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4a09d9ee | 1 | /* |
1b4e7fe1 | 2 | * Copyright (C) 2007-2016 Tobias Brunner |
68c6863b | 3 | * Copyright (C) 2007-2011 Martin Willi |
208678e6 | 4 | * HSR Hochschule fuer Technik Rapperswil |
4a09d9ee MW |
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 | ||
da063ec9 MW |
19 | #include <math.h> |
20 | ||
4a09d9ee | 21 | #include <daemon.h> |
15a682f4 | 22 | #include <sa/ikev1/tasks/main_mode.h> |
830ab2ae | 23 | #include <sa/ikev1/tasks/aggressive_mode.h> |
15a682f4 | 24 | #include <sa/ikev1/tasks/quick_mode.h> |
83c5fda0 | 25 | #include <sa/ikev1/tasks/quick_delete.h> |
15a682f4 MW |
26 | #include <sa/ikev1/tasks/xauth.h> |
27 | #include <sa/ikev1/tasks/mode_config.h> | |
28 | #include <sa/ikev1/tasks/informational.h> | |
29 | #include <sa/ikev1/tasks/isakmp_natd.h> | |
30 | #include <sa/ikev1/tasks/isakmp_vendor.h> | |
31 | #include <sa/ikev1/tasks/isakmp_cert_pre.h> | |
32 | #include <sa/ikev1/tasks/isakmp_cert_post.h> | |
3ed148b3 | 33 | #include <sa/ikev1/tasks/isakmp_delete.h> |
3e6b7403 CO |
34 | #include <sa/ikev1/tasks/isakmp_dpd.h> |
35 | ||
da063ec9 | 36 | #include <processing/jobs/retransmit_job.h> |
68c6863b | 37 | #include <processing/jobs/delete_ike_sa_job.h> |
4b38c22c | 38 | #include <processing/jobs/dpd_timeout_job.h> |
30216000 TB |
39 | #include <processing/jobs/process_message_job.h> |
40 | ||
127a98dc | 41 | #include <collections/array.h> |
4a09d9ee | 42 | |
fce566a8 MW |
43 | /** |
44 | * Number of old messages hashes we keep for retransmission. | |
45 | * | |
46 | * In Main Mode, we must ignore messages from a previous message pair if | |
47 | * we already continued to the next. Otherwise a late retransmission | |
48 | * could be considered as a reply to the newer request. | |
49 | */ | |
50 | #define MAX_OLD_HASHES 2 | |
51 | ||
f5a84055 MW |
52 | /** |
53 | * First sequence number of responding packets. | |
54 | * | |
55 | * To distinguish retransmission jobs for initiating and responding packets, | |
56 | * we split up the sequence counter and use the upper half for responding. | |
57 | */ | |
58 | #define RESPONDING_SEQ INT_MAX | |
59 | ||
4a09d9ee MW |
60 | typedef struct exchange_t exchange_t; |
61 | ||
62 | /** | |
63 | * An exchange in the air, used do detect and handle retransmission | |
64 | */ | |
65 | struct exchange_t { | |
66 | ||
67 | /** | |
68 | * Message ID used for this transaction | |
69 | */ | |
b12c53ce | 70 | uint32_t mid; |
4a09d9ee MW |
71 | |
72 | /** | |
73 | * generated packet for retransmission | |
74 | */ | |
75 | packet_t *packet; | |
76 | }; | |
77 | ||
78 | typedef struct private_task_manager_t private_task_manager_t; | |
79 | ||
80 | /** | |
81 | * private data of the task manager | |
82 | */ | |
83 | struct private_task_manager_t { | |
84 | ||
85 | /** | |
86 | * public functions | |
87 | */ | |
88 | task_manager_v1_t public; | |
89 | ||
90 | /** | |
91 | * associated IKE_SA we are serving | |
92 | */ | |
93 | ike_sa_t *ike_sa; | |
94 | ||
73aaf76b MW |
95 | /** |
96 | * RNG to create message IDs | |
97 | */ | |
98 | rng_t *rng; | |
99 | ||
4a09d9ee MW |
100 | /** |
101 | * Exchange we are currently handling as responder | |
102 | */ | |
103 | struct { | |
f5a84055 MW |
104 | /** |
105 | * Message ID of the last response | |
106 | */ | |
b12c53ce | 107 | uint32_t mid; |
f5a84055 | 108 | |
9cc8bd4f MW |
109 | /** |
110 | * Hash of a previously received message | |
111 | */ | |
b12c53ce | 112 | uint32_t hash; |
9cc8bd4f | 113 | |
4a09d9ee | 114 | /** |
127a98dc | 115 | * packet(s) for retransmission |
4a09d9ee | 116 | */ |
127a98dc | 117 | array_t *packets; |
4a09d9ee | 118 | |
f5a84055 MW |
119 | /** |
120 | * Sequence number of the last sent message | |
121 | */ | |
b12c53ce | 122 | uint32_t seqnr; |
f5a84055 MW |
123 | |
124 | /** | |
125 | * how many times we have retransmitted so far | |
126 | */ | |
127 | u_int retransmitted; | |
128 | ||
4a09d9ee MW |
129 | } responding; |
130 | ||
131 | /** | |
132 | * Exchange we are currently handling as initiator | |
133 | */ | |
134 | struct { | |
135 | /** | |
136 | * Message ID of the exchange | |
137 | */ | |
b12c53ce | 138 | uint32_t mid; |
4a09d9ee | 139 | |
fce566a8 MW |
140 | /** |
141 | * Hashes of old responses we can ignore | |
142 | */ | |
b12c53ce | 143 | uint32_t old_hashes[MAX_OLD_HASHES]; |
fce566a8 MW |
144 | |
145 | /** | |
146 | * Position in old hash array | |
147 | */ | |
148 | int old_hash_pos; | |
149 | ||
9cc8bd4f | 150 | /** |
751bd02e | 151 | * Sequence number of the last sent message |
9cc8bd4f | 152 | */ |
b12c53ce | 153 | uint32_t seqnr; |
9cc8bd4f | 154 | |
4a09d9ee MW |
155 | /** |
156 | * how many times we have retransmitted so far | |
157 | */ | |
158 | u_int retransmitted; | |
159 | ||
160 | /** | |
127a98dc | 161 | * packet(s) for retransmission |
4a09d9ee | 162 | */ |
127a98dc | 163 | array_t *packets; |
4a09d9ee MW |
164 | |
165 | /** | |
30216000 | 166 | * type of the initiated exchange |
4a09d9ee MW |
167 | */ |
168 | exchange_type_t type; | |
169 | ||
170 | } initiating; | |
171 | ||
30216000 | 172 | /** |
70e0be07 | 173 | * Message we are currently defragmenting, if any (only one at a time) |
30216000 | 174 | */ |
70e0be07 | 175 | message_t *defrag; |
30216000 | 176 | |
4a09d9ee MW |
177 | /** |
178 | * List of queued tasks not yet in action | |
179 | */ | |
180 | linked_list_t *queued_tasks; | |
181 | ||
182 | /** | |
30216000 | 183 | * List of active tasks, initiated by ourselves |
4a09d9ee MW |
184 | */ |
185 | linked_list_t *active_tasks; | |
186 | ||
187 | /** | |
188 | * List of tasks initiated by peer | |
189 | */ | |
190 | linked_list_t *passive_tasks; | |
191 | ||
f91b6ac7 MW |
192 | /** |
193 | * Queued messages not yet ready to process | |
194 | */ | |
195 | message_t *queued; | |
196 | ||
4a09d9ee MW |
197 | /** |
198 | * Number of times we retransmit messages before giving up | |
199 | */ | |
200 | u_int retransmit_tries; | |
201 | ||
202 | /** | |
203 | * Retransmission timeout | |
204 | */ | |
205 | double retransmit_timeout; | |
206 | ||
207 | /** | |
208 | * Base to calculate retransmission timeout | |
209 | */ | |
210 | double retransmit_base; | |
3e6b7403 | 211 | |
389e4b8e TB |
212 | /** |
213 | * Jitter to apply to calculated retransmit timeout (in percent) | |
214 | */ | |
215 | u_int retransmit_jitter; | |
216 | ||
217 | /** | |
218 | * Limit retransmit timeout to this value | |
219 | */ | |
220 | uint32_t retransmit_limit; | |
221 | ||
3e6b7403 CO |
222 | /** |
223 | * Sequence number for sending DPD requests | |
224 | */ | |
b12c53ce | 225 | uint32_t dpd_send; |
3e6b7403 CO |
226 | |
227 | /** | |
228 | * Sequence number for received DPD requests | |
229 | */ | |
b12c53ce | 230 | uint32_t dpd_recv; |
4a09d9ee MW |
231 | }; |
232 | ||
127a98dc TB |
233 | /** |
234 | * Reset retransmission packet list | |
235 | */ | |
236 | static void clear_packets(array_t *array) | |
237 | { | |
238 | packet_t *packet; | |
239 | ||
240 | while (array_remove(array, ARRAY_TAIL, &packet)) | |
241 | { | |
242 | packet->destroy(packet); | |
243 | } | |
244 | } | |
245 | ||
a5c79960 MW |
246 | METHOD(task_manager_t, flush_queue, void, |
247 | private_task_manager_t *this, task_queue_t queue) | |
0f61964e | 248 | { |
a5c79960 | 249 | linked_list_t *list; |
0f61964e MW |
250 | task_t *task; |
251 | ||
429d95fe MW |
252 | if (this->queued) |
253 | { | |
254 | this->queued->destroy(this->queued); | |
255 | this->queued = NULL; | |
256 | } | |
a5c79960 MW |
257 | switch (queue) |
258 | { | |
259 | case TASK_QUEUE_ACTIVE: | |
260 | list = this->active_tasks; | |
17949695 MW |
261 | /* cancel pending retransmits */ |
262 | this->initiating.type = EXCHANGE_TYPE_UNDEFINED; | |
127a98dc | 263 | clear_packets(this->initiating.packets); |
a5c79960 MW |
264 | break; |
265 | case TASK_QUEUE_PASSIVE: | |
266 | list = this->passive_tasks; | |
267 | break; | |
268 | case TASK_QUEUE_QUEUED: | |
269 | list = this->queued_tasks; | |
270 | break; | |
271 | default: | |
272 | return; | |
273 | } | |
0f61964e MW |
274 | while (list->remove_last(list, (void**)&task) == SUCCESS) |
275 | { | |
276 | task->destroy(task); | |
277 | } | |
278 | } | |
279 | ||
b1908994 TE |
280 | METHOD(task_manager_t, flush, void, |
281 | private_task_manager_t *this) | |
4a09d9ee | 282 | { |
a5c79960 MW |
283 | flush_queue(this, TASK_QUEUE_QUEUED); |
284 | flush_queue(this, TASK_QUEUE_PASSIVE); | |
285 | flush_queue(this, TASK_QUEUE_ACTIVE); | |
4a09d9ee MW |
286 | } |
287 | ||
26b55dc6 MW |
288 | /** |
289 | * move a task of a specific type from the queue to the active list | |
290 | */ | |
291 | static bool activate_task(private_task_manager_t *this, task_type_t type) | |
292 | { | |
293 | enumerator_t *enumerator; | |
294 | task_t *task; | |
295 | bool found = FALSE; | |
296 | ||
297 | enumerator = this->queued_tasks->create_enumerator(this->queued_tasks); | |
298 | while (enumerator->enumerate(enumerator, (void**)&task)) | |
299 | { | |
300 | if (task->get_type(task) == type) | |
301 | { | |
302 | DBG2(DBG_IKE, " activating %N task", task_type_names, type); | |
303 | this->queued_tasks->remove_at(this->queued_tasks, enumerator); | |
304 | this->active_tasks->insert_last(this->active_tasks, task); | |
305 | found = TRUE; | |
306 | break; | |
307 | } | |
308 | } | |
309 | enumerator->destroy(enumerator); | |
310 | return found; | |
311 | } | |
312 | ||
5cafefcd | 313 | /** |
127a98dc | 314 | * Send packets in the given array (they get cloned) |
5cafefcd | 315 | */ |
127a98dc | 316 | static void send_packets(private_task_manager_t *this, array_t *packets) |
5cafefcd | 317 | { |
127a98dc | 318 | enumerator_t *enumerator; |
5cafefcd | 319 | packet_t *packet; |
5cafefcd | 320 | |
127a98dc TB |
321 | enumerator = array_create_enumerator(packets); |
322 | while (enumerator->enumerate(enumerator, &packet)) | |
5cafefcd | 323 | { |
127a98dc | 324 | charon->sender->send(charon->sender, packet->clone(packet)); |
5cafefcd | 325 | } |
127a98dc | 326 | enumerator->destroy(enumerator); |
5cafefcd TB |
327 | } |
328 | ||
329 | /** | |
127a98dc | 330 | * Generates the given message and stores packet(s) in the given array |
5cafefcd | 331 | */ |
127a98dc TB |
332 | static bool generate_message(private_task_manager_t *this, message_t *message, |
333 | array_t **packets) | |
5cafefcd | 334 | { |
127a98dc | 335 | enumerator_t *fragments; |
40bab9a1 | 336 | packet_t *fragment; |
127a98dc | 337 | |
40bab9a1 TB |
338 | if (this->ike_sa->generate_message_fragmented(this->ike_sa, message, |
339 | &fragments) != SUCCESS) | |
127a98dc | 340 | { |
127a98dc TB |
341 | return FALSE; |
342 | } | |
40bab9a1 | 343 | while (fragments->enumerate(fragments, &fragment)) |
127a98dc | 344 | { |
40bab9a1 | 345 | array_insert_create(packets, ARRAY_TAIL, fragment); |
5cafefcd | 346 | } |
127a98dc | 347 | fragments->destroy(fragments); |
40bab9a1 | 348 | return TRUE; |
5cafefcd TB |
349 | } |
350 | ||
f5a84055 | 351 | /** |
127a98dc | 352 | * Retransmit a packet (or its fragments) |
f5a84055 | 353 | */ |
b12c53ce | 354 | static status_t retransmit_packet(private_task_manager_t *this, uint32_t seqnr, |
127a98dc | 355 | u_int mid, u_int retransmitted, array_t *packets) |
23f4e4b4 | 356 | { |
127a98dc | 357 | packet_t *packet; |
389e4b8e | 358 | uint32_t t, max_jitter; |
23f4e4b4 | 359 | |
127a98dc | 360 | array_get(packets, 0, &packet); |
f5a84055 MW |
361 | if (retransmitted > this->retransmit_tries) |
362 | { | |
363 | DBG1(DBG_IKE, "giving up after %u retransmits", retransmitted - 1); | |
3c79b7b7 | 364 | charon->bus->alert(charon->bus, ALERT_RETRANSMIT_SEND_TIMEOUT, packet); |
f5a84055 MW |
365 | return DESTROY_ME; |
366 | } | |
b12c53ce | 367 | t = (uint32_t)(this->retransmit_timeout * 1000.0 * |
f5a84055 | 368 | pow(this->retransmit_base, retransmitted)); |
00d54711 TB |
369 | if (this->retransmit_limit) |
370 | { | |
371 | t = min(t, this->retransmit_limit); | |
372 | } | |
389e4b8e TB |
373 | if (this->retransmit_jitter) |
374 | { | |
375 | max_jitter = (t / 100.0) * this->retransmit_jitter; | |
376 | t -= max_jitter * (random() / (RAND_MAX + 1.0)); | |
377 | } | |
f5a84055 MW |
378 | if (retransmitted) |
379 | { | |
380 | DBG1(DBG_IKE, "sending retransmit %u of %s message ID %u, seq %u", | |
381 | retransmitted, seqnr < RESPONDING_SEQ ? "request" : "response", | |
382 | mid, seqnr < RESPONDING_SEQ ? seqnr : seqnr - RESPONDING_SEQ); | |
9da65eae TE |
383 | charon->bus->alert(charon->bus, ALERT_RETRANSMIT_SEND, packet, |
384 | retransmitted); | |
f5a84055 | 385 | } |
127a98dc | 386 | send_packets(this, packets); |
f5a84055 MW |
387 | lib->scheduler->schedule_job_ms(lib->scheduler, (job_t*) |
388 | retransmit_job_create(seqnr, this->ike_sa->get_id(this->ike_sa)), t); | |
8c50bb6c | 389 | return SUCCESS; |
f5a84055 MW |
390 | } |
391 | ||
392 | METHOD(task_manager_t, retransmit, status_t, | |
b12c53ce | 393 | private_task_manager_t *this, uint32_t seqnr) |
f5a84055 MW |
394 | { |
395 | status_t status = SUCCESS; | |
396 | ||
127a98dc TB |
397 | if (seqnr == this->initiating.seqnr && |
398 | array_count(this->initiating.packets)) | |
f5a84055 | 399 | { |
127a98dc TB |
400 | status = retransmit_packet(this, seqnr, this->initiating.mid, |
401 | this->initiating.retransmitted, this->initiating.packets); | |
8c50bb6c | 402 | if (status == SUCCESS) |
23f4e4b4 | 403 | { |
f5a84055 | 404 | this->initiating.retransmitted++; |
23f4e4b4 | 405 | } |
f5a84055 | 406 | } |
127a98dc TB |
407 | if (seqnr == this->responding.seqnr && |
408 | array_count(this->responding.packets)) | |
f5a84055 | 409 | { |
127a98dc TB |
410 | status = retransmit_packet(this, seqnr, this->responding.mid, |
411 | this->responding.retransmitted, this->responding.packets); | |
8c50bb6c | 412 | if (status == SUCCESS) |
23f4e4b4 | 413 | { |
f5a84055 | 414 | this->responding.retransmitted++; |
23f4e4b4 | 415 | } |
23f4e4b4 | 416 | } |
f5a84055 | 417 | return status; |
23f4e4b4 CO |
418 | } |
419 | ||
27137790 MW |
420 | /** |
421 | * Check if we have to wait for a mode config before starting a quick mode | |
422 | */ | |
423 | static bool mode_config_expected(private_task_manager_t *this) | |
424 | { | |
101d26ba | 425 | enumerator_t *enumerator; |
27137790 | 426 | peer_cfg_t *peer_cfg; |
497ce2cf | 427 | char *pool; |
e3311e9b | 428 | bool local; |
101d26ba | 429 | host_t *host; |
27137790 MW |
430 | |
431 | peer_cfg = this->ike_sa->get_peer_cfg(this->ike_sa); | |
497ce2cf | 432 | if (peer_cfg) |
27137790 | 433 | { |
e3311e9b MW |
434 | if (peer_cfg->use_pull_mode(peer_cfg)) |
435 | { | |
436 | enumerator = peer_cfg->create_pool_enumerator(peer_cfg); | |
437 | if (!enumerator->enumerate(enumerator, &pool)) | |
438 | { /* no pool configured */ | |
439 | enumerator->destroy(enumerator); | |
440 | return FALSE; | |
441 | } | |
497ce2cf | 442 | enumerator->destroy(enumerator); |
e3311e9b MW |
443 | |
444 | local = FALSE; | |
497ce2cf | 445 | } |
e3311e9b MW |
446 | else |
447 | { | |
448 | enumerator = peer_cfg->create_virtual_ip_enumerator(peer_cfg); | |
449 | if (!enumerator->enumerate(enumerator, &host)) | |
450 | { /* not requesting a vip */ | |
451 | enumerator->destroy(enumerator); | |
452 | return FALSE; | |
453 | } | |
454 | enumerator->destroy(enumerator); | |
497ce2cf | 455 | |
e3311e9b MW |
456 | local = TRUE; |
457 | } | |
101d26ba | 458 | enumerator = this->ike_sa->create_virtual_ip_enumerator(this->ike_sa, |
e3311e9b | 459 | local); |
101d26ba | 460 | if (!enumerator->enumerate(enumerator, &host)) |
e3311e9b | 461 | { /* expecting a VIP exchange, but no VIP assigned yet */ |
101d26ba | 462 | enumerator->destroy(enumerator); |
27137790 MW |
463 | return TRUE; |
464 | } | |
101d26ba | 465 | enumerator->destroy(enumerator); |
27137790 MW |
466 | } |
467 | return FALSE; | |
468 | } | |
469 | ||
4a09d9ee MW |
470 | METHOD(task_manager_t, initiate, status_t, |
471 | private_task_manager_t *this) | |
472 | { | |
26b55dc6 MW |
473 | enumerator_t *enumerator; |
474 | task_t *task; | |
475 | message_t *message; | |
476 | host_t *me, *other; | |
73aaf76b | 477 | exchange_type_t exchange = EXCHANGE_TYPE_UNDEFINED; |
7ce504e1 | 478 | bool new_mid = FALSE, expect_response = FALSE, cancelled = FALSE, keep = FALSE; |
73aaf76b | 479 | |
477559ca MW |
480 | if (this->initiating.type != EXCHANGE_TYPE_UNDEFINED && |
481 | this->initiating.type != INFORMATIONAL_V1) | |
26b55dc6 MW |
482 | { |
483 | DBG2(DBG_IKE, "delaying task initiation, %N exchange in progress", | |
484 | exchange_type_names, this->initiating.type); | |
485 | /* do not initiate if we already have a message in the air */ | |
486 | return SUCCESS; | |
487 | } | |
488 | ||
489 | if (this->active_tasks->get_count(this->active_tasks) == 0) | |
490 | { | |
491 | DBG2(DBG_IKE, "activating new tasks"); | |
492 | switch (this->ike_sa->get_state(this->ike_sa)) | |
493 | { | |
494 | case IKE_CREATED: | |
2e3c9f87 | 495 | activate_task(this, TASK_ISAKMP_VENDOR); |
824dc0ad | 496 | activate_task(this, TASK_ISAKMP_CERT_PRE); |
a09972df | 497 | if (activate_task(this, TASK_MAIN_MODE)) |
26b55dc6 MW |
498 | { |
499 | exchange = ID_PROT; | |
500 | } | |
830ab2ae MW |
501 | else if (activate_task(this, TASK_AGGRESSIVE_MODE)) |
502 | { | |
503 | exchange = AGGRESSIVE; | |
504 | } | |
505 | activate_task(this, TASK_ISAKMP_CERT_POST); | |
506 | activate_task(this, TASK_ISAKMP_NATD); | |
26b55dc6 | 507 | break; |
c5dc9d33 | 508 | case IKE_CONNECTING: |
429d95fe MW |
509 | if (activate_task(this, TASK_ISAKMP_DELETE)) |
510 | { | |
511 | exchange = INFORMATIONAL_V1; | |
512 | new_mid = TRUE; | |
513 | break; | |
514 | } | |
69adeb5b | 515 | if (activate_task(this, TASK_XAUTH)) |
744c0801 | 516 | { |
c5dc9d33 | 517 | exchange = TRANSACTION; |
3e246c48 | 518 | new_mid = TRUE; |
429d95fe | 519 | break; |
744c0801 | 520 | } |
accf4612 MW |
521 | if (activate_task(this, TASK_INFORMATIONAL)) |
522 | { | |
523 | exchange = INFORMATIONAL_V1; | |
524 | new_mid = TRUE; | |
429d95fe | 525 | break; |
accf4612 | 526 | } |
c5dc9d33 CO |
527 | break; |
528 | case IKE_ESTABLISHED: | |
156b8662 MW |
529 | if (activate_task(this, TASK_MODE_CONFIG)) |
530 | { | |
531 | exchange = TRANSACTION; | |
532 | new_mid = TRUE; | |
533 | break; | |
534 | } | |
2e06179f | 535 | if (activate_task(this, TASK_QUICK_DELETE)) |
23f4e4b4 | 536 | { |
612fe541 | 537 | exchange = INFORMATIONAL_V1; |
3e246c48 MW |
538 | new_mid = TRUE; |
539 | break; | |
23f4e4b4 | 540 | } |
2e06179f | 541 | if (activate_task(this, TASK_ISAKMP_DELETE)) |
accf4612 MW |
542 | { |
543 | exchange = INFORMATIONAL_V1; | |
544 | new_mid = TRUE; | |
429d95fe | 545 | break; |
accf4612 | 546 | } |
612fe541 TB |
547 | if (!mode_config_expected(this) && |
548 | activate_task(this, TASK_QUICK_MODE)) | |
8ef2bae4 | 549 | { |
612fe541 | 550 | exchange = QUICK_MODE; |
8ef2bae4 | 551 | new_mid = TRUE; |
429d95fe | 552 | break; |
8ef2bae4 | 553 | } |
612fe541 | 554 | if (activate_task(this, TASK_INFORMATIONAL)) |
8ef2bae4 MW |
555 | { |
556 | exchange = INFORMATIONAL_V1; | |
557 | new_mid = TRUE; | |
429d95fe | 558 | break; |
8ef2bae4 | 559 | } |
3e6b7403 CO |
560 | if (activate_task(this, TASK_ISAKMP_DPD)) |
561 | { | |
562 | exchange = INFORMATIONAL_V1; | |
563 | new_mid = TRUE; | |
564 | break; | |
565 | } | |
744c0801 | 566 | break; |
b56b8502 TB |
567 | case IKE_REKEYING: |
568 | if (activate_task(this, TASK_ISAKMP_DELETE)) | |
569 | { | |
570 | exchange = INFORMATIONAL_V1; | |
571 | new_mid = TRUE; | |
572 | break; | |
573 | } | |
f15c85a4 TB |
574 | if (activate_task(this, TASK_ISAKMP_DPD)) |
575 | { | |
576 | exchange = INFORMATIONAL_V1; | |
577 | new_mid = TRUE; | |
578 | break; | |
579 | } | |
b56b8502 | 580 | break; |
26b55dc6 MW |
581 | default: |
582 | break; | |
583 | } | |
584 | } | |
585 | else | |
586 | { | |
587 | DBG2(DBG_IKE, "reinitiating already active tasks"); | |
588 | enumerator = this->active_tasks->create_enumerator(this->active_tasks); | |
589 | while (enumerator->enumerate(enumerator, (void**)&task)) | |
590 | { | |
591 | DBG2(DBG_IKE, " %N task", task_type_names, task->get_type(task)); | |
592 | switch (task->get_type(task)) | |
593 | { | |
a09972df | 594 | case TASK_MAIN_MODE: |
26b55dc6 MW |
595 | exchange = ID_PROT; |
596 | break; | |
830ab2ae MW |
597 | case TASK_AGGRESSIVE_MODE: |
598 | exchange = AGGRESSIVE; | |
599 | break; | |
744c0801 MW |
600 | case TASK_QUICK_MODE: |
601 | exchange = QUICK_MODE; | |
602 | break; | |
69adeb5b | 603 | case TASK_XAUTH: |
52ac2ceb CO |
604 | exchange = TRANSACTION; |
605 | new_mid = TRUE; | |
606 | break; | |
26b55dc6 MW |
607 | default: |
608 | continue; | |
609 | } | |
610 | break; | |
611 | } | |
612 | enumerator->destroy(enumerator); | |
613 | } | |
614 | ||
73aaf76b | 615 | if (exchange == EXCHANGE_TYPE_UNDEFINED) |
26b55dc6 MW |
616 | { |
617 | DBG2(DBG_IKE, "nothing to initiate"); | |
618 | /* nothing to do yet... */ | |
619 | return SUCCESS; | |
620 | } | |
621 | ||
622 | me = this->ike_sa->get_my_host(this->ike_sa); | |
623 | other = this->ike_sa->get_other_host(this->ike_sa); | |
624 | ||
3e246c48 | 625 | if (new_mid) |
26b55dc6 | 626 | { |
1bb9c51e TB |
627 | if (!this->rng->get_bytes(this->rng, sizeof(this->initiating.mid), |
628 | (void*)&this->initiating.mid)) | |
629 | { | |
630 | DBG1(DBG_IKE, "failed to allocate message ID, destroying IKE_SA"); | |
631 | flush(this); | |
632 | return DESTROY_ME; | |
633 | } | |
26b55dc6 | 634 | } |
1bb9c51e | 635 | message = message_create(IKEV1_MAJOR_VERSION, IKEV1_MINOR_VERSION); |
3e246c48 | 636 | message->set_message_id(message, this->initiating.mid); |
26b55dc6 MW |
637 | message->set_source(message, me->clone(me)); |
638 | message->set_destination(message, other->clone(other)); | |
639 | message->set_exchange_type(message, exchange); | |
640 | this->initiating.type = exchange; | |
641 | this->initiating.retransmitted = 0; | |
642 | ||
643 | enumerator = this->active_tasks->create_enumerator(this->active_tasks); | |
644 | while (enumerator->enumerate(enumerator, (void*)&task)) | |
645 | { | |
646 | switch (task->build(task, message)) | |
647 | { | |
648 | case SUCCESS: | |
649 | /* task completed, remove it */ | |
650 | this->active_tasks->remove_at(this->active_tasks, enumerator); | |
182d55b2 MW |
651 | if (task->get_type(task) == TASK_AGGRESSIVE_MODE || |
652 | task->get_type(task) == TASK_QUICK_MODE) | |
1b82eb23 MW |
653 | { /* last message of three message exchange */ |
654 | keep = TRUE; | |
655 | } | |
26b55dc6 | 656 | task->destroy(task); |
590ca1d4 | 657 | continue; |
26b55dc6 | 658 | case NEED_MORE: |
751bd02e | 659 | expect_response = TRUE; |
26b55dc6 | 660 | /* processed, but task needs another exchange */ |
590ca1d4 MW |
661 | continue; |
662 | case ALREADY_DONE: | |
7ce504e1 | 663 | cancelled = TRUE; |
26b55dc6 MW |
664 | break; |
665 | case FAILED: | |
666 | default: | |
667 | if (this->ike_sa->get_state(this->ike_sa) != IKE_CONNECTING) | |
668 | { | |
669 | charon->bus->ike_updown(charon->bus, this->ike_sa, FALSE); | |
670 | } | |
671 | /* FALL */ | |
672 | case DESTROY_ME: | |
673 | /* critical failure, destroy IKE_SA */ | |
674 | enumerator->destroy(enumerator); | |
675 | message->destroy(message); | |
676 | flush(this); | |
677 | return DESTROY_ME; | |
678 | } | |
590ca1d4 | 679 | break; |
26b55dc6 MW |
680 | } |
681 | enumerator->destroy(enumerator); | |
682 | ||
1b82eb23 MW |
683 | if (this->active_tasks->get_count(this->active_tasks) == 0 && |
684 | (exchange == QUICK_MODE || exchange == AGGRESSIVE)) | |
41fbde45 MW |
685 | { /* tasks completed, no exchange active anymore */ |
686 | this->initiating.type = EXCHANGE_TYPE_UNDEFINED; | |
687 | } | |
7ce504e1 | 688 | if (cancelled) |
b64d6423 MW |
689 | { |
690 | message->destroy(message); | |
691 | return initiate(this); | |
692 | } | |
26b55dc6 | 693 | |
127a98dc TB |
694 | clear_packets(this->initiating.packets); |
695 | if (!generate_message(this, message, &this->initiating.packets)) | |
26b55dc6 MW |
696 | { |
697 | /* message generation failed. There is nothing more to do than to | |
698 | * close the SA */ | |
699 | message->destroy(message); | |
700 | flush(this); | |
701 | charon->bus->ike_updown(charon->bus, this->ike_sa, FALSE); | |
702 | return DESTROY_ME; | |
703 | } | |
26b55dc6 | 704 | |
f5a84055 | 705 | this->initiating.seqnr++; |
3babde90 | 706 | if (expect_response) |
751bd02e | 707 | { |
f5a84055 | 708 | message->destroy(message); |
751bd02e CO |
709 | return retransmit(this, this->initiating.seqnr); |
710 | } | |
8c50bb6c TE |
711 | send_packets(this, this->initiating.packets); |
712 | if (!keep) | |
f5a84055 | 713 | { |
127a98dc | 714 | clear_packets(this->initiating.packets); |
f5a84055 MW |
715 | } |
716 | message->destroy(message); | |
46505067 | 717 | |
07095794 | 718 | if (exchange == INFORMATIONAL_V1) |
46505067 | 719 | { |
07095794 MW |
720 | switch (this->ike_sa->get_state(this->ike_sa)) |
721 | { | |
722 | case IKE_CONNECTING: | |
723 | /* close after sending an INFORMATIONAL when unestablished */ | |
724 | return FAILED; | |
725 | case IKE_DELETING: | |
726 | /* close after sending a DELETE */ | |
727 | return DESTROY_ME; | |
728 | default: | |
729 | break; | |
730 | } | |
46505067 | 731 | } |
daee47ba | 732 | return initiate(this); |
4a09d9ee MW |
733 | } |
734 | ||
4a09d9ee MW |
735 | /** |
736 | * build a response depending on the "passive" task list | |
737 | */ | |
738 | static status_t build_response(private_task_manager_t *this, message_t *request) | |
739 | { | |
740 | enumerator_t *enumerator; | |
741 | task_t *task; | |
742 | message_t *message; | |
743 | host_t *me, *other; | |
7ce504e1 | 744 | bool delete = FALSE, cancelled = FALSE, expect_request = FALSE; |
4a09d9ee MW |
745 | |
746 | me = request->get_destination(request); | |
747 | other = request->get_source(request); | |
748 | ||
749 | message = message_create(IKEV1_MAJOR_VERSION, IKEV1_MINOR_VERSION); | |
750 | message->set_exchange_type(message, request->get_exchange_type(request)); | |
751 | /* send response along the path the request came in */ | |
752 | message->set_source(message, me->clone(me)); | |
753 | message->set_destination(message, other->clone(other)); | |
1b82eb23 | 754 | message->set_message_id(message, request->get_message_id(request)); |
4a09d9ee MW |
755 | message->set_request(message, FALSE); |
756 | ||
f5a84055 MW |
757 | this->responding.mid = request->get_message_id(request); |
758 | this->responding.retransmitted = 0; | |
759 | this->responding.seqnr++; | |
760 | ||
4a09d9ee MW |
761 | enumerator = this->passive_tasks->create_enumerator(this->passive_tasks); |
762 | while (enumerator->enumerate(enumerator, (void*)&task)) | |
763 | { | |
764 | switch (task->build(task, message)) | |
765 | { | |
766 | case SUCCESS: | |
767 | /* task completed, remove it */ | |
768 | this->passive_tasks->remove_at(this->passive_tasks, enumerator); | |
f5a84055 | 769 | task->destroy(task); |
590ca1d4 | 770 | continue; |
4a09d9ee MW |
771 | case NEED_MORE: |
772 | /* processed, but task needs another exchange */ | |
346dad30 MW |
773 | if (task->get_type(task) == TASK_QUICK_MODE || |
774 | task->get_type(task) == TASK_AGGRESSIVE_MODE) | |
f5a84055 MW |
775 | { /* we rely on initiator retransmission, except for |
776 | * three-message exchanges */ | |
777 | expect_request = TRUE; | |
4a09d9ee | 778 | } |
590ca1d4 MW |
779 | continue; |
780 | case ALREADY_DONE: | |
7ce504e1 | 781 | cancelled = TRUE; |
4a09d9ee | 782 | break; |
37a22a16 TB |
783 | case INVALID_ARG: |
784 | if (task->get_type(task) == TASK_QUICK_MODE) | |
785 | { /* not responsible for this exchange */ | |
786 | continue; | |
787 | } | |
788 | /* FALL */ | |
4a09d9ee MW |
789 | case FAILED: |
790 | default: | |
791 | charon->bus->ike_updown(charon->bus, this->ike_sa, FALSE); | |
792 | /* FALL */ | |
793 | case DESTROY_ME: | |
794 | /* destroy IKE_SA, but SEND response first */ | |
795 | delete = TRUE; | |
796 | break; | |
797 | } | |
590ca1d4 | 798 | break; |
4a09d9ee MW |
799 | } |
800 | enumerator->destroy(enumerator); | |
801 | ||
127a98dc | 802 | clear_packets(this->responding.packets); |
7ce504e1 | 803 | if (cancelled) |
b64d6423 MW |
804 | { |
805 | message->destroy(message); | |
806 | return initiate(this); | |
807 | } | |
127a98dc | 808 | if (!generate_message(this, message, &this->responding.packets)) |
4a09d9ee | 809 | { |
127a98dc | 810 | message->destroy(message); |
4a09d9ee MW |
811 | charon->bus->ike_updown(charon->bus, this->ike_sa, FALSE); |
812 | return DESTROY_ME; | |
813 | } | |
127a98dc | 814 | message->destroy(message); |
4a09d9ee | 815 | |
f5a84055 MW |
816 | if (expect_request && !delete) |
817 | { | |
818 | return retransmit(this, this->responding.seqnr); | |
819 | } | |
127a98dc | 820 | send_packets(this, this->responding.packets); |
4a09d9ee MW |
821 | if (delete) |
822 | { | |
823 | return DESTROY_ME; | |
824 | } | |
825 | return SUCCESS; | |
826 | } | |
827 | ||
fbbd439b CO |
828 | /** |
829 | * Send a notify in a separate INFORMATIONAL exchange back to the sender. | |
e647c98a | 830 | * The notify protocol_id is set to ISAKMP |
fbbd439b | 831 | */ |
b4705269 MW |
832 | static void send_notify(private_task_manager_t *this, message_t *request, |
833 | notify_type_t type) | |
fbbd439b CO |
834 | { |
835 | message_t *response; | |
127a98dc | 836 | array_t *packets = NULL; |
fbbd439b | 837 | host_t *me, *other; |
b12c53ce | 838 | uint32_t mid; |
fbbd439b | 839 | |
3973ffa4 | 840 | if (request->get_exchange_type(request) == INFORMATIONAL_V1) |
fbbd439b CO |
841 | { /* don't respond to INFORMATIONAL requests to avoid a notify war */ |
842 | DBG1(DBG_IKE, "ignore malformed INFORMATIONAL request"); | |
843 | return; | |
844 | } | |
1bb9c51e TB |
845 | if (!this->rng->get_bytes(this->rng, sizeof(mid), (void*)&mid)) |
846 | { | |
847 | DBG1(DBG_IKE, "failed to allocate message ID"); | |
848 | return; | |
849 | } | |
fbbd439b CO |
850 | response = message_create(IKEV1_MAJOR_VERSION, IKEV1_MINOR_VERSION); |
851 | response->set_exchange_type(response, INFORMATIONAL_V1); | |
852 | response->set_request(response, TRUE); | |
fbbd439b | 853 | response->set_message_id(response, mid); |
b4705269 | 854 | response->add_payload(response, (payload_t*) |
3ecfc83c | 855 | notify_payload_create_from_protocol_and_type(PLV1_NOTIFY, |
b4705269 | 856 | PROTO_IKE, type)); |
fbbd439b CO |
857 | |
858 | me = this->ike_sa->get_my_host(this->ike_sa); | |
859 | if (me->is_anyaddr(me)) | |
860 | { | |
861 | me = request->get_destination(request); | |
862 | this->ike_sa->set_my_host(this->ike_sa, me->clone(me)); | |
863 | } | |
864 | other = this->ike_sa->get_other_host(this->ike_sa); | |
865 | if (other->is_anyaddr(other)) | |
866 | { | |
867 | other = request->get_source(request); | |
868 | this->ike_sa->set_other_host(this->ike_sa, other->clone(other)); | |
869 | } | |
870 | response->set_source(response, me->clone(me)); | |
871 | response->set_destination(response, other->clone(other)); | |
127a98dc | 872 | if (generate_message(this, response, &packets)) |
fbbd439b | 873 | { |
127a98dc | 874 | send_packets(this, packets); |
fbbd439b | 875 | } |
127a98dc TB |
876 | clear_packets(packets); |
877 | array_destroy(packets); | |
fbbd439b CO |
878 | response->destroy(response); |
879 | } | |
880 | ||
24742c0f MW |
881 | /** |
882 | * Process a DPD request/response | |
883 | */ | |
884 | static bool process_dpd(private_task_manager_t *this, message_t *message) | |
885 | { | |
886 | notify_payload_t *notify; | |
887 | notify_type_t type; | |
b12c53ce | 888 | uint32_t seq; |
24742c0f MW |
889 | chunk_t data; |
890 | ||
891 | type = DPD_R_U_THERE; | |
892 | notify = message->get_notify(message, type); | |
893 | if (!notify) | |
894 | { | |
895 | type = DPD_R_U_THERE_ACK; | |
896 | notify = message->get_notify(message, type); | |
897 | } | |
898 | if (!notify) | |
899 | { | |
900 | return FALSE; | |
901 | } | |
902 | data = notify->get_notification_data(notify); | |
903 | if (data.len != 4) | |
904 | { | |
905 | return FALSE; | |
906 | } | |
907 | seq = untoh32(data.ptr); | |
908 | ||
909 | if (type == DPD_R_U_THERE) | |
910 | { | |
911 | if (this->dpd_recv == 0 || seq == this->dpd_recv) | |
912 | { /* check sequence validity */ | |
913 | this->dpd_recv = seq + 1; | |
914 | this->ike_sa->set_statistic(this->ike_sa, STAT_INBOUND, | |
915 | time_monotonic(NULL)); | |
916 | } | |
917 | /* but respond anyway */ | |
918 | this->ike_sa->queue_task(this->ike_sa, | |
919 | &isakmp_dpd_create(this->ike_sa, DPD_R_U_THERE_ACK, seq)->task); | |
920 | } | |
921 | else /* DPD_R_U_THERE_ACK */ | |
922 | { | |
923 | if (seq == this->dpd_send - 1) | |
924 | { | |
925 | this->ike_sa->set_statistic(this->ike_sa, STAT_INBOUND, | |
926 | time_monotonic(NULL)); | |
927 | } | |
928 | else | |
929 | { | |
930 | DBG1(DBG_IKE, "received invalid DPD sequence number %u " | |
931 | "(expected %u), ignored", seq, this->dpd_send - 1); | |
932 | } | |
933 | } | |
934 | return TRUE; | |
935 | } | |
936 | ||
4de361d9 TB |
937 | /** |
938 | * Check if we already have a quick mode task queued for the exchange with the | |
939 | * given message ID | |
940 | */ | |
b12c53ce | 941 | static bool have_quick_mode_task(private_task_manager_t *this, uint32_t mid) |
4de361d9 TB |
942 | { |
943 | enumerator_t *enumerator; | |
944 | quick_mode_t *qm; | |
945 | task_t *task; | |
946 | bool found = FALSE; | |
947 | ||
948 | enumerator = this->passive_tasks->create_enumerator(this->passive_tasks); | |
949 | while (enumerator->enumerate(enumerator, &task)) | |
950 | { | |
951 | if (task->get_type(task) == TASK_QUICK_MODE) | |
952 | { | |
953 | qm = (quick_mode_t*)task; | |
954 | if (qm->get_mid(qm) == mid) | |
955 | { | |
956 | found = TRUE; | |
957 | break; | |
958 | } | |
959 | } | |
960 | } | |
961 | enumerator->destroy(enumerator); | |
962 | return found; | |
963 | } | |
964 | ||
b0b0c913 | 965 | /** |
1b4e7fe1 | 966 | * Check if we still have a specific task queued |
b0b0c913 | 967 | */ |
1b4e7fe1 | 968 | static bool have_task_queued(private_task_manager_t *this, task_type_t type) |
b0b0c913 TB |
969 | { |
970 | enumerator_t *enumerator; | |
971 | task_t *task; | |
972 | bool found = FALSE; | |
973 | ||
974 | enumerator = this->passive_tasks->create_enumerator(this->passive_tasks); | |
975 | while (enumerator->enumerate(enumerator, &task)) | |
976 | { | |
1b4e7fe1 | 977 | if (task->get_type(task) == type) |
b0b0c913 TB |
978 | { |
979 | found = TRUE; | |
980 | break; | |
981 | } | |
982 | } | |
983 | enumerator->destroy(enumerator); | |
984 | return found; | |
985 | } | |
986 | ||
4a09d9ee MW |
987 | /** |
988 | * handle an incoming request message | |
989 | */ | |
990 | static status_t process_request(private_task_manager_t *this, | |
991 | message_t *message) | |
992 | { | |
993 | enumerator_t *enumerator; | |
994 | task_t *task = NULL; | |
ff6b084a | 995 | bool send_response = FALSE, dpd = FALSE; |
4a09d9ee | 996 | |
9276f712 | 997 | if (message->get_exchange_type(message) == INFORMATIONAL_V1 || |
4de361d9 | 998 | message->get_exchange_type(message) == QUICK_MODE || |
9276f712 | 999 | this->passive_tasks->get_count(this->passive_tasks) == 0) |
4a09d9ee MW |
1000 | { /* create tasks depending on request type, if not already some queued */ |
1001 | switch (message->get_exchange_type(message)) | |
1002 | { | |
1003 | case ID_PROT: | |
2e3c9f87 | 1004 | task = (task_t *)isakmp_vendor_create(this->ike_sa, FALSE); |
01685247 | 1005 | this->passive_tasks->insert_last(this->passive_tasks, task); |
824dc0ad | 1006 | task = (task_t*)isakmp_cert_pre_create(this->ike_sa, FALSE); |
8ad5cd1f | 1007 | this->passive_tasks->insert_last(this->passive_tasks, task); |
c73c832c MW |
1008 | task = (task_t *)main_mode_create(this->ike_sa, FALSE); |
1009 | this->passive_tasks->insert_last(this->passive_tasks, task); | |
0aa2af5e | 1010 | task = (task_t*)isakmp_cert_post_create(this->ike_sa, FALSE); |
c64a4b4f | 1011 | this->passive_tasks->insert_last(this->passive_tasks, task); |
79d6fc7f | 1012 | task = (task_t *)isakmp_natd_create(this->ike_sa, FALSE); |
1cc4ec46 | 1013 | this->passive_tasks->insert_last(this->passive_tasks, task); |
4a09d9ee MW |
1014 | break; |
1015 | case AGGRESSIVE: | |
830ab2ae MW |
1016 | task = (task_t *)isakmp_vendor_create(this->ike_sa, FALSE); |
1017 | this->passive_tasks->insert_last(this->passive_tasks, task); | |
1018 | task = (task_t*)isakmp_cert_pre_create(this->ike_sa, FALSE); | |
1019 | this->passive_tasks->insert_last(this->passive_tasks, task); | |
1020 | task = (task_t *)aggressive_mode_create(this->ike_sa, FALSE); | |
1021 | this->passive_tasks->insert_last(this->passive_tasks, task); | |
1022 | task = (task_t*)isakmp_cert_post_create(this->ike_sa, FALSE); | |
1023 | this->passive_tasks->insert_last(this->passive_tasks, task); | |
1024 | task = (task_t *)isakmp_natd_create(this->ike_sa, FALSE); | |
1025 | this->passive_tasks->insert_last(this->passive_tasks, task); | |
1026 | break; | |
4a09d9ee | 1027 | case QUICK_MODE: |
a22b9e4f MW |
1028 | if (this->ike_sa->get_state(this->ike_sa) != IKE_ESTABLISHED) |
1029 | { | |
1030 | DBG1(DBG_IKE, "received quick mode request for " | |
1031 | "unestablished IKE_SA, ignored"); | |
1032 | return FAILED; | |
1033 | } | |
4de361d9 TB |
1034 | if (have_quick_mode_task(this, message->get_message_id(message))) |
1035 | { | |
1036 | break; | |
1037 | } | |
744c0801 MW |
1038 | task = (task_t *)quick_mode_create(this->ike_sa, NULL, |
1039 | NULL, NULL); | |
1040 | this->passive_tasks->insert_last(this->passive_tasks, task); | |
1041 | break; | |
4a09d9ee | 1042 | case INFORMATIONAL_V1: |
24742c0f | 1043 | if (process_dpd(this, message)) |
2ddd45c9 | 1044 | { |
ff6b084a | 1045 | dpd = TRUE; |
2ddd45c9 MW |
1046 | } |
1047 | else | |
1048 | { | |
1049 | task = (task_t *)informational_create(this->ike_sa, NULL); | |
24742c0f | 1050 | this->passive_tasks->insert_first(this->passive_tasks, task); |
2ddd45c9 | 1051 | } |
07abb470 | 1052 | break; |
c5dc9d33 | 1053 | case TRANSACTION: |
764035d5 | 1054 | if (this->ike_sa->get_state(this->ike_sa) != IKE_CONNECTING) |
156b8662 | 1055 | { |
e3311e9b MW |
1056 | task = (task_t *)mode_config_create(this->ike_sa, |
1057 | FALSE, TRUE); | |
156b8662 MW |
1058 | } |
1059 | else | |
1060 | { | |
1061 | task = (task_t *)xauth_create(this->ike_sa, FALSE); | |
1062 | } | |
c5dc9d33 CO |
1063 | this->passive_tasks->insert_last(this->passive_tasks, task); |
1064 | break; | |
4a09d9ee MW |
1065 | default: |
1066 | return FAILED; | |
1067 | } | |
1068 | } | |
24742c0f | 1069 | if (dpd) |
ff6b084a | 1070 | { |
24742c0f | 1071 | return initiate(this); |
ff6b084a | 1072 | } |
24742c0f MW |
1073 | this->ike_sa->set_statistic(this->ike_sa, STAT_INBOUND, time_monotonic(NULL)); |
1074 | ||
4a09d9ee MW |
1075 | /* let the tasks process the message */ |
1076 | enumerator = this->passive_tasks->create_enumerator(this->passive_tasks); | |
1077 | while (enumerator->enumerate(enumerator, (void*)&task)) | |
1078 | { | |
1079 | switch (task->process(task, message)) | |
1080 | { | |
1081 | case SUCCESS: | |
1082 | /* task completed, remove it */ | |
1083 | this->passive_tasks->remove_at(this->passive_tasks, enumerator); | |
1084 | task->destroy(task); | |
590ca1d4 | 1085 | continue; |
4a09d9ee MW |
1086 | case NEED_MORE: |
1087 | /* processed, but task needs at least another call to build() */ | |
8cb6f4f9 | 1088 | send_response = TRUE; |
590ca1d4 MW |
1089 | continue; |
1090 | case ALREADY_DONE: | |
1091 | send_response = FALSE; | |
4a09d9ee | 1092 | break; |
37a22a16 TB |
1093 | case INVALID_ARG: |
1094 | if (task->get_type(task) == TASK_QUICK_MODE) | |
1095 | { /* not responsible for this exchange */ | |
1096 | continue; | |
1097 | } | |
1098 | /* FALL */ | |
4a09d9ee MW |
1099 | case FAILED: |
1100 | default: | |
1101 | charon->bus->ike_updown(charon->bus, this->ike_sa, FALSE); | |
1102 | /* FALL */ | |
1103 | case DESTROY_ME: | |
1104 | /* critical failure, destroy IKE_SA */ | |
1105 | this->passive_tasks->remove_at(this->passive_tasks, enumerator); | |
1106 | enumerator->destroy(enumerator); | |
1107 | task->destroy(task); | |
1108 | return DESTROY_ME; | |
1109 | } | |
590ca1d4 | 1110 | break; |
4a09d9ee MW |
1111 | } |
1112 | enumerator->destroy(enumerator); | |
1113 | ||
8cb6f4f9 TB |
1114 | if (send_response) |
1115 | { | |
69adeb5b MW |
1116 | if (build_response(this, message) != SUCCESS) |
1117 | { | |
1118 | return DESTROY_ME; | |
1119 | } | |
1120 | } | |
7b34de45 MW |
1121 | else |
1122 | { /* We don't send a response, so don't retransmit one if we get | |
1123 | * the same message again. */ | |
127a98dc | 1124 | clear_packets(this->responding.packets); |
7b34de45 | 1125 | } |
25863fe1 TB |
1126 | if (this->queued && |
1127 | this->queued->get_exchange_type(this->queued) == INFORMATIONAL_V1) | |
1128 | { | |
1129 | message_t *queued; | |
1130 | status_t status; | |
1131 | ||
1132 | queued = this->queued; | |
1133 | this->queued = NULL; | |
1134 | status = this->public.task_manager.process_message( | |
1135 | &this->public.task_manager, queued); | |
1136 | queued->destroy(queued); | |
1137 | if (status == DESTROY_ME) | |
1138 | { | |
1139 | return status; | |
1140 | } | |
1141 | } | |
69adeb5b MW |
1142 | if (this->passive_tasks->get_count(this->passive_tasks) == 0 && |
1143 | this->queued_tasks->get_count(this->queued_tasks) > 0) | |
1144 | { | |
1145 | /* passive tasks completed, check if an active task has been queued, | |
1146 | * such as XAUTH or modeconfig push */ | |
1147 | return initiate(this); | |
8cb6f4f9 TB |
1148 | } |
1149 | return SUCCESS; | |
4a09d9ee MW |
1150 | } |
1151 | ||
26b55dc6 MW |
1152 | /** |
1153 | * handle an incoming response message | |
1154 | */ | |
1155 | static status_t process_response(private_task_manager_t *this, | |
1156 | message_t *message) | |
1157 | { | |
1158 | enumerator_t *enumerator; | |
4e98ca18 | 1159 | message_t *queued; |
f91b6ac7 | 1160 | status_t status; |
26b55dc6 MW |
1161 | task_t *task; |
1162 | ||
1163 | if (message->get_exchange_type(message) != this->initiating.type) | |
1164 | { | |
0235914d MW |
1165 | /* Windows server sends a fourth quick mode message having an initial |
1166 | * contact notify. Ignore this message for compatibility. */ | |
1167 | if (this->initiating.type == EXCHANGE_TYPE_UNDEFINED && | |
1168 | message->get_exchange_type(message) == QUICK_MODE && | |
1169 | message->get_notify(message, INITIAL_CONTACT)) | |
1170 | { | |
1171 | DBG1(DBG_IKE, "ignoring fourth Quick Mode message"); | |
1172 | return SUCCESS; | |
1173 | } | |
26b55dc6 MW |
1174 | DBG1(DBG_IKE, "received %N response, but expected %N", |
1175 | exchange_type_names, message->get_exchange_type(message), | |
1176 | exchange_type_names, this->initiating.type); | |
1177 | charon->bus->ike_updown(charon->bus, this->ike_sa, FALSE); | |
1178 | return DESTROY_ME; | |
1179 | } | |
1180 | ||
1181 | enumerator = this->active_tasks->create_enumerator(this->active_tasks); | |
1182 | while (enumerator->enumerate(enumerator, (void*)&task)) | |
1183 | { | |
1184 | switch (task->process(task, message)) | |
1185 | { | |
1186 | case SUCCESS: | |
1187 | /* task completed, remove it */ | |
1188 | this->active_tasks->remove_at(this->active_tasks, enumerator); | |
1189 | task->destroy(task); | |
590ca1d4 | 1190 | continue; |
26b55dc6 MW |
1191 | case NEED_MORE: |
1192 | /* processed, but task needs another exchange */ | |
590ca1d4 MW |
1193 | continue; |
1194 | case ALREADY_DONE: | |
26b55dc6 MW |
1195 | break; |
1196 | case FAILED: | |
1197 | default: | |
1198 | charon->bus->ike_updown(charon->bus, this->ike_sa, FALSE); | |
1199 | /* FALL */ | |
1200 | case DESTROY_ME: | |
1201 | /* critical failure, destroy IKE_SA */ | |
1202 | this->active_tasks->remove_at(this->active_tasks, enumerator); | |
1203 | enumerator->destroy(enumerator); | |
1204 | task->destroy(task); | |
1205 | return DESTROY_ME; | |
1206 | } | |
590ca1d4 | 1207 | break; |
26b55dc6 MW |
1208 | } |
1209 | enumerator->destroy(enumerator); | |
1210 | ||
0ddda7ca | 1211 | if (this->initiating.retransmitted > 1) |
bd71ba0f TB |
1212 | { |
1213 | packet_t *packet = NULL; | |
1214 | array_get(this->initiating.packets, 0, &packet); | |
1215 | charon->bus->alert(charon->bus, ALERT_RETRANSMIT_SEND_CLEARED, packet); | |
1216 | } | |
26b55dc6 | 1217 | this->initiating.type = EXCHANGE_TYPE_UNDEFINED; |
127a98dc | 1218 | clear_packets(this->initiating.packets); |
26b55dc6 | 1219 | |
3805880c TB |
1220 | if (this->queued && !this->active_tasks->get_count(this->active_tasks) && |
1221 | this->queued->get_exchange_type(this->queued) == TRANSACTION) | |
f91b6ac7 | 1222 | { |
4e98ca18 | 1223 | queued = this->queued; |
f91b6ac7 | 1224 | this->queued = NULL; |
4e98ca18 MW |
1225 | status = this->public.task_manager.process_message( |
1226 | &this->public.task_manager, queued); | |
1227 | queued->destroy(queued); | |
f91b6ac7 MW |
1228 | if (status == DESTROY_ME) |
1229 | { | |
1230 | return status; | |
1231 | } | |
1232 | } | |
1233 | ||
26b55dc6 MW |
1234 | return initiate(this); |
1235 | } | |
1236 | ||
30216000 TB |
1237 | static status_t handle_fragment(private_task_manager_t *this, message_t *msg) |
1238 | { | |
70e0be07 | 1239 | status_t status; |
30216000 | 1240 | |
70e0be07 | 1241 | if (!this->defrag) |
30216000 | 1242 | { |
70e0be07 TB |
1243 | this->defrag = message_create_defrag(msg); |
1244 | if (!this->defrag) | |
30216000 | 1245 | { |
70e0be07 | 1246 | return FAILED; |
30216000 TB |
1247 | } |
1248 | } | |
70e0be07 TB |
1249 | status = this->defrag->add_fragment(this->defrag, msg); |
1250 | if (status == SUCCESS) | |
8fc83834 | 1251 | { |
70e0be07 TB |
1252 | lib->processor->queue_job(lib->processor, |
1253 | (job_t*)process_message_job_create(this->defrag)); | |
1254 | this->defrag = NULL; | |
1255 | /* do not process the last fragment */ | |
30216000 TB |
1256 | status = NEED_MORE; |
1257 | } | |
1258 | return status; | |
1259 | } | |
1260 | ||
b235e69c TB |
1261 | /** |
1262 | * Parse the given message and verify that it is valid. | |
1263 | */ | |
1264 | static status_t parse_message(private_task_manager_t *this, message_t *msg) | |
1265 | { | |
1266 | status_t status; | |
1267 | ||
1268 | status = msg->parse_body(msg, this->ike_sa->get_keymat(this->ike_sa)); | |
1269 | ||
1270 | if (status != SUCCESS) | |
1271 | { | |
1272 | switch (status) | |
1273 | { | |
29a5e070 TB |
1274 | case NOT_SUPPORTED: |
1275 | DBG1(DBG_IKE, "unsupported exchange type"); | |
b4705269 | 1276 | send_notify(this, msg, INVALID_EXCHANGE_TYPE); |
29a5e070 | 1277 | break; |
b235e69c TB |
1278 | case PARSE_ERROR: |
1279 | DBG1(DBG_IKE, "message parsing failed"); | |
b4705269 | 1280 | send_notify(this, msg, PAYLOAD_MALFORMED); |
b235e69c TB |
1281 | break; |
1282 | case VERIFY_ERROR: | |
1283 | DBG1(DBG_IKE, "message verification failed"); | |
b4705269 | 1284 | send_notify(this, msg, PAYLOAD_MALFORMED); |
b235e69c TB |
1285 | break; |
1286 | case FAILED: | |
1287 | DBG1(DBG_IKE, "integrity check failed"); | |
b4705269 | 1288 | send_notify(this, msg, INVALID_HASH_INFORMATION); |
b235e69c TB |
1289 | break; |
1290 | case INVALID_STATE: | |
1291 | DBG1(DBG_IKE, "found encrypted message, but no keys available"); | |
b4705269 | 1292 | send_notify(this, msg, PAYLOAD_MALFORMED); |
b235e69c TB |
1293 | default: |
1294 | break; | |
1295 | } | |
f5ef3577 | 1296 | DBG1(DBG_IKE, "%N %s with message ID %u processing failed", |
b235e69c TB |
1297 | exchange_type_names, msg->get_exchange_type(msg), |
1298 | msg->get_request(msg) ? "request" : "response", | |
1299 | msg->get_message_id(msg)); | |
1300 | ||
418f4bc7 MW |
1301 | charon->bus->alert(charon->bus, ALERT_PARSE_ERROR_BODY, msg, status); |
1302 | ||
b235e69c TB |
1303 | if (this->ike_sa->get_state(this->ike_sa) == IKE_CREATED) |
1304 | { /* invalid initiation attempt, close SA */ | |
1305 | return DESTROY_ME; | |
1306 | } | |
1307 | } | |
30216000 | 1308 | |
3ecfc83c | 1309 | if (msg->get_first_payload_type(msg) == PLV1_FRAGMENT) |
30216000 TB |
1310 | { |
1311 | return handle_fragment(this, msg); | |
1312 | } | |
b235e69c TB |
1313 | return status; |
1314 | } | |
1315 | ||
3f56f731 TB |
1316 | /** |
1317 | * Queue the given message if possible | |
1318 | */ | |
1319 | static status_t queue_message(private_task_manager_t *this, message_t *msg) | |
1320 | { | |
1321 | if (this->queued) | |
1322 | { | |
1323 | DBG1(DBG_IKE, "ignoring %N request, queue full", | |
1324 | exchange_type_names, msg->get_exchange_type(msg)); | |
1325 | return FAILED; | |
1326 | } | |
1327 | this->queued = message_create_from_packet(msg->get_packet(msg)); | |
1328 | if (this->queued->parse_header(this->queued) != SUCCESS) | |
1329 | { | |
1330 | this->queued->destroy(this->queued); | |
1331 | this->queued = NULL; | |
1332 | return FAILED; | |
1333 | } | |
1334 | DBG1(DBG_IKE, "queueing %N request as tasks still active", | |
1335 | exchange_type_names, msg->get_exchange_type(msg)); | |
1336 | return SUCCESS; | |
1337 | } | |
1338 | ||
4a09d9ee MW |
1339 | METHOD(task_manager_t, process_message, status_t, |
1340 | private_task_manager_t *this, message_t *msg) | |
1341 | { | |
b12c53ce | 1342 | uint32_t hash, mid, i; |
3d59c5c3 | 1343 | host_t *me, *other; |
68c6863b | 1344 | status_t status; |
73aaf76b | 1345 | |
1960312c | 1346 | /* TODO-IKEv1: update hosts more selectively */ |
3d59c5c3 TB |
1347 | me = msg->get_destination(msg); |
1348 | other = msg->get_source(msg); | |
68c6863b | 1349 | mid = msg->get_message_id(msg); |
fce566a8 MW |
1350 | hash = chunk_hash(msg->get_packet_data(msg)); |
1351 | for (i = 0; i < MAX_OLD_HASHES; i++) | |
1352 | { | |
1353 | if (this->initiating.old_hashes[i] == hash) | |
1354 | { | |
127a98dc | 1355 | if (array_count(this->initiating.packets) && |
f5a84055 | 1356 | i == (this->initiating.old_hash_pos % MAX_OLD_HASHES) && |
346dad30 MW |
1357 | (msg->get_exchange_type(msg) == QUICK_MODE || |
1358 | msg->get_exchange_type(msg) == AGGRESSIVE)) | |
f5a84055 MW |
1359 | { |
1360 | DBG1(DBG_IKE, "received retransmit of response with ID %u, " | |
1361 | "resending last request", mid); | |
127a98dc | 1362 | send_packets(this, this->initiating.packets); |
f5a84055 MW |
1363 | return SUCCESS; |
1364 | } | |
fce566a8 MW |
1365 | DBG1(DBG_IKE, "received retransmit of response with ID %u, " |
1366 | "but next request already sent", mid); | |
1367 | return SUCCESS; | |
1368 | } | |
1369 | } | |
1960312c | 1370 | |
2ddd45c9 | 1371 | if ((mid && mid == this->initiating.mid) || |
73aaf76b | 1372 | (this->initiating.mid == 0 && |
1cc3e92c | 1373 | msg->get_exchange_type(msg) == this->initiating.type && |
dc8e9647 | 1374 | this->active_tasks->get_count(this->active_tasks))) |
4a09d9ee | 1375 | { |
7519106d | 1376 | msg->set_request(msg, FALSE); |
47b8f6ef | 1377 | charon->bus->message(charon->bus, msg, TRUE, FALSE); |
b235e69c | 1378 | status = parse_message(this, msg); |
30216000 TB |
1379 | if (status == NEED_MORE) |
1380 | { | |
1381 | return SUCCESS; | |
1382 | } | |
1960312c TB |
1383 | if (status != SUCCESS) |
1384 | { | |
1385 | return status; | |
1386 | } | |
1387 | this->ike_sa->set_statistic(this->ike_sa, STAT_INBOUND, | |
1388 | time_monotonic(NULL)); | |
3d59c5c3 | 1389 | this->ike_sa->update_hosts(this->ike_sa, me, other, TRUE); |
47b8f6ef | 1390 | charon->bus->message(charon->bus, msg, TRUE, TRUE); |
73aaf76b | 1391 | if (process_response(this, msg) != SUCCESS) |
4a09d9ee MW |
1392 | { |
1393 | flush(this); | |
1394 | return DESTROY_ME; | |
1395 | } | |
f5a84055 | 1396 | this->initiating.old_hashes[(++this->initiating.old_hash_pos) % |
fce566a8 | 1397 | MAX_OLD_HASHES] = hash; |
4a09d9ee MW |
1398 | } |
1399 | else | |
1400 | { | |
7b34de45 | 1401 | if (hash == this->responding.hash) |
73aaf76b | 1402 | { |
127a98dc | 1403 | if (array_count(this->responding.packets)) |
7b34de45 MW |
1404 | { |
1405 | DBG1(DBG_IKE, "received retransmit of request with ID %u, " | |
1406 | "retransmitting response", mid); | |
127a98dc | 1407 | send_packets(this, this->responding.packets); |
7b34de45 | 1408 | } |
127a98dc | 1409 | else if (array_count(this->initiating.packets) && |
1b82eb23 MW |
1410 | this->initiating.type == INFORMATIONAL_V1) |
1411 | { | |
1412 | DBG1(DBG_IKE, "received retransmit of DPD request, " | |
1413 | "retransmitting response"); | |
127a98dc | 1414 | send_packets(this, this->initiating.packets); |
1b82eb23 | 1415 | } |
7b34de45 MW |
1416 | else |
1417 | { | |
1418 | DBG1(DBG_IKE, "received retransmit of request with ID %u, " | |
1419 | "but no response to retransmit", mid); | |
1420 | } | |
3c79b7b7 | 1421 | charon->bus->alert(charon->bus, ALERT_RETRANSMIT_RECEIVE, msg); |
73aaf76b MW |
1422 | return SUCCESS; |
1423 | } | |
cdf75a39 | 1424 | |
cf95d292 | 1425 | /* reject Main/Aggressive Modes once established */ |
cdf75a39 MW |
1426 | if (msg->get_exchange_type(msg) == ID_PROT || |
1427 | msg->get_exchange_type(msg) == AGGRESSIVE) | |
1428 | { | |
1429 | if (this->ike_sa->get_state(this->ike_sa) != IKE_CREATED && | |
1430 | this->ike_sa->get_state(this->ike_sa) != IKE_CONNECTING && | |
3ecfc83c | 1431 | msg->get_first_payload_type(msg) != PLV1_FRAGMENT) |
cdf75a39 MW |
1432 | { |
1433 | DBG1(DBG_IKE, "ignoring %N in established IKE_SA state", | |
1434 | exchange_type_names, msg->get_exchange_type(msg)); | |
1435 | return FAILED; | |
1436 | } | |
1437 | } | |
1438 | ||
b0b0c913 | 1439 | /* drop XAuth/Mode Config/Quick Mode messages until we received the last |
1c8dfa30 TB |
1440 | * Aggressive Mode message. since Informational messages are not |
1441 | * retransmitted we queue them. */ | |
1b4e7fe1 | 1442 | if (have_task_queued(this, TASK_AGGRESSIVE_MODE)) |
b0b0c913 | 1443 | { |
1c8dfa30 TB |
1444 | if (msg->get_exchange_type(msg) == INFORMATIONAL_V1) |
1445 | { | |
1446 | return queue_message(this, msg); | |
1447 | } | |
1448 | else if (msg->get_exchange_type(msg) != AGGRESSIVE) | |
1449 | { | |
1450 | DBG1(DBG_IKE, "ignoring %N request while phase 1 is incomplete", | |
1451 | exchange_type_names, msg->get_exchange_type(msg)); | |
1452 | return FAILED; | |
1453 | } | |
b0b0c913 TB |
1454 | } |
1455 | ||
3f56f731 TB |
1456 | /* queue XAuth/Mode Config messages unless the Main Mode exchange we |
1457 | * initiated is complete */ | |
f91b6ac7 | 1458 | if (msg->get_exchange_type(msg) == TRANSACTION && |
0b0191e1 | 1459 | this->active_tasks->get_count(this->active_tasks)) |
3f56f731 TB |
1460 | { |
1461 | return queue_message(this, msg); | |
f91b6ac7 MW |
1462 | } |
1463 | ||
1b4e7fe1 TB |
1464 | /* some peers send INITIAL_CONTACT notifies during XAuth, cache it */ |
1465 | if (have_task_queued(this, TASK_XAUTH) && | |
1466 | msg->get_exchange_type(msg) == INFORMATIONAL_V1) | |
1467 | { | |
1468 | return queue_message(this, msg); | |
1469 | } | |
1470 | ||
7519106d | 1471 | msg->set_request(msg, TRUE); |
47b8f6ef | 1472 | charon->bus->message(charon->bus, msg, TRUE, FALSE); |
b235e69c | 1473 | status = parse_message(this, msg); |
30216000 TB |
1474 | if (status == NEED_MORE) |
1475 | { | |
1476 | return SUCCESS; | |
1477 | } | |
1960312c TB |
1478 | if (status != SUCCESS) |
1479 | { | |
1480 | return status; | |
1481 | } | |
1482 | /* if this IKE_SA is virgin, we check for a config */ | |
1483 | if (this->ike_sa->get_ike_cfg(this->ike_sa) == NULL) | |
1484 | { | |
1485 | ike_sa_id_t *ike_sa_id; | |
1486 | ike_cfg_t *ike_cfg; | |
1487 | job_t *job; | |
f5a84055 | 1488 | |
79101163 MW |
1489 | ike_cfg = charon->backends->get_ike_cfg(charon->backends, |
1490 | me, other, IKEV1); | |
1960312c TB |
1491 | if (ike_cfg == NULL) |
1492 | { | |
1493 | /* no config found for these hosts, destroy */ | |
4cfd0db8 TB |
1494 | DBG1(DBG_IKE, "no IKE config found for %H...%H, sending %N", |
1495 | me, other, notify_type_names, NO_PROPOSAL_CHOSEN); | |
b4705269 | 1496 | send_notify(this, msg, NO_PROPOSAL_CHOSEN); |
1960312c TB |
1497 | return DESTROY_ME; |
1498 | } | |
1499 | this->ike_sa->set_ike_cfg(this->ike_sa, ike_cfg); | |
1500 | ike_cfg->destroy(ike_cfg); | |
1501 | /* add a timeout if peer does not establish it completely */ | |
1502 | ike_sa_id = this->ike_sa->get_id(this->ike_sa); | |
1503 | job = (job_t*)delete_ike_sa_job_create(ike_sa_id, FALSE); | |
1504 | lib->scheduler->schedule_job(lib->scheduler, job, | |
1505 | lib->settings->get_int(lib->settings, | |
42500c27 | 1506 | "%s.half_open_timeout", HALF_OPEN_IKE_SA_TIMEOUT, |
d223fe80 | 1507 | lib->ns)); |
1960312c | 1508 | } |
3d59c5c3 | 1509 | this->ike_sa->update_hosts(this->ike_sa, me, other, TRUE); |
47b8f6ef | 1510 | charon->bus->message(charon->bus, msg, TRUE, TRUE); |
73aaf76b | 1511 | if (process_request(this, msg) != SUCCESS) |
26b55dc6 MW |
1512 | { |
1513 | flush(this); | |
1514 | return DESTROY_ME; | |
1515 | } | |
9cc8bd4f | 1516 | this->responding.hash = hash; |
4a09d9ee MW |
1517 | } |
1518 | return SUCCESS; | |
1519 | } | |
1520 | ||
8ed976c0 MW |
1521 | /** |
1522 | * Check if a given task has been queued already | |
1523 | */ | |
1524 | static bool has_queued(private_task_manager_t *this, task_type_t type) | |
1525 | { | |
1526 | enumerator_t *enumerator; | |
1527 | bool found = FALSE; | |
1528 | task_t *task; | |
1529 | ||
1530 | enumerator = this->queued_tasks->create_enumerator(this->queued_tasks); | |
1531 | while (enumerator->enumerate(enumerator, &task)) | |
1532 | { | |
1533 | if (task->get_type(task) == type) | |
1534 | { | |
1535 | found = TRUE; | |
1536 | break; | |
1537 | } | |
1538 | } | |
1539 | enumerator->destroy(enumerator); | |
1540 | return found; | |
1541 | } | |
1542 | ||
208678e6 TB |
1543 | METHOD(task_manager_t, queue_task_delayed, void, |
1544 | private_task_manager_t *this, task_t *task, uint32_t delay) | |
d4828f51 TB |
1545 | { |
1546 | task_type_t type = task->get_type(task); | |
1547 | ||
1548 | switch (type) | |
1549 | { | |
1550 | case TASK_MODE_CONFIG: | |
1551 | case TASK_XAUTH: | |
1552 | if (has_queued(this, type)) | |
1553 | { | |
1554 | task->destroy(task); | |
1555 | return; | |
1556 | } | |
1557 | break; | |
1558 | default: | |
1559 | break; | |
1560 | } | |
1561 | DBG2(DBG_IKE, "queueing %N task", task_type_names, task->get_type(task)); | |
1562 | this->queued_tasks->insert_last(this->queued_tasks, task); | |
1563 | } | |
1564 | ||
208678e6 TB |
1565 | METHOD(task_manager_t, queue_task, void, |
1566 | private_task_manager_t *this, task_t *task) | |
1567 | { | |
1568 | queue_task_delayed(this, task, 0); | |
1569 | } | |
1570 | ||
a60daa07 MW |
1571 | METHOD(task_manager_t, queue_ike, void, |
1572 | private_task_manager_t *this) | |
1573 | { | |
830ab2ae MW |
1574 | peer_cfg_t *peer_cfg; |
1575 | ||
8ed976c0 MW |
1576 | if (!has_queued(this, TASK_ISAKMP_VENDOR)) |
1577 | { | |
1578 | queue_task(this, (task_t*)isakmp_vendor_create(this->ike_sa, TRUE)); | |
1579 | } | |
1580 | if (!has_queued(this, TASK_ISAKMP_CERT_PRE)) | |
1581 | { | |
1582 | queue_task(this, (task_t*)isakmp_cert_pre_create(this->ike_sa, TRUE)); | |
1583 | } | |
830ab2ae MW |
1584 | peer_cfg = this->ike_sa->get_peer_cfg(this->ike_sa); |
1585 | if (peer_cfg->use_aggressive(peer_cfg)) | |
8ed976c0 | 1586 | { |
830ab2ae MW |
1587 | if (!has_queued(this, TASK_AGGRESSIVE_MODE)) |
1588 | { | |
1589 | queue_task(this, (task_t*)aggressive_mode_create(this->ike_sa, TRUE)); | |
1590 | } | |
1591 | } | |
1592 | else | |
1593 | { | |
1594 | if (!has_queued(this, TASK_MAIN_MODE)) | |
1595 | { | |
1596 | queue_task(this, (task_t*)main_mode_create(this->ike_sa, TRUE)); | |
1597 | } | |
8ed976c0 MW |
1598 | } |
1599 | if (!has_queued(this, TASK_ISAKMP_CERT_POST)) | |
1600 | { | |
1601 | queue_task(this, (task_t*)isakmp_cert_post_create(this->ike_sa, TRUE)); | |
1602 | } | |
1603 | if (!has_queued(this, TASK_ISAKMP_NATD)) | |
1604 | { | |
1605 | queue_task(this, (task_t*)isakmp_natd_create(this->ike_sa, TRUE)); | |
1606 | } | |
a60daa07 MW |
1607 | } |
1608 | ||
4f49b068 | 1609 | METHOD(task_manager_t, queue_ike_reauth, void, |
dab60d64 MW |
1610 | private_task_manager_t *this) |
1611 | { | |
4f49b068 MW |
1612 | enumerator_t *enumerator; |
1613 | child_sa_t *child_sa; | |
1614 | ike_sa_t *new; | |
1615 | host_t *host; | |
1616 | ||
1617 | new = charon->ike_sa_manager->checkout_new(charon->ike_sa_manager, | |
1618 | this->ike_sa->get_version(this->ike_sa), TRUE); | |
1619 | if (!new) | |
1620 | { /* shouldn't happen */ | |
1621 | return; | |
1622 | } | |
1623 | ||
1624 | new->set_peer_cfg(new, this->ike_sa->get_peer_cfg(this->ike_sa)); | |
1625 | host = this->ike_sa->get_other_host(this->ike_sa); | |
1626 | new->set_other_host(new, host->clone(host)); | |
1627 | host = this->ike_sa->get_my_host(this->ike_sa); | |
1628 | new->set_my_host(new, host->clone(host)); | |
101d26ba MW |
1629 | enumerator = this->ike_sa->create_virtual_ip_enumerator(this->ike_sa, TRUE); |
1630 | while (enumerator->enumerate(enumerator, &host)) | |
4f49b068 | 1631 | { |
101d26ba | 1632 | new->add_virtual_ip(new, TRUE, host); |
4f49b068 | 1633 | } |
101d26ba | 1634 | enumerator->destroy(enumerator); |
4f49b068 | 1635 | |
6a9a69ae TB |
1636 | charon->bus->children_migrate(charon->bus, new->get_id(new), |
1637 | new->get_unique_id(new)); | |
4f49b068 MW |
1638 | enumerator = this->ike_sa->create_child_sa_enumerator(this->ike_sa); |
1639 | while (enumerator->enumerate(enumerator, &child_sa)) | |
1640 | { | |
1641 | this->ike_sa->remove_child_sa(this->ike_sa, enumerator); | |
1642 | new->add_child_sa(new, child_sa); | |
1643 | } | |
1644 | enumerator->destroy(enumerator); | |
6a9a69ae TB |
1645 | charon->bus->set_sa(charon->bus, new); |
1646 | charon->bus->children_migrate(charon->bus, NULL, 0); | |
1647 | charon->bus->set_sa(charon->bus, this->ike_sa); | |
4f49b068 | 1648 | |
8254e7ec TB |
1649 | if (!new->get_child_count(new)) |
1650 | { /* check if a Quick Mode task is queued (UNITY_LOAD_BALANCE case) */ | |
1651 | task_t *task; | |
1652 | ||
1653 | enumerator = this->queued_tasks->create_enumerator(this->queued_tasks); | |
1654 | while (enumerator->enumerate(enumerator, &task)) | |
1655 | { | |
1656 | if (task->get_type(task) == TASK_QUICK_MODE) | |
1657 | { | |
1658 | this->queued_tasks->remove_at(this->queued_tasks, enumerator); | |
1659 | task->migrate(task, new); | |
1660 | new->queue_task(new, task); | |
1661 | } | |
1662 | } | |
1663 | enumerator->destroy(enumerator); | |
1664 | } | |
1665 | ||
4f49b068 MW |
1666 | if (new->initiate(new, NULL, 0, NULL, NULL) != DESTROY_ME) |
1667 | { | |
1668 | charon->ike_sa_manager->checkin(charon->ike_sa_manager, new); | |
1b79299b | 1669 | this->ike_sa->set_state(this->ike_sa, IKE_REKEYING); |
4f49b068 MW |
1670 | } |
1671 | else | |
1672 | { | |
1673 | charon->ike_sa_manager->checkin_and_destroy(charon->ike_sa_manager, new); | |
1674 | DBG1(DBG_IKE, "reauthenticating IKE_SA failed"); | |
1675 | } | |
1676 | charon->bus->set_sa(charon->bus, this->ike_sa); | |
dab60d64 MW |
1677 | } |
1678 | ||
4f49b068 | 1679 | METHOD(task_manager_t, queue_ike_rekey, void, |
cedb412e MW |
1680 | private_task_manager_t *this) |
1681 | { | |
4f49b068 | 1682 | queue_ike_reauth(this); |
cedb412e MW |
1683 | } |
1684 | ||
3ed148b3 MW |
1685 | METHOD(task_manager_t, queue_ike_delete, void, |
1686 | private_task_manager_t *this) | |
1687 | { | |
daee47ba MW |
1688 | enumerator_t *enumerator; |
1689 | child_sa_t *child_sa; | |
1690 | ||
60d0f52f TB |
1691 | /* cancel any currently active task to get the DELETE done quickly */ |
1692 | flush_queue(this, TASK_QUEUE_ACTIVE); | |
1693 | ||
daee47ba MW |
1694 | enumerator = this->ike_sa->create_child_sa_enumerator(this->ike_sa); |
1695 | while (enumerator->enumerate(enumerator, &child_sa)) | |
1696 | { | |
1697 | queue_task(this, (task_t*) | |
1698 | quick_delete_create(this->ike_sa, child_sa->get_protocol(child_sa), | |
3a925f74 | 1699 | child_sa->get_spi(child_sa, TRUE), FALSE, FALSE)); |
daee47ba MW |
1700 | } |
1701 | enumerator->destroy(enumerator); | |
1702 | ||
3ed148b3 MW |
1703 | queue_task(this, (task_t*)isakmp_delete_create(this->ike_sa, TRUE)); |
1704 | } | |
1705 | ||
873df908 MW |
1706 | METHOD(task_manager_t, queue_mobike, void, |
1707 | private_task_manager_t *this, bool roam, bool address) | |
1708 | { | |
1709 | /* Not supported in IKEv1 */ | |
1710 | } | |
1711 | ||
fe43d9a2 | 1712 | METHOD(task_manager_t, queue_child, void, |
b12c53ce | 1713 | private_task_manager_t *this, child_cfg_t *cfg, uint32_t reqid, |
fe43d9a2 MW |
1714 | traffic_selector_t *tsi, traffic_selector_t *tsr) |
1715 | { | |
14dc7941 MW |
1716 | quick_mode_t *task; |
1717 | ||
1718 | task = quick_mode_create(this->ike_sa, cfg, tsi, tsr); | |
1719 | task->use_reqid(task, reqid); | |
1720 | ||
1721 | queue_task(this, &task->task); | |
fe43d9a2 MW |
1722 | } |
1723 | ||
2d4c347a MW |
1724 | /** |
1725 | * Check if two CHILD_SAs have the same traffic selector | |
1726 | */ | |
553bb787 | 1727 | static bool have_equal_ts(child_sa_t *child1, child_sa_t *child2, bool local) |
2d4c347a | 1728 | { |
553bb787 MW |
1729 | enumerator_t *e1, *e2; |
1730 | traffic_selector_t *ts1, *ts2; | |
1731 | bool equal = FALSE; | |
2d4c347a | 1732 | |
553bb787 MW |
1733 | e1 = child1->create_ts_enumerator(child1, local); |
1734 | e2 = child2->create_ts_enumerator(child2, local); | |
1735 | if (e1->enumerate(e1, &ts1) && e2->enumerate(e2, &ts2)) | |
2d4c347a | 1736 | { |
553bb787 | 1737 | equal = ts1->equals(ts1, ts2); |
2d4c347a | 1738 | } |
fafa7684 | 1739 | e2->destroy(e2); |
553bb787 MW |
1740 | e1->destroy(e1); |
1741 | ||
1742 | return equal; | |
2d4c347a MW |
1743 | } |
1744 | ||
1e24fa46 MW |
1745 | /** |
1746 | * Check if a CHILD_SA is redundant and we should delete instead of rekey | |
1747 | */ | |
1748 | static bool is_redundant(private_task_manager_t *this, child_sa_t *child_sa) | |
1749 | { | |
1750 | enumerator_t *enumerator; | |
1751 | child_sa_t *current; | |
1752 | bool redundant = FALSE; | |
1753 | ||
1754 | enumerator = this->ike_sa->create_child_sa_enumerator(this->ike_sa); | |
1755 | while (enumerator->enumerate(enumerator, ¤t)) | |
1756 | { | |
1757 | if (current->get_state(current) == CHILD_INSTALLED && | |
1758 | streq(current->get_name(current), child_sa->get_name(child_sa)) && | |
2d4c347a MW |
1759 | have_equal_ts(current, child_sa, TRUE) && |
1760 | have_equal_ts(current, child_sa, FALSE) && | |
1e24fa46 MW |
1761 | current->get_lifetime(current, FALSE) > |
1762 | child_sa->get_lifetime(child_sa, FALSE)) | |
1763 | { | |
1764 | DBG1(DBG_IKE, "deleting redundant CHILD_SA %s{%d}", | |
246c969d MW |
1765 | child_sa->get_name(child_sa), |
1766 | child_sa->get_unique_id(child_sa)); | |
1e24fa46 MW |
1767 | redundant = TRUE; |
1768 | break; | |
1769 | } | |
1770 | } | |
1771 | enumerator->destroy(enumerator); | |
1772 | ||
1773 | return redundant; | |
1774 | } | |
1775 | ||
7a5f372c MW |
1776 | /** |
1777 | * Get the first traffic selector of a CHILD_SA, local or remote | |
1778 | */ | |
1779 | static traffic_selector_t* get_first_ts(child_sa_t *child_sa, bool local) | |
1780 | { | |
1781 | traffic_selector_t *ts = NULL; | |
553bb787 | 1782 | enumerator_t *enumerator; |
7a5f372c | 1783 | |
553bb787 MW |
1784 | enumerator = child_sa->create_ts_enumerator(child_sa, local); |
1785 | enumerator->enumerate(enumerator, &ts); | |
1786 | enumerator->destroy(enumerator); | |
1787 | ||
1788 | return ts; | |
7a5f372c MW |
1789 | } |
1790 | ||
463a73cc | 1791 | METHOD(task_manager_t, queue_child_rekey, void, |
b12c53ce | 1792 | private_task_manager_t *this, protocol_id_t protocol, uint32_t spi) |
463a73cc | 1793 | { |
23eb447c MW |
1794 | child_sa_t *child_sa; |
1795 | child_cfg_t *cfg; | |
1796 | quick_mode_t *task; | |
1797 | ||
1798 | child_sa = this->ike_sa->get_child_sa(this->ike_sa, protocol, spi, TRUE); | |
1799 | if (!child_sa) | |
1800 | { | |
1801 | child_sa = this->ike_sa->get_child_sa(this->ike_sa, protocol, spi, FALSE); | |
1802 | } | |
1803 | if (child_sa && child_sa->get_state(child_sa) == CHILD_INSTALLED) | |
1804 | { | |
1e24fa46 MW |
1805 | if (is_redundant(this, child_sa)) |
1806 | { | |
a01eb5e4 | 1807 | child_sa->set_state(child_sa, CHILD_REKEYED); |
083208e8 TB |
1808 | if (lib->settings->get_bool(lib->settings, "%s.delete_rekeyed", |
1809 | FALSE, lib->ns)) | |
1810 | { | |
1811 | queue_task(this, (task_t*)quick_delete_create(this->ike_sa, | |
1e24fa46 | 1812 | protocol, spi, FALSE, FALSE)); |
083208e8 | 1813 | } |
1e24fa46 MW |
1814 | } |
1815 | else | |
1816 | { | |
1817 | child_sa->set_state(child_sa, CHILD_REKEYING); | |
1818 | cfg = child_sa->get_config(child_sa); | |
7a5f372c MW |
1819 | task = quick_mode_create(this->ike_sa, cfg->get_ref(cfg), |
1820 | get_first_ts(child_sa, TRUE), get_first_ts(child_sa, FALSE)); | |
1e24fa46 | 1821 | task->use_reqid(task, child_sa->get_reqid(child_sa)); |
85b23888 MW |
1822 | task->use_marks(task, child_sa->get_mark(child_sa, TRUE).value, |
1823 | child_sa->get_mark(child_sa, FALSE).value); | |
1e24fa46 | 1824 | task->rekey(task, child_sa->get_spi(child_sa, TRUE)); |
23eb447c | 1825 | |
1e24fa46 MW |
1826 | queue_task(this, &task->task); |
1827 | } | |
23eb447c | 1828 | } |
463a73cc MW |
1829 | } |
1830 | ||
83c5fda0 | 1831 | METHOD(task_manager_t, queue_child_delete, void, |
b12c53ce | 1832 | private_task_manager_t *this, protocol_id_t protocol, uint32_t spi, |
3a925f74 | 1833 | bool expired) |
83c5fda0 MW |
1834 | { |
1835 | queue_task(this, (task_t*)quick_delete_create(this->ike_sa, protocol, | |
3a925f74 | 1836 | spi, FALSE, expired)); |
83c5fda0 MW |
1837 | } |
1838 | ||
244d715d MW |
1839 | METHOD(task_manager_t, queue_dpd, void, |
1840 | private_task_manager_t *this) | |
1841 | { | |
80c5b17d | 1842 | peer_cfg_t *peer_cfg; |
b12c53ce | 1843 | uint32_t t, retransmit; |
4b38c22c | 1844 | |
24742c0f | 1845 | queue_task(this, (task_t*)isakmp_dpd_create(this->ike_sa, DPD_R_U_THERE, |
2ddd45c9 | 1846 | this->dpd_send++)); |
80c5b17d | 1847 | peer_cfg = this->ike_sa->get_peer_cfg(this->ike_sa); |
4b38c22c | 1848 | |
80c5b17d AS |
1849 | /* compute timeout in milliseconds */ |
1850 | t = 1000 * peer_cfg->get_dpd_timeout(peer_cfg); | |
1851 | if (t == 0) | |
4b38c22c | 1852 | { |
80c5b17d AS |
1853 | /* use the same timeout as a retransmitting IKE message would have */ |
1854 | for (retransmit = 0; retransmit <= this->retransmit_tries; retransmit++) | |
1855 | { | |
b12c53ce | 1856 | t += (uint32_t)(this->retransmit_timeout * 1000.0 * |
80c5b17d AS |
1857 | pow(this->retransmit_base, retransmit)); |
1858 | } | |
4b38c22c | 1859 | } |
747b6487 TB |
1860 | /* compensate for the already elapsed dpd delay */ |
1861 | t -= 1000 * peer_cfg->get_dpd(peer_cfg); | |
80c5b17d AS |
1862 | |
1863 | /* schedule DPD timeout job */ | |
4b38c22c MW |
1864 | lib->scheduler->schedule_job_ms(lib->scheduler, |
1865 | (job_t*)dpd_timeout_job_create(this->ike_sa->get_id(this->ike_sa)), t); | |
244d715d MW |
1866 | } |
1867 | ||
4a09d9ee MW |
1868 | METHOD(task_manager_t, adopt_tasks, void, |
1869 | private_task_manager_t *this, task_manager_t *other_public) | |
1870 | { | |
1871 | private_task_manager_t *other = (private_task_manager_t*)other_public; | |
1872 | task_t *task; | |
1873 | ||
1874 | /* move queued tasks from other to this */ | |
1875 | while (other->queued_tasks->remove_last(other->queued_tasks, | |
1876 | (void**)&task) == SUCCESS) | |
1877 | { | |
1878 | DBG2(DBG_IKE, "migrating %N task", task_type_names, task->get_type(task)); | |
1879 | task->migrate(task, this->ike_sa); | |
1880 | this->queued_tasks->insert_first(this->queued_tasks, task); | |
1881 | } | |
1882 | } | |
1883 | ||
68db844f TB |
1884 | /** |
1885 | * Migrates child-creating tasks from src to dst | |
1886 | */ | |
1887 | static void migrate_child_tasks(private_task_manager_t *this, | |
1888 | linked_list_t *src, linked_list_t *dst) | |
1889 | { | |
1890 | enumerator_t *enumerator; | |
1891 | task_t *task; | |
1892 | ||
1893 | enumerator = src->create_enumerator(src); | |
1894 | while (enumerator->enumerate(enumerator, &task)) | |
1895 | { | |
1896 | if (task->get_type(task) == TASK_QUICK_MODE) | |
1897 | { | |
1898 | src->remove_at(src, enumerator); | |
1899 | task->migrate(task, this->ike_sa); | |
1900 | dst->insert_last(dst, task); | |
1901 | } | |
1902 | } | |
1903 | enumerator->destroy(enumerator); | |
1904 | } | |
1905 | ||
1906 | METHOD(task_manager_t, adopt_child_tasks, void, | |
1907 | private_task_manager_t *this, task_manager_t *other_public) | |
1908 | { | |
1909 | private_task_manager_t *other = (private_task_manager_t*)other_public; | |
1910 | ||
1911 | /* move active child tasks from other to this */ | |
1912 | migrate_child_tasks(this, other->active_tasks, this->queued_tasks); | |
1913 | /* do the same for queued tasks */ | |
1914 | migrate_child_tasks(this, other->queued_tasks, this->queued_tasks); | |
1915 | } | |
1916 | ||
4a09d9ee MW |
1917 | METHOD(task_manager_t, busy, bool, |
1918 | private_task_manager_t *this) | |
1919 | { | |
1920 | return (this->active_tasks->get_count(this->active_tasks) > 0); | |
1921 | } | |
1922 | ||
1923 | METHOD(task_manager_t, incr_mid, void, | |
1924 | private_task_manager_t *this, bool initiate) | |
1925 | { | |
4a09d9ee MW |
1926 | } |
1927 | ||
05a2be82 TB |
1928 | METHOD(task_manager_t, get_mid, uint32_t, |
1929 | private_task_manager_t *this, bool initiate) | |
1930 | { | |
1931 | return initiate ? this->initiating.mid : this->responding.mid; | |
1932 | } | |
1933 | ||
4a09d9ee | 1934 | METHOD(task_manager_t, reset, void, |
b12c53ce | 1935 | private_task_manager_t *this, uint32_t initiate, uint32_t respond) |
4a09d9ee | 1936 | { |
d9c1dae2 MW |
1937 | enumerator_t *enumerator; |
1938 | task_t *task; | |
1939 | ||
1940 | /* reset message counters and retransmit packets */ | |
127a98dc TB |
1941 | clear_packets(this->responding.packets); |
1942 | clear_packets(this->initiating.packets); | |
f5a84055 MW |
1943 | this->responding.seqnr = RESPONDING_SEQ; |
1944 | this->responding.retransmitted = 0; | |
d9c1dae2 MW |
1945 | this->initiating.mid = 0; |
1946 | this->initiating.seqnr = 0; | |
1947 | this->initiating.retransmitted = 0; | |
1948 | this->initiating.type = EXCHANGE_TYPE_UNDEFINED; | |
70e0be07 TB |
1949 | DESTROY_IF(this->defrag); |
1950 | this->defrag = NULL; | |
fd6fbf17 MW |
1951 | if (initiate != UINT_MAX) |
1952 | { | |
1953 | this->dpd_send = initiate; | |
1954 | } | |
1955 | if (respond != UINT_MAX) | |
1956 | { | |
1957 | this->dpd_recv = respond; | |
1958 | } | |
d9c1dae2 MW |
1959 | |
1960 | /* reset queued tasks */ | |
1961 | enumerator = this->queued_tasks->create_enumerator(this->queued_tasks); | |
1962 | while (enumerator->enumerate(enumerator, &task)) | |
1963 | { | |
1964 | task->migrate(task, this->ike_sa); | |
1965 | } | |
1966 | enumerator->destroy(enumerator); | |
1967 | ||
1968 | /* reset active tasks */ | |
1969 | while (this->active_tasks->remove_last(this->active_tasks, | |
1970 | (void**)&task) == SUCCESS) | |
1971 | { | |
1972 | task->migrate(task, this->ike_sa); | |
1973 | this->queued_tasks->insert_first(this->queued_tasks, task); | |
1974 | } | |
4a09d9ee MW |
1975 | } |
1976 | ||
1977 | METHOD(task_manager_t, create_task_enumerator, enumerator_t*, | |
1978 | private_task_manager_t *this, task_queue_t queue) | |
1979 | { | |
1980 | switch (queue) | |
1981 | { | |
1982 | case TASK_QUEUE_ACTIVE: | |
1983 | return this->active_tasks->create_enumerator(this->active_tasks); | |
1984 | case TASK_QUEUE_PASSIVE: | |
1985 | return this->passive_tasks->create_enumerator(this->passive_tasks); | |
1986 | case TASK_QUEUE_QUEUED: | |
1987 | return this->queued_tasks->create_enumerator(this->queued_tasks); | |
1988 | default: | |
1989 | return enumerator_create_empty(); | |
1990 | } | |
1991 | } | |
1992 | ||
1993 | METHOD(task_manager_t, destroy, void, | |
1994 | private_task_manager_t *this) | |
1995 | { | |
1996 | flush(this); | |
1997 | ||
1998 | this->active_tasks->destroy(this->active_tasks); | |
1999 | this->queued_tasks->destroy(this->queued_tasks); | |
2000 | this->passive_tasks->destroy(this->passive_tasks); | |
70e0be07 | 2001 | DESTROY_IF(this->defrag); |
4a09d9ee | 2002 | |
f91b6ac7 | 2003 | DESTROY_IF(this->queued); |
127a98dc TB |
2004 | clear_packets(this->responding.packets); |
2005 | array_destroy(this->responding.packets); | |
2006 | clear_packets(this->initiating.packets); | |
2007 | array_destroy(this->initiating.packets); | |
73aaf76b | 2008 | DESTROY_IF(this->rng); |
4a09d9ee MW |
2009 | free(this); |
2010 | } | |
2011 | ||
2012 | /* | |
2013 | * see header file | |
2014 | */ | |
2015 | task_manager_v1_t *task_manager_v1_create(ike_sa_t *ike_sa) | |
2016 | { | |
2017 | private_task_manager_t *this; | |
2018 | ||
2019 | INIT(this, | |
2020 | .public = { | |
2021 | .task_manager = { | |
2022 | .process_message = _process_message, | |
2023 | .queue_task = _queue_task, | |
208678e6 | 2024 | .queue_task_delayed = _queue_task_delayed, |
a60daa07 | 2025 | .queue_ike = _queue_ike, |
dab60d64 | 2026 | .queue_ike_rekey = _queue_ike_rekey, |
cedb412e | 2027 | .queue_ike_reauth = _queue_ike_reauth, |
3ed148b3 | 2028 | .queue_ike_delete = _queue_ike_delete, |
873df908 | 2029 | .queue_mobike = _queue_mobike, |
fe43d9a2 | 2030 | .queue_child = _queue_child, |
463a73cc | 2031 | .queue_child_rekey = _queue_child_rekey, |
83c5fda0 | 2032 | .queue_child_delete = _queue_child_delete, |
244d715d | 2033 | .queue_dpd = _queue_dpd, |
4a09d9ee MW |
2034 | .initiate = _initiate, |
2035 | .retransmit = _retransmit, | |
2036 | .incr_mid = _incr_mid, | |
05a2be82 | 2037 | .get_mid = _get_mid, |
4a09d9ee MW |
2038 | .reset = _reset, |
2039 | .adopt_tasks = _adopt_tasks, | |
68db844f | 2040 | .adopt_child_tasks = _adopt_child_tasks, |
4a09d9ee MW |
2041 | .busy = _busy, |
2042 | .create_task_enumerator = _create_task_enumerator, | |
b1908994 | 2043 | .flush = _flush, |
a5c79960 | 2044 | .flush_queue = _flush_queue, |
4a09d9ee MW |
2045 | .destroy = _destroy, |
2046 | }, | |
2047 | }, | |
dcbdc914 TB |
2048 | .initiating = { |
2049 | .type = EXCHANGE_TYPE_UNDEFINED, | |
2050 | }, | |
2051 | .responding = { | |
2052 | .seqnr = RESPONDING_SEQ, | |
2053 | }, | |
4a09d9ee | 2054 | .ike_sa = ike_sa, |
73aaf76b | 2055 | .rng = lib->crypto->create_rng(lib->crypto, RNG_WEAK), |
4a09d9ee MW |
2056 | .queued_tasks = linked_list_create(), |
2057 | .active_tasks = linked_list_create(), | |
2058 | .passive_tasks = linked_list_create(), | |
2059 | .retransmit_tries = lib->settings->get_int(lib->settings, | |
389e4b8e | 2060 | "%s.retransmit_tries", RETRANSMIT_TRIES, lib->ns), |
4a09d9ee | 2061 | .retransmit_timeout = lib->settings->get_double(lib->settings, |
389e4b8e | 2062 | "%s.retransmit_timeout", RETRANSMIT_TIMEOUT, lib->ns), |
4a09d9ee | 2063 | .retransmit_base = lib->settings->get_double(lib->settings, |
389e4b8e TB |
2064 | "%s.retransmit_base", RETRANSMIT_BASE, lib->ns), |
2065 | .retransmit_jitter = min(lib->settings->get_int(lib->settings, | |
2066 | "%s.retransmit_jitter", 0, lib->ns), RETRANSMIT_JITTER_MAX), | |
2067 | .retransmit_limit = lib->settings->get_int(lib->settings, | |
2068 | "%s.retransmit_limit", 0, lib->ns) * 1000, | |
4a09d9ee MW |
2069 | ); |
2070 | ||
3fca5bd1 MW |
2071 | if (!this->rng) |
2072 | { | |
2073 | DBG1(DBG_IKE, "no RNG found, unable to create IKE_SA"); | |
2074 | destroy(this); | |
2075 | return NULL; | |
2076 | } | |
1bb9c51e TB |
2077 | if (!this->rng->get_bytes(this->rng, sizeof(this->dpd_send), |
2078 | (void*)&this->dpd_send)) | |
2079 | { | |
2080 | DBG1(DBG_IKE, "failed to allocate message ID, unable to create IKE_SA"); | |
2081 | destroy(this); | |
2082 | return NULL; | |
2083 | } | |
2ddd45c9 | 2084 | this->dpd_send &= 0x7FFFFFFF; |
3e6b7403 | 2085 | |
4a09d9ee MW |
2086 | return &this->public; |
2087 | } |