182f5e80d5bc35f408bd092c44d95034fc2830ba
[strongswan.git] / src / libcharon / sa / ikev1 / tasks / main_mode.c
1 /*
2 * Copyright (C) 2011-2012 Tobias Brunner
3 * HSR 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 #include "main_mode.h"
20
21 #include <string.h>
22
23 #include <daemon.h>
24 #include <sa/ikev1/phase1.h>
25 #include <encoding/payloads/sa_payload.h>
26 #include <encoding/payloads/id_payload.h>
27 #include <encoding/payloads/hash_payload.h>
28 #include <sa/ikev1/tasks/xauth.h>
29 #include <sa/ikev1/tasks/mode_config.h>
30 #include <sa/ikev1/tasks/informational.h>
31 #include <sa/ikev1/tasks/isakmp_delete.h>
32 #include <processing/jobs/adopt_children_job.h>
33 #include <processing/jobs/delete_ike_sa_job.h>
34
35 typedef struct private_main_mode_t private_main_mode_t;
36
37 /**
38 * Private members of a main_mode_t task.
39 */
40 struct private_main_mode_t {
41
42 /**
43 * Public methods and task_t interface.
44 */
45 main_mode_t public;
46
47 /**
48 * Assigned IKE_SA.
49 */
50 ike_sa_t *ike_sa;
51
52 /**
53 * Are we the initiator?
54 */
55 bool initiator;
56
57 /**
58 * Common phase 1 helper class
59 */
60 phase1_t *ph1;
61
62 /**
63 * IKE config to establish
64 */
65 ike_cfg_t *ike_cfg;
66
67 /**
68 * Peer config to use
69 */
70 peer_cfg_t *peer_cfg;
71
72 /**
73 * selected IKE proposal
74 */
75 proposal_t *proposal;
76
77 /**
78 * Negotiated SA lifetime
79 */
80 uint32_t lifetime;
81
82 /**
83 * Negotiated authentication method
84 */
85 auth_method_t method;
86
87 /** states of main mode */
88 enum {
89 MM_INIT,
90 MM_SA,
91 MM_KE,
92 MM_AUTH,
93 } state;
94 };
95
96 /**
97 * Set IKE_SA to established state
98 */
99 static bool establish(private_main_mode_t *this)
100 {
101 if (!charon->bus->authorize(charon->bus, TRUE))
102 {
103 DBG1(DBG_IKE, "final authorization hook forbids IKE_SA, cancelling");
104 return FALSE;
105 }
106
107 DBG0(DBG_IKE, "IKE_SA %s[%d] established between %H[%Y]...%H[%Y]",
108 this->ike_sa->get_name(this->ike_sa),
109 this->ike_sa->get_unique_id(this->ike_sa),
110 this->ike_sa->get_my_host(this->ike_sa),
111 this->ike_sa->get_my_id(this->ike_sa),
112 this->ike_sa->get_other_host(this->ike_sa),
113 this->ike_sa->get_other_id(this->ike_sa));
114
115 this->ike_sa->set_state(this->ike_sa, IKE_ESTABLISHED);
116 charon->bus->ike_updown(charon->bus, this->ike_sa, TRUE);
117
118 return TRUE;
119 }
120
121 /**
122 * Check for notify errors, return TRUE if error found
123 */
124 static bool has_notify_errors(private_main_mode_t *this, message_t *message)
125 {
126 enumerator_t *enumerator;
127 payload_t *payload;
128 bool err = FALSE;
129
130 enumerator = message->create_payload_enumerator(message);
131 while (enumerator->enumerate(enumerator, &payload))
132 {
133 if (payload->get_type(payload) == PLV1_NOTIFY)
134 {
135 notify_payload_t *notify;
136 notify_type_t type;
137
138 notify = (notify_payload_t*)payload;
139 type = notify->get_notify_type(notify);
140 if (type < 16384)
141 {
142 DBG1(DBG_IKE, "received %N error notify",
143 notify_type_names, type);
144 err = TRUE;
145 }
146 else if (type == INITIAL_CONTACT_IKEV1)
147 {
148 if (!this->initiator && this->state == MM_AUTH)
149 {
150 /* If authenticated and received INITIAL_CONTACT,
151 * delete any existing IKE_SAs with that peer.
152 * The delete takes place when the SA is checked in due
153 * to other id not known until the 3rd message.*/
154 this->ike_sa->set_condition(this->ike_sa,
155 COND_INIT_CONTACT_SEEN, TRUE);
156 }
157 }
158 else
159 {
160 DBG1(DBG_IKE, "received %N notify", notify_type_names, type);
161 }
162 }
163 }
164 enumerator->destroy(enumerator);
165
166 return err;
167 }
168
169 /**
170 * Queue a task sending a notify in an INFORMATIONAL exchange
171 */
172 static status_t send_notify(private_main_mode_t *this, notify_type_t type)
173 {
174 notify_payload_t *notify;
175 ike_sa_id_t *ike_sa_id;
176 uint64_t spi_i, spi_r;
177 chunk_t spi;
178
179 notify = notify_payload_create_from_protocol_and_type(PLV1_NOTIFY,
180 PROTO_IKE, type);
181 ike_sa_id = this->ike_sa->get_id(this->ike_sa);
182 spi_i = ike_sa_id->get_initiator_spi(ike_sa_id);
183 spi_r = ike_sa_id->get_responder_spi(ike_sa_id);
184 spi = chunk_cata("cc", chunk_from_thing(spi_i), chunk_from_thing(spi_r));
185 notify->set_spi_data(notify, spi);
186
187 this->ike_sa->queue_task(this->ike_sa,
188 (task_t*)informational_create(this->ike_sa, notify));
189 /* cancel all active/passive tasks in favour of informational */
190 this->ike_sa->flush_queue(this->ike_sa,
191 this->initiator ? TASK_QUEUE_ACTIVE : TASK_QUEUE_PASSIVE);
192 return ALREADY_DONE;
193 }
194
195 /**
196 * Queue a delete task if authentication failed as initiator
197 */
198 static status_t send_delete(private_main_mode_t *this)
199 {
200 this->ike_sa->queue_task(this->ike_sa,
201 (task_t*)isakmp_delete_create(this->ike_sa, TRUE));
202 /* cancel all active tasks in favour of informational */
203 this->ike_sa->flush_queue(this->ike_sa,
204 this->initiator ? TASK_QUEUE_ACTIVE : TASK_QUEUE_PASSIVE);
205 return ALREADY_DONE;
206 }
207
208 /**
209 * Add an INITIAL_CONTACT notify if first contact with peer
210 */
211 static void add_initial_contact(private_main_mode_t *this, message_t *message,
212 identification_t *idi)
213 {
214 identification_t *idr;
215 host_t *host;
216 notify_payload_t *notify;
217 ike_sa_id_t *ike_sa_id;
218 uint64_t spi_i, spi_r;
219 chunk_t spi;
220
221 idr = this->ph1->get_id(this->ph1, this->peer_cfg, FALSE);
222 if (idr && !idr->contains_wildcards(idr))
223 {
224 if (this->peer_cfg->get_unique_policy(this->peer_cfg) != UNIQUE_NEVER)
225 {
226 host = this->ike_sa->get_other_host(this->ike_sa);
227 if (!charon->ike_sa_manager->has_contact(charon->ike_sa_manager,
228 idi, idr, host->get_family(host)))
229 {
230 notify = notify_payload_create_from_protocol_and_type(
231 PLV1_NOTIFY, PROTO_IKE, INITIAL_CONTACT_IKEV1);
232 ike_sa_id = this->ike_sa->get_id(this->ike_sa);
233 spi_i = ike_sa_id->get_initiator_spi(ike_sa_id);
234 spi_r = ike_sa_id->get_responder_spi(ike_sa_id);
235 spi = chunk_cata("cc", chunk_from_thing(spi_i),
236 chunk_from_thing(spi_r));
237 notify->set_spi_data(notify, spi);
238 message->add_payload(message, (payload_t*)notify);
239 }
240 }
241 }
242 }
243
244 METHOD(task_t, build_i, status_t,
245 private_main_mode_t *this, message_t *message)
246 {
247 switch (this->state)
248 {
249 case MM_INIT:
250 {
251 sa_payload_t *sa_payload;
252 linked_list_t *proposals;
253 packet_t *packet;
254
255 DBG0(DBG_IKE, "initiating Main Mode IKE_SA %s[%d] to %H",
256 this->ike_sa->get_name(this->ike_sa),
257 this->ike_sa->get_unique_id(this->ike_sa),
258 this->ike_sa->get_other_host(this->ike_sa));
259 this->ike_sa->set_state(this->ike_sa, IKE_CONNECTING);
260
261 this->ike_cfg = this->ike_sa->get_ike_cfg(this->ike_sa);
262 this->peer_cfg = this->ike_sa->get_peer_cfg(this->ike_sa);
263 this->peer_cfg->get_ref(this->peer_cfg);
264
265 this->method = this->ph1->get_auth_method(this->ph1, this->peer_cfg);
266 if (this->method == AUTH_NONE)
267 {
268 DBG1(DBG_CFG, "configuration uses unsupported authentication");
269 return FAILED;
270 }
271 this->lifetime = this->peer_cfg->get_reauth_time(this->peer_cfg,
272 FALSE);
273 if (!this->lifetime)
274 { /* fall back to rekey time of no rekey time configured */
275 this->lifetime = this->peer_cfg->get_rekey_time(this->peer_cfg,
276 FALSE);
277 }
278 this->lifetime += this->peer_cfg->get_over_time(this->peer_cfg);
279 proposals = this->ike_cfg->get_proposals(this->ike_cfg);
280 sa_payload = sa_payload_create_from_proposals_v1(proposals,
281 this->lifetime, 0, this->method, MODE_NONE,
282 ENCAP_NONE, 0);
283 proposals->destroy_offset(proposals, offsetof(proposal_t, destroy));
284
285 message->add_payload(message, &sa_payload->payload_interface);
286
287 /* pregenerate message to store SA payload */
288 if (this->ike_sa->generate_message(this->ike_sa, message,
289 &packet) != SUCCESS)
290 {
291 DBG1(DBG_IKE, "pregenerating SA payload failed");
292 return FAILED;
293 }
294 packet->destroy(packet);
295 if (!this->ph1->save_sa_payload(this->ph1, message))
296 {
297 return FAILED;
298 }
299
300 this->state = MM_SA;
301 return NEED_MORE;
302 }
303 case MM_SA:
304 {
305 uint16_t group;
306
307 if (!this->ph1->create_hasher(this->ph1))
308 {
309 return send_notify(this, NO_PROPOSAL_CHOSEN);
310 }
311 if (!this->proposal->get_algorithm(this->proposal,
312 DIFFIE_HELLMAN_GROUP, &group, NULL))
313 {
314 DBG1(DBG_IKE, "DH group selection failed");
315 return send_notify(this, NO_PROPOSAL_CHOSEN);
316 }
317 if (!this->ph1->create_dh(this->ph1, group))
318 {
319 DBG1(DBG_IKE, "negotiated DH group not supported");
320 return send_notify(this, INVALID_KEY_INFORMATION);
321 }
322 if (!this->ph1->add_nonce_ke(this->ph1, message))
323 {
324 return send_notify(this, INVALID_KEY_INFORMATION);
325 }
326 this->state = MM_KE;
327 return NEED_MORE;
328 }
329 case MM_KE:
330 {
331 id_payload_t *id_payload;
332 identification_t *id;
333
334 id = this->ph1->get_id(this->ph1, this->peer_cfg, TRUE);
335 if (!id)
336 {
337 DBG1(DBG_CFG, "own identity not known");
338 charon->bus->alert(charon->bus, ALERT_LOCAL_AUTH_FAILED);
339 return send_notify(this, INVALID_ID_INFORMATION);
340 }
341 this->ike_sa->set_my_id(this->ike_sa, id->clone(id));
342 id_payload = id_payload_create_from_identification(PLV1_ID, id);
343 message->add_payload(message, &id_payload->payload_interface);
344
345 if (!this->ph1->build_auth(this->ph1, this->method, message,
346 id_payload->get_encoded(id_payload)))
347 {
348 charon->bus->alert(charon->bus, ALERT_LOCAL_AUTH_FAILED);
349 return send_notify(this, AUTHENTICATION_FAILED);
350 }
351
352 add_initial_contact(this, message, id);
353
354 this->state = MM_AUTH;
355 return NEED_MORE;
356 }
357 default:
358 return FAILED;
359 }
360 }
361
362 METHOD(task_t, process_r, status_t,
363 private_main_mode_t *this, message_t *message)
364 {
365 switch (this->state)
366 {
367 case MM_INIT:
368 {
369 linked_list_t *list;
370 sa_payload_t *sa_payload;
371 bool private, prefer_configured;
372
373 this->ike_cfg = this->ike_sa->get_ike_cfg(this->ike_sa);
374 DBG0(DBG_IKE, "%H is initiating a Main Mode IKE_SA",
375 message->get_source(message));
376 this->ike_sa->set_state(this->ike_sa, IKE_CONNECTING);
377
378 this->ike_sa->update_hosts(this->ike_sa,
379 message->get_destination(message),
380 message->get_source(message), TRUE);
381
382 sa_payload = (sa_payload_t*)message->get_payload(message,
383 PLV1_SECURITY_ASSOCIATION);
384 if (!sa_payload)
385 {
386 DBG1(DBG_IKE, "SA payload missing");
387 return send_notify(this, INVALID_PAYLOAD_TYPE);
388 }
389 if (!this->ph1->save_sa_payload(this->ph1, message))
390 {
391 return send_notify(this, INVALID_PAYLOAD_TYPE);
392 }
393
394 list = sa_payload->get_proposals(sa_payload);
395 private = this->ike_sa->supports_extension(this->ike_sa,
396 EXT_STRONGSWAN);
397 prefer_configured = lib->settings->get_bool(lib->settings,
398 "%s.prefer_configured_proposals", TRUE, lib->ns);
399 this->proposal = this->ike_cfg->select_proposal(this->ike_cfg,
400 list, private, prefer_configured);
401 list->destroy_offset(list, offsetof(proposal_t, destroy));
402 if (!this->proposal)
403 {
404 DBG1(DBG_IKE, "no proposal found");
405 return send_notify(this, NO_PROPOSAL_CHOSEN);
406 }
407 this->ike_sa->set_proposal(this->ike_sa, this->proposal);
408
409 this->method = sa_payload->get_auth_method(sa_payload);
410 this->lifetime = sa_payload->get_lifetime(sa_payload);
411
412 this->state = MM_SA;
413 return NEED_MORE;
414 }
415 case MM_SA:
416 {
417 uint16_t group;
418
419 if (!this->ph1->create_hasher(this->ph1))
420 {
421 return send_notify(this, INVALID_KEY_INFORMATION);
422 }
423 if (!this->proposal->get_algorithm(this->proposal,
424 DIFFIE_HELLMAN_GROUP, &group, NULL))
425 {
426 DBG1(DBG_IKE, "DH group selection failed");
427 return send_notify(this, INVALID_KEY_INFORMATION);
428 }
429 if (!this->ph1->create_dh(this->ph1, group))
430 {
431 DBG1(DBG_IKE, "negotiated DH group not supported");
432 return send_notify(this, INVALID_KEY_INFORMATION);
433 }
434 if (!this->ph1->get_nonce_ke(this->ph1, message))
435 {
436 return send_notify(this, INVALID_PAYLOAD_TYPE);
437 }
438 this->state = MM_KE;
439 return NEED_MORE;
440 }
441 case MM_KE:
442 {
443 id_payload_t *id_payload;
444 identification_t *id;
445
446 id_payload = (id_payload_t*)message->get_payload(message, PLV1_ID);
447 if (!id_payload)
448 {
449 DBG1(DBG_IKE, "IDii payload missing");
450 charon->bus->alert(charon->bus, ALERT_PEER_AUTH_FAILED);
451 return send_notify(this, INVALID_PAYLOAD_TYPE);
452 }
453 id = id_payload->get_identification(id_payload);
454 this->ike_sa->set_other_id(this->ike_sa, id);
455
456 while (TRUE)
457 {
458 DESTROY_IF(this->peer_cfg);
459 this->peer_cfg = this->ph1->select_config(this->ph1,
460 this->method, FALSE, id);
461 if (!this->peer_cfg)
462 {
463 charon->bus->alert(charon->bus, ALERT_PEER_AUTH_FAILED);
464 return send_notify(this, AUTHENTICATION_FAILED);
465 }
466 this->ike_sa->set_peer_cfg(this->ike_sa, this->peer_cfg);
467
468 if (this->ph1->verify_auth(this->ph1, this->method, message,
469 id_payload->get_encoded(id_payload)))
470 {
471 break;
472 }
473 }
474
475 if (!charon->bus->authorize(charon->bus, FALSE))
476 {
477 DBG1(DBG_IKE, "Main Mode authorization hook forbids IKE_SA, "
478 "cancelling");
479 return send_notify(this, AUTHENTICATION_FAILED);
480 }
481
482 this->state = MM_AUTH;
483 if (has_notify_errors(this, message))
484 {
485 return FAILED;
486 }
487 return NEED_MORE;
488 }
489 default:
490 return FAILED;
491 }
492 }
493
494 METHOD(task_t, build_r, status_t,
495 private_main_mode_t *this, message_t *message)
496 {
497 switch (this->state)
498 {
499 case MM_SA:
500 {
501 sa_payload_t *sa_payload;
502
503 sa_payload = sa_payload_create_from_proposal_v1(this->proposal,
504 this->lifetime, 0, this->method, MODE_NONE,
505 ENCAP_NONE, 0);
506 message->add_payload(message, &sa_payload->payload_interface);
507
508 return NEED_MORE;
509 }
510 case MM_KE:
511 {
512 if (!this->ph1->add_nonce_ke(this->ph1, message))
513 {
514 return send_notify(this, INVALID_KEY_INFORMATION);
515 }
516 if (!this->ph1->derive_keys(this->ph1, this->peer_cfg, this->method))
517 {
518 return send_notify(this, INVALID_KEY_INFORMATION);
519 }
520 return NEED_MORE;
521 }
522 case MM_AUTH:
523 {
524 id_payload_t *id_payload;
525 identification_t *id;
526 adopt_children_job_t *job = NULL;
527 xauth_t *xauth = NULL;
528
529 id = this->ph1->get_id(this->ph1, this->peer_cfg, TRUE);
530 if (!id)
531 {
532 DBG1(DBG_CFG, "own identity not known");
533 charon->bus->alert(charon->bus, ALERT_LOCAL_AUTH_FAILED);
534 return send_notify(this, INVALID_ID_INFORMATION);
535 }
536 this->ike_sa->set_my_id(this->ike_sa, id->clone(id));
537
538 id_payload = id_payload_create_from_identification(PLV1_ID, id);
539 message->add_payload(message, &id_payload->payload_interface);
540
541 if (!this->ph1->build_auth(this->ph1, this->method, message,
542 id_payload->get_encoded(id_payload)))
543 {
544 charon->bus->alert(charon->bus, ALERT_LOCAL_AUTH_FAILED);
545 return send_notify(this, AUTHENTICATION_FAILED);
546 }
547
548 switch (this->method)
549 {
550 case AUTH_XAUTH_INIT_PSK:
551 case AUTH_XAUTH_INIT_RSA:
552 case AUTH_HYBRID_INIT_RSA:
553 xauth = xauth_create(this->ike_sa, TRUE);
554 this->ike_sa->queue_task(this->ike_sa, (task_t*)xauth);
555 break;
556 case AUTH_XAUTH_RESP_PSK:
557 case AUTH_XAUTH_RESP_RSA:
558 case AUTH_HYBRID_RESP_RSA:
559 /* wait for XAUTH request */
560 break;
561 default:
562 if (charon->ike_sa_manager->check_uniqueness(
563 charon->ike_sa_manager, this->ike_sa, FALSE))
564 {
565 DBG1(DBG_IKE, "cancelling Main Mode due to uniqueness "
566 "policy");
567 return send_notify(this, AUTHENTICATION_FAILED);
568 }
569 if (!establish(this))
570 {
571 return send_notify(this, AUTHENTICATION_FAILED);
572 }
573 job = adopt_children_job_create(
574 this->ike_sa->get_id(this->ike_sa));
575 break;
576 }
577 if (this->ph1->has_virtual_ip(this->ph1, this->peer_cfg))
578 {
579 if (this->peer_cfg->use_pull_mode(this->peer_cfg))
580 {
581 this->ike_sa->queue_task(this->ike_sa,
582 (task_t*)mode_config_create(this->ike_sa, TRUE, TRUE));
583 }
584 }
585 else if (this->ph1->has_pool(this->ph1, this->peer_cfg))
586 {
587 if (!this->peer_cfg->use_pull_mode(this->peer_cfg))
588 {
589 if (job)
590 {
591 job->queue_task(job, (task_t*)
592 mode_config_create(this->ike_sa, TRUE, FALSE));
593 }
594 else if (xauth)
595 {
596 xauth->queue_mode_config_push(xauth);
597 }
598 else
599 {
600 this->ike_sa->queue_task(this->ike_sa, (task_t*)
601 mode_config_create(this->ike_sa, TRUE, FALSE));
602 }
603 }
604 }
605 if (job)
606 {
607 lib->processor->queue_job(lib->processor, (job_t*)job);
608 }
609 return SUCCESS;
610 }
611 default:
612 return FAILED;
613 }
614 }
615
616 /**
617 * Schedule a timeout for the IKE_SA should it not establish
618 */
619 static void schedule_timeout(ike_sa_t *ike_sa)
620 {
621 job_t *job;
622
623 job = (job_t*)delete_ike_sa_job_create(ike_sa->get_id(ike_sa), FALSE);
624 lib->scheduler->schedule_job(lib->scheduler, job, HALF_OPEN_IKE_SA_TIMEOUT);
625 }
626
627 METHOD(task_t, process_i, status_t,
628 private_main_mode_t *this, message_t *message)
629 {
630 switch (this->state)
631 {
632 case MM_SA:
633 {
634 linked_list_t *list;
635 sa_payload_t *sa_payload;
636 auth_method_t method;
637 uint32_t lifetime;
638 bool private;
639
640 sa_payload = (sa_payload_t*)message->get_payload(message,
641 PLV1_SECURITY_ASSOCIATION);
642 if (!sa_payload)
643 {
644 DBG1(DBG_IKE, "SA payload missing");
645 return send_notify(this, INVALID_PAYLOAD_TYPE);
646 }
647 list = sa_payload->get_proposals(sa_payload);
648 private = this->ike_sa->supports_extension(this->ike_sa,
649 EXT_STRONGSWAN);
650 this->proposal = this->ike_cfg->select_proposal(this->ike_cfg,
651 list, private, TRUE);
652 list->destroy_offset(list, offsetof(proposal_t, destroy));
653 if (!this->proposal)
654 {
655 DBG1(DBG_IKE, "no proposal found");
656 return send_notify(this, NO_PROPOSAL_CHOSEN);
657 }
658 this->ike_sa->set_proposal(this->ike_sa, this->proposal);
659
660 lifetime = sa_payload->get_lifetime(sa_payload);
661 if (lifetime != this->lifetime)
662 {
663 DBG1(DBG_IKE, "received lifetime %us does not match configured "
664 "lifetime %us", lifetime, this->lifetime);
665 }
666 this->lifetime = lifetime;
667 method = sa_payload->get_auth_method(sa_payload);
668 if (method != this->method)
669 {
670 DBG1(DBG_IKE, "received %N authentication, but configured %N, "
671 "continue with configured", auth_method_names, method,
672 auth_method_names, this->method);
673 }
674 return NEED_MORE;
675 }
676 case MM_KE:
677 {
678 if (!this->ph1->get_nonce_ke(this->ph1, message))
679 {
680 return send_notify(this, INVALID_PAYLOAD_TYPE);
681 }
682 if (!this->ph1->derive_keys(this->ph1, this->peer_cfg, this->method))
683 {
684 return send_notify(this, INVALID_KEY_INFORMATION);
685 }
686 return NEED_MORE;
687 }
688 case MM_AUTH:
689 {
690 id_payload_t *id_payload;
691 identification_t *id, *cid;
692
693 id_payload = (id_payload_t*)message->get_payload(message, PLV1_ID);
694 if (!id_payload)
695 {
696 DBG1(DBG_IKE, "IDir payload missing");
697 charon->bus->alert(charon->bus, ALERT_PEER_AUTH_FAILED);
698 return send_delete(this);
699 }
700 id = id_payload->get_identification(id_payload);
701 cid = this->ph1->get_id(this->ph1, this->peer_cfg, FALSE);
702 if (cid && !id->matches(id, cid))
703 {
704 DBG1(DBG_IKE, "IDir '%Y' does not match to '%Y'", id, cid);
705 id->destroy(id);
706 charon->bus->alert(charon->bus, ALERT_PEER_AUTH_FAILED);
707 return send_delete(this);
708 }
709 this->ike_sa->set_other_id(this->ike_sa, id);
710
711 if (!this->ph1->verify_auth(this->ph1, this->method, message,
712 id_payload->get_encoded(id_payload)))
713 {
714 charon->bus->alert(charon->bus, ALERT_PEER_AUTH_FAILED);
715 return send_delete(this);
716 }
717 if (!charon->bus->authorize(charon->bus, FALSE))
718 {
719 DBG1(DBG_IKE, "Main Mode authorization hook forbids IKE_SA, "
720 "cancelling");
721 return send_delete(this);
722 }
723
724 switch (this->method)
725 {
726 case AUTH_XAUTH_INIT_PSK:
727 case AUTH_XAUTH_INIT_RSA:
728 case AUTH_HYBRID_INIT_RSA:
729 /* wait for XAUTH request */
730 schedule_timeout(this->ike_sa);
731 break;
732 case AUTH_XAUTH_RESP_PSK:
733 case AUTH_XAUTH_RESP_RSA:
734 case AUTH_HYBRID_RESP_RSA:
735 this->ike_sa->queue_task(this->ike_sa,
736 (task_t*)xauth_create(this->ike_sa, TRUE));
737 break;
738 default:
739 if (charon->ike_sa_manager->check_uniqueness(
740 charon->ike_sa_manager, this->ike_sa, FALSE))
741 {
742 DBG1(DBG_IKE, "cancelling Main Mode due to uniqueness "
743 "policy");
744 return send_delete(this);
745 }
746 if (!establish(this))
747 {
748 return send_delete(this);
749 }
750 break;
751 }
752 /* check for and prepare mode config push/pull */
753 if (this->ph1->has_virtual_ip(this->ph1, this->peer_cfg))
754 {
755 if (this->peer_cfg->use_pull_mode(this->peer_cfg))
756 {
757 this->ike_sa->queue_task(this->ike_sa,
758 (task_t*)mode_config_create(this->ike_sa, TRUE, TRUE));
759 }
760 else
761 {
762 schedule_timeout(this->ike_sa);
763 }
764 }
765 else if (this->ph1->has_pool(this->ph1, this->peer_cfg))
766 {
767 if (this->peer_cfg->use_pull_mode(this->peer_cfg))
768 {
769 schedule_timeout(this->ike_sa);
770 }
771 else
772 {
773 this->ike_sa->queue_task(this->ike_sa,
774 (task_t*)mode_config_create(this->ike_sa, TRUE, FALSE));
775 }
776 }
777 return SUCCESS;
778 }
779 default:
780 return FAILED;
781 }
782 }
783
784 METHOD(task_t, get_type, task_type_t,
785 private_main_mode_t *this)
786 {
787 return TASK_MAIN_MODE;
788 }
789
790 METHOD(task_t, migrate, void,
791 private_main_mode_t *this, ike_sa_t *ike_sa)
792 {
793 DESTROY_IF(this->peer_cfg);
794 DESTROY_IF(this->proposal);
795 this->ph1->destroy(this->ph1);
796
797 this->ike_sa = ike_sa;
798 this->state = MM_INIT;
799 this->peer_cfg = NULL;
800 this->proposal = NULL;
801 this->ph1 = phase1_create(ike_sa, this->initiator);
802 }
803
804 METHOD(task_t, destroy, void,
805 private_main_mode_t *this)
806 {
807 DESTROY_IF(this->peer_cfg);
808 DESTROY_IF(this->proposal);
809 this->ph1->destroy(this->ph1);
810 free(this);
811 }
812
813 /*
814 * Described in header.
815 */
816 main_mode_t *main_mode_create(ike_sa_t *ike_sa, bool initiator)
817 {
818 private_main_mode_t *this;
819
820 INIT(this,
821 .public = {
822 .task = {
823 .get_type = _get_type,
824 .migrate = _migrate,
825 .destroy = _destroy,
826 },
827 },
828 .ike_sa = ike_sa,
829 .ph1 = phase1_create(ike_sa, initiator),
830 .initiator = initiator,
831 .state = MM_INIT,
832 );
833
834 if (initiator)
835 {
836 this->public.task.build = _build_i;
837 this->public.task.process = _process_i;
838 }
839 else
840 {
841 this->public.task.build = _build_r;
842 this->public.task.process = _process_r;
843 }
844
845 return &this->public;
846 }