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