1 /*
2 * IEEE 802.1X-2004 Authenticator - EAPOL state machine
3 * Copyright (c) 2002-2015, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "includes.h"
10
11 #include "common.h"
12 #include "eloop.h"
13 #include "state_machine.h"
14 #include "common/eapol_common.h"
15 #include "eap_common/eap_defs.h"
16 #include "eap_common/eap_common.h"
17 #include "eap_server/eap.h"
18 #include "eapol_auth_sm.h"
19 #include "eapol_auth_sm_i.h"
20
21 #define STATE_MACHINE_DATA struct eapol_state_machine
22 #define STATE_MACHINE_DEBUG_PREFIX "IEEE 802.1X"
23 #define STATE_MACHINE_ADDR sm->addr
24
25 static const struct eapol_callbacks eapol_cb;
26
27 /* EAPOL state machines are described in IEEE Std 802.1X-2004, Chap. 8.2 */
28
29 #define setPortAuthorized() \
30 sm->eapol->cb.set_port_authorized(sm->eapol->conf.ctx, sm->sta, 1)
31 #define setPortUnauthorized() \
32 sm->eapol->cb.set_port_authorized(sm->eapol->conf.ctx, sm->sta, 0)
33
34 /* procedures */
35 #define txCannedFail() eapol_auth_tx_canned_eap(sm, 0)
36 #define txCannedSuccess() eapol_auth_tx_canned_eap(sm, 1)
37 #define txReq() eapol_auth_tx_req(sm)
38 #define abortAuth() sm->eapol->cb.abort_auth(sm->eapol->conf.ctx, sm->sta)
39 #define txKey() sm->eapol->cb.tx_key(sm->eapol->conf.ctx, sm->sta)
40 #define processKey() do { } while (0)
41
42
43 static void eapol_sm_step_run(struct eapol_state_machine *sm);
44 static void eapol_sm_step_cb(void *eloop_ctx, void *timeout_ctx);
45 static void eapol_auth_initialize(struct eapol_state_machine *sm);
46 static void eapol_auth_conf_free(struct eapol_auth_config *conf);
47
48
eapol_auth_logger(struct eapol_authenticator * eapol,const u8 * addr,eapol_logger_level level,const char * txt)49 static void eapol_auth_logger(struct eapol_authenticator *eapol,
50 const u8 *addr, eapol_logger_level level,
51 const char *txt)
52 {
53 if (eapol->cb.logger == NULL)
54 return;
55 eapol->cb.logger(eapol->conf.ctx, addr, level, txt);
56 }
57
58
59 PRINTF_FORMAT(4, 5)
eapol_auth_vlogger(struct eapol_authenticator * eapol,const u8 * addr,eapol_logger_level level,const char * fmt,...)60 static void eapol_auth_vlogger(struct eapol_authenticator *eapol,
61 const u8 *addr, eapol_logger_level level,
62 const char *fmt, ...)
63 {
64 char *format;
65 int maxlen;
66 va_list ap;
67
68 if (eapol->cb.logger == NULL)
69 return;
70
71 maxlen = os_strlen(fmt) + 100;
72 format = os_malloc(maxlen);
73 if (!format)
74 return;
75
76 va_start(ap, fmt);
77 vsnprintf(format, maxlen, fmt, ap);
78 va_end(ap);
79
80 eapol_auth_logger(eapol, addr, level, format);
81
82 os_free(format);
83 }
84
85
eapol_auth_tx_canned_eap(struct eapol_state_machine * sm,int success)86 static void eapol_auth_tx_canned_eap(struct eapol_state_machine *sm,
87 int success)
88 {
89 struct eap_hdr eap;
90
91 os_memset(&eap, 0, sizeof(eap));
92
93 eap.code = success ? EAP_CODE_SUCCESS : EAP_CODE_FAILURE;
94 eap.identifier = ++sm->last_eap_id;
95 eap.length = host_to_be16(sizeof(eap));
96
97 eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_DEBUG,
98 "Sending canned EAP packet %s (identifier %d)",
99 success ? "SUCCESS" : "FAILURE", eap.identifier);
100 sm->eapol->cb.eapol_send(sm->eapol->conf.ctx, sm->sta,
101 IEEE802_1X_TYPE_EAP_PACKET,
102 (u8 *) &eap, sizeof(eap));
103 sm->dot1xAuthEapolFramesTx++;
104 }
105
106
eapol_auth_tx_req(struct eapol_state_machine * sm)107 static void eapol_auth_tx_req(struct eapol_state_machine *sm)
108 {
109 if (sm->eap_if->eapReqData == NULL ||
110 wpabuf_len(sm->eap_if->eapReqData) < sizeof(struct eap_hdr)) {
111 eapol_auth_logger(sm->eapol, sm->addr,
112 EAPOL_LOGGER_DEBUG,
113 "TxReq called, but there is no EAP request "
114 "from authentication server");
115 return;
116 }
117
118 if (sm->flags & EAPOL_SM_WAIT_START) {
119 wpa_printf(MSG_DEBUG, "EAPOL: Drop EAPOL TX to " MACSTR
120 " while waiting for EAPOL-Start",
121 MAC2STR(sm->addr));
122 return;
123 }
124
125 sm->last_eap_id = eap_get_id(sm->eap_if->eapReqData);
126 eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_DEBUG,
127 "Sending EAP Packet (identifier %d)",
128 sm->last_eap_id);
129 sm->eapol->cb.eapol_send(sm->eapol->conf.ctx, sm->sta,
130 IEEE802_1X_TYPE_EAP_PACKET,
131 wpabuf_head(sm->eap_if->eapReqData),
132 wpabuf_len(sm->eap_if->eapReqData));
133 sm->dot1xAuthEapolFramesTx++;
134 if (eap_get_type(sm->eap_if->eapReqData) == EAP_TYPE_IDENTITY)
135 sm->dot1xAuthEapolReqIdFramesTx++;
136 else
137 sm->dot1xAuthEapolReqFramesTx++;
138 }
139
140
141 /**
142 * eapol_port_timers_tick - Port Timers state machine
143 * @eloop_ctx: struct eapol_state_machine *
144 * @timeout_ctx: Not used
145 *
146 * This statemachine is implemented as a function that will be called
147 * once a second as a registered event loop timeout.
148 */
eapol_port_timers_tick(void * eloop_ctx,void * timeout_ctx)149 static void eapol_port_timers_tick(void *eloop_ctx, void *timeout_ctx)
150 {
151 struct eapol_state_machine *state = timeout_ctx;
152
153 if (state->aWhile > 0) {
154 state->aWhile--;
155 if (state->aWhile == 0) {
156 wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR
157 " - aWhile --> 0",
158 MAC2STR(state->addr));
159 }
160 }
161
162 if (state->quietWhile > 0) {
163 state->quietWhile--;
164 if (state->quietWhile == 0) {
165 wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR
166 " - quietWhile --> 0",
167 MAC2STR(state->addr));
168 }
169 }
170
171 if (state->reAuthWhen > 0) {
172 state->reAuthWhen--;
173 if (state->reAuthWhen == 0) {
174 wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR
175 " - reAuthWhen --> 0",
176 MAC2STR(state->addr));
177 }
178 }
179
180 if (state->eap_if->retransWhile > 0) {
181 state->eap_if->retransWhile--;
182 if (state->eap_if->retransWhile == 0) {
183 wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR
184 " - (EAP) retransWhile --> 0",
185 MAC2STR(state->addr));
186 }
187 }
188
189 eapol_sm_step_run(state);
190
191 eloop_register_timeout(1, 0, eapol_port_timers_tick, eloop_ctx, state);
192 }
193
194
195
196 /* Authenticator PAE state machine */
197
SM_STATE(AUTH_PAE,INITIALIZE)198 SM_STATE(AUTH_PAE, INITIALIZE)
199 {
200 SM_ENTRY_MA(AUTH_PAE, INITIALIZE, auth_pae);
201 sm->portMode = Auto;
202
203 /*
204 * Clearing keyRun here is not specified in IEEE Std 802.1X-2004, but
205 * it looks like this would be logical thing to do here since the
206 * EAPOL-Key exchange is not possible in this state. It is possible to
207 * get here on disconnection event without advancing to the
208 * AUTHENTICATING state to clear keyRun before the IEEE 802.11 RSN
209 * authenticator state machine runs and that may advance from
210 * AUTHENTICATION2 to INITPMK if keyRun = true has been left from the
211 * last association. This can be avoided by clearing keyRun here.
212 */
213 sm->keyRun = false;
214 }
215
216
SM_STATE(AUTH_PAE,DISCONNECTED)217 SM_STATE(AUTH_PAE, DISCONNECTED)
218 {
219 int from_initialize = sm->auth_pae_state == AUTH_PAE_INITIALIZE;
220 bool pre_auth_logoff = sm->auth_pae_state == AUTH_PAE_ABORTING &&
221 sm->eapolLogoff && !sm->authenticated;
222 bool logoff = sm->eapolLogoff;
223
224 if (sm->eapolLogoff) {
225 if (sm->auth_pae_state == AUTH_PAE_CONNECTING)
226 sm->authEapLogoffsWhileConnecting++;
227 else if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATED)
228 sm->authAuthEapLogoffWhileAuthenticated++;
229 }
230
231 SM_ENTRY_MA(AUTH_PAE, DISCONNECTED, auth_pae);
232
233 sm->authPortStatus = Unauthorized;
234 setPortUnauthorized();
235 sm->reAuthCount = 0;
236 sm->eapolLogoff = false;
237 if (!from_initialize && !pre_auth_logoff) {
238 if (sm->eapol->cb.finished(sm->eapol->conf.ctx, sm->sta, 0,
239 sm->flags & EAPOL_SM_PREAUTH,
240 logoff)) {
241 wpa_printf(MSG_DEBUG,
242 "EAPOL: Do not restart since lower layers will disconnect the port after EAPOL-Logoff");
243 sm->stopped = true;
244 }
245 }
246 }
247
248
SM_STATE(AUTH_PAE,RESTART)249 SM_STATE(AUTH_PAE, RESTART)
250 {
251 if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATED) {
252 if (sm->reAuthenticate)
253 sm->authAuthReauthsWhileAuthenticated++;
254 if (sm->eapolStart)
255 sm->authAuthEapStartsWhileAuthenticated++;
256 if (sm->eapolLogoff)
257 sm->authAuthEapLogoffWhileAuthenticated++;
258 }
259
260 SM_ENTRY_MA(AUTH_PAE, RESTART, auth_pae);
261
262 sm->eap_if->eapRestart = true;
263 }
264
265
SM_STATE(AUTH_PAE,CONNECTING)266 SM_STATE(AUTH_PAE, CONNECTING)
267 {
268 if (sm->auth_pae_state != AUTH_PAE_CONNECTING)
269 sm->authEntersConnecting++;
270
271 SM_ENTRY_MA(AUTH_PAE, CONNECTING, auth_pae);
272
273 sm->reAuthenticate = false;
274 sm->reAuthCount++;
275 }
276
277
SM_STATE(AUTH_PAE,HELD)278 SM_STATE(AUTH_PAE, HELD)
279 {
280 if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATING && sm->authFail)
281 sm->authAuthFailWhileAuthenticating++;
282
283 SM_ENTRY_MA(AUTH_PAE, HELD, auth_pae);
284
285 sm->authPortStatus = Unauthorized;
286 setPortUnauthorized();
287 sm->quietWhile = sm->quietPeriod;
288 sm->eapolLogoff = false;
289
290 eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_WARNING,
291 "authentication failed - EAP type: %d (%s)",
292 sm->eap_type_authsrv,
293 eap_server_get_name(0, sm->eap_type_authsrv));
294 if (sm->eap_type_authsrv != sm->eap_type_supp) {
295 eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_INFO,
296 "Supplicant used different EAP type: "
297 "%d (%s)", sm->eap_type_supp,
298 eap_server_get_name(0, sm->eap_type_supp));
299 }
300 sm->eapol->cb.finished(sm->eapol->conf.ctx, sm->sta, 0,
301 sm->flags & EAPOL_SM_PREAUTH, false);
302 }
303
304
SM_STATE(AUTH_PAE,AUTHENTICATED)305 SM_STATE(AUTH_PAE, AUTHENTICATED)
306 {
307 char *extra = "";
308
309 if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATING && sm->authSuccess)
310 sm->authAuthSuccessesWhileAuthenticating++;
311
312 SM_ENTRY_MA(AUTH_PAE, AUTHENTICATED, auth_pae);
313
314 sm->authPortStatus = Authorized;
315 setPortAuthorized();
316 sm->reAuthCount = 0;
317 if (sm->flags & EAPOL_SM_PREAUTH)
318 extra = " (pre-authentication)";
319 else if (sm->flags & EAPOL_SM_FROM_PMKSA_CACHE)
320 extra = " (PMKSA cache)";
321 eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_INFO,
322 "authenticated - EAP type: %d (%s)%s",
323 sm->eap_type_authsrv,
324 eap_server_get_name(0, sm->eap_type_authsrv),
325 extra);
326 if (sm->authSuccess)
327 sm->authenticated++;
328 sm->eapol->cb.finished(sm->eapol->conf.ctx, sm->sta, 1,
329 sm->flags & EAPOL_SM_PREAUTH, false);
330 }
331
332
SM_STATE(AUTH_PAE,AUTHENTICATING)333 SM_STATE(AUTH_PAE, AUTHENTICATING)
334 {
335 SM_ENTRY_MA(AUTH_PAE, AUTHENTICATING, auth_pae);
336
337 sm->eapolStart = false;
338 sm->authSuccess = false;
339 sm->authFail = false;
340 sm->authTimeout = false;
341 sm->authStart = true;
342 sm->keyRun = false;
343 sm->keyDone = false;
344 }
345
346
SM_STATE(AUTH_PAE,ABORTING)347 SM_STATE(AUTH_PAE, ABORTING)
348 {
349 if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATING) {
350 if (sm->authTimeout)
351 sm->authAuthTimeoutsWhileAuthenticating++;
352 if (sm->eapolStart)
353 sm->authAuthEapStartsWhileAuthenticating++;
354 if (sm->eapolLogoff)
355 sm->authAuthEapLogoffWhileAuthenticating++;
356 }
357
358 SM_ENTRY_MA(AUTH_PAE, ABORTING, auth_pae);
359
360 sm->authAbort = true;
361 sm->keyRun = false;
362 sm->keyDone = false;
363 }
364
365
SM_STATE(AUTH_PAE,FORCE_AUTH)366 SM_STATE(AUTH_PAE, FORCE_AUTH)
367 {
368 SM_ENTRY_MA(AUTH_PAE, FORCE_AUTH, auth_pae);
369
370 sm->authPortStatus = Authorized;
371 setPortAuthorized();
372 sm->portMode = ForceAuthorized;
373 sm->eapolStart = false;
374 txCannedSuccess();
375 }
376
377
SM_STATE(AUTH_PAE,FORCE_UNAUTH)378 SM_STATE(AUTH_PAE, FORCE_UNAUTH)
379 {
380 SM_ENTRY_MA(AUTH_PAE, FORCE_UNAUTH, auth_pae);
381
382 sm->authPortStatus = Unauthorized;
383 setPortUnauthorized();
384 sm->portMode = ForceUnauthorized;
385 sm->eapolStart = false;
386 txCannedFail();
387 }
388
389
SM_STEP(AUTH_PAE)390 SM_STEP(AUTH_PAE)
391 {
392 if ((sm->portControl == Auto && sm->portMode != sm->portControl) ||
393 sm->initialize || !sm->eap_if->portEnabled)
394 SM_ENTER_GLOBAL(AUTH_PAE, INITIALIZE);
395 else if (sm->portControl == ForceAuthorized &&
396 sm->portMode != sm->portControl &&
397 !(sm->initialize || !sm->eap_if->portEnabled))
398 SM_ENTER_GLOBAL(AUTH_PAE, FORCE_AUTH);
399 else if (sm->portControl == ForceUnauthorized &&
400 sm->portMode != sm->portControl &&
401 !(sm->initialize || !sm->eap_if->portEnabled))
402 SM_ENTER_GLOBAL(AUTH_PAE, FORCE_UNAUTH);
403 else {
404 switch (sm->auth_pae_state) {
405 case AUTH_PAE_INITIALIZE:
406 SM_ENTER(AUTH_PAE, DISCONNECTED);
407 break;
408 case AUTH_PAE_DISCONNECTED:
409 if (!sm->stopped)
410 SM_ENTER(AUTH_PAE, RESTART);
411 break;
412 case AUTH_PAE_RESTART:
413 if (!sm->eap_if->eapRestart)
414 SM_ENTER(AUTH_PAE, CONNECTING);
415 break;
416 case AUTH_PAE_HELD:
417 if (sm->quietWhile == 0)
418 SM_ENTER(AUTH_PAE, RESTART);
419 break;
420 case AUTH_PAE_CONNECTING:
421 if (sm->eapolLogoff || sm->reAuthCount > sm->reAuthMax)
422 SM_ENTER(AUTH_PAE, DISCONNECTED);
423 else if ((sm->eap_if->eapReq &&
424 sm->reAuthCount <= sm->reAuthMax) ||
425 sm->eap_if->eapSuccess || sm->eap_if->eapFail)
426 SM_ENTER(AUTH_PAE, AUTHENTICATING);
427 break;
428 case AUTH_PAE_AUTHENTICATED:
429 if (sm->eapolStart || sm->reAuthenticate)
430 SM_ENTER(AUTH_PAE, RESTART);
431 else if (sm->eapolLogoff || !sm->portValid)
432 SM_ENTER(AUTH_PAE, DISCONNECTED);
433 break;
434 case AUTH_PAE_AUTHENTICATING:
435 if (sm->authSuccess && sm->portValid)
436 SM_ENTER(AUTH_PAE, AUTHENTICATED);
437 else if (sm->authFail ||
438 (sm->keyDone && !sm->portValid))
439 SM_ENTER(AUTH_PAE, HELD);
440 else if (sm->eapolStart || sm->eapolLogoff ||
441 sm->authTimeout)
442 SM_ENTER(AUTH_PAE, ABORTING);
443 break;
444 case AUTH_PAE_ABORTING:
445 if (sm->eapolLogoff && !sm->authAbort)
446 SM_ENTER(AUTH_PAE, DISCONNECTED);
447 else if (!sm->eapolLogoff && !sm->authAbort)
448 SM_ENTER(AUTH_PAE, RESTART);
449 break;
450 case AUTH_PAE_FORCE_AUTH:
451 if (sm->eapolStart)
452 SM_ENTER(AUTH_PAE, FORCE_AUTH);
453 break;
454 case AUTH_PAE_FORCE_UNAUTH:
455 if (sm->eapolStart)
456 SM_ENTER(AUTH_PAE, FORCE_UNAUTH);
457 break;
458 }
459 }
460 }
461
462
463
464 /* Backend Authentication state machine */
465
SM_STATE(BE_AUTH,INITIALIZE)466 SM_STATE(BE_AUTH, INITIALIZE)
467 {
468 SM_ENTRY_MA(BE_AUTH, INITIALIZE, be_auth);
469
470 abortAuth();
471 sm->eap_if->eapNoReq = false;
472 sm->authAbort = false;
473 }
474
475
SM_STATE(BE_AUTH,REQUEST)476 SM_STATE(BE_AUTH, REQUEST)
477 {
478 SM_ENTRY_MA(BE_AUTH, REQUEST, be_auth);
479
480 txReq();
481 sm->eap_if->eapReq = false;
482 sm->backendOtherRequestsToSupplicant++;
483
484 /*
485 * Clearing eapolEap here is not specified in IEEE Std 802.1X-2004, but
486 * it looks like this would be logical thing to do there since the old
487 * EAP response would not be valid anymore after the new EAP request
488 * was sent out.
489 *
490 * A race condition has been reported, in which hostapd ended up
491 * sending out EAP-Response/Identity as a response to the first
492 * EAP-Request from the main EAP method. This can be avoided by
493 * clearing eapolEap here.
494 */
495 sm->eapolEap = false;
496 }
497
498
SM_STATE(BE_AUTH,RESPONSE)499 SM_STATE(BE_AUTH, RESPONSE)
500 {
501 SM_ENTRY_MA(BE_AUTH, RESPONSE, be_auth);
502
503 sm->authTimeout = false;
504 sm->eapolEap = false;
505 sm->eap_if->eapNoReq = false;
506 sm->aWhile = sm->serverTimeout;
507 sm->eap_if->eapResp = true;
508 /* sendRespToServer(); */
509 sm->backendResponses++;
510 }
511
512
SM_STATE(BE_AUTH,SUCCESS)513 SM_STATE(BE_AUTH, SUCCESS)
514 {
515 SM_ENTRY_MA(BE_AUTH, SUCCESS, be_auth);
516
517 txReq();
518 sm->authSuccess = true;
519 sm->keyRun = true;
520 }
521
522
SM_STATE(BE_AUTH,FAIL)523 SM_STATE(BE_AUTH, FAIL)
524 {
525 SM_ENTRY_MA(BE_AUTH, FAIL, be_auth);
526
527 txReq();
528 sm->authFail = true;
529 }
530
531
SM_STATE(BE_AUTH,TIMEOUT)532 SM_STATE(BE_AUTH, TIMEOUT)
533 {
534 SM_ENTRY_MA(BE_AUTH, TIMEOUT, be_auth);
535
536 sm->authTimeout = true;
537 }
538
539
SM_STATE(BE_AUTH,IDLE)540 SM_STATE(BE_AUTH, IDLE)
541 {
542 SM_ENTRY_MA(BE_AUTH, IDLE, be_auth);
543
544 sm->authStart = false;
545 }
546
547
SM_STATE(BE_AUTH,IGNORE)548 SM_STATE(BE_AUTH, IGNORE)
549 {
550 SM_ENTRY_MA(BE_AUTH, IGNORE, be_auth);
551
552 sm->eap_if->eapNoReq = false;
553 }
554
555
SM_STEP(BE_AUTH)556 SM_STEP(BE_AUTH)
557 {
558 if (sm->portControl != Auto || sm->initialize || sm->authAbort) {
559 SM_ENTER_GLOBAL(BE_AUTH, INITIALIZE);
560 return;
561 }
562
563 switch (sm->be_auth_state) {
564 case BE_AUTH_INITIALIZE:
565 SM_ENTER(BE_AUTH, IDLE);
566 break;
567 case BE_AUTH_REQUEST:
568 if (sm->eapolEap)
569 SM_ENTER(BE_AUTH, RESPONSE);
570 else if (sm->eap_if->eapReq)
571 SM_ENTER(BE_AUTH, REQUEST);
572 else if (sm->eap_if->eapTimeout)
573 SM_ENTER(BE_AUTH, TIMEOUT);
574 break;
575 case BE_AUTH_RESPONSE:
576 if (sm->eap_if->eapNoReq)
577 SM_ENTER(BE_AUTH, IGNORE);
578 if (sm->eap_if->eapReq) {
579 sm->backendAccessChallenges++;
580 SM_ENTER(BE_AUTH, REQUEST);
581 } else if (sm->aWhile == 0)
582 SM_ENTER(BE_AUTH, TIMEOUT);
583 else if (sm->eap_if->eapFail) {
584 sm->backendAuthFails++;
585 SM_ENTER(BE_AUTH, FAIL);
586 } else if (sm->eap_if->eapSuccess) {
587 sm->backendAuthSuccesses++;
588 SM_ENTER(BE_AUTH, SUCCESS);
589 }
590 break;
591 case BE_AUTH_SUCCESS:
592 SM_ENTER(BE_AUTH, IDLE);
593 break;
594 case BE_AUTH_FAIL:
595 SM_ENTER(BE_AUTH, IDLE);
596 break;
597 case BE_AUTH_TIMEOUT:
598 SM_ENTER(BE_AUTH, IDLE);
599 break;
600 case BE_AUTH_IDLE:
601 if (sm->eap_if->eapFail && sm->authStart)
602 SM_ENTER(BE_AUTH, FAIL);
603 else if (sm->eap_if->eapReq && sm->authStart)
604 SM_ENTER(BE_AUTH, REQUEST);
605 else if (sm->eap_if->eapSuccess && sm->authStart)
606 SM_ENTER(BE_AUTH, SUCCESS);
607 break;
608 case BE_AUTH_IGNORE:
609 if (sm->eapolEap)
610 SM_ENTER(BE_AUTH, RESPONSE);
611 else if (sm->eap_if->eapReq)
612 SM_ENTER(BE_AUTH, REQUEST);
613 else if (sm->eap_if->eapTimeout)
614 SM_ENTER(BE_AUTH, TIMEOUT);
615 break;
616 }
617 }
618
619
620
621 /* Reauthentication Timer state machine */
622
SM_STATE(REAUTH_TIMER,INITIALIZE)623 SM_STATE(REAUTH_TIMER, INITIALIZE)
624 {
625 SM_ENTRY_MA(REAUTH_TIMER, INITIALIZE, reauth_timer);
626
627 sm->reAuthWhen = sm->reAuthPeriod;
628 }
629
630
SM_STATE(REAUTH_TIMER,REAUTHENTICATE)631 SM_STATE(REAUTH_TIMER, REAUTHENTICATE)
632 {
633 SM_ENTRY_MA(REAUTH_TIMER, REAUTHENTICATE, reauth_timer);
634
635 sm->reAuthenticate = true;
636 sm->eapol->cb.eapol_event(sm->eapol->conf.ctx, sm->sta,
637 EAPOL_AUTH_REAUTHENTICATE);
638 }
639
640
SM_STEP(REAUTH_TIMER)641 SM_STEP(REAUTH_TIMER)
642 {
643 if (sm->portControl != Auto || sm->initialize ||
644 sm->authPortStatus == Unauthorized || !sm->reAuthEnabled) {
645 SM_ENTER_GLOBAL(REAUTH_TIMER, INITIALIZE);
646 return;
647 }
648
649 switch (sm->reauth_timer_state) {
650 case REAUTH_TIMER_INITIALIZE:
651 if (sm->reAuthWhen == 0)
652 SM_ENTER(REAUTH_TIMER, REAUTHENTICATE);
653 break;
654 case REAUTH_TIMER_REAUTHENTICATE:
655 SM_ENTER(REAUTH_TIMER, INITIALIZE);
656 break;
657 }
658 }
659
660
661
662 #ifdef CONFIG_WEP
663
664 /* Authenticator Key Transmit state machine */
665
SM_STATE(AUTH_KEY_TX,NO_KEY_TRANSMIT)666 SM_STATE(AUTH_KEY_TX, NO_KEY_TRANSMIT)
667 {
668 SM_ENTRY_MA(AUTH_KEY_TX, NO_KEY_TRANSMIT, auth_key_tx);
669 }
670
671
SM_STATE(AUTH_KEY_TX,KEY_TRANSMIT)672 SM_STATE(AUTH_KEY_TX, KEY_TRANSMIT)
673 {
674 SM_ENTRY_MA(AUTH_KEY_TX, KEY_TRANSMIT, auth_key_tx);
675
676 txKey();
677 sm->eap_if->eapKeyAvailable = false;
678 sm->keyDone = true;
679 }
680
681
SM_STEP(AUTH_KEY_TX)682 SM_STEP(AUTH_KEY_TX)
683 {
684 if (sm->initialize || sm->portControl != Auto) {
685 SM_ENTER_GLOBAL(AUTH_KEY_TX, NO_KEY_TRANSMIT);
686 return;
687 }
688
689 switch (sm->auth_key_tx_state) {
690 case AUTH_KEY_TX_NO_KEY_TRANSMIT:
691 if (sm->keyTxEnabled && sm->eap_if->eapKeyAvailable &&
692 sm->keyRun && !(sm->flags & EAPOL_SM_USES_WPA))
693 SM_ENTER(AUTH_KEY_TX, KEY_TRANSMIT);
694 break;
695 case AUTH_KEY_TX_KEY_TRANSMIT:
696 if (!sm->keyTxEnabled || !sm->keyRun)
697 SM_ENTER(AUTH_KEY_TX, NO_KEY_TRANSMIT);
698 else if (sm->eap_if->eapKeyAvailable)
699 SM_ENTER(AUTH_KEY_TX, KEY_TRANSMIT);
700 break;
701 }
702 }
703
704
705
706 /* Key Receive state machine */
707
SM_STATE(KEY_RX,NO_KEY_RECEIVE)708 SM_STATE(KEY_RX, NO_KEY_RECEIVE)
709 {
710 SM_ENTRY_MA(KEY_RX, NO_KEY_RECEIVE, key_rx);
711 }
712
713
SM_STATE(KEY_RX,KEY_RECEIVE)714 SM_STATE(KEY_RX, KEY_RECEIVE)
715 {
716 SM_ENTRY_MA(KEY_RX, KEY_RECEIVE, key_rx);
717
718 processKey();
719 sm->rxKey = false;
720 }
721
722
SM_STEP(KEY_RX)723 SM_STEP(KEY_RX)
724 {
725 if (sm->initialize || !sm->eap_if->portEnabled) {
726 SM_ENTER_GLOBAL(KEY_RX, NO_KEY_RECEIVE);
727 return;
728 }
729
730 switch (sm->key_rx_state) {
731 case KEY_RX_NO_KEY_RECEIVE:
732 if (sm->rxKey)
733 SM_ENTER(KEY_RX, KEY_RECEIVE);
734 break;
735 case KEY_RX_KEY_RECEIVE:
736 if (sm->rxKey)
737 SM_ENTER(KEY_RX, KEY_RECEIVE);
738 break;
739 }
740 }
741
742 #endif /* CONFIG_WEP */
743
744
745
746 /* Controlled Directions state machine */
747
SM_STATE(CTRL_DIR,FORCE_BOTH)748 SM_STATE(CTRL_DIR, FORCE_BOTH)
749 {
750 SM_ENTRY_MA(CTRL_DIR, FORCE_BOTH, ctrl_dir);
751 sm->operControlledDirections = Both;
752 }
753
754
SM_STATE(CTRL_DIR,IN_OR_BOTH)755 SM_STATE(CTRL_DIR, IN_OR_BOTH)
756 {
757 SM_ENTRY_MA(CTRL_DIR, IN_OR_BOTH, ctrl_dir);
758 sm->operControlledDirections = sm->adminControlledDirections;
759 }
760
761
SM_STEP(CTRL_DIR)762 SM_STEP(CTRL_DIR)
763 {
764 if (sm->initialize) {
765 SM_ENTER_GLOBAL(CTRL_DIR, IN_OR_BOTH);
766 return;
767 }
768
769 switch (sm->ctrl_dir_state) {
770 case CTRL_DIR_FORCE_BOTH:
771 if (sm->eap_if->portEnabled && sm->operEdge)
772 SM_ENTER(CTRL_DIR, IN_OR_BOTH);
773 break;
774 case CTRL_DIR_IN_OR_BOTH:
775 if (sm->operControlledDirections !=
776 sm->adminControlledDirections)
777 SM_ENTER(CTRL_DIR, IN_OR_BOTH);
778 if (!sm->eap_if->portEnabled || !sm->operEdge)
779 SM_ENTER(CTRL_DIR, FORCE_BOTH);
780 break;
781 }
782 }
783
784
785
786 struct eapol_state_machine *
eapol_auth_alloc(struct eapol_authenticator * eapol,const u8 * addr,int flags,const struct wpabuf * assoc_wps_ie,const struct wpabuf * assoc_p2p_ie,void * sta_ctx,const char * identity,const char * radius_cui)787 eapol_auth_alloc(struct eapol_authenticator *eapol, const u8 *addr,
788 int flags, const struct wpabuf *assoc_wps_ie,
789 const struct wpabuf *assoc_p2p_ie, void *sta_ctx,
790 const char *identity, const char *radius_cui)
791 {
792 struct eapol_state_machine *sm;
793 struct eap_session_data eap_sess;
794
795 if (eapol == NULL)
796 return NULL;
797
798 sm = os_zalloc(sizeof(*sm));
799 if (sm == NULL) {
800 wpa_printf(MSG_DEBUG, "IEEE 802.1X state machine allocation "
801 "failed");
802 return NULL;
803 }
804 sm->radius_identifier = -1;
805 os_memcpy(sm->addr, addr, ETH_ALEN);
806 sm->flags = flags;
807
808 sm->eapol = eapol;
809 sm->sta = sta_ctx;
810
811 /* Set default values for state machine constants */
812 sm->auth_pae_state = AUTH_PAE_INITIALIZE;
813 sm->quietPeriod = AUTH_PAE_DEFAULT_quietPeriod;
814 sm->reAuthMax = AUTH_PAE_DEFAULT_reAuthMax;
815
816 sm->be_auth_state = BE_AUTH_INITIALIZE;
817 sm->serverTimeout = BE_AUTH_DEFAULT_serverTimeout;
818
819 sm->reauth_timer_state = REAUTH_TIMER_INITIALIZE;
820 sm->reAuthPeriod = eapol->conf.eap_reauth_period;
821 sm->reAuthEnabled = eapol->conf.eap_reauth_period > 0;
822
823 sm->auth_key_tx_state = AUTH_KEY_TX_NO_KEY_TRANSMIT;
824
825 sm->key_rx_state = KEY_RX_NO_KEY_RECEIVE;
826
827 sm->ctrl_dir_state = CTRL_DIR_IN_OR_BOTH;
828
829 sm->portControl = Auto;
830
831 #ifdef CONFIG_WEP
832 if (!eapol->conf.wpa &&
833 (eapol->default_wep_key || eapol->conf.individual_wep_key_len > 0))
834 sm->keyTxEnabled = true;
835 else
836 #endif /* CONFIG_WEP */
837 sm->keyTxEnabled = false;
838 if (eapol->conf.wpa)
839 sm->portValid = false;
840 else
841 sm->portValid = true;
842
843 os_memset(&eap_sess, 0, sizeof(eap_sess));
844 eap_sess.assoc_wps_ie = assoc_wps_ie;
845 eap_sess.assoc_p2p_ie = assoc_p2p_ie;
846 eap_sess.peer_addr = addr;
847 sm->eap = eap_server_sm_init(sm, &eapol_cb, eapol->conf.eap_cfg,
848 &eap_sess);
849 if (sm->eap == NULL) {
850 eapol_auth_free(sm);
851 return NULL;
852 }
853 sm->eap_if = eap_get_interface(sm->eap);
854
855 eapol_auth_initialize(sm);
856
857 if (identity) {
858 sm->identity = (u8 *) os_strdup(identity);
859 if (sm->identity)
860 sm->identity_len = os_strlen(identity);
861 }
862 if (radius_cui)
863 sm->radius_cui = wpabuf_alloc_copy(radius_cui,
864 os_strlen(radius_cui));
865
866 #ifndef CONFIG_NO_RADIUS
867 if (radius_gen_session_id((u8 *) &sm->acct_multi_session_id,
868 sizeof(sm->acct_multi_session_id)) < 0) {
869 eapol_auth_free(sm);
870 return NULL;
871 }
872 #endif /* CONFIG_NO_RADIUS */
873
874 return sm;
875 }
876
877
eapol_auth_free(struct eapol_state_machine * sm)878 void eapol_auth_free(struct eapol_state_machine *sm)
879 {
880 if (sm == NULL)
881 return;
882
883 eloop_cancel_timeout(eapol_port_timers_tick, NULL, sm);
884 eloop_cancel_timeout(eapol_sm_step_cb, sm, NULL);
885 if (sm->eap)
886 eap_server_sm_deinit(sm->eap);
887
888 wpabuf_free(sm->radius_cui);
889 os_free(sm->identity);
890 os_free(sm);
891 }
892
893
eapol_sm_sta_entry_alive(struct eapol_authenticator * eapol,const u8 * addr)894 static int eapol_sm_sta_entry_alive(struct eapol_authenticator *eapol,
895 const u8 *addr)
896 {
897 return eapol->cb.sta_entry_alive(eapol->conf.ctx, addr);
898 }
899
900
eapol_sm_step_run(struct eapol_state_machine * sm)901 static void eapol_sm_step_run(struct eapol_state_machine *sm)
902 {
903 struct eapol_authenticator *eapol = sm->eapol;
904 u8 addr[ETH_ALEN];
905 unsigned int prev_auth_pae, prev_be_auth, prev_reauth_timer,
906 prev_auth_key_tx, prev_key_rx, prev_ctrl_dir;
907 int max_steps = 100;
908
909 os_memcpy(addr, sm->addr, ETH_ALEN);
910
911 /*
912 * Allow EAPOL state machines to run as long as there are state
913 * changes, but exit and return here through event loop if more than
914 * 100 steps is needed as a precaution against infinite loops inside
915 * eloop callback.
916 */
917 restart:
918 prev_auth_pae = sm->auth_pae_state;
919 prev_be_auth = sm->be_auth_state;
920 prev_reauth_timer = sm->reauth_timer_state;
921 prev_auth_key_tx = sm->auth_key_tx_state;
922 prev_key_rx = sm->key_rx_state;
923 prev_ctrl_dir = sm->ctrl_dir_state;
924
925 SM_STEP_RUN(AUTH_PAE);
926 if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
927 SM_STEP_RUN(BE_AUTH);
928 if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
929 SM_STEP_RUN(REAUTH_TIMER);
930 #ifdef CONFIG_WEP
931 if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
932 SM_STEP_RUN(AUTH_KEY_TX);
933 if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
934 SM_STEP_RUN(KEY_RX);
935 #endif /* CONFIG_WEP */
936 if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
937 SM_STEP_RUN(CTRL_DIR);
938
939 if (prev_auth_pae != sm->auth_pae_state ||
940 prev_be_auth != sm->be_auth_state ||
941 prev_reauth_timer != sm->reauth_timer_state ||
942 prev_auth_key_tx != sm->auth_key_tx_state ||
943 prev_key_rx != sm->key_rx_state ||
944 prev_ctrl_dir != sm->ctrl_dir_state) {
945 if (--max_steps > 0)
946 goto restart;
947 /* Re-run from eloop timeout */
948 eapol_auth_step(sm);
949 return;
950 }
951
952 if (eapol_sm_sta_entry_alive(eapol, addr) && sm->eap) {
953 if (eap_server_sm_step(sm->eap)) {
954 if (--max_steps > 0)
955 goto restart;
956 /* Re-run from eloop timeout */
957 eapol_auth_step(sm);
958 return;
959 }
960
961 /* TODO: find a better location for this */
962 if (sm->eap_if->aaaEapResp) {
963 sm->eap_if->aaaEapResp = false;
964 if (sm->eap_if->aaaEapRespData == NULL) {
965 wpa_printf(MSG_DEBUG, "EAPOL: aaaEapResp set, "
966 "but no aaaEapRespData available");
967 return;
968 }
969 sm->eapol->cb.aaa_send(
970 sm->eapol->conf.ctx, sm->sta,
971 wpabuf_head(sm->eap_if->aaaEapRespData),
972 wpabuf_len(sm->eap_if->aaaEapRespData));
973 }
974 }
975
976 if (eapol_sm_sta_entry_alive(eapol, addr))
977 sm->eapol->cb.eapol_event(sm->eapol->conf.ctx, sm->sta,
978 EAPOL_AUTH_SM_CHANGE);
979 }
980
981
eapol_sm_step_cb(void * eloop_ctx,void * timeout_ctx)982 static void eapol_sm_step_cb(void *eloop_ctx, void *timeout_ctx)
983 {
984 struct eapol_state_machine *sm = eloop_ctx;
985 eapol_sm_step_run(sm);
986 }
987
988
989 /**
990 * eapol_auth_step - Advance EAPOL state machines
991 * @sm: EAPOL state machine
992 *
993 * This function is called to advance EAPOL state machines after any change
994 * that could affect their state.
995 */
eapol_auth_step(struct eapol_state_machine * sm)996 void eapol_auth_step(struct eapol_state_machine *sm)
997 {
998 /*
999 * Run eapol_sm_step_run from a registered timeout to make sure that
1000 * other possible timeouts/events are processed and to avoid long
1001 * function call chains.
1002 */
1003
1004 eloop_register_timeout(0, 0, eapol_sm_step_cb, sm, NULL);
1005 }
1006
1007
eapol_auth_initialize(struct eapol_state_machine * sm)1008 static void eapol_auth_initialize(struct eapol_state_machine *sm)
1009 {
1010 sm->initializing = true;
1011 /* Initialize the state machines by asserting initialize and then
1012 * deasserting it after one step */
1013 sm->initialize = true;
1014 eapol_sm_step_run(sm);
1015 sm->initialize = false;
1016 eapol_sm_step_run(sm);
1017 sm->initializing = false;
1018
1019 /* Start one second tick for port timers state machine */
1020 eloop_cancel_timeout(eapol_port_timers_tick, NULL, sm);
1021 eloop_register_timeout(1, 0, eapol_port_timers_tick, NULL, sm);
1022 }
1023
1024
eapol_sm_get_eap_user(void * ctx,const u8 * identity,size_t identity_len,int phase2,struct eap_user * user)1025 static int eapol_sm_get_eap_user(void *ctx, const u8 *identity,
1026 size_t identity_len, int phase2,
1027 struct eap_user *user)
1028 {
1029 struct eapol_state_machine *sm = ctx;
1030
1031 return sm->eapol->cb.get_eap_user(sm->eapol->conf.ctx, identity,
1032 identity_len, phase2, user);
1033 }
1034
1035
eapol_sm_get_eap_req_id_text(void * ctx,size_t * len)1036 static const char * eapol_sm_get_eap_req_id_text(void *ctx, size_t *len)
1037 {
1038 struct eapol_state_machine *sm = ctx;
1039 *len = sm->eapol->conf.eap_req_id_text_len;
1040 return sm->eapol->conf.eap_req_id_text;
1041 }
1042
1043
eapol_sm_get_erp_send_reauth_start(void * ctx)1044 static int eapol_sm_get_erp_send_reauth_start(void *ctx)
1045 {
1046 struct eapol_state_machine *sm = ctx;
1047 return sm->eapol->conf.erp_send_reauth_start;
1048 }
1049
1050
eapol_sm_get_erp_domain(void * ctx)1051 static const char * eapol_sm_get_erp_domain(void *ctx)
1052 {
1053 struct eapol_state_machine *sm = ctx;
1054 return sm->eapol->conf.erp_domain;
1055 }
1056
1057
eapol_sm_erp_get_key(void * ctx,const char * keyname)1058 static struct eap_server_erp_key * eapol_sm_erp_get_key(void *ctx,
1059 const char *keyname)
1060 {
1061 struct eapol_state_machine *sm = ctx;
1062 return sm->eapol->cb.erp_get_key(sm->eapol->conf.ctx, keyname);
1063 }
1064
1065
eapol_sm_erp_add_key(void * ctx,struct eap_server_erp_key * erp)1066 static int eapol_sm_erp_add_key(void *ctx, struct eap_server_erp_key *erp)
1067 {
1068 struct eapol_state_machine *sm = ctx;
1069 return sm->eapol->cb.erp_add_key(sm->eapol->conf.ctx, erp);
1070 }
1071
1072
1073 static const struct eapol_callbacks eapol_cb =
1074 {
1075 eapol_sm_get_eap_user,
1076 eapol_sm_get_eap_req_id_text,
1077 NULL,
1078 eapol_sm_get_erp_send_reauth_start,
1079 eapol_sm_get_erp_domain,
1080 eapol_sm_erp_get_key,
1081 eapol_sm_erp_add_key,
1082 };
1083
1084
eapol_auth_eap_pending_cb(struct eapol_state_machine * sm,void * ctx)1085 int eapol_auth_eap_pending_cb(struct eapol_state_machine *sm, void *ctx)
1086 {
1087 if (sm == NULL || ctx == NULL || ctx != sm->eap)
1088 return -1;
1089
1090 eap_sm_pending_cb(sm->eap);
1091 eapol_auth_step(sm);
1092
1093 return 0;
1094 }
1095
1096
eapol_auth_reauthenticate(struct eapol_state_machine * sm)1097 void eapol_auth_reauthenticate(struct eapol_state_machine *sm)
1098 {
1099 wpa_printf(MSG_DEBUG, "EAPOL: External reauthentication trigger for "
1100 MACSTR, MAC2STR(sm->addr));
1101 sm->reAuthenticate = true;
1102 eapol_auth_step(sm);
1103 }
1104
1105
eapol_auth_set_conf(struct eapol_state_machine * sm,const char * param,const char * value)1106 int eapol_auth_set_conf(struct eapol_state_machine *sm, const char *param,
1107 const char *value)
1108 {
1109 wpa_printf(MSG_DEBUG, "EAPOL: External configuration operation for "
1110 MACSTR " - param=%s value=%s",
1111 MAC2STR(sm->addr), param, value);
1112
1113 if (os_strcasecmp(param, "AdminControlledDirections") == 0) {
1114 if (os_strcmp(value, "Both") == 0)
1115 sm->adminControlledDirections = Both;
1116 else if (os_strcmp(value, "In") == 0)
1117 sm->adminControlledDirections = In;
1118 else
1119 return -1;
1120 eapol_auth_step(sm);
1121 return 0;
1122 }
1123
1124 if (os_strcasecmp(param, "AdminControlledPortControl") == 0) {
1125 if (os_strcmp(value, "ForceAuthorized") == 0)
1126 sm->portControl = ForceAuthorized;
1127 else if (os_strcmp(value, "ForceUnauthorized") == 0)
1128 sm->portControl = ForceUnauthorized;
1129 else if (os_strcmp(value, "Auto") == 0)
1130 sm->portControl = Auto;
1131 else
1132 return -1;
1133 eapol_auth_step(sm);
1134 return 0;
1135 }
1136
1137 if (os_strcasecmp(param, "quietPeriod") == 0) {
1138 sm->quietPeriod = atoi(value);
1139 return 0;
1140 }
1141
1142 if (os_strcasecmp(param, "serverTimeout") == 0) {
1143 sm->serverTimeout = atoi(value);
1144 return 0;
1145 }
1146
1147 if (os_strcasecmp(param, "reAuthPeriod") == 0) {
1148 sm->reAuthPeriod = atoi(value);
1149 return 0;
1150 }
1151
1152 if (os_strcasecmp(param, "reAuthEnabled") == 0) {
1153 if (os_strcmp(value, "TRUE") == 0)
1154 sm->reAuthEnabled = true;
1155 else if (os_strcmp(value, "FALSE") == 0)
1156 sm->reAuthEnabled = false;
1157 else
1158 return -1;
1159 eapol_auth_step(sm);
1160 return 0;
1161 }
1162
1163 if (os_strcasecmp(param, "KeyTransmissionEnabled") == 0) {
1164 if (os_strcmp(value, "TRUE") == 0)
1165 sm->keyTxEnabled = true;
1166 else if (os_strcmp(value, "FALSE") == 0)
1167 sm->keyTxEnabled = false;
1168 else
1169 return -1;
1170 eapol_auth_step(sm);
1171 return 0;
1172 }
1173
1174 return -1;
1175 }
1176
1177
eapol_auth_conf_clone(struct eapol_auth_config * dst,struct eapol_auth_config * src)1178 static int eapol_auth_conf_clone(struct eapol_auth_config *dst,
1179 struct eapol_auth_config *src)
1180 {
1181 dst->eap_cfg = src->eap_cfg;
1182 dst->ctx = src->ctx;
1183 dst->eap_reauth_period = src->eap_reauth_period;
1184 dst->wpa = src->wpa;
1185 #ifdef CONFIG_WEP
1186 dst->individual_wep_key_len = src->individual_wep_key_len;
1187 #endif /* CONFIG_WEP */
1188 os_free(dst->eap_req_id_text);
1189 if (src->eap_req_id_text) {
1190 dst->eap_req_id_text = os_memdup(src->eap_req_id_text,
1191 src->eap_req_id_text_len);
1192 if (dst->eap_req_id_text == NULL)
1193 return -1;
1194 dst->eap_req_id_text_len = src->eap_req_id_text_len;
1195 } else {
1196 dst->eap_req_id_text = NULL;
1197 dst->eap_req_id_text_len = 0;
1198 }
1199
1200 os_free(dst->erp_domain);
1201 if (src->erp_domain) {
1202 dst->erp_domain = os_strdup(src->erp_domain);
1203 if (dst->erp_domain == NULL)
1204 goto fail;
1205 } else {
1206 dst->erp_domain = NULL;
1207 }
1208 dst->erp_send_reauth_start = src->erp_send_reauth_start;
1209
1210 return 0;
1211
1212 fail:
1213 eapol_auth_conf_free(dst);
1214 return -1;
1215 }
1216
1217
eapol_auth_conf_free(struct eapol_auth_config * conf)1218 static void eapol_auth_conf_free(struct eapol_auth_config *conf)
1219 {
1220 os_free(conf->eap_req_id_text);
1221 conf->eap_req_id_text = NULL;
1222 os_free(conf->erp_domain);
1223 conf->erp_domain = NULL;
1224 }
1225
1226
eapol_auth_init(struct eapol_auth_config * conf,struct eapol_auth_cb * cb)1227 struct eapol_authenticator * eapol_auth_init(struct eapol_auth_config *conf,
1228 struct eapol_auth_cb *cb)
1229 {
1230 struct eapol_authenticator *eapol;
1231
1232 eapol = os_zalloc(sizeof(*eapol));
1233 if (eapol == NULL)
1234 return NULL;
1235
1236 if (eapol_auth_conf_clone(&eapol->conf, conf) < 0) {
1237 os_free(eapol);
1238 return NULL;
1239 }
1240
1241 #ifdef CONFIG_WEP
1242 if (conf->individual_wep_key_len > 0) {
1243 /* use key0 in individual key and key1 in broadcast key */
1244 eapol->default_wep_key_idx = 1;
1245 }
1246 #endif /* CONFIG_WEP */
1247
1248 eapol->cb.eapol_send = cb->eapol_send;
1249 eapol->cb.aaa_send = cb->aaa_send;
1250 eapol->cb.finished = cb->finished;
1251 eapol->cb.get_eap_user = cb->get_eap_user;
1252 eapol->cb.sta_entry_alive = cb->sta_entry_alive;
1253 eapol->cb.logger = cb->logger;
1254 eapol->cb.set_port_authorized = cb->set_port_authorized;
1255 eapol->cb.abort_auth = cb->abort_auth;
1256 eapol->cb.tx_key = cb->tx_key;
1257 eapol->cb.eapol_event = cb->eapol_event;
1258 eapol->cb.erp_get_key = cb->erp_get_key;
1259 eapol->cb.erp_add_key = cb->erp_add_key;
1260
1261 return eapol;
1262 }
1263
1264
eapol_auth_deinit(struct eapol_authenticator * eapol)1265 void eapol_auth_deinit(struct eapol_authenticator *eapol)
1266 {
1267 if (eapol == NULL)
1268 return;
1269
1270 eapol_auth_conf_free(&eapol->conf);
1271 #ifdef CONFIG_WEP
1272 os_free(eapol->default_wep_key);
1273 #endif /* CONFIG_WEP */
1274 os_free(eapol);
1275 }
1276