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 #ifndef EXT_CODE_CROP
781 const char *identity, const char *radius_cui)
782 #else
783 const char *identity)
784 #endif
785 {
786 struct eapol_state_machine *sm;
787 struct eap_session_data eap_sess;
788
789 if (eapol == NULL)
790 return NULL;
791
792 sm = os_zalloc(sizeof(*sm));
793 if (sm == NULL) {
794 wpa_printf(MSG_DEBUG, "IEEE 802.1X state machine allocation "
795 "failed");
796 return NULL;
797 }
798 #ifndef EXT_CODE_CROP
799 sm->radius_identifier = -1;
800 #endif /* EXT_CODE_CROP */
801 os_memcpy(sm->addr, addr, ETH_ALEN);
802 sm->flags = flags;
803
804 sm->eapol = eapol;
805 sm->sta = sta_ctx;
806
807 /* Set default values for state machine constants */
808 sm->auth_pae_state = AUTH_PAE_INITIALIZE;
809 sm->quietPeriod = AUTH_PAE_DEFAULT_quietPeriod;
810 sm->reAuthMax = AUTH_PAE_DEFAULT_reAuthMax;
811
812 sm->be_auth_state = BE_AUTH_INITIALIZE;
813 sm->serverTimeout = BE_AUTH_DEFAULT_serverTimeout;
814
815 sm->reauth_timer_state = REAUTH_TIMER_INITIALIZE;
816 sm->reAuthPeriod = eapol->conf.eap_reauth_period;
817 sm->reAuthEnabled = eapol->conf.eap_reauth_period > 0;
818
819 sm->auth_key_tx_state = AUTH_KEY_TX_NO_KEY_TRANSMIT;
820
821 sm->key_rx_state = KEY_RX_NO_KEY_RECEIVE;
822
823 sm->ctrl_dir_state = CTRL_DIR_IN_OR_BOTH;
824
825 sm->portControl = Auto;
826 #ifndef LOS_CONFIG_HOSTAPD_SECURITY
827 #ifdef CONFIG_WEP
828 if (!eapol->conf.wpa &&
829 (eapol->default_wep_key || eapol->conf.individual_wep_key_len > 0))
830 sm->keyTxEnabled = true;
831 else
832 #endif /* CONFIG_WEP */
833 sm->keyTxEnabled = false;
834 #else
835 sm->keyTxEnabled = FALSE;
836 #endif /* LOS_CONFIG_HOSTAPD_SECURITY */
837 if (eapol->conf.wpa)
838 sm->portValid = false;
839 else
840 sm->portValid = true;
841
842 os_memset(&eap_sess, 0, sizeof(eap_sess));
843 eap_sess.assoc_wps_ie = assoc_wps_ie;
844 eap_sess.assoc_p2p_ie = assoc_p2p_ie;
845 eap_sess.peer_addr = addr;
846 sm->eap = eap_server_sm_init(sm, &eapol_cb, eapol->conf.eap_cfg,
847 &eap_sess);
848 if (sm->eap == NULL) {
849 eapol_auth_free(sm);
850 return NULL;
851 }
852 sm->eap_if = eap_get_interface(sm->eap);
853
854 eapol_auth_initialize(sm);
855
856 if (identity) {
857 sm->identity = (u8 *) os_strdup(identity);
858 if (sm->identity)
859 sm->identity_len = os_strlen(identity);
860 }
861 #ifndef EXT_CODE_CROP
862 if (radius_cui)
863 sm->radius_cui = wpabuf_alloc_copy(radius_cui,
864 os_strlen(radius_cui));
865
866 #ifndef CONFIG_NO_RADIUS
867 if (radius_gen_session_id((u8 *) &sm->acct_multi_session_id,
868 sizeof(sm->acct_multi_session_id)) < 0) {
869 eapol_auth_free(sm);
870 return NULL;
871 }
872 #endif /* CONFIG_NO_RADIUS */
873 #endif /* EXT_CODE_CROP */
874 return sm;
875 }
876
877
eapol_auth_free(struct eapol_state_machine * sm)878 void eapol_auth_free(struct eapol_state_machine *sm)
879 {
880 if (sm == NULL)
881 return;
882
883 eloop_cancel_timeout(eapol_port_timers_tick, NULL, sm);
884 eloop_cancel_timeout(eapol_sm_step_cb, sm, NULL);
885 if (sm->eap)
886 eap_server_sm_deinit(sm->eap);
887
888 #ifndef EXT_CODE_CROP
889 wpabuf_free(sm->radius_cui);
890 #endif /* EXT_CODE_CROP */
891 os_free(sm->identity);
892 os_free(sm);
893 }
894
895
eapol_sm_sta_entry_alive(struct eapol_authenticator * eapol,const u8 * addr)896 static int eapol_sm_sta_entry_alive(struct eapol_authenticator *eapol,
897 const u8 *addr)
898 {
899 return eapol->cb.sta_entry_alive(eapol->conf.ctx, addr);
900 }
901
902
eapol_sm_step_run(struct eapol_state_machine * sm)903 static void eapol_sm_step_run(struct eapol_state_machine *sm)
904 {
905 struct eapol_authenticator *eapol = sm->eapol;
906 u8 addr[ETH_ALEN];
907 unsigned int prev_auth_pae, prev_be_auth, prev_reauth_timer,
908 prev_auth_key_tx, prev_key_rx, prev_ctrl_dir;
909 int max_steps = 100;
910
911 os_memcpy(addr, sm->addr, ETH_ALEN);
912
913 /*
914 * Allow EAPOL state machines to run as long as there are state
915 * changes, but exit and return here through event loop if more than
916 * 100 steps is needed as a precaution against infinite loops inside
917 * eloop callback.
918 */
919 restart:
920 prev_auth_pae = sm->auth_pae_state;
921 prev_be_auth = sm->be_auth_state;
922 prev_reauth_timer = sm->reauth_timer_state;
923 prev_auth_key_tx = sm->auth_key_tx_state;
924 prev_key_rx = sm->key_rx_state;
925 prev_ctrl_dir = sm->ctrl_dir_state;
926
927 SM_STEP_RUN(AUTH_PAE);
928 if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
929 SM_STEP_RUN(BE_AUTH);
930 if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
931 SM_STEP_RUN(REAUTH_TIMER);
932 #ifdef CONFIG_WEP
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 #endif /* CONFIG_WEP */
938 if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
939 SM_STEP_RUN(CTRL_DIR);
940
941 if (prev_auth_pae != sm->auth_pae_state ||
942 prev_be_auth != sm->be_auth_state ||
943 prev_reauth_timer != sm->reauth_timer_state ||
944 prev_auth_key_tx != sm->auth_key_tx_state ||
945 prev_key_rx != sm->key_rx_state ||
946 prev_ctrl_dir != sm->ctrl_dir_state) {
947 if (--max_steps > 0)
948 goto restart;
949 /* Re-run from eloop timeout */
950 eapol_auth_step(sm);
951 return;
952 }
953
954 if (eapol_sm_sta_entry_alive(eapol, addr) && sm->eap) {
955 if (eap_server_sm_step(sm->eap)) {
956 if (--max_steps > 0)
957 goto restart;
958 /* Re-run from eloop timeout */
959 eapol_auth_step(sm);
960 return;
961 }
962
963 /* TODO: find a better location for this */
964 if (sm->eap_if->aaaEapResp) {
965 sm->eap_if->aaaEapResp = false;
966 if (sm->eap_if->aaaEapRespData == NULL) {
967 wpa_printf(MSG_DEBUG, "EAPOL: aaaEapResp set, "
968 "but no aaaEapRespData available");
969 return;
970 }
971 sm->eapol->cb.aaa_send(
972 sm->eapol->conf.ctx, sm->sta,
973 wpabuf_head(sm->eap_if->aaaEapRespData),
974 wpabuf_len(sm->eap_if->aaaEapRespData));
975 }
976 }
977
978 if (eapol_sm_sta_entry_alive(eapol, addr))
979 sm->eapol->cb.eapol_event(sm->eapol->conf.ctx, sm->sta,
980 EAPOL_AUTH_SM_CHANGE);
981 }
982
983
eapol_sm_step_cb(void * eloop_ctx,void * timeout_ctx)984 static void eapol_sm_step_cb(void *eloop_ctx, void *timeout_ctx)
985 {
986 struct eapol_state_machine *sm = eloop_ctx;
987 eapol_sm_step_run(sm);
988 }
989
990
991 /**
992 * eapol_auth_step - Advance EAPOL state machines
993 * @sm: EAPOL state machine
994 *
995 * This function is called to advance EAPOL state machines after any change
996 * that could affect their state.
997 */
eapol_auth_step(struct eapol_state_machine * sm)998 void eapol_auth_step(struct eapol_state_machine *sm)
999 {
1000 /*
1001 * Run eapol_sm_step_run from a registered timeout to make sure that
1002 * other possible timeouts/events are processed and to avoid long
1003 * function call chains.
1004 */
1005
1006 eloop_register_timeout(0, 0, eapol_sm_step_cb, sm, NULL);
1007 }
1008
1009
eapol_auth_initialize(struct eapol_state_machine * sm)1010 static void eapol_auth_initialize(struct eapol_state_machine *sm)
1011 {
1012 sm->initializing = true;
1013 /* Initialize the state machines by asserting initialize and then
1014 * deasserting it after one step */
1015 sm->initialize = true;
1016 eapol_sm_step_run(sm);
1017 sm->initialize = false;
1018 eapol_sm_step_run(sm);
1019 sm->initializing = false;
1020
1021 /* Start one second tick for port timers state machine */
1022 eloop_cancel_timeout(eapol_port_timers_tick, NULL, sm);
1023 eloop_register_timeout(1, 0, eapol_port_timers_tick, NULL, sm);
1024 }
1025
1026
eapol_sm_get_eap_user(void * ctx,const u8 * identity,size_t identity_len,int phase2,struct eap_user * user)1027 static int eapol_sm_get_eap_user(void *ctx, const u8 *identity,
1028 size_t identity_len, int phase2,
1029 struct eap_user *user)
1030 {
1031 struct eapol_state_machine *sm = ctx;
1032 int ret;
1033
1034 ret = sm->eapol->cb.get_eap_user(sm->eapol->conf.ctx, identity,
1035 identity_len, phase2, user);
1036 if (user->remediation)
1037 sm->remediation = 1;
1038 return ret;
1039 }
1040
1041
eapol_sm_get_eap_req_id_text(void * ctx,size_t * len)1042 static const char * eapol_sm_get_eap_req_id_text(void *ctx, size_t *len)
1043 {
1044 struct eapol_state_machine *sm = ctx;
1045 *len = sm->eapol->conf.eap_req_id_text_len;
1046 return sm->eapol->conf.eap_req_id_text;
1047 }
1048
1049
eapol_sm_get_erp_send_reauth_start(void * ctx)1050 static int eapol_sm_get_erp_send_reauth_start(void *ctx)
1051 {
1052 struct eapol_state_machine *sm = ctx;
1053 return sm->eapol->conf.erp_send_reauth_start;
1054 }
1055
1056
eapol_sm_get_erp_domain(void * ctx)1057 static const char * eapol_sm_get_erp_domain(void *ctx)
1058 {
1059 struct eapol_state_machine *sm = ctx;
1060 return sm->eapol->conf.erp_domain;
1061 }
1062
1063
eapol_sm_erp_get_key(void * ctx,const char * keyname)1064 static struct eap_server_erp_key * eapol_sm_erp_get_key(void *ctx,
1065 const char *keyname)
1066 {
1067 struct eapol_state_machine *sm = ctx;
1068 return sm->eapol->cb.erp_get_key(sm->eapol->conf.ctx, keyname);
1069 }
1070
1071
eapol_sm_erp_add_key(void * ctx,struct eap_server_erp_key * erp)1072 static int eapol_sm_erp_add_key(void *ctx, struct eap_server_erp_key *erp)
1073 {
1074 struct eapol_state_machine *sm = ctx;
1075 return sm->eapol->cb.erp_add_key(sm->eapol->conf.ctx, erp);
1076 }
1077
1078
1079 static const struct eapol_callbacks eapol_cb =
1080 {
1081 eapol_sm_get_eap_user,
1082 #ifndef EXT_CODE_CROP
1083 eapol_sm_get_eap_req_id_text,
1084 NULL,
1085 eapol_sm_get_erp_send_reauth_start,
1086 eapol_sm_get_erp_domain,
1087 #endif /* EXT_CODE_CROP */
1088 eapol_sm_erp_get_key,
1089 eapol_sm_erp_add_key,
1090 };
1091
1092
eapol_auth_eap_pending_cb(struct eapol_state_machine * sm,void * ctx)1093 int eapol_auth_eap_pending_cb(struct eapol_state_machine *sm, void *ctx)
1094 {
1095 if (sm == NULL || ctx == NULL || ctx != sm->eap)
1096 return -1;
1097
1098 eap_sm_pending_cb(sm->eap);
1099 eapol_auth_step(sm);
1100
1101 return 0;
1102 }
1103
1104
eapol_auth_reauthenticate(struct eapol_state_machine * sm)1105 void eapol_auth_reauthenticate(struct eapol_state_machine *sm)
1106 {
1107 wpa_printf(MSG_DEBUG, "EAPOL: External reauthentication trigger for "
1108 MACSTR, MAC2STR(sm->addr));
1109 sm->reAuthenticate = true;
1110 eapol_auth_step(sm);
1111 }
1112
1113
eapol_auth_set_conf(struct eapol_state_machine * sm,const char * param,const char * value)1114 int eapol_auth_set_conf(struct eapol_state_machine *sm, const char *param,
1115 const char *value)
1116 {
1117 wpa_printf(MSG_DEBUG, "EAPOL: External configuration operation for "
1118 MACSTR " - param=%s value=%s",
1119 MAC2STR(sm->addr), param, value);
1120
1121 if (os_strcasecmp(param, "AdminControlledDirections") == 0) {
1122 if (os_strcmp(value, "Both") == 0)
1123 sm->adminControlledDirections = Both;
1124 else if (os_strcmp(value, "In") == 0)
1125 sm->adminControlledDirections = In;
1126 else
1127 return -1;
1128 eapol_auth_step(sm);
1129 return 0;
1130 }
1131
1132 if (os_strcasecmp(param, "AdminControlledPortControl") == 0) {
1133 if (os_strcmp(value, "ForceAuthorized") == 0)
1134 sm->portControl = ForceAuthorized;
1135 else if (os_strcmp(value, "ForceUnauthorized") == 0)
1136 sm->portControl = ForceUnauthorized;
1137 else if (os_strcmp(value, "Auto") == 0)
1138 sm->portControl = Auto;
1139 else
1140 return -1;
1141 eapol_auth_step(sm);
1142 return 0;
1143 }
1144
1145 if (os_strcasecmp(param, "quietPeriod") == 0) {
1146 sm->quietPeriod = atoi(value);
1147 return 0;
1148 }
1149
1150 if (os_strcasecmp(param, "serverTimeout") == 0) {
1151 sm->serverTimeout = atoi(value);
1152 return 0;
1153 }
1154
1155 if (os_strcasecmp(param, "reAuthPeriod") == 0) {
1156 sm->reAuthPeriod = atoi(value);
1157 return 0;
1158 }
1159
1160 if (os_strcasecmp(param, "reAuthEnabled") == 0) {
1161 if (os_strcmp(value, "TRUE") == 0)
1162 sm->reAuthEnabled = true;
1163 else if (os_strcmp(value, "FALSE") == 0)
1164 sm->reAuthEnabled = false;
1165 else
1166 return -1;
1167 eapol_auth_step(sm);
1168 return 0;
1169 }
1170
1171 if (os_strcasecmp(param, "KeyTransmissionEnabled") == 0) {
1172 if (os_strcmp(value, "TRUE") == 0)
1173 sm->keyTxEnabled = true;
1174 else if (os_strcmp(value, "FALSE") == 0)
1175 sm->keyTxEnabled = false;
1176 else
1177 return -1;
1178 eapol_auth_step(sm);
1179 return 0;
1180 }
1181
1182 return -1;
1183 }
1184
1185
eapol_auth_conf_clone(struct eapol_auth_config * dst,struct eapol_auth_config * src)1186 static int eapol_auth_conf_clone(struct eapol_auth_config *dst,
1187 struct eapol_auth_config *src)
1188 {
1189 dst->eap_cfg = src->eap_cfg;
1190 dst->ctx = src->ctx;
1191 dst->eap_reauth_period = src->eap_reauth_period;
1192 dst->wpa = src->wpa;
1193 #ifdef CONFIG_WEP
1194 dst->individual_wep_key_len = src->individual_wep_key_len;
1195 #endif /* CONFIG_WEP */
1196 os_free(dst->eap_req_id_text);
1197 if (src->eap_req_id_text) {
1198 dst->eap_req_id_text = os_memdup(src->eap_req_id_text,
1199 src->eap_req_id_text_len);
1200 if (dst->eap_req_id_text == NULL)
1201 return -1;
1202 dst->eap_req_id_text_len = src->eap_req_id_text_len;
1203 } else {
1204 dst->eap_req_id_text = NULL;
1205 dst->eap_req_id_text_len = 0;
1206 }
1207
1208 os_free(dst->erp_domain);
1209 if (src->erp_domain) {
1210 dst->erp_domain = os_strdup(src->erp_domain);
1211 if (dst->erp_domain == NULL)
1212 goto fail;
1213 } else {
1214 dst->erp_domain = NULL;
1215 }
1216 dst->erp_send_reauth_start = src->erp_send_reauth_start;
1217
1218 return 0;
1219
1220 fail:
1221 eapol_auth_conf_free(dst);
1222 return -1;
1223 }
1224
1225
eapol_auth_conf_free(struct eapol_auth_config * conf)1226 static void eapol_auth_conf_free(struct eapol_auth_config *conf)
1227 {
1228 os_free(conf->eap_req_id_text);
1229 conf->eap_req_id_text = NULL;
1230 os_free(conf->erp_domain);
1231 conf->erp_domain = NULL;
1232 }
1233
1234
eapol_auth_init(struct eapol_auth_config * conf,struct eapol_auth_cb * cb)1235 struct eapol_authenticator * eapol_auth_init(struct eapol_auth_config *conf,
1236 struct eapol_auth_cb *cb)
1237 {
1238 struct eapol_authenticator *eapol;
1239
1240 eapol = os_zalloc(sizeof(*eapol));
1241 if (eapol == NULL)
1242 return NULL;
1243
1244 if (eapol_auth_conf_clone(&eapol->conf, conf) < 0) {
1245 os_free(eapol);
1246 return NULL;
1247 }
1248
1249 #ifdef CONFIG_WEP
1250 if (conf->individual_wep_key_len > 0) {
1251 /* use key0 in individual key and key1 in broadcast key */
1252 eapol->default_wep_key_idx = 1;
1253 }
1254 #endif /* CONFIG_WEP */
1255
1256 eapol->cb.eapol_send = cb->eapol_send;
1257 eapol->cb.aaa_send = cb->aaa_send;
1258 eapol->cb.finished = cb->finished;
1259 eapol->cb.get_eap_user = cb->get_eap_user;
1260 eapol->cb.sta_entry_alive = cb->sta_entry_alive;
1261 eapol->cb.logger = cb->logger;
1262 eapol->cb.set_port_authorized = cb->set_port_authorized;
1263 eapol->cb.abort_auth = cb->abort_auth;
1264 eapol->cb.tx_key = cb->tx_key;
1265 eapol->cb.eapol_event = cb->eapol_event;
1266 eapol->cb.erp_get_key = cb->erp_get_key;
1267 eapol->cb.erp_add_key = cb->erp_add_key;
1268
1269 return eapol;
1270 }
1271
1272
eapol_auth_deinit(struct eapol_authenticator * eapol)1273 void eapol_auth_deinit(struct eapol_authenticator *eapol)
1274 {
1275 if (eapol == NULL)
1276 return;
1277
1278 eapol_auth_conf_free(&eapol->conf);
1279 #ifdef CONFIG_WEP
1280 os_free(eapol->default_wep_key);
1281 #endif /* CONFIG_WEP */
1282 os_free(eapol);
1283 }
1284