5425861155f0fbd19924a10809c3bf45a1aa5f60
[strongswan.git] / src / libhydra / kernel / kernel_interface.c
1 /*
2 * Copyright (C) 2008-2012 Tobias Brunner
3 * Hochschule fuer Technik Rapperswil
4 * Copyright (C) 2010 Martin Willi
5 * Copyright (C) 2010 revosec AG
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 /*
19 * Copyright (c) 2012 Nanoteq Pty Ltd
20 *
21 * Permission is hereby granted, free of charge, to any person obtaining a copy
22 * of this software and associated documentation files (the "Software"), to deal
23 * in the Software without restriction, including without limitation the rights
24 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
25 * copies of the Software, and to permit persons to whom the Software is
26 * furnished to do so, subject to the following conditions:
27 *
28 * The above copyright notice and this permission notice shall be included in
29 * all copies or substantial portions of the Software.
30 *
31 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
32 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
33 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
34 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
35 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
36 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
37 * THE SOFTWARE.
38 */
39
40 #include "kernel_interface.h"
41
42 #include <hydra.h>
43 #include <utils/debug.h>
44 #include <threading/mutex.h>
45 #include <collections/linked_list.h>
46
47 typedef struct private_kernel_interface_t private_kernel_interface_t;
48
49 typedef struct kernel_algorithm_t kernel_algorithm_t;
50
51 /**
52 * Mapping of IKE algorithms to kernel-specific algorithm identifiers
53 */
54 struct kernel_algorithm_t {
55
56 /**
57 * Transform type of the algorithm
58 */
59 transform_type_t type;
60
61 /**
62 * Identifier specified in IKE
63 */
64 u_int16_t ike;
65
66 /**
67 * Identifier as defined in pfkeyv2.h
68 */
69 u_int16_t kernel;
70
71 /**
72 * Name of the algorithm in linux crypto API
73 */
74 char *name;
75 };
76
77 /**
78 * Private data of a kernel_interface_t object.
79 */
80 struct private_kernel_interface_t {
81
82 /**
83 * Public part of kernel_interface_t object.
84 */
85 kernel_interface_t public;
86
87 /**
88 * Registered IPsec constructor
89 */
90 kernel_ipsec_constructor_t ipsec_constructor;
91
92 /**
93 * Registered net constructor
94 */
95 kernel_net_constructor_t net_constructor;
96
97 /**
98 * ipsec interface
99 */
100 kernel_ipsec_t *ipsec;
101
102 /**
103 * network interface
104 */
105 kernel_net_t *net;
106
107 /**
108 * mutex for listeners
109 */
110 mutex_t *mutex;
111
112 /**
113 * list of registered listeners
114 */
115 linked_list_t *listeners;
116
117 /**
118 * mutex for algorithm mappings
119 */
120 mutex_t *mutex_algs;
121
122 /**
123 * List of algorithm mappings (kernel_algorithm_t*)
124 */
125 linked_list_t *algorithms;
126
127 /**
128 * List of interface names to include or exclude (char*), NULL if interfaces
129 * are not filtered
130 */
131 linked_list_t *ifaces_filter;
132
133 /**
134 * TRUE to exclude interfaces listed in ifaces_filter, FALSE to consider
135 * only those listed there
136 */
137 bool ifaces_exclude;
138 };
139
140 METHOD(kernel_interface_t, get_spi, status_t,
141 private_kernel_interface_t *this, host_t *src, host_t *dst,
142 u_int8_t protocol, u_int32_t reqid, u_int32_t *spi)
143 {
144 if (!this->ipsec)
145 {
146 return NOT_SUPPORTED;
147 }
148 return this->ipsec->get_spi(this->ipsec, src, dst, protocol, reqid, spi);
149 }
150
151 METHOD(kernel_interface_t, get_cpi, status_t,
152 private_kernel_interface_t *this, host_t *src, host_t *dst,
153 u_int32_t reqid, u_int16_t *cpi)
154 {
155 if (!this->ipsec)
156 {
157 return NOT_SUPPORTED;
158 }
159 return this->ipsec->get_cpi(this->ipsec, src, dst, reqid, cpi);
160 }
161
162 METHOD(kernel_interface_t, add_sa, status_t,
163 private_kernel_interface_t *this, host_t *src, host_t *dst,
164 u_int32_t spi, u_int8_t protocol, u_int32_t reqid, mark_t mark,
165 u_int32_t tfc, lifetime_cfg_t *lifetime, u_int16_t enc_alg, chunk_t enc_key,
166 u_int16_t int_alg, chunk_t int_key, ipsec_mode_t mode, u_int16_t ipcomp,
167 u_int16_t cpi, bool encap, bool esn, bool inbound,
168 traffic_selector_t *src_ts, traffic_selector_t *dst_ts)
169 {
170 if (!this->ipsec)
171 {
172 return NOT_SUPPORTED;
173 }
174 return this->ipsec->add_sa(this->ipsec, src, dst, spi, protocol, reqid,
175 mark, tfc, lifetime, enc_alg, enc_key, int_alg, int_key, mode,
176 ipcomp, cpi, encap, esn, inbound, src_ts, dst_ts);
177 }
178
179 METHOD(kernel_interface_t, update_sa, status_t,
180 private_kernel_interface_t *this, u_int32_t spi, u_int8_t protocol,
181 u_int16_t cpi, host_t *src, host_t *dst, host_t *new_src, host_t *new_dst,
182 bool encap, bool new_encap, mark_t mark)
183 {
184 if (!this->ipsec)
185 {
186 return NOT_SUPPORTED;
187 }
188 return this->ipsec->update_sa(this->ipsec, spi, protocol, cpi, src, dst,
189 new_src, new_dst, encap, new_encap, mark);
190 }
191
192 METHOD(kernel_interface_t, query_sa, status_t,
193 private_kernel_interface_t *this, host_t *src, host_t *dst,
194 u_int32_t spi, u_int8_t protocol, mark_t mark, u_int64_t *bytes)
195 {
196 if (!this->ipsec)
197 {
198 return NOT_SUPPORTED;
199 }
200 return this->ipsec->query_sa(this->ipsec, src, dst, spi, protocol, mark, bytes);
201 }
202
203 METHOD(kernel_interface_t, del_sa, status_t,
204 private_kernel_interface_t *this, host_t *src, host_t *dst, u_int32_t spi,
205 u_int8_t protocol, u_int16_t cpi, mark_t mark)
206 {
207 if (!this->ipsec)
208 {
209 return NOT_SUPPORTED;
210 }
211 return this->ipsec->del_sa(this->ipsec, src, dst, spi, protocol, cpi, mark);
212 }
213
214 METHOD(kernel_interface_t, flush_sas, status_t,
215 private_kernel_interface_t *this)
216 {
217 if (!this->ipsec)
218 {
219 return NOT_SUPPORTED;
220 }
221 return this->ipsec->flush_sas(this->ipsec);
222 }
223
224 METHOD(kernel_interface_t, add_policy, status_t,
225 private_kernel_interface_t *this, host_t *src, host_t *dst,
226 traffic_selector_t *src_ts, traffic_selector_t *dst_ts,
227 policy_dir_t direction, policy_type_t type, ipsec_sa_cfg_t *sa,
228 mark_t mark, policy_priority_t priority)
229 {
230 if (!this->ipsec)
231 {
232 return NOT_SUPPORTED;
233 }
234 return this->ipsec->add_policy(this->ipsec, src, dst, src_ts, dst_ts,
235 direction, type, sa, mark, priority);
236 }
237
238 METHOD(kernel_interface_t, query_policy, status_t,
239 private_kernel_interface_t *this, traffic_selector_t *src_ts,
240 traffic_selector_t *dst_ts, policy_dir_t direction, mark_t mark,
241 u_int32_t *use_time)
242 {
243 if (!this->ipsec)
244 {
245 return NOT_SUPPORTED;
246 }
247 return this->ipsec->query_policy(this->ipsec, src_ts, dst_ts,
248 direction, mark, use_time);
249 }
250
251 METHOD(kernel_interface_t, del_policy, status_t,
252 private_kernel_interface_t *this, traffic_selector_t *src_ts,
253 traffic_selector_t *dst_ts, policy_dir_t direction, u_int32_t reqid,
254 mark_t mark, policy_priority_t priority)
255 {
256 if (!this->ipsec)
257 {
258 return NOT_SUPPORTED;
259 }
260 return this->ipsec->del_policy(this->ipsec, src_ts, dst_ts,
261 direction, reqid, mark, priority);
262 }
263
264 METHOD(kernel_interface_t, flush_policies, status_t,
265 private_kernel_interface_t *this)
266 {
267 if (!this->ipsec)
268 {
269 return NOT_SUPPORTED;
270 }
271 return this->ipsec->flush_policies(this->ipsec);
272 }
273
274 METHOD(kernel_interface_t, get_source_addr, host_t*,
275 private_kernel_interface_t *this, host_t *dest, host_t *src)
276 {
277 if (!this->net)
278 {
279 return NULL;
280 }
281 return this->net->get_source_addr(this->net, dest, src);
282 }
283
284 METHOD(kernel_interface_t, get_nexthop, host_t*,
285 private_kernel_interface_t *this, host_t *dest, host_t *src)
286 {
287 if (!this->net)
288 {
289 return NULL;
290 }
291 return this->net->get_nexthop(this->net, dest, src);
292 }
293
294 METHOD(kernel_interface_t, get_interface, bool,
295 private_kernel_interface_t *this, host_t *host, char **name)
296 {
297 if (!this->net)
298 {
299 return NULL;
300 }
301 return this->net->get_interface(this->net, host, name);
302 }
303
304 METHOD(kernel_interface_t, create_address_enumerator, enumerator_t*,
305 private_kernel_interface_t *this, kernel_address_type_t which)
306 {
307 if (!this->net)
308 {
309 return enumerator_create_empty();
310 }
311 return this->net->create_address_enumerator(this->net, which);
312 }
313
314 METHOD(kernel_interface_t, add_ip, status_t,
315 private_kernel_interface_t *this, host_t *virtual_ip, host_t *iface_ip)
316 {
317 if (!this->net)
318 {
319 return NOT_SUPPORTED;
320 }
321 return this->net->add_ip(this->net, virtual_ip, iface_ip);
322 }
323
324 METHOD(kernel_interface_t, del_ip, status_t,
325 private_kernel_interface_t *this, host_t *virtual_ip)
326 {
327 if (!this->net)
328 {
329 return NOT_SUPPORTED;
330 }
331 return this->net->del_ip(this->net, virtual_ip);
332 }
333
334 METHOD(kernel_interface_t, add_route, status_t,
335 private_kernel_interface_t *this, chunk_t dst_net,
336 u_int8_t prefixlen, host_t *gateway, host_t *src_ip, char *if_name)
337 {
338 if (!this->net)
339 {
340 return NOT_SUPPORTED;
341 }
342 return this->net->add_route(this->net, dst_net, prefixlen, gateway,
343 src_ip, if_name);
344 }
345
346 METHOD(kernel_interface_t, del_route, status_t,
347 private_kernel_interface_t *this, chunk_t dst_net,
348 u_int8_t prefixlen, host_t *gateway, host_t *src_ip, char *if_name)
349 {
350 if (!this->net)
351 {
352 return NOT_SUPPORTED;
353 }
354 return this->net->del_route(this->net, dst_net, prefixlen, gateway,
355 src_ip, if_name);
356 }
357
358 METHOD(kernel_interface_t, bypass_socket, bool,
359 private_kernel_interface_t *this, int fd, int family)
360 {
361 if (!this->ipsec)
362 {
363 return FALSE;
364 }
365 return this->ipsec->bypass_socket(this->ipsec, fd, family);
366 }
367
368 METHOD(kernel_interface_t, enable_udp_decap, bool,
369 private_kernel_interface_t *this, int fd, int family, u_int16_t port)
370 {
371 if (!this->ipsec)
372 {
373 return FALSE;
374 }
375 return this->ipsec->enable_udp_decap(this->ipsec, fd, family, port);
376 }
377
378 METHOD(kernel_interface_t, is_interface_usable, bool,
379 private_kernel_interface_t *this, const char *iface)
380 {
381 status_t expected;
382
383 if (!this->ifaces_filter)
384 {
385 return TRUE;
386 }
387 expected = this->ifaces_exclude ? NOT_FOUND : SUCCESS;
388 return this->ifaces_filter->find_first(this->ifaces_filter, (void*)streq,
389 NULL, iface) == expected;
390 }
391
392 METHOD(kernel_interface_t, all_interfaces_usable, bool,
393 private_kernel_interface_t *this)
394 {
395 return this->ifaces_filter == NULL;
396 }
397
398 METHOD(kernel_interface_t, get_address_by_ts, status_t,
399 private_kernel_interface_t *this, traffic_selector_t *ts, host_t **ip)
400 {
401 enumerator_t *addrs;
402 host_t *host;
403 int family;
404 bool found = FALSE;
405
406 DBG2(DBG_KNL, "getting a local address in traffic selector %R", ts);
407
408 /* if we have a family which includes localhost, we do not
409 * search for an IP, we use the default */
410 family = ts->get_type(ts) == TS_IPV4_ADDR_RANGE ? AF_INET : AF_INET6;
411
412 if (family == AF_INET)
413 {
414 host = host_create_from_string("127.0.0.1", 0);
415 }
416 else
417 {
418 host = host_create_from_string("::1", 0);
419 }
420
421 if (ts->includes(ts, host))
422 {
423 *ip = host_create_any(family);
424 host->destroy(host);
425 DBG2(DBG_KNL, "using host %H", *ip);
426 return SUCCESS;
427 }
428 host->destroy(host);
429
430 addrs = create_address_enumerator(this, ADDR_TYPE_ALL);
431 while (addrs->enumerate(addrs, (void**)&host))
432 {
433 if (ts->includes(ts, host))
434 {
435 found = TRUE;
436 *ip = host->clone(host);
437 break;
438 }
439 }
440 addrs->destroy(addrs);
441
442 if (!found)
443 {
444 DBG2(DBG_KNL, "no local address found in traffic selector %R", ts);
445 return FAILED;
446 }
447
448 DBG2(DBG_KNL, "using host %H", *ip);
449 return SUCCESS;
450 }
451
452
453 METHOD(kernel_interface_t, add_ipsec_interface, void,
454 private_kernel_interface_t *this, kernel_ipsec_constructor_t constructor)
455 {
456 if (!this->ipsec)
457 {
458 this->ipsec_constructor = constructor;
459 this->ipsec = constructor();
460 }
461 }
462
463 METHOD(kernel_interface_t, remove_ipsec_interface, void,
464 private_kernel_interface_t *this, kernel_ipsec_constructor_t constructor)
465 {
466 if (constructor == this->ipsec_constructor && this->ipsec)
467 {
468 this->ipsec->destroy(this->ipsec);
469 this->ipsec = NULL;
470 }
471 }
472
473 METHOD(kernel_interface_t, add_net_interface, void,
474 private_kernel_interface_t *this, kernel_net_constructor_t constructor)
475 {
476 if (!this->net)
477 {
478 this->net_constructor = constructor;
479 this->net = constructor();
480 }
481 }
482
483 METHOD(kernel_interface_t, remove_net_interface, void,
484 private_kernel_interface_t *this, kernel_net_constructor_t constructor)
485 {
486 if (constructor == this->net_constructor && this->net)
487 {
488 this->net->destroy(this->net);
489 this->net = NULL;
490 }
491 }
492
493 METHOD(kernel_interface_t, add_listener, void,
494 private_kernel_interface_t *this, kernel_listener_t *listener)
495 {
496 this->mutex->lock(this->mutex);
497 this->listeners->insert_last(this->listeners, listener);
498 this->mutex->unlock(this->mutex);
499 }
500
501 METHOD(kernel_interface_t, remove_listener, void,
502 private_kernel_interface_t *this, kernel_listener_t *listener)
503 {
504 this->mutex->lock(this->mutex);
505 this->listeners->remove(this->listeners, listener, NULL);
506 this->mutex->unlock(this->mutex);
507 }
508
509 METHOD(kernel_interface_t, acquire, void,
510 private_kernel_interface_t *this, u_int32_t reqid,
511 traffic_selector_t *src_ts, traffic_selector_t *dst_ts)
512 {
513 kernel_listener_t *listener;
514 enumerator_t *enumerator;
515 this->mutex->lock(this->mutex);
516 enumerator = this->listeners->create_enumerator(this->listeners);
517 while (enumerator->enumerate(enumerator, &listener))
518 {
519 if (listener->acquire &&
520 !listener->acquire(listener, reqid, src_ts, dst_ts))
521 {
522 this->listeners->remove_at(this->listeners, enumerator);
523 }
524 }
525 enumerator->destroy(enumerator);
526 this->mutex->unlock(this->mutex);
527 }
528
529 METHOD(kernel_interface_t, expire, void,
530 private_kernel_interface_t *this, u_int32_t reqid, u_int8_t protocol,
531 u_int32_t spi, bool hard)
532 {
533 kernel_listener_t *listener;
534 enumerator_t *enumerator;
535 this->mutex->lock(this->mutex);
536 enumerator = this->listeners->create_enumerator(this->listeners);
537 while (enumerator->enumerate(enumerator, &listener))
538 {
539 if (listener->expire &&
540 !listener->expire(listener, reqid, protocol, spi, hard))
541 {
542 this->listeners->remove_at(this->listeners, enumerator);
543 }
544 }
545 enumerator->destroy(enumerator);
546 this->mutex->unlock(this->mutex);
547 }
548
549 METHOD(kernel_interface_t, mapping, void,
550 private_kernel_interface_t *this, u_int32_t reqid, u_int32_t spi,
551 host_t *remote)
552 {
553 kernel_listener_t *listener;
554 enumerator_t *enumerator;
555 this->mutex->lock(this->mutex);
556 enumerator = this->listeners->create_enumerator(this->listeners);
557 while (enumerator->enumerate(enumerator, &listener))
558 {
559 if (listener->mapping &&
560 !listener->mapping(listener, reqid, spi, remote))
561 {
562 this->listeners->remove_at(this->listeners, enumerator);
563 }
564 }
565 enumerator->destroy(enumerator);
566 this->mutex->unlock(this->mutex);
567 }
568
569 METHOD(kernel_interface_t, migrate, void,
570 private_kernel_interface_t *this, u_int32_t reqid,
571 traffic_selector_t *src_ts, traffic_selector_t *dst_ts,
572 policy_dir_t direction, host_t *local, host_t *remote)
573 {
574 kernel_listener_t *listener;
575 enumerator_t *enumerator;
576 this->mutex->lock(this->mutex);
577 enumerator = this->listeners->create_enumerator(this->listeners);
578 while (enumerator->enumerate(enumerator, &listener))
579 {
580 if (listener->migrate &&
581 !listener->migrate(listener, reqid, src_ts, dst_ts, direction,
582 local, remote))
583 {
584 this->listeners->remove_at(this->listeners, enumerator);
585 }
586 }
587 enumerator->destroy(enumerator);
588 this->mutex->unlock(this->mutex);
589 }
590
591 static bool call_roam(kernel_listener_t *listener, bool *roam)
592 {
593 return listener->roam && !listener->roam(listener, *roam);
594 }
595
596 METHOD(kernel_interface_t, roam, void,
597 private_kernel_interface_t *this, bool address)
598 {
599 this->mutex->lock(this->mutex);
600 this->listeners->remove(this->listeners, &address, (void*)call_roam);
601 this->mutex->unlock(this->mutex);
602 }
603
604 METHOD(kernel_interface_t, register_algorithm, void,
605 private_kernel_interface_t *this, u_int16_t alg_id, transform_type_t type,
606 u_int16_t kernel_id, char *kernel_name)
607 {
608 kernel_algorithm_t *algorithm;
609
610 INIT(algorithm,
611 .type = type,
612 .ike = alg_id,
613 .kernel = kernel_id,
614 .name = strdup(kernel_name),
615 );
616
617 this->mutex_algs->lock(this->mutex_algs);
618 this->algorithms->insert_first(this->algorithms, algorithm);
619 this->mutex_algs->unlock(this->mutex_algs);
620 }
621
622 METHOD(kernel_interface_t, lookup_algorithm, bool,
623 private_kernel_interface_t *this, u_int16_t alg_id, transform_type_t type,
624 u_int16_t *kernel_id, char **kernel_name)
625 {
626 kernel_algorithm_t *algorithm;
627 enumerator_t *enumerator;
628 bool found = FALSE;
629
630 this->mutex_algs->lock(this->mutex_algs);
631 enumerator = this->algorithms->create_enumerator(this->algorithms);
632 while (enumerator->enumerate(enumerator, &algorithm))
633 {
634 if (algorithm->type == type && algorithm->ike == alg_id)
635 {
636 if (kernel_id)
637 {
638 *kernel_id = algorithm->kernel;
639 }
640 if (kernel_name)
641 {
642 *kernel_name = algorithm->name;
643 }
644 found = TRUE;
645 break;
646 }
647 }
648 enumerator->destroy(enumerator);
649 this->mutex_algs->unlock(this->mutex_algs);
650 return found;
651 }
652
653 METHOD(kernel_interface_t, destroy, void,
654 private_kernel_interface_t *this)
655 {
656 kernel_algorithm_t *algorithm;
657
658 while (this->algorithms->remove_first(this->algorithms,
659 (void**)&algorithm) == SUCCESS)
660 {
661 free(algorithm->name);
662 free(algorithm);
663 }
664 this->algorithms->destroy(this->algorithms);
665 this->mutex_algs->destroy(this->mutex_algs);
666 DESTROY_IF(this->ipsec);
667 DESTROY_IF(this->net);
668 DESTROY_FUNCTION_IF(this->ifaces_filter, (void*)free);
669 this->listeners->destroy(this->listeners);
670 this->mutex->destroy(this->mutex);
671 free(this);
672 }
673
674 /*
675 * Described in header-file
676 */
677 kernel_interface_t *kernel_interface_create()
678 {
679 private_kernel_interface_t *this;
680 char *ifaces;
681
682 INIT(this,
683 .public = {
684 .get_spi = _get_spi,
685 .get_cpi = _get_cpi,
686 .add_sa = _add_sa,
687 .update_sa = _update_sa,
688 .query_sa = _query_sa,
689 .del_sa = _del_sa,
690 .flush_sas = _flush_sas,
691 .add_policy = _add_policy,
692 .query_policy = _query_policy,
693 .del_policy = _del_policy,
694 .flush_policies = _flush_policies,
695 .get_source_addr = _get_source_addr,
696 .get_nexthop = _get_nexthop,
697 .get_interface = _get_interface,
698 .create_address_enumerator = _create_address_enumerator,
699 .add_ip = _add_ip,
700 .del_ip = _del_ip,
701 .add_route = _add_route,
702 .del_route = _del_route,
703 .bypass_socket = _bypass_socket,
704 .enable_udp_decap = _enable_udp_decap,
705
706 .is_interface_usable = _is_interface_usable,
707 .all_interfaces_usable = _all_interfaces_usable,
708 .get_address_by_ts = _get_address_by_ts,
709 .add_ipsec_interface = _add_ipsec_interface,
710 .remove_ipsec_interface = _remove_ipsec_interface,
711 .add_net_interface = _add_net_interface,
712 .remove_net_interface = _remove_net_interface,
713
714 .add_listener = _add_listener,
715 .remove_listener = _remove_listener,
716 .register_algorithm = _register_algorithm,
717 .lookup_algorithm = _lookup_algorithm,
718 .acquire = _acquire,
719 .expire = _expire,
720 .mapping = _mapping,
721 .migrate = _migrate,
722 .roam = _roam,
723 .destroy = _destroy,
724 },
725 .mutex = mutex_create(MUTEX_TYPE_DEFAULT),
726 .listeners = linked_list_create(),
727 .mutex_algs = mutex_create(MUTEX_TYPE_DEFAULT),
728 .algorithms = linked_list_create(),
729 );
730
731 ifaces = lib->settings->get_str(lib->settings,
732 "%s.interfaces_use", NULL, hydra->daemon);
733 if (!ifaces)
734 {
735 this->ifaces_exclude = TRUE;
736 ifaces = lib->settings->get_str(lib->settings,
737 "%s.interfaces_ignore", NULL, hydra->daemon);
738 }
739 if (ifaces)
740 {
741 enumerator_t *enumerator;
742 char *iface;
743
744 enumerator = enumerator_create_token(ifaces, ",", " ");
745 while (enumerator->enumerate(enumerator, &iface))
746 {
747 if (!this->ifaces_filter)
748 {
749 this->ifaces_filter = linked_list_create();
750 }
751 this->ifaces_filter->insert_last(this->ifaces_filter,
752 strdup(iface));
753 }
754 enumerator->destroy(enumerator);
755 }
756
757 return &this->public;
758 }
759