- added notify message handling to ike_sa_init_requested_t and
[strongswan.git] / Source / charon / sa / ike_sa.c
1 /**
2 * @file ike_sa.c
3 *
4 * @brief Implementation of ike_sa_t.
5 *
6 */
7
8 /*
9 * Copyright (C) 2005 Jan Hutter, Martin Willi
10 * Hochschule fuer Technik Rapperswil
11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2 of the License, or (at your
15 * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
19 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
20 * for more details.
21 */
22
23 #include "ike_sa.h"
24
25 #include <types.h>
26 #include <daemon.h>
27 #include <definitions.h>
28 #include <utils/allocator.h>
29 #include <utils/linked_list.h>
30 #include <utils/logger_manager.h>
31 #include <utils/randomizer.h>
32 #include <transforms/diffie_hellman.h>
33 #include <transforms/prf_plus.h>
34 #include <transforms/crypters/crypter.h>
35 #include <encoding/payloads/sa_payload.h>
36 #include <encoding/payloads/nonce_payload.h>
37 #include <encoding/payloads/ke_payload.h>
38 #include <encoding/payloads/transform_substructure.h>
39 #include <encoding/payloads/transform_attribute.h>
40 #include <sa/states/initiator_init.h>
41 #include <sa/states/responder_init.h>
42 #include <queues/jobs/delete_ike_sa_job.h>
43
44
45
46
47 typedef struct private_ike_sa_t private_ike_sa_t;
48
49 /**
50 * Private data of an ike_sa_t object.
51 */
52 struct private_ike_sa_t {
53
54 /**
55 * Protected part of a ike_sa_t object.
56 */
57 protected_ike_sa_t protected;
58
59 /**
60 * Creates a job to delete the given IKE_SA.
61 *
62 * @param this calling object
63 */
64 status_t (*create_delete_job) (private_ike_sa_t *this);
65
66 /**
67 * Resends the last sent reply.
68 *
69 * @param this calling object
70 */
71 status_t (*resend_last_reply) (private_ike_sa_t *this);
72
73 /* private values */
74
75 /**
76 * Identifier for the current IKE_SA
77 */
78 ike_sa_id_t *ike_sa_id;
79
80 /**
81 * Linked List containing the child sa's of the current IKE_SA
82 */
83 linked_list_t *child_sas;
84
85 /**
86 * TODO
87 */
88 init_config_t *init_config;
89
90 /**
91 * TODO
92 */
93 sa_config_t *sa_config;
94
95 /**
96 * Current state of the IKE_SA
97 */
98 state_t *current_state;
99
100 /**
101 * this SA's source for random data
102 */
103 randomizer_t *randomizer;
104
105 /**
106 * contains the last responded message
107 *
108 */
109 message_t *last_responded_message;
110
111 /**
112 * contains the last requested message
113 *
114 */
115 message_t *last_requested_message;
116
117 /**
118 * Informations of this host
119 */
120 struct {
121 host_t *host;
122 } me;
123
124 /**
125 * Informations of the other host
126 */
127 struct {
128 host_t *host;
129 } other;
130
131 /**
132 * Crypter object for initiator
133 */
134 crypter_t *crypter_initiator;
135
136 /**
137 * Crypter object for responder
138 */
139 crypter_t *crypter_responder;
140
141 /**
142 * Signer object for initiator
143 */
144 signer_t *signer_initiator;
145
146 /**
147 * Signer object for responder
148 */
149 signer_t *signer_responder;
150
151 /**
152 * prf function
153 */
154 prf_t *prf;
155
156
157
158 /**
159 * Shared secrets
160 */
161 struct {
162 /**
163 * Key used for deriving other keys
164 */
165 chunk_t d_key;
166
167 /**
168 * Key for authenticate (initiator)
169 */
170 chunk_t ai_key;
171
172 /**
173 * Key for authenticate (responder)
174 */
175 chunk_t ar_key;
176
177 /**
178 * Key for encryption (initiator)
179 */
180 chunk_t ei_key;
181
182 /**
183 * Key for encryption (responder)
184 */
185 chunk_t er_key;
186
187 /**
188 * Key for generating auth payload (initiator)
189 */
190 chunk_t pi_key;
191
192 /**
193 * Key for generating auth payload (responder)
194 */
195 chunk_t pr_key;
196
197 } secrets;
198
199 /**
200 * next message id to receive
201 */
202 u_int32_t message_id_in;
203
204 /**
205 * next message id to send
206 */
207 u_int32_t message_id_out;
208
209 /**
210 * a logger for this IKE_SA
211 */
212 logger_t *logger;
213 };
214
215
216 /**
217 * Implements protected_ike_sa_t.process_message.
218 */
219 static status_t process_message (private_ike_sa_t *this, message_t *message)
220 {
221 u_int32_t message_id;
222 exchange_type_t exchange_type;
223 bool is_request;
224
225 /* we must process each request or response from remote host */
226
227 /* find out type of message (request or response) */
228 is_request = message->get_request(message);
229 exchange_type = message->get_exchange_type(message);
230
231 this->logger->log(this->logger, CONTROL, "Process %s message of exchange type %s",(is_request) ? "REQUEST" : "RESPONSE",mapping_find(exchange_type_m,exchange_type));
232
233 message_id = message->get_message_id(message);
234
235 /*
236 * It has to be checked, if the message has to be resent cause of lost packets!
237 */
238 if (is_request && (message_id == (this->message_id_in - 1)))
239 {
240 /* message can be resent ! */
241 this->logger->log(this->logger, CONTROL|MORE, "Resent message detected. Send stored reply");
242 return (this->resend_last_reply(this));
243 }
244
245 /* Now, the message id is checked for request AND reply */
246 if (is_request)
247 {
248 /* In a request, the message has to be this->message_id_in (other case is already handled) */
249 if (message_id != this->message_id_in)
250 {
251 this->logger->log(this->logger, ERROR | MORE, "Message request with message id %d received, but %d expected",message_id,this->message_id_in);
252 return FAILED;
253 }
254 }
255 else
256 {
257 /* In a reply, the message has to be this->message_id_out -1 cause it is the reply to the last sent message*/
258 if (message_id != (this->message_id_out - 1))
259 {
260 this->logger->log(this->logger, ERROR | MORE, "Message reply with message id %d received, but %d expected",message_id,this->message_id_in);
261 return FAILED;
262 }
263 }
264
265 /* now the message is processed by the current state object */
266 /* the current state does change the current change to the next one*/
267 return this->current_state->process_message(this->current_state,message);
268 }
269
270 /**
271 * Implements protected_ike_sa_t.build_message.
272 */
273 static void build_message(private_ike_sa_t *this, exchange_type_t type, bool request, message_t **message)
274 {
275 message_t *new_message;
276 host_t *source, *destination;
277
278 this->logger->log(this->logger, CONTROL|MORE, "build empty message");
279 new_message = message_create();
280
281 source = this->me.host->clone(this->me.host);
282 destination = this->other.host->clone(this->other.host);
283
284 new_message->set_source(new_message, source);
285 new_message->set_destination(new_message, destination);
286 new_message->set_exchange_type(new_message, type);
287 new_message->set_request(new_message, request);
288 new_message->set_message_id(new_message, (request) ? this->message_id_out : this->message_id_in);
289 new_message->set_ike_sa_id(new_message, this->ike_sa_id);
290 *message = new_message;
291 }
292
293 /**
294 * Implements protected_ike_sa_t.process_configuration.
295 */
296 static status_t initialize_connection(private_ike_sa_t *this, char *name)
297 {
298 /* work is done in state object of type INITIATOR_INIT */
299 initiator_init_t *current_state;
300 status_t status;
301
302 if (this->current_state->get_state(this->current_state) != INITIATOR_INIT)
303 {
304 return FAILED;
305 }
306
307 current_state = (initiator_init_t *) this->current_state;
308
309 status = current_state->initiate_connection(current_state,name);
310
311 return status;
312 }
313
314 /**
315 * Implements protected_ike_sa_t.get_id.
316 */
317 static ike_sa_id_t* get_id(private_ike_sa_t *this)
318 {
319 return this->ike_sa_id;
320 }
321
322 /**
323 * Implements protected_ike_sa_t.compute_secrets.
324 */
325 static void compute_secrets(private_ike_sa_t *this,chunk_t dh_shared_secret,chunk_t initiator_nonce, chunk_t responder_nonce)
326 {
327 chunk_t concatenated_nonces;
328 chunk_t skeyseed;
329 chunk_t prf_plus_seed;
330 u_int64_t initiator_spi;
331 u_int64_t responder_spi;
332 prf_plus_t *prf_plus;
333
334
335 /*
336 * TODO check length for specific prf's
337 */
338 concatenated_nonces.len = (initiator_nonce.len + responder_nonce.len);
339 concatenated_nonces.ptr = allocator_alloc(concatenated_nonces.len);
340
341 /* first is initiator */
342 memcpy(concatenated_nonces.ptr,initiator_nonce.ptr,initiator_nonce.len);
343 /* second is responder */
344 memcpy(concatenated_nonces.ptr + initiator_nonce.len,responder_nonce.ptr,responder_nonce.len);
345
346 this->logger->log_chunk(this->logger, RAW, "Nonce data", &concatenated_nonces);
347
348 /* status of set_key is not checked */
349 this->prf->set_key(this->prf,concatenated_nonces);
350
351 this->prf->allocate_bytes(this->prf,dh_shared_secret,&skeyseed);
352
353 allocator_free_chunk(&concatenated_nonces);
354
355 prf_plus_seed.len = (initiator_nonce.len + responder_nonce.len + 16);
356 prf_plus_seed.ptr = allocator_alloc(prf_plus_seed.len);
357
358 /* first is initiator */
359 memcpy(prf_plus_seed.ptr,initiator_nonce.ptr,initiator_nonce.len);
360 /* second is responder */
361 memcpy(prf_plus_seed.ptr + initiator_nonce.len,responder_nonce.ptr,responder_nonce.len);
362 /* third is initiator spi */
363 initiator_spi = this->ike_sa_id->get_initiator_spi(this->ike_sa_id);
364 memcpy(prf_plus_seed.ptr + initiator_nonce.len + responder_nonce.len,&initiator_spi,8);
365 /* fourth is responder spi */
366 responder_spi = this->ike_sa_id->get_responder_spi(this->ike_sa_id);
367 memcpy(prf_plus_seed.ptr + initiator_nonce.len + responder_nonce.len + 8,&responder_spi,8);
368
369 this->logger->log_chunk(this->logger, PRIVATE | MORE, "Keyseed", &skeyseed);
370 this->logger->log_chunk(this->logger, PRIVATE | MORE, "PRF+ Seed", &prf_plus_seed);
371
372 this->logger->log(this->logger, CONTROL | MOST, "Set new key of prf object");
373 this->prf->set_key(this->prf,skeyseed);
374 allocator_free_chunk(&skeyseed);
375
376 this->logger->log(this->logger, CONTROL | MOST, "Create new prf+ object");
377 prf_plus = prf_plus_create(this->prf, prf_plus_seed);
378 allocator_free_chunk(&prf_plus_seed);
379
380 prf_plus->allocate_bytes(prf_plus,this->prf->get_block_size(this->prf),&(this->secrets.d_key));
381 this->logger->log_chunk(this->logger, PRIVATE, "Sk_d secret", &(this->secrets.d_key));
382
383 prf_plus->allocate_bytes(prf_plus,this->signer_initiator->get_key_size(this->signer_initiator),&(this->secrets.ai_key));
384 this->logger->log_chunk(this->logger, PRIVATE, "Sk_ai secret", &(this->secrets.ai_key));
385 this->signer_initiator->set_key(this->signer_initiator,this->secrets.ai_key);
386
387 prf_plus->allocate_bytes(prf_plus,this->signer_responder->get_key_size(this->signer_responder),&(this->secrets.ar_key));
388 this->logger->log_chunk(this->logger, PRIVATE, "Sk_ar secret", &(this->secrets.ar_key));
389 this->signer_responder->set_key(this->signer_responder,this->secrets.ar_key);
390
391
392 prf_plus->allocate_bytes(prf_plus,this->crypter_initiator->get_block_size(this->crypter_initiator),&(this->secrets.ei_key));
393 this->logger->log_chunk(this->logger, PRIVATE, "Sk_ei secret", &(this->secrets.ei_key));
394 this->crypter_initiator->set_key(this->crypter_initiator,this->secrets.ei_key);
395
396 prf_plus->allocate_bytes(prf_plus,this->crypter_responder->get_block_size(this->crypter_responder),&(this->secrets.er_key));
397 this->logger->log_chunk(this->logger, PRIVATE, "Sk_er secret", &(this->secrets.er_key));
398 this->crypter_responder->set_key(this->crypter_responder,this->secrets.er_key);
399
400 prf_plus->allocate_bytes(prf_plus,this->crypter_responder->get_block_size(this->crypter_responder),&(this->secrets.pi_key));
401 this->logger->log_chunk(this->logger, PRIVATE, "Sk_pi secret", &(this->secrets.pi_key));
402
403 prf_plus->allocate_bytes(prf_plus,this->crypter_responder->get_block_size(this->crypter_responder),&(this->secrets.pr_key));
404 this->logger->log_chunk(this->logger, PRIVATE, "Sk_pr secret", &(this->secrets.pr_key));
405
406 prf_plus->destroy(prf_plus);
407 }
408
409 /**
410 * Implements protected_ike_sa_t.resend_last_reply.
411 */
412 static status_t resend_last_reply(private_ike_sa_t *this)
413 {
414 packet_t *packet;
415 status_t status;
416
417 status = this->last_responded_message->generate(this->last_responded_message, NULL, NULL, &packet);
418 if (status != SUCCESS)
419 {
420 this->logger->log(this->logger, ERROR, "Could not generate message to resent");
421 return status;
422 }
423
424 charon->send_queue->add(charon->send_queue, packet);
425 return SUCCESS;
426 }
427
428 /**
429 * Implements protected_ike_sa_t.resend_last_reply.
430 */
431 static status_t create_delete_job(private_ike_sa_t *this)
432 {
433 job_t *delete_job;
434
435 this->logger->log(this->logger, CONTROL | MORE, "Going to create job to delete this IKE_SA");
436
437 delete_job = (job_t *) delete_ike_sa_job_create(this->ike_sa_id);
438 charon->job_queue->add(charon->job_queue,delete_job);
439
440 return SUCCESS;
441 }
442
443 /**
444 * Implementation of protected_ike_sa_t.set_new_state.
445 */
446 static void set_new_state (private_ike_sa_t *this, state_t *state)
447 {
448 this->logger->log(this->logger, ERROR, "Change current state %s to %s",mapping_find(ike_sa_state_m,this->current_state->get_state(this->current_state)),mapping_find(ike_sa_state_m,state->get_state(state)));
449 this->current_state = state;
450 }
451
452 /**
453 * Implementation of protected_ike_sa_t.get_logger.
454 */
455 static logger_t *get_logger (private_ike_sa_t *this)
456 {
457 return this->logger;
458 }
459
460 /**
461 * Implementation of protected_ike_sa_t.get_my_host.
462 */
463 static host_t *get_my_host (private_ike_sa_t *this)
464 {
465 return this->me.host;
466 }
467
468 /**
469 * Implementation of protected_ike_sa_t.get_other_host.
470 */
471 static host_t *get_other_host (private_ike_sa_t *this)
472 {
473 return this->other.host;
474 }
475
476 /**
477 * Implementation of protected_ike_sa_t.get_init_config.
478 */
479 static init_config_t *get_init_config (private_ike_sa_t *this)
480 {
481 return this->init_config;
482 }
483
484 /**
485 * Implementation of protected_ike_sa_t.set_init_config.
486 */
487 static void set_init_config (private_ike_sa_t *this,init_config_t * init_config)
488 {
489 this->init_config = init_config;
490 }
491
492 /**
493 * Implementation of protected_ike_sa_t.get_sa_config.
494 */
495 static sa_config_t *get_sa_config (private_ike_sa_t *this)
496 {
497 return this->sa_config;
498 }
499
500 /**
501 * Implementation of protected_ike_sa_t.set_sa_config.
502 */
503 static void set_sa_config (private_ike_sa_t *this,sa_config_t * sa_config)
504 {
505 this->sa_config = sa_config;
506 }
507
508 /**
509 * Implementation of protected_ike_sa_t.set_my_host.
510 */
511 static void set_my_host (private_ike_sa_t *this, host_t *my_host)
512 {
513 this->me.host = my_host;
514 }
515
516 /**
517 * Implementation of protected_ike_sa_t.set_other_host.
518 */
519 static void set_other_host (private_ike_sa_t *this, host_t *other_host)
520 {
521 this->other.host = other_host;
522 }
523
524 /**
525 * Implementation of protected_ike_sa_t.set_prf.
526 */
527 static status_t create_transforms_from_proposal (private_ike_sa_t *this,ike_proposal_t *proposal)
528 {
529 this->logger->log(this->logger, CONTROL|MORE, "Going to create transform objects for proposal");
530
531 this->logger->log(this->logger, CONTROL|MORE, "Encryption algorithm: %s with keylength %d",mapping_find(encryption_algorithm_m,proposal->encryption_algorithm),proposal->encryption_algorithm_key_length);
532 this->logger->log(this->logger, CONTROL|MORE, "integrity algorithm: %s with keylength %d",mapping_find(integrity_algorithm_m,proposal->integrity_algorithm),proposal->integrity_algorithm_key_length);
533 this->logger->log(this->logger, CONTROL|MORE, "prf: %s with keylength %d",mapping_find(pseudo_random_function_m,proposal->pseudo_random_function),proposal->pseudo_random_function_key_length);
534
535 if (this->prf != NULL)
536 {
537 this->prf->destroy(this->prf);
538 }
539 this->prf = prf_create(proposal->pseudo_random_function);
540 if (this->prf == NULL)
541 {
542 this->logger->log(this->logger, ERROR|MORE, "prf not supported!");
543 return FAILED;
544 }
545
546 if (this->crypter_initiator != NULL)
547 {
548 this->crypter_initiator->destroy(this->crypter_initiator);
549 }
550 this->crypter_initiator = crypter_create(proposal->encryption_algorithm,proposal->encryption_algorithm_key_length);
551 if (this->crypter_initiator == NULL)
552 {
553 this->logger->log(this->logger, ERROR|MORE, "encryption algorithm not supported!");
554 return FAILED;
555 }
556
557 if (this->crypter_responder != NULL)
558 {
559 this->crypter_responder->destroy(this->crypter_responder);
560 }
561 this->crypter_responder = crypter_create(proposal->encryption_algorithm,proposal->encryption_algorithm_key_length);
562 if (this->crypter_responder == NULL)
563 {
564 this->logger->log(this->logger, ERROR|MORE, "encryption algorithm not supported!");
565 return FAILED;
566 }
567
568 if (this->signer_initiator != NULL)
569 {
570 this->signer_initiator->destroy(this->signer_initiator);
571 }
572 this->signer_initiator = signer_create(proposal->integrity_algorithm);
573 if (this->signer_initiator == NULL)
574 {
575 this->logger->log(this->logger, ERROR|MORE, "integrity algorithm not supported!");
576 return FAILED;
577 }
578
579 if (this->signer_responder != NULL)
580 {
581 this->signer_responder->destroy(this->signer_responder);
582 }
583 this->signer_responder = signer_create(proposal->integrity_algorithm);
584 if (this->signer_responder == NULL)
585 {
586 this->logger->log(this->logger, ERROR|MORE, "integrity algorithm not supported!");
587 return FAILED;
588 }
589
590 return SUCCESS;
591 }
592
593 /**
594 * Implementation of protected_ike_sa_t.get_randomizer.
595 */
596 static randomizer_t *get_randomizer (private_ike_sa_t *this)
597 {
598 return this->randomizer;
599 }
600
601 /**
602 * Implementation of protected_ike_sa_t.get_crypter_initiator.
603 */
604 static crypter_t *get_crypter_initiator (private_ike_sa_t *this)
605 {
606 return this->crypter_initiator;
607 }
608
609 /**
610 * Implementation of protected_ike_sa_t.get_signer_initiator.
611 */
612 static signer_t *get_signer_initiator (private_ike_sa_t *this)
613 {
614 return this->signer_initiator;
615 }
616
617 /**
618 * Implementation of protected_ike_sa_t.set_last_requested_message.
619 */
620 static status_t set_last_requested_message (private_ike_sa_t *this,message_t * message)
621 {
622 if (this->last_requested_message != NULL)
623 {
624 /* destroy message */
625 this->last_requested_message->destroy(this->last_requested_message);
626 }
627
628 if (message->get_message_id(message) != this->message_id_out)
629 {
630 this->logger->log(this->logger, CONTROL|MOST, "last requested message could not be set cause id was not as expected");
631 return FAILED;
632 }
633 this->logger->log(this->logger, CONTROL|MOST, "replace last requested message with new one");
634 this->last_requested_message = message;
635
636 /* message counter can now be increased */
637 this->logger->log(this->logger, CONTROL|MOST, "Increate message counter for outgoing messages");
638 this->message_id_out++;
639 return SUCCESS;
640 }
641
642 /**
643 * Implementation of protected_ike_sa_t.set_last_responded_message.
644 */
645 static status_t set_last_responded_message (private_ike_sa_t *this,message_t * message)
646 {
647 if (this->last_responded_message != NULL)
648 {
649 /* destroy message */
650 this->last_responded_message->destroy(this->last_responded_message);
651 }
652 if (message->get_message_id(message) != this->message_id_in)
653 {
654 this->logger->log(this->logger, CONTROL|MOST, "last responded message could not be set cause id was not as expected");
655 return FAILED;
656
657 }
658 this->logger->log(this->logger, CONTROL|MOST, "replace last responded message with new one");
659 this->last_responded_message = message;
660
661 /* message counter can now be increased */
662 this->logger->log(this->logger, CONTROL|MOST, "Increate message counter for incoming messages");
663 this->message_id_in++;
664
665 return SUCCESS;
666 }
667
668 /**
669 * Implementation of protected_ike_sa_t.destroy.
670 */
671 static void reset_message_buffers (private_ike_sa_t *this)
672 {
673 this->logger->log(this->logger, CONTROL|MOST, "Reset message counters and destroy stored messages");
674 /* destroy stored requested message */
675 if (this->last_requested_message != NULL)
676 {
677 this->last_requested_message->destroy(this->last_requested_message);
678 this->last_requested_message = NULL;
679 }
680
681 /* destroy stored responded messages */
682 if (this->last_responded_message != NULL)
683 {
684 this->last_responded_message->destroy(this->last_responded_message);
685 this->last_responded_message = NULL;
686 }
687
688 this->message_id_out = 0;
689 this->message_id_in = 0;
690 }
691
692 /**
693 * Implementation of protected_ike_sa_t.destroy.
694 */
695 static void destroy (private_ike_sa_t *this)
696 {
697 this->logger->log(this->logger, CONTROL | MORE, "Going to destroy IKE_SA");
698
699 /* destroy child sa's */
700 this->logger->log(this->logger, CONTROL | MOST, "Destroy all child_sa's");
701 while (this->child_sas->get_count(this->child_sas) > 0)
702 {
703 void *child_sa;
704 if (this->child_sas->remove_first(this->child_sas, &child_sa) != SUCCESS)
705 {
706 break;
707 }
708 /* destroy child sa */
709 }
710 this->child_sas->destroy(this->child_sas);
711
712 this->logger->log(this->logger, CONTROL | MOST, "Destroy secrets");
713
714 allocator_free(this->secrets.d_key.ptr);
715 allocator_free(this->secrets.ai_key.ptr);
716 allocator_free(this->secrets.ar_key.ptr);
717 allocator_free(this->secrets.ei_key.ptr);
718 allocator_free(this->secrets.er_key.ptr);
719 allocator_free(this->secrets.pi_key.ptr);
720 allocator_free(this->secrets.pr_key.ptr);
721
722 if (this->crypter_initiator != NULL)
723 {
724 this->crypter_initiator->destroy(this->crypter_initiator);
725 }
726
727 if (this->crypter_responder != NULL)
728 {
729 this->crypter_responder->destroy(this->crypter_responder);
730 }
731
732 if (this->signer_initiator != NULL)
733 {
734 this->signer_initiator->destroy(this->signer_initiator);
735 }
736
737 if (this->signer_responder != NULL)
738 {
739 this->signer_responder->destroy(this->signer_responder);
740 }
741
742 if (this->prf != NULL)
743 {
744 this->prf->destroy(this->prf);
745 }
746
747 /* destroy ike_sa_id */
748 this->ike_sa_id->destroy(this->ike_sa_id);
749
750 /* destroy stored requested message */
751 if (this->last_requested_message != NULL)
752 {
753 this->last_requested_message->destroy(this->last_requested_message);
754 }
755
756 /* destroy stored host_t objects */
757 if (this->me.host != NULL)
758 {
759 this->me.host->destroy(this->me.host);
760 }
761
762 /* destroy stored host_t objects */
763 if (this->other.host != NULL)
764 {
765 this->other.host->destroy(this->other.host);
766 }
767
768
769 /* destroy stored responded messages */
770 if (this->last_responded_message != NULL)
771 {
772 this->last_responded_message->destroy(this->last_responded_message);
773 }
774
775 this->randomizer->destroy(this->randomizer);
776
777 this->logger->log(this->logger, CONTROL | MOST, "Destroy current state object");
778 this->current_state->destroy(this->current_state);
779
780 this->logger->log(this->logger, CONTROL | MOST, "Destroy logger of IKE_SA");
781 charon->logger_manager->destroy_logger(charon->logger_manager, this->logger);
782
783 allocator_free(this);
784 }
785
786 /*
787 * Described in Header
788 */
789 ike_sa_t * ike_sa_create(ike_sa_id_t *ike_sa_id)
790 {
791 private_ike_sa_t *this = allocator_alloc_thing(private_ike_sa_t);
792
793 /* Public functions */
794 this->protected.public.process_message = (status_t(*)(ike_sa_t*, message_t*)) process_message;
795 this->protected.public.initialize_connection = (status_t(*)(ike_sa_t*, char*)) initialize_connection;
796 this->protected.public.get_id = (ike_sa_id_t*(*)(ike_sa_t*)) get_id;
797 this->protected.public.destroy = (void(*)(ike_sa_t*))destroy;
798
799 /* protected functions */
800 this->protected.build_message = (void (*) (protected_ike_sa_t *, exchange_type_t , bool , message_t **)) build_message;
801 this->protected.compute_secrets = (void (*) (protected_ike_sa_t *,chunk_t ,chunk_t , chunk_t )) compute_secrets;
802 this->protected.get_logger = (logger_t *(*) (protected_ike_sa_t *)) get_logger;
803 this->protected.set_init_config = (void (*) (protected_ike_sa_t *,init_config_t *)) set_init_config;
804 this->protected.get_init_config = (init_config_t *(*) (protected_ike_sa_t *)) get_init_config;
805 this->protected.set_sa_config = (void (*) (protected_ike_sa_t *,sa_config_t *)) set_sa_config;
806 this->protected.get_sa_config = (sa_config_t *(*) (protected_ike_sa_t *)) get_sa_config;
807 this->protected.get_my_host = (host_t *(*) (protected_ike_sa_t *)) get_my_host;
808 this->protected.get_other_host = (host_t *(*) (protected_ike_sa_t *)) get_other_host;
809 this->protected.set_my_host = (void(*) (protected_ike_sa_t *,host_t *)) set_my_host;
810 this->protected.set_other_host = (void(*) (protected_ike_sa_t *, host_t *)) set_other_host;
811 this->protected.get_randomizer = (randomizer_t *(*) (protected_ike_sa_t *)) get_randomizer;
812 this->protected.set_last_requested_message = (status_t (*) (protected_ike_sa_t *,message_t *)) set_last_requested_message;
813 this->protected.set_last_responded_message = (status_t (*) (protected_ike_sa_t *,message_t *)) set_last_responded_message;
814 this->protected.create_transforms_from_proposal = (status_t (*) (protected_ike_sa_t *,ike_proposal_t *)) create_transforms_from_proposal;
815 this->protected.set_new_state = (void (*) (protected_ike_sa_t *,state_t *)) set_new_state;
816 this->protected.get_crypter_initiator = (crypter_t *(*) (protected_ike_sa_t *)) get_crypter_initiator;
817 this->protected.get_signer_initiator = (signer_t *(*) (protected_ike_sa_t *)) get_signer_initiator;
818 this->protected.reset_message_buffers = (void (*) (protected_ike_sa_t *)) reset_message_buffers;
819
820 /* private functions */
821 this->resend_last_reply = resend_last_reply;
822 this->create_delete_job = create_delete_job;
823
824
825
826
827 /* initialize private fields */
828 this->logger = charon->logger_manager->create_logger(charon->logger_manager, IKE_SA, NULL);
829
830 this->ike_sa_id = ike_sa_id->clone(ike_sa_id);
831 this->child_sas = linked_list_create();
832 this->randomizer = randomizer_create();
833
834 this->me.host = NULL;
835 this->other.host = NULL;
836 this->last_requested_message = NULL;
837 this->last_responded_message = NULL;
838 this->message_id_out = 0;
839 this->message_id_in = 0;
840 this->secrets.d_key = CHUNK_INITIALIZER;
841 this->secrets.ai_key = CHUNK_INITIALIZER;
842 this->secrets.ar_key = CHUNK_INITIALIZER;
843 this->secrets.ei_key = CHUNK_INITIALIZER;
844 this->secrets.er_key = CHUNK_INITIALIZER;
845 this->secrets.pi_key = CHUNK_INITIALIZER;
846 this->secrets.pr_key = CHUNK_INITIALIZER;
847 this->crypter_initiator = NULL;
848 this->crypter_responder = NULL;
849 this->signer_initiator = NULL;
850 this->signer_responder = NULL;
851 this->prf = NULL;
852 this->init_config = NULL;
853 this->sa_config = NULL;
854
855 /* at creation time, IKE_SA is in a initiator state */
856 if (ike_sa_id->is_initiator(ike_sa_id))
857 {
858 this->current_state = (state_t *) initiator_init_create(&(this->protected));
859 }
860 else
861 {
862 this->current_state = (state_t *) responder_init_create(&(this->protected));
863 }
864 return &(this->protected.public);
865 }