Line data Source code
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 :
49 17358 : static void eapol_auth_logger(struct eapol_authenticator *eapol,
50 : const u8 *addr, eapol_logger_level level,
51 : const char *txt)
52 : {
53 17358 : if (eapol->cb.logger == NULL)
54 17358 : return;
55 17358 : eapol->cb.logger(eapol->conf.ctx, addr, level, txt);
56 : }
57 :
58 :
59 17362 : 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 17362 : if (eapol->cb.logger == NULL)
68 6 : return;
69 :
70 17362 : maxlen = os_strlen(fmt) + 100;
71 17362 : format = os_malloc(maxlen);
72 17362 : if (!format)
73 6 : return;
74 :
75 17356 : va_start(ap, fmt);
76 17356 : vsnprintf(format, maxlen, fmt, ap);
77 17356 : va_end(ap);
78 :
79 17356 : eapol_auth_logger(eapol, addr, level, format);
80 :
81 17356 : os_free(format);
82 : }
83 :
84 :
85 2 : static void eapol_auth_tx_canned_eap(struct eapol_state_machine *sm,
86 : int success)
87 : {
88 : struct eap_hdr eap;
89 :
90 2 : os_memset(&eap, 0, sizeof(eap));
91 :
92 2 : eap.code = success ? EAP_CODE_SUCCESS : EAP_CODE_FAILURE;
93 2 : eap.identifier = ++sm->last_eap_id;
94 2 : eap.length = host_to_be16(sizeof(eap));
95 :
96 2 : eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_DEBUG,
97 : "Sending canned EAP packet %s (identifier %d)",
98 2 : success ? "SUCCESS" : "FAILURE", eap.identifier);
99 2 : sm->eapol->cb.eapol_send(sm->eapol->conf.ctx, sm->sta,
100 : IEEE802_1X_TYPE_EAP_PACKET,
101 : (u8 *) &eap, sizeof(eap));
102 2 : sm->dot1xAuthEapolFramesTx++;
103 2 : }
104 :
105 :
106 14783 : static void eapol_auth_tx_req(struct eapol_state_machine *sm)
107 : {
108 29564 : if (sm->eap_if->eapReqData == NULL ||
109 14781 : wpabuf_len(sm->eap_if->eapReqData) < sizeof(struct eap_hdr)) {
110 2 : 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 2 : return;
115 : }
116 :
117 14781 : if (sm->flags & EAPOL_SM_WAIT_START) {
118 18 : wpa_printf(MSG_DEBUG, "EAPOL: Drop EAPOL TX to " MACSTR
119 : " while waiting for EAPOL-Start",
120 18 : MAC2STR(sm->addr));
121 3 : return;
122 : }
123 :
124 14778 : sm->last_eap_id = eap_get_id(sm->eap_if->eapReqData);
125 14778 : eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_DEBUG,
126 : "Sending EAP Packet (identifier %d)",
127 14778 : sm->last_eap_id);
128 44334 : sm->eapol->cb.eapol_send(sm->eapol->conf.ctx, sm->sta,
129 : IEEE802_1X_TYPE_EAP_PACKET,
130 14778 : wpabuf_head(sm->eap_if->eapReqData),
131 14778 : wpabuf_len(sm->eap_if->eapReqData));
132 14778 : sm->dot1xAuthEapolFramesTx++;
133 14778 : if (eap_get_type(sm->eap_if->eapReqData) == EAP_TYPE_IDENTITY)
134 3014 : sm->dot1xAuthEapolReqIdFramesTx++;
135 : else
136 11764 : 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 : */
148 484 : static void eapol_port_timers_tick(void *eloop_ctx, void *timeout_ctx)
149 : {
150 484 : struct eapol_state_machine *state = timeout_ctx;
151 :
152 484 : if (state->aWhile > 0) {
153 451 : state->aWhile--;
154 451 : if (state->aWhile == 0) {
155 6 : wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR
156 : " - aWhile --> 0",
157 6 : MAC2STR(state->addr));
158 : }
159 : }
160 :
161 484 : if (state->quietWhile > 0) {
162 42 : state->quietWhile--;
163 42 : if (state->quietWhile == 0) {
164 0 : wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR
165 : " - quietWhile --> 0",
166 0 : MAC2STR(state->addr));
167 : }
168 : }
169 :
170 484 : if (state->reAuthWhen > 0) {
171 484 : state->reAuthWhen--;
172 484 : if (state->reAuthWhen == 0) {
173 6 : wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR
174 : " - reAuthWhen --> 0",
175 6 : MAC2STR(state->addr));
176 : }
177 : }
178 :
179 484 : if (state->eap_if->retransWhile > 0) {
180 369 : state->eap_if->retransWhile--;
181 369 : if (state->eap_if->retransWhile == 0) {
182 408 : wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR
183 : " - (EAP) retransWhile --> 0",
184 408 : MAC2STR(state->addr));
185 : }
186 : }
187 :
188 484 : eapol_sm_step_run(state);
189 :
190 484 : eloop_register_timeout(1, 0, eapol_port_timers_tick, eloop_ctx, state);
191 484 : }
192 :
193 :
194 :
195 : /* Authenticator PAE state machine */
196 :
197 11957 : SM_STATE(AUTH_PAE, INITIALIZE)
198 : {
199 11957 : SM_ENTRY_MA(AUTH_PAE, INITIALIZE, auth_pae);
200 11957 : 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 11957 : sm->keyRun = FALSE;
213 11957 : }
214 :
215 :
216 2831 : SM_STATE(AUTH_PAE, DISCONNECTED)
217 : {
218 2831 : int from_initialize = sm->auth_pae_state == AUTH_PAE_INITIALIZE;
219 :
220 2831 : if (sm->eapolLogoff) {
221 2 : if (sm->auth_pae_state == AUTH_PAE_CONNECTING)
222 0 : sm->authEapLogoffsWhileConnecting++;
223 2 : else if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATED)
224 2 : sm->authAuthEapLogoffWhileAuthenticated++;
225 : }
226 :
227 2831 : SM_ENTRY_MA(AUTH_PAE, DISCONNECTED, auth_pae);
228 :
229 2831 : sm->authPortStatus = Unauthorized;
230 2831 : setPortUnauthorized();
231 2831 : sm->reAuthCount = 0;
232 2831 : sm->eapolLogoff = FALSE;
233 2831 : if (!from_initialize) {
234 12 : sm->eapol->cb.finished(sm->eapol->conf.ctx, sm->sta, 0,
235 6 : sm->flags & EAPOL_SM_PREAUTH,
236 : sm->remediation);
237 : }
238 2831 : }
239 :
240 :
241 3007 : SM_STATE(AUTH_PAE, RESTART)
242 : {
243 3007 : if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATED) {
244 111 : if (sm->reAuthenticate)
245 13 : sm->authAuthReauthsWhileAuthenticated++;
246 111 : if (sm->eapolStart)
247 98 : sm->authAuthEapStartsWhileAuthenticated++;
248 111 : if (sm->eapolLogoff)
249 0 : sm->authAuthEapLogoffWhileAuthenticated++;
250 : }
251 :
252 3007 : SM_ENTRY_MA(AUTH_PAE, RESTART, auth_pae);
253 :
254 3007 : sm->eap_if->eapRestart = TRUE;
255 3007 : }
256 :
257 :
258 3007 : SM_STATE(AUTH_PAE, CONNECTING)
259 : {
260 3007 : if (sm->auth_pae_state != AUTH_PAE_CONNECTING)
261 3007 : sm->authEntersConnecting++;
262 :
263 3007 : SM_ENTRY_MA(AUTH_PAE, CONNECTING, auth_pae);
264 :
265 3007 : sm->reAuthenticate = FALSE;
266 3007 : sm->reAuthCount++;
267 3007 : }
268 :
269 :
270 753 : SM_STATE(AUTH_PAE, HELD)
271 : {
272 753 : if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATING && sm->authFail)
273 753 : sm->authAuthFailWhileAuthenticating++;
274 :
275 753 : SM_ENTRY_MA(AUTH_PAE, HELD, auth_pae);
276 :
277 753 : sm->authPortStatus = Unauthorized;
278 753 : setPortUnauthorized();
279 753 : sm->quietWhile = sm->quietPeriod;
280 753 : sm->eapolLogoff = FALSE;
281 :
282 1506 : eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_WARNING,
283 : "authentication failed - EAP type: %d (%s)",
284 753 : sm->eap_type_authsrv,
285 753 : eap_server_get_name(0, sm->eap_type_authsrv));
286 753 : if (sm->eap_type_authsrv != sm->eap_type_supp) {
287 1150 : eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_INFO,
288 : "Supplicant used different EAP type: "
289 575 : "%d (%s)", sm->eap_type_supp,
290 575 : eap_server_get_name(0, sm->eap_type_supp));
291 : }
292 1506 : sm->eapol->cb.finished(sm->eapol->conf.ctx, sm->sta, 0,
293 753 : sm->flags & EAPOL_SM_PREAUTH, sm->remediation);
294 753 : }
295 :
296 :
297 1254 : SM_STATE(AUTH_PAE, AUTHENTICATED)
298 : {
299 1254 : char *extra = "";
300 :
301 1254 : if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATING && sm->authSuccess)
302 1254 : sm->authAuthSuccessesWhileAuthenticating++;
303 :
304 1254 : SM_ENTRY_MA(AUTH_PAE, AUTHENTICATED, auth_pae);
305 :
306 1254 : sm->authPortStatus = Authorized;
307 1254 : setPortAuthorized();
308 1254 : sm->reAuthCount = 0;
309 1254 : if (sm->flags & EAPOL_SM_PREAUTH)
310 7 : extra = " (pre-authentication)";
311 1247 : else if (sm->flags & EAPOL_SM_FROM_PMKSA_CACHE)
312 39 : extra = " (PMKSA cache)";
313 2508 : eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_INFO,
314 : "authenticated - EAP type: %d (%s)%s",
315 1254 : sm->eap_type_authsrv,
316 1254 : eap_server_get_name(0, sm->eap_type_authsrv),
317 : extra);
318 2508 : sm->eapol->cb.finished(sm->eapol->conf.ctx, sm->sta, 1,
319 1254 : sm->flags & EAPOL_SM_PREAUTH, sm->remediation);
320 1254 : }
321 :
322 :
323 3003 : SM_STATE(AUTH_PAE, AUTHENTICATING)
324 : {
325 3003 : SM_ENTRY_MA(AUTH_PAE, AUTHENTICATING, auth_pae);
326 :
327 3003 : sm->eapolStart = FALSE;
328 3003 : sm->authSuccess = FALSE;
329 3003 : sm->authFail = FALSE;
330 3003 : sm->authTimeout = FALSE;
331 3003 : sm->authStart = TRUE;
332 3003 : sm->keyRun = FALSE;
333 3003 : sm->keyDone = FALSE;
334 3003 : }
335 :
336 :
337 71 : SM_STATE(AUTH_PAE, ABORTING)
338 : {
339 71 : if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATING) {
340 71 : if (sm->authTimeout)
341 1 : sm->authAuthTimeoutsWhileAuthenticating++;
342 71 : if (sm->eapolStart)
343 70 : sm->authAuthEapStartsWhileAuthenticating++;
344 71 : if (sm->eapolLogoff)
345 0 : sm->authAuthEapLogoffWhileAuthenticating++;
346 : }
347 :
348 71 : SM_ENTRY_MA(AUTH_PAE, ABORTING, auth_pae);
349 :
350 71 : sm->authAbort = TRUE;
351 71 : sm->keyRun = FALSE;
352 71 : sm->keyDone = FALSE;
353 71 : }
354 :
355 :
356 1 : SM_STATE(AUTH_PAE, FORCE_AUTH)
357 : {
358 1 : SM_ENTRY_MA(AUTH_PAE, FORCE_AUTH, auth_pae);
359 :
360 1 : sm->authPortStatus = Authorized;
361 1 : setPortAuthorized();
362 1 : sm->portMode = ForceAuthorized;
363 1 : sm->eapolStart = FALSE;
364 1 : txCannedSuccess();
365 1 : }
366 :
367 :
368 1 : SM_STATE(AUTH_PAE, FORCE_UNAUTH)
369 : {
370 1 : SM_ENTRY_MA(AUTH_PAE, FORCE_UNAUTH, auth_pae);
371 :
372 1 : sm->authPortStatus = Unauthorized;
373 1 : setPortUnauthorized();
374 1 : sm->portMode = ForceUnauthorized;
375 1 : sm->eapolStart = FALSE;
376 1 : txCannedFail();
377 1 : }
378 :
379 :
380 105148 : SM_STEP(AUTH_PAE)
381 : {
382 207597 : if ((sm->portControl == Auto && sm->portMode != sm->portControl) ||
383 204898 : sm->initialize || !sm->eap_if->portEnabled)
384 11957 : SM_ENTER_GLOBAL(AUTH_PAE, INITIALIZE);
385 93193 : else if (sm->portControl == ForceAuthorized &&
386 3 : sm->portMode != sm->portControl &&
387 2 : !(sm->initialize || !sm->eap_if->portEnabled))
388 1 : SM_ENTER_GLOBAL(AUTH_PAE, FORCE_AUTH);
389 93192 : else if (sm->portControl == ForceUnauthorized &&
390 3 : sm->portMode != sm->portControl &&
391 2 : !(sm->initialize || !sm->eap_if->portEnabled))
392 1 : SM_ENTER_GLOBAL(AUTH_PAE, FORCE_UNAUTH);
393 : else {
394 93189 : switch (sm->auth_pae_state) {
395 : case AUTH_PAE_INITIALIZE:
396 2825 : SM_ENTER(AUTH_PAE, DISCONNECTED);
397 2825 : break;
398 : case AUTH_PAE_DISCONNECTED:
399 2825 : SM_ENTER(AUTH_PAE, RESTART);
400 2825 : break;
401 : case AUTH_PAE_RESTART:
402 6014 : if (!sm->eap_if->eapRestart)
403 3007 : SM_ENTER(AUTH_PAE, CONNECTING);
404 6014 : break;
405 : case AUTH_PAE_HELD:
406 0 : if (sm->quietWhile == 0)
407 0 : SM_ENTER(AUTH_PAE, RESTART);
408 0 : break;
409 : case AUTH_PAE_CONNECTING:
410 3007 : if (sm->eapolLogoff || sm->reAuthCount > sm->reAuthMax)
411 4 : SM_ENTER(AUTH_PAE, DISCONNECTED);
412 6003 : else if ((sm->eap_if->eapReq &&
413 3003 : sm->reAuthCount <= sm->reAuthMax) ||
414 6 : sm->eap_if->eapSuccess || sm->eap_if->eapFail)
415 3003 : SM_ENTER(AUTH_PAE, AUTHENTICATING);
416 3007 : break;
417 : case AUTH_PAE_AUTHENTICATED:
418 1691 : if (sm->eapolStart || sm->reAuthenticate)
419 111 : SM_ENTER(AUTH_PAE, RESTART);
420 1580 : else if (sm->eapolLogoff || !sm->portValid)
421 2 : SM_ENTER(AUTH_PAE, DISCONNECTED);
422 1691 : break;
423 : case AUTH_PAE_AUTHENTICATING:
424 76754 : if (sm->authSuccess && sm->portValid)
425 1254 : SM_ENTER(AUTH_PAE, AUTHENTICATED);
426 150247 : else if (sm->authFail ||
427 74747 : (sm->keyDone && !sm->portValid))
428 753 : SM_ENTER(AUTH_PAE, HELD);
429 149424 : else if (sm->eapolStart || sm->eapolLogoff ||
430 74677 : sm->authTimeout)
431 71 : SM_ENTER(AUTH_PAE, ABORTING);
432 76754 : break;
433 : case AUTH_PAE_ABORTING:
434 71 : if (sm->eapolLogoff && !sm->authAbort)
435 0 : SM_ENTER(AUTH_PAE, DISCONNECTED);
436 71 : else if (!sm->eapolLogoff && !sm->authAbort)
437 71 : SM_ENTER(AUTH_PAE, RESTART);
438 71 : break;
439 : case AUTH_PAE_FORCE_AUTH:
440 1 : if (sm->eapolStart)
441 0 : SM_ENTER(AUTH_PAE, FORCE_AUTH);
442 1 : break;
443 : case AUTH_PAE_FORCE_UNAUTH:
444 1 : if (sm->eapolStart)
445 0 : SM_ENTER(AUTH_PAE, FORCE_UNAUTH);
446 1 : break;
447 : }
448 : }
449 105148 : }
450 :
451 :
452 :
453 : /* Backend Authentication state machine */
454 :
455 2773 : SM_STATE(BE_AUTH, INITIALIZE)
456 : {
457 2773 : SM_ENTRY_MA(BE_AUTH, INITIALIZE, be_auth);
458 :
459 2773 : abortAuth();
460 2773 : sm->eap_if->eapNoReq = FALSE;
461 2773 : sm->authAbort = FALSE;
462 2773 : }
463 :
464 :
465 12754 : SM_STATE(BE_AUTH, REQUEST)
466 : {
467 12754 : SM_ENTRY_MA(BE_AUTH, REQUEST, be_auth);
468 :
469 12754 : txReq();
470 12754 : sm->eap_if->eapReq = FALSE;
471 12754 : 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 12754 : sm->eapolEap = FALSE;
485 12754 : }
486 :
487 :
488 11925 : SM_STATE(BE_AUTH, RESPONSE)
489 : {
490 11925 : SM_ENTRY_MA(BE_AUTH, RESPONSE, be_auth);
491 :
492 11925 : sm->authTimeout = FALSE;
493 11925 : sm->eapolEap = FALSE;
494 11925 : sm->eap_if->eapNoReq = FALSE;
495 11925 : sm->aWhile = sm->serverTimeout;
496 11925 : sm->eap_if->eapResp = TRUE;
497 : /* sendRespToServer(); */
498 11925 : sm->backendResponses++;
499 11925 : }
500 :
501 :
502 1277 : SM_STATE(BE_AUTH, SUCCESS)
503 : {
504 1277 : SM_ENTRY_MA(BE_AUTH, SUCCESS, be_auth);
505 :
506 1277 : txReq();
507 1277 : sm->authSuccess = TRUE;
508 1277 : sm->keyRun = TRUE;
509 1277 : }
510 :
511 :
512 752 : SM_STATE(BE_AUTH, FAIL)
513 : {
514 752 : SM_ENTRY_MA(BE_AUTH, FAIL, be_auth);
515 :
516 752 : txReq();
517 752 : sm->authFail = TRUE;
518 752 : }
519 :
520 :
521 1 : SM_STATE(BE_AUTH, TIMEOUT)
522 : {
523 1 : SM_ENTRY_MA(BE_AUTH, TIMEOUT, be_auth);
524 :
525 1 : sm->authTimeout = TRUE;
526 1 : }
527 :
528 :
529 4840 : SM_STATE(BE_AUTH, IDLE)
530 : {
531 4840 : SM_ENTRY_MA(BE_AUTH, IDLE, be_auth);
532 :
533 4840 : sm->authStart = FALSE;
534 4840 : }
535 :
536 :
537 25 : SM_STATE(BE_AUTH, IGNORE)
538 : {
539 25 : SM_ENTRY_MA(BE_AUTH, IGNORE, be_auth);
540 :
541 25 : sm->eap_if->eapNoReq = FALSE;
542 25 : }
543 :
544 :
545 105148 : SM_STEP(BE_AUTH)
546 : {
547 105148 : if (sm->portControl != Auto || sm->initialize || sm->authAbort) {
548 2773 : SM_ENTER_GLOBAL(BE_AUTH, INITIALIZE);
549 107921 : return;
550 : }
551 :
552 102375 : switch (sm->be_auth_state) {
553 : case BE_AUTH_INITIALIZE:
554 2770 : SM_ENTER(BE_AUTH, IDLE);
555 2770 : break;
556 : case BE_AUTH_REQUEST:
557 33605 : if (sm->eapolEap)
558 11923 : SM_ENTER(BE_AUTH, RESPONSE);
559 21682 : else if (sm->eap_if->eapReq)
560 8 : SM_ENTER(BE_AUTH, REQUEST);
561 21674 : else if (sm->eap_if->eapTimeout)
562 0 : SM_ENTER(BE_AUTH, TIMEOUT);
563 33605 : break;
564 : case BE_AUTH_RESPONSE:
565 38594 : if (sm->eap_if->eapNoReq)
566 25 : SM_ENTER(BE_AUTH, IGNORE);
567 38594 : if (sm->eap_if->eapReq) {
568 9744 : sm->backendAccessChallenges++;
569 9744 : SM_ENTER(BE_AUTH, REQUEST);
570 28850 : } else if (sm->aWhile == 0)
571 1 : SM_ENTER(BE_AUTH, TIMEOUT);
572 28849 : else if (sm->eap_if->eapFail) {
573 749 : sm->backendAuthFails++;
574 749 : SM_ENTER(BE_AUTH, FAIL);
575 28100 : } else if (sm->eap_if->eapSuccess) {
576 1277 : sm->backendAuthSuccesses++;
577 1277 : SM_ENTER(BE_AUTH, SUCCESS);
578 : }
579 38594 : break;
580 : case BE_AUTH_SUCCESS:
581 1318 : SM_ENTER(BE_AUTH, IDLE);
582 1318 : break;
583 : case BE_AUTH_FAIL:
584 752 : SM_ENTER(BE_AUTH, IDLE);
585 752 : break;
586 : case BE_AUTH_TIMEOUT:
587 0 : SM_ENTER(BE_AUTH, IDLE);
588 0 : break;
589 : case BE_AUTH_IDLE:
590 25317 : if (sm->eap_if->eapFail && sm->authStart)
591 3 : SM_ENTER(BE_AUTH, FAIL);
592 25314 : else if (sm->eap_if->eapReq && sm->authStart)
593 3000 : SM_ENTER(BE_AUTH, REQUEST);
594 22314 : else if (sm->eap_if->eapSuccess && sm->authStart)
595 0 : SM_ENTER(BE_AUTH, SUCCESS);
596 25317 : break;
597 : case BE_AUTH_IGNORE:
598 19 : if (sm->eapolEap)
599 2 : SM_ENTER(BE_AUTH, RESPONSE);
600 17 : else if (sm->eap_if->eapReq)
601 2 : SM_ENTER(BE_AUTH, REQUEST);
602 15 : else if (sm->eap_if->eapTimeout)
603 0 : SM_ENTER(BE_AUTH, TIMEOUT);
604 19 : break;
605 : }
606 : }
607 :
608 :
609 :
610 : /* Reauthentication Timer state machine */
611 :
612 93836 : SM_STATE(REAUTH_TIMER, INITIALIZE)
613 : {
614 93836 : SM_ENTRY_MA(REAUTH_TIMER, INITIALIZE, reauth_timer);
615 :
616 93836 : sm->reAuthWhen = sm->reAuthPeriod;
617 93836 : }
618 :
619 :
620 1 : SM_STATE(REAUTH_TIMER, REAUTHENTICATE)
621 : {
622 1 : SM_ENTRY_MA(REAUTH_TIMER, REAUTHENTICATE, reauth_timer);
623 :
624 1 : sm->reAuthenticate = TRUE;
625 1 : sm->eapol->cb.eapol_event(sm->eapol->conf.ctx, sm->sta,
626 : EAPOL_AUTH_REAUTHENTICATE);
627 1 : }
628 :
629 :
630 105148 : SM_STEP(REAUTH_TIMER)
631 : {
632 207594 : if (sm->portControl != Auto || sm->initialize ||
633 113760 : sm->authPortStatus == Unauthorized || !sm->reAuthEnabled) {
634 93835 : SM_ENTER_GLOBAL(REAUTH_TIMER, INITIALIZE);
635 198983 : return;
636 : }
637 :
638 11313 : switch (sm->reauth_timer_state) {
639 : case REAUTH_TIMER_INITIALIZE:
640 11312 : if (sm->reAuthWhen == 0)
641 1 : SM_ENTER(REAUTH_TIMER, REAUTHENTICATE);
642 11312 : break;
643 : case REAUTH_TIMER_REAUTHENTICATE:
644 1 : SM_ENTER(REAUTH_TIMER, INITIALIZE);
645 1 : break;
646 : }
647 : }
648 :
649 :
650 :
651 : /* Authenticator Key Transmit state machine */
652 :
653 2704 : SM_STATE(AUTH_KEY_TX, NO_KEY_TRANSMIT)
654 : {
655 2704 : SM_ENTRY_MA(AUTH_KEY_TX, NO_KEY_TRANSMIT, auth_key_tx);
656 2704 : }
657 :
658 :
659 8 : SM_STATE(AUTH_KEY_TX, KEY_TRANSMIT)
660 : {
661 8 : SM_ENTRY_MA(AUTH_KEY_TX, KEY_TRANSMIT, auth_key_tx);
662 :
663 8 : txKey();
664 8 : sm->eap_if->eapKeyAvailable = FALSE;
665 8 : sm->keyDone = TRUE;
666 8 : }
667 :
668 :
669 105148 : SM_STEP(AUTH_KEY_TX)
670 : {
671 105148 : if (sm->initialize || sm->portControl != Auto) {
672 2702 : SM_ENTER_GLOBAL(AUTH_KEY_TX, NO_KEY_TRANSMIT);
673 107850 : return;
674 : }
675 :
676 102446 : switch (sm->auth_key_tx_state) {
677 : case AUTH_KEY_TX_NO_KEY_TRANSMIT:
678 102432 : if (sm->keyTxEnabled && sm->eap_if->eapKeyAvailable &&
679 16 : sm->keyRun && !(sm->flags & EAPOL_SM_USES_WPA))
680 8 : SM_ENTER(AUTH_KEY_TX, KEY_TRANSMIT);
681 102424 : break;
682 : case AUTH_KEY_TX_KEY_TRANSMIT:
683 22 : if (!sm->keyTxEnabled || !sm->keyRun)
684 2 : SM_ENTER(AUTH_KEY_TX, NO_KEY_TRANSMIT);
685 20 : else if (sm->eap_if->eapKeyAvailable)
686 0 : SM_ENTER(AUTH_KEY_TX, KEY_TRANSMIT);
687 22 : break;
688 : }
689 : }
690 :
691 :
692 :
693 : /* Key Receive state machine */
694 :
695 12715 : SM_STATE(KEY_RX, NO_KEY_RECEIVE)
696 : {
697 12715 : SM_ENTRY_MA(KEY_RX, NO_KEY_RECEIVE, key_rx);
698 12715 : }
699 :
700 :
701 0 : SM_STATE(KEY_RX, KEY_RECEIVE)
702 : {
703 0 : SM_ENTRY_MA(KEY_RX, KEY_RECEIVE, key_rx);
704 :
705 : processKey();
706 0 : sm->rxKey = FALSE;
707 0 : }
708 :
709 :
710 105148 : SM_STEP(KEY_RX)
711 : {
712 105148 : if (sm->initialize || !sm->eap_if->portEnabled) {
713 12715 : SM_ENTER_GLOBAL(KEY_RX, NO_KEY_RECEIVE);
714 117863 : return;
715 : }
716 :
717 92433 : switch (sm->key_rx_state) {
718 : case KEY_RX_NO_KEY_RECEIVE:
719 92433 : if (sm->rxKey)
720 0 : SM_ENTER(KEY_RX, KEY_RECEIVE);
721 92433 : break;
722 : case KEY_RX_KEY_RECEIVE:
723 0 : if (sm->rxKey)
724 0 : SM_ENTER(KEY_RX, KEY_RECEIVE);
725 0 : break;
726 : }
727 : }
728 :
729 :
730 :
731 : /* Controlled Directions state machine */
732 :
733 2698 : SM_STATE(CTRL_DIR, FORCE_BOTH)
734 : {
735 2698 : SM_ENTRY_MA(CTRL_DIR, FORCE_BOTH, ctrl_dir);
736 2698 : sm->operControlledDirections = Both;
737 2698 : }
738 :
739 :
740 2698 : SM_STATE(CTRL_DIR, IN_OR_BOTH)
741 : {
742 2698 : SM_ENTRY_MA(CTRL_DIR, IN_OR_BOTH, ctrl_dir);
743 2698 : sm->operControlledDirections = sm->adminControlledDirections;
744 2698 : }
745 :
746 :
747 105148 : SM_STEP(CTRL_DIR)
748 : {
749 105148 : if (sm->initialize) {
750 2698 : SM_ENTER_GLOBAL(CTRL_DIR, IN_OR_BOTH);
751 107846 : return;
752 : }
753 :
754 102450 : switch (sm->ctrl_dir_state) {
755 : case CTRL_DIR_FORCE_BOTH:
756 99752 : if (sm->eap_if->portEnabled && sm->operEdge)
757 0 : SM_ENTER(CTRL_DIR, IN_OR_BOTH);
758 99752 : break;
759 : case CTRL_DIR_IN_OR_BOTH:
760 5396 : if (sm->operControlledDirections !=
761 2698 : sm->adminControlledDirections)
762 0 : SM_ENTER(CTRL_DIR, IN_OR_BOTH);
763 2698 : if (!sm->eap_if->portEnabled || !sm->operEdge)
764 2698 : SM_ENTER(CTRL_DIR, FORCE_BOTH);
765 2698 : break;
766 : }
767 : }
768 :
769 :
770 :
771 : struct eapol_state_machine *
772 2699 : 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 2699 : if (eapol == NULL)
781 0 : return NULL;
782 :
783 2699 : sm = os_zalloc(sizeof(*sm));
784 2699 : if (sm == NULL) {
785 1 : wpa_printf(MSG_DEBUG, "IEEE 802.1X state machine allocation "
786 : "failed");
787 1 : return NULL;
788 : }
789 2698 : sm->radius_identifier = -1;
790 2698 : os_memcpy(sm->addr, addr, ETH_ALEN);
791 2698 : sm->flags = flags;
792 :
793 2698 : sm->eapol = eapol;
794 2698 : sm->sta = sta_ctx;
795 :
796 : /* Set default values for state machine constants */
797 2698 : sm->auth_pae_state = AUTH_PAE_INITIALIZE;
798 2698 : sm->quietPeriod = AUTH_PAE_DEFAULT_quietPeriod;
799 2698 : sm->reAuthMax = AUTH_PAE_DEFAULT_reAuthMax;
800 :
801 2698 : sm->be_auth_state = BE_AUTH_INITIALIZE;
802 2698 : sm->serverTimeout = BE_AUTH_DEFAULT_serverTimeout;
803 :
804 2698 : sm->reauth_timer_state = REAUTH_TIMER_INITIALIZE;
805 2698 : sm->reAuthPeriod = eapol->conf.eap_reauth_period;
806 2698 : sm->reAuthEnabled = eapol->conf.eap_reauth_period > 0 ? TRUE : FALSE;
807 :
808 2698 : sm->auth_key_tx_state = AUTH_KEY_TX_NO_KEY_TRANSMIT;
809 :
810 2698 : sm->key_rx_state = KEY_RX_NO_KEY_RECEIVE;
811 :
812 2698 : sm->ctrl_dir_state = CTRL_DIR_IN_OR_BOTH;
813 :
814 2698 : sm->portControl = Auto;
815 :
816 2746 : if (!eapol->conf.wpa &&
817 90 : (eapol->default_wep_key || eapol->conf.individual_wep_key_len > 0))
818 6 : sm->keyTxEnabled = TRUE;
819 : else
820 2692 : sm->keyTxEnabled = FALSE;
821 2698 : if (eapol->conf.wpa)
822 2650 : sm->portValid = FALSE;
823 : else
824 48 : sm->portValid = TRUE;
825 :
826 2698 : os_memset(&eap_conf, 0, sizeof(eap_conf));
827 2698 : eap_conf.eap_server = eapol->conf.eap_server;
828 2698 : eap_conf.ssl_ctx = eapol->conf.ssl_ctx;
829 2698 : eap_conf.msg_ctx = eapol->conf.msg_ctx;
830 2698 : eap_conf.eap_sim_db_priv = eapol->conf.eap_sim_db_priv;
831 2698 : eap_conf.pac_opaque_encr_key = eapol->conf.pac_opaque_encr_key;
832 2698 : eap_conf.eap_fast_a_id = eapol->conf.eap_fast_a_id;
833 2698 : eap_conf.eap_fast_a_id_len = eapol->conf.eap_fast_a_id_len;
834 2698 : eap_conf.eap_fast_a_id_info = eapol->conf.eap_fast_a_id_info;
835 2698 : eap_conf.eap_fast_prov = eapol->conf.eap_fast_prov;
836 2698 : eap_conf.pac_key_lifetime = eapol->conf.pac_key_lifetime;
837 2698 : eap_conf.pac_key_refresh_time = eapol->conf.pac_key_refresh_time;
838 2698 : eap_conf.eap_sim_aka_result_ind = eapol->conf.eap_sim_aka_result_ind;
839 2698 : eap_conf.tnc = eapol->conf.tnc;
840 2698 : eap_conf.wps = eapol->conf.wps;
841 2698 : eap_conf.assoc_wps_ie = assoc_wps_ie;
842 2698 : eap_conf.assoc_p2p_ie = assoc_p2p_ie;
843 2698 : eap_conf.peer_addr = addr;
844 2698 : eap_conf.fragment_size = eapol->conf.fragment_size;
845 2698 : eap_conf.pwd_group = eapol->conf.pwd_group;
846 2698 : eap_conf.pbc_in_m1 = eapol->conf.pbc_in_m1;
847 2698 : eap_conf.server_id = eapol->conf.server_id;
848 2698 : eap_conf.server_id_len = eapol->conf.server_id_len;
849 2698 : eap_conf.erp = eapol->conf.erp;
850 2698 : eap_conf.tls_session_lifetime = eapol->conf.tls_session_lifetime;
851 2698 : sm->eap = eap_server_sm_init(sm, &eapol_cb, &eap_conf);
852 2698 : if (sm->eap == NULL) {
853 0 : eapol_auth_free(sm);
854 0 : return NULL;
855 : }
856 2698 : sm->eap_if = eap_get_interface(sm->eap);
857 :
858 2698 : eapol_auth_initialize(sm);
859 :
860 2698 : if (identity) {
861 1 : sm->identity = (u8 *) os_strdup(identity);
862 1 : if (sm->identity)
863 1 : sm->identity_len = os_strlen(identity);
864 : }
865 2698 : if (radius_cui)
866 1 : sm->radius_cui = wpabuf_alloc_copy(radius_cui,
867 : os_strlen(radius_cui));
868 :
869 : #ifndef CONFIG_NO_RADIUS
870 2440 : if (radius_gen_session_id((u8 *) &sm->acct_multi_session_id,
871 : sizeof(sm->acct_multi_session_id)) < 0) {
872 0 : eapol_auth_free(sm);
873 0 : return NULL;
874 : }
875 : #endif /* CONFIG_NO_RADIUS */
876 :
877 2698 : return sm;
878 : }
879 :
880 :
881 2698 : void eapol_auth_free(struct eapol_state_machine *sm)
882 : {
883 2698 : if (sm == NULL)
884 2698 : return;
885 :
886 2698 : eloop_cancel_timeout(eapol_port_timers_tick, NULL, sm);
887 2698 : eloop_cancel_timeout(eapol_sm_step_cb, sm, NULL);
888 2698 : if (sm->eap)
889 2698 : eap_server_sm_deinit(sm->eap);
890 :
891 2698 : wpabuf_free(sm->radius_cui);
892 2698 : os_free(sm->identity);
893 2698 : os_free(sm);
894 : }
895 :
896 :
897 588030 : static int eapol_sm_sta_entry_alive(struct eapol_authenticator *eapol,
898 : const u8 *addr)
899 : {
900 588030 : return eapol->cb.sta_entry_alive(eapol->conf.ctx, addr);
901 : }
902 :
903 :
904 39925 : static void eapol_sm_step_run(struct eapol_state_machine *sm)
905 : {
906 39925 : 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 39925 : int max_steps = 100;
911 :
912 39925 : 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 105148 : prev_auth_pae = sm->auth_pae_state;
922 105148 : prev_be_auth = sm->be_auth_state;
923 105148 : prev_reauth_timer = sm->reauth_timer_state;
924 105148 : prev_auth_key_tx = sm->auth_key_tx_state;
925 105148 : prev_key_rx = sm->key_rx_state;
926 105148 : prev_ctrl_dir = sm->ctrl_dir_state;
927 :
928 105148 : SM_STEP_RUN(AUTH_PAE);
929 105148 : if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
930 105148 : SM_STEP_RUN(BE_AUTH);
931 105148 : if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
932 105148 : SM_STEP_RUN(REAUTH_TIMER);
933 105148 : if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
934 105148 : SM_STEP_RUN(AUTH_KEY_TX);
935 105148 : if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
936 105148 : SM_STEP_RUN(KEY_RX);
937 105148 : if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
938 105148 : SM_STEP_RUN(CTRL_DIR);
939 :
940 195588 : if (prev_auth_pae != sm->auth_pae_state ||
941 153281 : prev_be_auth != sm->be_auth_state ||
942 125681 : prev_reauth_timer != sm->reauth_timer_state ||
943 125678 : prev_auth_key_tx != sm->auth_key_tx_state ||
944 125676 : prev_key_rx != sm->key_rx_state ||
945 62838 : prev_ctrl_dir != sm->ctrl_dir_state) {
946 42310 : if (--max_steps > 0)
947 42310 : goto restart;
948 : /* Re-run from eloop timeout */
949 0 : eapol_auth_step(sm);
950 0 : return;
951 : }
952 :
953 62838 : if (eapol_sm_sta_entry_alive(eapol, addr) && sm->eap) {
954 57442 : if (eap_server_sm_step(sm->eap)) {
955 22913 : if (--max_steps > 0)
956 22913 : goto restart;
957 : /* Re-run from eloop timeout */
958 0 : eapol_auth_step(sm);
959 0 : return;
960 : }
961 :
962 : /* TODO: find a better location for this */
963 34529 : if (sm->eap_if->aaaEapResp) {
964 7278 : sm->eap_if->aaaEapResp = FALSE;
965 7278 : if (sm->eap_if->aaaEapRespData == NULL) {
966 3 : wpa_printf(MSG_DEBUG, "EAPOL: aaaEapResp set, "
967 : "but no aaaEapRespData available");
968 3 : return;
969 : }
970 29100 : sm->eapol->cb.aaa_send(
971 7275 : sm->eapol->conf.ctx, sm->sta,
972 7275 : wpabuf_head(sm->eap_if->aaaEapRespData),
973 7275 : wpabuf_len(sm->eap_if->aaaEapRespData));
974 : }
975 : }
976 :
977 39922 : if (eapol_sm_sta_entry_alive(eapol, addr))
978 34526 : sm->eapol->cb.eapol_event(sm->eapol->conf.ctx, sm->sta,
979 : EAPOL_AUTH_SM_CHANGE);
980 : }
981 :
982 :
983 34045 : static void eapol_sm_step_cb(void *eloop_ctx, void *timeout_ctx)
984 : {
985 34045 : struct eapol_state_machine *sm = eloop_ctx;
986 34045 : eapol_sm_step_run(sm);
987 34045 : }
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 : */
997 40806 : 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 40806 : eloop_register_timeout(0, 0, eapol_sm_step_cb, sm, NULL);
1006 40806 : }
1007 :
1008 :
1009 2698 : static void eapol_auth_initialize(struct eapol_state_machine *sm)
1010 : {
1011 2698 : sm->initializing = TRUE;
1012 : /* Initialize the state machines by asserting initialize and then
1013 : * deasserting it after one step */
1014 2698 : sm->initialize = TRUE;
1015 2698 : eapol_sm_step_run(sm);
1016 2698 : sm->initialize = FALSE;
1017 2698 : eapol_sm_step_run(sm);
1018 2698 : sm->initializing = FALSE;
1019 :
1020 : /* Start one second tick for port timers state machine */
1021 2698 : eloop_cancel_timeout(eapol_port_timers_tick, NULL, sm);
1022 2698 : eloop_register_timeout(1, 0, eapol_port_timers_tick, NULL, sm);
1023 2698 : }
1024 :
1025 :
1026 1074 : 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 1074 : struct eapol_state_machine *sm = ctx;
1031 : int ret;
1032 :
1033 1074 : ret = sm->eapol->cb.get_eap_user(sm->eapol->conf.ctx, identity,
1034 : identity_len, phase2, user);
1035 1074 : if (user->remediation)
1036 0 : sm->remediation = 1;
1037 1074 : return ret;
1038 : }
1039 :
1040 :
1041 2964 : static const char * eapol_sm_get_eap_req_id_text(void *ctx, size_t *len)
1042 : {
1043 2964 : struct eapol_state_machine *sm = ctx;
1044 2964 : *len = sm->eapol->conf.eap_req_id_text_len;
1045 2964 : return sm->eapol->conf.eap_req_id_text;
1046 : }
1047 :
1048 :
1049 2912 : static int eapol_sm_get_erp_send_reauth_start(void *ctx)
1050 : {
1051 2912 : struct eapol_state_machine *sm = ctx;
1052 2912 : return sm->eapol->conf.erp_send_reauth_start;
1053 : }
1054 :
1055 :
1056 92 : static const char * eapol_sm_get_erp_domain(void *ctx)
1057 : {
1058 92 : struct eapol_state_machine *sm = ctx;
1059 92 : return sm->eapol->conf.erp_domain;
1060 : }
1061 :
1062 :
1063 11 : static struct eap_server_erp_key * eapol_sm_erp_get_key(void *ctx,
1064 : const char *keyname)
1065 : {
1066 11 : struct eapol_state_machine *sm = ctx;
1067 11 : return sm->eapol->cb.erp_get_key(sm->eapol->conf.ctx, keyname);
1068 : }
1069 :
1070 :
1071 24 : static int eapol_sm_erp_add_key(void *ctx, struct eap_server_erp_key *erp)
1072 : {
1073 24 : struct eapol_state_machine *sm = ctx;
1074 24 : 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 :
1090 58 : int eapol_auth_eap_pending_cb(struct eapol_state_machine *sm, void *ctx)
1091 : {
1092 58 : if (sm == NULL || ctx == NULL || ctx != sm->eap)
1093 0 : return -1;
1094 :
1095 58 : eap_sm_pending_cb(sm->eap);
1096 58 : eapol_auth_step(sm);
1097 :
1098 58 : return 0;
1099 : }
1100 :
1101 :
1102 11 : void eapol_auth_reauthenticate(struct eapol_state_machine *sm)
1103 : {
1104 66 : wpa_printf(MSG_DEBUG, "EAPOL: External reauthentication trigger for "
1105 66 : MACSTR, MAC2STR(sm->addr));
1106 11 : sm->reAuthenticate = TRUE;
1107 11 : eapol_auth_step(sm);
1108 11 : }
1109 :
1110 :
1111 18 : int eapol_auth_set_conf(struct eapol_state_machine *sm, const char *param,
1112 : const char *value)
1113 : {
1114 108 : wpa_printf(MSG_DEBUG, "EAPOL: External configuration operation for "
1115 : MACSTR " - param=%s value=%s",
1116 108 : MAC2STR(sm->addr), param, value);
1117 :
1118 18 : if (os_strcasecmp(param, "AdminControlledDirections") == 0) {
1119 3 : if (os_strcmp(value, "Both") == 0)
1120 1 : sm->adminControlledDirections = Both;
1121 2 : else if (os_strcmp(value, "In") == 0)
1122 1 : sm->adminControlledDirections = In;
1123 : else
1124 1 : return -1;
1125 2 : eapol_auth_step(sm);
1126 2 : return 0;
1127 : }
1128 :
1129 15 : if (os_strcasecmp(param, "AdminControlledPortControl") == 0) {
1130 4 : if (os_strcmp(value, "ForceAuthorized") == 0)
1131 1 : sm->portControl = ForceAuthorized;
1132 3 : else if (os_strcmp(value, "ForceUnauthorized") == 0)
1133 1 : sm->portControl = ForceUnauthorized;
1134 2 : else if (os_strcmp(value, "Auto") == 0)
1135 1 : sm->portControl = Auto;
1136 : else
1137 1 : return -1;
1138 3 : eapol_auth_step(sm);
1139 3 : return 0;
1140 : }
1141 :
1142 11 : if (os_strcasecmp(param, "quietPeriod") == 0) {
1143 1 : sm->quietPeriod = atoi(value);
1144 1 : return 0;
1145 : }
1146 :
1147 10 : if (os_strcasecmp(param, "serverTimeout") == 0) {
1148 2 : sm->serverTimeout = atoi(value);
1149 2 : return 0;
1150 : }
1151 :
1152 8 : if (os_strcasecmp(param, "reAuthPeriod") == 0) {
1153 1 : sm->reAuthPeriod = atoi(value);
1154 1 : return 0;
1155 : }
1156 :
1157 7 : if (os_strcasecmp(param, "reAuthEnabled") == 0) {
1158 3 : if (os_strcmp(value, "TRUE") == 0)
1159 1 : sm->reAuthEnabled = TRUE;
1160 2 : else if (os_strcmp(value, "FALSE") == 0)
1161 1 : sm->reAuthEnabled = FALSE;
1162 : else
1163 1 : return -1;
1164 2 : eapol_auth_step(sm);
1165 2 : return 0;
1166 : }
1167 :
1168 4 : if (os_strcasecmp(param, "KeyTransmissionEnabled") == 0) {
1169 3 : if (os_strcmp(value, "TRUE") == 0)
1170 1 : sm->keyTxEnabled = TRUE;
1171 2 : else if (os_strcmp(value, "FALSE") == 0)
1172 1 : sm->keyTxEnabled = FALSE;
1173 : else
1174 1 : return -1;
1175 2 : eapol_auth_step(sm);
1176 2 : return 0;
1177 : }
1178 :
1179 1 : return -1;
1180 : }
1181 :
1182 :
1183 2651 : static int eapol_auth_conf_clone(struct eapol_auth_config *dst,
1184 : struct eapol_auth_config *src)
1185 : {
1186 2651 : dst->ctx = src->ctx;
1187 2651 : dst->eap_reauth_period = src->eap_reauth_period;
1188 2651 : dst->wpa = src->wpa;
1189 2651 : dst->individual_wep_key_len = src->individual_wep_key_len;
1190 2651 : dst->eap_server = src->eap_server;
1191 2651 : dst->ssl_ctx = src->ssl_ctx;
1192 2651 : dst->msg_ctx = src->msg_ctx;
1193 2651 : dst->eap_sim_db_priv = src->eap_sim_db_priv;
1194 2651 : os_free(dst->eap_req_id_text);
1195 2651 : dst->pwd_group = src->pwd_group;
1196 2651 : dst->pbc_in_m1 = src->pbc_in_m1;
1197 2651 : dst->server_id = src->server_id;
1198 2651 : dst->server_id_len = src->server_id_len;
1199 2651 : if (src->eap_req_id_text) {
1200 1 : dst->eap_req_id_text = os_malloc(src->eap_req_id_text_len);
1201 1 : if (dst->eap_req_id_text == NULL)
1202 0 : return -1;
1203 1 : os_memcpy(dst->eap_req_id_text, src->eap_req_id_text,
1204 : src->eap_req_id_text_len);
1205 1 : dst->eap_req_id_text_len = src->eap_req_id_text_len;
1206 : } else {
1207 2650 : dst->eap_req_id_text = NULL;
1208 2650 : dst->eap_req_id_text_len = 0;
1209 : }
1210 2651 : if (src->pac_opaque_encr_key) {
1211 29 : dst->pac_opaque_encr_key = os_malloc(16);
1212 29 : if (dst->pac_opaque_encr_key == NULL)
1213 0 : goto fail;
1214 29 : os_memcpy(dst->pac_opaque_encr_key, src->pac_opaque_encr_key,
1215 : 16);
1216 : } else
1217 2622 : dst->pac_opaque_encr_key = NULL;
1218 2651 : if (src->eap_fast_a_id) {
1219 29 : dst->eap_fast_a_id = os_malloc(src->eap_fast_a_id_len);
1220 29 : if (dst->eap_fast_a_id == NULL)
1221 0 : goto fail;
1222 29 : os_memcpy(dst->eap_fast_a_id, src->eap_fast_a_id,
1223 : src->eap_fast_a_id_len);
1224 29 : dst->eap_fast_a_id_len = src->eap_fast_a_id_len;
1225 : } else
1226 2622 : dst->eap_fast_a_id = NULL;
1227 2651 : if (src->eap_fast_a_id_info) {
1228 29 : dst->eap_fast_a_id_info = os_strdup(src->eap_fast_a_id_info);
1229 29 : if (dst->eap_fast_a_id_info == NULL)
1230 0 : goto fail;
1231 : } else
1232 2622 : dst->eap_fast_a_id_info = NULL;
1233 2651 : dst->eap_fast_prov = src->eap_fast_prov;
1234 2651 : dst->pac_key_lifetime = src->pac_key_lifetime;
1235 2651 : dst->pac_key_refresh_time = src->pac_key_refresh_time;
1236 2651 : dst->eap_sim_aka_result_ind = src->eap_sim_aka_result_ind;
1237 2651 : dst->tnc = src->tnc;
1238 2651 : dst->wps = src->wps;
1239 2651 : dst->fragment_size = src->fragment_size;
1240 :
1241 2651 : os_free(dst->erp_domain);
1242 2651 : if (src->erp_domain) {
1243 12 : dst->erp_domain = os_strdup(src->erp_domain);
1244 12 : if (dst->erp_domain == NULL)
1245 0 : goto fail;
1246 : } else {
1247 2639 : dst->erp_domain = NULL;
1248 : }
1249 2651 : dst->erp_send_reauth_start = src->erp_send_reauth_start;
1250 2651 : dst->erp = src->erp;
1251 2651 : dst->tls_session_lifetime = src->tls_session_lifetime;
1252 :
1253 2651 : return 0;
1254 :
1255 : fail:
1256 0 : eapol_auth_conf_free(dst);
1257 0 : return -1;
1258 : }
1259 :
1260 :
1261 2651 : static void eapol_auth_conf_free(struct eapol_auth_config *conf)
1262 : {
1263 2651 : os_free(conf->eap_req_id_text);
1264 2651 : conf->eap_req_id_text = NULL;
1265 2651 : os_free(conf->pac_opaque_encr_key);
1266 2651 : conf->pac_opaque_encr_key = NULL;
1267 2651 : os_free(conf->eap_fast_a_id);
1268 2651 : conf->eap_fast_a_id = NULL;
1269 2651 : os_free(conf->eap_fast_a_id_info);
1270 2651 : conf->eap_fast_a_id_info = NULL;
1271 2651 : os_free(conf->erp_domain);
1272 2651 : conf->erp_domain = NULL;
1273 2651 : }
1274 :
1275 :
1276 2652 : 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 2652 : eapol = os_zalloc(sizeof(*eapol));
1282 2652 : if (eapol == NULL)
1283 1 : return NULL;
1284 :
1285 2651 : if (eapol_auth_conf_clone(&eapol->conf, conf) < 0) {
1286 0 : os_free(eapol);
1287 0 : return NULL;
1288 : }
1289 :
1290 2651 : if (conf->individual_wep_key_len > 0) {
1291 : /* use key0 in individual key and key1 in broadcast key */
1292 6 : eapol->default_wep_key_idx = 1;
1293 : }
1294 :
1295 2651 : eapol->cb.eapol_send = cb->eapol_send;
1296 2651 : eapol->cb.aaa_send = cb->aaa_send;
1297 2651 : eapol->cb.finished = cb->finished;
1298 2651 : eapol->cb.get_eap_user = cb->get_eap_user;
1299 2651 : eapol->cb.sta_entry_alive = cb->sta_entry_alive;
1300 2651 : eapol->cb.logger = cb->logger;
1301 2651 : eapol->cb.set_port_authorized = cb->set_port_authorized;
1302 2651 : eapol->cb.abort_auth = cb->abort_auth;
1303 2651 : eapol->cb.tx_key = cb->tx_key;
1304 2651 : eapol->cb.eapol_event = cb->eapol_event;
1305 2651 : eapol->cb.erp_get_key = cb->erp_get_key;
1306 2651 : eapol->cb.erp_add_key = cb->erp_add_key;
1307 :
1308 2651 : return eapol;
1309 : }
1310 :
1311 :
1312 2659 : void eapol_auth_deinit(struct eapol_authenticator *eapol)
1313 : {
1314 2659 : if (eapol == NULL)
1315 2667 : return;
1316 :
1317 2651 : eapol_auth_conf_free(&eapol->conf);
1318 2651 : os_free(eapol->default_wep_key);
1319 2651 : os_free(eapol);
1320 : }
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