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 10142 : static void eapol_auth_logger(struct eapol_authenticator *eapol,
50 : const u8 *addr, eapol_logger_level level,
51 : const char *txt)
52 : {
53 10142 : if (eapol->cb.logger == NULL)
54 10142 : return;
55 10142 : eapol->cb.logger(eapol->conf.ctx, addr, level, txt);
56 : }
57 :
58 :
59 10144 : 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 10144 : if (eapol->cb.logger == NULL)
68 5 : return;
69 :
70 10144 : maxlen = os_strlen(fmt) + 100;
71 10144 : format = os_malloc(maxlen);
72 10144 : if (!format)
73 5 : return;
74 :
75 10139 : va_start(ap, fmt);
76 10139 : vsnprintf(format, maxlen, fmt, ap);
77 10139 : va_end(ap);
78 :
79 10139 : eapol_auth_logger(eapol, addr, level, format);
80 :
81 10139 : 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 8381 : static void eapol_auth_tx_req(struct eapol_state_machine *sm)
107 : {
108 16759 : if (sm->eap_if->eapReqData == NULL ||
109 8378 : wpabuf_len(sm->eap_if->eapReqData) < sizeof(struct eap_hdr)) {
110 3 : 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 3 : return;
115 : }
116 :
117 8378 : 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 8375 : sm->last_eap_id = eap_get_id(sm->eap_if->eapReqData);
125 8375 : eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_DEBUG,
126 : "Sending EAP Packet (identifier %d)",
127 8375 : sm->last_eap_id);
128 25125 : sm->eapol->cb.eapol_send(sm->eapol->conf.ctx, sm->sta,
129 : IEEE802_1X_TYPE_EAP_PACKET,
130 8375 : wpabuf_head(sm->eap_if->eapReqData),
131 8375 : wpabuf_len(sm->eap_if->eapReqData));
132 8375 : sm->dot1xAuthEapolFramesTx++;
133 8375 : if (eap_get_type(sm->eap_if->eapReqData) == EAP_TYPE_IDENTITY)
134 1723 : sm->dot1xAuthEapolReqIdFramesTx++;
135 : else
136 6652 : 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 : */
148 357 : static void eapol_port_timers_tick(void *eloop_ctx, void *timeout_ctx)
149 : {
150 357 : struct eapol_state_machine *state = timeout_ctx;
151 :
152 357 : if (state->aWhile > 0) {
153 327 : state->aWhile--;
154 327 : 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 :
161 357 : if (state->quietWhile > 0) {
162 27 : state->quietWhile--;
163 27 : 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 :
170 357 : if (state->reAuthWhen > 0) {
171 357 : state->reAuthWhen--;
172 357 : 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 :
179 357 : if (state->eap_if->retransWhile > 0) {
180 271 : state->eap_if->retransWhile--;
181 271 : if (state->eap_if->retransWhile == 0) {
182 294 : wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR
183 : " - (EAP) retransWhile --> 0",
184 294 : MAC2STR(state->addr));
185 : }
186 : }
187 :
188 357 : eapol_sm_step_run(state);
189 :
190 357 : eloop_register_timeout(1, 0, eapol_port_timers_tick, eloop_ctx, state);
191 357 : }
192 :
193 :
194 :
195 : /* Authenticator PAE state machine */
196 :
197 7476 : SM_STATE(AUTH_PAE, INITIALIZE)
198 : {
199 7476 : SM_ENTRY_MA(AUTH_PAE, INITIALIZE, auth_pae);
200 7476 : 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 7476 : sm->keyRun = FALSE;
213 7476 : }
214 :
215 :
216 1610 : SM_STATE(AUTH_PAE, DISCONNECTED)
217 : {
218 1610 : int from_initialize = sm->auth_pae_state == AUTH_PAE_INITIALIZE;
219 :
220 1610 : 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 1610 : SM_ENTRY_MA(AUTH_PAE, DISCONNECTED, auth_pae);
228 :
229 1610 : sm->authPortStatus = Unauthorized;
230 1610 : setPortUnauthorized();
231 1610 : sm->reAuthCount = 0;
232 1610 : sm->eapolLogoff = FALSE;
233 1610 : if (!from_initialize) {
234 4 : sm->eapol->cb.finished(sm->eapol->conf.ctx, sm->sta, 0,
235 2 : sm->flags & EAPOL_SM_PREAUTH,
236 : sm->remediation);
237 : }
238 1610 : }
239 :
240 :
241 1723 : SM_STATE(AUTH_PAE, RESTART)
242 : {
243 1723 : if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATED) {
244 86 : if (sm->reAuthenticate)
245 3 : sm->authAuthReauthsWhileAuthenticated++;
246 86 : if (sm->eapolStart)
247 83 : sm->authAuthEapStartsWhileAuthenticated++;
248 86 : if (sm->eapolLogoff)
249 0 : sm->authAuthEapLogoffWhileAuthenticated++;
250 : }
251 :
252 1723 : SM_ENTRY_MA(AUTH_PAE, RESTART, auth_pae);
253 :
254 1723 : sm->eap_if->eapRestart = TRUE;
255 1723 : }
256 :
257 :
258 1723 : SM_STATE(AUTH_PAE, CONNECTING)
259 : {
260 1723 : if (sm->auth_pae_state != AUTH_PAE_CONNECTING)
261 1723 : sm->authEntersConnecting++;
262 :
263 1723 : SM_ENTRY_MA(AUTH_PAE, CONNECTING, auth_pae);
264 :
265 1723 : sm->reAuthenticate = FALSE;
266 1723 : sm->reAuthCount++;
267 1723 : }
268 :
269 :
270 551 : SM_STATE(AUTH_PAE, HELD)
271 : {
272 551 : if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATING && sm->authFail)
273 551 : sm->authAuthFailWhileAuthenticating++;
274 :
275 551 : SM_ENTRY_MA(AUTH_PAE, HELD, auth_pae);
276 :
277 551 : sm->authPortStatus = Unauthorized;
278 551 : setPortUnauthorized();
279 551 : sm->quietWhile = sm->quietPeriod;
280 551 : sm->eapolLogoff = FALSE;
281 :
282 1102 : eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_WARNING,
283 : "authentication failed - EAP type: %d (%s)",
284 551 : sm->eap_type_authsrv,
285 551 : eap_server_get_name(0, sm->eap_type_authsrv));
286 551 : if (sm->eap_type_authsrv != sm->eap_type_supp) {
287 902 : eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_INFO,
288 : "Supplicant used different EAP type: "
289 451 : "%d (%s)", sm->eap_type_supp,
290 451 : eap_server_get_name(0, sm->eap_type_supp));
291 : }
292 1102 : sm->eapol->cb.finished(sm->eapol->conf.ctx, sm->sta, 0,
293 551 : sm->flags & EAPOL_SM_PREAUTH, sm->remediation);
294 551 : }
295 :
296 :
297 765 : SM_STATE(AUTH_PAE, AUTHENTICATED)
298 : {
299 765 : char *extra = "";
300 :
301 765 : if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATING && sm->authSuccess)
302 765 : sm->authAuthSuccessesWhileAuthenticating++;
303 :
304 765 : SM_ENTRY_MA(AUTH_PAE, AUTHENTICATED, auth_pae);
305 :
306 765 : sm->authPortStatus = Authorized;
307 765 : setPortAuthorized();
308 765 : sm->reAuthCount = 0;
309 765 : if (sm->flags & EAPOL_SM_PREAUTH)
310 4 : extra = " (pre-authentication)";
311 761 : else if (sm->flags & EAPOL_SM_FROM_PMKSA_CACHE)
312 34 : extra = " (PMKSA cache)";
313 1530 : eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_INFO,
314 : "authenticated - EAP type: %d (%s)%s",
315 765 : sm->eap_type_authsrv,
316 765 : eap_server_get_name(0, sm->eap_type_authsrv),
317 : extra);
318 1530 : sm->eapol->cb.finished(sm->eapol->conf.ctx, sm->sta, 1,
319 765 : sm->flags & EAPOL_SM_PREAUTH, sm->remediation);
320 765 : }
321 :
322 :
323 1723 : SM_STATE(AUTH_PAE, AUTHENTICATING)
324 : {
325 1723 : SM_ENTRY_MA(AUTH_PAE, AUTHENTICATING, auth_pae);
326 :
327 1723 : sm->eapolStart = FALSE;
328 1723 : sm->authSuccess = FALSE;
329 1723 : sm->authFail = FALSE;
330 1723 : sm->authTimeout = FALSE;
331 1723 : sm->authStart = TRUE;
332 1723 : sm->keyRun = FALSE;
333 1723 : sm->keyDone = FALSE;
334 1723 : }
335 :
336 :
337 29 : SM_STATE(AUTH_PAE, ABORTING)
338 : {
339 29 : if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATING) {
340 29 : if (sm->authTimeout)
341 1 : sm->authAuthTimeoutsWhileAuthenticating++;
342 29 : if (sm->eapolStart)
343 28 : sm->authAuthEapStartsWhileAuthenticating++;
344 29 : if (sm->eapolLogoff)
345 0 : sm->authAuthEapLogoffWhileAuthenticating++;
346 : }
347 :
348 29 : SM_ENTRY_MA(AUTH_PAE, ABORTING, auth_pae);
349 :
350 29 : sm->authAbort = TRUE;
351 29 : sm->keyRun = FALSE;
352 29 : sm->keyDone = FALSE;
353 29 : }
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 59300 : SM_STEP(AUTH_PAE)
381 : {
382 117058 : if ((sm->portControl == Auto && sm->portMode != sm->portControl) ||
383 115516 : sm->initialize || !sm->eap_if->portEnabled)
384 7476 : SM_ENTER_GLOBAL(AUTH_PAE, INITIALIZE);
385 51826 : 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 51825 : 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 51822 : switch (sm->auth_pae_state) {
395 : case AUTH_PAE_INITIALIZE:
396 1608 : SM_ENTER(AUTH_PAE, DISCONNECTED);
397 1608 : break;
398 : case AUTH_PAE_DISCONNECTED:
399 1608 : SM_ENTER(AUTH_PAE, RESTART);
400 1608 : break;
401 : case AUTH_PAE_RESTART:
402 3446 : if (!sm->eap_if->eapRestart)
403 1723 : SM_ENTER(AUTH_PAE, CONNECTING);
404 3446 : 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 1723 : if (sm->eapolLogoff || sm->reAuthCount > sm->reAuthMax)
411 0 : SM_ENTER(AUTH_PAE, DISCONNECTED);
412 3443 : else if ((sm->eap_if->eapReq &&
413 1723 : sm->reAuthCount <= sm->reAuthMax) ||
414 6 : sm->eap_if->eapSuccess || sm->eap_if->eapFail)
415 1723 : SM_ENTER(AUTH_PAE, AUTHENTICATING);
416 1723 : break;
417 : case AUTH_PAE_AUTHENTICATED:
418 1092 : if (sm->eapolStart || sm->reAuthenticate)
419 86 : SM_ENTER(AUTH_PAE, RESTART);
420 1006 : else if (sm->eapolLogoff || !sm->portValid)
421 2 : SM_ENTER(AUTH_PAE, DISCONNECTED);
422 1092 : break;
423 : case AUTH_PAE_AUTHENTICATING:
424 42314 : if (sm->authSuccess && sm->portValid)
425 765 : SM_ENTER(AUTH_PAE, AUTHENTICATED);
426 82547 : else if (sm->authFail ||
427 40998 : (sm->keyDone && !sm->portValid))
428 551 : SM_ENTER(AUTH_PAE, HELD);
429 81968 : else if (sm->eapolStart || sm->eapolLogoff ||
430 40970 : sm->authTimeout)
431 29 : SM_ENTER(AUTH_PAE, ABORTING);
432 42314 : break;
433 : case AUTH_PAE_ABORTING:
434 29 : if (sm->eapolLogoff && !sm->authAbort)
435 0 : SM_ENTER(AUTH_PAE, DISCONNECTED);
436 29 : else if (!sm->eapolLogoff && !sm->authAbort)
437 29 : SM_ENTER(AUTH_PAE, RESTART);
438 29 : 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 59300 : }
450 :
451 :
452 :
453 : /* Backend Authentication state machine */
454 :
455 1574 : SM_STATE(BE_AUTH, INITIALIZE)
456 : {
457 1574 : SM_ENTRY_MA(BE_AUTH, INITIALIZE, be_auth);
458 :
459 1574 : abortAuth();
460 1574 : sm->eap_if->eapNoReq = FALSE;
461 1574 : sm->authAbort = FALSE;
462 1574 : }
463 :
464 :
465 7078 : SM_STATE(BE_AUTH, REQUEST)
466 : {
467 7078 : SM_ENTRY_MA(BE_AUTH, REQUEST, be_auth);
468 :
469 7078 : txReq();
470 7078 : sm->eap_if->eapReq = FALSE;
471 7078 : 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 7078 : sm->eapolEap = FALSE;
485 7078 : }
486 :
487 :
488 6687 : SM_STATE(BE_AUTH, RESPONSE)
489 : {
490 6687 : SM_ENTRY_MA(BE_AUTH, RESPONSE, be_auth);
491 :
492 6687 : sm->authTimeout = FALSE;
493 6687 : sm->eapolEap = FALSE;
494 6687 : sm->eap_if->eapNoReq = FALSE;
495 6687 : sm->aWhile = sm->serverTimeout;
496 6687 : sm->eap_if->eapResp = TRUE;
497 : /* sendRespToServer(); */
498 6687 : sm->backendResponses++;
499 6687 : }
500 :
501 :
502 753 : SM_STATE(BE_AUTH, SUCCESS)
503 : {
504 753 : SM_ENTRY_MA(BE_AUTH, SUCCESS, be_auth);
505 :
506 753 : txReq();
507 753 : sm->authSuccess = TRUE;
508 753 : sm->keyRun = TRUE;
509 753 : }
510 :
511 :
512 550 : SM_STATE(BE_AUTH, FAIL)
513 : {
514 550 : SM_ENTRY_MA(BE_AUTH, FAIL, be_auth);
515 :
516 550 : txReq();
517 550 : sm->authFail = TRUE;
518 550 : }
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 2911 : SM_STATE(BE_AUTH, IDLE)
530 : {
531 2911 : SM_ENTRY_MA(BE_AUTH, IDLE, be_auth);
532 :
533 2911 : sm->authStart = FALSE;
534 2911 : }
535 :
536 :
537 23 : SM_STATE(BE_AUTH, IGNORE)
538 : {
539 23 : SM_ENTRY_MA(BE_AUTH, IGNORE, be_auth);
540 :
541 23 : sm->eap_if->eapNoReq = FALSE;
542 23 : }
543 :
544 :
545 59300 : SM_STEP(BE_AUTH)
546 : {
547 59300 : if (sm->portControl != Auto || sm->initialize || sm->authAbort) {
548 1574 : SM_ENTER_GLOBAL(BE_AUTH, INITIALIZE);
549 60874 : return;
550 : }
551 :
552 57726 : switch (sm->be_auth_state) {
553 : case BE_AUTH_INITIALIZE:
554 1571 : SM_ENTER(BE_AUTH, IDLE);
555 1571 : break;
556 : case BE_AUTH_REQUEST:
557 18436 : if (sm->eapolEap)
558 6686 : SM_ENTER(BE_AUTH, RESPONSE);
559 11750 : else if (sm->eap_if->eapReq)
560 5 : SM_ENTER(BE_AUTH, REQUEST);
561 11745 : else if (sm->eap_if->eapTimeout)
562 0 : SM_ENTER(BE_AUTH, TIMEOUT);
563 18436 : break;
564 : case BE_AUTH_RESPONSE:
565 21074 : if (sm->eap_if->eapNoReq)
566 23 : SM_ENTER(BE_AUTH, IGNORE);
567 21074 : if (sm->eap_if->eapReq) {
568 5351 : sm->backendAccessChallenges++;
569 5351 : SM_ENTER(BE_AUTH, REQUEST);
570 15723 : } else if (sm->aWhile == 0)
571 1 : SM_ENTER(BE_AUTH, TIMEOUT);
572 15722 : else if (sm->eap_if->eapFail) {
573 547 : sm->backendAuthFails++;
574 547 : SM_ENTER(BE_AUTH, FAIL);
575 15175 : } else if (sm->eap_if->eapSuccess) {
576 753 : sm->backendAuthSuccesses++;
577 753 : SM_ENTER(BE_AUTH, SUCCESS);
578 : }
579 21074 : break;
580 : case BE_AUTH_SUCCESS:
581 790 : SM_ENTER(BE_AUTH, IDLE);
582 790 : break;
583 : case BE_AUTH_FAIL:
584 550 : SM_ENTER(BE_AUTH, IDLE);
585 550 : break;
586 : case BE_AUTH_TIMEOUT:
587 0 : SM_ENTER(BE_AUTH, IDLE);
588 0 : break;
589 : case BE_AUTH_IDLE:
590 15288 : if (sm->eap_if->eapFail && sm->authStart)
591 3 : SM_ENTER(BE_AUTH, FAIL);
592 15285 : else if (sm->eap_if->eapReq && sm->authStart)
593 1720 : SM_ENTER(BE_AUTH, REQUEST);
594 13565 : else if (sm->eap_if->eapSuccess && sm->authStart)
595 0 : SM_ENTER(BE_AUTH, SUCCESS);
596 15288 : break;
597 : case BE_AUTH_IGNORE:
598 17 : if (sm->eapolEap)
599 1 : SM_ENTER(BE_AUTH, RESPONSE);
600 16 : else if (sm->eap_if->eapReq)
601 2 : SM_ENTER(BE_AUTH, REQUEST);
602 14 : else if (sm->eap_if->eapTimeout)
603 0 : SM_ENTER(BE_AUTH, TIMEOUT);
604 17 : break;
605 : }
606 : }
607 :
608 :
609 :
610 : /* Reauthentication Timer state machine */
611 :
612 51815 : SM_STATE(REAUTH_TIMER, INITIALIZE)
613 : {
614 51815 : SM_ENTRY_MA(REAUTH_TIMER, INITIALIZE, reauth_timer);
615 :
616 51815 : sm->reAuthWhen = sm->reAuthPeriod;
617 51815 : }
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 59300 : SM_STEP(REAUTH_TIMER)
631 : {
632 117055 : if (sm->portControl != Auto || sm->initialize ||
633 65242 : sm->authPortStatus == Unauthorized || !sm->reAuthEnabled) {
634 51814 : SM_ENTER_GLOBAL(REAUTH_TIMER, INITIALIZE);
635 111114 : return;
636 : }
637 :
638 7486 : switch (sm->reauth_timer_state) {
639 : case REAUTH_TIMER_INITIALIZE:
640 7485 : if (sm->reAuthWhen == 0)
641 1 : SM_ENTER(REAUTH_TIMER, REAUTHENTICATE);
642 7485 : 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 1546 : SM_STATE(AUTH_KEY_TX, NO_KEY_TRANSMIT)
654 : {
655 1546 : SM_ENTRY_MA(AUTH_KEY_TX, NO_KEY_TRANSMIT, auth_key_tx);
656 1546 : }
657 :
658 :
659 4 : SM_STATE(AUTH_KEY_TX, KEY_TRANSMIT)
660 : {
661 4 : SM_ENTRY_MA(AUTH_KEY_TX, KEY_TRANSMIT, auth_key_tx);
662 :
663 4 : txKey();
664 4 : sm->eap_if->eapKeyAvailable = FALSE;
665 4 : sm->keyDone = TRUE;
666 4 : }
667 :
668 :
669 59300 : SM_STEP(AUTH_KEY_TX)
670 : {
671 59300 : if (sm->initialize || sm->portControl != Auto) {
672 1545 : SM_ENTER_GLOBAL(AUTH_KEY_TX, NO_KEY_TRANSMIT);
673 60845 : return;
674 : }
675 :
676 57755 : switch (sm->auth_key_tx_state) {
677 : case AUTH_KEY_TX_NO_KEY_TRANSMIT:
678 57751 : if (sm->keyTxEnabled && sm->eap_if->eapKeyAvailable &&
679 8 : sm->keyRun && !(sm->flags & EAPOL_SM_USES_WPA))
680 4 : SM_ENTER(AUTH_KEY_TX, KEY_TRANSMIT);
681 57747 : break;
682 : case AUTH_KEY_TX_KEY_TRANSMIT:
683 8 : if (!sm->keyTxEnabled || !sm->keyRun)
684 1 : SM_ENTER(AUTH_KEY_TX, NO_KEY_TRANSMIT);
685 7 : else if (sm->eap_if->eapKeyAvailable)
686 0 : SM_ENTER(AUTH_KEY_TX, KEY_TRANSMIT);
687 8 : break;
688 : }
689 : }
690 :
691 :
692 :
693 : /* Key Receive state machine */
694 :
695 8028 : SM_STATE(KEY_RX, NO_KEY_RECEIVE)
696 : {
697 8028 : SM_ENTRY_MA(KEY_RX, NO_KEY_RECEIVE, key_rx);
698 8028 : }
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 59300 : SM_STEP(KEY_RX)
711 : {
712 59300 : if (sm->initialize || !sm->eap_if->portEnabled) {
713 8028 : SM_ENTER_GLOBAL(KEY_RX, NO_KEY_RECEIVE);
714 67328 : return;
715 : }
716 :
717 51272 : switch (sm->key_rx_state) {
718 : case KEY_RX_NO_KEY_RECEIVE:
719 51272 : if (sm->rxKey)
720 0 : SM_ENTER(KEY_RX, KEY_RECEIVE);
721 51272 : 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 1541 : SM_STATE(CTRL_DIR, FORCE_BOTH)
734 : {
735 1541 : SM_ENTRY_MA(CTRL_DIR, FORCE_BOTH, ctrl_dir);
736 1541 : sm->operControlledDirections = Both;
737 1541 : }
738 :
739 :
740 1541 : SM_STATE(CTRL_DIR, IN_OR_BOTH)
741 : {
742 1541 : SM_ENTRY_MA(CTRL_DIR, IN_OR_BOTH, ctrl_dir);
743 1541 : sm->operControlledDirections = sm->adminControlledDirections;
744 1541 : }
745 :
746 :
747 59300 : SM_STEP(CTRL_DIR)
748 : {
749 59300 : if (sm->initialize) {
750 1541 : SM_ENTER_GLOBAL(CTRL_DIR, IN_OR_BOTH);
751 60841 : return;
752 : }
753 :
754 57759 : switch (sm->ctrl_dir_state) {
755 : case CTRL_DIR_FORCE_BOTH:
756 56218 : if (sm->eap_if->portEnabled && sm->operEdge)
757 0 : SM_ENTER(CTRL_DIR, IN_OR_BOTH);
758 56218 : break;
759 : case CTRL_DIR_IN_OR_BOTH:
760 3082 : if (sm->operControlledDirections !=
761 1541 : sm->adminControlledDirections)
762 0 : SM_ENTER(CTRL_DIR, IN_OR_BOTH);
763 1541 : if (!sm->eap_if->portEnabled || !sm->operEdge)
764 1541 : SM_ENTER(CTRL_DIR, FORCE_BOTH);
765 1541 : break;
766 : }
767 : }
768 :
769 :
770 :
771 : struct eapol_state_machine *
772 1542 : 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 1542 : if (eapol == NULL)
781 0 : return NULL;
782 :
783 1542 : sm = os_zalloc(sizeof(*sm));
784 1542 : if (sm == NULL) {
785 1 : wpa_printf(MSG_DEBUG, "IEEE 802.1X state machine allocation "
786 : "failed");
787 1 : return NULL;
788 : }
789 1541 : sm->radius_identifier = -1;
790 1541 : os_memcpy(sm->addr, addr, ETH_ALEN);
791 1541 : sm->flags = flags;
792 :
793 1541 : sm->eapol = eapol;
794 1541 : sm->sta = sta_ctx;
795 :
796 : /* Set default values for state machine constants */
797 1541 : sm->auth_pae_state = AUTH_PAE_INITIALIZE;
798 1541 : sm->quietPeriod = AUTH_PAE_DEFAULT_quietPeriod;
799 1541 : sm->reAuthMax = AUTH_PAE_DEFAULT_reAuthMax;
800 :
801 1541 : sm->be_auth_state = BE_AUTH_INITIALIZE;
802 1541 : sm->serverTimeout = BE_AUTH_DEFAULT_serverTimeout;
803 :
804 1541 : sm->reauth_timer_state = REAUTH_TIMER_INITIALIZE;
805 1541 : sm->reAuthPeriod = eapol->conf.eap_reauth_period;
806 1541 : sm->reAuthEnabled = eapol->conf.eap_reauth_period > 0 ? TRUE : FALSE;
807 :
808 1541 : sm->auth_key_tx_state = AUTH_KEY_TX_NO_KEY_TRANSMIT;
809 :
810 1541 : sm->key_rx_state = KEY_RX_NO_KEY_RECEIVE;
811 :
812 1541 : sm->ctrl_dir_state = CTRL_DIR_IN_OR_BOTH;
813 :
814 1541 : sm->portControl = Auto;
815 :
816 1583 : if (!eapol->conf.wpa &&
817 81 : (eapol->default_wep_key || eapol->conf.individual_wep_key_len > 0))
818 3 : sm->keyTxEnabled = TRUE;
819 : else
820 1538 : sm->keyTxEnabled = FALSE;
821 1541 : if (eapol->conf.wpa)
822 1499 : sm->portValid = FALSE;
823 : else
824 42 : sm->portValid = TRUE;
825 :
826 1541 : os_memset(&eap_conf, 0, sizeof(eap_conf));
827 1541 : eap_conf.eap_server = eapol->conf.eap_server;
828 1541 : eap_conf.ssl_ctx = eapol->conf.ssl_ctx;
829 1541 : eap_conf.msg_ctx = eapol->conf.msg_ctx;
830 1541 : eap_conf.eap_sim_db_priv = eapol->conf.eap_sim_db_priv;
831 1541 : eap_conf.pac_opaque_encr_key = eapol->conf.pac_opaque_encr_key;
832 1541 : eap_conf.eap_fast_a_id = eapol->conf.eap_fast_a_id;
833 1541 : eap_conf.eap_fast_a_id_len = eapol->conf.eap_fast_a_id_len;
834 1541 : eap_conf.eap_fast_a_id_info = eapol->conf.eap_fast_a_id_info;
835 1541 : eap_conf.eap_fast_prov = eapol->conf.eap_fast_prov;
836 1541 : eap_conf.pac_key_lifetime = eapol->conf.pac_key_lifetime;
837 1541 : eap_conf.pac_key_refresh_time = eapol->conf.pac_key_refresh_time;
838 1541 : eap_conf.eap_sim_aka_result_ind = eapol->conf.eap_sim_aka_result_ind;
839 1541 : eap_conf.tnc = eapol->conf.tnc;
840 1541 : eap_conf.wps = eapol->conf.wps;
841 1541 : eap_conf.assoc_wps_ie = assoc_wps_ie;
842 1541 : eap_conf.assoc_p2p_ie = assoc_p2p_ie;
843 1541 : eap_conf.peer_addr = addr;
844 1541 : eap_conf.fragment_size = eapol->conf.fragment_size;
845 1541 : eap_conf.pwd_group = eapol->conf.pwd_group;
846 1541 : eap_conf.pbc_in_m1 = eapol->conf.pbc_in_m1;
847 1541 : eap_conf.server_id = eapol->conf.server_id;
848 1541 : eap_conf.server_id_len = eapol->conf.server_id_len;
849 1541 : eap_conf.erp = eapol->conf.erp;
850 1541 : eap_conf.tls_session_lifetime = eapol->conf.tls_session_lifetime;
851 1541 : sm->eap = eap_server_sm_init(sm, &eapol_cb, &eap_conf);
852 1541 : if (sm->eap == NULL) {
853 0 : eapol_auth_free(sm);
854 0 : return NULL;
855 : }
856 1541 : sm->eap_if = eap_get_interface(sm->eap);
857 :
858 1541 : eapol_auth_initialize(sm);
859 :
860 1541 : 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 1541 : if (radius_cui)
866 1 : sm->radius_cui = wpabuf_alloc_copy(radius_cui,
867 : os_strlen(radius_cui));
868 :
869 1541 : sm->acct_multi_session_id_lo = eapol->acct_multi_session_id_lo++;
870 1541 : if (eapol->acct_multi_session_id_lo == 0)
871 0 : eapol->acct_multi_session_id_hi++;
872 1541 : sm->acct_multi_session_id_hi = eapol->acct_multi_session_id_hi;
873 :
874 1541 : return sm;
875 : }
876 :
877 :
878 1541 : void eapol_auth_free(struct eapol_state_machine *sm)
879 : {
880 1541 : if (sm == NULL)
881 1541 : return;
882 :
883 1541 : eloop_cancel_timeout(eapol_port_timers_tick, NULL, sm);
884 1541 : eloop_cancel_timeout(eapol_sm_step_cb, sm, NULL);
885 1541 : if (sm->eap)
886 1541 : eap_server_sm_deinit(sm->eap);
887 1541 : os_free(sm);
888 : }
889 :
890 :
891 330641 : static int eapol_sm_sta_entry_alive(struct eapol_authenticator *eapol,
892 : const u8 *addr)
893 : {
894 330641 : return eapol->cb.sta_entry_alive(eapol->conf.ctx, addr);
895 : }
896 :
897 :
898 22239 : static void eapol_sm_step_run(struct eapol_state_machine *sm)
899 : {
900 22239 : struct eapol_authenticator *eapol = sm->eapol;
901 : u8 addr[ETH_ALEN];
902 : unsigned int prev_auth_pae, prev_be_auth, prev_reauth_timer,
903 : prev_auth_key_tx, prev_key_rx, prev_ctrl_dir;
904 22239 : int max_steps = 100;
905 :
906 22239 : os_memcpy(addr, sm->addr, ETH_ALEN);
907 :
908 : /*
909 : * Allow EAPOL state machines to run as long as there are state
910 : * changes, but exit and return here through event loop if more than
911 : * 100 steps is needed as a precaution against infinite loops inside
912 : * eloop callback.
913 : */
914 : restart:
915 59300 : prev_auth_pae = sm->auth_pae_state;
916 59300 : prev_be_auth = sm->be_auth_state;
917 59300 : prev_reauth_timer = sm->reauth_timer_state;
918 59300 : prev_auth_key_tx = sm->auth_key_tx_state;
919 59300 : prev_key_rx = sm->key_rx_state;
920 59300 : prev_ctrl_dir = sm->ctrl_dir_state;
921 :
922 59300 : SM_STEP_RUN(AUTH_PAE);
923 59300 : if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
924 59300 : SM_STEP_RUN(BE_AUTH);
925 59300 : if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
926 59300 : SM_STEP_RUN(REAUTH_TIMER);
927 59300 : if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
928 59300 : SM_STEP_RUN(AUTH_KEY_TX);
929 59300 : if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
930 59300 : SM_STEP_RUN(KEY_RX);
931 59300 : if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
932 59300 : SM_STEP_RUN(CTRL_DIR);
933 :
934 109900 : if (prev_auth_pae != sm->auth_pae_state ||
935 85621 : prev_be_auth != sm->be_auth_state ||
936 70041 : prev_reauth_timer != sm->reauth_timer_state ||
937 70038 : prev_auth_key_tx != sm->auth_key_tx_state ||
938 70036 : prev_key_rx != sm->key_rx_state ||
939 35018 : prev_ctrl_dir != sm->ctrl_dir_state) {
940 24282 : if (--max_steps > 0)
941 24282 : goto restart;
942 : /* Re-run from eloop timeout */
943 0 : eapol_auth_step(sm);
944 0 : return;
945 : }
946 :
947 35018 : if (eapol_sm_sta_entry_alive(eapol, addr) && sm->eap) {
948 31936 : if (eap_server_sm_step(sm->eap)) {
949 12779 : if (--max_steps > 0)
950 12779 : goto restart;
951 : /* Re-run from eloop timeout */
952 0 : eapol_auth_step(sm);
953 0 : return;
954 : }
955 :
956 : /* TODO: find a better location for this */
957 19157 : if (sm->eap_if->aaaEapResp) {
958 3769 : sm->eap_if->aaaEapResp = FALSE;
959 3769 : if (sm->eap_if->aaaEapRespData == NULL) {
960 1 : wpa_printf(MSG_DEBUG, "EAPOL: aaaEapResp set, "
961 : "but no aaaEapRespData available");
962 1 : return;
963 : }
964 15072 : sm->eapol->cb.aaa_send(
965 3768 : sm->eapol->conf.ctx, sm->sta,
966 3768 : wpabuf_head(sm->eap_if->aaaEapRespData),
967 3768 : wpabuf_len(sm->eap_if->aaaEapRespData));
968 : }
969 : }
970 :
971 22238 : if (eapol_sm_sta_entry_alive(eapol, addr))
972 19156 : sm->eapol->cb.eapol_event(sm->eapol->conf.ctx, sm->sta,
973 : EAPOL_AUTH_SM_CHANGE);
974 : }
975 :
976 :
977 18800 : static void eapol_sm_step_cb(void *eloop_ctx, void *timeout_ctx)
978 : {
979 18800 : struct eapol_state_machine *sm = eloop_ctx;
980 18800 : eapol_sm_step_run(sm);
981 18800 : }
982 :
983 :
984 : /**
985 : * eapol_auth_step - Advance EAPOL state machines
986 : * @sm: EAPOL state machine
987 : *
988 : * This function is called to advance EAPOL state machines after any change
989 : * that could affect their state.
990 : */
991 22120 : void eapol_auth_step(struct eapol_state_machine *sm)
992 : {
993 : /*
994 : * Run eapol_sm_step_run from a registered timeout to make sure that
995 : * other possible timeouts/events are processed and to avoid long
996 : * function call chains.
997 : */
998 :
999 22120 : eloop_register_timeout(0, 0, eapol_sm_step_cb, sm, NULL);
1000 22120 : }
1001 :
1002 :
1003 1541 : static void eapol_auth_initialize(struct eapol_state_machine *sm)
1004 : {
1005 1541 : sm->initializing = TRUE;
1006 : /* Initialize the state machines by asserting initialize and then
1007 : * deasserting it after one step */
1008 1541 : sm->initialize = TRUE;
1009 1541 : eapol_sm_step_run(sm);
1010 1541 : sm->initialize = FALSE;
1011 1541 : eapol_sm_step_run(sm);
1012 1541 : sm->initializing = FALSE;
1013 :
1014 : /* Start one second tick for port timers state machine */
1015 1541 : eloop_cancel_timeout(eapol_port_timers_tick, NULL, sm);
1016 1541 : eloop_register_timeout(1, 0, eapol_port_timers_tick, NULL, sm);
1017 1541 : }
1018 :
1019 :
1020 733 : static int eapol_sm_get_eap_user(void *ctx, const u8 *identity,
1021 : size_t identity_len, int phase2,
1022 : struct eap_user *user)
1023 : {
1024 733 : struct eapol_state_machine *sm = ctx;
1025 : int ret;
1026 :
1027 733 : ret = sm->eapol->cb.get_eap_user(sm->eapol->conf.ctx, identity,
1028 : identity_len, phase2, user);
1029 733 : if (user->remediation)
1030 0 : sm->remediation = 1;
1031 733 : return ret;
1032 : }
1033 :
1034 :
1035 1691 : static const char * eapol_sm_get_eap_req_id_text(void *ctx, size_t *len)
1036 : {
1037 1691 : struct eapol_state_machine *sm = ctx;
1038 1691 : *len = sm->eapol->conf.eap_req_id_text_len;
1039 1691 : return sm->eapol->conf.eap_req_id_text;
1040 : }
1041 :
1042 :
1043 1669 : static int eapol_sm_get_erp_send_reauth_start(void *ctx)
1044 : {
1045 1669 : struct eapol_state_machine *sm = ctx;
1046 1669 : return sm->eapol->conf.erp_send_reauth_start;
1047 : }
1048 :
1049 :
1050 46 : static const char * eapol_sm_get_erp_domain(void *ctx)
1051 : {
1052 46 : struct eapol_state_machine *sm = ctx;
1053 46 : return sm->eapol->conf.erp_domain;
1054 : }
1055 :
1056 :
1057 5 : static struct eap_server_erp_key * eapol_sm_erp_get_key(void *ctx,
1058 : const char *keyname)
1059 : {
1060 5 : struct eapol_state_machine *sm = ctx;
1061 5 : return sm->eapol->cb.erp_get_key(sm->eapol->conf.ctx, keyname);
1062 : }
1063 :
1064 :
1065 5 : static int eapol_sm_erp_add_key(void *ctx, struct eap_server_erp_key *erp)
1066 : {
1067 5 : struct eapol_state_machine *sm = ctx;
1068 5 : return sm->eapol->cb.erp_add_key(sm->eapol->conf.ctx, erp);
1069 : }
1070 :
1071 :
1072 : static const struct eapol_callbacks eapol_cb =
1073 : {
1074 : eapol_sm_get_eap_user,
1075 : eapol_sm_get_eap_req_id_text,
1076 : NULL,
1077 : eapol_sm_get_erp_send_reauth_start,
1078 : eapol_sm_get_erp_domain,
1079 : eapol_sm_erp_get_key,
1080 : eapol_sm_erp_add_key,
1081 : };
1082 :
1083 :
1084 47 : int eapol_auth_eap_pending_cb(struct eapol_state_machine *sm, void *ctx)
1085 : {
1086 47 : if (sm == NULL || ctx == NULL || ctx != sm->eap)
1087 0 : return -1;
1088 :
1089 47 : eap_sm_pending_cb(sm->eap);
1090 47 : eapol_auth_step(sm);
1091 :
1092 47 : return 0;
1093 : }
1094 :
1095 :
1096 2 : void eapol_auth_reauthenticate(struct eapol_state_machine *sm)
1097 : {
1098 12 : wpa_printf(MSG_DEBUG, "EAPOL: External reauthentication trigger for "
1099 12 : MACSTR, MAC2STR(sm->addr));
1100 2 : sm->reAuthenticate = TRUE;
1101 2 : eapol_auth_step(sm);
1102 2 : }
1103 :
1104 :
1105 18 : int eapol_auth_set_conf(struct eapol_state_machine *sm, const char *param,
1106 : const char *value)
1107 : {
1108 108 : wpa_printf(MSG_DEBUG, "EAPOL: External configuration operation for "
1109 : MACSTR " - param=%s value=%s",
1110 108 : MAC2STR(sm->addr), param, value);
1111 :
1112 18 : if (os_strcasecmp(param, "AdminControlledDirections") == 0) {
1113 3 : if (os_strcmp(value, "Both") == 0)
1114 1 : sm->adminControlledDirections = Both;
1115 2 : else if (os_strcmp(value, "In") == 0)
1116 1 : sm->adminControlledDirections = In;
1117 : else
1118 1 : return -1;
1119 2 : eapol_auth_step(sm);
1120 2 : return 0;
1121 : }
1122 :
1123 15 : if (os_strcasecmp(param, "AdminControlledPortControl") == 0) {
1124 4 : if (os_strcmp(value, "ForceAuthorized") == 0)
1125 1 : sm->portControl = ForceAuthorized;
1126 3 : else if (os_strcmp(value, "ForceUnauthorized") == 0)
1127 1 : sm->portControl = ForceUnauthorized;
1128 2 : else if (os_strcmp(value, "Auto") == 0)
1129 1 : sm->portControl = Auto;
1130 : else
1131 1 : return -1;
1132 3 : eapol_auth_step(sm);
1133 3 : return 0;
1134 : }
1135 :
1136 11 : if (os_strcasecmp(param, "quietPeriod") == 0) {
1137 1 : sm->quietPeriod = atoi(value);
1138 1 : return 0;
1139 : }
1140 :
1141 10 : if (os_strcasecmp(param, "serverTimeout") == 0) {
1142 2 : sm->serverTimeout = atoi(value);
1143 2 : return 0;
1144 : }
1145 :
1146 8 : if (os_strcasecmp(param, "reAuthPeriod") == 0) {
1147 1 : sm->reAuthPeriod = atoi(value);
1148 1 : return 0;
1149 : }
1150 :
1151 7 : if (os_strcasecmp(param, "reAuthEnabled") == 0) {
1152 3 : if (os_strcmp(value, "TRUE") == 0)
1153 1 : sm->reAuthEnabled = TRUE;
1154 2 : else if (os_strcmp(value, "FALSE") == 0)
1155 1 : sm->reAuthEnabled = FALSE;
1156 : else
1157 1 : return -1;
1158 2 : eapol_auth_step(sm);
1159 2 : return 0;
1160 : }
1161 :
1162 4 : if (os_strcasecmp(param, "KeyTransmissionEnabled") == 0) {
1163 3 : if (os_strcmp(value, "TRUE") == 0)
1164 1 : sm->keyTxEnabled = TRUE;
1165 2 : else if (os_strcmp(value, "FALSE") == 0)
1166 1 : sm->keyTxEnabled = FALSE;
1167 : else
1168 1 : return -1;
1169 2 : eapol_auth_step(sm);
1170 2 : return 0;
1171 : }
1172 :
1173 1 : return -1;
1174 : }
1175 :
1176 :
1177 2048 : static int eapol_auth_conf_clone(struct eapol_auth_config *dst,
1178 : struct eapol_auth_config *src)
1179 : {
1180 2048 : dst->ctx = src->ctx;
1181 2048 : dst->eap_reauth_period = src->eap_reauth_period;
1182 2048 : dst->wpa = src->wpa;
1183 2048 : dst->individual_wep_key_len = src->individual_wep_key_len;
1184 2048 : dst->eap_server = src->eap_server;
1185 2048 : dst->ssl_ctx = src->ssl_ctx;
1186 2048 : dst->msg_ctx = src->msg_ctx;
1187 2048 : dst->eap_sim_db_priv = src->eap_sim_db_priv;
1188 2048 : os_free(dst->eap_req_id_text);
1189 2048 : dst->pwd_group = src->pwd_group;
1190 2048 : dst->pbc_in_m1 = src->pbc_in_m1;
1191 2048 : dst->server_id = src->server_id;
1192 2048 : dst->server_id_len = src->server_id_len;
1193 2048 : if (src->eap_req_id_text) {
1194 1 : dst->eap_req_id_text = os_malloc(src->eap_req_id_text_len);
1195 1 : if (dst->eap_req_id_text == NULL)
1196 0 : return -1;
1197 1 : os_memcpy(dst->eap_req_id_text, src->eap_req_id_text,
1198 : src->eap_req_id_text_len);
1199 1 : dst->eap_req_id_text_len = src->eap_req_id_text_len;
1200 : } else {
1201 2047 : dst->eap_req_id_text = NULL;
1202 2047 : dst->eap_req_id_text_len = 0;
1203 : }
1204 2048 : if (src->pac_opaque_encr_key) {
1205 16 : dst->pac_opaque_encr_key = os_malloc(16);
1206 16 : if (dst->pac_opaque_encr_key == NULL)
1207 0 : goto fail;
1208 16 : os_memcpy(dst->pac_opaque_encr_key, src->pac_opaque_encr_key,
1209 : 16);
1210 : } else
1211 2032 : dst->pac_opaque_encr_key = NULL;
1212 2048 : if (src->eap_fast_a_id) {
1213 16 : dst->eap_fast_a_id = os_malloc(src->eap_fast_a_id_len);
1214 16 : if (dst->eap_fast_a_id == NULL)
1215 0 : goto fail;
1216 16 : os_memcpy(dst->eap_fast_a_id, src->eap_fast_a_id,
1217 : src->eap_fast_a_id_len);
1218 16 : dst->eap_fast_a_id_len = src->eap_fast_a_id_len;
1219 : } else
1220 2032 : dst->eap_fast_a_id = NULL;
1221 2048 : if (src->eap_fast_a_id_info) {
1222 16 : dst->eap_fast_a_id_info = os_strdup(src->eap_fast_a_id_info);
1223 16 : if (dst->eap_fast_a_id_info == NULL)
1224 0 : goto fail;
1225 : } else
1226 2032 : dst->eap_fast_a_id_info = NULL;
1227 2048 : dst->eap_fast_prov = src->eap_fast_prov;
1228 2048 : dst->pac_key_lifetime = src->pac_key_lifetime;
1229 2048 : dst->pac_key_refresh_time = src->pac_key_refresh_time;
1230 2048 : dst->eap_sim_aka_result_ind = src->eap_sim_aka_result_ind;
1231 2048 : dst->tnc = src->tnc;
1232 2048 : dst->wps = src->wps;
1233 2048 : dst->fragment_size = src->fragment_size;
1234 :
1235 2048 : os_free(dst->erp_domain);
1236 2048 : if (src->erp_domain) {
1237 9 : dst->erp_domain = os_strdup(src->erp_domain);
1238 9 : if (dst->erp_domain == NULL)
1239 0 : goto fail;
1240 : } else {
1241 2039 : dst->erp_domain = NULL;
1242 : }
1243 2048 : dst->erp_send_reauth_start = src->erp_send_reauth_start;
1244 2048 : dst->erp = src->erp;
1245 2048 : dst->tls_session_lifetime = src->tls_session_lifetime;
1246 :
1247 2048 : return 0;
1248 :
1249 : fail:
1250 0 : eapol_auth_conf_free(dst);
1251 0 : return -1;
1252 : }
1253 :
1254 :
1255 2048 : static void eapol_auth_conf_free(struct eapol_auth_config *conf)
1256 : {
1257 2048 : os_free(conf->eap_req_id_text);
1258 2048 : conf->eap_req_id_text = NULL;
1259 2048 : os_free(conf->pac_opaque_encr_key);
1260 2048 : conf->pac_opaque_encr_key = NULL;
1261 2048 : os_free(conf->eap_fast_a_id);
1262 2048 : conf->eap_fast_a_id = NULL;
1263 2048 : os_free(conf->eap_fast_a_id_info);
1264 2048 : conf->eap_fast_a_id_info = NULL;
1265 2048 : os_free(conf->erp_domain);
1266 2048 : conf->erp_domain = NULL;
1267 2048 : }
1268 :
1269 :
1270 2048 : struct eapol_authenticator * eapol_auth_init(struct eapol_auth_config *conf,
1271 : struct eapol_auth_cb *cb)
1272 : {
1273 : struct eapol_authenticator *eapol;
1274 : struct os_time now;
1275 :
1276 2048 : eapol = os_zalloc(sizeof(*eapol));
1277 2048 : if (eapol == NULL)
1278 0 : return NULL;
1279 :
1280 2048 : if (eapol_auth_conf_clone(&eapol->conf, conf) < 0) {
1281 0 : os_free(eapol);
1282 0 : return NULL;
1283 : }
1284 :
1285 2048 : if (conf->individual_wep_key_len > 0) {
1286 : /* use key0 in individual key and key1 in broadcast key */
1287 3 : eapol->default_wep_key_idx = 1;
1288 : }
1289 :
1290 2048 : eapol->cb.eapol_send = cb->eapol_send;
1291 2048 : eapol->cb.aaa_send = cb->aaa_send;
1292 2048 : eapol->cb.finished = cb->finished;
1293 2048 : eapol->cb.get_eap_user = cb->get_eap_user;
1294 2048 : eapol->cb.sta_entry_alive = cb->sta_entry_alive;
1295 2048 : eapol->cb.logger = cb->logger;
1296 2048 : eapol->cb.set_port_authorized = cb->set_port_authorized;
1297 2048 : eapol->cb.abort_auth = cb->abort_auth;
1298 2048 : eapol->cb.tx_key = cb->tx_key;
1299 2048 : eapol->cb.eapol_event = cb->eapol_event;
1300 2048 : eapol->cb.erp_get_key = cb->erp_get_key;
1301 2048 : eapol->cb.erp_add_key = cb->erp_add_key;
1302 :
1303 : /* Acct-Multi-Session-Id should be unique over reboots. If reliable
1304 : * clock is not available, this could be replaced with reboot counter,
1305 : * etc. */
1306 2048 : os_get_time(&now);
1307 2048 : eapol->acct_multi_session_id_hi = now.sec;
1308 :
1309 2048 : return eapol;
1310 : }
1311 :
1312 :
1313 2055 : void eapol_auth_deinit(struct eapol_authenticator *eapol)
1314 : {
1315 2055 : if (eapol == NULL)
1316 2062 : return;
1317 :
1318 2048 : eapol_auth_conf_free(&eapol->conf);
1319 2048 : os_free(eapol->default_wep_key);
1320 2048 : os_free(eapol);
1321 : }
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