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Commit | Line | Data |
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3ebebc5e | 1 | /* |
13771206 | 2 | * Copyright (C) 2006-2023 Tobias Brunner |
1003cf23 | 3 | * Copyright (C) 2016 Andreas Steffen |
a985db3f | 4 | * Copyright (C) 2005-2008 Martin Willi |
d4aad554 | 5 | * Copyright (C) 2006 Daniel Roethlisberger |
c71d53ba | 6 | * Copyright (C) 2005 Jan Hutter |
19ef2aec TB |
7 | * |
8 | * Copyright (C) secunet Security Networks AG | |
3ebebc5e MW |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License as published by the | |
12 | * Free Software Foundation; either version 2 of the License, or (at your | |
13 | * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
17 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
18 | * for more details. | |
19 | */ | |
20 | ||
60356f33 | 21 | #define _GNU_SOURCE |
b92eef28 | 22 | #include "child_sa.h" |
3ebebc5e | 23 | |
a095243f | 24 | #include <stdio.h> |
4c23a8c9 | 25 | #include <string.h> |
e13389a7 | 26 | #include <time.h> |
4c23a8c9 | 27 | |
aeda79ff | 28 | #include <daemon.h> |
2745ae26 | 29 | #include <collections/array.h> |
aeda79ff | 30 | |
a985db3f | 31 | ENUM(child_sa_state_names, CHILD_CREATED, CHILD_DESTROYING, |
60356f33 MW |
32 | "CREATED", |
33 | "ROUTED", | |
ea625fab | 34 | "INSTALLING", |
60356f33 | 35 | "INSTALLED", |
ad3af574 | 36 | "UPDATING", |
60356f33 | 37 | "REKEYING", |
70728eb1 | 38 | "REKEYED", |
013857ad | 39 | "RETRYING", |
60356f33 | 40 | "DELETING", |
16898026 | 41 | "DELETED", |
a985db3f | 42 | "DESTROYING", |
60356f33 | 43 | ); |
bcb95ced | 44 | |
2c116ef5 | 45 | ENUM_FLAGS(child_sa_outbound_state_names, CHILD_OUTBOUND_REGISTERED, CHILD_OUTBOUND_POLICIES, |
927103ec | 46 | "NONE", |
afbea8ce | 47 | "REGISTERED", |
2c116ef5 TB |
48 | "SA", |
49 | "POLICIES", | |
afbea8ce TB |
50 | ); |
51 | ||
3ebebc5e MW |
52 | typedef struct private_child_sa_t private_child_sa_t; |
53 | ||
54 | /** | |
7b8bae99 | 55 | * Private data of a child_sa_t object. |
3ebebc5e MW |
56 | */ |
57 | struct private_child_sa_t { | |
58 | /** | |
144f676c | 59 | * Public interface of child_sa_t. |
3ebebc5e MW |
60 | */ |
61 | child_sa_t public; | |
7daf5226 | 62 | |
80853d84 MW |
63 | /** |
64 | * address of us | |
65 | */ | |
66 | host_t *my_addr; | |
7daf5226 | 67 | |
3efbf983 | 68 | /** |
80853d84 | 69 | * address of remote |
3efbf983 | 70 | */ |
80853d84 | 71 | host_t *other_addr; |
7daf5226 | 72 | |
3efbf983 | 73 | /** |
80853d84 | 74 | * our actually used SPI, 0 if unused |
3efbf983 | 75 | */ |
b12c53ce | 76 | uint32_t my_spi; |
7daf5226 | 77 | |
aeda79ff | 78 | /** |
80853d84 | 79 | * others used SPI, 0 if unused |
aeda79ff | 80 | */ |
b12c53ce | 81 | uint32_t other_spi; |
7daf5226 | 82 | |
8dfbe71b | 83 | /** |
80853d84 | 84 | * our Compression Parameter Index (CPI) used, 0 if unused |
8dfbe71b | 85 | */ |
b12c53ce | 86 | uint16_t my_cpi; |
7daf5226 | 87 | |
8dfbe71b | 88 | /** |
80853d84 | 89 | * others Compression Parameter Index (CPI) used, 0 if unused |
8dfbe71b | 90 | */ |
b12c53ce | 91 | uint16_t other_cpi; |
7daf5226 | 92 | |
5d187bd2 | 93 | /** |
2745ae26 | 94 | * Array for local traffic selectors |
5d187bd2 | 95 | */ |
2745ae26 | 96 | array_t *my_ts; |
7daf5226 | 97 | |
80853d84 | 98 | /** |
2745ae26 | 99 | * Array for remote traffic selectors |
80853d84 | 100 | */ |
2745ae26 | 101 | array_t *other_ts; |
7daf5226 | 102 | |
8a3a389e TB |
103 | /** |
104 | * Outbound encryption key cached during a rekeying | |
105 | */ | |
106 | chunk_t encr_r; | |
107 | ||
108 | /** | |
109 | * Outbound integrity key cached during a rekeying | |
110 | */ | |
111 | chunk_t integ_r; | |
112 | ||
639af09b TB |
113 | /** |
114 | * Whether the registered outbound SA was created as initiator | |
115 | */ | |
116 | bool initiator; | |
117 | ||
8a3a389e TB |
118 | /** |
119 | * Whether the outbound SA has only been registered yet during a rekeying | |
120 | */ | |
afbea8ce | 121 | child_sa_outbound_state_t outbound_state; |
8a3a389e | 122 | |
9118fd39 TB |
123 | /** |
124 | * Whether the inbound SA has been installed | |
125 | */ | |
126 | bool inbound_installed; | |
127 | ||
8a3a389e TB |
128 | /** |
129 | * Whether the peer supports TFCv3 | |
130 | */ | |
131 | bool tfcv3; | |
132 | ||
cad13450 TB |
133 | /** |
134 | * The outbound SPI of the CHILD_SA that replaced this one during a rekeying | |
135 | */ | |
136 | uint32_t rekey_spi; | |
137 | ||
c0593835 | 138 | /** |
80853d84 | 139 | * Protocol used to protect this SA, ESP|AH |
c0593835 | 140 | */ |
80853d84 | 141 | protocol_id_t protocol; |
7daf5226 | 142 | |
3c7e72f5 | 143 | /** |
80853d84 | 144 | * reqid used for this child_sa |
3c7e72f5 | 145 | */ |
b12c53ce | 146 | uint32_t reqid; |
7daf5226 | 147 | |
0da97f50 MW |
148 | /** |
149 | * Did we allocate/confirm and must release the reqid? | |
150 | */ | |
151 | bool reqid_allocated; | |
152 | ||
3665adef TB |
153 | /** |
154 | * Is the reqid statically configured | |
155 | */ | |
156 | bool static_reqid; | |
157 | ||
ad1b5345 | 158 | /** |
4ec397b8 MW |
159 | * Unique CHILD_SA identifier |
160 | */ | |
b12c53ce | 161 | uint32_t unique_id; |
4ec397b8 | 162 | |
ad1b5345 | 163 | /** |
b3ab7a48 | 164 | * Whether FWD policies in the outbound direction should be installed |
ad1b5345 TB |
165 | */ |
166 | bool policies_fwd_out; | |
167 | ||
a6014d99 TB |
168 | /** |
169 | * Inbound interface ID | |
170 | */ | |
171 | uint32_t if_id_in; | |
172 | ||
173 | /** | |
174 | * Outbound interface ID | |
175 | */ | |
176 | uint32_t if_id_out; | |
177 | ||
ee26c537 AS |
178 | /** |
179 | * inbound mark used for this child_sa | |
180 | */ | |
181 | mark_t mark_in; | |
182 | ||
183 | /** | |
184 | * outbound mark used for this child_sa | |
185 | */ | |
186 | mark_t mark_out; | |
187 | ||
139d6558 TB |
188 | /** |
189 | * Security label | |
190 | */ | |
191 | sec_label_t *label; | |
192 | ||
a2a3fb3e | 193 | /** |
6e10aead | 194 | * absolute time when rekeying is scheduled |
a2a3fb3e | 195 | */ |
6e10aead | 196 | time_t rekey_time; |
7daf5226 | 197 | |
e70d5576 | 198 | /** |
6e10aead | 199 | * absolute time when the SA expires |
e70d5576 | 200 | */ |
6e10aead | 201 | time_t expire_time; |
7daf5226 | 202 | |
763e0353 MW |
203 | /** |
204 | * absolute time when SA has been installed | |
205 | */ | |
206 | time_t install_time; | |
207 | ||
bcb95ced MW |
208 | /** |
209 | * state of the CHILD_SA | |
210 | */ | |
211 | child_sa_state_t state; | |
fff4ee8a | 212 | |
c8f7a114 TB |
213 | /** |
214 | * TRUE if this CHILD_SA is used to install trap policies | |
215 | */ | |
216 | bool trap; | |
217 | ||
1239c6f4 | 218 | /** |
fc2d1c42 | 219 | * Specifies if UDP encapsulation is enabled (NAT traversal) |
1239c6f4 | 220 | */ |
fc2d1c42 | 221 | bool encap; |
7daf5226 | 222 | |
d4aad554 TB |
223 | /** |
224 | * Specifies the IPComp transform used (IPCOMP_NONE if disabled) | |
225 | */ | |
226 | ipcomp_transform_t ipcomp; | |
7daf5226 | 227 | |
7652be89 MW |
228 | /** |
229 | * mode this SA uses, tunnel/transport | |
230 | */ | |
a341a68f | 231 | ipsec_mode_t mode; |
7daf5226 | 232 | |
4c401ea2 MW |
233 | /** |
234 | * Action to enforce if peer closes the CHILD_SA | |
235 | */ | |
236 | action_t close_action; | |
237 | ||
238 | /** | |
239 | * Action to enforce if peer is considered dead | |
240 | */ | |
241 | action_t dpd_action; | |
242 | ||
80853d84 | 243 | /** |
7b3814f7 MW |
244 | * selected proposal |
245 | */ | |
246 | proposal_t *proposal; | |
7daf5226 | 247 | |
c60c7694 | 248 | /** |
e0fe7651 | 249 | * config used to create this child |
c60c7694 | 250 | */ |
e0fe7651 | 251 | child_cfg_t *config; |
3f720dc7 AS |
252 | |
253 | /** | |
254 | * time of last use in seconds (inbound) | |
255 | */ | |
c99458e9 | 256 | time_t my_usetime; |
3f720dc7 AS |
257 | |
258 | /** | |
259 | * time of last use in seconds (outbound) | |
260 | */ | |
c99458e9 | 261 | time_t other_usetime; |
3f720dc7 AS |
262 | |
263 | /** | |
264 | * last number of inbound bytes | |
265 | */ | |
b12c53ce | 266 | uint64_t my_usebytes; |
3f720dc7 AS |
267 | |
268 | /** | |
269 | * last number of outbound bytes | |
270 | */ | |
b12c53ce | 271 | uint64_t other_usebytes; |
7eeeb1c7 MW |
272 | |
273 | /** | |
274 | * last number of inbound packets | |
275 | */ | |
b12c53ce | 276 | uint64_t my_usepackets; |
7eeeb1c7 MW |
277 | |
278 | /** | |
ba5b5f03 | 279 | * last number of outbound packets |
7eeeb1c7 | 280 | */ |
b12c53ce | 281 | uint64_t other_usepackets; |
3ebebc5e MW |
282 | }; |
283 | ||
9f166d9a | 284 | /** |
ea43f8ff | 285 | * Convert an IKEv2 specific protocol identifier to the IP protocol identifier |
9f166d9a | 286 | */ |
b12c53ce | 287 | static inline uint8_t proto_ike2ip(protocol_id_t protocol) |
9f166d9a TB |
288 | { |
289 | switch (protocol) | |
290 | { | |
291 | case PROTO_ESP: | |
292 | return IPPROTO_ESP; | |
293 | case PROTO_AH: | |
294 | return IPPROTO_AH; | |
295 | default: | |
296 | return protocol; | |
297 | } | |
298 | } | |
299 | ||
ea43f8ff TB |
300 | /** |
301 | * Returns the mark to use on the inbound SA | |
302 | */ | |
303 | static inline mark_t mark_in_sa(private_child_sa_t *this) | |
304 | { | |
305 | if (this->config->has_option(this->config, OPT_MARK_IN_SA)) | |
306 | { | |
307 | return this->mark_in; | |
308 | } | |
309 | return (mark_t){}; | |
310 | } | |
311 | ||
139d6558 TB |
312 | /** |
313 | * Possible uses for security labels | |
314 | */ | |
315 | typedef enum { | |
316 | LABEL_USE_REQID, | |
317 | LABEL_USE_POLICY, | |
318 | LABEL_USE_SA, | |
319 | } label_use_t; | |
320 | ||
321 | /** | |
322 | * Returns the security label for either policies, SAs or reqids. | |
323 | */ | |
324 | static inline sec_label_t *label_for(private_child_sa_t *this, label_use_t use) | |
325 | { | |
326 | /* For SELinux we use the configured label for policies and reqid but the | |
327 | * negotiated one for the SAs. That's because the label on the policies is | |
328 | * usually a generic one that matches specific labels on flows, which will | |
329 | * trigger an acquire if no matching SA with that label exists yet. | |
330 | * When that SA is later installed, we want to avoid having to install | |
331 | * policies in the kernel that will never get used, so we use the configured | |
332 | * label again. | |
333 | * Note that while the labels don't have to be equal, they are both either | |
334 | * NULL or defined. | |
335 | */ | |
336 | if (this->config->get_label_mode(this->config) == SEC_LABEL_MODE_SELINUX) | |
337 | { | |
338 | switch (use) | |
339 | { | |
340 | case LABEL_USE_REQID: | |
341 | case LABEL_USE_POLICY: | |
342 | return this->config->get_label(this->config); | |
343 | case LABEL_USE_SA: | |
344 | return this->label; | |
345 | } | |
346 | } | |
347 | /* for the simple label mode we don't pass labels to the kernel, so we don't | |
348 | * use it to acquire unique reqids either */ | |
349 | return NULL; | |
350 | } | |
351 | ||
9d941742 TB |
352 | METHOD(child_sa_t, get_name, char*, |
353 | private_child_sa_t *this) | |
9be547c0 | 354 | { |
e0fe7651 | 355 | return this->config->get_name(this->config); |
9be547c0 MW |
356 | } |
357 | ||
b12c53ce | 358 | METHOD(child_sa_t, get_reqid, uint32_t, |
9d941742 | 359 | private_child_sa_t *this) |
32b6500f MW |
360 | { |
361 | return this->reqid; | |
362 | } | |
3aaf7908 | 363 | |
ff269f7f TB |
364 | METHOD(child_sa_t, get_reqid_ref, uint32_t, |
365 | private_child_sa_t *this) | |
366 | { | |
367 | if ((this->reqid_allocated || (!this->static_reqid && this->reqid)) && | |
368 | charon->kernel->ref_reqid(charon->kernel, this->reqid) == SUCCESS) | |
369 | { | |
370 | return this->reqid; | |
371 | } | |
372 | return 0; | |
373 | } | |
374 | ||
b12c53ce | 375 | METHOD(child_sa_t, get_unique_id, uint32_t, |
4ec397b8 MW |
376 | private_child_sa_t *this) |
377 | { | |
378 | return this->unique_id; | |
379 | } | |
380 | ||
9d941742 TB |
381 | METHOD(child_sa_t, get_config, child_cfg_t*, |
382 | private_child_sa_t *this) | |
3aaf7908 MW |
383 | { |
384 | return this->config; | |
385 | } | |
386 | ||
9d941742 TB |
387 | METHOD(child_sa_t, set_state, void, |
388 | private_child_sa_t *this, child_sa_state_t state) | |
3aaf7908 | 389 | { |
859dae25 TB |
390 | if (this->state != state) |
391 | { | |
392 | DBG2(DBG_CHD, "CHILD_SA %s{%d} state change: %N => %N", | |
393 | get_name(this), this->unique_id, | |
394 | child_sa_state_names, this->state, | |
395 | child_sa_state_names, state); | |
396 | charon->bus->child_state_change(charon->bus, &this->public, state); | |
397 | this->state = state; | |
398 | } | |
3aaf7908 MW |
399 | } |
400 | ||
9d941742 TB |
401 | METHOD(child_sa_t, get_state, child_sa_state_t, |
402 | private_child_sa_t *this) | |
3aaf7908 MW |
403 | { |
404 | return this->state; | |
405 | } | |
406 | ||
afbea8ce TB |
407 | METHOD(child_sa_t, get_outbound_state, child_sa_outbound_state_t, |
408 | private_child_sa_t *this) | |
409 | { | |
410 | return this->outbound_state; | |
411 | } | |
412 | ||
b12c53ce | 413 | METHOD(child_sa_t, get_spi, uint32_t, |
9d941742 | 414 | private_child_sa_t *this, bool inbound) |
8d77edde | 415 | { |
80853d84 | 416 | return inbound ? this->my_spi : this->other_spi; |
8d77edde MW |
417 | } |
418 | ||
b12c53ce | 419 | METHOD(child_sa_t, get_cpi, uint16_t, |
9d941742 | 420 | private_child_sa_t *this, bool inbound) |
66da78b4 | 421 | { |
80853d84 | 422 | return inbound ? this->my_cpi : this->other_cpi; |
66da78b4 AS |
423 | } |
424 | ||
9d941742 TB |
425 | METHOD(child_sa_t, get_protocol, protocol_id_t, |
426 | private_child_sa_t *this) | |
8d77edde MW |
427 | { |
428 | return this->protocol; | |
429 | } | |
32b6500f | 430 | |
9d941742 TB |
431 | METHOD(child_sa_t, set_protocol, void, |
432 | private_child_sa_t *this, protocol_id_t protocol) | |
3aaf7908 MW |
433 | { |
434 | this->protocol = protocol; | |
435 | } | |
436 | ||
9d941742 TB |
437 | METHOD(child_sa_t, get_mode, ipsec_mode_t, |
438 | private_child_sa_t *this) | |
80853d84 MW |
439 | { |
440 | return this->mode; | |
441 | } | |
442 | ||
9d941742 TB |
443 | METHOD(child_sa_t, set_mode, void, |
444 | private_child_sa_t *this, ipsec_mode_t mode) | |
3aaf7908 MW |
445 | { |
446 | this->mode = mode; | |
447 | } | |
448 | ||
9d941742 TB |
449 | METHOD(child_sa_t, has_encap, bool, |
450 | private_child_sa_t *this) | |
82d20c05 MW |
451 | { |
452 | return this->encap; | |
453 | } | |
454 | ||
9d941742 TB |
455 | METHOD(child_sa_t, get_ipcomp, ipcomp_transform_t, |
456 | private_child_sa_t *this) | |
82d20c05 MW |
457 | { |
458 | return this->ipcomp; | |
459 | } | |
460 | ||
9d941742 TB |
461 | METHOD(child_sa_t, set_ipcomp, void, |
462 | private_child_sa_t *this, ipcomp_transform_t ipcomp) | |
bcb95ced | 463 | { |
3aaf7908 | 464 | this->ipcomp = ipcomp; |
bcb95ced MW |
465 | } |
466 | ||
9d941742 TB |
467 | METHOD(child_sa_t, set_close_action, void, |
468 | private_child_sa_t *this, action_t action) | |
4c401ea2 MW |
469 | { |
470 | this->close_action = action; | |
471 | } | |
472 | ||
9d941742 TB |
473 | METHOD(child_sa_t, get_close_action, action_t, |
474 | private_child_sa_t *this) | |
4c401ea2 MW |
475 | { |
476 | return this->close_action; | |
477 | } | |
478 | ||
9d941742 TB |
479 | METHOD(child_sa_t, set_dpd_action, void, |
480 | private_child_sa_t *this, action_t action) | |
4c401ea2 MW |
481 | { |
482 | this->dpd_action = action; | |
483 | } | |
484 | ||
9d941742 TB |
485 | METHOD(child_sa_t, get_dpd_action, action_t, |
486 | private_child_sa_t *this) | |
4c401ea2 MW |
487 | { |
488 | return this->dpd_action; | |
489 | } | |
490 | ||
9d941742 TB |
491 | METHOD(child_sa_t, get_proposal, proposal_t*, |
492 | private_child_sa_t *this) | |
c60c7694 | 493 | { |
3aaf7908 MW |
494 | return this->proposal; |
495 | } | |
496 | ||
9d941742 TB |
497 | METHOD(child_sa_t, set_proposal, void, |
498 | private_child_sa_t *this, proposal_t *proposal) | |
3aaf7908 | 499 | { |
a2cb2c9c | 500 | this->proposal = proposal->clone(proposal, 0); |
3aaf7908 MW |
501 | } |
502 | ||
553bb787 MW |
503 | METHOD(child_sa_t, create_ts_enumerator, enumerator_t*, |
504 | private_child_sa_t *this, bool local) | |
3aaf7908 | 505 | { |
553bb787 MW |
506 | if (local) |
507 | { | |
2745ae26 | 508 | return array_create_enumerator(this->my_ts); |
553bb787 | 509 | } |
2745ae26 | 510 | return array_create_enumerator(this->other_ts); |
c60c7694 MW |
511 | } |
512 | ||
1df106bf MW |
513 | typedef struct policy_enumerator_t policy_enumerator_t; |
514 | ||
515 | /** | |
516 | * Private policy enumerator | |
517 | */ | |
518 | struct policy_enumerator_t { | |
519 | /** implements enumerator_t */ | |
520 | enumerator_t public; | |
521 | /** enumerator over own TS */ | |
522 | enumerator_t *mine; | |
523 | /** enumerator over others TS */ | |
524 | enumerator_t *other; | |
2745ae26 MW |
525 | /** array of others TS, to recreate enumerator */ |
526 | array_t *array; | |
6df2837a MW |
527 | /** currently enumerating TS for "me" side */ |
528 | traffic_selector_t *ts; | |
1df106bf MW |
529 | }; |
530 | ||
9d941742 | 531 | METHOD(enumerator_t, policy_enumerate, bool, |
95a63bf2 | 532 | policy_enumerator_t *this, va_list args) |
1df106bf | 533 | { |
95a63bf2 TB |
534 | traffic_selector_t *other_ts, **my_out, **other_out; |
535 | ||
536 | VA_ARGS_VGET(args, my_out, other_out); | |
7daf5226 | 537 | |
6df2837a | 538 | while (this->ts || this->mine->enumerate(this->mine, &this->ts)) |
1df106bf | 539 | { |
6df2837a MW |
540 | if (!this->other->enumerate(this->other, &other_ts)) |
541 | { /* end of others list, restart with new of mine */ | |
542 | this->other->destroy(this->other); | |
2745ae26 | 543 | this->other = array_create_enumerator(this->array); |
6df2837a MW |
544 | this->ts = NULL; |
545 | continue; | |
546 | } | |
547 | if (this->ts->get_type(this->ts) != other_ts->get_type(other_ts)) | |
548 | { /* family mismatch */ | |
549 | continue; | |
550 | } | |
551 | if (this->ts->get_protocol(this->ts) && | |
552 | other_ts->get_protocol(other_ts) && | |
553 | this->ts->get_protocol(this->ts) != other_ts->get_protocol(other_ts)) | |
554 | { /* protocol mismatch */ | |
555 | continue; | |
1df106bf | 556 | } |
a6e0f14f TB |
557 | if (my_out) |
558 | { | |
559 | *my_out = this->ts; | |
560 | } | |
561 | if (other_out) | |
562 | { | |
563 | *other_out = other_ts; | |
564 | } | |
6df2837a | 565 | return TRUE; |
1df106bf MW |
566 | } |
567 | return FALSE; | |
568 | } | |
569 | ||
9d941742 TB |
570 | METHOD(enumerator_t, policy_destroy, void, |
571 | policy_enumerator_t *this) | |
1df106bf MW |
572 | { |
573 | this->mine->destroy(this->mine); | |
574 | this->other->destroy(this->other); | |
575 | free(this); | |
576 | } | |
577 | ||
8f4cfe96 TB |
578 | /** |
579 | * Create an enumerator over two lists of traffic selectors, returning all the | |
580 | * pairs of traffic selectors from the first and second list. | |
581 | */ | |
582 | static enumerator_t *create_policy_enumerator_internal(array_t *my_ts, | |
583 | array_t *other_ts) | |
1df106bf | 584 | { |
9d941742 | 585 | policy_enumerator_t *e; |
7daf5226 | 586 | |
9d941742 TB |
587 | INIT(e, |
588 | .public = { | |
95a63bf2 TB |
589 | .enumerate = enumerator_enumerate_default, |
590 | .venumerate = _policy_enumerate, | |
9d941742 TB |
591 | .destroy = _policy_destroy, |
592 | }, | |
8f4cfe96 TB |
593 | .mine = array_create_enumerator(my_ts), |
594 | .other = array_create_enumerator(other_ts), | |
595 | .array = other_ts, | |
9d941742 TB |
596 | .ts = NULL, |
597 | ); | |
7daf5226 | 598 | |
1df106bf MW |
599 | return &e->public; |
600 | } | |
601 | ||
8f4cfe96 TB |
602 | METHOD(child_sa_t, create_policy_enumerator, enumerator_t*, |
603 | private_child_sa_t *this) | |
604 | { | |
605 | return create_policy_enumerator_internal(this->my_ts, this->other_ts); | |
606 | } | |
607 | ||
dd83c6d4 TB |
608 | /** |
609 | * update the cached usebytes | |
610 | * returns SUCCESS if the usebytes have changed, FAILED if not or no SPIs | |
611 | * are available, and NOT_SUPPORTED if the kernel interface does not support | |
99dd4291 | 612 | * querying the usebytes. |
dd83c6d4 | 613 | */ |
c3a78360 | 614 | static status_t update_usebytes(private_child_sa_t *this, bool inbound) |
dd83c6d4 TB |
615 | { |
616 | status_t status = FAILED; | |
b12c53ce | 617 | uint64_t bytes, packets; |
c99458e9 | 618 | time_t time; |
7daf5226 | 619 | |
dd83c6d4 TB |
620 | if (inbound) |
621 | { | |
9118fd39 | 622 | if (this->my_spi && this->inbound_installed) |
dd83c6d4 | 623 | { |
89da06ac TB |
624 | kernel_ipsec_sa_id_t id = { |
625 | .src = this->other_addr, | |
626 | .dst = this->my_addr, | |
627 | .spi = this->my_spi, | |
628 | .proto = proto_ike2ip(this->protocol), | |
ea43f8ff | 629 | .mark = mark_in_sa(this), |
a6014d99 | 630 | .if_id = this->if_id_in, |
89da06ac TB |
631 | }; |
632 | kernel_ipsec_query_sa_t query = {}; | |
633 | ||
634 | status = charon->kernel->query_sa(charon->kernel, &id, &query, | |
635 | &bytes, &packets, &time); | |
dd83c6d4 TB |
636 | if (status == SUCCESS) |
637 | { | |
638 | if (bytes > this->my_usebytes) | |
639 | { | |
640 | this->my_usebytes = bytes; | |
7eeeb1c7 | 641 | this->my_usepackets = packets; |
5c12700f MW |
642 | if (time) |
643 | { | |
644 | this->my_usetime = time; | |
645 | } | |
dd83c6d4 | 646 | } |
1042b919 TE |
647 | else |
648 | { | |
649 | status = FAILED; | |
650 | } | |
dd83c6d4 TB |
651 | } |
652 | } | |
653 | } | |
654 | else | |
655 | { | |
2c116ef5 | 656 | if (this->other_spi && (this->outbound_state & CHILD_OUTBOUND_SA)) |
dd83c6d4 | 657 | { |
89da06ac TB |
658 | kernel_ipsec_sa_id_t id = { |
659 | .src = this->my_addr, | |
660 | .dst = this->other_addr, | |
661 | .spi = this->other_spi, | |
662 | .proto = proto_ike2ip(this->protocol), | |
663 | .mark = this->mark_out, | |
a6014d99 | 664 | .if_id = this->if_id_out, |
89da06ac TB |
665 | }; |
666 | kernel_ipsec_query_sa_t query = {}; | |
667 | ||
668 | status = charon->kernel->query_sa(charon->kernel, &id, &query, | |
669 | &bytes, &packets, &time); | |
dd83c6d4 TB |
670 | if (status == SUCCESS) |
671 | { | |
672 | if (bytes > this->other_usebytes) | |
673 | { | |
674 | this->other_usebytes = bytes; | |
7eeeb1c7 | 675 | this->other_usepackets = packets; |
5c12700f MW |
676 | if (time) |
677 | { | |
678 | this->other_usetime = time; | |
679 | } | |
dd83c6d4 | 680 | } |
1042b919 TE |
681 | else |
682 | { | |
683 | status = FAILED; | |
684 | } | |
dd83c6d4 TB |
685 | } |
686 | } | |
687 | } | |
688 | return status; | |
689 | } | |
690 | ||
a3ce4bc2 | 691 | /** |
c3a78360 | 692 | * updates the cached usetime |
a3ce4bc2 | 693 | */ |
5c12700f | 694 | static bool update_usetime(private_child_sa_t *this, bool inbound) |
a3ce4bc2 | 695 | { |
1df106bf | 696 | enumerator_t *enumerator; |
6e10aead | 697 | traffic_selector_t *my_ts, *other_ts; |
d7083b65 | 698 | time_t last_use = 0; |
7daf5226 | 699 | |
1df106bf MW |
700 | enumerator = create_policy_enumerator(this); |
701 | while (enumerator->enumerate(enumerator, &my_ts, &other_ts)) | |
a3ce4bc2 | 702 | { |
d7083b65 | 703 | time_t in, out, fwd; |
7daf5226 | 704 | |
dd83c6d4 | 705 | if (inbound) |
a3ce4bc2 | 706 | { |
89da06ac TB |
707 | kernel_ipsec_policy_id_t id = { |
708 | .dir = POLICY_IN, | |
709 | .src_ts = other_ts, | |
710 | .dst_ts = my_ts, | |
711 | .mark = this->mark_in, | |
a6014d99 | 712 | .if_id = this->if_id_in, |
139d6558 | 713 | .label = label_for(this, LABEL_USE_POLICY), |
89da06ac TB |
714 | }; |
715 | kernel_ipsec_query_policy_t query = {}; | |
716 | ||
717 | if (charon->kernel->query_policy(charon->kernel, &id, &query, | |
718 | &in) == SUCCESS) | |
6e10aead MW |
719 | { |
720 | last_use = max(last_use, in); | |
721 | } | |
ce42db09 | 722 | if (this->mode != MODE_TRANSPORT) |
6e10aead | 723 | { |
89da06ac TB |
724 | id.dir = POLICY_FWD; |
725 | if (charon->kernel->query_policy(charon->kernel, &id, &query, | |
726 | &fwd) == SUCCESS) | |
d487b4b7 AS |
727 | { |
728 | last_use = max(last_use, fwd); | |
729 | } | |
6e10aead | 730 | } |
a3ce4bc2 | 731 | } |
6e10aead | 732 | else |
a3ce4bc2 | 733 | { |
89da06ac TB |
734 | kernel_ipsec_policy_id_t id = { |
735 | .dir = POLICY_OUT, | |
736 | .src_ts = my_ts, | |
737 | .dst_ts = other_ts, | |
738 | .mark = this->mark_out, | |
a6014d99 | 739 | .if_id = this->if_id_out, |
c26e4330 | 740 | .interface = this->config->get_interface(this->config), |
139d6558 | 741 | .label = label_for(this, LABEL_USE_POLICY), |
89da06ac TB |
742 | }; |
743 | kernel_ipsec_query_policy_t query = {}; | |
744 | ||
745 | if (charon->kernel->query_policy(charon->kernel, &id, &query, | |
746 | &out) == SUCCESS) | |
6e10aead MW |
747 | { |
748 | last_use = max(last_use, out); | |
749 | } | |
a3ce4bc2 MW |
750 | } |
751 | } | |
1df106bf | 752 | enumerator->destroy(enumerator); |
99dd4291 AS |
753 | |
754 | if (last_use == 0) | |
755 | { | |
5c12700f | 756 | return FALSE; |
99dd4291 | 757 | } |
3f720dc7 AS |
758 | if (inbound) |
759 | { | |
760 | this->my_usetime = last_use; | |
761 | } | |
762 | else | |
763 | { | |
764 | this->other_usetime = last_use; | |
765 | } | |
5c12700f | 766 | return TRUE; |
6e10aead MW |
767 | } |
768 | ||
9d941742 | 769 | METHOD(child_sa_t, get_usestats, void, |
d954a208 | 770 | private_child_sa_t *this, bool inbound, |
b12c53ce | 771 | time_t *time, uint64_t *bytes, uint64_t *packets) |
2ad51539 | 772 | { |
6301b880 TB |
773 | status_t status = NOT_SUPPORTED; |
774 | bool sa_use_time; | |
775 | ||
776 | sa_use_time = charon->kernel->get_features(charon->kernel) & KERNEL_SA_USE_TIME; | |
777 | ||
778 | if (bytes || packets || sa_use_time) | |
99dd4291 | 779 | { |
6301b880 TB |
780 | status = update_usebytes(this, inbound); |
781 | } | |
782 | if (time && !sa_use_time && status != FAILED) | |
783 | { /* query policies only if last use time is not available from SAs and | |
784 | * there was either traffic or querying the SA wasn't supported */ | |
785 | update_usetime(this, inbound); | |
c3a78360 TB |
786 | } |
787 | if (time) | |
788 | { | |
789 | *time = inbound ? this->my_usetime : this->other_usetime; | |
790 | } | |
791 | if (bytes) | |
792 | { | |
793 | *bytes = inbound ? this->my_usebytes : this->other_usebytes; | |
794 | } | |
d954a208 MW |
795 | if (packets) |
796 | { | |
797 | *packets = inbound ? this->my_usepackets : this->other_usepackets; | |
798 | } | |
2ad51539 AS |
799 | } |
800 | ||
79f39ecf MW |
801 | METHOD(child_sa_t, get_mark, mark_t, |
802 | private_child_sa_t *this, bool inbound) | |
803 | { | |
a6014d99 TB |
804 | return inbound ? this->mark_in : this->mark_out; |
805 | } | |
806 | ||
807 | METHOD(child_sa_t, get_if_id, uint32_t, | |
808 | private_child_sa_t *this, bool inbound) | |
809 | { | |
810 | return inbound ? this->if_id_in : this->if_id_out; | |
79f39ecf MW |
811 | } |
812 | ||
139d6558 TB |
813 | METHOD(child_sa_t, get_label, sec_label_t*, |
814 | private_child_sa_t *this) | |
815 | { | |
816 | return this->label ?: this->config->get_label(this->config); | |
817 | } | |
818 | ||
9d941742 TB |
819 | METHOD(child_sa_t, get_lifetime, time_t, |
820 | private_child_sa_t *this, bool hard) | |
6e10aead | 821 | { |
80853d84 | 822 | return hard ? this->expire_time : this->rekey_time; |
a3ce4bc2 MW |
823 | } |
824 | ||
763e0353 MW |
825 | METHOD(child_sa_t, get_installtime, time_t, |
826 | private_child_sa_t *this) | |
827 | { | |
828 | return this->install_time; | |
829 | } | |
830 | ||
b12c53ce | 831 | METHOD(child_sa_t, alloc_spi, uint32_t, |
9d941742 | 832 | private_child_sa_t *this, protocol_id_t protocol) |
1396815a | 833 | { |
8394ea2a TB |
834 | if (charon->kernel->get_spi(charon->kernel, this->other_addr, this->my_addr, |
835 | proto_ike2ip(protocol), &this->my_spi) == SUCCESS) | |
64e8ca28 | 836 | { |
21b096f3 MW |
837 | /* if we allocate a SPI, but then are unable to establish the SA, we |
838 | * need to know the protocol family to delete the partial SA */ | |
839 | this->protocol = protocol; | |
64e8ca28 | 840 | return this->my_spi; |
1396815a | 841 | } |
3aaf7908 | 842 | return 0; |
1396815a MW |
843 | } |
844 | ||
b12c53ce | 845 | METHOD(child_sa_t, alloc_cpi, uint16_t, |
9d941742 | 846 | private_child_sa_t *this) |
3ebebc5e | 847 | { |
8394ea2a TB |
848 | if (charon->kernel->get_cpi(charon->kernel, this->other_addr, this->my_addr, |
849 | &this->my_cpi) == SUCCESS) | |
30b5b412 | 850 | { |
3aaf7908 | 851 | return this->my_cpi; |
30b5b412 | 852 | } |
3aaf7908 | 853 | return 0; |
3ebebc5e MW |
854 | } |
855 | ||
13771206 TB |
856 | /** |
857 | * Allocate a reqid for the given local and remote traffic selector lists. | |
858 | * On success, release the previously allocated reqid. | |
859 | */ | |
860 | static status_t alloc_reqid_lists(private_child_sa_t *this, | |
861 | linked_list_t *my_ts, linked_list_t *other_ts, | |
862 | uint32_t *reqid) | |
863 | { | |
864 | uint32_t existing_reqid = *reqid; | |
865 | status_t status; | |
866 | ||
867 | status = charon->kernel->alloc_reqid( | |
868 | charon->kernel, my_ts, other_ts, | |
869 | this->mark_in, this->mark_out, this->if_id_in, | |
870 | this->if_id_out, label_for(this, LABEL_USE_REQID), | |
871 | reqid); | |
872 | ||
873 | if (status == SUCCESS && existing_reqid) | |
874 | { | |
875 | if (charon->kernel->release_reqid(charon->kernel, | |
876 | existing_reqid) != SUCCESS) | |
877 | { | |
878 | DBG1(DBG_CHD, "releasing previous reqid %u failed", existing_reqid); | |
879 | } | |
880 | } | |
881 | return status; | |
882 | } | |
883 | ||
884 | /** | |
885 | * Allocate a reqid for the given local and remote traffic selectors. | |
886 | */ | |
887 | static status_t alloc_reqid(private_child_sa_t *this, array_t *my_ts, | |
888 | array_t *other_ts, uint32_t *reqid) | |
889 | { | |
890 | linked_list_t *my_ts_list, *other_ts_list; | |
891 | status_t status; | |
892 | ||
893 | my_ts_list = linked_list_create_from_enumerator(array_create_enumerator(my_ts)); | |
894 | other_ts_list = linked_list_create_from_enumerator(array_create_enumerator(other_ts)); | |
895 | status = alloc_reqid_lists(this, my_ts_list, other_ts_list, reqid); | |
896 | my_ts_list->destroy(my_ts_list); | |
897 | other_ts_list->destroy(other_ts_list); | |
898 | return status; | |
899 | } | |
900 | ||
8a3a389e TB |
901 | /** |
902 | * Install the given SA in the kernel | |
903 | */ | |
904 | static status_t install_internal(private_child_sa_t *this, chunk_t encr, | |
905 | chunk_t integ, uint32_t spi, uint16_t cpi, bool initiator, bool inbound, | |
906 | bool tfcv3) | |
3ebebc5e | 907 | { |
b12c53ce AS |
908 | uint16_t enc_alg = ENCR_UNDEFINED, int_alg = AUTH_UNDEFINED, size; |
909 | uint16_t esn = NO_EXT_SEQ_NUMBERS; | |
4989aba8 | 910 | linked_list_t *my_ts, *other_ts, *src_ts, *dst_ts; |
cb123493 | 911 | time_t now; |
89da06ac TB |
912 | kernel_ipsec_sa_id_t id; |
913 | kernel_ipsec_add_sa_t sa; | |
cb123493 | 914 | lifetime_cfg_t *lifetime; |
b12c53ce | 915 | uint32_t tfc = 0; |
e517b4b1 | 916 | host_t *src, *dst; |
30b5b412 | 917 | status_t status; |
acad5e9f | 918 | bool update = FALSE; |
7daf5226 | 919 | |
4989aba8 TB |
920 | /* BEET requires the bound address from the traffic selectors */ |
921 | my_ts = linked_list_create_from_enumerator( | |
922 | array_create_enumerator(this->my_ts)); | |
923 | other_ts = linked_list_create_from_enumerator( | |
924 | array_create_enumerator(this->other_ts)); | |
925 | ||
80853d84 MW |
926 | /* now we have to decide which spi to use. Use self allocated, if "in", |
927 | * or the one in the proposal, if not "in" (others). Additionally, | |
3efbf983 | 928 | * source and dest host switch depending on the role */ |
3aaf7908 | 929 | if (inbound) |
aeda79ff | 930 | { |
80853d84 MW |
931 | dst = this->my_addr; |
932 | src = this->other_addr; | |
acad5e9f MW |
933 | if (this->my_spi == spi) |
934 | { /* alloc_spi has been called, do an SA update */ | |
935 | update = TRUE; | |
936 | } | |
3aaf7908 MW |
937 | this->my_spi = spi; |
938 | this->my_cpi = cpi; | |
4989aba8 TB |
939 | dst_ts = my_ts; |
940 | src_ts = other_ts; | |
9118fd39 | 941 | this->inbound_installed = TRUE; |
aeda79ff | 942 | } |
8d77edde MW |
943 | else |
944 | { | |
80853d84 MW |
945 | src = this->my_addr; |
946 | dst = this->other_addr; | |
3aaf7908 MW |
947 | this->other_spi = spi; |
948 | this->other_cpi = cpi; | |
4989aba8 TB |
949 | src_ts = my_ts; |
950 | dst_ts = other_ts; | |
37788b1d | 951 | |
55df72e6 MW |
952 | if (tfcv3) |
953 | { | |
954 | tfc = this->config->get_tfc(this->config); | |
955 | } | |
2c116ef5 | 956 | this->outbound_state |= CHILD_OUTBOUND_SA; |
8d77edde | 957 | } |
7daf5226 | 958 | |
3aaf7908 | 959 | DBG2(DBG_CHD, "adding %s %N SA", inbound ? "inbound" : "outbound", |
60356f33 | 960 | protocol_id_names, this->protocol); |
7daf5226 | 961 | |
5c131a01 | 962 | /* send SA down to the kernel */ |
b83806d8 | 963 | DBG2(DBG_CHD, " SPI 0x%.8x, src %H dst %H", ntohl(spi), src, dst); |
7daf5226 | 964 | |
3aaf7908 MW |
965 | this->proposal->get_algorithm(this->proposal, ENCRYPTION_ALGORITHM, |
966 | &enc_alg, &size); | |
967 | this->proposal->get_algorithm(this->proposal, INTEGRITY_ALGORITHM, | |
968 | &int_alg, &size); | |
bd01b9d8 MW |
969 | this->proposal->get_algorithm(this->proposal, EXTENDED_SEQUENCE_NUMBERS, |
970 | &esn, NULL); | |
7daf5226 | 971 | |
7637633b TB |
972 | if (int_alg == AUTH_HMAC_SHA2_256_128 && |
973 | this->config->has_option(this->config, OPT_SHA256_96)) | |
974 | { | |
975 | DBG2(DBG_CHD, " using %N with 96-bit truncation", | |
976 | integrity_algorithm_names, int_alg); | |
977 | int_alg = AUTH_HMAC_SHA2_256_96; | |
978 | } | |
979 | ||
3665adef | 980 | if (!this->reqid_allocated && !this->static_reqid) |
0da97f50 | 981 | { |
13771206 | 982 | status = alloc_reqid_lists(this, my_ts, other_ts, &this->reqid); |
0da97f50 MW |
983 | if (status != SUCCESS) |
984 | { | |
4989aba8 TB |
985 | my_ts->destroy(my_ts); |
986 | other_ts->destroy(other_ts); | |
0da97f50 MW |
987 | return status; |
988 | } | |
989 | this->reqid_allocated = TRUE; | |
990 | } | |
991 | ||
b1df6312 | 992 | lifetime = this->config->get_lifetime(this->config, TRUE); |
7daf5226 | 993 | |
6180a558 | 994 | now = time_monotonic(NULL); |
e75f4237 | 995 | if (lifetime->time.rekey) |
37974979 | 996 | { |
106b938b MW |
997 | if (this->rekey_time) |
998 | { | |
999 | this->rekey_time = min(this->rekey_time, now + lifetime->time.rekey); | |
1000 | } | |
1001 | else | |
1002 | { | |
1003 | this->rekey_time = now + lifetime->time.rekey; | |
1004 | } | |
37974979 | 1005 | } |
e75f4237 | 1006 | if (lifetime->time.life) |
37974979 | 1007 | { |
e75f4237 | 1008 | this->expire_time = now + lifetime->time.life; |
cb123493 | 1009 | } |
7daf5226 | 1010 | |
e75f4237 | 1011 | if (!lifetime->time.jitter && !inbound) |
cb123493 | 1012 | { /* avoid triggering multiple rekey events */ |
e75f4237 | 1013 | lifetime->time.rekey = 0; |
37974979 | 1014 | } |
7daf5226 | 1015 | |
89da06ac TB |
1016 | id = (kernel_ipsec_sa_id_t){ |
1017 | .src = src, | |
1018 | .dst = dst, | |
1019 | .spi = spi, | |
1020 | .proto = proto_ike2ip(this->protocol), | |
ea43f8ff | 1021 | .mark = inbound ? mark_in_sa(this) : this->mark_out, |
a6014d99 | 1022 | .if_id = inbound ? this->if_id_in : this->if_id_out, |
89da06ac TB |
1023 | }; |
1024 | sa = (kernel_ipsec_add_sa_t){ | |
1025 | .reqid = this->reqid, | |
1026 | .mode = this->mode, | |
1027 | .src_ts = src_ts, | |
1028 | .dst_ts = dst_ts, | |
c26e4330 | 1029 | .interface = inbound ? NULL : this->config->get_interface(this->config), |
89da06ac TB |
1030 | .lifetime = lifetime, |
1031 | .enc_alg = enc_alg, | |
1032 | .enc_key = encr, | |
1033 | .int_alg = int_alg, | |
1034 | .int_key = integ, | |
1035 | .replay_window = this->config->get_replay_window(this->config), | |
1036 | .tfc = tfc, | |
1037 | .ipcomp = this->ipcomp, | |
1038 | .cpi = cpi, | |
1039 | .encap = this->encap, | |
8ced1570 | 1040 | .hw_offload = this->config->get_hw_offload(this->config), |
f59450fd | 1041 | .mark = this->config->get_set_mark(this->config, inbound), |
89da06ac | 1042 | .esn = esn, |
dc8b015d TB |
1043 | .copy_df = !this->config->has_option(this->config, OPT_NO_COPY_DF), |
1044 | .copy_ecn = !this->config->has_option(this->config, OPT_NO_COPY_ECN), | |
c993eaf9 | 1045 | .copy_dscp = this->config->get_copy_dscp(this->config), |
139d6558 | 1046 | .label = label_for(this, LABEL_USE_SA), |
89da06ac TB |
1047 | .initiator = initiator, |
1048 | .inbound = inbound, | |
1049 | .update = update, | |
1050 | }; | |
1051 | ||
902dc29f MW |
1052 | if (sa.mark.value == MARK_SAME) |
1053 | { | |
1054 | sa.mark.value = inbound ? this->mark_in.value : this->mark_out.value; | |
1055 | } | |
1056 | ||
89da06ac | 1057 | status = charon->kernel->add_sa(charon->kernel, &id, &sa); |
7daf5226 | 1058 | |
4989aba8 TB |
1059 | my_ts->destroy(my_ts); |
1060 | other_ts->destroy(other_ts); | |
cb123493 | 1061 | free(lifetime); |
7daf5226 | 1062 | |
8d77edde | 1063 | return status; |
30b5b412 MW |
1064 | } |
1065 | ||
8a3a389e TB |
1066 | METHOD(child_sa_t, install, status_t, |
1067 | private_child_sa_t *this, chunk_t encr, chunk_t integ, uint32_t spi, | |
1068 | uint16_t cpi, bool initiator, bool inbound, bool tfcv3) | |
1069 | { | |
1070 | return install_internal(this, encr, integ, spi, cpi, initiator, inbound, | |
1071 | tfcv3); | |
1072 | } | |
1073 | ||
7452adfa MW |
1074 | /** |
1075 | * Check kernel interface if policy updates are required | |
1076 | */ | |
1077 | static bool require_policy_update() | |
1078 | { | |
1079 | kernel_feature_t f; | |
1080 | ||
8394ea2a | 1081 | f = charon->kernel->get_features(charon->kernel); |
7452adfa MW |
1082 | return !(f & KERNEL_NO_POLICY_UPDATES); |
1083 | } | |
1084 | ||
a6e0f14f TB |
1085 | /** |
1086 | * Prepare SA config to install/delete policies | |
1087 | */ | |
1088 | static void prepare_sa_cfg(private_child_sa_t *this, ipsec_sa_cfg_t *my_sa, | |
1089 | ipsec_sa_cfg_t *other_sa) | |
1090 | { | |
1091 | enumerator_t *enumerator; | |
1092 | ||
1093 | *my_sa = (ipsec_sa_cfg_t){ | |
1094 | .mode = this->mode, | |
1095 | .reqid = this->reqid, | |
1096 | .ipcomp = { | |
1097 | .transform = this->ipcomp, | |
1098 | }, | |
1099 | }; | |
1100 | *other_sa = *my_sa; | |
1101 | ||
1102 | my_sa->ipcomp.cpi = this->my_cpi; | |
1103 | other_sa->ipcomp.cpi = this->other_cpi; | |
1104 | ||
1105 | if (this->protocol == PROTO_ESP) | |
1106 | { | |
1107 | my_sa->esp.use = TRUE; | |
1108 | my_sa->esp.spi = this->my_spi; | |
1109 | other_sa->esp.use = TRUE; | |
1110 | other_sa->esp.spi = this->other_spi; | |
1111 | } | |
1112 | else | |
1113 | { | |
1114 | my_sa->ah.use = TRUE; | |
1115 | my_sa->ah.spi = this->my_spi; | |
1116 | other_sa->ah.use = TRUE; | |
1117 | other_sa->ah.spi = this->other_spi; | |
1118 | } | |
1119 | ||
1120 | enumerator = create_policy_enumerator(this); | |
1121 | while (enumerator->enumerate(enumerator, NULL, NULL)) | |
1122 | { | |
1123 | my_sa->policy_count++; | |
1124 | other_sa->policy_count++; | |
1125 | } | |
1126 | enumerator->destroy(enumerator); | |
1127 | } | |
1128 | ||
f1c1965d | 1129 | /** |
db82c0f5 | 1130 | * Install inbound policies: in, fwd |
f1c1965d | 1131 | */ |
29ef4cf5 | 1132 | static status_t install_policies_inbound(private_child_sa_t *this, |
f1c1965d TB |
1133 | host_t *my_addr, host_t *other_addr, traffic_selector_t *my_ts, |
1134 | traffic_selector_t *other_ts, ipsec_sa_cfg_t *my_sa, | |
7f57c4f9 AS |
1135 | ipsec_sa_cfg_t *other_sa, policy_type_t type, |
1136 | policy_priority_t priority, uint32_t manual_prio) | |
f1c1965d | 1137 | { |
29ef4cf5 | 1138 | kernel_ipsec_policy_id_t in_id = { |
89da06ac TB |
1139 | .dir = POLICY_IN, |
1140 | .src_ts = other_ts, | |
1141 | .dst_ts = my_ts, | |
1142 | .mark = this->mark_in, | |
a6014d99 | 1143 | .if_id = this->if_id_in, |
139d6558 | 1144 | .label = label_for(this, LABEL_USE_POLICY), |
89da06ac | 1145 | }; |
29ef4cf5 | 1146 | kernel_ipsec_manage_policy_t in_policy = { |
89da06ac TB |
1147 | .type = type, |
1148 | .prio = priority, | |
7f57c4f9 | 1149 | .manual_prio = manual_prio, |
46cfebe4 | 1150 | .hw_offload = this->config->get_hw_offload(this->config), |
89da06ac TB |
1151 | .src = other_addr, |
1152 | .dst = my_addr, | |
1153 | .sa = my_sa, | |
1154 | }; | |
f1c1965d | 1155 | status_t status = SUCCESS; |
89da06ac | 1156 | |
89da06ac | 1157 | status |= charon->kernel->add_policy(charon->kernel, &in_id, &in_policy); |
f1c1965d TB |
1158 | if (this->mode != MODE_TRANSPORT) |
1159 | { | |
89da06ac TB |
1160 | in_id.dir = POLICY_FWD; |
1161 | status |= charon->kernel->add_policy(charon->kernel, &in_id, &in_policy); | |
29ef4cf5 TB |
1162 | } |
1163 | return status; | |
1164 | } | |
9c126352 | 1165 | |
29ef4cf5 | 1166 | /** |
db82c0f5 | 1167 | * Install outbound policies: out, [fwd] |
29ef4cf5 TB |
1168 | */ |
1169 | static status_t install_policies_outbound(private_child_sa_t *this, | |
1170 | host_t *my_addr, host_t *other_addr, traffic_selector_t *my_ts, | |
1171 | traffic_selector_t *other_ts, ipsec_sa_cfg_t *my_sa, | |
1172 | ipsec_sa_cfg_t *other_sa, policy_type_t type, | |
1173 | policy_priority_t priority, uint32_t manual_prio) | |
1174 | { | |
1175 | kernel_ipsec_policy_id_t out_id = { | |
1176 | .dir = POLICY_OUT, | |
1177 | .src_ts = my_ts, | |
1178 | .dst_ts = other_ts, | |
1179 | .mark = this->mark_out, | |
a6014d99 | 1180 | .if_id = this->if_id_out, |
29ef4cf5 | 1181 | .interface = this->config->get_interface(this->config), |
139d6558 | 1182 | .label = label_for(this, LABEL_USE_POLICY), |
29ef4cf5 TB |
1183 | }; |
1184 | kernel_ipsec_manage_policy_t out_policy = { | |
1185 | .type = type, | |
1186 | .prio = priority, | |
1187 | .manual_prio = manual_prio, | |
46cfebe4 | 1188 | .hw_offload = this->config->get_hw_offload(this->config), |
29ef4cf5 TB |
1189 | .src = my_addr, |
1190 | .dst = other_addr, | |
1191 | .sa = other_sa, | |
1192 | }; | |
8f4cfe96 | 1193 | uint32_t reqid = other_sa->reqid; |
29ef4cf5 TB |
1194 | status_t status = SUCCESS; |
1195 | ||
1196 | status |= charon->kernel->add_policy(charon->kernel, &out_id, &out_policy); | |
1197 | ||
1198 | if (this->mode != MODE_TRANSPORT && this->policies_fwd_out) | |
1199 | { | |
9c126352 TB |
1200 | /* install an "outbound" FWD policy in case there is a drop policy |
1201 | * matching outbound forwarded traffic, to allow another tunnel to use | |
1202 | * the reversed subnets and do the same we don't set a reqid (this also | |
1203 | * allows the kernel backend to distinguish between the two types of | |
979f4651 TB |
1204 | * FWD policies). To avoid problems with symmetrically overlapping |
1205 | * policies of two SAs we install them with reduced priority. As they | |
1206 | * basically act as bypass policies for drop policies we use a higher | |
1207 | * priority than is used for them. */ | |
29ef4cf5 TB |
1208 | out_id.dir = POLICY_FWD; |
1209 | other_sa->reqid = 0; | |
1210 | if (priority == POLICY_PRIORITY_DEFAULT) | |
979f4651 | 1211 | { |
29ef4cf5 | 1212 | out_policy.prio = POLICY_PRIORITY_ROUTED; |
979f4651 | 1213 | } |
29ef4cf5 TB |
1214 | status |= charon->kernel->add_policy(charon->kernel, &out_id, |
1215 | &out_policy); | |
1216 | /* reset the reqid for any other further policies */ | |
8f4cfe96 | 1217 | other_sa->reqid = reqid; |
f1c1965d TB |
1218 | } |
1219 | return status; | |
1220 | } | |
1221 | ||
1222 | /** | |
29ef4cf5 | 1223 | * Install all policies |
f1c1965d | 1224 | */ |
29ef4cf5 TB |
1225 | static status_t install_policies_internal(private_child_sa_t *this, |
1226 | host_t *my_addr, host_t *other_addr, traffic_selector_t *my_ts, | |
1227 | traffic_selector_t *other_ts, ipsec_sa_cfg_t *my_sa, | |
1228 | ipsec_sa_cfg_t *other_sa, policy_type_t type, | |
529ffc2f | 1229 | policy_priority_t priority, uint32_t manual_prio, bool outbound) |
29ef4cf5 TB |
1230 | { |
1231 | status_t status = SUCCESS; | |
1232 | ||
1233 | status |= install_policies_inbound(this, my_addr, other_addr, my_ts, | |
529ffc2f TB |
1234 | other_ts, my_sa, other_sa, type, priority, manual_prio); |
1235 | if (outbound) | |
1236 | { | |
1237 | status |= install_policies_outbound(this, my_addr, other_addr, my_ts, | |
1238 | other_ts, my_sa, other_sa, type, priority, manual_prio); | |
1239 | } | |
29ef4cf5 TB |
1240 | return status; |
1241 | } | |
1242 | ||
1243 | /** | |
1244 | * Delete inbound policies: in, fwd | |
1245 | */ | |
1246 | static void del_policies_inbound(private_child_sa_t *this, | |
a6e0f14f TB |
1247 | host_t *my_addr, host_t *other_addr, traffic_selector_t *my_ts, |
1248 | traffic_selector_t *other_ts, ipsec_sa_cfg_t *my_sa, | |
7f57c4f9 AS |
1249 | ipsec_sa_cfg_t *other_sa, policy_type_t type, |
1250 | policy_priority_t priority, uint32_t manual_prio) | |
f1c1965d | 1251 | { |
29ef4cf5 | 1252 | kernel_ipsec_policy_id_t in_id = { |
89da06ac TB |
1253 | .dir = POLICY_IN, |
1254 | .src_ts = other_ts, | |
1255 | .dst_ts = my_ts, | |
1256 | .mark = this->mark_in, | |
a6014d99 | 1257 | .if_id = this->if_id_in, |
139d6558 | 1258 | .label = label_for(this, LABEL_USE_POLICY), |
89da06ac | 1259 | }; |
29ef4cf5 | 1260 | kernel_ipsec_manage_policy_t in_policy = { |
89da06ac TB |
1261 | .type = type, |
1262 | .prio = priority, | |
7f57c4f9 | 1263 | .manual_prio = manual_prio, |
46cfebe4 | 1264 | .hw_offload = this->config->get_hw_offload(this->config), |
89da06ac TB |
1265 | .src = other_addr, |
1266 | .dst = my_addr, | |
1267 | .sa = my_sa, | |
1268 | }; | |
a6e0f14f | 1269 | |
89da06ac | 1270 | charon->kernel->del_policy(charon->kernel, &in_id, &in_policy); |
29ef4cf5 | 1271 | |
f1c1965d TB |
1272 | if (this->mode != MODE_TRANSPORT) |
1273 | { | |
89da06ac TB |
1274 | in_id.dir = POLICY_FWD; |
1275 | charon->kernel->del_policy(charon->kernel, &in_id, &in_policy); | |
29ef4cf5 TB |
1276 | } |
1277 | } | |
1278 | ||
1279 | /** | |
1280 | * Delete outbound policies: out, [fwd] | |
1281 | */ | |
1282 | static void del_policies_outbound(private_child_sa_t *this, | |
1283 | host_t *my_addr, host_t *other_addr, traffic_selector_t *my_ts, | |
1284 | traffic_selector_t *other_ts, ipsec_sa_cfg_t *my_sa, | |
1285 | ipsec_sa_cfg_t *other_sa, policy_type_t type, | |
1286 | policy_priority_t priority, uint32_t manual_prio) | |
1287 | { | |
1288 | kernel_ipsec_policy_id_t out_id = { | |
1289 | .dir = POLICY_OUT, | |
1290 | .src_ts = my_ts, | |
1291 | .dst_ts = other_ts, | |
1292 | .mark = this->mark_out, | |
a6014d99 | 1293 | .if_id = this->if_id_out, |
29ef4cf5 | 1294 | .interface = this->config->get_interface(this->config), |
139d6558 | 1295 | .label = label_for(this, LABEL_USE_POLICY), |
29ef4cf5 TB |
1296 | }; |
1297 | kernel_ipsec_manage_policy_t out_policy = { | |
1298 | .type = type, | |
1299 | .prio = priority, | |
1300 | .manual_prio = manual_prio, | |
46cfebe4 | 1301 | .hw_offload = this->config->get_hw_offload(this->config), |
29ef4cf5 TB |
1302 | .src = my_addr, |
1303 | .dst = other_addr, | |
1304 | .sa = other_sa, | |
1305 | }; | |
8f4cfe96 | 1306 | uint32_t reqid = other_sa->reqid; |
29ef4cf5 TB |
1307 | |
1308 | charon->kernel->del_policy(charon->kernel, &out_id, &out_policy); | |
9c126352 | 1309 | |
29ef4cf5 TB |
1310 | if (this->mode != MODE_TRANSPORT && this->policies_fwd_out) |
1311 | { | |
1312 | out_id.dir = POLICY_FWD; | |
1313 | other_sa->reqid = 0; | |
1314 | if (priority == POLICY_PRIORITY_DEFAULT) | |
979f4651 | 1315 | { |
29ef4cf5 | 1316 | out_policy.prio = POLICY_PRIORITY_ROUTED; |
979f4651 | 1317 | } |
29ef4cf5 | 1318 | charon->kernel->del_policy(charon->kernel, &out_id, &out_policy); |
8f4cfe96 | 1319 | other_sa->reqid = reqid; |
f1c1965d TB |
1320 | } |
1321 | } | |
1322 | ||
29ef4cf5 TB |
1323 | /** |
1324 | * Delete in- and outbound policies | |
1325 | */ | |
1326 | static void del_policies_internal(private_child_sa_t *this, | |
1327 | host_t *my_addr, host_t *other_addr, traffic_selector_t *my_ts, | |
1328 | traffic_selector_t *other_ts, ipsec_sa_cfg_t *my_sa, | |
1329 | ipsec_sa_cfg_t *other_sa, policy_type_t type, | |
529ffc2f | 1330 | policy_priority_t priority, uint32_t manual_prio, bool outbound) |
29ef4cf5 | 1331 | { |
529ffc2f TB |
1332 | if (outbound) |
1333 | { | |
1334 | del_policies_outbound(this, my_addr, other_addr, my_ts, other_ts, my_sa, | |
1335 | other_sa, type, priority, manual_prio); | |
1336 | } | |
29ef4cf5 | 1337 | del_policies_inbound(this, my_addr, other_addr, my_ts, other_ts, my_sa, |
529ffc2f | 1338 | other_sa, type, priority, manual_prio); |
29ef4cf5 TB |
1339 | } |
1340 | ||
4989aba8 | 1341 | METHOD(child_sa_t, set_policies, void, |
9d941742 TB |
1342 | private_child_sa_t *this, linked_list_t *my_ts_list, |
1343 | linked_list_t *other_ts_list) | |
a527a426 | 1344 | { |
1df106bf | 1345 | enumerator_t *enumerator; |
5d187bd2 | 1346 | traffic_selector_t *my_ts, *other_ts; |
7daf5226 | 1347 | |
4989aba8 | 1348 | if (array_count(this->my_ts)) |
0da97f50 | 1349 | { |
4989aba8 TB |
1350 | array_destroy_offset(this->my_ts, |
1351 | offsetof(traffic_selector_t, destroy)); | |
1352 | this->my_ts = array_create(0, 0); | |
0da97f50 | 1353 | } |
1df106bf MW |
1354 | enumerator = my_ts_list->create_enumerator(my_ts_list); |
1355 | while (enumerator->enumerate(enumerator, &my_ts)) | |
a527a426 | 1356 | { |
2745ae26 | 1357 | array_insert(this->my_ts, ARRAY_TAIL, my_ts->clone(my_ts)); |
1df106bf MW |
1358 | } |
1359 | enumerator->destroy(enumerator); | |
5499473c MW |
1360 | array_sort(this->my_ts, (void*)traffic_selector_cmp, NULL); |
1361 | ||
4989aba8 TB |
1362 | if (array_count(this->other_ts)) |
1363 | { | |
1364 | array_destroy_offset(this->other_ts, | |
1365 | offsetof(traffic_selector_t, destroy)); | |
1366 | this->other_ts = array_create(0, 0); | |
1367 | } | |
1df106bf MW |
1368 | enumerator = other_ts_list->create_enumerator(other_ts_list); |
1369 | while (enumerator->enumerate(enumerator, &other_ts)) | |
1370 | { | |
2745ae26 | 1371 | array_insert(this->other_ts, ARRAY_TAIL, other_ts->clone(other_ts)); |
1df106bf MW |
1372 | } |
1373 | enumerator->destroy(enumerator); | |
5499473c | 1374 | array_sort(this->other_ts, (void*)traffic_selector_cmp, NULL); |
4989aba8 TB |
1375 | } |
1376 | ||
1377 | METHOD(child_sa_t, install_policies, status_t, | |
1378 | private_child_sa_t *this) | |
1379 | { | |
1380 | enumerator_t *enumerator; | |
4989aba8 TB |
1381 | traffic_selector_t *my_ts, *other_ts; |
1382 | status_t status = SUCCESS; | |
2c116ef5 | 1383 | bool install_outbound = FALSE; |
4989aba8 TB |
1384 | |
1385 | if (!this->reqid_allocated && !this->static_reqid) | |
1386 | { | |
8f4cfe96 | 1387 | status = alloc_reqid(this, this->my_ts, this->other_ts, &this->reqid); |
4989aba8 TB |
1388 | if (status != SUCCESS) |
1389 | { | |
1390 | return status; | |
1391 | } | |
1392 | this->reqid_allocated = TRUE; | |
1393 | } | |
7daf5226 | 1394 | |
2c116ef5 TB |
1395 | if (!(this->outbound_state & CHILD_OUTBOUND_REGISTERED)) |
1396 | { | |
1397 | install_outbound = TRUE; | |
1398 | this->outbound_state |= CHILD_OUTBOUND_POLICIES; | |
1399 | } | |
1400 | ||
749ac175 | 1401 | if (!this->config->has_option(this->config, OPT_NO_POLICIES)) |
1df106bf | 1402 | { |
fbedc6a4 | 1403 | policy_priority_t priority; |
a6e0f14f | 1404 | ipsec_sa_cfg_t my_sa, other_sa; |
7f57c4f9 | 1405 | uint32_t manual_prio; |
a6e0f14f TB |
1406 | |
1407 | prepare_sa_cfg(this, &my_sa, &other_sa); | |
7f57c4f9 | 1408 | manual_prio = this->config->get_manual_prio(this->config); |
71b6d2ff | 1409 | |
c8f7a114 TB |
1410 | /* if we're not in state CHILD_INSTALLING (i.e. if there is no SAD |
1411 | * entry) we install a trap policy */ | |
1412 | this->trap = this->state == CHILD_CREATED; | |
1413 | priority = this->trap ? POLICY_PRIORITY_ROUTED | |
1414 | : POLICY_PRIORITY_DEFAULT; | |
fbedc6a4 | 1415 | |
d487b4b7 AS |
1416 | /* enumerate pairs of traffic selectors */ |
1417 | enumerator = create_policy_enumerator(this); | |
1418 | while (enumerator->enumerate(enumerator, &my_ts, &other_ts)) | |
1419 | { | |
529ffc2f | 1420 | status |= install_policies_internal(this, this->my_addr, |
f1c1965d | 1421 | this->other_addr, my_ts, other_ts, |
529ffc2f TB |
1422 | &my_sa, &other_sa, POLICY_IPSEC, priority, |
1423 | manual_prio, install_outbound); | |
d487b4b7 AS |
1424 | if (status != SUCCESS) |
1425 | { | |
1426 | break; | |
1427 | } | |
5d187bd2 | 1428 | } |
d487b4b7 | 1429 | enumerator->destroy(enumerator); |
5d187bd2 | 1430 | } |
7daf5226 | 1431 | |
c8f7a114 TB |
1432 | if (status == SUCCESS && this->trap) |
1433 | { | |
3aaf7908 | 1434 | set_state(this, CHILD_ROUTED); |
45f76a7d | 1435 | } |
1df106bf | 1436 | return status; |
30b5b412 MW |
1437 | } |
1438 | ||
139d6558 TB |
1439 | /** |
1440 | * Check if we can install the outbound SA immediately. | |
1441 | * | |
1442 | * If the kernel supports installing SPIs with policies, we can do so as it | |
1443 | * will only be used once we update the policies. | |
1444 | * | |
1445 | * However, if we use labels with SELinux, we can't as we don't set SPIs | |
1446 | * on the policy in order to match SAs with other labels that match the generic | |
1447 | * label that's used on the policies. | |
1448 | */ | |
1449 | static bool install_outbound_immediately(private_child_sa_t *this) | |
1450 | { | |
1451 | if (charon->kernel->get_features(charon->kernel) & KERNEL_POLICY_SPI) | |
1452 | { | |
1453 | if (this->config->get_label_mode(this->config) == SEC_LABEL_MODE_SELINUX) | |
1454 | { | |
1455 | return !this->label; | |
1456 | } | |
1457 | return TRUE; | |
1458 | } | |
1459 | return FALSE; | |
1460 | } | |
1461 | ||
a146b4c9 | 1462 | METHOD(child_sa_t, register_outbound, status_t, |
8a3a389e | 1463 | private_child_sa_t *this, chunk_t encr, chunk_t integ, uint32_t spi, |
639af09b | 1464 | uint16_t cpi, bool initiator, bool tfcv3) |
8a3a389e | 1465 | { |
a146b4c9 TB |
1466 | status_t status; |
1467 | ||
139d6558 | 1468 | if (install_outbound_immediately(this)) |
a146b4c9 | 1469 | { |
639af09b | 1470 | status = install_internal(this, encr, integ, spi, cpi, initiator, FALSE, |
a146b4c9 TB |
1471 | tfcv3); |
1472 | } | |
1473 | else | |
1474 | { | |
1475 | DBG2(DBG_CHD, "registering outbound %N SA", protocol_id_names, | |
1476 | this->protocol); | |
1477 | DBG2(DBG_CHD, " SPI 0x%.8x, src %H dst %H", ntohl(spi), this->my_addr, | |
1478 | this->other_addr); | |
1479 | ||
1480 | this->other_spi = spi; | |
1481 | this->other_cpi = cpi; | |
1482 | this->encr_r = chunk_clone(encr); | |
1483 | this->integ_r = chunk_clone(integ); | |
639af09b | 1484 | this->initiator = initiator; |
a146b4c9 TB |
1485 | this->tfcv3 = tfcv3; |
1486 | status = SUCCESS; | |
1487 | } | |
2c116ef5 | 1488 | this->outbound_state |= CHILD_OUTBOUND_REGISTERED; |
a146b4c9 | 1489 | return status; |
8a3a389e TB |
1490 | } |
1491 | ||
1492 | METHOD(child_sa_t, install_outbound, status_t, | |
1493 | private_child_sa_t *this) | |
1494 | { | |
1495 | enumerator_t *enumerator; | |
1496 | traffic_selector_t *my_ts, *other_ts; | |
2c116ef5 | 1497 | status_t status = SUCCESS; |
8a3a389e | 1498 | |
a146b4c9 TB |
1499 | if (!(this->outbound_state & CHILD_OUTBOUND_SA)) |
1500 | { | |
1501 | status = install_internal(this, this->encr_r, this->integ_r, | |
639af09b TB |
1502 | this->other_spi, this->other_cpi, |
1503 | this->initiator, FALSE, this->tfcv3); | |
a146b4c9 TB |
1504 | chunk_clear(&this->encr_r); |
1505 | chunk_clear(&this->integ_r); | |
1506 | } | |
2c116ef5 | 1507 | this->outbound_state &= ~CHILD_OUTBOUND_REGISTERED; |
8a3a389e TB |
1508 | if (status != SUCCESS) |
1509 | { | |
1510 | return status; | |
1511 | } | |
a146b4c9 TB |
1512 | if (!this->config->has_option(this->config, OPT_NO_POLICIES) && |
1513 | !(this->outbound_state & CHILD_OUTBOUND_POLICIES)) | |
8a3a389e TB |
1514 | { |
1515 | ipsec_sa_cfg_t my_sa, other_sa; | |
1516 | uint32_t manual_prio; | |
1517 | ||
1518 | prepare_sa_cfg(this, &my_sa, &other_sa); | |
1519 | manual_prio = this->config->get_manual_prio(this->config); | |
1520 | ||
1521 | enumerator = create_policy_enumerator(this); | |
1522 | while (enumerator->enumerate(enumerator, &my_ts, &other_ts)) | |
1523 | { | |
8a3a389e TB |
1524 | status |= install_policies_outbound(this, this->my_addr, |
1525 | this->other_addr, my_ts, other_ts, | |
1526 | &my_sa, &other_sa, POLICY_IPSEC, | |
1527 | POLICY_PRIORITY_DEFAULT, manual_prio); | |
1528 | if (status != SUCCESS) | |
1529 | { | |
1530 | break; | |
1531 | } | |
1532 | } | |
1533 | enumerator->destroy(enumerator); | |
1534 | } | |
a146b4c9 | 1535 | this->outbound_state |= CHILD_OUTBOUND_POLICIES; |
8a3a389e TB |
1536 | return status; |
1537 | } | |
1538 | ||
c5fed4cd TB |
1539 | METHOD(child_sa_t, remove_outbound, void, |
1540 | private_child_sa_t *this) | |
1541 | { | |
1542 | enumerator_t *enumerator; | |
1543 | traffic_selector_t *my_ts, *other_ts; | |
1544 | ||
2c116ef5 | 1545 | if (!(this->outbound_state & CHILD_OUTBOUND_SA)) |
c5fed4cd | 1546 | { |
2c116ef5 TB |
1547 | if (this->outbound_state & CHILD_OUTBOUND_REGISTERED) |
1548 | { | |
c5fed4cd TB |
1549 | chunk_clear(&this->encr_r); |
1550 | chunk_clear(&this->integ_r); | |
afbea8ce | 1551 | this->outbound_state = CHILD_OUTBOUND_NONE; |
2c116ef5 TB |
1552 | } |
1553 | return; | |
c5fed4cd TB |
1554 | } |
1555 | ||
2c116ef5 TB |
1556 | if (!this->config->has_option(this->config, OPT_NO_POLICIES) && |
1557 | (this->outbound_state & CHILD_OUTBOUND_POLICIES)) | |
c5fed4cd TB |
1558 | { |
1559 | ipsec_sa_cfg_t my_sa, other_sa; | |
1560 | uint32_t manual_prio; | |
1561 | ||
1562 | prepare_sa_cfg(this, &my_sa, &other_sa); | |
1563 | manual_prio = this->config->get_manual_prio(this->config); | |
1564 | ||
1565 | enumerator = create_policy_enumerator(this); | |
1566 | while (enumerator->enumerate(enumerator, &my_ts, &other_ts)) | |
1567 | { | |
1568 | del_policies_outbound(this, this->my_addr, this->other_addr, | |
1569 | my_ts, other_ts, &my_sa, &other_sa, | |
1570 | POLICY_IPSEC, POLICY_PRIORITY_DEFAULT, | |
1571 | manual_prio); | |
c5fed4cd TB |
1572 | } |
1573 | enumerator->destroy(enumerator); | |
1574 | } | |
1575 | ||
1576 | kernel_ipsec_sa_id_t id = { | |
1577 | .src = this->my_addr, | |
1578 | .dst = this->other_addr, | |
1579 | .spi = this->other_spi, | |
1580 | .proto = proto_ike2ip(this->protocol), | |
1581 | .mark = this->mark_out, | |
a6014d99 | 1582 | .if_id = this->if_id_out, |
c5fed4cd TB |
1583 | }; |
1584 | kernel_ipsec_del_sa_t sa = { | |
1585 | .cpi = this->other_cpi, | |
1586 | }; | |
1587 | charon->kernel->del_sa(charon->kernel, &id, &sa); | |
afbea8ce | 1588 | this->outbound_state = CHILD_OUTBOUND_NONE; |
c5fed4cd TB |
1589 | } |
1590 | ||
cad13450 TB |
1591 | METHOD(child_sa_t, set_rekey_spi, void, |
1592 | private_child_sa_t *this, uint32_t spi) | |
1593 | { | |
1594 | this->rekey_spi = spi; | |
1595 | } | |
1596 | ||
1597 | METHOD(child_sa_t, get_rekey_spi, uint32_t, | |
1598 | private_child_sa_t *this) | |
1599 | { | |
1600 | return this->rekey_spi; | |
1601 | } | |
1602 | ||
8a2e4d4a TB |
1603 | CALLBACK(reinstall_vip, void, |
1604 | host_t *vip, va_list args) | |
101d26ba | 1605 | { |
8a2e4d4a | 1606 | host_t *me; |
b185cdd1 MW |
1607 | char *iface; |
1608 | ||
8a2e4d4a | 1609 | VA_ARGS_VGET(args, me); |
8394ea2a | 1610 | if (charon->kernel->get_interface(charon->kernel, me, &iface)) |
b185cdd1 | 1611 | { |
8394ea2a TB |
1612 | charon->kernel->del_ip(charon->kernel, vip, -1, TRUE); |
1613 | charon->kernel->add_ip(charon->kernel, vip, -1, iface); | |
b185cdd1 MW |
1614 | free(iface); |
1615 | } | |
101d26ba MW |
1616 | } |
1617 | ||
35ef1b03 TB |
1618 | /** |
1619 | * Update addresses and encap state of IPsec SAs in the kernel | |
1620 | */ | |
1621 | static status_t update_sas(private_child_sa_t *this, host_t *me, host_t *other, | |
8f4cfe96 | 1622 | bool encap, uint32_t reqid) |
35ef1b03 TB |
1623 | { |
1624 | /* update our (initiator) SA */ | |
9118fd39 | 1625 | if (this->my_spi && this->inbound_installed) |
35ef1b03 TB |
1626 | { |
1627 | kernel_ipsec_sa_id_t id = { | |
1628 | .src = this->other_addr, | |
1629 | .dst = this->my_addr, | |
1630 | .spi = this->my_spi, | |
1631 | .proto = proto_ike2ip(this->protocol), | |
1632 | .mark = mark_in_sa(this), | |
a6014d99 | 1633 | .if_id = this->if_id_in, |
35ef1b03 TB |
1634 | }; |
1635 | kernel_ipsec_update_sa_t sa = { | |
1636 | .cpi = this->ipcomp != IPCOMP_NONE ? this->my_cpi : 0, | |
1637 | .new_src = other, | |
1638 | .new_dst = me, | |
1639 | .encap = this->encap, | |
1640 | .new_encap = encap, | |
8f4cfe96 | 1641 | .new_reqid = reqid, |
35ef1b03 TB |
1642 | }; |
1643 | if (charon->kernel->update_sa(charon->kernel, &id, | |
1644 | &sa) == NOT_SUPPORTED) | |
1645 | { | |
1646 | return NOT_SUPPORTED; | |
1647 | } | |
1648 | } | |
1649 | ||
1650 | /* update his (responder) SA */ | |
ca79bd54 | 1651 | if (this->other_spi && (this->outbound_state & CHILD_OUTBOUND_SA)) |
35ef1b03 TB |
1652 | { |
1653 | kernel_ipsec_sa_id_t id = { | |
1654 | .src = this->my_addr, | |
1655 | .dst = this->other_addr, | |
1656 | .spi = this->other_spi, | |
1657 | .proto = proto_ike2ip(this->protocol), | |
1658 | .mark = this->mark_out, | |
a6014d99 | 1659 | .if_id = this->if_id_out, |
35ef1b03 TB |
1660 | }; |
1661 | kernel_ipsec_update_sa_t sa = { | |
1662 | .cpi = this->ipcomp != IPCOMP_NONE ? this->other_cpi : 0, | |
1663 | .new_src = me, | |
1664 | .new_dst = other, | |
1665 | .encap = this->encap, | |
1666 | .new_encap = encap, | |
8f4cfe96 | 1667 | .new_reqid = reqid, |
35ef1b03 TB |
1668 | }; |
1669 | if (charon->kernel->update_sa(charon->kernel, &id, | |
1670 | &sa) == NOT_SUPPORTED) | |
1671 | { | |
1672 | return NOT_SUPPORTED; | |
1673 | } | |
1674 | } | |
1675 | /* we currently ignore the actual return values above */ | |
1676 | return SUCCESS; | |
1677 | } | |
1678 | ||
8f4cfe96 TB |
1679 | /** |
1680 | * Fill the second list with copies of the given traffic selectors updating | |
1681 | * dynamic traffic selectors based on the given addresses. | |
1682 | */ | |
1683 | static void update_ts(host_t *old_host, host_t *new_host, array_t *old_list, | |
1684 | array_t *new_list) | |
1685 | { | |
1686 | enumerator_t *enumerator; | |
1687 | traffic_selector_t *old_ts, *new_ts; | |
1688 | ||
1689 | enumerator = array_create_enumerator(old_list); | |
1690 | while (enumerator->enumerate(enumerator, &old_ts)) | |
1691 | { | |
1692 | new_ts = old_ts->clone(old_ts); | |
1693 | if (new_ts->is_host(new_ts, old_host)) | |
1694 | { | |
1695 | new_ts->set_address(new_ts, new_host); | |
1696 | } | |
1697 | array_insert(new_list, ARRAY_TAIL, new_ts); | |
1698 | } | |
1699 | enumerator->destroy(enumerator); | |
1700 | array_sort(new_list, (void*)traffic_selector_cmp, NULL); | |
1701 | } | |
1702 | ||
9d941742 | 1703 | METHOD(child_sa_t, update, status_t, |
35ef1b03 | 1704 | private_child_sa_t *this, host_t *me, host_t *other, linked_list_t *vips, |
101d26ba | 1705 | bool encap) |
1396815a | 1706 | { |
ad3af574 | 1707 | child_sa_state_t old; |
08c6ed9f | 1708 | bool transport_proxy_mode; |
7daf5226 | 1709 | |
2b3100b5 | 1710 | /* anything changed at all? */ |
dd83c6d4 | 1711 | if (me->equals(me, this->my_addr) && |
80853d84 | 1712 | other->equals(other, this->other_addr) && this->encap == encap) |
1396815a MW |
1713 | { |
1714 | return SUCCESS; | |
1715 | } | |
7daf5226 | 1716 | |
ad3af574 MW |
1717 | old = this->state; |
1718 | set_state(this, CHILD_UPDATING); | |
749ac175 TB |
1719 | transport_proxy_mode = this->mode == MODE_TRANSPORT && |
1720 | this->config->has_option(this->config, | |
1721 | OPT_PROXY_MODE); | |
7daf5226 | 1722 | |
35ef1b03 | 1723 | if (!this->config->has_option(this->config, OPT_NO_POLICIES) && |
29b491ed TB |
1724 | require_policy_update() && array_count(this->my_ts) && |
1725 | array_count(this->other_ts)) | |
ea625fab | 1726 | { |
35ef1b03 TB |
1727 | ipsec_sa_cfg_t my_sa, other_sa; |
1728 | enumerator_t *enumerator; | |
1729 | traffic_selector_t *my_ts, *other_ts; | |
8f4cfe96 | 1730 | array_t *new_my_ts = NULL, *new_other_ts = NULL; |
9619b1e7 | 1731 | policy_priority_t priority; |
8f4cfe96 | 1732 | uint32_t manual_prio, new_reqid = 0; |
35ef1b03 | 1733 | status_t state; |
529ffc2f | 1734 | bool outbound; |
35ef1b03 TB |
1735 | |
1736 | prepare_sa_cfg(this, &my_sa, &other_sa); | |
1737 | manual_prio = this->config->get_manual_prio(this->config); | |
9619b1e7 TB |
1738 | priority = this->trap ? POLICY_PRIORITY_ROUTED |
1739 | : POLICY_PRIORITY_DEFAULT; | |
1740 | outbound = (this->outbound_state & CHILD_OUTBOUND_POLICIES) || this->trap; | |
7daf5226 | 1741 | |
35ef1b03 TB |
1742 | enumerator = create_policy_enumerator(this); |
1743 | while (enumerator->enumerate(enumerator, &my_ts, &other_ts)) | |
7a915d62 | 1744 | { |
8f4cfe96 TB |
1745 | if (!new_my_ts && !me->ip_equals(me, this->my_addr) && |
1746 | my_ts->is_host(my_ts, this->my_addr)) | |
1747 | { | |
1748 | new_my_ts = array_create(0, 0); | |
1749 | } | |
1750 | if (!new_other_ts && !other->ip_equals(other, this->other_addr) && | |
1751 | other_ts->is_host(other_ts, this->other_addr)) | |
1752 | { | |
1753 | new_other_ts = array_create(0, 0); | |
1754 | } | |
35ef1b03 | 1755 | /* install drop policy to avoid traffic leaks, acquires etc. */ |
529ffc2f TB |
1756 | if (outbound) |
1757 | { | |
1758 | install_policies_outbound(this, this->my_addr, this->other_addr, | |
1759 | my_ts, other_ts, &my_sa, &other_sa, POLICY_DROP, | |
1760 | POLICY_PRIORITY_DEFAULT, manual_prio); | |
1761 | } | |
35ef1b03 TB |
1762 | /* remove old policies */ |
1763 | del_policies_internal(this, this->my_addr, this->other_addr, | |
1764 | my_ts, other_ts, &my_sa, &other_sa, POLICY_IPSEC, | |
9619b1e7 | 1765 | priority, manual_prio, outbound); |
7a915d62 | 1766 | } |
35ef1b03 | 1767 | enumerator->destroy(enumerator); |
7daf5226 | 1768 | |
8f4cfe96 TB |
1769 | if (new_my_ts) |
1770 | { | |
1771 | update_ts(this->my_addr, me, this->my_ts, new_my_ts); | |
1772 | } | |
1773 | if (new_other_ts) | |
1774 | { | |
1775 | update_ts(this->other_addr, other, this->other_ts, new_other_ts); | |
1776 | } | |
1777 | if (this->reqid_allocated && (new_my_ts || new_other_ts)) | |
1778 | { | |
1779 | /* if we allocated a reqid with the previous TS, we have to get a | |
1780 | * new one that matches the updated TS */ | |
1781 | if (alloc_reqid(this, new_my_ts ?: this->my_ts, | |
1782 | new_other_ts ?: this->other_ts, &new_reqid) != SUCCESS) | |
1783 | { | |
1784 | DBG1(DBG_CHD, "allocating new reqid for updated SA failed"); | |
1785 | } | |
1786 | } | |
1787 | ||
35ef1b03 | 1788 | /* update the IPsec SAs */ |
8f4cfe96 TB |
1789 | state = update_sas(this, me, other, encap, new_reqid); |
1790 | ||
1791 | /* install new/updated policies only if we were able to update the | |
1792 | * SAs, otherwise we reinstall the old policies further below */ | |
1793 | if (state != NOT_SUPPORTED) | |
1794 | { | |
1795 | /* we reinstall the virtual IP to handle interface roaming | |
1796 | * correctly */ | |
1797 | if (vips) | |
1798 | { | |
1799 | vips->invoke_function(vips, reinstall_vip, me); | |
1800 | } | |
1801 | if (new_reqid) | |
1802 | { | |
1803 | my_sa.reqid = other_sa.reqid = new_reqid; | |
1804 | } | |
1805 | enumerator = create_policy_enumerator_internal( | |
1806 | new_my_ts ?: this->my_ts, | |
1807 | new_other_ts ?: this->other_ts); | |
1808 | while (enumerator->enumerate(enumerator, &my_ts, &other_ts)) | |
1809 | { | |
1810 | install_policies_internal(this, me, other, my_ts, other_ts, | |
1811 | &my_sa, &other_sa, POLICY_IPSEC, | |
1812 | priority, manual_prio, outbound); | |
1813 | } | |
1814 | enumerator->destroy(enumerator); | |
1815 | if (new_reqid) | |
1816 | { | |
1817 | my_sa.reqid = other_sa.reqid = this->reqid; | |
1818 | } | |
1819 | } | |
7daf5226 | 1820 | |
35ef1b03 TB |
1821 | enumerator = create_policy_enumerator(this); |
1822 | while (enumerator->enumerate(enumerator, &my_ts, &other_ts)) | |
1823 | { | |
35ef1b03 TB |
1824 | /* reinstall the previous policies if we can't update the SAs */ |
1825 | if (state == NOT_SUPPORTED) | |
1826 | { | |
1827 | install_policies_internal(this, this->my_addr, this->other_addr, | |
529ffc2f | 1828 | my_ts, other_ts, &my_sa, &other_sa, POLICY_IPSEC, |
9619b1e7 | 1829 | priority, manual_prio, outbound); |
35ef1b03 | 1830 | } |
35ef1b03 | 1831 | /* remove the drop policy */ |
529ffc2f TB |
1832 | if (outbound) |
1833 | { | |
1834 | del_policies_outbound(this, this->my_addr, this->other_addr, | |
8f4cfe96 | 1835 | my_ts, other_ts, &my_sa, &other_sa, POLICY_DROP, |
8e31d657 | 1836 | POLICY_PRIORITY_DEFAULT, manual_prio); |
529ffc2f | 1837 | } |
35ef1b03 TB |
1838 | } |
1839 | enumerator->destroy(enumerator); | |
1840 | ||
1841 | if (state == NOT_SUPPORTED) | |
1842 | { | |
8f4cfe96 TB |
1843 | if (new_reqid && |
1844 | charon->kernel->release_reqid(charon->kernel, | |
02180ae2 | 1845 | new_reqid) != SUCCESS) |
8f4cfe96 TB |
1846 | { |
1847 | DBG1(DBG_CHD, "releasing reqid %u failed", new_reqid); | |
1848 | } | |
1849 | array_destroy_offset(new_my_ts, | |
1850 | offsetof(traffic_selector_t, destroy)); | |
1851 | array_destroy_offset(new_other_ts, | |
1852 | offsetof(traffic_selector_t, destroy)); | |
35ef1b03 TB |
1853 | set_state(this, old); |
1854 | return NOT_SUPPORTED; | |
1855 | } | |
1856 | ||
8f4cfe96 TB |
1857 | if (new_reqid) |
1858 | { | |
1859 | if (charon->kernel->release_reqid(charon->kernel, | |
02180ae2 | 1860 | this->reqid) != SUCCESS) |
8f4cfe96 TB |
1861 | { |
1862 | DBG1(DBG_CHD, "releasing reqid %u failed", this->reqid); | |
1863 | } | |
1864 | DBG1(DBG_CHD, "replaced reqid %u with reqid %u for updated " | |
1865 | "CHILD_SA %s{%d}", this->reqid, new_reqid, get_name(this), | |
1866 | this->unique_id); | |
1867 | this->reqid = new_reqid; | |
1868 | } | |
1869 | if (new_my_ts) | |
1870 | { | |
1871 | array_destroy_offset(this->my_ts, | |
1872 | offsetof(traffic_selector_t, destroy)); | |
1873 | this->my_ts = new_my_ts; | |
1874 | } | |
1875 | if (new_other_ts) | |
1876 | { | |
1877 | array_destroy_offset(this->other_ts, | |
1878 | offsetof(traffic_selector_t, destroy)); | |
1879 | this->other_ts = new_other_ts; | |
1880 | } | |
35ef1b03 TB |
1881 | } |
1882 | else if (!transport_proxy_mode) | |
1883 | { | |
8f4cfe96 | 1884 | if (update_sas(this, me, other, encap, 0) == NOT_SUPPORTED) |
35ef1b03 TB |
1885 | { |
1886 | set_state(this, old); | |
1887 | return NOT_SUPPORTED; | |
1396815a MW |
1888 | } |
1889 | } | |
7a915d62 | 1890 | |
08c6ed9f AS |
1891 | if (!transport_proxy_mode) |
1892 | { | |
1893 | /* apply hosts */ | |
1894 | if (!me->equals(me, this->my_addr)) | |
1895 | { | |
1896 | this->my_addr->destroy(this->my_addr); | |
1897 | this->my_addr = me->clone(me); | |
1898 | } | |
1899 | if (!other->equals(other, this->other_addr)) | |
1900 | { | |
1901 | this->other_addr->destroy(this->other_addr); | |
1902 | this->other_addr = other->clone(other); | |
1903 | } | |
1904 | } | |
1905 | ||
ea625fab | 1906 | this->encap = encap; |
ad3af574 | 1907 | set_state(this, old); |
7a915d62 | 1908 | |
1396815a MW |
1909 | return SUCCESS; |
1910 | } | |
1911 | ||
9d941742 TB |
1912 | METHOD(child_sa_t, destroy, void, |
1913 | private_child_sa_t *this) | |
30b5b412 | 1914 | { |
1df106bf MW |
1915 | enumerator_t *enumerator; |
1916 | traffic_selector_t *my_ts, *other_ts; | |
fbedc6a4 TB |
1917 | policy_priority_t priority; |
1918 | ||
c8f7a114 | 1919 | priority = this->trap ? POLICY_PRIORITY_ROUTED : POLICY_PRIORITY_DEFAULT; |
7daf5226 | 1920 | |
a985db3f | 1921 | set_state(this, CHILD_DESTROYING); |
7daf5226 | 1922 | |
749ac175 | 1923 | if (!this->config->has_option(this->config, OPT_NO_POLICIES)) |
695723d4 | 1924 | { |
a6e0f14f | 1925 | ipsec_sa_cfg_t my_sa, other_sa; |
7f57c4f9 | 1926 | uint32_t manual_prio; |
c5fed4cd | 1927 | bool del_outbound; |
a6e0f14f TB |
1928 | |
1929 | prepare_sa_cfg(this, &my_sa, &other_sa); | |
7f57c4f9 | 1930 | manual_prio = this->config->get_manual_prio(this->config); |
2c116ef5 TB |
1931 | del_outbound = (this->outbound_state & CHILD_OUTBOUND_POLICIES) || |
1932 | this->trap; | |
a6e0f14f | 1933 | |
d487b4b7 AS |
1934 | /* delete all policies in the kernel */ |
1935 | enumerator = create_policy_enumerator(this); | |
1936 | while (enumerator->enumerate(enumerator, &my_ts, &other_ts)) | |
1937 | { | |
529ffc2f TB |
1938 | del_policies_internal(this, this->my_addr, |
1939 | this->other_addr, my_ts, other_ts, &my_sa, &other_sa, | |
1940 | POLICY_IPSEC, priority, manual_prio, del_outbound); | |
d487b4b7 AS |
1941 | } |
1942 | enumerator->destroy(enumerator); | |
5d187bd2 | 1943 | } |
7daf5226 | 1944 | |
bb87e63c TB |
1945 | /* delete SAs in the kernel, if they are set up, inbound is always deleted |
1946 | * to remove allocated SPIs */ | |
1947 | if (this->my_spi) | |
46188b0e | 1948 | { |
89da06ac TB |
1949 | kernel_ipsec_sa_id_t id = { |
1950 | .src = this->other_addr, | |
1951 | .dst = this->my_addr, | |
1952 | .spi = this->my_spi, | |
1953 | .proto = proto_ike2ip(this->protocol), | |
ea43f8ff | 1954 | .mark = mark_in_sa(this), |
a6014d99 | 1955 | .if_id = this->if_id_in, |
89da06ac TB |
1956 | }; |
1957 | kernel_ipsec_del_sa_t sa = { | |
1958 | .cpi = this->my_cpi, | |
1959 | }; | |
1960 | charon->kernel->del_sa(charon->kernel, &id, &sa); | |
46188b0e | 1961 | } |
2c116ef5 | 1962 | if (this->other_spi && (this->outbound_state & CHILD_OUTBOUND_SA)) |
46188b0e | 1963 | { |
89da06ac TB |
1964 | kernel_ipsec_sa_id_t id = { |
1965 | .src = this->my_addr, | |
1966 | .dst = this->other_addr, | |
1967 | .spi = this->other_spi, | |
1968 | .proto = proto_ike2ip(this->protocol), | |
1969 | .mark = this->mark_out, | |
a6014d99 | 1970 | .if_id = this->if_id_out, |
89da06ac TB |
1971 | }; |
1972 | kernel_ipsec_del_sa_t sa = { | |
1973 | .cpi = this->other_cpi, | |
1974 | }; | |
1975 | charon->kernel->del_sa(charon->kernel, &id, &sa); | |
46188b0e TB |
1976 | } |
1977 | ||
13771206 | 1978 | if (this->reqid_allocated || (!this->static_reqid && this->reqid)) |
0da97f50 | 1979 | { |
8394ea2a | 1980 | if (charon->kernel->release_reqid(charon->kernel, |
02180ae2 | 1981 | this->reqid) != SUCCESS) |
0da97f50 MW |
1982 | { |
1983 | DBG1(DBG_CHD, "releasing reqid %u failed", this->reqid); | |
1984 | } | |
1985 | } | |
1986 | ||
2745ae26 MW |
1987 | array_destroy_offset(this->my_ts, offsetof(traffic_selector_t, destroy)); |
1988 | array_destroy_offset(this->other_ts, offsetof(traffic_selector_t, destroy)); | |
80853d84 MW |
1989 | this->my_addr->destroy(this->my_addr); |
1990 | this->other_addr->destroy(this->other_addr); | |
1991 | DESTROY_IF(this->proposal); | |
139d6558 | 1992 | DESTROY_IF(this->label); |
e0fe7651 | 1993 | this->config->destroy(this->config); |
8a3a389e TB |
1994 | chunk_clear(&this->encr_r); |
1995 | chunk_clear(&this->integ_r); | |
5113680f | 1996 | free(this); |
30b5b412 MW |
1997 | } |
1998 | ||
c6f1d0de MW |
1999 | /** |
2000 | * Get proxy address for one side, if any | |
2001 | */ | |
2002 | static host_t* get_proxy_addr(child_cfg_t *config, host_t *ike, bool local) | |
2003 | { | |
2004 | host_t *host = NULL; | |
b12c53ce | 2005 | uint8_t mask; |
c6f1d0de MW |
2006 | enumerator_t *enumerator; |
2007 | linked_list_t *ts_list, *list; | |
2008 | traffic_selector_t *ts; | |
2009 | ||
2010 | list = linked_list_create_with_items(ike, NULL); | |
84cdfbc9 | 2011 | ts_list = config->get_traffic_selectors(config, local, NULL, list, FALSE); |
c6f1d0de MW |
2012 | list->destroy(list); |
2013 | ||
2014 | enumerator = ts_list->create_enumerator(ts_list); | |
2015 | while (enumerator->enumerate(enumerator, &ts)) | |
2016 | { | |
2017 | if (ts->is_host(ts, NULL) && ts->to_subnet(ts, &host, &mask)) | |
2018 | { | |
2019 | DBG1(DBG_CHD, "%s address: %H is a transport mode proxy for %H", | |
2020 | local ? "my" : "other", ike, host); | |
2021 | break; | |
2022 | } | |
2023 | } | |
2024 | enumerator->destroy(enumerator); | |
2025 | ts_list->destroy_offset(ts_list, offsetof(traffic_selector_t, destroy)); | |
2026 | ||
2027 | if (!host) | |
2028 | { | |
2029 | host = ike->clone(ike); | |
2030 | } | |
2031 | return host; | |
2032 | } | |
2033 | ||
fafa7698 TB |
2034 | /* |
2035 | * Described in header | |
30b5b412 | 2036 | */ |
fafa7698 TB |
2037 | child_sa_t *child_sa_create(host_t *me, host_t *other, child_cfg_t *config, |
2038 | child_sa_create_t *data) | |
30b5b412 | 2039 | { |
9d941742 | 2040 | private_child_sa_t *this; |
dde40bcb | 2041 | static refcount_t unique_id = 0; |
9d941742 TB |
2042 | |
2043 | INIT(this, | |
2044 | .public = { | |
2045 | .get_name = _get_name, | |
2046 | .get_reqid = _get_reqid, | |
ff269f7f | 2047 | .get_reqid_ref = _get_reqid_ref, |
4ec397b8 | 2048 | .get_unique_id = _get_unique_id, |
9d941742 TB |
2049 | .get_config = _get_config, |
2050 | .get_state = _get_state, | |
2051 | .set_state = _set_state, | |
afbea8ce | 2052 | .get_outbound_state = _get_outbound_state, |
9d941742 TB |
2053 | .get_spi = _get_spi, |
2054 | .get_cpi = _get_cpi, | |
2055 | .get_protocol = _get_protocol, | |
2056 | .set_protocol = _set_protocol, | |
2057 | .get_mode = _get_mode, | |
2058 | .set_mode = _set_mode, | |
2059 | .get_proposal = _get_proposal, | |
2060 | .set_proposal = _set_proposal, | |
2061 | .get_lifetime = _get_lifetime, | |
763e0353 | 2062 | .get_installtime = _get_installtime, |
9d941742 | 2063 | .get_usestats = _get_usestats, |
79f39ecf | 2064 | .get_mark = _get_mark, |
a6014d99 | 2065 | .get_if_id = _get_if_id, |
139d6558 | 2066 | .get_label = _get_label, |
9d941742 TB |
2067 | .has_encap = _has_encap, |
2068 | .get_ipcomp = _get_ipcomp, | |
2069 | .set_ipcomp = _set_ipcomp, | |
2070 | .get_close_action = _get_close_action, | |
2071 | .set_close_action = _set_close_action, | |
2072 | .get_dpd_action = _get_dpd_action, | |
2073 | .set_dpd_action = _set_dpd_action, | |
2074 | .alloc_spi = _alloc_spi, | |
2075 | .alloc_cpi = _alloc_cpi, | |
2076 | .install = _install, | |
8a3a389e TB |
2077 | .register_outbound = _register_outbound, |
2078 | .install_outbound = _install_outbound, | |
c5fed4cd | 2079 | .remove_outbound = _remove_outbound, |
cad13450 TB |
2080 | .set_rekey_spi = _set_rekey_spi, |
2081 | .get_rekey_spi = _get_rekey_spi, | |
9d941742 | 2082 | .update = _update, |
4989aba8 TB |
2083 | .set_policies = _set_policies, |
2084 | .install_policies = _install_policies, | |
553bb787 | 2085 | .create_ts_enumerator = _create_ts_enumerator, |
9d941742 TB |
2086 | .create_policy_enumerator = _create_policy_enumerator, |
2087 | .destroy = _destroy, | |
2088 | }, | |
fafa7698 | 2089 | .encap = data->encap, |
9d941742 TB |
2090 | .ipcomp = IPCOMP_NONE, |
2091 | .state = CHILD_CREATED, | |
2745ae26 MW |
2092 | .my_ts = array_create(0, 0), |
2093 | .other_ts = array_create(0, 0), | |
9d941742 TB |
2094 | .protocol = PROTO_NONE, |
2095 | .mode = MODE_TUNNEL, | |
2096 | .close_action = config->get_close_action(config), | |
2097 | .dpd_action = config->get_dpd_action(config), | |
2098 | .reqid = config->get_reqid(config), | |
4aac88fa | 2099 | .unique_id = ref_get_nonzero(&unique_id), |
9d941742 TB |
2100 | .mark_in = config->get_mark(config, TRUE), |
2101 | .mark_out = config->get_mark(config, FALSE), | |
fafa7698 TB |
2102 | .if_id_in = config->get_if_id(config, TRUE) ?: data->if_id_in_def, |
2103 | .if_id_out = config->get_if_id(config, FALSE) ?: data->if_id_out_def, | |
139d6558 | 2104 | .label = data->label ? data->label->clone(data->label) : NULL, |
763e0353 | 2105 | .install_time = time_monotonic(NULL), |
749ac175 | 2106 | .policies_fwd_out = config->has_option(config, OPT_FWD_OUT_POLICIES), |
9d941742 TB |
2107 | ); |
2108 | ||
e0fe7651 MW |
2109 | this->config = config; |
2110 | config->get_ref(config); | |
ee26c537 | 2111 | |
fafa7698 | 2112 | if (data->mark_in) |
85b23888 | 2113 | { |
fafa7698 | 2114 | this->mark_in.value = data->mark_in; |
85b23888 | 2115 | } |
fafa7698 | 2116 | if (data->mark_out) |
85b23888 | 2117 | { |
fafa7698 | 2118 | this->mark_out.value = data->mark_out; |
85b23888 | 2119 | } |
fafa7698 | 2120 | if (data->if_id_in) |
a6014d99 | 2121 | { |
fafa7698 | 2122 | this->if_id_in = data->if_id_in; |
a6014d99 | 2123 | } |
fafa7698 | 2124 | if (data->if_id_out) |
a6014d99 | 2125 | { |
fafa7698 | 2126 | this->if_id_out = data->if_id_out; |
a6014d99 | 2127 | } |
32e5c492 | 2128 | |
9347f724 | 2129 | allocate_unique_if_ids(&this->if_id_in, &this->if_id_out); |
dde40bcb | 2130 | allocate_unique_marks(&this->mark_in.value, &this->mark_out.value); |
a6014d99 | 2131 | |
71a66a62 RB |
2132 | if (!this->reqid) |
2133 | { | |
c9998e5f TB |
2134 | /* reuse old reqid if we are rekeying an existing CHILD_SA and when |
2135 | * initiating a trap policy. While the reqid cache would find the same | |
2136 | * reqid for our selectors, this does not work in a special case: If an | |
2137 | * SA is triggered by a trap policy, but the negotiated TS get | |
2138 | * narrowed, we still must reuse the same reqid to successfully | |
2139 | * replace the temporary SA on the kernel level. Rekeying such an SA | |
2140 | * requires an explicit reqid, as the cache currently knows the original | |
2141 | * selectors only for that reqid. */ | |
13771206 TB |
2142 | if (data->reqid && |
2143 | charon->kernel->ref_reqid(charon->kernel, data->reqid) == SUCCESS) | |
2144 | { | |
2145 | this->reqid = data->reqid; | |
2146 | } | |
71a66a62 | 2147 | } |
3665adef TB |
2148 | else |
2149 | { | |
2150 | this->static_reqid = TRUE; | |
2151 | } | |
7daf5226 | 2152 | |
dd83c6d4 | 2153 | /* MIPv6 proxy transport mode sets SA endpoints to TS hosts */ |
d487b4b7 | 2154 | if (config->get_mode(config) == MODE_TRANSPORT && |
749ac175 | 2155 | config->has_option(config, OPT_PROXY_MODE)) |
d487b4b7 | 2156 | { |
d487b4b7 | 2157 | this->mode = MODE_TRANSPORT; |
7daf5226 | 2158 | |
c6f1d0de MW |
2159 | this->my_addr = get_proxy_addr(config, me, TRUE); |
2160 | this->other_addr = get_proxy_addr(config, other, FALSE); | |
2161 | } | |
2162 | else | |
2163 | { | |
2164 | this->my_addr = me->clone(me); | |
2165 | this->other_addr = other->clone(other); | |
d487b4b7 | 2166 | } |
1396815a | 2167 | return &this->public; |
3ebebc5e | 2168 | } |