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c60c7694 | 1 | /* |
b92f11c3 | 2 | * Copyright (C) 2008-2016 Tobias Brunner |
6a4ff35c | 3 | * Copyright (C) 2005-2008 Martin Willi |
c60c7694 | 4 | * Copyright (C) 2005 Jan Hutter |
b92f11c3 | 5 | * HSR Hochschule fuer Technik Rapperswil |
c60c7694 MW |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
14 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | * for more details. | |
16 | */ | |
17 | ||
18 | #include "child_create.h" | |
19 | ||
20 | #include <daemon.h> | |
15a682f4 | 21 | #include <sa/ikev2/keymat_v2.h> |
c60c7694 | 22 | #include <crypto/diffie_hellman.h> |
d002c623 | 23 | #include <credentials/certificates/x509.h> |
c60c7694 | 24 | #include <encoding/payloads/sa_payload.h> |
1fd5383e | 25 | #include <encoding/payloads/ke_payload.h> |
c60c7694 MW |
26 | #include <encoding/payloads/ts_payload.h> |
27 | #include <encoding/payloads/nonce_payload.h> | |
28 | #include <encoding/payloads/notify_payload.h> | |
e196c41b | 29 | #include <encoding/payloads/delete_payload.h> |
866ba8e0 | 30 | #include <processing/jobs/delete_ike_sa_job.h> |
aa9eeb5d | 31 | #include <processing/jobs/inactivity_job.h> |
b92f11c3 | 32 | #include <processing/jobs/initiate_tasks_job.h> |
c60c7694 MW |
33 | |
34 | typedef struct private_child_create_t private_child_create_t; | |
35 | ||
36 | /** | |
37 | * Private members of a child_create_t task. | |
38 | */ | |
39 | struct private_child_create_t { | |
7daf5226 | 40 | |
c60c7694 MW |
41 | /** |
42 | * Public methods and task_t interface. | |
43 | */ | |
44 | child_create_t public; | |
7daf5226 | 45 | |
c60c7694 MW |
46 | /** |
47 | * Assigned IKE_SA. | |
48 | */ | |
49 | ike_sa_t *ike_sa; | |
7daf5226 | 50 | |
c60c7694 MW |
51 | /** |
52 | * Are we the initiator? | |
53 | */ | |
54 | bool initiator; | |
7daf5226 | 55 | |
c60c7694 MW |
56 | /** |
57 | * nonce chosen by us | |
58 | */ | |
59 | chunk_t my_nonce; | |
7daf5226 | 60 | |
c60c7694 MW |
61 | /** |
62 | * nonce chosen by peer | |
63 | */ | |
64 | chunk_t other_nonce; | |
7daf5226 | 65 | |
72376234 RB |
66 | /** |
67 | * nonce generator | |
68 | */ | |
69 | nonce_gen_t *nonceg; | |
70 | ||
c60c7694 | 71 | /** |
e0fe7651 | 72 | * config to create the CHILD_SA from |
c60c7694 | 73 | */ |
e0fe7651 | 74 | child_cfg_t *config; |
7daf5226 | 75 | |
c60c7694 MW |
76 | /** |
77 | * list of proposal candidates | |
78 | */ | |
79 | linked_list_t *proposals; | |
7daf5226 | 80 | |
c60c7694 MW |
81 | /** |
82 | * selected proposal to use for CHILD_SA | |
83 | */ | |
84 | proposal_t *proposal; | |
7daf5226 | 85 | |
c60c7694 MW |
86 | /** |
87 | * traffic selectors for initiators side | |
88 | */ | |
89 | linked_list_t *tsi; | |
7daf5226 | 90 | |
c60c7694 MW |
91 | /** |
92 | * traffic selectors for responders side | |
93 | */ | |
94 | linked_list_t *tsr; | |
7daf5226 | 95 | |
a13c013b MW |
96 | /** |
97 | * source of triggering packet | |
98 | */ | |
99 | traffic_selector_t *packet_tsi; | |
7daf5226 | 100 | |
a13c013b MW |
101 | /** |
102 | * destination of triggering packet | |
103 | */ | |
104 | traffic_selector_t *packet_tsr; | |
7daf5226 | 105 | |
1fd5383e MW |
106 | /** |
107 | * optional diffie hellman exchange | |
108 | */ | |
109 | diffie_hellman_t *dh; | |
7daf5226 | 110 | |
a777155f MW |
111 | /** |
112 | * Applying DH public value failed? | |
113 | */ | |
114 | bool dh_failed; | |
115 | ||
1fd5383e MW |
116 | /** |
117 | * group used for DH exchange | |
118 | */ | |
119 | diffie_hellman_group_t dh_group; | |
7daf5226 | 120 | |
80853d84 MW |
121 | /** |
122 | * IKE_SAs keymat | |
123 | */ | |
a0563846 | 124 | keymat_v2_t *keymat; |
7daf5226 | 125 | |
c60c7694 MW |
126 | /** |
127 | * mode the new CHILD_SA uses (transport/tunnel/beet) | |
128 | */ | |
a341a68f | 129 | ipsec_mode_t mode; |
7daf5226 | 130 | |
55df72e6 MW |
131 | /** |
132 | * peer accepts TFC padding for this SA | |
133 | */ | |
134 | bool tfcv3; | |
135 | ||
d4aad554 TB |
136 | /** |
137 | * IPComp transform to use | |
138 | */ | |
139 | ipcomp_transform_t ipcomp; | |
7daf5226 | 140 | |
d4aad554 TB |
141 | /** |
142 | * IPComp transform proposed or accepted by the other peer | |
143 | */ | |
144 | ipcomp_transform_t ipcomp_received; | |
7daf5226 | 145 | |
f91bd4b9 TB |
146 | /** |
147 | * IPsec protocol | |
148 | */ | |
149 | protocol_id_t proto; | |
150 | ||
d4aad554 | 151 | /** |
3aaf7908 MW |
152 | * Own allocated SPI |
153 | */ | |
b12c53ce | 154 | uint32_t my_spi; |
7daf5226 | 155 | |
3aaf7908 MW |
156 | /** |
157 | * SPI received in proposal | |
158 | */ | |
b12c53ce | 159 | uint32_t other_spi; |
7daf5226 | 160 | |
3aaf7908 MW |
161 | /** |
162 | * Own allocated Compression Parameter Index (CPI) | |
163 | */ | |
b12c53ce | 164 | uint16_t my_cpi; |
7daf5226 | 165 | |
3aaf7908 MW |
166 | /** |
167 | * Other Compression Parameter Index (CPI), received via IPCOMP_SUPPORTED | |
d4aad554 | 168 | */ |
b12c53ce | 169 | uint16_t other_cpi; |
7daf5226 | 170 | |
c60c7694 MW |
171 | /** |
172 | * reqid to use if we are rekeying | |
173 | */ | |
b12c53ce | 174 | uint32_t reqid; |
7daf5226 | 175 | |
85b23888 MW |
176 | /** |
177 | * Explicit inbound mark value | |
178 | */ | |
179 | u_int mark_in; | |
180 | ||
181 | /** | |
182 | * Explicit outbound mark value | |
183 | */ | |
184 | u_int mark_out; | |
185 | ||
c60c7694 MW |
186 | /** |
187 | * CHILD_SA which gets established | |
188 | */ | |
189 | child_sa_t *child_sa; | |
7daf5226 | 190 | |
195ada0b MW |
191 | /** |
192 | * successfully established the CHILD? | |
193 | */ | |
194 | bool established; | |
7daf5226 | 195 | |
f669f453 MW |
196 | /** |
197 | * whether the CHILD_SA rekeys an existing one | |
198 | */ | |
199 | bool rekey; | |
82ad53b7 MW |
200 | |
201 | /** | |
202 | * whether we are retrying with another DH group | |
203 | */ | |
204 | bool retry; | |
c60c7694 MW |
205 | }; |
206 | ||
b92f11c3 TB |
207 | /** |
208 | * Schedule a retry if creating the CHILD_SA temporary failed | |
209 | */ | |
210 | static void schedule_delayed_retry(private_child_create_t *this) | |
211 | { | |
212 | child_create_t *task; | |
213 | uint32_t retry; | |
214 | ||
215 | retry = RETRY_INTERVAL - (random() % RETRY_JITTER); | |
216 | ||
217 | task = child_create_create(this->ike_sa, | |
218 | this->config->get_ref(this->config), FALSE, | |
219 | this->packet_tsi, this->packet_tsr); | |
220 | task->use_reqid(task, this->reqid); | |
221 | DBG1(DBG_IKE, "creating CHILD_SA failed, trying again in %d seconds", | |
222 | retry); | |
223 | this->ike_sa->queue_task_delayed(this->ike_sa, (task_t*)task, retry); | |
224 | } | |
225 | ||
c60c7694 MW |
226 | /** |
227 | * get the nonce from a message | |
228 | */ | |
229 | static status_t get_nonce(message_t *message, chunk_t *nonce) | |
230 | { | |
231 | nonce_payload_t *payload; | |
7daf5226 | 232 | |
3ecfc83c | 233 | payload = (nonce_payload_t*)message->get_payload(message, PLV2_NONCE); |
c60c7694 MW |
234 | if (payload == NULL) |
235 | { | |
236 | return FAILED; | |
237 | } | |
238 | *nonce = payload->get_nonce(payload); | |
239 | return NEED_MORE; | |
240 | } | |
241 | ||
242 | /** | |
243 | * generate a new nonce to include in a CREATE_CHILD_SA message | |
244 | */ | |
252f2ef8 | 245 | static bool generate_nonce(private_child_create_t *this) |
c60c7694 | 246 | { |
32df0d81 | 247 | this->nonceg = this->keymat->keymat.create_nonce_gen(&this->keymat->keymat); |
252f2ef8 TB |
248 | if (!this->nonceg) |
249 | { | |
250 | DBG1(DBG_IKE, "no nonce generator found to create nonce"); | |
251 | return FALSE; | |
252 | } | |
72376234 RB |
253 | if (!this->nonceg->allocate_nonce(this->nonceg, NONCE_SIZE, |
254 | &this->my_nonce)) | |
605985d1 RB |
255 | { |
256 | DBG1(DBG_IKE, "nonce allocation failed"); | |
252f2ef8 | 257 | return FALSE; |
605985d1 | 258 | } |
252f2ef8 | 259 | return TRUE; |
c60c7694 MW |
260 | } |
261 | ||
262 | /** | |
263 | * Check a list of traffic selectors if any selector belongs to host | |
264 | */ | |
265 | static bool ts_list_is_host(linked_list_t *list, host_t *host) | |
266 | { | |
267 | traffic_selector_t *ts; | |
268 | bool is_host = TRUE; | |
e2630434 | 269 | enumerator_t *enumerator = list->create_enumerator(list); |
7daf5226 | 270 | |
e2630434 | 271 | while (is_host && enumerator->enumerate(enumerator, (void**)&ts)) |
c60c7694 MW |
272 | { |
273 | is_host = is_host && ts->is_host(ts, host); | |
274 | } | |
e2630434 | 275 | enumerator->destroy(enumerator); |
c60c7694 MW |
276 | return is_host; |
277 | } | |
278 | ||
3aaf7908 MW |
279 | /** |
280 | * Allocate SPIs and update proposals | |
281 | */ | |
282 | static bool allocate_spi(private_child_create_t *this) | |
283 | { | |
284 | enumerator_t *enumerator; | |
285 | proposal_t *proposal; | |
7daf5226 | 286 | |
cdab8630 MW |
287 | if (this->initiator) |
288 | { | |
f91bd4b9 | 289 | this->proto = PROTO_ESP; |
cdab8630 MW |
290 | /* we just get a SPI for the first protocol. TODO: If we ever support |
291 | * proposal lists with mixed protocols, we'd need multiple SPIs */ | |
292 | if (this->proposals->get_first(this->proposals, | |
293 | (void**)&proposal) == SUCCESS) | |
294 | { | |
f91bd4b9 | 295 | this->proto = proposal->get_protocol(proposal); |
cdab8630 MW |
296 | } |
297 | } | |
298 | else | |
299 | { | |
f91bd4b9 | 300 | this->proto = this->proposal->get_protocol(this->proposal); |
cdab8630 | 301 | } |
f91bd4b9 | 302 | this->my_spi = this->child_sa->alloc_spi(this->child_sa, this->proto); |
3aaf7908 MW |
303 | if (this->my_spi) |
304 | { | |
305 | if (this->initiator) | |
306 | { | |
307 | enumerator = this->proposals->create_enumerator(this->proposals); | |
308 | while (enumerator->enumerate(enumerator, &proposal)) | |
309 | { | |
310 | proposal->set_spi(proposal, this->my_spi); | |
311 | } | |
312 | enumerator->destroy(enumerator); | |
313 | } | |
314 | else | |
315 | { | |
316 | this->proposal->set_spi(this->proposal, this->my_spi); | |
317 | } | |
318 | return TRUE; | |
319 | } | |
320 | return FALSE; | |
321 | } | |
322 | ||
aa9eeb5d MW |
323 | /** |
324 | * Schedule inactivity timeout for CHILD_SA with reqid, if enabled | |
325 | */ | |
71da0017 | 326 | static void schedule_inactivity_timeout(private_child_create_t *this) |
aa9eeb5d | 327 | { |
b12c53ce | 328 | uint32_t timeout, id; |
aa9eeb5d MW |
329 | bool close_ike; |
330 | ||
71da0017 | 331 | timeout = this->config->get_inactivity(this->config); |
aa9eeb5d MW |
332 | if (timeout) |
333 | { | |
334 | close_ike = lib->settings->get_bool(lib->settings, | |
d223fe80 | 335 | "%s.inactivity_close_ike", FALSE, lib->ns); |
85ace154 | 336 | id = this->child_sa->get_unique_id(this->child_sa); |
bb381e26 | 337 | lib->scheduler->schedule_job(lib->scheduler, (job_t*) |
85ace154 | 338 | inactivity_job_create(id, timeout, close_ike), timeout); |
aa9eeb5d MW |
339 | } |
340 | } | |
341 | ||
7d82aaea MW |
342 | /** |
343 | * Check if we have a an address pool configured | |
344 | */ | |
345 | static bool have_pool(ike_sa_t *ike_sa) | |
346 | { | |
347 | enumerator_t *enumerator; | |
348 | peer_cfg_t *peer_cfg; | |
349 | char *pool; | |
350 | bool found = FALSE; | |
351 | ||
352 | peer_cfg = ike_sa->get_peer_cfg(ike_sa); | |
353 | if (peer_cfg) | |
354 | { | |
355 | enumerator = peer_cfg->create_pool_enumerator(peer_cfg); | |
356 | if (enumerator->enumerate(enumerator, &pool)) | |
357 | { | |
358 | found = TRUE; | |
359 | } | |
360 | enumerator->destroy(enumerator); | |
361 | } | |
362 | return found; | |
363 | } | |
364 | ||
101d26ba | 365 | /** |
7ee37114 | 366 | * Get hosts to use for dynamic traffic selectors |
101d26ba | 367 | */ |
7ee37114 | 368 | static linked_list_t *get_dynamic_hosts(ike_sa_t *ike_sa, bool local) |
101d26ba MW |
369 | { |
370 | enumerator_t *enumerator; | |
7ee37114 | 371 | linked_list_t *list; |
101d26ba MW |
372 | host_t *host; |
373 | ||
7ee37114 | 374 | list = linked_list_create(); |
101d26ba | 375 | enumerator = ike_sa->create_virtual_ip_enumerator(ike_sa, local); |
7ee37114 | 376 | while (enumerator->enumerate(enumerator, &host)) |
101d26ba | 377 | { |
7ee37114 MW |
378 | list->insert_last(list, host); |
379 | } | |
380 | enumerator->destroy(enumerator); | |
381 | ||
382 | if (list->get_count(list) == 0) | |
383 | { /* no virtual IPs assigned */ | |
101d26ba MW |
384 | if (local) |
385 | { | |
386 | host = ike_sa->get_my_host(ike_sa); | |
7ee37114 | 387 | list->insert_last(list, host); |
101d26ba | 388 | } |
7ee37114 MW |
389 | else if (!have_pool(ike_sa)) |
390 | { /* use host only if we don't have a pool configured */ | |
391 | host = ike_sa->get_other_host(ike_sa); | |
392 | list->insert_last(list, host); | |
101d26ba MW |
393 | } |
394 | } | |
7ee37114 | 395 | return list; |
101d26ba MW |
396 | } |
397 | ||
975457c4 MW |
398 | /** |
399 | * Substitude any host address with NATed address in traffic selector | |
400 | */ | |
401 | static linked_list_t* get_transport_nat_ts(private_child_create_t *this, | |
402 | bool local, linked_list_t *in) | |
403 | { | |
404 | enumerator_t *enumerator; | |
405 | linked_list_t *out; | |
406 | traffic_selector_t *ts; | |
407 | host_t *ike, *first = NULL; | |
b12c53ce | 408 | uint8_t mask; |
975457c4 MW |
409 | |
410 | if (local) | |
411 | { | |
412 | ike = this->ike_sa->get_my_host(this->ike_sa); | |
413 | } | |
414 | else | |
415 | { | |
416 | ike = this->ike_sa->get_other_host(this->ike_sa); | |
417 | } | |
418 | ||
419 | out = linked_list_create(); | |
420 | ||
421 | enumerator = in->create_enumerator(in); | |
422 | while (enumerator->enumerate(enumerator, &ts)) | |
423 | { | |
424 | /* require that all selectors match the first "host" selector */ | |
425 | if (ts->is_host(ts, first)) | |
426 | { | |
427 | if (!first) | |
428 | { | |
429 | ts->to_subnet(ts, &first, &mask); | |
430 | } | |
431 | ts = ts->clone(ts); | |
432 | ts->set_address(ts, ike); | |
433 | out->insert_last(out, ts); | |
434 | } | |
435 | } | |
436 | enumerator->destroy(enumerator); | |
437 | DESTROY_IF(first); | |
438 | ||
439 | return out; | |
440 | } | |
441 | ||
442 | /** | |
443 | * Narrow received traffic selectors with configuration | |
444 | */ | |
445 | static linked_list_t* narrow_ts(private_child_create_t *this, bool local, | |
446 | linked_list_t *in) | |
447 | { | |
448 | linked_list_t *hosts, *nat, *ts; | |
449 | ike_condition_t cond; | |
450 | ||
451 | cond = local ? COND_NAT_HERE : COND_NAT_THERE; | |
452 | hosts = get_dynamic_hosts(this->ike_sa, local); | |
453 | ||
454 | if (this->mode == MODE_TRANSPORT && | |
455 | this->ike_sa->has_condition(this->ike_sa, cond)) | |
456 | { | |
457 | nat = get_transport_nat_ts(this, local, in); | |
458 | ts = this->config->get_traffic_selectors(this->config, local, nat, hosts); | |
459 | nat->destroy_offset(nat, offsetof(traffic_selector_t, destroy)); | |
460 | } | |
461 | else | |
462 | { | |
463 | ts = this->config->get_traffic_selectors(this->config, local, in, hosts); | |
464 | } | |
465 | ||
466 | hosts->destroy(hosts); | |
467 | ||
468 | return ts; | |
469 | } | |
470 | ||
c60c7694 | 471 | /** |
1fd5383e MW |
472 | * Install a CHILD_SA for usage, return value: |
473 | * - FAILED: no acceptable proposal | |
474 | * - INVALID_ARG: diffie hellman group inacceptable | |
475 | * - NOT_FOUND: TS inacceptable | |
c60c7694 | 476 | */ |
be715344 MW |
477 | static status_t select_and_install(private_child_create_t *this, |
478 | bool no_dh, bool ike_auth) | |
c60c7694 | 479 | { |
ecb32c75 | 480 | status_t status, status_i, status_o; |
b59f154b AS |
481 | chunk_t nonce_i, nonce_r; |
482 | chunk_t encr_i = chunk_empty, encr_r = chunk_empty; | |
483 | chunk_t integ_i = chunk_empty, integ_r = chunk_empty; | |
975457c4 | 484 | linked_list_t *my_ts, *other_ts; |
101d26ba | 485 | host_t *me, *other; |
0a954d67 | 486 | bool private, prefer_configured; |
7daf5226 | 487 | |
1fd5383e | 488 | if (this->proposals == NULL) |
c60c7694 | 489 | { |
a985db3f | 490 | DBG1(DBG_IKE, "SA payload missing in message"); |
c60c7694 MW |
491 | return FAILED; |
492 | } | |
1fd5383e MW |
493 | if (this->tsi == NULL || this->tsr == NULL) |
494 | { | |
a985db3f | 495 | DBG1(DBG_IKE, "TS payloads missing in message"); |
1fd5383e MW |
496 | return NOT_FOUND; |
497 | } | |
7daf5226 | 498 | |
c60c7694 MW |
499 | me = this->ike_sa->get_my_host(this->ike_sa); |
500 | other = this->ike_sa->get_other_host(this->ike_sa); | |
7daf5226 | 501 | |
023fd8f1 | 502 | private = this->ike_sa->supports_extension(this->ike_sa, EXT_STRONGSWAN); |
0a954d67 TB |
503 | prefer_configured = lib->settings->get_bool(lib->settings, |
504 | "%s.prefer_configured_proposals", TRUE, lib->ns); | |
023fd8f1 | 505 | this->proposal = this->config->select_proposal(this->config, |
0a954d67 | 506 | this->proposals, no_dh, private, prefer_configured); |
6e1be427 MW |
507 | if (this->proposal == NULL) |
508 | { | |
a985db3f | 509 | DBG1(DBG_IKE, "no acceptable proposal found"); |
5dd9c308 MW |
510 | charon->bus->alert(charon->bus, ALERT_PROPOSAL_MISMATCH_CHILD, |
511 | this->proposals); | |
6e1be427 MW |
512 | return FAILED; |
513 | } | |
3aaf7908 | 514 | this->other_spi = this->proposal->get_spi(this->proposal); |
7daf5226 | 515 | |
3aaf7908 MW |
516 | if (!this->initiator && !allocate_spi(this)) |
517 | { /* responder has no SPI allocated yet */ | |
518 | DBG1(DBG_IKE, "allocating SPI failed"); | |
519 | return FAILED; | |
520 | } | |
521 | this->child_sa->set_proposal(this->child_sa, this->proposal); | |
7daf5226 | 522 | |
1fd5383e MW |
523 | if (!this->proposal->has_dh_group(this->proposal, this->dh_group)) |
524 | { | |
b12c53ce | 525 | uint16_t group; |
7daf5226 | 526 | |
1fd5383e | 527 | if (this->proposal->get_algorithm(this->proposal, DIFFIE_HELLMAN_GROUP, |
3c7e72f5 | 528 | &group, NULL)) |
1fd5383e | 529 | { |
a985db3f MW |
530 | DBG1(DBG_IKE, "DH group %N inacceptable, requesting %N", |
531 | diffie_hellman_group_names, this->dh_group, | |
532 | diffie_hellman_group_names, group); | |
1fd5383e MW |
533 | this->dh_group = group; |
534 | return INVALID_ARG; | |
535 | } | |
1f6a707d MW |
536 | /* the selected proposal does not use a DH group */ |
537 | DBG1(DBG_IKE, "ignoring KE exchange, agreed on a non-PFS proposal"); | |
538 | DESTROY_IF(this->dh); | |
539 | this->dh = NULL; | |
540 | this->dh_group = MODP_NONE; | |
1fd5383e | 541 | } |
7daf5226 | 542 | |
80853d84 MW |
543 | if (this->initiator) |
544 | { | |
5dffdea1 MW |
545 | nonce_i = this->my_nonce; |
546 | nonce_r = this->other_nonce; | |
975457c4 MW |
547 | my_ts = narrow_ts(this, TRUE, this->tsi); |
548 | other_ts = narrow_ts(this, FALSE, this->tsr); | |
80853d84 MW |
549 | } |
550 | else | |
551 | { | |
5dffdea1 MW |
552 | nonce_r = this->my_nonce; |
553 | nonce_i = this->other_nonce; | |
975457c4 MW |
554 | my_ts = narrow_ts(this, TRUE, this->tsr); |
555 | other_ts = narrow_ts(this, FALSE, this->tsi); | |
80853d84 | 556 | } |
7daf5226 | 557 | |
be715344 MW |
558 | if (this->initiator) |
559 | { | |
560 | if (ike_auth) | |
561 | { | |
562 | charon->bus->narrow(charon->bus, this->child_sa, | |
563 | NARROW_INITIATOR_POST_NOAUTH, my_ts, other_ts); | |
564 | } | |
565 | else | |
566 | { | |
567 | charon->bus->narrow(charon->bus, this->child_sa, | |
568 | NARROW_INITIATOR_POST_AUTH, my_ts, other_ts); | |
569 | } | |
570 | } | |
571 | else | |
572 | { | |
573 | charon->bus->narrow(charon->bus, this->child_sa, | |
574 | NARROW_RESPONDER, my_ts, other_ts); | |
575 | } | |
576 | ||
e0fe7651 MW |
577 | if (my_ts->get_count(my_ts) == 0 || other_ts->get_count(other_ts) == 0) |
578 | { | |
24f30ec9 | 579 | charon->bus->alert(charon->bus, ALERT_TS_MISMATCH, this->tsi, this->tsr); |
16878f68 MW |
580 | my_ts->destroy_offset(my_ts, offsetof(traffic_selector_t, destroy)); |
581 | other_ts->destroy_offset(other_ts, offsetof(traffic_selector_t, destroy)); | |
a985db3f | 582 | DBG1(DBG_IKE, "no acceptable traffic selectors found"); |
1fd5383e | 583 | return NOT_FOUND; |
c60c7694 | 584 | } |
7daf5226 | 585 | |
c60c7694 MW |
586 | this->tsr->destroy_offset(this->tsr, offsetof(traffic_selector_t, destroy)); |
587 | this->tsi->destroy_offset(this->tsi, offsetof(traffic_selector_t, destroy)); | |
588 | if (this->initiator) | |
589 | { | |
590 | this->tsi = my_ts; | |
591 | this->tsr = other_ts; | |
592 | } | |
593 | else | |
594 | { | |
595 | this->tsr = my_ts; | |
596 | this->tsi = other_ts; | |
597 | } | |
7daf5226 | 598 | |
c60c7694 MW |
599 | if (!this->initiator) |
600 | { | |
601 | /* check if requested mode is acceptable, downgrade if required */ | |
602 | switch (this->mode) | |
603 | { | |
604 | case MODE_TRANSPORT: | |
d487b4b7 AS |
605 | if (!this->config->use_proxy_mode(this->config) && |
606 | (!ts_list_is_host(this->tsi, other) || | |
607 | !ts_list_is_host(this->tsr, me)) | |
608 | ) | |
c60c7694 MW |
609 | { |
610 | this->mode = MODE_TUNNEL; | |
f41a4a4e | 611 | DBG1(DBG_IKE, "not using transport mode, not host-to-host"); |
c60c7694 | 612 | } |
ad5ad02a MW |
613 | if (this->config->get_mode(this->config) != MODE_TRANSPORT) |
614 | { | |
615 | this->mode = MODE_TUNNEL; | |
616 | } | |
c60c7694 MW |
617 | break; |
618 | case MODE_BEET: | |
619 | if (!ts_list_is_host(this->tsi, NULL) || | |
620 | !ts_list_is_host(this->tsr, NULL)) | |
621 | { | |
622 | this->mode = MODE_TUNNEL; | |
623 | DBG1(DBG_IKE, "not using BEET mode, not host-to-host"); | |
624 | } | |
ad5ad02a MW |
625 | if (this->config->get_mode(this->config) != MODE_BEET) |
626 | { | |
627 | this->mode = MODE_TUNNEL; | |
628 | } | |
c60c7694 MW |
629 | break; |
630 | default: | |
631 | break; | |
632 | } | |
633 | } | |
7daf5226 | 634 | |
ea625fab | 635 | this->child_sa->set_state(this->child_sa, CHILD_INSTALLING); |
3aaf7908 MW |
636 | this->child_sa->set_ipcomp(this->child_sa, this->ipcomp); |
637 | this->child_sa->set_mode(this->child_sa, this->mode); | |
638 | this->child_sa->set_protocol(this->child_sa, | |
639 | this->proposal->get_protocol(this->proposal)); | |
7daf5226 | 640 | |
3aaf7908 | 641 | if (this->my_cpi == 0 || this->other_cpi == 0 || this->ipcomp == IPCOMP_NONE) |
d4aad554 | 642 | { |
3aaf7908 MW |
643 | this->my_cpi = this->other_cpi = 0; |
644 | this->ipcomp = IPCOMP_NONE; | |
d4aad554 | 645 | } |
ecb32c75 | 646 | status_i = status_o = FAILED; |
5dffdea1 | 647 | if (this->keymat->derive_child_keys(this->keymat, this->proposal, |
6ec949e0 | 648 | this->dh, nonce_i, nonce_r, &encr_i, &integ_i, &encr_r, &integ_r)) |
c60c7694 | 649 | { |
5dffdea1 | 650 | if (this->initiator) |
80853d84 | 651 | { |
a8c94544 MW |
652 | status_i = this->child_sa->install(this->child_sa, encr_r, integ_r, |
653 | this->my_spi, this->my_cpi, this->initiator, | |
55df72e6 | 654 | TRUE, this->tfcv3, my_ts, other_ts); |
a8c94544 MW |
655 | status_o = this->child_sa->install(this->child_sa, encr_i, integ_i, |
656 | this->other_spi, this->other_cpi, this->initiator, | |
55df72e6 | 657 | FALSE, this->tfcv3, my_ts, other_ts); |
80853d84 | 658 | } |
5dffdea1 | 659 | else |
80853d84 | 660 | { |
a8c94544 MW |
661 | status_i = this->child_sa->install(this->child_sa, encr_i, integ_i, |
662 | this->my_spi, this->my_cpi, this->initiator, | |
55df72e6 | 663 | TRUE, this->tfcv3, my_ts, other_ts); |
a8c94544 MW |
664 | status_o = this->child_sa->install(this->child_sa, encr_r, integ_r, |
665 | this->other_spi, this->other_cpi, this->initiator, | |
55df72e6 | 666 | FALSE, this->tfcv3, my_ts, other_ts); |
80853d84 | 667 | } |
c60c7694 | 668 | } |
7daf5226 | 669 | |
ecb32c75 | 670 | if (status_i != SUCCESS || status_o != SUCCESS) |
c60c7694 | 671 | { |
ecb32c75 AS |
672 | DBG1(DBG_IKE, "unable to install %s%s%sIPsec SA (SAD) in kernel", |
673 | (status_i != SUCCESS) ? "inbound " : "", | |
674 | (status_i != SUCCESS && status_o != SUCCESS) ? "and ": "", | |
675 | (status_o != SUCCESS) ? "outbound " : ""); | |
bcf3147e MW |
676 | charon->bus->alert(charon->bus, ALERT_INSTALL_CHILD_SA_FAILED, |
677 | this->child_sa); | |
0e80f5c3 | 678 | status = FAILED; |
f942588f MW |
679 | } |
680 | else | |
681 | { | |
0e80f5c3 TB |
682 | if (this->initiator) |
683 | { | |
684 | status = this->child_sa->add_policies(this->child_sa, | |
685 | my_ts, other_ts); | |
686 | } | |
687 | else | |
688 | { | |
689 | /* use a copy of the traffic selectors, as the POST hook should not | |
690 | * change payloads */ | |
691 | my_ts = this->tsr->clone_offset(this->tsr, | |
f942588f | 692 | offsetof(traffic_selector_t, clone)); |
0e80f5c3 | 693 | other_ts = this->tsi->clone_offset(this->tsi, |
f942588f | 694 | offsetof(traffic_selector_t, clone)); |
0e80f5c3 TB |
695 | charon->bus->narrow(charon->bus, this->child_sa, |
696 | NARROW_RESPONDER_POST, my_ts, other_ts); | |
697 | if (my_ts->get_count(my_ts) == 0 || | |
698 | other_ts->get_count(other_ts) == 0) | |
699 | { | |
700 | status = FAILED; | |
701 | } | |
702 | else | |
703 | { | |
704 | status = this->child_sa->add_policies(this->child_sa, | |
705 | my_ts, other_ts); | |
706 | } | |
707 | my_ts->destroy_offset(my_ts, | |
708 | offsetof(traffic_selector_t, destroy)); | |
709 | other_ts->destroy_offset(other_ts, | |
710 | offsetof(traffic_selector_t, destroy)); | |
711 | } | |
712 | if (status != SUCCESS) | |
f942588f | 713 | { |
0e80f5c3 TB |
714 | DBG1(DBG_IKE, "unable to install IPsec policies (SPD) in kernel"); |
715 | charon->bus->alert(charon->bus, ALERT_INSTALL_CHILD_POLICY_FAILED, | |
716 | this->child_sa); | |
717 | status = NOT_FOUND; | |
f942588f MW |
718 | } |
719 | else | |
720 | { | |
0e80f5c3 TB |
721 | charon->bus->child_derived_keys(charon->bus, this->child_sa, |
722 | this->initiator, encr_i, encr_r, | |
723 | integ_i, integ_r); | |
f942588f | 724 | } |
f942588f | 725 | } |
0e80f5c3 TB |
726 | chunk_clear(&integ_i); |
727 | chunk_clear(&integ_r); | |
728 | chunk_clear(&encr_i); | |
729 | chunk_clear(&encr_r); | |
730 | ||
ea625fab | 731 | if (status != SUCCESS) |
7daf5226 | 732 | { |
0e80f5c3 | 733 | return status; |
ea625fab | 734 | } |
7daf5226 | 735 | |
b2e447e2 MW |
736 | charon->bus->child_keys(charon->bus, this->child_sa, this->initiator, |
737 | this->dh, nonce_i, nonce_r); | |
7daf5226 | 738 | |
c60c7694 MW |
739 | /* add to IKE_SA, and remove from task */ |
740 | this->child_sa->set_state(this->child_sa, CHILD_INSTALLED); | |
741 | this->ike_sa->add_child_sa(this->ike_sa, this->child_sa); | |
195ada0b | 742 | this->established = TRUE; |
aa9eeb5d | 743 | |
85ace154 | 744 | schedule_inactivity_timeout(this); |
553bb787 MW |
745 | |
746 | my_ts = linked_list_create_from_enumerator( | |
747 | this->child_sa->create_ts_enumerator(this->child_sa, TRUE)); | |
748 | other_ts = linked_list_create_from_enumerator( | |
749 | this->child_sa->create_ts_enumerator(this->child_sa, FALSE)); | |
750 | ||
751 | DBG0(DBG_IKE, "CHILD_SA %s{%d} established " | |
ebeb8c87 | 752 | "with SPIs %.8x_i %.8x_o and TS %#R === %#R", |
553bb787 | 753 | this->child_sa->get_name(this->child_sa), |
246c969d | 754 | this->child_sa->get_unique_id(this->child_sa), |
553bb787 MW |
755 | ntohl(this->child_sa->get_spi(this->child_sa, TRUE)), |
756 | ntohl(this->child_sa->get_spi(this->child_sa, FALSE)), my_ts, other_ts); | |
757 | ||
758 | my_ts->destroy(my_ts); | |
759 | other_ts->destroy(other_ts); | |
760 | ||
c60c7694 MW |
761 | return SUCCESS; |
762 | } | |
763 | ||
764 | /** | |
765 | * build the payloads for the message | |
766 | */ | |
520d58e0 | 767 | static bool build_payloads(private_child_create_t *this, message_t *message) |
c60c7694 MW |
768 | { |
769 | sa_payload_t *sa_payload; | |
c60c7694 | 770 | nonce_payload_t *nonce_payload; |
1fd5383e MW |
771 | ke_payload_t *ke_payload; |
772 | ts_payload_t *ts_payload; | |
5c55be49 | 773 | kernel_feature_t features; |
c60c7694 MW |
774 | |
775 | /* add SA payload */ | |
776 | if (this->initiator) | |
777 | { | |
e174e0d4 | 778 | sa_payload = sa_payload_create_from_proposals_v2(this->proposals); |
c60c7694 MW |
779 | } |
780 | else | |
781 | { | |
e174e0d4 | 782 | sa_payload = sa_payload_create_from_proposal_v2(this->proposal); |
c60c7694 MW |
783 | } |
784 | message->add_payload(message, (payload_t*)sa_payload); | |
7daf5226 | 785 | |
c60c7694 MW |
786 | /* add nonce payload if not in IKE_AUTH */ |
787 | if (message->get_exchange_type(message) == CREATE_CHILD_SA) | |
788 | { | |
3ecfc83c | 789 | nonce_payload = nonce_payload_create(PLV2_NONCE); |
c60c7694 MW |
790 | nonce_payload->set_nonce(nonce_payload, this->my_nonce); |
791 | message->add_payload(message, (payload_t*)nonce_payload); | |
792 | } | |
7daf5226 | 793 | |
1fd5383e MW |
794 | /* diffie hellman exchange, if PFS enabled */ |
795 | if (this->dh) | |
796 | { | |
3ecfc83c | 797 | ke_payload = ke_payload_create_from_diffie_hellman(PLV2_KEY_EXCHANGE, |
683d83ed | 798 | this->dh); |
520d58e0 MW |
799 | if (!ke_payload) |
800 | { | |
801 | DBG1(DBG_IKE, "creating KE payload failed"); | |
802 | return FALSE; | |
803 | } | |
1fd5383e MW |
804 | message->add_payload(message, (payload_t*)ke_payload); |
805 | } | |
7daf5226 | 806 | |
c676f2e2 MW |
807 | /* add TSi/TSr payloads */ |
808 | ts_payload = ts_payload_create_from_traffic_selectors(TRUE, this->tsi); | |
809 | message->add_payload(message, (payload_t*)ts_payload); | |
810 | ts_payload = ts_payload_create_from_traffic_selectors(FALSE, this->tsr); | |
811 | message->add_payload(message, (payload_t*)ts_payload); | |
812 | ||
c60c7694 MW |
813 | /* add a notify if we are not in tunnel mode */ |
814 | switch (this->mode) | |
815 | { | |
816 | case MODE_TRANSPORT: | |
817 | message->add_notify(message, FALSE, USE_TRANSPORT_MODE, chunk_empty); | |
818 | break; | |
819 | case MODE_BEET: | |
820 | message->add_notify(message, FALSE, USE_BEET_MODE, chunk_empty); | |
821 | break; | |
822 | default: | |
823 | break; | |
824 | } | |
5c55be49 | 825 | |
8394ea2a | 826 | features = charon->kernel->get_features(charon->kernel); |
5c55be49 MW |
827 | if (!(features & KERNEL_ESP_V3_TFC)) |
828 | { | |
829 | message->add_notify(message, FALSE, ESP_TFC_PADDING_NOT_SUPPORTED, | |
830 | chunk_empty); | |
831 | } | |
520d58e0 | 832 | return TRUE; |
c60c7694 MW |
833 | } |
834 | ||
d4aad554 | 835 | /** |
3aaf7908 | 836 | * Adds an IPCOMP_SUPPORTED notify to the message, allocating a CPI |
d4aad554 | 837 | */ |
3aaf7908 | 838 | static void add_ipcomp_notify(private_child_create_t *this, |
b12c53ce | 839 | message_t *message, uint8_t ipcomp) |
d4aad554 | 840 | { |
3aaf7908 MW |
841 | this->my_cpi = this->child_sa->alloc_cpi(this->child_sa); |
842 | if (this->my_cpi) | |
d4aad554 | 843 | { |
3aaf7908 | 844 | this->ipcomp = ipcomp; |
7daf5226 | 845 | message->add_notify(message, FALSE, IPCOMP_SUPPORTED, |
3aaf7908 MW |
846 | chunk_cata("cc", chunk_from_thing(this->my_cpi), |
847 | chunk_from_thing(ipcomp))); | |
d4aad554 TB |
848 | } |
849 | else | |
850 | { | |
d510eaea | 851 | DBG1(DBG_IKE, "unable to allocate a CPI from kernel, IPComp disabled"); |
3aaf7908 MW |
852 | } |
853 | } | |
854 | ||
855 | /** | |
856 | * handle a received notify payload | |
857 | */ | |
858 | static void handle_notify(private_child_create_t *this, notify_payload_t *notify) | |
859 | { | |
860 | switch (notify->get_notify_type(notify)) | |
861 | { | |
862 | case USE_TRANSPORT_MODE: | |
863 | this->mode = MODE_TRANSPORT; | |
864 | break; | |
865 | case USE_BEET_MODE: | |
b3349c56 MW |
866 | if (this->ike_sa->supports_extension(this->ike_sa, EXT_STRONGSWAN)) |
867 | { /* handle private use notify only if we know its meaning */ | |
868 | this->mode = MODE_BEET; | |
869 | } | |
870 | else | |
871 | { | |
872 | DBG1(DBG_IKE, "received a notify strongSwan uses for BEET " | |
873 | "mode, but peer implementation unknown, skipped"); | |
874 | } | |
3aaf7908 MW |
875 | break; |
876 | case IPCOMP_SUPPORTED: | |
877 | { | |
878 | ipcomp_transform_t ipcomp; | |
b12c53ce | 879 | uint16_t cpi; |
3aaf7908 | 880 | chunk_t data; |
7daf5226 | 881 | |
3aaf7908 | 882 | data = notify->get_notification_data(notify); |
b12c53ce | 883 | cpi = *(uint16_t*)data.ptr; |
3aaf7908 MW |
884 | ipcomp = (ipcomp_transform_t)(*(data.ptr + 2)); |
885 | switch (ipcomp) | |
886 | { | |
887 | case IPCOMP_DEFLATE: | |
888 | this->other_cpi = cpi; | |
889 | this->ipcomp_received = ipcomp; | |
890 | break; | |
891 | case IPCOMP_LZS: | |
892 | case IPCOMP_LZJH: | |
893 | default: | |
894 | DBG1(DBG_IKE, "received IPCOMP_SUPPORTED notify with a " | |
895 | "transform ID we don't support %N", | |
896 | ipcomp_transform_names, ipcomp); | |
897 | break; | |
898 | } | |
55df72e6 | 899 | break; |
3aaf7908 | 900 | } |
55df72e6 MW |
901 | case ESP_TFC_PADDING_NOT_SUPPORTED: |
902 | DBG1(DBG_IKE, "received %N, not using ESPv3 TFC padding", | |
903 | notify_type_names, notify->get_notify_type(notify)); | |
904 | this->tfcv3 = FALSE; | |
905 | break; | |
3aaf7908 MW |
906 | default: |
907 | break; | |
d4aad554 TB |
908 | } |
909 | } | |
910 | ||
c60c7694 MW |
911 | /** |
912 | * Read payloads from message | |
913 | */ | |
914 | static void process_payloads(private_child_create_t *this, message_t *message) | |
915 | { | |
a44bb934 | 916 | enumerator_t *enumerator; |
c60c7694 MW |
917 | payload_t *payload; |
918 | sa_payload_t *sa_payload; | |
1fd5383e | 919 | ke_payload_t *ke_payload; |
c60c7694 | 920 | ts_payload_t *ts_payload; |
7daf5226 | 921 | |
c60c7694 MW |
922 | /* defaults to TUNNEL mode */ |
923 | this->mode = MODE_TUNNEL; | |
924 | ||
a44bb934 MW |
925 | enumerator = message->create_payload_enumerator(message); |
926 | while (enumerator->enumerate(enumerator, &payload)) | |
c60c7694 MW |
927 | { |
928 | switch (payload->get_type(payload)) | |
929 | { | |
3ecfc83c | 930 | case PLV2_SECURITY_ASSOCIATION: |
c60c7694 MW |
931 | sa_payload = (sa_payload_t*)payload; |
932 | this->proposals = sa_payload->get_proposals(sa_payload); | |
933 | break; | |
3ecfc83c | 934 | case PLV2_KEY_EXCHANGE: |
1fd5383e MW |
935 | ke_payload = (ke_payload_t*)payload; |
936 | if (!this->initiator) | |
937 | { | |
938 | this->dh_group = ke_payload->get_dh_group_number(ke_payload); | |
a0563846 TB |
939 | this->dh = this->keymat->keymat.create_dh( |
940 | &this->keymat->keymat, this->dh_group); | |
1fd5383e MW |
941 | } |
942 | if (this->dh) | |
943 | { | |
a777155f | 944 | this->dh_failed = !this->dh->set_other_public_value(this->dh, |
1fd5383e MW |
945 | ke_payload->get_key_exchange_data(ke_payload)); |
946 | } | |
947 | break; | |
3ecfc83c | 948 | case PLV2_TS_INITIATOR: |
c60c7694 MW |
949 | ts_payload = (ts_payload_t*)payload; |
950 | this->tsi = ts_payload->get_traffic_selectors(ts_payload); | |
7daf5226 | 951 | break; |
3ecfc83c | 952 | case PLV2_TS_RESPONDER: |
c60c7694 MW |
953 | ts_payload = (ts_payload_t*)payload; |
954 | this->tsr = ts_payload->get_traffic_selectors(ts_payload); | |
955 | break; | |
3ecfc83c | 956 | case PLV2_NOTIFY: |
3aaf7908 | 957 | handle_notify(this, (notify_payload_t*)payload); |
c60c7694 MW |
958 | break; |
959 | default: | |
960 | break; | |
961 | } | |
962 | } | |
a44bb934 | 963 | enumerator->destroy(enumerator); |
c60c7694 MW |
964 | } |
965 | ||
cf16a29d AS |
966 | METHOD(task_t, build_i, status_t, |
967 | private_child_create_t *this, message_t *message) | |
c60c7694 | 968 | { |
101d26ba MW |
969 | enumerator_t *enumerator; |
970 | host_t *vip; | |
e0fe7651 | 971 | peer_cfg_t *peer_cfg; |
7ee37114 | 972 | linked_list_t *list; |
7daf5226 | 973 | |
c60c7694 MW |
974 | switch (message->get_exchange_type(message)) |
975 | { | |
976 | case IKE_SA_INIT: | |
977 | return get_nonce(message, &this->my_nonce); | |
978 | case CREATE_CHILD_SA: | |
252f2ef8 | 979 | if (!generate_nonce(this)) |
c60c7694 | 980 | { |
252f2ef8 TB |
981 | message->add_notify(message, FALSE, NO_PROPOSAL_CHOSEN, |
982 | chunk_empty); | |
c60c7694 MW |
983 | return SUCCESS; |
984 | } | |
82ad53b7 | 985 | if (!this->retry) |
1fd5383e MW |
986 | { |
987 | this->dh_group = this->config->get_dh_group(this->config); | |
988 | } | |
9b8b3e5f | 989 | break; |
49e8ac05 | 990 | case IKE_AUTH: |
a44bb934 | 991 | if (message->get_message_id(message) != 1) |
49e8ac05 | 992 | { |
a44bb934 | 993 | /* send only in the first request, not in subsequent rounds */ |
49e8ac05 MW |
994 | return NEED_MORE; |
995 | } | |
c60c7694 MW |
996 | break; |
997 | default: | |
998 | break; | |
999 | } | |
7daf5226 | 1000 | |
51c8f826 AS |
1001 | if (this->reqid) |
1002 | { | |
7790ab0f | 1003 | DBG0(DBG_IKE, "establishing CHILD_SA %s{%d}", |
a985db3f | 1004 | this->config->get_name(this->config), this->reqid); |
51c8f826 AS |
1005 | } |
1006 | else | |
1007 | { | |
7790ab0f | 1008 | DBG0(DBG_IKE, "establishing CHILD_SA %s", |
a985db3f | 1009 | this->config->get_name(this->config)); |
51c8f826 | 1010 | } |
7daf5226 | 1011 | |
419201c1 | 1012 | /* check if we want a virtual IP, but don't have one */ |
7ee37114 | 1013 | list = linked_list_create(); |
b81d8cd3 | 1014 | peer_cfg = this->ike_sa->get_peer_cfg(this->ike_sa); |
4469e3d0 | 1015 | if (!this->rekey) |
419201c1 | 1016 | { |
7ee37114 MW |
1017 | enumerator = peer_cfg->create_virtual_ip_enumerator(peer_cfg); |
1018 | while (enumerator->enumerate(enumerator, &vip)) | |
1019 | { | |
1020 | /* propose a 0.0.0.0/0 or ::/0 subnet when we use virtual ip */ | |
1021 | vip = host_create_any(vip->get_family(vip)); | |
1022 | list->insert_last(list, vip); | |
1023 | } | |
1024 | enumerator->destroy(enumerator); | |
1025 | } | |
1026 | if (list->get_count(list)) | |
1027 | { | |
1028 | this->tsi = this->config->get_traffic_selectors(this->config, | |
1029 | TRUE, NULL, list); | |
1030 | list->destroy_offset(list, offsetof(host_t, destroy)); | |
c60c7694 MW |
1031 | } |
1032 | else | |
7ee37114 MW |
1033 | { /* no virtual IPs configured */ |
1034 | list->destroy(list); | |
1035 | list = get_dynamic_hosts(this->ike_sa, TRUE); | |
1036 | this->tsi = this->config->get_traffic_selectors(this->config, | |
1037 | TRUE, NULL, list); | |
1038 | list->destroy(list); | |
c60c7694 | 1039 | } |
7ee37114 MW |
1040 | list = get_dynamic_hosts(this->ike_sa, FALSE); |
1041 | this->tsr = this->config->get_traffic_selectors(this->config, | |
1042 | FALSE, NULL, list); | |
1043 | list->destroy(list); | |
7daf5226 | 1044 | |
a13c013b MW |
1045 | if (this->packet_tsi) |
1046 | { | |
1047 | this->tsi->insert_first(this->tsi, | |
1048 | this->packet_tsi->clone(this->packet_tsi)); | |
1049 | } | |
1050 | if (this->packet_tsr) | |
1051 | { | |
1052 | this->tsr->insert_first(this->tsr, | |
1053 | this->packet_tsr->clone(this->packet_tsr)); | |
1054 | } | |
1fd5383e MW |
1055 | this->proposals = this->config->get_proposals(this->config, |
1056 | this->dh_group == MODP_NONE); | |
e0fe7651 | 1057 | this->mode = this->config->get_mode(this->config); |
7daf5226 | 1058 | |
ad3af574 MW |
1059 | this->child_sa = child_sa_create(this->ike_sa->get_my_host(this->ike_sa), |
1060 | this->ike_sa->get_other_host(this->ike_sa), this->config, this->reqid, | |
85b23888 MW |
1061 | this->ike_sa->has_condition(this->ike_sa, COND_NAT_ANY), |
1062 | this->mark_in, this->mark_out); | |
7daf5226 | 1063 | |
3aaf7908 | 1064 | if (!allocate_spi(this)) |
c60c7694 | 1065 | { |
a985db3f | 1066 | DBG1(DBG_IKE, "unable to allocate SPIs from kernel"); |
c60c7694 MW |
1067 | return FAILED; |
1068 | } | |
7daf5226 | 1069 | |
1fd5383e MW |
1070 | if (this->dh_group != MODP_NONE) |
1071 | { | |
a0563846 TB |
1072 | this->dh = this->keymat->keymat.create_dh(&this->keymat->keymat, |
1073 | this->dh_group); | |
1fd5383e | 1074 | } |
7daf5226 | 1075 | |
3aaf7908 MW |
1076 | if (this->config->use_ipcomp(this->config)) |
1077 | { | |
d4aad554 | 1078 | /* IPCOMP_DEFLATE is the only transform we support at the moment */ |
3aaf7908 | 1079 | add_ipcomp_notify(this, message, IPCOMP_DEFLATE); |
d4aad554 | 1080 | } |
7daf5226 | 1081 | |
be715344 MW |
1082 | if (message->get_exchange_type(message) == IKE_AUTH) |
1083 | { | |
1084 | charon->bus->narrow(charon->bus, this->child_sa, | |
1085 | NARROW_INITIATOR_PRE_NOAUTH, this->tsi, this->tsr); | |
1086 | } | |
1087 | else | |
1088 | { | |
1089 | charon->bus->narrow(charon->bus, this->child_sa, | |
1090 | NARROW_INITIATOR_PRE_AUTH, this->tsi, this->tsr); | |
1091 | } | |
1092 | ||
520d58e0 MW |
1093 | if (!build_payloads(this, message)) |
1094 | { | |
1095 | return FAILED; | |
1096 | } | |
7daf5226 | 1097 | |
c60c7694 MW |
1098 | this->tsi->destroy_offset(this->tsi, offsetof(traffic_selector_t, destroy)); |
1099 | this->tsr->destroy_offset(this->tsr, offsetof(traffic_selector_t, destroy)); | |
1100 | this->proposals->destroy_offset(this->proposals, offsetof(proposal_t, destroy)); | |
1101 | this->tsi = NULL; | |
1102 | this->tsr = NULL; | |
1103 | this->proposals = NULL; | |
7daf5226 | 1104 | |
c60c7694 MW |
1105 | return NEED_MORE; |
1106 | } | |
1107 | ||
cf16a29d AS |
1108 | METHOD(task_t, process_r, status_t, |
1109 | private_child_create_t *this, message_t *message) | |
c60c7694 MW |
1110 | { |
1111 | switch (message->get_exchange_type(message)) | |
1112 | { | |
1113 | case IKE_SA_INIT: | |
1114 | return get_nonce(message, &this->other_nonce); | |
1115 | case CREATE_CHILD_SA: | |
1116 | get_nonce(message, &this->other_nonce); | |
1117 | break; | |
49e8ac05 | 1118 | case IKE_AUTH: |
a44bb934 | 1119 | if (message->get_message_id(message) != 1) |
49e8ac05 | 1120 | { |
a44bb934 | 1121 | /* only handle first AUTH payload, not additional rounds */ |
49e8ac05 MW |
1122 | return NEED_MORE; |
1123 | } | |
c60c7694 MW |
1124 | default: |
1125 | break; | |
1126 | } | |
7daf5226 | 1127 | |
c60c7694 | 1128 | process_payloads(this, message); |
7daf5226 | 1129 | |
c60c7694 MW |
1130 | return NEED_MORE; |
1131 | } | |
1132 | ||
866ba8e0 MW |
1133 | /** |
1134 | * handle CHILD_SA setup failure | |
1135 | */ | |
1136 | static void handle_child_sa_failure(private_child_create_t *this, | |
1137 | message_t *message) | |
1138 | { | |
8262be3c AKR |
1139 | bool is_first; |
1140 | ||
1141 | is_first = message->get_exchange_type(message) == IKE_AUTH; | |
1142 | if (is_first && | |
866ba8e0 | 1143 | lib->settings->get_bool(lib->settings, |
d223fe80 | 1144 | "%s.close_ike_on_child_failure", FALSE, lib->ns)) |
866ba8e0 MW |
1145 | { |
1146 | /* we delay the delete for 100ms, as the IKE_AUTH response must arrive | |
1147 | * first */ | |
1148 | DBG1(DBG_IKE, "closing IKE_SA due CHILD_SA setup failure"); | |
bb381e26 | 1149 | lib->scheduler->schedule_job_ms(lib->scheduler, (job_t*) |
866ba8e0 MW |
1150 | delete_ike_sa_job_create(this->ike_sa->get_id(this->ike_sa), TRUE), |
1151 | 100); | |
1152 | } | |
5d549cd4 TB |
1153 | else |
1154 | { | |
1155 | DBG1(DBG_IKE, "failed to establish CHILD_SA, keeping IKE_SA"); | |
8262be3c AKR |
1156 | charon->bus->alert(charon->bus, ALERT_KEEP_ON_CHILD_SA_FAILURE, |
1157 | is_first); | |
5d549cd4 | 1158 | } |
866ba8e0 MW |
1159 | } |
1160 | ||
975457c4 MW |
1161 | /** |
1162 | * Substitute transport mode NAT selectors, if applicable | |
1163 | */ | |
1164 | static linked_list_t* get_ts_if_nat_transport(private_child_create_t *this, | |
1165 | bool local, linked_list_t *in) | |
1166 | { | |
1167 | linked_list_t *out = NULL; | |
1168 | ike_condition_t cond; | |
1169 | ||
1170 | if (this->mode == MODE_TRANSPORT) | |
1171 | { | |
1172 | cond = local ? COND_NAT_HERE : COND_NAT_THERE; | |
1173 | if (this->ike_sa->has_condition(this->ike_sa, cond)) | |
1174 | { | |
1175 | out = get_transport_nat_ts(this, local, in); | |
1176 | if (out->get_count(out) == 0) | |
1177 | { | |
1178 | out->destroy(out); | |
1179 | out = NULL; | |
1180 | } | |
1181 | } | |
1182 | } | |
1183 | return out; | |
1184 | } | |
1185 | ||
1186 | /** | |
1187 | * Select a matching CHILD config as responder | |
1188 | */ | |
1189 | static child_cfg_t* select_child_cfg(private_child_create_t *this) | |
1190 | { | |
1191 | peer_cfg_t *peer_cfg; | |
1192 | child_cfg_t *child_cfg = NULL;; | |
1193 | ||
1194 | peer_cfg = this->ike_sa->get_peer_cfg(this->ike_sa); | |
1195 | if (peer_cfg && this->tsi && this->tsr) | |
1196 | { | |
1197 | linked_list_t *listr, *listi, *tsr, *tsi; | |
1198 | ||
1199 | tsr = get_ts_if_nat_transport(this, TRUE, this->tsr); | |
1200 | tsi = get_ts_if_nat_transport(this, FALSE, this->tsi); | |
1201 | ||
1202 | listr = get_dynamic_hosts(this->ike_sa, TRUE); | |
1203 | listi = get_dynamic_hosts(this->ike_sa, FALSE); | |
1204 | child_cfg = peer_cfg->select_child_cfg(peer_cfg, | |
1205 | tsr ?: this->tsr, tsi ?: this->tsi, | |
1206 | listr, listi); | |
1207 | if ((tsi || tsr) && child_cfg && | |
1208 | child_cfg->get_mode(child_cfg) != MODE_TRANSPORT) | |
1209 | { | |
1210 | /* found a CHILD config, but it doesn't use transport mode */ | |
1211 | child_cfg->destroy(child_cfg); | |
1212 | child_cfg = NULL; | |
1213 | } | |
1214 | if (!child_cfg && (tsi || tsr)) | |
1215 | { | |
1216 | /* no match for the substituted NAT selectors, try it without */ | |
1217 | child_cfg = peer_cfg->select_child_cfg(peer_cfg, | |
1218 | this->tsr, this->tsi, listr, listi); | |
1219 | } | |
1220 | listr->destroy(listr); | |
1221 | listi->destroy(listi); | |
1222 | DESTROY_OFFSET_IF(tsi, offsetof(traffic_selector_t, destroy)); | |
1223 | DESTROY_OFFSET_IF(tsr, offsetof(traffic_selector_t, destroy)); | |
1224 | } | |
1225 | ||
1226 | return child_cfg; | |
1227 | } | |
1228 | ||
cf16a29d AS |
1229 | METHOD(task_t, build_r, status_t, |
1230 | private_child_create_t *this, message_t *message) | |
c60c7694 | 1231 | { |
d510eaea | 1232 | payload_t *payload; |
a44bb934 | 1233 | enumerator_t *enumerator; |
be715344 | 1234 | bool no_dh = TRUE, ike_auth = FALSE; |
7daf5226 | 1235 | |
c60c7694 MW |
1236 | switch (message->get_exchange_type(message)) |
1237 | { | |
1238 | case IKE_SA_INIT: | |
1239 | return get_nonce(message, &this->my_nonce); | |
1240 | case CREATE_CHILD_SA: | |
252f2ef8 | 1241 | if (!generate_nonce(this)) |
a777155f MW |
1242 | { |
1243 | message->add_notify(message, FALSE, NO_PROPOSAL_CHOSEN, | |
1244 | chunk_empty); | |
1245 | return SUCCESS; | |
1246 | } | |
1247 | if (this->dh_failed) | |
c60c7694 | 1248 | { |
a777155f | 1249 | DBG1(DBG_IKE, "applying DH public value failed"); |
866ba8e0 MW |
1250 | message->add_notify(message, FALSE, NO_PROPOSAL_CHOSEN, |
1251 | chunk_empty); | |
c60c7694 MW |
1252 | return SUCCESS; |
1253 | } | |
1fd5383e | 1254 | no_dh = FALSE; |
c60c7694 | 1255 | break; |
49e8ac05 | 1256 | case IKE_AUTH: |
a44bb934 MW |
1257 | if (this->ike_sa->get_state(this->ike_sa) != IKE_ESTABLISHED) |
1258 | { /* wait until all authentication round completed */ | |
49e8ac05 MW |
1259 | return NEED_MORE; |
1260 | } | |
b6fcb917 TB |
1261 | if (this->ike_sa->has_condition(this->ike_sa, COND_REDIRECTED)) |
1262 | { /* no CHILD_SA is created for redirected SAs */ | |
1263 | return SUCCESS; | |
1264 | } | |
be715344 | 1265 | ike_auth = TRUE; |
c60c7694 MW |
1266 | default: |
1267 | break; | |
1268 | } | |
7daf5226 | 1269 | |
0f33e826 MW |
1270 | if (this->ike_sa->get_state(this->ike_sa) == IKE_REKEYING) |
1271 | { | |
a985db3f | 1272 | DBG1(DBG_IKE, "unable to create CHILD_SA while rekeying IKE_SA"); |
869b7075 | 1273 | message->add_notify(message, TRUE, TEMPORARY_FAILURE, chunk_empty); |
0f33e826 MW |
1274 | return SUCCESS; |
1275 | } | |
f02cabbe MW |
1276 | if (this->ike_sa->get_state(this->ike_sa) == IKE_DELETING) |
1277 | { | |
1278 | DBG1(DBG_IKE, "unable to create CHILD_SA while deleting IKE_SA"); | |
869b7075 | 1279 | message->add_notify(message, TRUE, TEMPORARY_FAILURE, chunk_empty); |
f02cabbe MW |
1280 | return SUCCESS; |
1281 | } | |
7daf5226 | 1282 | |
975457c4 | 1283 | if (this->config == NULL) |
a44bb934 | 1284 | { |
975457c4 | 1285 | this->config = select_child_cfg(this); |
a44bb934 | 1286 | } |
e0fe7651 | 1287 | if (this->config == NULL) |
c60c7694 | 1288 | { |
ebeb8c87 | 1289 | DBG1(DBG_IKE, "traffic selectors %#R === %#R inacceptable", |
a985db3f | 1290 | this->tsr, this->tsi); |
24f30ec9 | 1291 | charon->bus->alert(charon->bus, ALERT_TS_MISMATCH, this->tsi, this->tsr); |
e0fe7651 | 1292 | message->add_notify(message, FALSE, TS_UNACCEPTABLE, chunk_empty); |
866ba8e0 | 1293 | handle_child_sa_failure(this, message); |
c60c7694 MW |
1294 | return SUCCESS; |
1295 | } | |
7daf5226 | 1296 | |
d510eaea | 1297 | /* check if ike_config_t included non-critical error notifies */ |
a44bb934 MW |
1298 | enumerator = message->create_payload_enumerator(message); |
1299 | while (enumerator->enumerate(enumerator, &payload)) | |
d510eaea | 1300 | { |
3ecfc83c | 1301 | if (payload->get_type(payload) == PLV2_NOTIFY) |
d510eaea MW |
1302 | { |
1303 | notify_payload_t *notify = (notify_payload_t*)payload; | |
7daf5226 | 1304 | |
d510eaea MW |
1305 | switch (notify->get_notify_type(notify)) |
1306 | { | |
1307 | case INTERNAL_ADDRESS_FAILURE: | |
1308 | case FAILED_CP_REQUIRED: | |
1309 | { | |
84545f6e | 1310 | DBG1(DBG_IKE,"configuration payload negotiation " |
a985db3f | 1311 | "failed, no CHILD_SA built"); |
a44bb934 | 1312 | enumerator->destroy(enumerator); |
866ba8e0 | 1313 | handle_child_sa_failure(this, message); |
d510eaea MW |
1314 | return SUCCESS; |
1315 | } | |
1316 | default: | |
1317 | break; | |
1318 | } | |
1319 | } | |
1320 | } | |
a44bb934 | 1321 | enumerator->destroy(enumerator); |
7daf5226 | 1322 | |
ad3af574 MW |
1323 | this->child_sa = child_sa_create(this->ike_sa->get_my_host(this->ike_sa), |
1324 | this->ike_sa->get_other_host(this->ike_sa), this->config, this->reqid, | |
85b23888 MW |
1325 | this->ike_sa->has_condition(this->ike_sa, COND_NAT_ANY), |
1326 | this->mark_in, this->mark_out); | |
7daf5226 | 1327 | |
3aaf7908 | 1328 | if (this->ipcomp_received != IPCOMP_NONE) |
d4aad554 | 1329 | { |
3aaf7908 MW |
1330 | if (this->config->use_ipcomp(this->config)) |
1331 | { | |
1332 | add_ipcomp_notify(this, message, this->ipcomp_received); | |
1333 | } | |
1334 | else | |
1335 | { | |
1336 | DBG1(DBG_IKE, "received %N notify but IPComp is disabled, ignoring", | |
1337 | notify_type_names, IPCOMP_SUPPORTED); | |
1338 | } | |
d4aad554 | 1339 | } |
7daf5226 | 1340 | |
be715344 | 1341 | switch (select_and_install(this, no_dh, ike_auth)) |
c60c7694 | 1342 | { |
1fd5383e MW |
1343 | case SUCCESS: |
1344 | break; | |
1345 | case NOT_FOUND: | |
1346 | message->add_notify(message, FALSE, TS_UNACCEPTABLE, chunk_empty); | |
866ba8e0 | 1347 | handle_child_sa_failure(this, message); |
1fd5383e MW |
1348 | return SUCCESS; |
1349 | case INVALID_ARG: | |
1350 | { | |
b12c53ce | 1351 | uint16_t group = htons(this->dh_group); |
1fd5383e MW |
1352 | message->add_notify(message, FALSE, INVALID_KE_PAYLOAD, |
1353 | chunk_from_thing(group)); | |
866ba8e0 | 1354 | handle_child_sa_failure(this, message); |
1fd5383e MW |
1355 | return SUCCESS; |
1356 | } | |
1357 | case FAILED: | |
1358 | default: | |
1359 | message->add_notify(message, FALSE, NO_PROPOSAL_CHOSEN, chunk_empty); | |
866ba8e0 | 1360 | handle_child_sa_failure(this, message); |
1fd5383e | 1361 | return SUCCESS; |
c60c7694 | 1362 | } |
7daf5226 | 1363 | |
520d58e0 MW |
1364 | if (!build_payloads(this, message)) |
1365 | { | |
1366 | message->add_notify(message, FALSE, NO_PROPOSAL_CHOSEN, chunk_empty); | |
1367 | handle_child_sa_failure(this, message); | |
1368 | return SUCCESS; | |
1369 | } | |
7daf5226 | 1370 | |
f669f453 MW |
1371 | if (!this->rekey) |
1372 | { /* invoke the child_up() hook if we are not rekeying */ | |
1373 | charon->bus->child_updown(charon->bus, this->child_sa, TRUE); | |
1374 | } | |
c60c7694 MW |
1375 | return SUCCESS; |
1376 | } | |
1377 | ||
e93f386d MW |
1378 | /** |
1379 | * Raise alerts for received notify errors | |
1380 | */ | |
1381 | static void raise_alerts(private_child_create_t *this, notify_type_t type) | |
1382 | { | |
1383 | linked_list_t *list; | |
1384 | ||
1385 | switch (type) | |
1386 | { | |
1387 | case NO_PROPOSAL_CHOSEN: | |
1388 | list = this->config->get_proposals(this->config, FALSE); | |
1389 | charon->bus->alert(charon->bus, ALERT_PROPOSAL_MISMATCH_CHILD, list); | |
1390 | list->destroy_offset(list, offsetof(proposal_t, destroy)); | |
1391 | break; | |
1392 | default: | |
1393 | break; | |
1394 | } | |
1395 | } | |
1396 | ||
e196c41b MW |
1397 | METHOD(task_t, build_i_delete, status_t, |
1398 | private_child_create_t *this, message_t *message) | |
1399 | { | |
1400 | message->set_exchange_type(message, INFORMATIONAL); | |
f91bd4b9 | 1401 | if (this->my_spi && this->proto) |
e196c41b | 1402 | { |
e196c41b | 1403 | delete_payload_t *del; |
e196c41b | 1404 | |
f91bd4b9 | 1405 | del = delete_payload_create(PLV2_DELETE, this->proto); |
ffe0889a | 1406 | del->add_spi(del, this->my_spi); |
e196c41b MW |
1407 | message->add_payload(message, (payload_t*)del); |
1408 | ||
1409 | DBG1(DBG_IKE, "sending DELETE for %N CHILD_SA with SPI %.8x", | |
f91bd4b9 | 1410 | protocol_id_names, this->proto, ntohl(this->my_spi)); |
e196c41b MW |
1411 | } |
1412 | return NEED_MORE; | |
1413 | } | |
1414 | ||
1415 | /** | |
1416 | * Change task to delete the failed CHILD_SA as initiator | |
1417 | */ | |
1418 | static status_t delete_failed_sa(private_child_create_t *this) | |
1419 | { | |
f91bd4b9 | 1420 | if (this->my_spi && this->proto) |
ffe0889a TB |
1421 | { |
1422 | this->public.task.build = _build_i_delete; | |
1423 | this->public.task.process = (void*)return_success; | |
1424 | return NEED_MORE; | |
1425 | } | |
1426 | return SUCCESS; | |
e196c41b MW |
1427 | } |
1428 | ||
cf16a29d AS |
1429 | METHOD(task_t, process_i, status_t, |
1430 | private_child_create_t *this, message_t *message) | |
c60c7694 | 1431 | { |
a44bb934 | 1432 | enumerator_t *enumerator; |
c60c7694 | 1433 | payload_t *payload; |
be715344 | 1434 | bool no_dh = TRUE, ike_auth = FALSE; |
c60c7694 MW |
1435 | |
1436 | switch (message->get_exchange_type(message)) | |
1437 | { | |
1438 | case IKE_SA_INIT: | |
1439 | return get_nonce(message, &this->other_nonce); | |
1440 | case CREATE_CHILD_SA: | |
1441 | get_nonce(message, &this->other_nonce); | |
1fd5383e | 1442 | no_dh = FALSE; |
c60c7694 | 1443 | break; |
49e8ac05 | 1444 | case IKE_AUTH: |
a44bb934 MW |
1445 | if (this->ike_sa->get_state(this->ike_sa) != IKE_ESTABLISHED) |
1446 | { /* wait until all authentication round completed */ | |
49e8ac05 MW |
1447 | return NEED_MORE; |
1448 | } | |
be715344 | 1449 | ike_auth = TRUE; |
c60c7694 MW |
1450 | default: |
1451 | break; | |
1452 | } | |
1453 | ||
ef33a4ab | 1454 | /* check for erroneous notifies */ |
a44bb934 MW |
1455 | enumerator = message->create_payload_enumerator(message); |
1456 | while (enumerator->enumerate(enumerator, &payload)) | |
c60c7694 | 1457 | { |
3ecfc83c | 1458 | if (payload->get_type(payload) == PLV2_NOTIFY) |
c60c7694 MW |
1459 | { |
1460 | notify_payload_t *notify = (notify_payload_t*)payload; | |
1461 | notify_type_t type = notify->get_notify_type(notify); | |
7daf5226 | 1462 | |
c676f2e2 | 1463 | switch (type) |
c60c7694 | 1464 | { |
c676f2e2 MW |
1465 | /* handle notify errors related to CHILD_SA only */ |
1466 | case NO_PROPOSAL_CHOSEN: | |
1467 | case SINGLE_PAIR_REQUIRED: | |
1468 | case NO_ADDITIONAL_SAS: | |
1469 | case INTERNAL_ADDRESS_FAILURE: | |
1470 | case FAILED_CP_REQUIRED: | |
1471 | case TS_UNACCEPTABLE: | |
1472 | case INVALID_SELECTORS: | |
1473 | { | |
a985db3f MW |
1474 | DBG1(DBG_IKE, "received %N notify, no CHILD_SA built", |
1475 | notify_type_names, type); | |
a44bb934 | 1476 | enumerator->destroy(enumerator); |
e93f386d | 1477 | raise_alerts(this, type); |
866ba8e0 | 1478 | handle_child_sa_failure(this, message); |
c676f2e2 MW |
1479 | /* an error in CHILD_SA creation is not critical */ |
1480 | return SUCCESS; | |
1481 | } | |
b92f11c3 TB |
1482 | case TEMPORARY_FAILURE: |
1483 | { | |
1484 | DBG1(DBG_IKE, "received %N notify, will retry later", | |
1485 | notify_type_names, type); | |
1486 | enumerator->destroy(enumerator); | |
1487 | if (!this->rekey) | |
1488 | { /* the rekey task will retry itself if necessary */ | |
1489 | schedule_delayed_retry(this); | |
1490 | } | |
1491 | return SUCCESS; | |
1492 | } | |
1fd5383e MW |
1493 | case INVALID_KE_PAYLOAD: |
1494 | { | |
1495 | chunk_t data; | |
b12c53ce | 1496 | uint16_t group = MODP_NONE; |
7daf5226 | 1497 | |
1fd5383e | 1498 | data = notify->get_notification_data(notify); |
0d1d19b9 MW |
1499 | if (data.len == sizeof(group)) |
1500 | { | |
1501 | memcpy(&group, data.ptr, data.len); | |
1502 | group = ntohs(group); | |
1503 | } | |
1fd5383e MW |
1504 | DBG1(DBG_IKE, "peer didn't accept DH group %N, " |
1505 | "it requested %N", diffie_hellman_group_names, | |
0d1d19b9 | 1506 | this->dh_group, diffie_hellman_group_names, group); |
82ad53b7 | 1507 | this->retry = TRUE; |
0d1d19b9 | 1508 | this->dh_group = group; |
013857ad | 1509 | this->child_sa->set_state(this->child_sa, CHILD_RETRYING); |
1fd5383e | 1510 | this->public.task.migrate(&this->public.task, this->ike_sa); |
a44bb934 | 1511 | enumerator->destroy(enumerator); |
1fd5383e MW |
1512 | return NEED_MORE; |
1513 | } | |
c676f2e2 | 1514 | default: |
e7099aa2 MW |
1515 | { |
1516 | if (message->get_exchange_type(message) == CREATE_CHILD_SA) | |
1517 | { /* handle notifies if not handled in IKE_AUTH */ | |
1518 | if (type <= 16383) | |
1519 | { | |
1520 | DBG1(DBG_IKE, "received %N notify error", | |
1521 | notify_type_names, type); | |
1522 | enumerator->destroy(enumerator); | |
1523 | return SUCCESS; | |
1524 | } | |
1525 | DBG2(DBG_IKE, "received %N notify", | |
1526 | notify_type_names, type); | |
1527 | } | |
c676f2e2 | 1528 | break; |
e7099aa2 | 1529 | } |
c60c7694 MW |
1530 | } |
1531 | } | |
1532 | } | |
a44bb934 | 1533 | enumerator->destroy(enumerator); |
7daf5226 | 1534 | |
c60c7694 | 1535 | process_payloads(this, message); |
7daf5226 | 1536 | |
d4aad554 TB |
1537 | if (this->ipcomp == IPCOMP_NONE && this->ipcomp_received != IPCOMP_NONE) |
1538 | { | |
a985db3f MW |
1539 | DBG1(DBG_IKE, "received an IPCOMP_SUPPORTED notify without requesting" |
1540 | " one, no CHILD_SA built"); | |
866ba8e0 | 1541 | handle_child_sa_failure(this, message); |
e196c41b | 1542 | return delete_failed_sa(this); |
d4aad554 TB |
1543 | } |
1544 | else if (this->ipcomp != IPCOMP_NONE && this->ipcomp_received == IPCOMP_NONE) | |
1545 | { | |
1546 | DBG1(DBG_IKE, "peer didn't accept our proposed IPComp transforms, " | |
a985db3f | 1547 | "IPComp is disabled"); |
d4aad554 TB |
1548 | this->ipcomp = IPCOMP_NONE; |
1549 | } | |
1550 | else if (this->ipcomp != IPCOMP_NONE && this->ipcomp != this->ipcomp_received) | |
1551 | { | |
a985db3f MW |
1552 | DBG1(DBG_IKE, "received an IPCOMP_SUPPORTED notify we didn't propose, " |
1553 | "no CHILD_SA built"); | |
866ba8e0 | 1554 | handle_child_sa_failure(this, message); |
e196c41b | 1555 | return delete_failed_sa(this); |
d4aad554 | 1556 | } |
7daf5226 | 1557 | |
a777155f MW |
1558 | if (this->dh_failed) |
1559 | { | |
1560 | DBG1(DBG_IKE, "applying DH public value failed"); | |
1561 | handle_child_sa_failure(this, message); | |
1562 | return delete_failed_sa(this); | |
1563 | } | |
1564 | ||
be715344 | 1565 | if (select_and_install(this, no_dh, ike_auth) == SUCCESS) |
195ada0b | 1566 | { |
f669f453 MW |
1567 | if (!this->rekey) |
1568 | { /* invoke the child_up() hook if we are not rekeying */ | |
1569 | charon->bus->child_updown(charon->bus, this->child_sa, TRUE); | |
1570 | } | |
195ada0b | 1571 | } |
866ba8e0 MW |
1572 | else |
1573 | { | |
1574 | handle_child_sa_failure(this, message); | |
e196c41b | 1575 | return delete_failed_sa(this); |
866ba8e0 | 1576 | } |
c60c7694 MW |
1577 | return SUCCESS; |
1578 | } | |
1579 | ||
cf16a29d | 1580 | METHOD(child_create_t, use_reqid, void, |
b12c53ce | 1581 | private_child_create_t *this, uint32_t reqid) |
c60c7694 MW |
1582 | { |
1583 | this->reqid = reqid; | |
1584 | } | |
1585 | ||
85b23888 MW |
1586 | METHOD(child_create_t, use_marks, void, |
1587 | private_child_create_t *this, u_int in, u_int out) | |
1588 | { | |
1589 | this->mark_in = in; | |
1590 | this->mark_out = out; | |
1591 | } | |
1592 | ||
cf16a29d AS |
1593 | METHOD(child_create_t, get_child, child_sa_t*, |
1594 | private_child_create_t *this) | |
195ada0b | 1595 | { |
92275b09 | 1596 | return this->child_sa; |
195ada0b MW |
1597 | } |
1598 | ||
ab24a32e MW |
1599 | METHOD(child_create_t, set_config, void, |
1600 | private_child_create_t *this, child_cfg_t *cfg) | |
1601 | { | |
1602 | DESTROY_IF(this->config); | |
1603 | this->config = cfg; | |
1604 | } | |
1605 | ||
cf16a29d AS |
1606 | METHOD(child_create_t, get_lower_nonce, chunk_t, |
1607 | private_child_create_t *this) | |
7daf5226 | 1608 | { |
eef08590 MW |
1609 | if (memcmp(this->my_nonce.ptr, this->other_nonce.ptr, |
1610 | min(this->my_nonce.len, this->other_nonce.len)) < 0) | |
1611 | { | |
1612 | return this->my_nonce; | |
1613 | } | |
1614 | else | |
1615 | { | |
1616 | return this->other_nonce; | |
1617 | } | |
1618 | } | |
1619 | ||
cf16a29d AS |
1620 | METHOD(task_t, get_type, task_type_t, |
1621 | private_child_create_t *this) | |
1622 | { | |
a09972df | 1623 | return TASK_CHILD_CREATE; |
cf16a29d AS |
1624 | } |
1625 | ||
1626 | METHOD(task_t, migrate, void, | |
1627 | private_child_create_t *this, ike_sa_t *ike_sa) | |
c60c7694 MW |
1628 | { |
1629 | chunk_free(&this->my_nonce); | |
1630 | chunk_free(&this->other_nonce); | |
6d61e334 | 1631 | if (this->tsr) |
c60c7694 MW |
1632 | { |
1633 | this->tsr->destroy_offset(this->tsr, offsetof(traffic_selector_t, destroy)); | |
1634 | } | |
6d61e334 | 1635 | if (this->tsi) |
c60c7694 MW |
1636 | { |
1637 | this->tsi->destroy_offset(this->tsi, offsetof(traffic_selector_t, destroy)); | |
1638 | } | |
1639 | DESTROY_IF(this->child_sa); | |
1640 | DESTROY_IF(this->proposal); | |
32df0d81 | 1641 | DESTROY_IF(this->nonceg); |
1fd5383e | 1642 | DESTROY_IF(this->dh); |
a777155f | 1643 | this->dh_failed = FALSE; |
c60c7694 MW |
1644 | if (this->proposals) |
1645 | { | |
1646 | this->proposals->destroy_offset(this->proposals, offsetof(proposal_t, destroy)); | |
1647 | } | |
7daf5226 | 1648 | |
c60c7694 | 1649 | this->ike_sa = ike_sa; |
12b6a68a | 1650 | this->keymat = (keymat_v2_t*)ike_sa->get_keymat(ike_sa); |
394eb35b | 1651 | this->proposal = NULL; |
c60c7694 MW |
1652 | this->proposals = NULL; |
1653 | this->tsi = NULL; | |
1654 | this->tsr = NULL; | |
1fd5383e | 1655 | this->dh = NULL; |
1729df92 | 1656 | this->nonceg = NULL; |
c60c7694 MW |
1657 | this->child_sa = NULL; |
1658 | this->mode = MODE_TUNNEL; | |
d4aad554 TB |
1659 | this->ipcomp = IPCOMP_NONE; |
1660 | this->ipcomp_received = IPCOMP_NONE; | |
1661 | this->other_cpi = 0; | |
c60c7694 | 1662 | this->reqid = 0; |
85b23888 MW |
1663 | this->mark_in = 0; |
1664 | this->mark_out = 0; | |
195ada0b | 1665 | this->established = FALSE; |
c60c7694 MW |
1666 | } |
1667 | ||
cf16a29d AS |
1668 | METHOD(task_t, destroy, void, |
1669 | private_child_create_t *this) | |
c60c7694 MW |
1670 | { |
1671 | chunk_free(&this->my_nonce); | |
1672 | chunk_free(&this->other_nonce); | |
0a3ca290 | 1673 | if (this->tsr) |
c60c7694 MW |
1674 | { |
1675 | this->tsr->destroy_offset(this->tsr, offsetof(traffic_selector_t, destroy)); | |
1676 | } | |
0a3ca290 | 1677 | if (this->tsi) |
c60c7694 MW |
1678 | { |
1679 | this->tsi->destroy_offset(this->tsi, offsetof(traffic_selector_t, destroy)); | |
1680 | } | |
195ada0b MW |
1681 | if (!this->established) |
1682 | { | |
1683 | DESTROY_IF(this->child_sa); | |
1684 | } | |
a13c013b MW |
1685 | DESTROY_IF(this->packet_tsi); |
1686 | DESTROY_IF(this->packet_tsr); | |
c60c7694 | 1687 | DESTROY_IF(this->proposal); |
1fd5383e | 1688 | DESTROY_IF(this->dh); |
c60c7694 MW |
1689 | if (this->proposals) |
1690 | { | |
1691 | this->proposals->destroy_offset(this->proposals, offsetof(proposal_t, destroy)); | |
1692 | } | |
7daf5226 | 1693 | |
e0fe7651 | 1694 | DESTROY_IF(this->config); |
72376234 | 1695 | DESTROY_IF(this->nonceg); |
c60c7694 MW |
1696 | free(this); |
1697 | } | |
1698 | ||
1699 | /* | |
1700 | * Described in header. | |
1701 | */ | |
f669f453 MW |
1702 | child_create_t *child_create_create(ike_sa_t *ike_sa, |
1703 | child_cfg_t *config, bool rekey, | |
a13c013b | 1704 | traffic_selector_t *tsi, traffic_selector_t *tsr) |
c60c7694 | 1705 | { |
cf16a29d AS |
1706 | private_child_create_t *this; |
1707 | ||
1708 | INIT(this, | |
1709 | .public = { | |
1710 | .get_child = _get_child, | |
ab24a32e | 1711 | .set_config = _set_config, |
cf16a29d AS |
1712 | .get_lower_nonce = _get_lower_nonce, |
1713 | .use_reqid = _use_reqid, | |
85b23888 | 1714 | .use_marks = _use_marks, |
cf16a29d AS |
1715 | .task = { |
1716 | .get_type = _get_type, | |
1717 | .migrate = _migrate, | |
1718 | .destroy = _destroy, | |
1719 | }, | |
1720 | }, | |
1721 | .ike_sa = ike_sa, | |
1722 | .config = config, | |
1723 | .packet_tsi = tsi ? tsi->clone(tsi) : NULL, | |
1724 | .packet_tsr = tsr ? tsr->clone(tsr) : NULL, | |
1725 | .dh_group = MODP_NONE, | |
a0563846 | 1726 | .keymat = (keymat_v2_t*)ike_sa->get_keymat(ike_sa), |
cf16a29d AS |
1727 | .mode = MODE_TUNNEL, |
1728 | .tfcv3 = TRUE, | |
1729 | .ipcomp = IPCOMP_NONE, | |
1730 | .ipcomp_received = IPCOMP_NONE, | |
1731 | .rekey = rekey, | |
82ad53b7 | 1732 | .retry = FALSE, |
cf16a29d | 1733 | ); |
72376234 | 1734 | |
e0fe7651 | 1735 | if (config) |
c60c7694 | 1736 | { |
cf16a29d AS |
1737 | this->public.task.build = _build_i; |
1738 | this->public.task.process = _process_i; | |
905ab99f | 1739 | this->initiator = TRUE; |
c60c7694 MW |
1740 | } |
1741 | else | |
1742 | { | |
cf16a29d AS |
1743 | this->public.task.build = _build_r; |
1744 | this->public.task.process = _process_r; | |
c60c7694 MW |
1745 | this->initiator = FALSE; |
1746 | } | |
c60c7694 MW |
1747 | return &this->public; |
1748 | } |