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