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
25static 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() \
30sm->eapol->cb.set_port_authorized(sm->eapol->conf.ctx, sm->sta, 1)
31#define setPortUnauthorized() \
32sm->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
43static void eapol_sm_step_run(struct eapol_state_machine *sm);
44static void eapol_sm_step_cb(void *eloop_ctx, void *timeout_ctx);
45static void eapol_auth_initialize(struct eapol_state_machine *sm);
46static void eapol_auth_conf_free(struct eapol_auth_config *conf);
47
48
49static 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
59static void eapol_auth_vlogger(struct eapol_authenticator *eapol,
60			       const u8 *addr, eapol_logger_level level,
61			       const char *fmt, ...)
62{
63	char *format;
64	int maxlen;
65	va_list ap;
66
67	if (eapol->cb.logger == NULL)
68		return;
69
70	maxlen = os_strlen(fmt) + 100;
71	format = os_malloc(maxlen);
72	if (!format)
73		return;
74
75	va_start(ap, fmt);
76	vsnprintf(format, maxlen, fmt, ap);
77	va_end(ap);
78
79	eapol_auth_logger(eapol, addr, level, format);
80
81	os_free(format);
82}
83
84
85static void eapol_auth_tx_canned_eap(struct eapol_state_machine *sm,
86				     int success)
87{
88	struct eap_hdr eap;
89
90	os_memset(&eap, 0, sizeof(eap));
91
92	eap.code = success ? EAP_CODE_SUCCESS : EAP_CODE_FAILURE;
93	eap.identifier = ++sm->last_eap_id;
94	eap.length = host_to_be16(sizeof(eap));
95
96	eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_DEBUG,
97			   "Sending canned EAP packet %s (identifier %d)",
98			   success ? "SUCCESS" : "FAILURE", eap.identifier);
99	sm->eapol->cb.eapol_send(sm->eapol->conf.ctx, sm->sta,
100				 IEEE802_1X_TYPE_EAP_PACKET,
101				 (u8 *) &eap, sizeof(eap));
102	sm->dot1xAuthEapolFramesTx++;
103}
104
105
106static void eapol_auth_tx_req(struct eapol_state_machine *sm)
107{
108	if (sm->eap_if->eapReqData == NULL ||
109	    wpabuf_len(sm->eap_if->eapReqData) < sizeof(struct eap_hdr)) {
110		eapol_auth_logger(sm->eapol, sm->addr,
111				  EAPOL_LOGGER_DEBUG,
112				  "TxReq called, but there is no EAP request "
113				  "from authentication server");
114		return;
115	}
116
117	if (sm->flags & EAPOL_SM_WAIT_START) {
118		wpa_printf(MSG_DEBUG, "EAPOL: Drop EAPOL TX to " MACSTR
119			   " while waiting for EAPOL-Start",
120			   MAC2STR(sm->addr));
121		return;
122	}
123
124	sm->last_eap_id = eap_get_id(sm->eap_if->eapReqData);
125	eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_DEBUG,
126			   "Sending EAP Packet (identifier %d)",
127			   sm->last_eap_id);
128	sm->eapol->cb.eapol_send(sm->eapol->conf.ctx, sm->sta,
129				 IEEE802_1X_TYPE_EAP_PACKET,
130				 wpabuf_head(sm->eap_if->eapReqData),
131				 wpabuf_len(sm->eap_if->eapReqData));
132	sm->dot1xAuthEapolFramesTx++;
133	if (eap_get_type(sm->eap_if->eapReqData) == EAP_TYPE_IDENTITY)
134		sm->dot1xAuthEapolReqIdFramesTx++;
135	else
136		sm->dot1xAuthEapolReqFramesTx++;
137}
138
139
140/**
141 * eapol_port_timers_tick - Port Timers state machine
142 * @eloop_ctx: struct eapol_state_machine *
143 * @timeout_ctx: Not used
144 *
145 * This statemachine is implemented as a function that will be called
146 * once a second as a registered event loop timeout.
147 */
148static void eapol_port_timers_tick(void *eloop_ctx, void *timeout_ctx)
149{
150	struct eapol_state_machine *state = timeout_ctx;
151
152	if (state->aWhile > 0) {
153		state->aWhile--;
154		if (state->aWhile == 0) {
155			wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR
156				   " - aWhile --> 0",
157				   MAC2STR(state->addr));
158		}
159	}
160
161	if (state->quietWhile > 0) {
162		state->quietWhile--;
163		if (state->quietWhile == 0) {
164			wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR
165				   " - quietWhile --> 0",
166				   MAC2STR(state->addr));
167		}
168	}
169
170	if (state->reAuthWhen > 0) {
171		state->reAuthWhen--;
172		if (state->reAuthWhen == 0) {
173			wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR
174				   " - reAuthWhen --> 0",
175				   MAC2STR(state->addr));
176		}
177	}
178
179	if (state->eap_if->retransWhile > 0) {
180		state->eap_if->retransWhile--;
181		if (state->eap_if->retransWhile == 0) {
182			wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR
183				   " - (EAP) retransWhile --> 0",
184				   MAC2STR(state->addr));
185		}
186	}
187
188	eapol_sm_step_run(state);
189
190	eloop_register_timeout(1, 0, eapol_port_timers_tick, eloop_ctx, state);
191}
192
193
194
195/* Authenticator PAE state machine */
196
197SM_STATE(AUTH_PAE, INITIALIZE)
198{
199	SM_ENTRY_MA(AUTH_PAE, INITIALIZE, auth_pae);
200	sm->portMode = Auto;
201
202	/*
203	 * Clearing keyRun here is not specified in IEEE Std 802.1X-2004, but
204	 * it looks like this would be logical thing to do here since the
205	 * EAPOL-Key exchange is not possible in this state. It is possible to
206	 * get here on disconnection event without advancing to the
207	 * AUTHENTICATING state to clear keyRun before the IEEE 802.11 RSN
208	 * authenticator state machine runs and that may advance from
209	 * AUTHENTICATION2 to INITPMK if keyRun = TRUE has been left from the
210	 * last association. This can be avoided by clearing keyRun here.
211	 */
212	sm->keyRun = FALSE;
213}
214
215
216SM_STATE(AUTH_PAE, DISCONNECTED)
217{
218	int from_initialize = sm->auth_pae_state == AUTH_PAE_INITIALIZE;
219
220	if (sm->eapolLogoff) {
221		if (sm->auth_pae_state == AUTH_PAE_CONNECTING)
222			sm->authEapLogoffsWhileConnecting++;
223		else if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATED)
224			sm->authAuthEapLogoffWhileAuthenticated++;
225	}
226
227	SM_ENTRY_MA(AUTH_PAE, DISCONNECTED, auth_pae);
228
229	sm->authPortStatus = Unauthorized;
230	setPortUnauthorized();
231	sm->reAuthCount = 0;
232	sm->eapolLogoff = FALSE;
233	if (!from_initialize) {
234		sm->eapol->cb.finished(sm->eapol->conf.ctx, sm->sta, 0,
235				       sm->flags & EAPOL_SM_PREAUTH,
236				       sm->remediation);
237	}
238}
239
240
241SM_STATE(AUTH_PAE, RESTART)
242{
243	if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATED) {
244		if (sm->reAuthenticate)
245			sm->authAuthReauthsWhileAuthenticated++;
246		if (sm->eapolStart)
247			sm->authAuthEapStartsWhileAuthenticated++;
248		if (sm->eapolLogoff)
249			sm->authAuthEapLogoffWhileAuthenticated++;
250	}
251
252	SM_ENTRY_MA(AUTH_PAE, RESTART, auth_pae);
253
254	sm->eap_if->eapRestart = TRUE;
255}
256
257
258SM_STATE(AUTH_PAE, CONNECTING)
259{
260	if (sm->auth_pae_state != AUTH_PAE_CONNECTING)
261		sm->authEntersConnecting++;
262
263	SM_ENTRY_MA(AUTH_PAE, CONNECTING, auth_pae);
264
265	sm->reAuthenticate = FALSE;
266	sm->reAuthCount++;
267}
268
269
270SM_STATE(AUTH_PAE, HELD)
271{
272	if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATING && sm->authFail)
273		sm->authAuthFailWhileAuthenticating++;
274
275	SM_ENTRY_MA(AUTH_PAE, HELD, auth_pae);
276
277	sm->authPortStatus = Unauthorized;
278	setPortUnauthorized();
279	sm->quietWhile = sm->quietPeriod;
280	sm->eapolLogoff = FALSE;
281
282	eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_WARNING,
283			   "authentication failed - EAP type: %d (%s)",
284			   sm->eap_type_authsrv,
285			   eap_server_get_name(0, sm->eap_type_authsrv));
286	if (sm->eap_type_authsrv != sm->eap_type_supp) {
287		eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_INFO,
288				   "Supplicant used different EAP type: "
289				   "%d (%s)", sm->eap_type_supp,
290				   eap_server_get_name(0, sm->eap_type_supp));
291	}
292	sm->eapol->cb.finished(sm->eapol->conf.ctx, sm->sta, 0,
293			       sm->flags & EAPOL_SM_PREAUTH, sm->remediation);
294}
295
296
297SM_STATE(AUTH_PAE, AUTHENTICATED)
298{
299	char *extra = "";
300
301	if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATING && sm->authSuccess)
302		sm->authAuthSuccessesWhileAuthenticating++;
303
304	SM_ENTRY_MA(AUTH_PAE, AUTHENTICATED, auth_pae);
305
306	sm->authPortStatus = Authorized;
307	setPortAuthorized();
308	sm->reAuthCount = 0;
309	if (sm->flags & EAPOL_SM_PREAUTH)
310		extra = " (pre-authentication)";
311	else if (sm->flags & EAPOL_SM_FROM_PMKSA_CACHE)
312		extra = " (PMKSA cache)";
313	eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_INFO,
314			   "authenticated - EAP type: %d (%s)%s",
315			   sm->eap_type_authsrv,
316			   eap_server_get_name(0, sm->eap_type_authsrv),
317			   extra);
318	sm->eapol->cb.finished(sm->eapol->conf.ctx, sm->sta, 1,
319			       sm->flags & EAPOL_SM_PREAUTH, sm->remediation);
320}
321
322
323SM_STATE(AUTH_PAE, AUTHENTICATING)
324{
325	SM_ENTRY_MA(AUTH_PAE, AUTHENTICATING, auth_pae);
326
327	sm->eapolStart = FALSE;
328	sm->authSuccess = FALSE;
329	sm->authFail = FALSE;
330	sm->authTimeout = FALSE;
331	sm->authStart = TRUE;
332	sm->keyRun = FALSE;
333	sm->keyDone = FALSE;
334}
335
336
337SM_STATE(AUTH_PAE, ABORTING)
338{
339	if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATING) {
340		if (sm->authTimeout)
341			sm->authAuthTimeoutsWhileAuthenticating++;
342		if (sm->eapolStart)
343			sm->authAuthEapStartsWhileAuthenticating++;
344		if (sm->eapolLogoff)
345			sm->authAuthEapLogoffWhileAuthenticating++;
346	}
347
348	SM_ENTRY_MA(AUTH_PAE, ABORTING, auth_pae);
349
350	sm->authAbort = TRUE;
351	sm->keyRun = FALSE;
352	sm->keyDone = FALSE;
353}
354
355
356SM_STATE(AUTH_PAE, FORCE_AUTH)
357{
358	SM_ENTRY_MA(AUTH_PAE, FORCE_AUTH, auth_pae);
359
360	sm->authPortStatus = Authorized;
361	setPortAuthorized();
362	sm->portMode = ForceAuthorized;
363	sm->eapolStart = FALSE;
364	txCannedSuccess();
365}
366
367
368SM_STATE(AUTH_PAE, FORCE_UNAUTH)
369{
370	SM_ENTRY_MA(AUTH_PAE, FORCE_UNAUTH, auth_pae);
371
372	sm->authPortStatus = Unauthorized;
373	setPortUnauthorized();
374	sm->portMode = ForceUnauthorized;
375	sm->eapolStart = FALSE;
376	txCannedFail();
377}
378
379
380SM_STEP(AUTH_PAE)
381{
382	if ((sm->portControl == Auto && sm->portMode != sm->portControl) ||
383	    sm->initialize || !sm->eap_if->portEnabled)
384		SM_ENTER_GLOBAL(AUTH_PAE, INITIALIZE);
385	else if (sm->portControl == ForceAuthorized &&
386		 sm->portMode != sm->portControl &&
387		 !(sm->initialize || !sm->eap_if->portEnabled))
388		SM_ENTER_GLOBAL(AUTH_PAE, FORCE_AUTH);
389	else if (sm->portControl == ForceUnauthorized &&
390		 sm->portMode != sm->portControl &&
391		 !(sm->initialize || !sm->eap_if->portEnabled))
392		SM_ENTER_GLOBAL(AUTH_PAE, FORCE_UNAUTH);
393	else {
394		switch (sm->auth_pae_state) {
395		case AUTH_PAE_INITIALIZE:
396			SM_ENTER(AUTH_PAE, DISCONNECTED);
397			break;
398		case AUTH_PAE_DISCONNECTED:
399			SM_ENTER(AUTH_PAE, RESTART);
400			break;
401		case AUTH_PAE_RESTART:
402			if (!sm->eap_if->eapRestart)
403				SM_ENTER(AUTH_PAE, CONNECTING);
404			break;
405		case AUTH_PAE_HELD:
406			if (sm->quietWhile == 0)
407				SM_ENTER(AUTH_PAE, RESTART);
408			break;
409		case AUTH_PAE_CONNECTING:
410			if (sm->eapolLogoff || sm->reAuthCount > sm->reAuthMax)
411				SM_ENTER(AUTH_PAE, DISCONNECTED);
412			else if ((sm->eap_if->eapReq &&
413				  sm->reAuthCount <= sm->reAuthMax) ||
414				 sm->eap_if->eapSuccess || sm->eap_if->eapFail)
415				SM_ENTER(AUTH_PAE, AUTHENTICATING);
416			break;
417		case AUTH_PAE_AUTHENTICATED:
418			if (sm->eapolStart || sm->reAuthenticate)
419				SM_ENTER(AUTH_PAE, RESTART);
420			else if (sm->eapolLogoff || !sm->portValid)
421				SM_ENTER(AUTH_PAE, DISCONNECTED);
422			break;
423		case AUTH_PAE_AUTHENTICATING:
424			if (sm->authSuccess && sm->portValid)
425				SM_ENTER(AUTH_PAE, AUTHENTICATED);
426			else if (sm->authFail ||
427				 (sm->keyDone && !sm->portValid))
428				SM_ENTER(AUTH_PAE, HELD);
429			else if (sm->eapolStart || sm->eapolLogoff ||
430				 sm->authTimeout)
431				SM_ENTER(AUTH_PAE, ABORTING);
432			break;
433		case AUTH_PAE_ABORTING:
434			if (sm->eapolLogoff && !sm->authAbort)
435				SM_ENTER(AUTH_PAE, DISCONNECTED);
436			else if (!sm->eapolLogoff && !sm->authAbort)
437				SM_ENTER(AUTH_PAE, RESTART);
438			break;
439		case AUTH_PAE_FORCE_AUTH:
440			if (sm->eapolStart)
441				SM_ENTER(AUTH_PAE, FORCE_AUTH);
442			break;
443		case AUTH_PAE_FORCE_UNAUTH:
444			if (sm->eapolStart)
445				SM_ENTER(AUTH_PAE, FORCE_UNAUTH);
446			break;
447		}
448	}
449}
450
451
452
453/* Backend Authentication state machine */
454
455SM_STATE(BE_AUTH, INITIALIZE)
456{
457	SM_ENTRY_MA(BE_AUTH, INITIALIZE, be_auth);
458
459	abortAuth();
460	sm->eap_if->eapNoReq = FALSE;
461	sm->authAbort = FALSE;
462}
463
464
465SM_STATE(BE_AUTH, REQUEST)
466{
467	SM_ENTRY_MA(BE_AUTH, REQUEST, be_auth);
468
469	txReq();
470	sm->eap_if->eapReq = FALSE;
471	sm->backendOtherRequestsToSupplicant++;
472
473	/*
474	 * Clearing eapolEap here is not specified in IEEE Std 802.1X-2004, but
475	 * it looks like this would be logical thing to do there since the old
476	 * EAP response would not be valid anymore after the new EAP request
477	 * was sent out.
478	 *
479	 * A race condition has been reported, in which hostapd ended up
480	 * sending out EAP-Response/Identity as a response to the first
481	 * EAP-Request from the main EAP method. This can be avoided by
482	 * clearing eapolEap here.
483	 */
484	sm->eapolEap = FALSE;
485}
486
487
488SM_STATE(BE_AUTH, RESPONSE)
489{
490	SM_ENTRY_MA(BE_AUTH, RESPONSE, be_auth);
491
492	sm->authTimeout = FALSE;
493	sm->eapolEap = FALSE;
494	sm->eap_if->eapNoReq = FALSE;
495	sm->aWhile = sm->serverTimeout;
496	sm->eap_if->eapResp = TRUE;
497	/* sendRespToServer(); */
498	sm->backendResponses++;
499}
500
501
502SM_STATE(BE_AUTH, SUCCESS)
503{
504	SM_ENTRY_MA(BE_AUTH, SUCCESS, be_auth);
505
506	txReq();
507	sm->authSuccess = TRUE;
508	sm->keyRun = TRUE;
509}
510
511
512SM_STATE(BE_AUTH, FAIL)
513{
514	SM_ENTRY_MA(BE_AUTH, FAIL, be_auth);
515
516	txReq();
517	sm->authFail = TRUE;
518}
519
520
521SM_STATE(BE_AUTH, TIMEOUT)
522{
523	SM_ENTRY_MA(BE_AUTH, TIMEOUT, be_auth);
524
525	sm->authTimeout = TRUE;
526}
527
528
529SM_STATE(BE_AUTH, IDLE)
530{
531	SM_ENTRY_MA(BE_AUTH, IDLE, be_auth);
532
533	sm->authStart = FALSE;
534}
535
536
537SM_STATE(BE_AUTH, IGNORE)
538{
539	SM_ENTRY_MA(BE_AUTH, IGNORE, be_auth);
540
541	sm->eap_if->eapNoReq = FALSE;
542}
543
544
545SM_STEP(BE_AUTH)
546{
547	if (sm->portControl != Auto || sm->initialize || sm->authAbort) {
548		SM_ENTER_GLOBAL(BE_AUTH, INITIALIZE);
549		return;
550	}
551
552	switch (sm->be_auth_state) {
553	case BE_AUTH_INITIALIZE:
554		SM_ENTER(BE_AUTH, IDLE);
555		break;
556	case BE_AUTH_REQUEST:
557		if (sm->eapolEap)
558			SM_ENTER(BE_AUTH, RESPONSE);
559		else if (sm->eap_if->eapReq)
560			SM_ENTER(BE_AUTH, REQUEST);
561		else if (sm->eap_if->eapTimeout)
562			SM_ENTER(BE_AUTH, TIMEOUT);
563		break;
564	case BE_AUTH_RESPONSE:
565		if (sm->eap_if->eapNoReq)
566			SM_ENTER(BE_AUTH, IGNORE);
567		if (sm->eap_if->eapReq) {
568			sm->backendAccessChallenges++;
569			SM_ENTER(BE_AUTH, REQUEST);
570		} else if (sm->aWhile == 0)
571			SM_ENTER(BE_AUTH, TIMEOUT);
572		else if (sm->eap_if->eapFail) {
573			sm->backendAuthFails++;
574			SM_ENTER(BE_AUTH, FAIL);
575		} else if (sm->eap_if->eapSuccess) {
576			sm->backendAuthSuccesses++;
577			SM_ENTER(BE_AUTH, SUCCESS);
578		}
579		break;
580	case BE_AUTH_SUCCESS:
581		SM_ENTER(BE_AUTH, IDLE);
582		break;
583	case BE_AUTH_FAIL:
584		SM_ENTER(BE_AUTH, IDLE);
585		break;
586	case BE_AUTH_TIMEOUT:
587		SM_ENTER(BE_AUTH, IDLE);
588		break;
589	case BE_AUTH_IDLE:
590		if (sm->eap_if->eapFail && sm->authStart)
591			SM_ENTER(BE_AUTH, FAIL);
592		else if (sm->eap_if->eapReq && sm->authStart)
593			SM_ENTER(BE_AUTH, REQUEST);
594		else if (sm->eap_if->eapSuccess && sm->authStart)
595			SM_ENTER(BE_AUTH, SUCCESS);
596		break;
597	case BE_AUTH_IGNORE:
598		if (sm->eapolEap)
599			SM_ENTER(BE_AUTH, RESPONSE);
600		else if (sm->eap_if->eapReq)
601			SM_ENTER(BE_AUTH, REQUEST);
602		else if (sm->eap_if->eapTimeout)
603			SM_ENTER(BE_AUTH, TIMEOUT);
604		break;
605	}
606}
607
608
609
610/* Reauthentication Timer state machine */
611
612SM_STATE(REAUTH_TIMER, INITIALIZE)
613{
614	SM_ENTRY_MA(REAUTH_TIMER, INITIALIZE, reauth_timer);
615
616	sm->reAuthWhen = sm->reAuthPeriod;
617}
618
619
620SM_STATE(REAUTH_TIMER, REAUTHENTICATE)
621{
622	SM_ENTRY_MA(REAUTH_TIMER, REAUTHENTICATE, reauth_timer);
623
624	sm->reAuthenticate = TRUE;
625	sm->eapol->cb.eapol_event(sm->eapol->conf.ctx, sm->sta,
626				  EAPOL_AUTH_REAUTHENTICATE);
627}
628
629
630SM_STEP(REAUTH_TIMER)
631{
632	if (sm->portControl != Auto || sm->initialize ||
633	    sm->authPortStatus == Unauthorized || !sm->reAuthEnabled) {
634		SM_ENTER_GLOBAL(REAUTH_TIMER, INITIALIZE);
635		return;
636	}
637
638	switch (sm->reauth_timer_state) {
639	case REAUTH_TIMER_INITIALIZE:
640		if (sm->reAuthWhen == 0)
641			SM_ENTER(REAUTH_TIMER, REAUTHENTICATE);
642		break;
643	case REAUTH_TIMER_REAUTHENTICATE:
644		SM_ENTER(REAUTH_TIMER, INITIALIZE);
645		break;
646	}
647}
648
649
650
651/* Authenticator Key Transmit state machine */
652
653SM_STATE(AUTH_KEY_TX, NO_KEY_TRANSMIT)
654{
655	SM_ENTRY_MA(AUTH_KEY_TX, NO_KEY_TRANSMIT, auth_key_tx);
656}
657
658
659SM_STATE(AUTH_KEY_TX, KEY_TRANSMIT)
660{
661	SM_ENTRY_MA(AUTH_KEY_TX, KEY_TRANSMIT, auth_key_tx);
662
663	txKey();
664	sm->eap_if->eapKeyAvailable = FALSE;
665	sm->keyDone = TRUE;
666}
667
668
669SM_STEP(AUTH_KEY_TX)
670{
671	if (sm->initialize || sm->portControl != Auto) {
672		SM_ENTER_GLOBAL(AUTH_KEY_TX, NO_KEY_TRANSMIT);
673		return;
674	}
675
676	switch (sm->auth_key_tx_state) {
677	case AUTH_KEY_TX_NO_KEY_TRANSMIT:
678		if (sm->keyTxEnabled && sm->eap_if->eapKeyAvailable &&
679		    sm->keyRun && !(sm->flags & EAPOL_SM_USES_WPA))
680			SM_ENTER(AUTH_KEY_TX, KEY_TRANSMIT);
681		break;
682	case AUTH_KEY_TX_KEY_TRANSMIT:
683		if (!sm->keyTxEnabled || !sm->keyRun)
684			SM_ENTER(AUTH_KEY_TX, NO_KEY_TRANSMIT);
685		else if (sm->eap_if->eapKeyAvailable)
686			SM_ENTER(AUTH_KEY_TX, KEY_TRANSMIT);
687		break;
688	}
689}
690
691
692
693/* Key Receive state machine */
694
695SM_STATE(KEY_RX, NO_KEY_RECEIVE)
696{
697	SM_ENTRY_MA(KEY_RX, NO_KEY_RECEIVE, key_rx);
698}
699
700
701SM_STATE(KEY_RX, KEY_RECEIVE)
702{
703	SM_ENTRY_MA(KEY_RX, KEY_RECEIVE, key_rx);
704
705	processKey();
706	sm->rxKey = FALSE;
707}
708
709
710SM_STEP(KEY_RX)
711{
712	if (sm->initialize || !sm->eap_if->portEnabled) {
713		SM_ENTER_GLOBAL(KEY_RX, NO_KEY_RECEIVE);
714		return;
715	}
716
717	switch (sm->key_rx_state) {
718	case KEY_RX_NO_KEY_RECEIVE:
719		if (sm->rxKey)
720			SM_ENTER(KEY_RX, KEY_RECEIVE);
721		break;
722	case KEY_RX_KEY_RECEIVE:
723		if (sm->rxKey)
724			SM_ENTER(KEY_RX, KEY_RECEIVE);
725		break;
726	}
727}
728
729
730
731/* Controlled Directions state machine */
732
733SM_STATE(CTRL_DIR, FORCE_BOTH)
734{
735	SM_ENTRY_MA(CTRL_DIR, FORCE_BOTH, ctrl_dir);
736	sm->operControlledDirections = Both;
737}
738
739
740SM_STATE(CTRL_DIR, IN_OR_BOTH)
741{
742	SM_ENTRY_MA(CTRL_DIR, IN_OR_BOTH, ctrl_dir);
743	sm->operControlledDirections = sm->adminControlledDirections;
744}
745
746
747SM_STEP(CTRL_DIR)
748{
749	if (sm->initialize) {
750		SM_ENTER_GLOBAL(CTRL_DIR, IN_OR_BOTH);
751		return;
752	}
753
754	switch (sm->ctrl_dir_state) {
755	case CTRL_DIR_FORCE_BOTH:
756		if (sm->eap_if->portEnabled && sm->operEdge)
757			SM_ENTER(CTRL_DIR, IN_OR_BOTH);
758		break;
759	case CTRL_DIR_IN_OR_BOTH:
760		if (sm->operControlledDirections !=
761		    sm->adminControlledDirections)
762			SM_ENTER(CTRL_DIR, IN_OR_BOTH);
763		if (!sm->eap_if->portEnabled || !sm->operEdge)
764			SM_ENTER(CTRL_DIR, FORCE_BOTH);
765		break;
766	}
767}
768
769
770
771struct eapol_state_machine *
772eapol_auth_alloc(struct eapol_authenticator *eapol, const u8 *addr,
773		 int flags, const struct wpabuf *assoc_wps_ie,
774		 const struct wpabuf *assoc_p2p_ie, void *sta_ctx,
775		 const char *identity, const char *radius_cui)
776{
777	struct eapol_state_machine *sm;
778	struct eap_config eap_conf;
779
780	if (eapol == NULL)
781		return NULL;
782
783	sm = os_zalloc(sizeof(*sm));
784	if (sm == NULL) {
785		wpa_printf(MSG_DEBUG, "IEEE 802.1X state machine allocation "
786			   "failed");
787		return NULL;
788	}
789	sm->radius_identifier = -1;
790	os_memcpy(sm->addr, addr, ETH_ALEN);
791	sm->flags = flags;
792
793	sm->eapol = eapol;
794	sm->sta = sta_ctx;
795
796	/* Set default values for state machine constants */
797	sm->auth_pae_state = AUTH_PAE_INITIALIZE;
798	sm->quietPeriod = AUTH_PAE_DEFAULT_quietPeriod;
799	sm->reAuthMax = AUTH_PAE_DEFAULT_reAuthMax;
800
801	sm->be_auth_state = BE_AUTH_INITIALIZE;
802	sm->serverTimeout = BE_AUTH_DEFAULT_serverTimeout;
803
804	sm->reauth_timer_state = REAUTH_TIMER_INITIALIZE;
805	sm->reAuthPeriod = eapol->conf.eap_reauth_period;
806	sm->reAuthEnabled = eapol->conf.eap_reauth_period > 0 ? TRUE : FALSE;
807
808	sm->auth_key_tx_state = AUTH_KEY_TX_NO_KEY_TRANSMIT;
809
810	sm->key_rx_state = KEY_RX_NO_KEY_RECEIVE;
811
812	sm->ctrl_dir_state = CTRL_DIR_IN_OR_BOTH;
813
814	sm->portControl = Auto;
815
816	if (!eapol->conf.wpa &&
817	    (eapol->default_wep_key || eapol->conf.individual_wep_key_len > 0))
818		sm->keyTxEnabled = TRUE;
819	else
820		sm->keyTxEnabled = FALSE;
821	if (eapol->conf.wpa)
822		sm->portValid = FALSE;
823	else
824		sm->portValid = TRUE;
825
826	os_memset(&eap_conf, 0, sizeof(eap_conf));
827	eap_conf.eap_server = eapol->conf.eap_server;
828	eap_conf.ssl_ctx = eapol->conf.ssl_ctx;
829	eap_conf.msg_ctx = eapol->conf.msg_ctx;
830	eap_conf.eap_sim_db_priv = eapol->conf.eap_sim_db_priv;
831	eap_conf.pac_opaque_encr_key = eapol->conf.pac_opaque_encr_key;
832	eap_conf.eap_fast_a_id = eapol->conf.eap_fast_a_id;
833	eap_conf.eap_fast_a_id_len = eapol->conf.eap_fast_a_id_len;
834	eap_conf.eap_fast_a_id_info = eapol->conf.eap_fast_a_id_info;
835	eap_conf.eap_fast_prov = eapol->conf.eap_fast_prov;
836	eap_conf.pac_key_lifetime = eapol->conf.pac_key_lifetime;
837	eap_conf.pac_key_refresh_time = eapol->conf.pac_key_refresh_time;
838	eap_conf.eap_sim_aka_result_ind = eapol->conf.eap_sim_aka_result_ind;
839	eap_conf.tnc = eapol->conf.tnc;
840	eap_conf.wps = eapol->conf.wps;
841	eap_conf.assoc_wps_ie = assoc_wps_ie;
842	eap_conf.assoc_p2p_ie = assoc_p2p_ie;
843	eap_conf.peer_addr = addr;
844	eap_conf.fragment_size = eapol->conf.fragment_size;
845	eap_conf.pwd_group = eapol->conf.pwd_group;
846	eap_conf.pbc_in_m1 = eapol->conf.pbc_in_m1;
847	eap_conf.server_id = eapol->conf.server_id;
848	eap_conf.server_id_len = eapol->conf.server_id_len;
849	eap_conf.erp = eapol->conf.erp;
850	eap_conf.tls_session_lifetime = eapol->conf.tls_session_lifetime;
851	sm->eap = eap_server_sm_init(sm, &eapol_cb, &eap_conf);
852	if (sm->eap == NULL) {
853		eapol_auth_free(sm);
854		return NULL;
855	}
856	sm->eap_if = eap_get_interface(sm->eap);
857
858	eapol_auth_initialize(sm);
859
860	if (identity) {
861		sm->identity = (u8 *) os_strdup(identity);
862		if (sm->identity)
863			sm->identity_len = os_strlen(identity);
864	}
865	if (radius_cui)
866		sm->radius_cui = wpabuf_alloc_copy(radius_cui,
867						   os_strlen(radius_cui));
868
869#ifndef CONFIG_NO_RADIUS
870	if (radius_gen_session_id((u8 *) &sm->acct_multi_session_id,
871				  sizeof(sm->acct_multi_session_id)) < 0) {
872		eapol_auth_free(sm);
873		return NULL;
874	}
875#endif /* CONFIG_NO_RADIUS */
876
877	return sm;
878}
879
880
881void eapol_auth_free(struct eapol_state_machine *sm)
882{
883	if (sm == NULL)
884		return;
885
886	eloop_cancel_timeout(eapol_port_timers_tick, NULL, sm);
887	eloop_cancel_timeout(eapol_sm_step_cb, sm, NULL);
888	if (sm->eap)
889		eap_server_sm_deinit(sm->eap);
890
891	wpabuf_free(sm->radius_cui);
892	os_free(sm->identity);
893	os_free(sm);
894}
895
896
897static int eapol_sm_sta_entry_alive(struct eapol_authenticator *eapol,
898				    const u8 *addr)
899{
900	return eapol->cb.sta_entry_alive(eapol->conf.ctx, addr);
901}
902
903
904static void eapol_sm_step_run(struct eapol_state_machine *sm)
905{
906	struct eapol_authenticator *eapol = sm->eapol;
907	u8 addr[ETH_ALEN];
908	unsigned int prev_auth_pae, prev_be_auth, prev_reauth_timer,
909		prev_auth_key_tx, prev_key_rx, prev_ctrl_dir;
910	int max_steps = 100;
911
912	os_memcpy(addr, sm->addr, ETH_ALEN);
913
914	/*
915	 * Allow EAPOL state machines to run as long as there are state
916	 * changes, but exit and return here through event loop if more than
917	 * 100 steps is needed as a precaution against infinite loops inside
918	 * eloop callback.
919	 */
920restart:
921	prev_auth_pae = sm->auth_pae_state;
922	prev_be_auth = sm->be_auth_state;
923	prev_reauth_timer = sm->reauth_timer_state;
924	prev_auth_key_tx = sm->auth_key_tx_state;
925	prev_key_rx = sm->key_rx_state;
926	prev_ctrl_dir = sm->ctrl_dir_state;
927
928	SM_STEP_RUN(AUTH_PAE);
929	if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
930		SM_STEP_RUN(BE_AUTH);
931	if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
932		SM_STEP_RUN(REAUTH_TIMER);
933	if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
934		SM_STEP_RUN(AUTH_KEY_TX);
935	if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
936		SM_STEP_RUN(KEY_RX);
937	if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
938		SM_STEP_RUN(CTRL_DIR);
939
940	if (prev_auth_pae != sm->auth_pae_state ||
941	    prev_be_auth != sm->be_auth_state ||
942	    prev_reauth_timer != sm->reauth_timer_state ||
943	    prev_auth_key_tx != sm->auth_key_tx_state ||
944	    prev_key_rx != sm->key_rx_state ||
945	    prev_ctrl_dir != sm->ctrl_dir_state) {
946		if (--max_steps > 0)
947			goto restart;
948		/* Re-run from eloop timeout */
949		eapol_auth_step(sm);
950		return;
951	}
952
953	if (eapol_sm_sta_entry_alive(eapol, addr) && sm->eap) {
954		if (eap_server_sm_step(sm->eap)) {
955			if (--max_steps > 0)
956				goto restart;
957			/* Re-run from eloop timeout */
958			eapol_auth_step(sm);
959			return;
960		}
961
962		/* TODO: find a better location for this */
963		if (sm->eap_if->aaaEapResp) {
964			sm->eap_if->aaaEapResp = FALSE;
965			if (sm->eap_if->aaaEapRespData == NULL) {
966				wpa_printf(MSG_DEBUG, "EAPOL: aaaEapResp set, "
967					   "but no aaaEapRespData available");
968				return;
969			}
970			sm->eapol->cb.aaa_send(
971				sm->eapol->conf.ctx, sm->sta,
972				wpabuf_head(sm->eap_if->aaaEapRespData),
973				wpabuf_len(sm->eap_if->aaaEapRespData));
974		}
975	}
976
977	if (eapol_sm_sta_entry_alive(eapol, addr))
978		sm->eapol->cb.eapol_event(sm->eapol->conf.ctx, sm->sta,
979					  EAPOL_AUTH_SM_CHANGE);
980}
981
982
983static void eapol_sm_step_cb(void *eloop_ctx, void *timeout_ctx)
984{
985	struct eapol_state_machine *sm = eloop_ctx;
986	eapol_sm_step_run(sm);
987}
988
989
990/**
991 * eapol_auth_step - Advance EAPOL state machines
992 * @sm: EAPOL state machine
993 *
994 * This function is called to advance EAPOL state machines after any change
995 * that could affect their state.
996 */
997void eapol_auth_step(struct eapol_state_machine *sm)
998{
999	/*
1000	 * Run eapol_sm_step_run from a registered timeout to make sure that
1001	 * other possible timeouts/events are processed and to avoid long
1002	 * function call chains.
1003	 */
1004
1005	eloop_register_timeout(0, 0, eapol_sm_step_cb, sm, NULL);
1006}
1007
1008
1009static void eapol_auth_initialize(struct eapol_state_machine *sm)
1010{
1011	sm->initializing = TRUE;
1012	/* Initialize the state machines by asserting initialize and then
1013	 * deasserting it after one step */
1014	sm->initialize = TRUE;
1015	eapol_sm_step_run(sm);
1016	sm->initialize = FALSE;
1017	eapol_sm_step_run(sm);
1018	sm->initializing = FALSE;
1019
1020	/* Start one second tick for port timers state machine */
1021	eloop_cancel_timeout(eapol_port_timers_tick, NULL, sm);
1022	eloop_register_timeout(1, 0, eapol_port_timers_tick, NULL, sm);
1023}
1024
1025
1026static int eapol_sm_get_eap_user(void *ctx, const u8 *identity,
1027				 size_t identity_len, int phase2,
1028				 struct eap_user *user)
1029{
1030	struct eapol_state_machine *sm = ctx;
1031	int ret;
1032
1033	ret = sm->eapol->cb.get_eap_user(sm->eapol->conf.ctx, identity,
1034					 identity_len, phase2, user);
1035	if (user->remediation)
1036		sm->remediation = 1;
1037	return ret;
1038}
1039
1040
1041static const char * eapol_sm_get_eap_req_id_text(void *ctx, size_t *len)
1042{
1043	struct eapol_state_machine *sm = ctx;
1044	*len = sm->eapol->conf.eap_req_id_text_len;
1045	return sm->eapol->conf.eap_req_id_text;
1046}
1047
1048
1049static int eapol_sm_get_erp_send_reauth_start(void *ctx)
1050{
1051	struct eapol_state_machine *sm = ctx;
1052	return sm->eapol->conf.erp_send_reauth_start;
1053}
1054
1055
1056static const char * eapol_sm_get_erp_domain(void *ctx)
1057{
1058	struct eapol_state_machine *sm = ctx;
1059	return sm->eapol->conf.erp_domain;
1060}
1061
1062
1063static struct eap_server_erp_key * eapol_sm_erp_get_key(void *ctx,
1064							const char *keyname)
1065{
1066	struct eapol_state_machine *sm = ctx;
1067	return sm->eapol->cb.erp_get_key(sm->eapol->conf.ctx, keyname);
1068}
1069
1070
1071static int eapol_sm_erp_add_key(void *ctx, struct eap_server_erp_key *erp)
1072{
1073	struct eapol_state_machine *sm = ctx;
1074	return sm->eapol->cb.erp_add_key(sm->eapol->conf.ctx, erp);
1075}
1076
1077
1078static const struct eapol_callbacks eapol_cb =
1079{
1080	eapol_sm_get_eap_user,
1081	eapol_sm_get_eap_req_id_text,
1082	NULL,
1083	eapol_sm_get_erp_send_reauth_start,
1084	eapol_sm_get_erp_domain,
1085	eapol_sm_erp_get_key,
1086	eapol_sm_erp_add_key,
1087};
1088
1089
1090int eapol_auth_eap_pending_cb(struct eapol_state_machine *sm, void *ctx)
1091{
1092	if (sm == NULL || ctx == NULL || ctx != sm->eap)
1093		return -1;
1094
1095	eap_sm_pending_cb(sm->eap);
1096	eapol_auth_step(sm);
1097
1098	return 0;
1099}
1100
1101
1102void eapol_auth_reauthenticate(struct eapol_state_machine *sm)
1103{
1104	wpa_printf(MSG_DEBUG, "EAPOL: External reauthentication trigger for "
1105		   MACSTR, MAC2STR(sm->addr));
1106	sm->reAuthenticate = TRUE;
1107	eapol_auth_step(sm);
1108}
1109
1110
1111int eapol_auth_set_conf(struct eapol_state_machine *sm, const char *param,
1112			const char *value)
1113{
1114	wpa_printf(MSG_DEBUG, "EAPOL: External configuration operation for "
1115		   MACSTR " - param=%s value=%s",
1116		   MAC2STR(sm->addr), param, value);
1117
1118	if (os_strcasecmp(param, "AdminControlledDirections") == 0) {
1119		if (os_strcmp(value, "Both") == 0)
1120			sm->adminControlledDirections = Both;
1121		else if (os_strcmp(value, "In") == 0)
1122			sm->adminControlledDirections = In;
1123		else
1124			return -1;
1125		eapol_auth_step(sm);
1126		return 0;
1127	}
1128
1129	if (os_strcasecmp(param, "AdminControlledPortControl") == 0) {
1130		if (os_strcmp(value, "ForceAuthorized") == 0)
1131			sm->portControl = ForceAuthorized;
1132		else if (os_strcmp(value, "ForceUnauthorized") == 0)
1133			sm->portControl = ForceUnauthorized;
1134		else if (os_strcmp(value, "Auto") == 0)
1135			sm->portControl = Auto;
1136		else
1137			return -1;
1138		eapol_auth_step(sm);
1139		return 0;
1140	}
1141
1142	if (os_strcasecmp(param, "quietPeriod") == 0) {
1143		sm->quietPeriod = atoi(value);
1144		return 0;
1145	}
1146
1147	if (os_strcasecmp(param, "serverTimeout") == 0) {
1148		sm->serverTimeout = atoi(value);
1149		return 0;
1150	}
1151
1152	if (os_strcasecmp(param, "reAuthPeriod") == 0) {
1153		sm->reAuthPeriod = atoi(value);
1154		return 0;
1155	}
1156
1157	if (os_strcasecmp(param, "reAuthEnabled") == 0) {
1158		if (os_strcmp(value, "TRUE") == 0)
1159			sm->reAuthEnabled = TRUE;
1160		else if (os_strcmp(value, "FALSE") == 0)
1161			sm->reAuthEnabled = FALSE;
1162		else
1163			return -1;
1164		eapol_auth_step(sm);
1165		return 0;
1166	}
1167
1168	if (os_strcasecmp(param, "KeyTransmissionEnabled") == 0) {
1169		if (os_strcmp(value, "TRUE") == 0)
1170			sm->keyTxEnabled = TRUE;
1171		else if (os_strcmp(value, "FALSE") == 0)
1172			sm->keyTxEnabled = FALSE;
1173		else
1174			return -1;
1175		eapol_auth_step(sm);
1176		return 0;
1177	}
1178
1179	return -1;
1180}
1181
1182
1183static int eapol_auth_conf_clone(struct eapol_auth_config *dst,
1184				 struct eapol_auth_config *src)
1185{
1186	dst->ctx = src->ctx;
1187	dst->eap_reauth_period = src->eap_reauth_period;
1188	dst->wpa = src->wpa;
1189	dst->individual_wep_key_len = src->individual_wep_key_len;
1190	dst->eap_server = src->eap_server;
1191	dst->ssl_ctx = src->ssl_ctx;
1192	dst->msg_ctx = src->msg_ctx;
1193	dst->eap_sim_db_priv = src->eap_sim_db_priv;
1194	os_free(dst->eap_req_id_text);
1195	dst->pwd_group = src->pwd_group;
1196	dst->pbc_in_m1 = src->pbc_in_m1;
1197	dst->server_id = src->server_id;
1198	dst->server_id_len = src->server_id_len;
1199	if (src->eap_req_id_text) {
1200		dst->eap_req_id_text = os_malloc(src->eap_req_id_text_len);
1201		if (dst->eap_req_id_text == NULL)
1202			return -1;
1203		os_memcpy(dst->eap_req_id_text, src->eap_req_id_text,
1204			  src->eap_req_id_text_len);
1205		dst->eap_req_id_text_len = src->eap_req_id_text_len;
1206	} else {
1207		dst->eap_req_id_text = NULL;
1208		dst->eap_req_id_text_len = 0;
1209	}
1210	if (src->pac_opaque_encr_key) {
1211		dst->pac_opaque_encr_key = os_malloc(16);
1212		if (dst->pac_opaque_encr_key == NULL)
1213			goto fail;
1214		os_memcpy(dst->pac_opaque_encr_key, src->pac_opaque_encr_key,
1215			  16);
1216	} else
1217		dst->pac_opaque_encr_key = NULL;
1218	if (src->eap_fast_a_id) {
1219		dst->eap_fast_a_id = os_malloc(src->eap_fast_a_id_len);
1220		if (dst->eap_fast_a_id == NULL)
1221			goto fail;
1222		os_memcpy(dst->eap_fast_a_id, src->eap_fast_a_id,
1223			  src->eap_fast_a_id_len);
1224		dst->eap_fast_a_id_len = src->eap_fast_a_id_len;
1225	} else
1226		dst->eap_fast_a_id = NULL;
1227	if (src->eap_fast_a_id_info) {
1228		dst->eap_fast_a_id_info = os_strdup(src->eap_fast_a_id_info);
1229		if (dst->eap_fast_a_id_info == NULL)
1230			goto fail;
1231	} else
1232		dst->eap_fast_a_id_info = NULL;
1233	dst->eap_fast_prov = src->eap_fast_prov;
1234	dst->pac_key_lifetime = src->pac_key_lifetime;
1235	dst->pac_key_refresh_time = src->pac_key_refresh_time;
1236	dst->eap_sim_aka_result_ind = src->eap_sim_aka_result_ind;
1237	dst->tnc = src->tnc;
1238	dst->wps = src->wps;
1239	dst->fragment_size = src->fragment_size;
1240
1241	os_free(dst->erp_domain);
1242	if (src->erp_domain) {
1243		dst->erp_domain = os_strdup(src->erp_domain);
1244		if (dst->erp_domain == NULL)
1245			goto fail;
1246	} else {
1247		dst->erp_domain = NULL;
1248	}
1249	dst->erp_send_reauth_start = src->erp_send_reauth_start;
1250	dst->erp = src->erp;
1251	dst->tls_session_lifetime = src->tls_session_lifetime;
1252
1253	return 0;
1254
1255fail:
1256	eapol_auth_conf_free(dst);
1257	return -1;
1258}
1259
1260
1261static void eapol_auth_conf_free(struct eapol_auth_config *conf)
1262{
1263	os_free(conf->eap_req_id_text);
1264	conf->eap_req_id_text = NULL;
1265	os_free(conf->pac_opaque_encr_key);
1266	conf->pac_opaque_encr_key = NULL;
1267	os_free(conf->eap_fast_a_id);
1268	conf->eap_fast_a_id = NULL;
1269	os_free(conf->eap_fast_a_id_info);
1270	conf->eap_fast_a_id_info = NULL;
1271	os_free(conf->erp_domain);
1272	conf->erp_domain = NULL;
1273}
1274
1275
1276struct eapol_authenticator * eapol_auth_init(struct eapol_auth_config *conf,
1277					     struct eapol_auth_cb *cb)
1278{
1279	struct eapol_authenticator *eapol;
1280
1281	eapol = os_zalloc(sizeof(*eapol));
1282	if (eapol == NULL)
1283		return NULL;
1284
1285	if (eapol_auth_conf_clone(&eapol->conf, conf) < 0) {
1286		os_free(eapol);
1287		return NULL;
1288	}
1289
1290	if (conf->individual_wep_key_len > 0) {
1291		/* use key0 in individual key and key1 in broadcast key */
1292		eapol->default_wep_key_idx = 1;
1293	}
1294
1295	eapol->cb.eapol_send = cb->eapol_send;
1296	eapol->cb.aaa_send = cb->aaa_send;
1297	eapol->cb.finished = cb->finished;
1298	eapol->cb.get_eap_user = cb->get_eap_user;
1299	eapol->cb.sta_entry_alive = cb->sta_entry_alive;
1300	eapol->cb.logger = cb->logger;
1301	eapol->cb.set_port_authorized = cb->set_port_authorized;
1302	eapol->cb.abort_auth = cb->abort_auth;
1303	eapol->cb.tx_key = cb->tx_key;
1304	eapol->cb.eapol_event = cb->eapol_event;
1305	eapol->cb.erp_get_key = cb->erp_get_key;
1306	eapol->cb.erp_add_key = cb->erp_add_key;
1307
1308	return eapol;
1309}
1310
1311
1312void eapol_auth_deinit(struct eapol_authenticator *eapol)
1313{
1314	if (eapol == NULL)
1315		return;
1316
1317	eapol_auth_conf_free(&eapol->conf);
1318	os_free(eapol->default_wep_key);
1319	os_free(eapol);
1320}
1321