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1.1 misho 1: /*
2: * Copyright (C) 2011-2012 Tobias Brunner
3: * HSR Hochschule fuer Technik Rapperswil
4: *
5: * Copyright (C) 2011 Martin Willi
6: * Copyright (C) 2011 revosec AG
7: *
8: * This program is free software; you can redistribute it and/or modify it
9: * under the terms of the GNU General Public License as published by the
10: * Free Software Foundation; either version 2 of the License, or (at your
11: * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
12: *
13: * This program is distributed in the hope that it will be useful, but
14: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16: * for more details.
17: */
18:
19: #include "main_mode.h"
20:
21: #include <string.h>
22:
23: #include <daemon.h>
24: #include <sa/ikev1/phase1.h>
25: #include <encoding/payloads/sa_payload.h>
26: #include <encoding/payloads/id_payload.h>
27: #include <encoding/payloads/hash_payload.h>
28: #include <sa/ikev1/tasks/xauth.h>
29: #include <sa/ikev1/tasks/mode_config.h>
30: #include <sa/ikev1/tasks/informational.h>
31: #include <sa/ikev1/tasks/isakmp_delete.h>
32: #include <processing/jobs/adopt_children_job.h>
33: #include <processing/jobs/delete_ike_sa_job.h>
34:
35: typedef struct private_main_mode_t private_main_mode_t;
36:
37: /**
38: * Private members of a main_mode_t task.
39: */
40: struct private_main_mode_t {
41:
42: /**
43: * Public methods and task_t interface.
44: */
45: main_mode_t public;
46:
47: /**
48: * Assigned IKE_SA.
49: */
50: ike_sa_t *ike_sa;
51:
52: /**
53: * Are we the initiator?
54: */
55: bool initiator;
56:
57: /**
58: * Common phase 1 helper class
59: */
60: phase1_t *ph1;
61:
62: /**
63: * IKE config to establish
64: */
65: ike_cfg_t *ike_cfg;
66:
67: /**
68: * Peer config to use
69: */
70: peer_cfg_t *peer_cfg;
71:
72: /**
73: * selected IKE proposal
74: */
75: proposal_t *proposal;
76:
77: /**
78: * Negotiated SA lifetime
79: */
80: uint32_t lifetime;
81:
82: /**
83: * Negotiated authentication method
84: */
85: auth_method_t method;
86:
87: /** states of main mode */
88: enum {
89: MM_INIT,
90: MM_SA,
91: MM_KE,
92: MM_AUTH,
93: } state;
94: };
95:
96: /**
97: * Set IKE_SA to established state
98: */
99: static bool establish(private_main_mode_t *this)
100: {
101: if (!charon->bus->authorize(charon->bus, TRUE))
102: {
103: DBG1(DBG_IKE, "final authorization hook forbids IKE_SA, cancelling");
104: return FALSE;
105: }
106:
107: DBG0(DBG_IKE, "IKE_SA %s[%d] established between %H[%Y]...%H[%Y]",
108: this->ike_sa->get_name(this->ike_sa),
109: this->ike_sa->get_unique_id(this->ike_sa),
110: this->ike_sa->get_my_host(this->ike_sa),
111: this->ike_sa->get_my_id(this->ike_sa),
112: this->ike_sa->get_other_host(this->ike_sa),
113: this->ike_sa->get_other_id(this->ike_sa));
114:
115: this->ike_sa->set_state(this->ike_sa, IKE_ESTABLISHED);
116: charon->bus->ike_updown(charon->bus, this->ike_sa, TRUE);
117:
118: return TRUE;
119: }
120:
121: /**
122: * Check for notify errors, return TRUE if error found
123: */
124: static bool has_notify_errors(private_main_mode_t *this, message_t *message)
125: {
126: enumerator_t *enumerator;
127: payload_t *payload;
128: bool err = FALSE;
129:
130: enumerator = message->create_payload_enumerator(message);
131: while (enumerator->enumerate(enumerator, &payload))
132: {
133: if (payload->get_type(payload) == PLV1_NOTIFY)
134: {
135: notify_payload_t *notify;
136: notify_type_t type;
137:
138: notify = (notify_payload_t*)payload;
139: type = notify->get_notify_type(notify);
140: if (type < 16384)
141: {
142: DBG1(DBG_IKE, "received %N error notify",
143: notify_type_names, type);
144: err = TRUE;
145: }
146: else if (type == INITIAL_CONTACT_IKEV1)
147: {
148: if (!this->initiator && this->state == MM_AUTH)
149: {
150: /* If authenticated and received INITIAL_CONTACT,
151: * delete any existing IKE_SAs with that peer.
152: * The delete takes place when the SA is checked in due
153: * to other id not known until the 3rd message.*/
154: this->ike_sa->set_condition(this->ike_sa,
155: COND_INIT_CONTACT_SEEN, TRUE);
156: }
157: }
158: else
159: {
160: DBG1(DBG_IKE, "received %N notify", notify_type_names, type);
161: }
162: }
163: }
164: enumerator->destroy(enumerator);
165:
166: return err;
167: }
168:
169: /**
170: * Queue a task sending a notify in an INFORMATIONAL exchange
171: */
172: static status_t send_notify(private_main_mode_t *this, notify_type_t type)
173: {
174: notify_payload_t *notify;
175: ike_sa_id_t *ike_sa_id;
176: uint64_t spi_i, spi_r;
177: chunk_t spi;
178:
179: notify = notify_payload_create_from_protocol_and_type(PLV1_NOTIFY,
180: PROTO_IKE, type);
181: ike_sa_id = this->ike_sa->get_id(this->ike_sa);
182: spi_i = ike_sa_id->get_initiator_spi(ike_sa_id);
183: spi_r = ike_sa_id->get_responder_spi(ike_sa_id);
184: spi = chunk_cata("cc", chunk_from_thing(spi_i), chunk_from_thing(spi_r));
185: notify->set_spi_data(notify, spi);
186:
187: this->ike_sa->queue_task(this->ike_sa,
188: (task_t*)informational_create(this->ike_sa, notify));
189: /* cancel all active/passive tasks in favour of informational */
190: this->ike_sa->flush_queue(this->ike_sa,
191: this->initiator ? TASK_QUEUE_ACTIVE : TASK_QUEUE_PASSIVE);
192: return ALREADY_DONE;
193: }
194:
195: /**
196: * Queue a delete task if authentication failed as initiator
197: */
198: static status_t send_delete(private_main_mode_t *this)
199: {
200: this->ike_sa->queue_task(this->ike_sa,
201: (task_t*)isakmp_delete_create(this->ike_sa, TRUE));
202: /* cancel all active tasks in favour of informational */
203: this->ike_sa->flush_queue(this->ike_sa,
204: this->initiator ? TASK_QUEUE_ACTIVE : TASK_QUEUE_PASSIVE);
205: return ALREADY_DONE;
206: }
207:
208: /**
209: * Add an INITIAL_CONTACT notify if first contact with peer
210: */
211: static void add_initial_contact(private_main_mode_t *this, message_t *message,
212: identification_t *idi)
213: {
214: identification_t *idr;
215: host_t *host;
216: notify_payload_t *notify;
217: ike_sa_id_t *ike_sa_id;
218: uint64_t spi_i, spi_r;
219: chunk_t spi;
220:
221: idr = this->ph1->get_id(this->ph1, this->peer_cfg, FALSE);
222: if (idr && !idr->contains_wildcards(idr))
223: {
224: if (this->peer_cfg->get_unique_policy(this->peer_cfg) != UNIQUE_NEVER)
225: {
226: host = this->ike_sa->get_other_host(this->ike_sa);
227: if (!charon->ike_sa_manager->has_contact(charon->ike_sa_manager,
228: idi, idr, host->get_family(host)))
229: {
230: notify = notify_payload_create_from_protocol_and_type(
231: PLV1_NOTIFY, PROTO_IKE, INITIAL_CONTACT_IKEV1);
232: ike_sa_id = this->ike_sa->get_id(this->ike_sa);
233: spi_i = ike_sa_id->get_initiator_spi(ike_sa_id);
234: spi_r = ike_sa_id->get_responder_spi(ike_sa_id);
235: spi = chunk_cata("cc", chunk_from_thing(spi_i),
236: chunk_from_thing(spi_r));
237: notify->set_spi_data(notify, spi);
238: message->add_payload(message, (payload_t*)notify);
239: }
240: }
241: }
242: }
243:
244: METHOD(task_t, build_i, status_t,
245: private_main_mode_t *this, message_t *message)
246: {
247: switch (this->state)
248: {
249: case MM_INIT:
250: {
251: sa_payload_t *sa_payload;
252: linked_list_t *proposals;
253: packet_t *packet;
254:
255: DBG0(DBG_IKE, "initiating Main Mode IKE_SA %s[%d] to %H",
256: this->ike_sa->get_name(this->ike_sa),
257: this->ike_sa->get_unique_id(this->ike_sa),
258: this->ike_sa->get_other_host(this->ike_sa));
259: this->ike_sa->set_state(this->ike_sa, IKE_CONNECTING);
260:
261: this->ike_cfg = this->ike_sa->get_ike_cfg(this->ike_sa);
262: this->peer_cfg = this->ike_sa->get_peer_cfg(this->ike_sa);
263: this->peer_cfg->get_ref(this->peer_cfg);
264:
265: this->method = this->ph1->get_auth_method(this->ph1, this->peer_cfg);
266: if (this->method == AUTH_NONE)
267: {
268: DBG1(DBG_CFG, "configuration uses unsupported authentication");
269: return FAILED;
270: }
271: this->lifetime = this->peer_cfg->get_reauth_time(this->peer_cfg,
272: FALSE);
273: if (!this->lifetime)
274: { /* fall back to rekey time of no rekey time configured */
275: this->lifetime = this->peer_cfg->get_rekey_time(this->peer_cfg,
276: FALSE);
277: }
278: this->lifetime += this->peer_cfg->get_over_time(this->peer_cfg);
279: proposals = this->ike_cfg->get_proposals(this->ike_cfg);
280: sa_payload = sa_payload_create_from_proposals_v1(proposals,
281: this->lifetime, 0, this->method, MODE_NONE,
282: ENCAP_NONE, 0);
283: proposals->destroy_offset(proposals, offsetof(proposal_t, destroy));
284:
285: message->add_payload(message, &sa_payload->payload_interface);
286:
287: /* pregenerate message to store SA payload */
288: if (this->ike_sa->generate_message(this->ike_sa, message,
289: &packet) != SUCCESS)
290: {
291: DBG1(DBG_IKE, "pregenerating SA payload failed");
292: return FAILED;
293: }
294: packet->destroy(packet);
295: if (!this->ph1->save_sa_payload(this->ph1, message))
296: {
297: return FAILED;
298: }
299:
300: this->state = MM_SA;
301: return NEED_MORE;
302: }
303: case MM_SA:
304: {
305: uint16_t group;
306:
307: if (!this->ph1->create_hasher(this->ph1))
308: {
309: return send_notify(this, NO_PROPOSAL_CHOSEN);
310: }
311: if (!this->proposal->get_algorithm(this->proposal,
312: DIFFIE_HELLMAN_GROUP, &group, NULL))
313: {
314: DBG1(DBG_IKE, "DH group selection failed");
315: return send_notify(this, NO_PROPOSAL_CHOSEN);
316: }
317: if (!this->ph1->create_dh(this->ph1, group))
318: {
319: DBG1(DBG_IKE, "negotiated DH group not supported");
320: return send_notify(this, INVALID_KEY_INFORMATION);
321: }
322: if (!this->ph1->add_nonce_ke(this->ph1, message))
323: {
324: return send_notify(this, INVALID_KEY_INFORMATION);
325: }
326: this->state = MM_KE;
327: return NEED_MORE;
328: }
329: case MM_KE:
330: {
331: id_payload_t *id_payload;
332: identification_t *id;
333:
334: id = this->ph1->get_id(this->ph1, this->peer_cfg, TRUE);
335: this->ike_sa->set_my_id(this->ike_sa, id->clone(id));
336: id_payload = id_payload_create_from_identification(PLV1_ID, id);
337: message->add_payload(message, &id_payload->payload_interface);
338:
339: if (!this->ph1->build_auth(this->ph1, this->method, message,
340: id_payload->get_encoded(id_payload)))
341: {
342: charon->bus->alert(charon->bus, ALERT_LOCAL_AUTH_FAILED);
343: return send_notify(this, AUTHENTICATION_FAILED);
344: }
345:
346: add_initial_contact(this, message, id);
347:
348: this->state = MM_AUTH;
349: return NEED_MORE;
350: }
351: default:
352: return FAILED;
353: }
354: }
355:
356: METHOD(task_t, process_r, status_t,
357: private_main_mode_t *this, message_t *message)
358: {
359: switch (this->state)
360: {
361: case MM_INIT:
362: {
363: linked_list_t *list;
364: sa_payload_t *sa_payload;
365: proposal_selection_flag_t flags = 0;
366:
367: this->ike_cfg = this->ike_sa->get_ike_cfg(this->ike_sa);
368: DBG0(DBG_IKE, "%H is initiating a Main Mode IKE_SA",
369: message->get_source(message));
370: this->ike_sa->set_state(this->ike_sa, IKE_CONNECTING);
371:
372: this->ike_sa->update_hosts(this->ike_sa,
373: message->get_destination(message),
374: message->get_source(message), TRUE);
375:
376: sa_payload = (sa_payload_t*)message->get_payload(message,
377: PLV1_SECURITY_ASSOCIATION);
378: if (!sa_payload)
379: {
380: DBG1(DBG_IKE, "SA payload missing");
381: return send_notify(this, INVALID_PAYLOAD_TYPE);
382: }
383: if (!this->ph1->save_sa_payload(this->ph1, message))
384: {
385: return send_notify(this, INVALID_PAYLOAD_TYPE);
386: }
387:
388: list = sa_payload->get_proposals(sa_payload);
389: if (!this->ike_sa->supports_extension(this->ike_sa, EXT_STRONGSWAN)
390: && !lib->settings->get_bool(lib->settings,
391: "%s.accept_private_algs", FALSE, lib->ns))
392: {
393: flags |= PROPOSAL_SKIP_PRIVATE;
394: }
395: if (!lib->settings->get_bool(lib->settings,
396: "%s.prefer_configured_proposals", TRUE, lib->ns))
397: {
398: flags |= PROPOSAL_PREFER_SUPPLIED;
399: }
400: this->proposal = this->ike_cfg->select_proposal(this->ike_cfg,
401: list, flags);
402: list->destroy_offset(list, offsetof(proposal_t, destroy));
403: if (!this->proposal)
404: {
405: DBG1(DBG_IKE, "no proposal found");
406: return send_notify(this, NO_PROPOSAL_CHOSEN);
407: }
408: this->ike_sa->set_proposal(this->ike_sa, this->proposal);
409:
410: this->method = sa_payload->get_auth_method(sa_payload);
411: this->lifetime = sa_payload->get_lifetime(sa_payload,
412: this->proposal);
413:
414: this->state = MM_SA;
415: return NEED_MORE;
416: }
417: case MM_SA:
418: {
419: uint16_t group;
420:
421: if (!this->ph1->create_hasher(this->ph1))
422: {
423: return send_notify(this, INVALID_KEY_INFORMATION);
424: }
425: if (!this->proposal->get_algorithm(this->proposal,
426: DIFFIE_HELLMAN_GROUP, &group, NULL))
427: {
428: DBG1(DBG_IKE, "DH group selection failed");
429: return send_notify(this, INVALID_KEY_INFORMATION);
430: }
431: if (!this->ph1->create_dh(this->ph1, group))
432: {
433: DBG1(DBG_IKE, "negotiated DH group not supported");
434: return send_notify(this, INVALID_KEY_INFORMATION);
435: }
436: if (!this->ph1->get_nonce_ke(this->ph1, message))
437: {
438: return send_notify(this, INVALID_PAYLOAD_TYPE);
439: }
440: this->state = MM_KE;
441: return NEED_MORE;
442: }
443: case MM_KE:
444: {
445: id_payload_t *id_payload;
446: identification_t *id;
447:
448: id_payload = (id_payload_t*)message->get_payload(message, PLV1_ID);
449: if (!id_payload)
450: {
451: DBG1(DBG_IKE, "IDii payload missing");
452: charon->bus->alert(charon->bus, ALERT_PEER_AUTH_FAILED);
453: return send_notify(this, INVALID_PAYLOAD_TYPE);
454: }
455: id = id_payload->get_identification(id_payload);
456: this->ike_sa->set_other_id(this->ike_sa, id);
457:
458: while (TRUE)
459: {
460: DESTROY_IF(this->peer_cfg);
461: this->peer_cfg = this->ph1->select_config(this->ph1,
462: this->method, FALSE, id);
463: if (!this->peer_cfg)
464: {
465: charon->bus->alert(charon->bus, ALERT_PEER_AUTH_FAILED);
466: return send_notify(this, AUTHENTICATION_FAILED);
467: }
468: this->ike_sa->set_peer_cfg(this->ike_sa, this->peer_cfg);
469:
470: if (this->ph1->verify_auth(this->ph1, this->method, message,
471: id_payload->get_encoded(id_payload)))
472: {
473: break;
474: }
475: }
476:
477: if (!charon->bus->authorize(charon->bus, FALSE))
478: {
479: DBG1(DBG_IKE, "Main Mode authorization hook forbids IKE_SA, "
480: "cancelling");
481: charon->bus->alert(charon->bus, ALERT_PEER_AUTH_FAILED);
482: return send_notify(this, AUTHENTICATION_FAILED);
483: }
484:
485: this->state = MM_AUTH;
486: if (has_notify_errors(this, message))
487: {
488: return FAILED;
489: }
490: return NEED_MORE;
491: }
492: default:
493: return FAILED;
494: }
495: }
496:
497: METHOD(task_t, build_r, status_t,
498: private_main_mode_t *this, message_t *message)
499: {
500: switch (this->state)
501: {
502: case MM_SA:
503: {
504: sa_payload_t *sa_payload;
505:
506: sa_payload = sa_payload_create_from_proposal_v1(this->proposal,
507: this->lifetime, 0, this->method, MODE_NONE,
508: ENCAP_NONE, 0);
509: message->add_payload(message, &sa_payload->payload_interface);
510:
511: return NEED_MORE;
512: }
513: case MM_KE:
514: {
515: if (!this->ph1->add_nonce_ke(this->ph1, message))
516: {
517: return send_notify(this, INVALID_KEY_INFORMATION);
518: }
519: if (!this->ph1->derive_keys(this->ph1, this->peer_cfg, this->method))
520: {
521: return send_notify(this, INVALID_KEY_INFORMATION);
522: }
523: return NEED_MORE;
524: }
525: case MM_AUTH:
526: {
527: id_payload_t *id_payload;
528: identification_t *id;
529: adopt_children_job_t *job = NULL;
530: xauth_t *xauth = NULL;
531:
532: id = this->ph1->get_id(this->ph1, this->peer_cfg, TRUE);
533: this->ike_sa->set_my_id(this->ike_sa, id->clone(id));
534:
535: id_payload = id_payload_create_from_identification(PLV1_ID, id);
536: message->add_payload(message, &id_payload->payload_interface);
537:
538: if (!this->ph1->build_auth(this->ph1, this->method, message,
539: id_payload->get_encoded(id_payload)))
540: {
541: charon->bus->alert(charon->bus, ALERT_LOCAL_AUTH_FAILED);
542: return send_notify(this, AUTHENTICATION_FAILED);
543: }
544:
545: switch (this->method)
546: {
547: case AUTH_XAUTH_INIT_PSK:
548: case AUTH_XAUTH_INIT_RSA:
549: case AUTH_HYBRID_INIT_RSA:
550: xauth = xauth_create(this->ike_sa, TRUE);
551: this->ike_sa->queue_task(this->ike_sa, (task_t*)xauth);
552: break;
553: case AUTH_XAUTH_RESP_PSK:
554: case AUTH_XAUTH_RESP_RSA:
555: case AUTH_HYBRID_RESP_RSA:
556: /* wait for XAUTH request */
557: break;
558: default:
559: if (charon->ike_sa_manager->check_uniqueness(
560: charon->ike_sa_manager, this->ike_sa, FALSE))
561: {
562: DBG1(DBG_IKE, "cancelling Main Mode due to uniqueness "
563: "policy");
564: return send_notify(this, AUTHENTICATION_FAILED);
565: }
566: if (!establish(this))
567: {
568: charon->bus->alert(charon->bus, ALERT_PEER_AUTH_FAILED);
569: return send_notify(this, AUTHENTICATION_FAILED);
570: }
571: job = adopt_children_job_create(
572: this->ike_sa->get_id(this->ike_sa));
573: break;
574: }
575: if (this->ph1->has_virtual_ip(this->ph1, this->peer_cfg))
576: {
577: if (this->peer_cfg->use_pull_mode(this->peer_cfg))
578: {
579: this->ike_sa->queue_task(this->ike_sa,
580: (task_t*)mode_config_create(this->ike_sa, TRUE, TRUE));
581: }
582: }
583: else if (this->ph1->has_pool(this->ph1, this->peer_cfg))
584: {
585: if (!this->peer_cfg->use_pull_mode(this->peer_cfg))
586: {
587: if (job)
588: {
589: job->queue_task(job, (task_t*)
590: mode_config_create(this->ike_sa, TRUE, FALSE));
591: }
592: else if (xauth)
593: {
594: xauth->queue_mode_config_push(xauth);
595: }
596: else
597: {
598: this->ike_sa->queue_task(this->ike_sa, (task_t*)
599: mode_config_create(this->ike_sa, TRUE, FALSE));
600: }
601: }
602: }
603: if (job)
604: {
605: lib->processor->queue_job(lib->processor, (job_t*)job);
606: }
607: return SUCCESS;
608: }
609: default:
610: return FAILED;
611: }
612: }
613:
614: /**
615: * Schedule a timeout for the IKE_SA should it not establish
616: */
617: static void schedule_timeout(ike_sa_t *ike_sa)
618: {
619: job_t *job;
620:
621: job = (job_t*)delete_ike_sa_job_create(ike_sa->get_id(ike_sa), FALSE);
622: lib->scheduler->schedule_job(lib->scheduler, job, HALF_OPEN_IKE_SA_TIMEOUT);
623: }
624:
625: METHOD(task_t, process_i, status_t,
626: private_main_mode_t *this, message_t *message)
627: {
628: switch (this->state)
629: {
630: case MM_SA:
631: {
632: linked_list_t *list;
633: sa_payload_t *sa_payload;
634: auth_method_t method;
635: proposal_selection_flag_t flags = 0;
636: uint32_t lifetime;
637:
638: sa_payload = (sa_payload_t*)message->get_payload(message,
639: PLV1_SECURITY_ASSOCIATION);
640: if (!sa_payload)
641: {
642: DBG1(DBG_IKE, "SA payload missing");
643: return send_notify(this, INVALID_PAYLOAD_TYPE);
644: }
645: list = sa_payload->get_proposals(sa_payload);
646: if (!this->ike_sa->supports_extension(this->ike_sa, EXT_STRONGSWAN)
647: && !lib->settings->get_bool(lib->settings,
648: "%s.accept_private_algs", FALSE, lib->ns))
649: {
650: flags |= PROPOSAL_SKIP_PRIVATE;
651: }
652: this->proposal = this->ike_cfg->select_proposal(this->ike_cfg,
653: list, flags);
654: list->destroy_offset(list, offsetof(proposal_t, destroy));
655: if (!this->proposal)
656: {
657: DBG1(DBG_IKE, "no proposal found");
658: return send_notify(this, NO_PROPOSAL_CHOSEN);
659: }
660: this->ike_sa->set_proposal(this->ike_sa, this->proposal);
661:
662: lifetime = sa_payload->get_lifetime(sa_payload, this->proposal);
663: if (lifetime != this->lifetime)
664: {
665: DBG1(DBG_IKE, "received lifetime %us does not match configured "
666: "lifetime %us", lifetime, this->lifetime);
667: }
668: this->lifetime = lifetime;
669: method = sa_payload->get_auth_method(sa_payload);
670: if (method != this->method)
671: {
672: DBG1(DBG_IKE, "received %N authentication, but configured %N, "
673: "continue with configured", auth_method_names, method,
674: auth_method_names, this->method);
675: }
676: return NEED_MORE;
677: }
678: case MM_KE:
679: {
680: if (!this->ph1->get_nonce_ke(this->ph1, message))
681: {
682: return send_notify(this, INVALID_PAYLOAD_TYPE);
683: }
684: if (!this->ph1->derive_keys(this->ph1, this->peer_cfg, this->method))
685: {
686: return send_notify(this, INVALID_KEY_INFORMATION);
687: }
688: return NEED_MORE;
689: }
690: case MM_AUTH:
691: {
692: id_payload_t *id_payload;
693: identification_t *id, *cid;
694:
695: id_payload = (id_payload_t*)message->get_payload(message, PLV1_ID);
696: if (!id_payload)
697: {
698: DBG1(DBG_IKE, "IDir payload missing");
699: charon->bus->alert(charon->bus, ALERT_PEER_AUTH_FAILED);
700: return send_delete(this);
701: }
702: id = id_payload->get_identification(id_payload);
703: cid = this->ph1->get_id(this->ph1, this->peer_cfg, FALSE);
704: if (cid && !id->matches(id, cid))
705: {
706: DBG1(DBG_IKE, "IDir '%Y' does not match to '%Y'", id, cid);
707: id->destroy(id);
708: charon->bus->alert(charon->bus, ALERT_PEER_AUTH_FAILED);
709: return send_delete(this);
710: }
711: this->ike_sa->set_other_id(this->ike_sa, id);
712:
713: if (!this->ph1->verify_auth(this->ph1, this->method, message,
714: id_payload->get_encoded(id_payload)))
715: {
716: charon->bus->alert(charon->bus, ALERT_PEER_AUTH_FAILED);
717: return send_delete(this);
718: }
719: if (!charon->bus->authorize(charon->bus, FALSE))
720: {
721: DBG1(DBG_IKE, "Main Mode authorization hook forbids IKE_SA, "
722: "cancelling");
723: charon->bus->alert(charon->bus, ALERT_PEER_AUTH_FAILED);
724: return send_delete(this);
725: }
726:
727: switch (this->method)
728: {
729: case AUTH_XAUTH_INIT_PSK:
730: case AUTH_XAUTH_INIT_RSA:
731: case AUTH_HYBRID_INIT_RSA:
732: /* wait for XAUTH request */
733: schedule_timeout(this->ike_sa);
734: break;
735: case AUTH_XAUTH_RESP_PSK:
736: case AUTH_XAUTH_RESP_RSA:
737: case AUTH_HYBRID_RESP_RSA:
738: this->ike_sa->queue_task(this->ike_sa,
739: (task_t*)xauth_create(this->ike_sa, TRUE));
740: break;
741: default:
742: if (charon->ike_sa_manager->check_uniqueness(
743: charon->ike_sa_manager, this->ike_sa, FALSE))
744: {
745: DBG1(DBG_IKE, "cancelling Main Mode due to uniqueness "
746: "policy");
747: return send_delete(this);
748: }
749: if (!establish(this))
750: {
751: charon->bus->alert(charon->bus, ALERT_PEER_AUTH_FAILED);
752: return send_delete(this);
753: }
754: break;
755: }
756: /* check for and prepare mode config push/pull */
757: if (this->ph1->has_virtual_ip(this->ph1, this->peer_cfg))
758: {
759: if (this->peer_cfg->use_pull_mode(this->peer_cfg))
760: {
761: this->ike_sa->queue_task(this->ike_sa,
762: (task_t*)mode_config_create(this->ike_sa, TRUE, TRUE));
763: }
764: else
765: {
766: schedule_timeout(this->ike_sa);
767: }
768: }
769: else if (this->ph1->has_pool(this->ph1, this->peer_cfg))
770: {
771: if (this->peer_cfg->use_pull_mode(this->peer_cfg))
772: {
773: schedule_timeout(this->ike_sa);
774: }
775: else
776: {
777: this->ike_sa->queue_task(this->ike_sa,
778: (task_t*)mode_config_create(this->ike_sa, TRUE, FALSE));
779: }
780: }
781: return SUCCESS;
782: }
783: default:
784: return FAILED;
785: }
786: }
787:
788: METHOD(task_t, get_type, task_type_t,
789: private_main_mode_t *this)
790: {
791: return TASK_MAIN_MODE;
792: }
793:
794: METHOD(task_t, migrate, void,
795: private_main_mode_t *this, ike_sa_t *ike_sa)
796: {
797: DESTROY_IF(this->peer_cfg);
798: DESTROY_IF(this->proposal);
799: this->ph1->destroy(this->ph1);
800:
801: this->ike_sa = ike_sa;
802: this->state = MM_INIT;
803: this->peer_cfg = NULL;
804: this->proposal = NULL;
805: this->ph1 = phase1_create(ike_sa, this->initiator);
806: }
807:
808: METHOD(task_t, destroy, void,
809: private_main_mode_t *this)
810: {
811: DESTROY_IF(this->peer_cfg);
812: DESTROY_IF(this->proposal);
813: this->ph1->destroy(this->ph1);
814: free(this);
815: }
816:
817: /*
818: * Described in header.
819: */
820: main_mode_t *main_mode_create(ike_sa_t *ike_sa, bool initiator)
821: {
822: private_main_mode_t *this;
823:
824: INIT(this,
825: .public = {
826: .task = {
827: .get_type = _get_type,
828: .migrate = _migrate,
829: .destroy = _destroy,
830: },
831: },
832: .ike_sa = ike_sa,
833: .ph1 = phase1_create(ike_sa, initiator),
834: .initiator = initiator,
835: .state = MM_INIT,
836: );
837:
838: if (initiator)
839: {
840: this->public.task.build = _build_i;
841: this->public.task.process = _process_i;
842: }
843: else
844: {
845: this->public.task.build = _build_r;
846: this->public.task.process = _process_r;
847: }
848:
849: return &this->public;
850: }