload_t*)message->get_payload(message, PLV1_KEY_EXCHANGE);
522 if (!ke_payload)
523 {
524 DBG1(DBG_IKE, "KE payload missing");
525 return FALSE;
526 }
527 if (!this->dh->set_other_public_value(this->dh,
528 ke_payload->get_key_exchange_data(ke_payload)))
529 {
530 DBG1(DBG_IKE, "unable to apply received KE value");
531 return FALSE;
532 }
533 return TRUE;
534 }
535
536 /**
537 * Select a traffic selector from configuration
538 */
539 static traffic_selector_t* select_ts(private_quick_mode_t *this, bool local,
540 linked_list_t *supplied)
541 {
542 traffic_selector_t *ts;
543 linked_list_t *list, *hosts;
544
545 hosts = get_dynamic_hosts(this->ike_sa, local);
546 list = this->config->get_traffic_selectors(this->config,
547 local, supplied, hosts);
548 hosts->destroy(hosts);
549 if (list->get_first(list, (void**)&ts) == SUCCESS)
550 {
551 ts = ts->clone(ts);
552 }
553 else
554 {
555 DBG1(DBG_IKE, "%s traffic selector missing in configuration",
556 local ? "local" : "remote");
557 ts = NULL;
558 }
559 list->destroy_offset(list, offsetof(traffic_selector_t, destroy));
560 return ts;
561 }
562
563 /**
564 * Add selected traffic selectors to message
565 */
566 static void add_ts(private_quick_mode_t *this, message_t *message)
567 {
568 id_payload_t *id_payload;
569
570 id_payload = id_payload_create_from_ts(this->tsi);
571 message->add_payload(message, &id_payload->payload_interface);
572 id_payload = id_payload_create_from_ts(this->tsr);
573 message->add_payload(message, &id_payload->payload_interface);
574 }
575
576 /**
577 * Get traffic selectors from received message
578 */
579 static bool get_ts(private_quick_mode_t *this, message_t *message)
580 {
581 traffic_selector_t *tsi = NULL, *tsr = NULL;
582 enumerator_t *enumerator;
583 id_payload_t *id_payload;
584 payload_t *payload;
585 host_t *hsi, *hsr;
586 bool first = TRUE;
587
588 enumerator = message->create_payload_enumerator(message);
589 while (enumerator->enumerate(enumerator, &payload))
590 {
591 if (payload->get_type(payload) == PLV1_ID)
592 {
593 id_payload = (id_payload_t*)payload;
594
595 if (first)
596 {
597 tsi = id_payload->get_ts(id_payload);
598 first = FALSE;
599 }
600 else
601 {
602 tsr = id_payload->get_ts(id_payload);
603 break;
604 }
605 }
606 }
607 enumerator->destroy(enumerator);
608
609 /* create host2host selectors if ID payloads missing */
610 if (this->initiator)
611 {
612 hsi = this->ike_sa->get_my_host(this->ike_sa);
613 hsr = this->ike_sa->get_other_host(this->ike_sa);
614 }
615 else
616 {
617 hsr = this->ike_sa->get_my_host(this->ike_sa);
618 hsi = this->ike_sa->get_other_host(this->ike_sa);
619 }
620 if (!tsi)
621 {
622 tsi = traffic_selector_create_from_subnet(hsi->clone(hsi),
623 hsi->get_family(hsi) == AF_INET ? 32 : 128, 0, 0, 65535);
624 }
625 if (!tsr)
626 {
627 tsr = traffic_selector_create_from_subnet(hsr->clone(hsr),
628 hsr->get_family(hsr) == AF_INET ? 32 : 128, 0, 0, 65535);
629 }
630 if (this->mode == MODE_TRANSPORT && this->udp &&
631 (!tsi->is_host(tsi, hsi) || !tsr->is_host(tsr, hsr)))
632 { /* change TS in case of a NAT in transport mode */
633 DBG2(DBG_IKE, "changing received traffic selectors %R=== %R due to NAT",
634 tsi, tsr);
635 tsi->set_address(tsi, hsi);
636 tsr->set_address(tsr, hsr);
637 }
638
639 if (this->initiator)
640 {
641 traffic_selector_t *tsisub, *tsrsub;
642
643 /* check if peer selection is valid */
644 tsisub = this->tsi->get_subset(this->tsi, tsi);
645 tsrsub = this->tsr->get_subset(this->tsr, tsr);
646 if (!tsisub || !tsrsub)
647 {
648 DBG1(DBG_IKE, "peer selected invalid traffic selectors: "
649 "%R for %R, %R for %R", tsi, this->tsi, tsr, this->tsr);
650 DESTROY_IF(tsisub);
651 DESTROY_IF(tsrsub);
652 tsi->destroy(tsi);
653 tsr->destroy(tsr);
654 return FALSE;
655 }
656 tsi->destroy(tsi);
657 tsr->destroy(tsr);
658 this->tsi->destroy(this->tsi);
659 this->tsr->destroy(this->tsr);
660 this->tsi = tsisub;
661 this->tsr = tsrsub;
662 }
663 else
664 {
665 this->tsi = tsi;
666 this->tsr = tsr;
667 }
668 return TRUE;
669 }
670
671 /**
672 * Get encap
673 */
674 static encap_t get_encap(ike_sa_t* ike_sa, bool udp)
675 {
676 if (!udp)
677 {
678 return ENCAP_NONE;
679 }
680 if (ike_sa->supports_extension(ike_sa, EXT_NATT_DRAFT_02_03))
681 {
682 return ENCAP_UDP_DRAFT_00_03;
683 }
684 return ENCAP_UDP;
685 }
686
687 /**
688 * Get NAT-OA payload type (RFC 3947 or RFC 3947 drafts).
689 */
690 static payload_type_t get_nat_oa_payload_type(ike_sa_t *ike_sa)
691 {
692 if (ike_sa->supports_extension(ike_sa, EXT_NATT_DRAFT_02_03))
693 {
694 return PLV1_NAT_OA_DRAFT_00_03;
695 }
696 return PLV1_NAT_OA;
697 }
698
699 /**
700 * Add NAT-OA payloads
701 */
702 static void add_nat_oa_payloads(private_quick_mode_t *this, message_t *message)
703 {
704 identification_t *id;
705 id_payload_t *nat_oa;
706 host_t *src, *dst;
707 payload_type_t nat_oa_payload_type;
708
709 src = message->get_source(message);
710 dst = message->get_destination(message);
711
712 src = this->initiator ? src : dst;
713 dst = this->initiator ? dst : src;
714
715 nat_oa_payload_type = get_nat_oa_payload_type(this->ike_sa);
716
717 /* first NAT-OA is the initiator's address */
718 id = identification_create_from_sockaddr(src->get_sockaddr(src));
719 nat_oa = id_payload_create_from_identification(nat_oa_payload_type, id);
720 message->add_payload(message, (payload_t*)nat_oa);
721 id->destroy(id);
722
723 /* second NAT-OA is that of the responder */
724 id = identification_create_from_sockaddr(dst->get_sockaddr(dst));
725 nat_oa = id_payload_create_from_identification(nat_oa_payload_type, id);
726 message->add_payload(message, (payload_t*)nat_oa);
727 id->destroy(id);
728 }
729
730 /**
731 * Look up lifetimes
732 */
733 static void get_lifetimes(private_quick_mode_t *this)
734 {
735 lifetime_cfg_t *lft;
736
737 lft = this->config->get_lifetime(this->config, TRUE);
738 if (lft->time.life)
739 {
740 this->lifetime = lft->time.life;
741 }
742 if (lft->bytes.life)
743 {
744 this->lifebytes = lft->bytes.life;
745 }
746 free(lft);
747 }
748
749 /**
750 * Check and apply lifetimes
751 */
752 static void apply_lifetimes(private_quick_mode_t *this, sa_payload_t *sa_payload)
753 {
754 uint32_t lifetime;
755 uint64_t lifebytes;
756
757 lifetime = sa_payload->get_lifetime(sa_payload);
758 lifebytes = sa_payload->get_lifebytes(sa_payload);
759 if (this->lifetime != lifetime)
760 {
761 DBG1(DBG_IKE, "received %us lifetime, configured %us",
762 lifetime, this->lifetime);
763 this->lifetime = lifetime;
764 }
765 if (this->lifebytes != lifebytes)
766 {
767 DBG1(DBG_IKE, "received %llu lifebytes, configured %llu",
768 lifebytes, this->lifebytes);
769 this->lifebytes = lifebytes;
770 }
771 }
772
773 /**
774 * Set the task ready to build notify error message
775 */
776 static status_t send_notify(private_quick_mode_t *this, notify_type_t type)
777 {
778 notify_payload_t *notify;
779
780 notify = notify_payload_create_from_protocol_and_type(PLV1_NOTIFY,
781 this->proto, type);
782 notify->set_spi(notify, this->spi_i);
783
784 this->ike_sa->queue_task(this->ike_sa,
785 (task_t*)informational_create(this->ike_sa, notify));
786 /* cancel all active/passive tasks in favour of informational */
787 this->ike_sa->flush_queue(this->ike_sa,
788 this->initiator ? TASK_QUEUE_ACTIVE : TASK_QUEUE_PASSIVE);
789 return ALREADY_DONE;
790 }
791
792 /**
793 * Prepare a list of proposals from child_config containing only the specified
794 * DH group, unless it is set to MODP_NONE.
795 */
796 static linked_list_t *get_proposals(private_quick_mode_t *this,
797 diffie_hellman_group_t group)
798 {
799 linked_list_t *list;
800 proposal_t *proposal;
801 enumerator_t *enumerator;
802
803 list = this->config->get_proposals(this->config, FALSE);
804 enumerator = list->create_enumerator(list);
805 while (enumerator->enumerate(enumerator, &proposal))
806 {
807 if (group != MODP_NONE)
808 {
809 if (!proposal->has_dh_group(proposal, group))
810 {
811 list->remove_at(list, enumerator);
812 proposal->destroy(proposal);
813 continue;
814 }
815 proposal->strip_dh(proposal, group);
816 }
817 proposal->set_spi(proposal, this->spi_i);
818 }
819 enumerator->destroy(enumerator);
820
821 return list;
822 }
823
824 METHOD(task_t, build_i, status_t,
825 private_quick_mode_t *this, message_t *message)
826 {
827 switch (this->state)
828 {
829 case QM_INIT:
830 {
831 sa_payload_t *sa_payload;
832 linked_list_t *list, *tsi, *tsr;
833 proposal_t *proposal;
834 diffie_hellman_group_t group;
835 encap_t encap;
836
837 this->udp = this->ike_sa->has_condition(this->ike_sa, COND_NAT_ANY);
838 this->mode = this->config->get_mode(this->config);
839 this->child_sa = child_sa_create(
840 this->ike_sa->get_my_host(this->ike_sa),
841 this->ike_sa->get_other_host(this->ike_sa),
842 this->config, this->reqid, this->udp,
843 this->mark_in, this->mark_out);
844
845 if (this->udp && this->mode == MODE_TRANSPORT)
846 {
847 /* TODO-IKEv1: disable NAT-T for TRANSPORT mode by default? */
848 add_nat_oa_payloads(this, message);
849 }
850
851 if (this->config->use_ipcomp(this->config))
852 {
853 this->cpi_i = this->child_sa->alloc_cpi(this->child_sa);
854 if (!this->cpi_i)
855 {
856 DBG1(DBG_IKE, "unable to allocate a CPI from kernel, "
857 "IPComp disabled");
858 }
859 }
860
861 list = this->config->get_proposals(this->config, MODP_NONE);
862 if (list->get_first(list, (void**)&proposal) == SUCCESS)
863 {
864 this->proto = proposal->get_protocol(proposal);
865 }
866 list->destroy_offset(list, offsetof(proposal_t, destroy));
867 this->spi_i = this->child_sa->alloc_spi(this->child_sa, this->proto);
868 if (!this->spi_i)
869 {
870 DBG1(DBG_IKE, "allocating SPI from kernel failed");
871 return FAILED;
872 }
873
874 group = this->config->get_dh_group(this->config);
875 if (group != MODP_NONE)
876 {
877 proposal_t *proposal;
878 uint16_t preferred_group;
879
880 proposal = this->ike_sa->get_proposal(this->ike_sa);
881 proposal->get_algorithm(proposal, DIFFIE_HELLMAN_GROUP,
882 &preferred_group, NULL);
883 /* try the negotiated DH group from IKE_SA */
884 list = get_proposals(this, preferred_group);
885 if (list->get_count(list))
886 {
887 group = preferred_group;
888 }
889 else
890 {
891 /* fall back to the first configured DH group */
892 list->destroy(list);
893 list = get_proposals(this, group);
894 }
895
896 this->dh = this->keymat->keymat.create_dh(&this->keymat->keymat,
897 group);
898 if (!this->dh)
899 {
900 DBG1(DBG_IKE, "configured DH group %N not supported",
901 diffie_hellman_group_names, group);
902 list->destroy_offset(list, offsetof(proposal_t, destroy));
903 return FAILED;
904 }
905 }
906 else
907 {
908 list = get_proposals(this, MODP_NONE);
909 }
910
911 get_lifetimes(this);
912 encap = get_encap(this->ike_sa, this->udp);
913 sa_payload = sa_payload_create_from_proposals_v1(list,
914 this->lifetime, this->lifebytes, AUTH_NONE,
915 this->mode, encap, this->cpi_i);
916 list->destroy_offset(list, offsetof(proposal_t, destroy));
917 message->add_payload(message, &sa_payload->payload_interface);
918
919 if (!add_nonce(this, &this->nonce_i, message))
920 {
921 return FAILED;
922 }
923 if (group != MODP_NONE)
924 {
925 if (!add_ke(this, message))
926 {
927 return FAILED;
928 }
929 }
930 if (!this->tsi)
931 {
932 this->tsi = select_ts(this, TRUE, NULL);
933 }
934 if (!this->tsr)
935 {
936 this->tsr = select_ts(this, FALSE, NULL);
937 }
938 tsi = linked_list_create_with_items(this->tsi, NULL);
939 tsr = linked_list_create_with_items(this->tsr, NULL);
940 this->tsi = this->tsr = NULL;
941 charon->bus->narrow(charon->bus, this->child_sa,
942 NARROW_INITIATOR_PRE_AUTH, tsi, tsr);
943 tsi->remove_first(tsi, (void**)&this->tsi);
944 tsr->remove_first(tsr, (void**)&this->tsr);
945 tsi->destroy_offset(tsi, offsetof(traffic_selector_t, destroy));
946 tsr->destroy_offset(tsr, offsetof(traffic_selector_t, destroy));
947 if (!this->tsi || !this->tsr)
948 {
949 return FAILED;
950 }
951 add_ts(this, message);
952 return NEED_MORE;
953 }
954 case QM_NEGOTIATED:
955 {
956 return SUCCESS;
957 }
958 default:
959 return FAILED;
960 }
961 }
962
963 /**
964 * Check for notify errors, return TRUE if error found
965 */
966 static bool has_notify_errors(private_quick_mode_t *this, message_t *message)
967 {
968 enumerator_t *enumerator;
969 payload_t *payload;
970 bool err = FALSE;
971
972 enumerator = message->create_payload_enumerator(message);
973 while (enumerator->enumerate(enumerator, &payload))
974 {
975 if (payload->get_type(payload) == PLV1_NOTIFY)
976 {
977 notify_payload_t *notify;
978 notify_type_t type;
979
980 notify = (notify_payload_t*)payload;
981 type = notify->get_notify_type(notify);
982 if (type < 16384)
983 {
984
985 DBG1(DBG_IKE, "received %N error notify",
986 notify_type_names, type);
987 err = TRUE;
988 }
989 else
990 {
991 DBG1(DBG_IKE, "received %N notify", notify_type_names, type);
992 }
993 }
994 }
995 enumerator->destroy(enumerator);
996
997 return err;
998 }
999
1000 /**
1001 * Check if this is a rekey for an existing CHILD_SA, reuse reqid if so
1002 */
1003 static void check_for_rekeyed_child(private_quick_mode_t *this)
1004 {
1005 enumerator_t *enumerator, *policies;
1006 traffic_selector_t *local, *remote;
1007 child_sa_t *child_sa;
1008 proposal_t *proposal;
1009 char *name;
1010
1011 name = this->config->get_name(this->config);
1012 enumerator = this->ike_sa->create_child_sa_enumerator(this->ike_sa);
1013 while (this->reqid == 0 && enumerator->enumerate(enumerator, &child_sa))
1014 {
1015 if (streq(child_sa->get_name(child_sa), name))
1016 {
1017 proposal = child_sa->get_proposal(child_sa);
1018 switch (child_sa->get_state(child_sa))
1019 {
1020 case CHILD_INSTALLED:
1021 case CHILD_REKEYING:
1022 policies = child_sa->create_policy_enumerator(child_sa);
1023 if (policies->enumerate(policies, &local, &remote) &&
1024 local->equals(local, this->tsr) &&
1025 remote->equals(remote, this->tsi) &&
1026 this->proposal->equals(this->proposal, proposal))
1027 {
1028 this->reqid = child_sa->get_reqid(child_sa);
1029 this->rekey = child_sa->get_spi(child_sa, TRUE);
1030 this->mark_in = child_sa->get_mark(child_sa,
1031 TRUE).value;
1032 this->mark_out = child_sa->get_mark(child_sa,
1033 FALSE).value;
1034 child_sa->set_state(child_sa, CHILD_REKEYING);
1035 DBG1(DBG_IKE, "detected rekeying of CHILD_SA %s{%u}",
1036 child_sa->get_name(child_sa),
1037 child_sa->get_unique_id(child_sa));
1038 }
1039 policies->destroy(policies);
1040 break;
1041 case CHILD_REKEYED:
1042 default:
1043 break;
1044 }
1045 }
1046 }
1047 enumerator->destroy(enumerator);
1048 }
1049
1050 METHOD(task_t, process_r, status_t,
1051 private_quick_mode_t *this, message_t *message)
1052 {
1053 if (this->mid && this->mid != message->get_message_id(message))
1054 { /* not responsible for this quick mode exchange */
1055 return INVALID_ARG;
1056 }
1057
1058 switch (this->state)
1059 {
1060 case QM_INIT:
1061 {
1062 sa_payload_t *sa_payload;
1063 linked_list_t *tsi, *tsr, *hostsi, *hostsr, *list = NULL;
1064 peer_cfg_t *peer_cfg;
1065 uint16_t group;
1066 bool private, prefer_configured;
1067
1068 sa_payload = (sa_payload_t*)message->get_payload(message,
1069 PLV1_SECURITY_ASSOCIATION);
1070 if (!sa_payload)
1071 {
1072 DBG1(DBG_IKE, "sa payload missing");
1073 return send_notify(this, INVALID_PAYLOAD_TYPE);
1074 }
1075
1076 this->mode = sa_payload->get_encap_mode(sa_payload, &this->udp);
1077
1078 if (!get_ts(this, message))
1079 {
1080 return FAILED;
1081 }
1082 peer_cfg = this->ike_sa->get_peer_cfg(this->ike_sa);
1083 tsi = linked_list_create_with_items(this->tsi, NULL);
1084 tsr = linked_list_create_with_items(this->tsr, NULL);
1085 this->tsi = this->tsr = NULL;
1086 hostsi = get_dynamic_hosts(this->ike_sa, FALSE);
1087 hostsr = get_dynamic_hosts(this->ike_sa, TRUE);
1088 this->config = peer_cfg->select_child_cfg(peer_cfg, tsr, tsi,
1089 hostsr, hostsi);
1090 hostsi->destroy(hostsi);
1091 hostsr->destroy(hostsr);
1092 if (this->config)
1093 {
1094 this->tsi = select_ts(this, FALSE, tsi);
1095 this->tsr = select_ts(this, TRUE, tsr);
1096 }
1097 tsi->destroy_offset(tsi, offsetof(traffic_selector_t, destroy));
1098 tsr->destroy_offset(tsr, offsetof(traffic_selector_t, destroy));
1099 if (!this->config || !this->tsi || !this->tsr ||
1100 this->mode != this->config->get_mode(this->config))
1101 {
1102 DBG1(DBG_IKE, "no matching CHILD_SA config found");
1103 return send_notify(this, INVALID_ID_INFORMATION);
1104 }
1105
1106 if (this->config->use_ipcomp(this->config))
1107 {
1108 list = sa_payload->get_ipcomp_proposals(sa_payload,
1109 &this->cpi_i);
1110 if (!list->get_count(list))
1111 {
1112 DBG1(DBG_IKE, "expected IPComp proposal but peer did "
1113 "not send one, IPComp disabled");
1114 this->cpi_i = 0;
1115 }
1116 }
1117 if (!list || !list->get_count(list))
1118 {
1119 DESTROY_IF(list);
1120 list = sa_payload->get_proposals(sa_payload);
1121 }
1122 private = this->ike_sa->supports_extension(this->ike_sa,
1123 EXT_STRONGSWAN);
1124 prefer_configured = lib->settings->get_bool(lib->settings,
1125 "%s.prefer_configured_proposals", TRUE, lib->ns);
1126 this->proposal = this->config->select_proposal(this->config, list,
1127 FALSE, private, prefer_configured);
1128 list->destroy_offset(list, offsetof(proposal_t, destroy));
1129
1130 get_lifetimes(this);
1131 apply_lifetimes(this, sa_payload);
1132
1133 if (!this->proposal)
1134 {
1135 DBG1(DBG_IKE, "no matching proposal found, sending %N",
1136 notify_type_names, NO_PROPOSAL_CHOSEN);
1137 return send_notify(this, NO_PROPOSAL_CHOSEN);
1138 }
1139 this->spi_i = this->proposal->get_spi(this->proposal);
1140
1141 if (!get_nonce(this, &this->nonce_i, message))
1142 {
1143 return send_notify(this, INVALID_PAYLOAD_TYPE);
1144 }
1145
1146 if (this->proposal->get_algorithm(this->proposal,
1147 DIFFIE_HELLMAN_GROUP, &group, NULL))
1148 {
1149 this->dh = this->keymat->keymat.create_dh(&this->keymat->keymat,
1150 group);
1151 if (!this->dh)
1152 {
1153 DBG1(DBG_IKE, "negotiated DH group %N not supported",
1154 diffie_hellman_group_names, group);
1155 return send_notify(this, INVALID_KEY_INFORMATION);
1156 }
1157 if (!get_ke(this, message))
1158 {
1159 return send_notify(this, INVALID_PAYLOAD_TYPE);
1160 }
1161 }
1162
1163 check_for_rekeyed_child(this);
1164
1165 this->child_sa = child_sa_create(
1166 this->ike_sa->get_my_host(this->ike_sa),
1167 this->ike_sa->get_other_host(this->ike_sa),
1168 this->config, this->reqid, this->udp,
1169 this->mark_in, this->mark_out);
1170
1171 tsi = linked_list_create_with_items(this->tsi, NULL);
1172 tsr = linked_list_create_with_items(this->tsr, NULL);
1173 this->tsi = this->tsr = NULL;
1174 charon->bus->narrow(charon->bus, this->child_sa,
1175 NARROW_RESPONDER, tsr, tsi);
1176 if (tsi->remove_first(tsi, (void**)&this->tsi) != SUCCESS ||
1177 tsr->remove_first(tsr, (void**)&this->tsr) != SUCCESS)
1178 {
1179 tsi->destroy_offset(tsi, offsetof(traffic_selector_t, destroy));
1180 tsr->destroy_offset(tsr, offsetof(traffic_selector_t, destroy));
1181 return send_notify(this, INVALID_ID_INFORMATION);
1182 }
1183 tsi->destroy_offset(tsi, offsetof(traffic_selector_t, destroy));
1184 tsr->destroy_offset(tsr, offsetof(traffic_selector_t, destroy));
1185
1186 return NEED_MORE;
1187 }
1188 case QM_NEGOTIATED:
1189 {
1190 if (has_notify_errors(this, message))
1191 {
1192 return SUCCESS;
1193 }
1194 if (message->get_exchange_type(message) == INFORMATIONAL_V1)
1195 {
1196 if (message->get_payload(message, PLV1_DELETE))
1197 {
1198 /* If the DELETE for a Quick Mode follows immediately
1199 * after rekeying, we might receive it before the
1200 * third completing Quick Mode message. Ignore it, as
1201 * it gets handled by a separately queued delete task. */
1202 return NEED_MORE;
1203 }
1204 return SUCCESS;
1205 }
1206 if (!install(this))
1207 {
1208 ike_sa_t *ike_sa = this->ike_sa;
1209 task_t *task;
1210
1211 task = (task_t*)quick_delete_create(this->ike_sa,
1212 this->proposal->get_protocol(this->proposal),
1213 this->spi_i, TRUE, TRUE);
1214 /* flush_queue() destroys the current task */
1215 ike_sa->flush_queue(ike_sa, TASK_QUEUE_PASSIVE);
1216 ike_sa->queue_task(ike_sa, task);
1217 return ALREADY_DONE;
1218 }
1219 return SUCCESS;
1220 }
1221 default:
1222 return FAILED;
1223 }
1224 }
1225
1226 METHOD(task_t, build_r, status_t,
1227 private_quick_mode_t *this, message_t *message)
1228 {
1229 if (this->mid && this->mid != message->get_message_id(message))
1230 { /* not responsible for this quick mode exchange */
1231 return INVALID_ARG;
1232 }
1233
1234 switch (this->state)
1235 {
1236 case QM_INIT:
1237 {
1238 sa_payload_t *sa_payload;
1239 encap_t encap;
1240
1241 this->proto = this->proposal->get_protocol(this->proposal);
1242 this->spi_r = this->child_sa->alloc_spi(this->child_sa, this->proto);
1243 if (!this->spi_r)
1244 {
1245 DBG1(DBG_IKE, "allocating SPI from kernel failed");
1246 return send_notify(this, NO_PROPOSAL_CHOSEN);
1247 }
1248 this->proposal->set_spi(this->proposal, this->spi_r);
1249
1250 if (this->cpi_i)
1251 {
1252 this->cpi_r = this->child_sa->alloc_cpi(this->child_sa);
1253 if (!this->cpi_r)
1254 {
1255 DBG1(DBG_IKE, "unable to allocate a CPI from "
1256 "kernel, IPComp disabled");
1257 return send_notify(this, NO_PROPOSAL_CHOSEN);
1258 }
1259 }
1260
1261 if (this->udp && this->mode == MODE_TRANSPORT)
1262 {
1263 /* TODO-IKEv1: disable NAT-T for TRANSPORT mode by default? */
1264 add_nat_oa_payloads(this, message);
1265 }
1266
1267 encap = get_encap(this->ike_sa, this->udp);
1268 sa_payload = sa_payload_create_from_proposal_v1(this->proposal,
1269 this->lifetime, this->lifebytes, AUTH_NONE,
1270 this->mode, encap, this->cpi_r);
1271 message->add_payload(message, &sa_payload->payload_interface);
1272
1273 if (!add_nonce(this, &this->nonce_r, message))
1274 {
1275 return FAILED;
1276 }
1277 if (this->dh)
1278 {
1279 if (!add_ke(this, message))
1280 {
1281 return FAILED;
1282 }
1283 }
1284
1285 add_ts(this, message);
1286
1287 this->state = QM_NEGOTIATED;
1288 this->mid = message->get_message_id(message);
1289 return NEED_MORE;
1290 }
1291 case QM_NEGOTIATED:
1292 if (message->get_exchange_type(message) == INFORMATIONAL_V1)
1293 {
1294 /* skip INFORMATIONAL response if we received a INFORMATIONAL
1295 * delete, see process_r() */
1296 return ALREADY_DONE;
1297 }
1298 /* fall */
1299 default:
1300 return FAILED;
1301 }
1302 }
1303
1304 METHOD(task_t, process_i, status_t,
1305 private_quick_mode_t *this, message_t *message)
1306 {
1307 switch (this->state)
1308 {
1309 case QM_INIT:
1310 {
1311 sa_payload_t *sa_payload;
1312 linked_list_t *list = NULL;
1313 bool private;
1314
1315 sa_payload = (sa_payload_t*)message->get_payload(message,
1316 PLV1_SECURITY_ASSOCIATION);
1317 if (!sa_payload)
1318 {
1319 DBG1(DBG_IKE, "sa payload missing");
1320 return send_notify(this, NO_PROPOSAL_CHOSEN);
1321 }
1322 if (this->cpi_i)
1323 {
1324 list = sa_payload->get_ipcomp_proposals(sa_payload,
1325 &this->cpi_r);
1326 if (!list->get_count(list))
1327 {
1328 DBG1(DBG_IKE, "peer did not acccept our IPComp proposal, "
1329 "IPComp disabled");
1330 this->cpi_i = 0;
1331 }
1332 }
1333 if (!list || !list->get_count(list))
1334 {
1335 DESTROY_IF(list);
1336 list = sa_payload->get_proposals(sa_payload);
1337 }
1338 private = this->ike_sa->supports_extension(this->ike_sa,
1339 EXT_STRONGSWAN);
1340 this->proposal = this->config->select_proposal(this->config, list,
1341 FALSE, private, TRUE);
1342 list->destroy_offset(list, offsetof(proposal_t, destroy));
1343 if (!this->proposal)
1344 {
1345 DBG1(DBG_IKE, "no matching proposal found");
1346 return send_notify(this, NO_PROPOSAL_CHOSEN);
1347 }
1348 this->spi_r = this->proposal->get_spi(this->proposal);
1349
1350 apply_lifetimes(this, sa_payload);
1351
1352 if (!get_nonce(this, &this->nonce_r, message))
1353 {
1354 return send_notify(this, INVALID_PAYLOAD_TYPE);
1355 }
1356 if (this->dh && !get_ke(this, message))
1357 {
1358 return send_notify(this, INVALID_KEY_INFORMATION);
1359 }
1360 if (!get_ts(this, message))
1361 {
1362 return send_notify(this, INVALID_PAYLOAD_TYPE);
1363 }
1364 if (!install(this))
1365 {
1366 return send_notify(this, NO_PROPOSAL_CHOSEN);
1367 }
1368 this->state = QM_NEGOTIATED;
1369 return NEED_MORE;
1370 }
1371 default:
1372 return FAILED;
1373 }
1374 }
1375
1376 METHOD(task_t, get_type, task_type_t,
1377 private_quick_mode_t *this)
1378 {
1379 return TASK_QUICK_MODE;
1380 }
1381
1382 METHOD(quick_mode_t, get_mid, uint32_t,
1383 private_quick_mode_t *this)
1384 {
1385 return this->mid;
1386 }
1387
1388 METHOD(quick_mode_t, use_reqid, void,
1389 private_quick_mode_t *this, uint32_t reqid)
1390 {
1391 this->reqid = reqid;
1392 }
1393
1394 METHOD(quick_mode_t, use_marks, void,
1395 private_quick_mode_t *this, u_int in, u_int out)
1396 {
1397 this->mark_in = in;
1398 this->mark_out = out;
1399 }
1400
1401 METHOD(quick_mode_t, rekey, void,
1402 private_quick_mode_t *this, uint32_t spi)
1403 {
1404 this->rekey = spi;
1405 }
1406
1407 METHOD(task_t, migrate, void,
1408 private_quick_mode_t *this, ike_sa_t *ike_sa)
1409 {
1410 chunk_free(&this->nonce_i);
1411 chunk_free(&this->nonce_r);
1412 DESTROY_IF(this->tsi);
1413 DESTROY_IF(this->tsr);
1414 DESTROY_IF(this->proposal);
1415 DESTROY_IF(this->child_sa);
1416 DESTROY_IF(this->dh);
1417
1418 this->ike_sa = ike_sa;
1419 this->keymat = (keymat_v1_t*)ike_sa->get_keymat(ike_sa);
1420 this->state = QM_INIT;
1421 this->mid = 0;
1422 this->tsi = NULL;
1423 this->tsr = NULL;
1424 this->proposal = NULL;
1425 this->child_sa = NULL;
1426 this->dh = NULL;
1427 this->spi_i = 0;
1428 this->spi_r = 0;
1429 this->mark_in = 0;
1430 this->mark_out = 0;
1431
1432 if (!this->initiator)
1433 {
1434 DESTROY_IF(this->config);
1435 this->config = NULL;
1436 }
1437 }
1438
1439 METHOD(task_t, destroy, void,
1440 private_quick_mode_t *this)
1441 {
1442 chunk_free(&this->nonce_i);
1443 chunk_free(&this->nonce_r);
1444 DESTROY_IF(this->tsi);
1445 DESTROY_IF(this->tsr);
1446 DESTROY_IF(this->proposal);
1447 DESTROY_IF(this->child_sa);
1448 DESTROY_IF(this->config);
1449 DESTROY_IF(this->dh);
1450 free(this);
1451 }
1452
1453 /*
1454 * Described in header.
1455 */
1456 quick_mode_t *quick_mode_create(ike_sa_t *ike_sa, child_cfg_t *config,
1457 traffic_selector_t *tsi, traffic_selector_t *tsr)
1458 {
1459 private_quick_mode_t *this;
1460
1461 INIT(this,
1462 .public = {
1463 .task = {
1464 .get_type = _get_type,
1465 .migrate = _migrate,
1466 .destroy = _destroy,
1467 },
1468 .get_mid = _get_mid,
1469 .use_reqid = _use_reqid,
1470 .use_marks = _use_marks,
1471 .rekey = _rekey,
1472 },
1473 .ike_sa = ike_sa,
1474 .initiator = config != NULL,
1475 .config = config,
1476 .keymat = (keymat_v1_t*)ike_sa->get_keymat(ike_sa),
1477 .state = QM_INIT,
1478 .tsi = tsi ? tsi->clone(tsi) : NULL,
1479 .tsr = tsr ? tsr->clone(tsr) : NULL,
1480 .proto = PROTO_ESP,
1481 .delete = lib->settings->get_bool(lib->settings,
1482 "%s.delete_rekeyed", FALSE, lib->ns),
1483 );
1484
1485 if (config)
1486 {
1487 this->public.task.build = _build_i;
1488 this->public.task.process = _process_i;
1489 }
1490 else
1491 {
1492 this->public.task.build = _build_r;
1493 this->public.task.process = _process_r;
1494 }
1495
1496 return &this->public;
1497 }