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
eapol_auth_vlogger(struct eapol_authenticator * eapol,const u8 * addr,eapol_logger_level level,const char * fmt,...)59 static 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
eapol_auth_tx_canned_eap(struct eapol_state_machine * sm,int success)85 static 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
eapol_auth_tx_req(struct eapol_state_machine * sm)106 static 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 */
eapol_port_timers_tick(void * eloop_ctx,void * timeout_ctx)148 static 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
SM_STATE(AUTH_PAE,INITIALIZE)197 SM_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
SM_STATE(AUTH_PAE,DISCONNECTED)216 SM_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
SM_STATE(AUTH_PAE,RESTART)241 SM_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
SM_STATE(AUTH_PAE,CONNECTING)258 SM_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
SM_STATE(AUTH_PAE,HELD)270 SM_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
SM_STATE(AUTH_PAE,AUTHENTICATED)297 SM_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
SM_STATE(AUTH_PAE,AUTHENTICATING)323 SM_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
SM_STATE(AUTH_PAE,ABORTING)337 SM_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
SM_STATE(AUTH_PAE,FORCE_AUTH)356 SM_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
SM_STATE(AUTH_PAE,FORCE_UNAUTH)368 SM_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
SM_STEP(AUTH_PAE)380 SM_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
SM_STATE(BE_AUTH,INITIALIZE)455 SM_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
SM_STATE(BE_AUTH,REQUEST)465 SM_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
SM_STATE(BE_AUTH,RESPONSE)488 SM_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
SM_STATE(BE_AUTH,SUCCESS)502 SM_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
SM_STATE(BE_AUTH,FAIL)512 SM_STATE(BE_AUTH, FAIL)
513 {
514 SM_ENTRY_MA(BE_AUTH, FAIL, be_auth);
515
516 txReq();
517 sm->authFail = TRUE;
518 }
519
520
SM_STATE(BE_AUTH,TIMEOUT)521 SM_STATE(BE_AUTH, TIMEOUT)
522 {
523 SM_ENTRY_MA(BE_AUTH, TIMEOUT, be_auth);
524
525 sm->authTimeout = TRUE;
526 }
527
528
SM_STATE(BE_AUTH,IDLE)529 SM_STATE(BE_AUTH, IDLE)
530 {
531 SM_ENTRY_MA(BE_AUTH, IDLE, be_auth);
532
533 sm->authStart = FALSE;
534 }
535
536
SM_STATE(BE_AUTH,IGNORE)537 SM_STATE(BE_AUTH, IGNORE)
538 {
539 SM_ENTRY_MA(BE_AUTH, IGNORE, be_auth);
540
541 sm->eap_if->eapNoReq = FALSE;
542 }
543
544
SM_STEP(BE_AUTH)545 SM_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
SM_STATE(REAUTH_TIMER,INITIALIZE)612 SM_STATE(REAUTH_TIMER, INITIALIZE)
613 {
614 SM_ENTRY_MA(REAUTH_TIMER, INITIALIZE, reauth_timer);
615
616 sm->reAuthWhen = sm->reAuthPeriod;
617 }
618
619
SM_STATE(REAUTH_TIMER,REAUTHENTICATE)620 SM_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
SM_STEP(REAUTH_TIMER)630 SM_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
SM_STATE(AUTH_KEY_TX,NO_KEY_TRANSMIT)653 SM_STATE(AUTH_KEY_TX, NO_KEY_TRANSMIT)
654 {
655 SM_ENTRY_MA(AUTH_KEY_TX, NO_KEY_TRANSMIT, auth_key_tx);
656 }
657
658
SM_STATE(AUTH_KEY_TX,KEY_TRANSMIT)659 SM_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
SM_STEP(AUTH_KEY_TX)669 SM_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
SM_STATE(KEY_RX,NO_KEY_RECEIVE)695 SM_STATE(KEY_RX, NO_KEY_RECEIVE)
696 {
697 SM_ENTRY_MA(KEY_RX, NO_KEY_RECEIVE, key_rx);
698 }
699
700
SM_STATE(KEY_RX,KEY_RECEIVE)701 SM_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
SM_STEP(KEY_RX)710 SM_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
SM_STATE(CTRL_DIR,FORCE_BOTH)733 SM_STATE(CTRL_DIR, FORCE_BOTH)
734 {
735 SM_ENTRY_MA(CTRL_DIR, FORCE_BOTH, ctrl_dir);
736 sm->operControlledDirections = Both;
737 }
738
739
SM_STATE(CTRL_DIR,IN_OR_BOTH)740 SM_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
SM_STEP(CTRL_DIR)747 SM_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
771 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)772 eapol_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
eapol_auth_free(struct eapol_state_machine * sm)881 void 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
eapol_sm_sta_entry_alive(struct eapol_authenticator * eapol,const u8 * addr)897 static 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
eapol_sm_step_run(struct eapol_state_machine * sm)904 static 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 */
920 restart:
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
eapol_sm_step_cb(void * eloop_ctx,void * timeout_ctx)983 static 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 */
eapol_auth_step(struct eapol_state_machine * sm)997 void 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
eapol_auth_initialize(struct eapol_state_machine * sm)1009 static 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
eapol_sm_get_eap_user(void * ctx,const u8 * identity,size_t identity_len,int phase2,struct eap_user * user)1026 static 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
eapol_sm_get_eap_req_id_text(void * ctx,size_t * len)1041 static 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
eapol_sm_get_erp_send_reauth_start(void * ctx)1049 static 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
eapol_sm_get_erp_domain(void * ctx)1056 static 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
eapol_sm_erp_get_key(void * ctx,const char * keyname)1063 static 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
eapol_sm_erp_add_key(void * ctx,struct eap_server_erp_key * erp)1071 static 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
1078 static 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
eapol_auth_eap_pending_cb(struct eapol_state_machine * sm,void * ctx)1090 int 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
eapol_auth_reauthenticate(struct eapol_state_machine * sm)1102 void 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
eapol_auth_set_conf(struct eapol_state_machine * sm,const char * param,const char * value)1111 int 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
eapol_auth_conf_clone(struct eapol_auth_config * dst,struct eapol_auth_config * src)1183 static 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
1255 fail:
1256 eapol_auth_conf_free(dst);
1257 return -1;
1258 }
1259
1260
eapol_auth_conf_free(struct eapol_auth_config * conf)1261 static 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
eapol_auth_init(struct eapol_auth_config * conf,struct eapol_auth_cb * cb)1276 struct 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
eapol_auth_deinit(struct eapol_authenticator * eapol)1312 void 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