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4a09d9ee MW |
1 | /* |
2 | * Copyright (C) 2007 Tobias Brunner | |
3 | * Copyright (C) 2007-2010 Martin Willi | |
4 | * Hochschule fuer Technik Rapperswil | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2 of the License, or (at your | |
9 | * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
13 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | * for more details. | |
15 | */ | |
16 | ||
17 | #include "task_manager_v1.h" | |
18 | ||
4a09d9ee | 19 | #include <daemon.h> |
c73c832c | 20 | #include <sa/tasks/main_mode.h> |
744c0801 | 21 | #include <sa/tasks/quick_mode.h> |
4a09d9ee MW |
22 | |
23 | typedef struct exchange_t exchange_t; | |
24 | ||
25 | /** | |
26 | * An exchange in the air, used do detect and handle retransmission | |
27 | */ | |
28 | struct exchange_t { | |
29 | ||
30 | /** | |
31 | * Message ID used for this transaction | |
32 | */ | |
33 | u_int32_t mid; | |
34 | ||
35 | /** | |
36 | * generated packet for retransmission | |
37 | */ | |
38 | packet_t *packet; | |
39 | }; | |
40 | ||
41 | typedef struct private_task_manager_t private_task_manager_t; | |
42 | ||
43 | /** | |
44 | * private data of the task manager | |
45 | */ | |
46 | struct private_task_manager_t { | |
47 | ||
48 | /** | |
49 | * public functions | |
50 | */ | |
51 | task_manager_v1_t public; | |
52 | ||
53 | /** | |
54 | * associated IKE_SA we are serving | |
55 | */ | |
56 | ike_sa_t *ike_sa; | |
57 | ||
73aaf76b MW |
58 | /** |
59 | * RNG to create message IDs | |
60 | */ | |
61 | rng_t *rng; | |
62 | ||
4a09d9ee MW |
63 | /** |
64 | * Exchange we are currently handling as responder | |
65 | */ | |
66 | struct { | |
67 | /** | |
68 | * Message ID of the exchange | |
69 | */ | |
70 | u_int32_t mid; | |
71 | ||
9cc8bd4f MW |
72 | /** |
73 | * Hash of a previously received message | |
74 | */ | |
75 | u_int32_t hash; | |
76 | ||
4a09d9ee MW |
77 | /** |
78 | * packet for retransmission | |
79 | */ | |
80 | packet_t *packet; | |
81 | ||
82 | } responding; | |
83 | ||
84 | /** | |
85 | * Exchange we are currently handling as initiator | |
86 | */ | |
87 | struct { | |
88 | /** | |
89 | * Message ID of the exchange | |
90 | */ | |
91 | u_int32_t mid; | |
92 | ||
9cc8bd4f MW |
93 | /** |
94 | * Hash of a previously received message | |
95 | */ | |
96 | u_int32_t hash; | |
97 | ||
4a09d9ee MW |
98 | /** |
99 | * how many times we have retransmitted so far | |
100 | */ | |
101 | u_int retransmitted; | |
102 | ||
103 | /** | |
104 | * packet for retransmission | |
105 | */ | |
106 | packet_t *packet; | |
107 | ||
108 | /** | |
109 | * type of the initated exchange | |
110 | */ | |
111 | exchange_type_t type; | |
112 | ||
113 | } initiating; | |
114 | ||
115 | /** | |
116 | * List of queued tasks not yet in action | |
117 | */ | |
118 | linked_list_t *queued_tasks; | |
119 | ||
120 | /** | |
121 | * List of active tasks, initiated by ourselve | |
122 | */ | |
123 | linked_list_t *active_tasks; | |
124 | ||
125 | /** | |
126 | * List of tasks initiated by peer | |
127 | */ | |
128 | linked_list_t *passive_tasks; | |
129 | ||
4a09d9ee MW |
130 | /** |
131 | * Number of times we retransmit messages before giving up | |
132 | */ | |
133 | u_int retransmit_tries; | |
134 | ||
135 | /** | |
136 | * Retransmission timeout | |
137 | */ | |
138 | double retransmit_timeout; | |
139 | ||
140 | /** | |
141 | * Base to calculate retransmission timeout | |
142 | */ | |
143 | double retransmit_base; | |
144 | }; | |
145 | ||
146 | /** | |
147 | * flush all tasks in the task manager | |
148 | */ | |
149 | static void flush(private_task_manager_t *this) | |
150 | { | |
151 | this->queued_tasks->destroy_offset(this->queued_tasks, | |
152 | offsetof(task_t, destroy)); | |
153 | this->queued_tasks = linked_list_create(); | |
154 | this->passive_tasks->destroy_offset(this->passive_tasks, | |
155 | offsetof(task_t, destroy)); | |
156 | this->passive_tasks = linked_list_create(); | |
157 | this->active_tasks->destroy_offset(this->active_tasks, | |
158 | offsetof(task_t, destroy)); | |
159 | this->active_tasks = linked_list_create(); | |
160 | } | |
161 | ||
26b55dc6 MW |
162 | /** |
163 | * move a task of a specific type from the queue to the active list | |
164 | */ | |
165 | static bool activate_task(private_task_manager_t *this, task_type_t type) | |
166 | { | |
167 | enumerator_t *enumerator; | |
168 | task_t *task; | |
169 | bool found = FALSE; | |
170 | ||
171 | enumerator = this->queued_tasks->create_enumerator(this->queued_tasks); | |
172 | while (enumerator->enumerate(enumerator, (void**)&task)) | |
173 | { | |
174 | if (task->get_type(task) == type) | |
175 | { | |
176 | DBG2(DBG_IKE, " activating %N task", task_type_names, type); | |
177 | this->queued_tasks->remove_at(this->queued_tasks, enumerator); | |
178 | this->active_tasks->insert_last(this->active_tasks, task); | |
179 | found = TRUE; | |
180 | break; | |
181 | } | |
182 | } | |
183 | enumerator->destroy(enumerator); | |
184 | return found; | |
185 | } | |
186 | ||
23f4e4b4 CO |
187 | METHOD(task_manager_t, retransmit, status_t, |
188 | private_task_manager_t *this, u_int32_t message_id) | |
189 | { | |
190 | if (message_id == this->initiating.mid) | |
191 | { | |
192 | u_int32_t timeout; | |
193 | job_t *job; | |
194 | enumerator_t *enumerator; | |
195 | packet_t *packet; | |
196 | task_t *task; | |
197 | ||
198 | if (this->initiating.retransmitted <= this->retransmit_tries) | |
199 | { | |
200 | timeout = (u_int32_t)(this->retransmit_timeout * 1000.0 * | |
201 | pow(this->retransmit_base, this->initiating.retransmitted)); | |
202 | } | |
203 | else | |
204 | { | |
205 | DBG1(DBG_IKE, "giving up after %d retransmits", | |
206 | this->initiating.retransmitted - 1); | |
207 | if (this->ike_sa->get_state(this->ike_sa) != IKE_CONNECTING) | |
208 | { | |
209 | charon->bus->ike_updown(charon->bus, this->ike_sa, FALSE); | |
210 | } | |
211 | return DESTROY_ME; | |
212 | } | |
213 | ||
214 | if (this->initiating.retransmitted) | |
215 | { | |
216 | DBG1(DBG_IKE, "retransmit %d of request with message ID %d", | |
217 | this->initiating.retransmitted, message_id); | |
218 | } | |
219 | packet = this->initiating.packet->clone(this->initiating.packet); | |
220 | charon->sender->send(charon->sender, packet); | |
221 | ||
222 | this->initiating.retransmitted++; | |
223 | job = (job_t*)retransmit_job_create(this->initiating.mid, | |
224 | this->ike_sa->get_id(this->ike_sa)); | |
225 | lib->scheduler->schedule_job_ms(lib->scheduler, job, timeout); | |
226 | } | |
227 | return SUCCESS; | |
228 | } | |
229 | ||
4a09d9ee MW |
230 | METHOD(task_manager_t, initiate, status_t, |
231 | private_task_manager_t *this) | |
232 | { | |
26b55dc6 MW |
233 | enumerator_t *enumerator; |
234 | task_t *task; | |
235 | message_t *message; | |
236 | host_t *me, *other; | |
237 | status_t status; | |
73aaf76b MW |
238 | exchange_type_t exchange = EXCHANGE_TYPE_UNDEFINED; |
239 | ||
240 | if (!this->rng) | |
241 | { | |
242 | DBG1(DBG_IKE, "no RNG supported"); | |
243 | return FAILED; | |
244 | } | |
26b55dc6 MW |
245 | |
246 | if (this->initiating.type != EXCHANGE_TYPE_UNDEFINED) | |
247 | { | |
248 | DBG2(DBG_IKE, "delaying task initiation, %N exchange in progress", | |
249 | exchange_type_names, this->initiating.type); | |
250 | /* do not initiate if we already have a message in the air */ | |
251 | return SUCCESS; | |
252 | } | |
253 | ||
254 | if (this->active_tasks->get_count(this->active_tasks) == 0) | |
255 | { | |
256 | DBG2(DBG_IKE, "activating new tasks"); | |
257 | switch (this->ike_sa->get_state(this->ike_sa)) | |
258 | { | |
259 | case IKE_CREATED: | |
a09972df | 260 | if (activate_task(this, TASK_MAIN_MODE)) |
26b55dc6 MW |
261 | { |
262 | exchange = ID_PROT; | |
263 | } | |
264 | break; | |
744c0801 MW |
265 | case IKE_ESTABLISHED: |
266 | if (activate_task(this, TASK_QUICK_MODE)) | |
267 | { | |
268 | exchange = QUICK_MODE; | |
269 | } | |
23f4e4b4 CO |
270 | |
271 | if (activate_task(this, TASK_XAUTH_REQUEST)) | |
272 | { | |
273 | exchange = TRANSACTION; | |
274 | } | |
744c0801 | 275 | break; |
26b55dc6 MW |
276 | default: |
277 | break; | |
278 | } | |
279 | } | |
280 | else | |
281 | { | |
282 | DBG2(DBG_IKE, "reinitiating already active tasks"); | |
283 | enumerator = this->active_tasks->create_enumerator(this->active_tasks); | |
284 | while (enumerator->enumerate(enumerator, (void**)&task)) | |
285 | { | |
286 | DBG2(DBG_IKE, " %N task", task_type_names, task->get_type(task)); | |
287 | switch (task->get_type(task)) | |
288 | { | |
a09972df | 289 | case TASK_MAIN_MODE: |
26b55dc6 MW |
290 | exchange = ID_PROT; |
291 | break; | |
744c0801 MW |
292 | case TASK_QUICK_MODE: |
293 | exchange = QUICK_MODE; | |
294 | break; | |
26b55dc6 MW |
295 | default: |
296 | continue; | |
297 | } | |
298 | break; | |
299 | } | |
300 | enumerator->destroy(enumerator); | |
301 | } | |
302 | ||
73aaf76b | 303 | if (exchange == EXCHANGE_TYPE_UNDEFINED) |
26b55dc6 MW |
304 | { |
305 | DBG2(DBG_IKE, "nothing to initiate"); | |
306 | /* nothing to do yet... */ | |
307 | return SUCCESS; | |
308 | } | |
309 | ||
310 | me = this->ike_sa->get_my_host(this->ike_sa); | |
311 | other = this->ike_sa->get_other_host(this->ike_sa); | |
312 | ||
313 | message = message_create(IKEV1_MAJOR_VERSION, IKEV1_MINOR_VERSION); | |
314 | if (exchange != ID_PROT) | |
315 | { | |
73aaf76b MW |
316 | this->rng->get_bytes(this->rng, sizeof(this->initiating.mid), |
317 | (void*)&this->initiating.mid); | |
318 | message->set_message_id(message, this->initiating.mid); | |
26b55dc6 MW |
319 | } |
320 | message->set_source(message, me->clone(me)); | |
321 | message->set_destination(message, other->clone(other)); | |
322 | message->set_exchange_type(message, exchange); | |
323 | this->initiating.type = exchange; | |
324 | this->initiating.retransmitted = 0; | |
325 | ||
326 | enumerator = this->active_tasks->create_enumerator(this->active_tasks); | |
327 | while (enumerator->enumerate(enumerator, (void*)&task)) | |
328 | { | |
329 | switch (task->build(task, message)) | |
330 | { | |
331 | case SUCCESS: | |
332 | /* task completed, remove it */ | |
333 | this->active_tasks->remove_at(this->active_tasks, enumerator); | |
334 | task->destroy(task); | |
335 | break; | |
336 | case NEED_MORE: | |
337 | /* processed, but task needs another exchange */ | |
338 | break; | |
339 | case FAILED: | |
340 | default: | |
341 | if (this->ike_sa->get_state(this->ike_sa) != IKE_CONNECTING) | |
342 | { | |
343 | charon->bus->ike_updown(charon->bus, this->ike_sa, FALSE); | |
344 | } | |
345 | /* FALL */ | |
346 | case DESTROY_ME: | |
347 | /* critical failure, destroy IKE_SA */ | |
348 | enumerator->destroy(enumerator); | |
349 | message->destroy(message); | |
350 | flush(this); | |
351 | return DESTROY_ME; | |
352 | } | |
353 | } | |
354 | enumerator->destroy(enumerator); | |
355 | ||
356 | /* update exchange type if a task changed it */ | |
357 | this->initiating.type = message->get_exchange_type(message); | |
358 | ||
359 | status = this->ike_sa->generate_message(this->ike_sa, message, | |
360 | &this->initiating.packet); | |
361 | if (status != SUCCESS) | |
362 | { | |
363 | /* message generation failed. There is nothing more to do than to | |
364 | * close the SA */ | |
365 | message->destroy(message); | |
366 | flush(this); | |
367 | charon->bus->ike_updown(charon->bus, this->ike_sa, FALSE); | |
368 | return DESTROY_ME; | |
369 | } | |
370 | message->destroy(message); | |
371 | ||
372 | charon->sender->send(charon->sender, | |
373 | this->initiating.packet->clone(this->initiating.packet)); | |
374 | ||
375 | return SUCCESS; | |
4a09d9ee MW |
376 | } |
377 | ||
378 | /** | |
379 | * handle exchange collisions | |
380 | */ | |
381 | static bool handle_collisions(private_task_manager_t *this, task_t *task) | |
382 | { | |
383 | return FALSE; | |
384 | } | |
385 | ||
386 | /** | |
387 | * build a response depending on the "passive" task list | |
388 | */ | |
389 | static status_t build_response(private_task_manager_t *this, message_t *request) | |
390 | { | |
391 | enumerator_t *enumerator; | |
392 | task_t *task; | |
393 | message_t *message; | |
394 | host_t *me, *other; | |
395 | bool delete = FALSE; | |
396 | status_t status; | |
397 | ||
398 | me = request->get_destination(request); | |
399 | other = request->get_source(request); | |
400 | ||
401 | message = message_create(IKEV1_MAJOR_VERSION, IKEV1_MINOR_VERSION); | |
402 | message->set_exchange_type(message, request->get_exchange_type(request)); | |
403 | /* send response along the path the request came in */ | |
404 | message->set_source(message, me->clone(me)); | |
405 | message->set_destination(message, other->clone(other)); | |
73aaf76b | 406 | message->set_message_id(message, request->get_message_id(request)); |
4a09d9ee MW |
407 | message->set_request(message, FALSE); |
408 | ||
409 | enumerator = this->passive_tasks->create_enumerator(this->passive_tasks); | |
410 | while (enumerator->enumerate(enumerator, (void*)&task)) | |
411 | { | |
412 | switch (task->build(task, message)) | |
413 | { | |
414 | case SUCCESS: | |
415 | /* task completed, remove it */ | |
416 | this->passive_tasks->remove_at(this->passive_tasks, enumerator); | |
417 | if (!handle_collisions(this, task)) | |
418 | { | |
419 | task->destroy(task); | |
420 | } | |
421 | break; | |
422 | case NEED_MORE: | |
423 | /* processed, but task needs another exchange */ | |
424 | if (handle_collisions(this, task)) | |
425 | { | |
426 | this->passive_tasks->remove_at(this->passive_tasks, | |
427 | enumerator); | |
428 | } | |
429 | break; | |
430 | case FAILED: | |
431 | default: | |
432 | charon->bus->ike_updown(charon->bus, this->ike_sa, FALSE); | |
433 | /* FALL */ | |
434 | case DESTROY_ME: | |
435 | /* destroy IKE_SA, but SEND response first */ | |
436 | delete = TRUE; | |
437 | break; | |
438 | } | |
439 | if (delete) | |
440 | { | |
441 | break; | |
442 | } | |
443 | } | |
444 | enumerator->destroy(enumerator); | |
445 | ||
446 | /* message complete, send it */ | |
447 | DESTROY_IF(this->responding.packet); | |
448 | this->responding.packet = NULL; | |
449 | status = this->ike_sa->generate_message(this->ike_sa, message, | |
450 | &this->responding.packet); | |
451 | message->destroy(message); | |
452 | if (status != SUCCESS) | |
453 | { | |
454 | charon->bus->ike_updown(charon->bus, this->ike_sa, FALSE); | |
455 | return DESTROY_ME; | |
456 | } | |
457 | ||
458 | charon->sender->send(charon->sender, | |
459 | this->responding.packet->clone(this->responding.packet)); | |
460 | if (delete) | |
461 | { | |
462 | return DESTROY_ME; | |
463 | } | |
464 | return SUCCESS; | |
465 | } | |
466 | ||
467 | /** | |
468 | * handle an incoming request message | |
469 | */ | |
470 | static status_t process_request(private_task_manager_t *this, | |
471 | message_t *message) | |
472 | { | |
473 | enumerator_t *enumerator; | |
474 | task_t *task = NULL; | |
475 | ||
476 | if (this->passive_tasks->get_count(this->passive_tasks) == 0) | |
477 | { /* create tasks depending on request type, if not already some queued */ | |
478 | switch (message->get_exchange_type(message)) | |
479 | { | |
480 | case ID_PROT: | |
c73c832c MW |
481 | task = (task_t *)main_mode_create(this->ike_sa, FALSE); |
482 | this->passive_tasks->insert_last(this->passive_tasks, task); | |
4a09d9ee MW |
483 | break; |
484 | case AGGRESSIVE: | |
485 | /* TODO-IKEv1: agressive mode */ | |
486 | return FAILED; | |
487 | case QUICK_MODE: | |
744c0801 MW |
488 | task = (task_t *)quick_mode_create(this->ike_sa, NULL, |
489 | NULL, NULL); | |
490 | this->passive_tasks->insert_last(this->passive_tasks, task); | |
491 | break; | |
4a09d9ee MW |
492 | case INFORMATIONAL_V1: |
493 | /* TODO-IKEv1: informational */ | |
494 | return FAILED; | |
495 | default: | |
496 | return FAILED; | |
497 | } | |
498 | } | |
499 | /* let the tasks process the message */ | |
500 | enumerator = this->passive_tasks->create_enumerator(this->passive_tasks); | |
501 | while (enumerator->enumerate(enumerator, (void*)&task)) | |
502 | { | |
503 | switch (task->process(task, message)) | |
504 | { | |
505 | case SUCCESS: | |
506 | /* task completed, remove it */ | |
507 | this->passive_tasks->remove_at(this->passive_tasks, enumerator); | |
508 | task->destroy(task); | |
21b7db99 MW |
509 | enumerator->destroy(enumerator); |
510 | return SUCCESS; | |
4a09d9ee MW |
511 | case NEED_MORE: |
512 | /* processed, but task needs at least another call to build() */ | |
513 | break; | |
514 | case FAILED: | |
515 | default: | |
516 | charon->bus->ike_updown(charon->bus, this->ike_sa, FALSE); | |
517 | /* FALL */ | |
518 | case DESTROY_ME: | |
519 | /* critical failure, destroy IKE_SA */ | |
520 | this->passive_tasks->remove_at(this->passive_tasks, enumerator); | |
521 | enumerator->destroy(enumerator); | |
522 | task->destroy(task); | |
523 | return DESTROY_ME; | |
524 | } | |
525 | } | |
526 | enumerator->destroy(enumerator); | |
527 | ||
528 | return build_response(this, message); | |
529 | } | |
530 | ||
26b55dc6 MW |
531 | /** |
532 | * handle an incoming response message | |
533 | */ | |
534 | static status_t process_response(private_task_manager_t *this, | |
535 | message_t *message) | |
536 | { | |
537 | enumerator_t *enumerator; | |
538 | task_t *task; | |
539 | ||
540 | if (message->get_exchange_type(message) != this->initiating.type) | |
541 | { | |
542 | DBG1(DBG_IKE, "received %N response, but expected %N", | |
543 | exchange_type_names, message->get_exchange_type(message), | |
544 | exchange_type_names, this->initiating.type); | |
545 | charon->bus->ike_updown(charon->bus, this->ike_sa, FALSE); | |
546 | return DESTROY_ME; | |
547 | } | |
548 | ||
549 | enumerator = this->active_tasks->create_enumerator(this->active_tasks); | |
550 | while (enumerator->enumerate(enumerator, (void*)&task)) | |
551 | { | |
552 | switch (task->process(task, message)) | |
553 | { | |
554 | case SUCCESS: | |
555 | /* task completed, remove it */ | |
556 | this->active_tasks->remove_at(this->active_tasks, enumerator); | |
557 | task->destroy(task); | |
558 | break; | |
559 | case NEED_MORE: | |
560 | /* processed, but task needs another exchange */ | |
561 | break; | |
562 | case FAILED: | |
563 | default: | |
564 | charon->bus->ike_updown(charon->bus, this->ike_sa, FALSE); | |
565 | /* FALL */ | |
566 | case DESTROY_ME: | |
567 | /* critical failure, destroy IKE_SA */ | |
568 | this->active_tasks->remove_at(this->active_tasks, enumerator); | |
569 | enumerator->destroy(enumerator); | |
570 | task->destroy(task); | |
571 | return DESTROY_ME; | |
572 | } | |
573 | } | |
574 | enumerator->destroy(enumerator); | |
575 | ||
576 | this->initiating.type = EXCHANGE_TYPE_UNDEFINED; | |
577 | this->initiating.packet->destroy(this->initiating.packet); | |
578 | this->initiating.packet = NULL; | |
579 | ||
580 | return initiate(this); | |
581 | } | |
582 | ||
4a09d9ee MW |
583 | METHOD(task_manager_t, process_message, status_t, |
584 | private_task_manager_t *this, message_t *msg) | |
585 | { | |
73aaf76b | 586 | u_int32_t hash, mid; |
3d59c5c3 | 587 | host_t *me, *other; |
73aaf76b MW |
588 | |
589 | mid = msg->get_message_id(msg); | |
73aaf76b | 590 | |
3d59c5c3 TB |
591 | /* TODO-IKEv1: update hosts more selectively */ |
592 | me = msg->get_destination(msg); | |
593 | other = msg->get_source(msg); | |
594 | ||
73aaf76b MW |
595 | if ((mid && mid == this->initiating.mid) || |
596 | (this->initiating.mid == 0 && | |
597 | this->active_tasks->get_count(this->active_tasks))) | |
4a09d9ee | 598 | { |
3d59c5c3 | 599 | this->ike_sa->update_hosts(this->ike_sa, me, other, TRUE); |
73aaf76b MW |
600 | charon->bus->message(charon->bus, msg, FALSE); |
601 | if (process_response(this, msg) != SUCCESS) | |
4a09d9ee MW |
602 | { |
603 | flush(this); | |
604 | return DESTROY_ME; | |
605 | } | |
606 | } | |
607 | else | |
608 | { | |
9cc8bd4f MW |
609 | hash = chunk_hash(msg->get_packet_data(msg)); |
610 | if (hash == this->responding.hash) | |
73aaf76b MW |
611 | { |
612 | DBG1(DBG_IKE, "received retransmit of request with ID %d, " | |
613 | "retransmitting response", mid); | |
614 | charon->sender->send(charon->sender, | |
615 | this->responding.packet->clone(this->responding.packet)); | |
616 | return SUCCESS; | |
617 | } | |
3d59c5c3 | 618 | this->ike_sa->update_hosts(this->ike_sa, me, other, TRUE); |
73aaf76b MW |
619 | charon->bus->message(charon->bus, msg, TRUE); |
620 | if (process_request(this, msg) != SUCCESS) | |
26b55dc6 MW |
621 | { |
622 | flush(this); | |
623 | return DESTROY_ME; | |
624 | } | |
73aaf76b | 625 | |
73aaf76b | 626 | this->responding.mid = mid; |
9cc8bd4f | 627 | this->responding.hash = hash; |
4a09d9ee MW |
628 | } |
629 | return SUCCESS; | |
630 | } | |
631 | ||
632 | METHOD(task_manager_t, queue_task, void, | |
633 | private_task_manager_t *this, task_t *task) | |
634 | { | |
635 | DBG2(DBG_IKE, "queueing %N task", task_type_names, task->get_type(task)); | |
636 | this->queued_tasks->insert_last(this->queued_tasks, task); | |
637 | } | |
638 | ||
639 | METHOD(task_manager_t, adopt_tasks, void, | |
640 | private_task_manager_t *this, task_manager_t *other_public) | |
641 | { | |
642 | private_task_manager_t *other = (private_task_manager_t*)other_public; | |
643 | task_t *task; | |
644 | ||
645 | /* move queued tasks from other to this */ | |
646 | while (other->queued_tasks->remove_last(other->queued_tasks, | |
647 | (void**)&task) == SUCCESS) | |
648 | { | |
649 | DBG2(DBG_IKE, "migrating %N task", task_type_names, task->get_type(task)); | |
650 | task->migrate(task, this->ike_sa); | |
651 | this->queued_tasks->insert_first(this->queued_tasks, task); | |
652 | } | |
653 | } | |
654 | ||
655 | METHOD(task_manager_t, busy, bool, | |
656 | private_task_manager_t *this) | |
657 | { | |
658 | return (this->active_tasks->get_count(this->active_tasks) > 0); | |
659 | } | |
660 | ||
661 | METHOD(task_manager_t, incr_mid, void, | |
662 | private_task_manager_t *this, bool initiate) | |
663 | { | |
4a09d9ee MW |
664 | } |
665 | ||
666 | METHOD(task_manager_t, reset, void, | |
667 | private_task_manager_t *this, u_int32_t initiate, u_int32_t respond) | |
668 | { | |
4a09d9ee MW |
669 | } |
670 | ||
671 | METHOD(task_manager_t, create_task_enumerator, enumerator_t*, | |
672 | private_task_manager_t *this, task_queue_t queue) | |
673 | { | |
674 | switch (queue) | |
675 | { | |
676 | case TASK_QUEUE_ACTIVE: | |
677 | return this->active_tasks->create_enumerator(this->active_tasks); | |
678 | case TASK_QUEUE_PASSIVE: | |
679 | return this->passive_tasks->create_enumerator(this->passive_tasks); | |
680 | case TASK_QUEUE_QUEUED: | |
681 | return this->queued_tasks->create_enumerator(this->queued_tasks); | |
682 | default: | |
683 | return enumerator_create_empty(); | |
684 | } | |
685 | } | |
686 | ||
687 | METHOD(task_manager_t, destroy, void, | |
688 | private_task_manager_t *this) | |
689 | { | |
690 | flush(this); | |
691 | ||
692 | this->active_tasks->destroy(this->active_tasks); | |
693 | this->queued_tasks->destroy(this->queued_tasks); | |
694 | this->passive_tasks->destroy(this->passive_tasks); | |
695 | ||
696 | DESTROY_IF(this->responding.packet); | |
697 | DESTROY_IF(this->initiating.packet); | |
73aaf76b | 698 | DESTROY_IF(this->rng); |
4a09d9ee MW |
699 | free(this); |
700 | } | |
701 | ||
702 | /* | |
703 | * see header file | |
704 | */ | |
705 | task_manager_v1_t *task_manager_v1_create(ike_sa_t *ike_sa) | |
706 | { | |
707 | private_task_manager_t *this; | |
708 | ||
709 | INIT(this, | |
710 | .public = { | |
711 | .task_manager = { | |
712 | .process_message = _process_message, | |
713 | .queue_task = _queue_task, | |
714 | .initiate = _initiate, | |
715 | .retransmit = _retransmit, | |
716 | .incr_mid = _incr_mid, | |
717 | .reset = _reset, | |
718 | .adopt_tasks = _adopt_tasks, | |
719 | .busy = _busy, | |
720 | .create_task_enumerator = _create_task_enumerator, | |
721 | .destroy = _destroy, | |
722 | }, | |
723 | }, | |
724 | .ike_sa = ike_sa, | |
725 | .initiating.type = EXCHANGE_TYPE_UNDEFINED, | |
73aaf76b | 726 | .rng = lib->crypto->create_rng(lib->crypto, RNG_WEAK), |
4a09d9ee MW |
727 | .queued_tasks = linked_list_create(), |
728 | .active_tasks = linked_list_create(), | |
729 | .passive_tasks = linked_list_create(), | |
730 | .retransmit_tries = lib->settings->get_int(lib->settings, | |
731 | "charon.retransmit_tries", RETRANSMIT_TRIES), | |
732 | .retransmit_timeout = lib->settings->get_double(lib->settings, | |
733 | "charon.retransmit_timeout", RETRANSMIT_TIMEOUT), | |
734 | .retransmit_base = lib->settings->get_double(lib->settings, | |
735 | "charon.retransmit_base", RETRANSMIT_BASE), | |
736 | ); | |
737 | ||
738 | return &this->public; | |
739 | } |