contrib/hostapd-0.4.9/eapol_sm.c

   1 /*
   2  * Host AP (software wireless LAN access point) user space daemon for
   3  * Host AP kernel driver / IEEE 802.1X Authenticator - EAPOL state machine
   4  * Copyright (c) 2002-2005, Jouni Malinen <jkmaline@cc.hut.fi>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * Alternatively, this software may be distributed under the terms of BSD
  11  * license.
  12  *
  13  * See README and COPYING for more details.
  14  */
  15
  16 #include <stdlib.h>
  17 #include <stdio.h>
  18 #include <unistd.h>
  19 #include <netinet/in.h>
  20 #include <string.h>
  21 #include <sys/socket.h>
  22
  23 #include "hostapd.h"
  24 #include "ieee802_1x.h"
  25 #include "eapol_sm.h"
  26 #include "eloop.h"
  27 #include "wpa.h"
  28 #include "sta_info.h"
  29 #include "eap.h"
  30
  31 static struct eapol_callbacks eapol_cb;
  32
  33 /* EAPOL state machines are described in IEEE Std 802.1X-REV-d11, Chap. 8.2 */
  34
  35 #define setPortAuthorized() \
  36 ieee802_1x_set_sta_authorized(sm->hapd, sm->sta, 1)
  37 #define setPortUnauthorized() \
  38 ieee802_1x_set_sta_authorized(sm->hapd, sm->sta, 0)
  39
  40 /* procedures */
  41 #define txCannedFail() ieee802_1x_tx_canned_eap(sm->hapd, sm->sta, 0)
  42 #define txCannedSuccess() ieee802_1x_tx_canned_eap(sm->hapd, sm->sta, 1)
  43 #define txReq() ieee802_1x_tx_req(sm->hapd, sm->sta)
  44 #define sendRespToServer() ieee802_1x_send_resp_to_server(sm->hapd, sm->sta)
  45 #define abortAuth() ieee802_1x_abort_auth(sm->hapd, sm->sta)
  46 #define txKey() ieee802_1x_tx_key(sm->hapd, sm->sta)
  47 #define processKey() do { } while (0)
  48
  49
  50 /* Definitions for clarifying state machine implementation */
  51 #define SM_STATE(machine, state) \
  52 static void sm_ ## machine ## _ ## state ## _Enter(struct eapol_state_machine \
  53 *sm)
  54
  55 #define SM_ENTRY(machine, _state, _data) \
  56 sm->_data.state = machine ## _ ## _state; \
  57 if (sm->hapd->conf->debug >= HOSTAPD_DEBUG_MINIMAL) \
  58         printf("IEEE 802.1X: " MACSTR " " #machine " entering state " #_state \
  59                 "\n", MAC2STR(sm->addr));
  60
  61 #define SM_ENTER(machine, state) sm_ ## machine ## _ ## state ## _Enter(sm)
  62
  63 #define SM_STEP(machine) \
  64 static void sm_ ## machine ## _Step(struct eapol_state_machine *sm)
  65
  66 #define SM_STEP_RUN(machine) sm_ ## machine ## _Step(sm)
  67
  68
  69 static void eapol_sm_step_run(struct eapol_state_machine *sm);
  70 static void eapol_sm_step_cb(void *eloop_ctx, void *timeout_ctx);
  71
  72
  73 /* Port Timers state machine - implemented as a function that will be called
  74  * once a second as a registered event loop timeout */
  75
  76 static void eapol_port_timers_tick(void *eloop_ctx, void *timeout_ctx)
  77 {
  78         struct eapol_state_machine *state = timeout_ctx;
  79
  80         if (state->aWhile > 0) {
  81                 state->aWhile--;
  82                 if (state->aWhile == 0) {
  83                         wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR
  84                                    " - aWhile --> 0",
  85                                    MAC2STR(state->addr));
  86                 }
  87         }
  88
  89         if (state->quietWhile > 0) {
  90                 state->quietWhile--;
  91                 if (state->quietWhile == 0) {
  92                         wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR
  93                                    " - quietWhile --> 0",
  94                                    MAC2STR(state->addr));
  95                 }
  96         }
  97
  98         if (state->reAuthWhen > 0) {
  99                 state->reAuthWhen--;
 100                 if (state->reAuthWhen == 0) {
 101                         wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR
 102                                    " - reAuthWhen --> 0",
 103                                    MAC2STR(state->addr));
 104                 }
 105         }
 106
 107         eapol_sm_step_run(state);
 108
 109         eloop_register_timeout(1, 0, eapol_port_timers_tick, eloop_ctx, state);
 110 }
 111
 112
 113
 114 /* Authenticator PAE state machine */
 115
 116 SM_STATE(AUTH_PAE, INITIALIZE)
 117 {
 118         SM_ENTRY(AUTH_PAE, INITIALIZE, auth_pae);
 119         sm->auth_pae.portMode = Auto;
 120
 121         sm->currentId = 255;
 122 }
 123
 124
 125 SM_STATE(AUTH_PAE, DISCONNECTED)
 126 {
 127         int from_initialize = sm->auth_pae.state == AUTH_PAE_INITIALIZE;
 128
 129         if (sm->auth_pae.eapolLogoff) {
 130                 if (sm->auth_pae.state == AUTH_PAE_CONNECTING)
 131                         sm->auth_pae.authEapLogoffsWhileConnecting++;
 132                 else if (sm->auth_pae.state == AUTH_PAE_AUTHENTICATED)
 133                         sm->auth_pae.authAuthEapLogoffWhileAuthenticated++;
 134         }
 135
 136         SM_ENTRY(AUTH_PAE, DISCONNECTED, auth_pae);
 137
 138         sm->authPortStatus = Unauthorized;
 139         setPortUnauthorized();
 140         sm->auth_pae.reAuthCount = 0;
 141         sm->auth_pae.eapolLogoff = FALSE;
 142         if (!from_initialize) {
 143                 if (sm->flags & EAPOL_SM_PREAUTH)
 144                         rsn_preauth_finished(sm->hapd, sm->sta, 0);
 145                 else
 146                         ieee802_1x_finished(sm->hapd, sm->sta, 0);
 147         }
 148 }
 149
 150
 151 SM_STATE(AUTH_PAE, RESTART)
 152 {
 153         if (sm->auth_pae.state == AUTH_PAE_AUTHENTICATED) {
 154                 if (sm->reAuthenticate)
 155                         sm->auth_pae.authAuthReauthsWhileAuthenticated++;
 156                 if (sm->auth_pae.eapolStart)
 157                         sm->auth_pae.authAuthEapStartsWhileAuthenticated++;
 158                 if (sm->auth_pae.eapolLogoff)
 159                         sm->auth_pae.authAuthEapLogoffWhileAuthenticated++;
 160         }
 161
 162         SM_ENTRY(AUTH_PAE, RESTART, auth_pae);
 163
 164         sm->auth_pae.eapRestart = TRUE;
 165         ieee802_1x_request_identity(sm->hapd, sm->sta);
 166 }
 167
 168
 169 SM_STATE(AUTH_PAE, CONNECTING)
 170 {
 171         if (sm->auth_pae.state != AUTH_PAE_CONNECTING)
 172                 sm->auth_pae.authEntersConnecting++;
 173
 174         SM_ENTRY(AUTH_PAE, CONNECTING, auth_pae);
 175
 176         sm->reAuthenticate = FALSE;
 177         sm->auth_pae.reAuthCount++;
 178 }
 179
 180
 181 SM_STATE(AUTH_PAE, HELD)
 182 {
 183         if (sm->auth_pae.state == AUTH_PAE_AUTHENTICATING && sm->authFail)
 184                 sm->auth_pae.authAuthFailWhileAuthenticating++;
 185
 186         SM_ENTRY(AUTH_PAE, HELD, auth_pae);
 187
 188         sm->authPortStatus = Unauthorized;
 189         setPortUnauthorized();
 190         sm->quietWhile = sm->auth_pae.quietPeriod;
 191         sm->auth_pae.eapolLogoff = FALSE;
 192
 193         hostapd_logger(sm->hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
 194                        HOSTAPD_LEVEL_WARNING, "authentication failed");
 195         if (sm->flags & EAPOL_SM_PREAUTH)
 196                 rsn_preauth_finished(sm->hapd, sm->sta, 0);
 197         else
 198                 ieee802_1x_finished(sm->hapd, sm->sta, 0);
 199 }
 200
 201
 202 SM_STATE(AUTH_PAE, AUTHENTICATED)
 203 {
 204         if (sm->auth_pae.state == AUTH_PAE_AUTHENTICATING && sm->authSuccess)
 205                 sm->auth_pae.authAuthSuccessesWhileAuthenticating++;
 206
 207         SM_ENTRY(AUTH_PAE, AUTHENTICATED, auth_pae);
 208
 209         sm->authPortStatus = Authorized;
 210         setPortAuthorized();
 211         sm->auth_pae.reAuthCount = 0;
 212         hostapd_logger(sm->hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
 213                        HOSTAPD_LEVEL_INFO, "authenticated");
 214         if (sm->flags & EAPOL_SM_PREAUTH)
 215                 rsn_preauth_finished(sm->hapd, sm->sta, 1);
 216         else
 217                 ieee802_1x_finished(sm->hapd, sm->sta, 1);
 218 }
 219
 220
 221 SM_STATE(AUTH_PAE, AUTHENTICATING)
 222 {
 223         if (sm->auth_pae.state == AUTH_PAE_CONNECTING && sm->rx_identity) {
 224                 sm->auth_pae.authEntersAuthenticating++;
 225                 sm->rx_identity = FALSE;
 226         }
 227
 228         SM_ENTRY(AUTH_PAE, AUTHENTICATING, auth_pae);
 229
 230         sm->auth_pae.eapolStart = FALSE;
 231         sm->authSuccess = FALSE;
 232         sm->authFail = FALSE;
 233         sm->authTimeout = FALSE;
 234         sm->authStart = TRUE;
 235         sm->keyRun = FALSE;
 236         sm->keyDone = FALSE;
 237 }
 238
 239
 240 SM_STATE(AUTH_PAE, ABORTING)
 241 {
 242         if (sm->auth_pae.state == AUTH_PAE_AUTHENTICATING) {
 243                 if (sm->authTimeout)
 244                         sm->auth_pae.authAuthTimeoutsWhileAuthenticating++;
 245                 if (sm->auth_pae.eapolStart)
 246                         sm->auth_pae.authAuthEapStartsWhileAuthenticating++;
 247                 if (sm->auth_pae.eapolLogoff)
 248                         sm->auth_pae.authAuthEapLogoffWhileAuthenticating++;
 249         }
 250
 251         SM_ENTRY(AUTH_PAE, ABORTING, auth_pae);
 252
 253         sm->authAbort = TRUE;
 254         sm->keyRun = FALSE;
 255         sm->keyDone = FALSE;
 256 }
 257
 258
 259 SM_STATE(AUTH_PAE, FORCE_AUTH)
 260 {
 261         SM_ENTRY(AUTH_PAE, FORCE_AUTH, auth_pae);
 262
 263         sm->authPortStatus = Authorized;
 264         setPortAuthorized();
 265         sm->auth_pae.portMode = ForceAuthorized;
 266         sm->auth_pae.eapolStart = FALSE;
 267         txCannedSuccess();
 268 }
 269
 270
 271 SM_STATE(AUTH_PAE, FORCE_UNAUTH)
 272 {
 273         SM_ENTRY(AUTH_PAE, FORCE_UNAUTH, auth_pae);
 274
 275         sm->authPortStatus = Unauthorized;
 276         setPortUnauthorized();
 277         sm->auth_pae.portMode = ForceUnauthorized;
 278         sm->auth_pae.eapolStart = FALSE;
 279         txCannedFail();
 280 }
 281
 282
 283 SM_STEP(AUTH_PAE)
 284 {
 285         if ((sm->portControl == Auto &&
 286              sm->auth_pae.portMode != sm->portControl) ||
 287             sm->initialize || !sm->portEnabled)
 288                 SM_ENTER(AUTH_PAE, INITIALIZE);
 289         else if (sm->portControl == ForceAuthorized &&
 290                  sm->auth_pae.portMode != sm->portControl &&
 291                  !(sm->initialize || !sm->portEnabled))
 292                 SM_ENTER(AUTH_PAE, FORCE_AUTH);
 293         else if (sm->portControl == ForceUnauthorized &&
 294                  sm->auth_pae.portMode != sm->portControl &&
 295                  !(sm->initialize || !sm->portEnabled))
 296                 SM_ENTER(AUTH_PAE, FORCE_UNAUTH);
 297         else {
 298                 switch (sm->auth_pae.state) {
 299                 case AUTH_PAE_INITIALIZE:
 300                         SM_ENTER(AUTH_PAE, DISCONNECTED);
 301                         break;
 302                 case AUTH_PAE_DISCONNECTED:
 303                         SM_ENTER(AUTH_PAE, RESTART);
 304                         break;
 305                 case AUTH_PAE_RESTART:
 306                         if (!sm->auth_pae.eapRestart)
 307                                 SM_ENTER(AUTH_PAE, CONNECTING);
 308                         break;
 309                 case AUTH_PAE_HELD:
 310                         if (sm->quietWhile == 0)
 311                                 SM_ENTER(AUTH_PAE, RESTART);
 312                         break;
 313                 case AUTH_PAE_CONNECTING:
 314                         if (sm->auth_pae.eapolLogoff ||
 315                             sm->auth_pae.reAuthCount > sm->auth_pae.reAuthMax)
 316                                 SM_ENTER(AUTH_PAE, DISCONNECTED);
 317                         else if ((sm->be_auth.eapReq &&
 318                                   sm->auth_pae.reAuthCount <=
 319                                   sm->auth_pae.reAuthMax) ||
 320                                  sm->eapSuccess || sm->eapFail)
 321                                 SM_ENTER(AUTH_PAE, AUTHENTICATING);
 322                         break;
 323                 case AUTH_PAE_AUTHENTICATED:
 324                         if (sm->auth_pae.eapolStart || sm->reAuthenticate)
 325                                 SM_ENTER(AUTH_PAE, RESTART);
 326                         else if (sm->auth_pae.eapolLogoff || !sm->portValid)
 327                                 SM_ENTER(AUTH_PAE, DISCONNECTED);
 328                         break;
 329                 case AUTH_PAE_AUTHENTICATING:
 330                         if (sm->authSuccess && sm->portValid)
 331                                 SM_ENTER(AUTH_PAE, AUTHENTICATED);
 332                         else if (sm->authFail ||
 333                                  (sm->keyDone && !sm->portValid))
 334                                 SM_ENTER(AUTH_PAE, HELD);
 335                         else if (sm->auth_pae.eapolStart ||
 336                                  sm->auth_pae.eapolLogoff || sm->authTimeout)
 337                                 SM_ENTER(AUTH_PAE, ABORTING);
 338                         break;
 339                 case AUTH_PAE_ABORTING:
 340                         if (sm->auth_pae.eapolLogoff && !sm->authAbort)
 341                                 SM_ENTER(AUTH_PAE, DISCONNECTED);
 342                         else if (!sm->auth_pae.eapolLogoff && !sm->authAbort)
 343                                 SM_ENTER(AUTH_PAE, RESTART);
 344                         break;
 345                 case AUTH_PAE_FORCE_AUTH:
 346                         if (sm->auth_pae.eapolStart)
 347                                 SM_ENTER(AUTH_PAE, FORCE_AUTH);
 348                         break;
 349                 case AUTH_PAE_FORCE_UNAUTH:
 350                         if (sm->auth_pae.eapolStart)
 351                                 SM_ENTER(AUTH_PAE, FORCE_UNAUTH);
 352                         break;
 353                 }
 354         }
 355 }
 356
 357
 358
 359 /* Backend Authentication state machine */
 360
 361 SM_STATE(BE_AUTH, INITIALIZE)
 362 {
 363         SM_ENTRY(BE_AUTH, INITIALIZE, be_auth);
 364
 365         abortAuth();
 366         sm->be_auth.eapNoReq = FALSE;
 367         sm->authAbort = FALSE;
 368 }
 369
 370
 371 SM_STATE(BE_AUTH, REQUEST)
 372 {
 373         SM_ENTRY(BE_AUTH, REQUEST, be_auth);
 374
 375         txReq();
 376         sm->be_auth.eapReq = FALSE;
 377         sm->be_auth.backendOtherRequestsToSupplicant++;
 378
 379         /*
 380          * Clearing eapolEap here is not specified in IEEE Std 802.1X-2004, but
 381          * it looks like this would be logical thing to do there since the old
 382          * EAP response would not be valid anymore after the new EAP request
 383          * was sent out.
 384          *
 385          * A race condition has been reported, in which hostapd ended up
 386          * sending out EAP-Response/Identity as a response to the first
 387          * EAP-Request from the main EAP method. This can be avoided by
 388          * clearing eapolEap here.
 389          */
 390         sm->eapolEap = FALSE;
 391 }
 392
 393
 394 SM_STATE(BE_AUTH, RESPONSE)
 395 {
 396         SM_ENTRY(BE_AUTH, RESPONSE, be_auth);
 397
 398         sm->authTimeout = FALSE;
 399         sm->eapolEap = FALSE;
 400         sm->be_auth.eapNoReq = FALSE;
 401         sm->aWhile = sm->be_auth.serverTimeout;
 402         sm->be_auth.eapResp = TRUE;
 403         sendRespToServer();
 404         sm->be_auth.backendResponses++;
 405 }
 406
 407
 408 SM_STATE(BE_AUTH, SUCCESS)
 409 {
 410         SM_ENTRY(BE_AUTH, SUCCESS, be_auth);
 411
 412         txReq();
 413         sm->authSuccess = TRUE;
 414         sm->keyRun = TRUE;
 415 }
 416
 417
 418 SM_STATE(BE_AUTH, FAIL)
 419 {
 420         SM_ENTRY(BE_AUTH, FAIL, be_auth);
 421
 422         /* Note: IEEE 802.1X-REV-d11 has unconditional txReq() here.
 423          * txCannelFail() is used as a workaround for the case where
 424          * authentication server does not include EAP-Message with
 425          * Access-Reject. */
 426         if (sm->last_eap_radius == NULL)
 427                 txCannedFail();
 428         else
 429                 txReq();
 430         sm->authFail = TRUE;
 431 }
 432
 433
 434 SM_STATE(BE_AUTH, TIMEOUT)
 435 {
 436         SM_ENTRY(BE_AUTH, TIMEOUT, be_auth);
 437
 438         sm->authTimeout = TRUE;
 439 }
 440
 441
 442 SM_STATE(BE_AUTH, IDLE)
 443 {
 444         SM_ENTRY(BE_AUTH, IDLE, be_auth);
 445
 446         sm->authStart = FALSE;
 447 }
 448
 449
 450 SM_STATE(BE_AUTH, IGNORE)
 451 {
 452         SM_ENTRY(BE_AUTH, IGNORE, be_auth);
 453
 454         sm->be_auth.eapNoReq = FALSE;
 455 }
 456
 457
 458 SM_STEP(BE_AUTH)
 459 {
 460         if (sm->portControl != Auto || sm->initialize || sm->authAbort) {
 461                 SM_ENTER(BE_AUTH, INITIALIZE);
 462                 return;
 463         }
 464
 465         switch (sm->be_auth.state) {
 466         case BE_AUTH_INITIALIZE:
 467                 SM_ENTER(BE_AUTH, IDLE);
 468                 break;
 469         case BE_AUTH_REQUEST:
 470                 if (sm->eapolEap)
 471                         SM_ENTER(BE_AUTH, RESPONSE);
 472                 else if (sm->be_auth.eapReq)
 473                         SM_ENTER(BE_AUTH, REQUEST);
 474                 else if (sm->eapTimeout)
 475                         SM_ENTER(BE_AUTH, TIMEOUT);
 476                 break;
 477         case BE_AUTH_RESPONSE:
 478                 if (sm->be_auth.eapNoReq)
 479                         SM_ENTER(BE_AUTH, IGNORE);
 480                 if (sm->be_auth.eapReq) {
 481                         sm->be_auth.backendAccessChallenges++;
 482                         SM_ENTER(BE_AUTH, REQUEST);
 483                 } else if (sm->aWhile == 0)
 484                         SM_ENTER(BE_AUTH, TIMEOUT);
 485                 else if (sm->eapFail) {
 486                         sm->be_auth.backendAuthFails++;
 487                         SM_ENTER(BE_AUTH, FAIL);
 488                 } else if (sm->eapSuccess) {
 489                         sm->be_auth.backendAuthSuccesses++;
 490                         SM_ENTER(BE_AUTH, SUCCESS);
 491                 }
 492                 break;
 493         case BE_AUTH_SUCCESS:
 494                 SM_ENTER(BE_AUTH, IDLE);
 495                 break;
 496         case BE_AUTH_FAIL:
 497                 SM_ENTER(BE_AUTH, IDLE);
 498                 break;
 499         case BE_AUTH_TIMEOUT:
 500                 SM_ENTER(BE_AUTH, IDLE);
 501                 break;
 502         case BE_AUTH_IDLE:
 503                 if (sm->eapFail && sm->authStart)
 504                         SM_ENTER(BE_AUTH, FAIL);
 505                 else if (sm->be_auth.eapReq && sm->authStart)
 506                         SM_ENTER(BE_AUTH, REQUEST);
 507                 else if (sm->eapSuccess && sm->authStart)
 508                         SM_ENTER(BE_AUTH, SUCCESS);
 509                 break;
 510         case BE_AUTH_IGNORE:
 511                 if (sm->eapolEap)
 512                         SM_ENTER(BE_AUTH, RESPONSE);
 513                 else if (sm->be_auth.eapReq)
 514                         SM_ENTER(BE_AUTH, REQUEST);
 515                 else if (sm->eapTimeout)
 516                         SM_ENTER(BE_AUTH, TIMEOUT);
 517                 break;
 518         }
 519 }
 520
 521
 522
 523 /* Reauthentication Timer state machine */
 524
 525 SM_STATE(REAUTH_TIMER, INITIALIZE)
 526 {
 527         SM_ENTRY(REAUTH_TIMER, INITIALIZE, reauth_timer);
 528
 529         sm->reAuthWhen = sm->reauth_timer.reAuthPeriod;
 530 }
 531
 532
 533 SM_STATE(REAUTH_TIMER, REAUTHENTICATE)
 534 {
 535         SM_ENTRY(REAUTH_TIMER, REAUTHENTICATE, reauth_timer);
 536
 537         sm->reAuthenticate = TRUE;
 538         wpa_sm_event(sm->hapd, sm->sta, WPA_REAUTH_EAPOL);
 539 }
 540
 541
 542 SM_STEP(REAUTH_TIMER)
 543 {
 544         if (sm->portControl != Auto || sm->initialize ||
 545             sm->authPortStatus == Unauthorized ||
 546             !sm->reauth_timer.reAuthEnabled) {
 547                 SM_ENTER(REAUTH_TIMER, INITIALIZE);
 548                 return;
 549         }
 550
 551         switch (sm->reauth_timer.state) {
 552         case REAUTH_TIMER_INITIALIZE:
 553                 if (sm->reAuthWhen == 0)
 554                         SM_ENTER(REAUTH_TIMER, REAUTHENTICATE);
 555                 break;
 556         case REAUTH_TIMER_REAUTHENTICATE:
 557                 SM_ENTER(REAUTH_TIMER, INITIALIZE);
 558                 break;
 559         }
 560 }
 561
 562
 563
 564 /* Authenticator Key Transmit state machine */
 565
 566 SM_STATE(AUTH_KEY_TX, NO_KEY_TRANSMIT)
 567 {
 568         SM_ENTRY(AUTH_KEY_TX, NO_KEY_TRANSMIT, auth_key_tx);
 569 }
 570
 571
 572 SM_STATE(AUTH_KEY_TX, KEY_TRANSMIT)
 573 {
 574         SM_ENTRY(AUTH_KEY_TX, KEY_TRANSMIT, auth_key_tx);
 575
 576         txKey();
 577         sm->keyAvailable = FALSE;
 578         sm->keyDone = TRUE;
 579 }
 580
 581
 582 SM_STEP(AUTH_KEY_TX)
 583 {
 584         if (sm->initialize || sm->portControl != Auto) {
 585                 SM_ENTER(AUTH_KEY_TX, NO_KEY_TRANSMIT);
 586                 return;
 587         }
 588
 589         switch (sm->auth_key_tx.state) {
 590         case AUTH_KEY_TX_NO_KEY_TRANSMIT:
 591                 if (sm->keyTxEnabled && sm->keyAvailable && sm->keyRun &&
 592                     !sm->sta->wpa)
 593                         SM_ENTER(AUTH_KEY_TX, KEY_TRANSMIT);
 594                 break;
 595         case AUTH_KEY_TX_KEY_TRANSMIT:
 596                 if (!sm->keyTxEnabled || !sm->keyRun)
 597                         SM_ENTER(AUTH_KEY_TX, NO_KEY_TRANSMIT);
 598                 else if (sm->keyAvailable)
 599                         SM_ENTER(AUTH_KEY_TX, KEY_TRANSMIT);
 600                 break;
 601         }
 602 }
 603
 604
 605
 606 /* Key Receive state machine */
 607
 608 SM_STATE(KEY_RX, NO_KEY_RECEIVE)
 609 {
 610         SM_ENTRY(KEY_RX, NO_KEY_RECEIVE, key_rx);
 611 }
 612
 613
 614 SM_STATE(KEY_RX, KEY_RECEIVE)
 615 {
 616         SM_ENTRY(KEY_RX, KEY_RECEIVE, key_rx);
 617
 618         processKey();
 619         sm->key_rx.rxKey = FALSE;
 620 }
 621
 622
 623 SM_STEP(KEY_RX)
 624 {
 625         if (sm->initialize || !sm->portEnabled) {
 626                 SM_ENTER(KEY_RX, NO_KEY_RECEIVE);
 627                 return;
 628         }
 629
 630         switch (sm->key_rx.state) {
 631         case KEY_RX_NO_KEY_RECEIVE:
 632                 if (sm->key_rx.rxKey)
 633                         SM_ENTER(KEY_RX, KEY_RECEIVE);
 634                 break;
 635         case KEY_RX_KEY_RECEIVE:
 636                 if (sm->key_rx.rxKey)
 637                         SM_ENTER(KEY_RX, KEY_RECEIVE);
 638                 break;
 639         }
 640 }
 641
 642
 643
 644 /* Controlled Directions state machine */
 645
 646 SM_STATE(CTRL_DIR, FORCE_BOTH)
 647 {
 648         SM_ENTRY(CTRL_DIR, FORCE_BOTH, ctrl_dir);
 649         sm->ctrl_dir.operControlledDirections = Both;
 650 }
 651
 652
 653 SM_STATE(CTRL_DIR, IN_OR_BOTH)
 654 {
 655         SM_ENTRY(CTRL_DIR, IN_OR_BOTH, ctrl_dir);
 656         sm->ctrl_dir.operControlledDirections =
 657                 sm->ctrl_dir.adminControlledDirections;
 658 }
 659
 660
 661 SM_STEP(CTRL_DIR)
 662 {
 663         if (sm->initialize) {
 664                 SM_ENTER(CTRL_DIR, IN_OR_BOTH);
 665                 return;
 666         }
 667
 668         switch (sm->ctrl_dir.state) {
 669         case CTRL_DIR_FORCE_BOTH:
 670                 if (sm->portEnabled && sm->ctrl_dir.operEdge)
 671                         SM_ENTER(CTRL_DIR, IN_OR_BOTH);
 672                 break;
 673         case CTRL_DIR_IN_OR_BOTH:
 674                 if (sm->ctrl_dir.operControlledDirections !=
 675                     sm->ctrl_dir.adminControlledDirections)
 676                         SM_ENTER(CTRL_DIR, IN_OR_BOTH);
 677                 if (!sm->portEnabled || !sm->ctrl_dir.operEdge)
 678                         SM_ENTER(CTRL_DIR, FORCE_BOTH);
 679                 break;
 680         }
 681 }
 682
 683
 684
 685 struct eapol_state_machine *
 686 eapol_sm_alloc(hostapd *hapd, struct sta_info *sta)
 687 {
 688         struct eapol_state_machine *sm;
 689
 690         sm = (struct eapol_state_machine *) malloc(sizeof(*sm));
 691         if (sm == NULL) {
 692                 printf("IEEE 802.1X port state allocation failed\n");
 693                 return NULL;
 694         }
 695         memset(sm, 0, sizeof(*sm));
 696         sm->radius_identifier = -1;
 697         memcpy(sm->addr, sta->addr, ETH_ALEN);
 698         if (sta->flags & WLAN_STA_PREAUTH)
 699                 sm->flags |= EAPOL_SM_PREAUTH;
 700
 701         sm->hapd = hapd;
 702         sm->sta = sta;
 703
 704         /* Set default values for state machine constants */
 705         sm->auth_pae.state = AUTH_PAE_INITIALIZE;
 706         sm->auth_pae.quietPeriod = AUTH_PAE_DEFAULT_quietPeriod;
 707         sm->auth_pae.reAuthMax = AUTH_PAE_DEFAULT_reAuthMax;
 708
 709         sm->be_auth.state = BE_AUTH_INITIALIZE;
 710         sm->be_auth.serverTimeout = BE_AUTH_DEFAULT_serverTimeout;
 711
 712         sm->reauth_timer.state = REAUTH_TIMER_INITIALIZE;
 713         sm->reauth_timer.reAuthPeriod = hapd->conf->eap_reauth_period;
 714         sm->reauth_timer.reAuthEnabled = hapd->conf->eap_reauth_period > 0 ?
 715                 TRUE : FALSE;
 716
 717         sm->auth_key_tx.state = AUTH_KEY_TX_NO_KEY_TRANSMIT;
 718
 719         sm->key_rx.state = KEY_RX_NO_KEY_RECEIVE;
 720
 721         sm->ctrl_dir.state = CTRL_DIR_IN_OR_BOTH;
 722
 723         sm->portEnabled = FALSE;
 724         sm->portControl = Auto;
 725
 726         sm->keyAvailable = FALSE;
 727         if (!hapd->conf->wpa &&
 728             (hapd->default_wep_key || hapd->conf->individual_wep_key_len > 0))
 729                 sm->keyTxEnabled = TRUE;
 730         else
 731                 sm->keyTxEnabled = FALSE;
 732         if (hapd->conf->wpa)
 733                 sm->portValid = FALSE;
 734         else
 735                 sm->portValid = TRUE;
 736
 737         if (hapd->conf->eap_server) {
 738                 struct eap_config eap_conf;
 739                 memset(&eap_conf, 0, sizeof(eap_conf));
 740                 eap_conf.ssl_ctx = hapd->ssl_ctx;
 741                 eap_conf.eap_sim_db_priv = hapd->eap_sim_db_priv;
 742                 sm->eap = eap_sm_init(sm, &eapol_cb, &eap_conf);
 743                 if (sm->eap == NULL) {
 744                         eapol_sm_free(sm);
 745                         return NULL;
 746                 }
 747         }
 748
 749         eapol_sm_initialize(sm);
 750
 751         return sm;
 752 }
 753
 754
 755 void eapol_sm_free(struct eapol_state_machine *sm)
 756 {
 757         if (sm == NULL)
 758                 return;
 759
 760         eloop_cancel_timeout(eapol_port_timers_tick, sm->hapd, sm);
 761         eloop_cancel_timeout(eapol_sm_step_cb, sm, NULL);
 762         if (sm->eap)
 763                 eap_sm_deinit(sm->eap);
 764         free(sm);
 765 }
 766
 767
 768 static int eapol_sm_sta_entry_alive(struct hostapd_data *hapd, u8 *addr)
 769 {
 770         struct sta_info *sta;
 771         sta = ap_get_sta(hapd, addr);
 772         if (sta == NULL || sta->eapol_sm == NULL)
 773                 return 0;
 774         return 1;
 775 }
 776
 777
 778 static void eapol_sm_step_run(struct eapol_state_machine *sm)
 779 {
 780         struct hostapd_data *hapd = sm->hapd;
 781         u8 addr[ETH_ALEN];
 782         int prev_auth_pae, prev_be_auth, prev_reauth_timer, prev_auth_key_tx,
 783                 prev_key_rx, prev_ctrl_dir;
 784         int max_steps = 100;
 785
 786         memcpy(addr, sm->sta->addr, ETH_ALEN);
 787
 788         /*
 789          * Allow EAPOL state machines to run as long as there are state
 790          * changes, but exit and return here through event loop if more than
 791          * 100 steps is needed as a precaution against infinite loops inside
 792          * eloop callback.
 793          */
 794 restart:
 795         prev_auth_pae = sm->auth_pae.state;
 796         prev_be_auth = sm->be_auth.state;
 797         prev_reauth_timer = sm->reauth_timer.state;
 798         prev_auth_key_tx = sm->auth_key_tx.state;
 799         prev_key_rx = sm->key_rx.state;
 800         prev_ctrl_dir = sm->ctrl_dir.state;
 801
 802         SM_STEP_RUN(AUTH_PAE);
 803         if (sm->initializing || eapol_sm_sta_entry_alive(hapd, addr))
 804                 SM_STEP_RUN(BE_AUTH);
 805         if (sm->initializing || eapol_sm_sta_entry_alive(hapd, addr))
 806                 SM_STEP_RUN(REAUTH_TIMER);
 807         if (sm->initializing || eapol_sm_sta_entry_alive(hapd, addr))
 808                 SM_STEP_RUN(AUTH_KEY_TX);
 809         if (sm->initializing || eapol_sm_sta_entry_alive(hapd, addr))
 810                 SM_STEP_RUN(KEY_RX);
 811         if (sm->initializing || eapol_sm_sta_entry_alive(hapd, addr))
 812                 SM_STEP_RUN(CTRL_DIR);
 813
 814         if (prev_auth_pae != sm->auth_pae.state ||
 815             prev_be_auth != sm->be_auth.state ||
 816             prev_reauth_timer != sm->reauth_timer.state ||
 817             prev_auth_key_tx != sm->auth_key_tx.state ||
 818             prev_key_rx != sm->key_rx.state ||
 819             prev_ctrl_dir != sm->ctrl_dir.state) {
 820                 if (--max_steps > 0)
 821                         goto restart;
 822                 /* Re-run from eloop timeout */
 823                 eapol_sm_step(sm);
 824                 return;
 825         }
 826
 827         if (eapol_sm_sta_entry_alive(hapd, addr) && sm->eap) {
 828                 if (eap_sm_step(sm->eap)) {
 829                         if (--max_steps > 0)
 830                                 goto restart;
 831                         /* Re-run from eloop timeout */
 832                         eapol_sm_step(sm);
 833                         return;
 834                 }
 835         }
 836
 837         if (eapol_sm_sta_entry_alive(hapd, addr))
 838                 wpa_sm_notify(sm->hapd, sm->sta);
 839 }
 840
 841
 842 static void eapol_sm_step_cb(void *eloop_ctx, void *timeout_ctx)
 843 {
 844         struct eapol_state_machine *sm = eloop_ctx;
 845         eapol_sm_step_run(sm);
 846 }
 847
 848
 849 void eapol_sm_step(struct eapol_state_machine *sm)
 850 {
 851         /*
 852          * Run eapol_sm_step_run from a registered timeout to make sure that
 853          * other possible timeouts/events are processed and to avoid long
 854          * function call chains.
 855          */
 856
 857         eloop_register_timeout(0, 0, eapol_sm_step_cb, sm, NULL);
 858 }
 859
 860
 861 void eapol_sm_initialize(struct eapol_state_machine *sm)
 862 {
 863         sm->initializing = TRUE;
 864         /* Initialize the state machines by asserting initialize and then
 865          * deasserting it after one step */
 866         sm->initialize = TRUE;
 867         eapol_sm_step_run(sm);
 868         sm->initialize = FALSE;
 869         eapol_sm_step_run(sm);
 870         sm->initializing = FALSE;
 871
 872         /* Start one second tick for port timers state machine */
 873         eloop_cancel_timeout(eapol_port_timers_tick, sm->hapd, sm);
 874         eloop_register_timeout(1, 0, eapol_port_timers_tick, sm->hapd, sm);
 875 }
 876
 877
 878 #ifdef HOSTAPD_DUMP_STATE
 879 static inline const char * port_type_txt(PortTypes pt)
 880 {
 881         switch (pt) {
 882         case ForceUnauthorized: return "ForceUnauthorized";
 883         case ForceAuthorized: return "ForceAuthorized";
 884         case Auto: return "Auto";
 885         default: return "Unknown";
 886         }
 887 }
 888
 889
 890 static inline const char * port_state_txt(PortState ps)
 891 {
 892         switch (ps) {
 893         case Unauthorized: return "Unauthorized";
 894         case Authorized: return "Authorized";
 895         default: return "Unknown";
 896         }
 897 }
 898
 899
 900 static inline const char * ctrl_dir_txt(ControlledDirection dir)
 901 {
 902         switch (dir) {
 903         case Both: return "Both";
 904         case In: return "In";
 905         default: return "Unknown";
 906         }
 907 }
 908
 909
 910 static inline const char * auth_pae_state_txt(int s)
 911 {
 912         switch (s) {
 913         case AUTH_PAE_INITIALIZE: return "INITIALIZE";
 914         case AUTH_PAE_DISCONNECTED: return "DISCONNECTED";
 915         case AUTH_PAE_CONNECTING: return "CONNECTING";
 916         case AUTH_PAE_AUTHENTICATING: return "AUTHENTICATING";
 917         case AUTH_PAE_AUTHENTICATED: return "AUTHENTICATED";
 918         case AUTH_PAE_ABORTING: return "ABORTING";
 919         case AUTH_PAE_HELD: return "HELD";
 920         case AUTH_PAE_FORCE_AUTH: return "FORCE_AUTH";
 921         case AUTH_PAE_FORCE_UNAUTH: return "FORCE_UNAUTH";
 922         case AUTH_PAE_RESTART: return "RESTART";
 923         default: return "Unknown";
 924         }
 925 }
 926
 927
 928 static inline const char * be_auth_state_txt(int s)
 929 {
 930         switch (s) {
 931         case BE_AUTH_REQUEST: return "REQUEST";
 932         case BE_AUTH_RESPONSE: return "RESPONSE";
 933         case BE_AUTH_SUCCESS: return "SUCCESS";
 934         case BE_AUTH_FAIL: return "FAIL";
 935         case BE_AUTH_TIMEOUT: return "TIMEOUT";
 936         case BE_AUTH_IDLE: return "IDLE";
 937         case BE_AUTH_INITIALIZE: return "INITIALIZE";
 938         case BE_AUTH_IGNORE: return "IGNORE";
 939         default: return "Unknown";
 940         }
 941 }
 942
 943
 944 static inline const char * reauth_timer_state_txt(int s)
 945 {
 946         switch (s) {
 947         case REAUTH_TIMER_INITIALIZE: return "INITIALIZE";
 948         case REAUTH_TIMER_REAUTHENTICATE: return "REAUTHENTICATE";
 949         default: return "Unknown";
 950         }
 951 }
 952
 953
 954 static inline const char * auth_key_tx_state_txt(int s)
 955 {
 956         switch (s) {
 957         case AUTH_KEY_TX_NO_KEY_TRANSMIT: return "NO_KEY_TRANSMIT";
 958         case AUTH_KEY_TX_KEY_TRANSMIT: return "KEY_TRANSMIT";
 959         default: return "Unknown";
 960         }
 961 }
 962
 963
 964 static inline const char * key_rx_state_txt(int s)
 965 {
 966         switch (s) {
 967         case KEY_RX_NO_KEY_RECEIVE: return "NO_KEY_RECEIVE";
 968         case KEY_RX_KEY_RECEIVE: return "KEY_RECEIVE";
 969         default: return "Unknown";
 970         }
 971 }
 972
 973
 974 static inline const char * ctrl_dir_state_txt(int s)
 975 {
 976         switch (s) {
 977         case CTRL_DIR_FORCE_BOTH: return "FORCE_BOTH";
 978         case CTRL_DIR_IN_OR_BOTH: return "IN_OR_BOTH";
 979         default: return "Unknown";
 980         }
 981 }
 982
 983
 984 void eapol_sm_dump_state(FILE *f, const char *prefix,
 985                          struct eapol_state_machine *sm)
 986 {
 987         fprintf(f, "%sEAPOL state machine:\n", prefix);
 988         fprintf(f, "%s  aWhile=%d quietWhile=%d reAuthWhen=%d\n", prefix,
 989                 sm->aWhile, sm->quietWhile, sm->reAuthWhen);
 990 #define _SB(b) ((b) ? "TRUE" : "FALSE")
 991         fprintf(f,
 992                 "%s  authAbort=%s authFail=%s authPortStatus=%s authStart=%s\n"
 993                 "%s  authTimeout=%s authSuccess=%s eapFail=%s eapolEap=%s\n"
 994                 "%s  eapSuccess=%s eapTimeout=%s initialize=%s "
 995                 "keyAvailable=%s\n"
 996                 "%s  keyDone=%s keyRun=%s keyTxEnabled=%s portControl=%s\n"
 997                 "%s  portEnabled=%s portValid=%s reAuthenticate=%s\n",
 998                 prefix, _SB(sm->authAbort), _SB(sm->authFail),
 999                 port_state_txt(sm->authPortStatus), _SB(sm->authStart),
1000                 prefix, _SB(sm->authTimeout), _SB(sm->authSuccess),
1001                 _SB(sm->eapFail), _SB(sm->eapolEap),
1002                 prefix, _SB(sm->eapSuccess), _SB(sm->eapTimeout),
1003                 _SB(sm->initialize), _SB(sm->keyAvailable),
1004                 prefix, _SB(sm->keyDone), _SB(sm->keyRun),
1005                 _SB(sm->keyTxEnabled), port_type_txt(sm->portControl),
1006                 prefix, _SB(sm->portEnabled), _SB(sm->portValid),
1007                 _SB(sm->reAuthenticate));
1008
1009         fprintf(f, "%s  Authenticator PAE:\n"
1010                 "%s    state=%s\n"
1011                 "%s    eapolLogoff=%s eapolStart=%s eapRestart=%s\n"
1012                 "%s    portMode=%s reAuthCount=%d\n"
1013                 "%s    quietPeriod=%d reAuthMax=%d\n"
1014                 "%s    authEntersConnecting=%d\n"
1015                 "%s    authEapLogoffsWhileConnecting=%d\n"
1016                 "%s    authEntersAuthenticating=%d\n"
1017                 "%s    authAuthSuccessesWhileAuthenticating=%d\n"
1018                 "%s    authAuthTimeoutsWhileAuthenticating=%d\n"
1019                 "%s    authAuthFailWhileAuthenticating=%d\n"
1020                 "%s    authAuthEapStartsWhileAuthenticating=%d\n"
1021                 "%s    authAuthEapLogoffWhileAuthenticating=%d\n"
1022                 "%s    authAuthReauthsWhileAuthenticated=%d\n"
1023                 "%s    authAuthEapStartsWhileAuthenticated=%d\n"
1024                 "%s    authAuthEapLogoffWhileAuthenticated=%d\n",
1025                 prefix, prefix, auth_pae_state_txt(sm->auth_pae.state), prefix,
1026                 _SB(sm->auth_pae.eapolLogoff), _SB(sm->auth_pae.eapolStart),
1027                 _SB(sm->auth_pae.eapRestart), prefix,
1028                 port_type_txt(sm->auth_pae.portMode), sm->auth_pae.reAuthCount,
1029                 prefix, sm->auth_pae.quietPeriod, sm->auth_pae.reAuthMax,
1030                 prefix, sm->auth_pae.authEntersConnecting,
1031                 prefix, sm->auth_pae.authEapLogoffsWhileConnecting,
1032                 prefix, sm->auth_pae.authEntersAuthenticating,
1033                 prefix, sm->auth_pae.authAuthSuccessesWhileAuthenticating,
1034                 prefix, sm->auth_pae.authAuthTimeoutsWhileAuthenticating,
1035                 prefix, sm->auth_pae.authAuthFailWhileAuthenticating,
1036                 prefix, sm->auth_pae.authAuthEapStartsWhileAuthenticating,
1037                 prefix, sm->auth_pae.authAuthEapLogoffWhileAuthenticating,
1038                 prefix, sm->auth_pae.authAuthReauthsWhileAuthenticated,
1039                 prefix, sm->auth_pae.authAuthEapStartsWhileAuthenticated,
1040                 prefix, sm->auth_pae.authAuthEapLogoffWhileAuthenticated);
1041
1042         fprintf(f, "%s  Backend Authentication:\n"
1043                 "%s    state=%s\n"
1044                 "%s    eapNoReq=%s eapReq=%s eapResp=%s\n"
1045                 "%s    serverTimeout=%d\n"
1046                 "%s    backendResponses=%d\n"
1047                 "%s    backendAccessChallenges=%d\n"
1048                 "%s    backendOtherRequestsToSupplicant=%d\n"
1049                 "%s    backendAuthSuccesses=%d\n"
1050                 "%s    backendAuthFails=%d\n",
1051                 prefix, prefix,
1052                 be_auth_state_txt(sm->be_auth.state),
1053                 prefix, _SB(sm->be_auth.eapNoReq), _SB(sm->be_auth.eapReq),
1054                 _SB(sm->be_auth.eapResp),
1055                 prefix, sm->be_auth.serverTimeout,
1056                 prefix, sm->be_auth.backendResponses,
1057                 prefix, sm->be_auth.backendAccessChallenges,
1058                 prefix, sm->be_auth.backendOtherRequestsToSupplicant,
1059                 prefix, sm->be_auth.backendAuthSuccesses,
1060                 prefix, sm->be_auth.backendAuthFails);
1061
1062         fprintf(f, "%s  Reauthentication Timer:\n"
1063                 "%s    state=%s\n"
1064                 "%s    reAuthPeriod=%d reAuthEnabled=%s\n", prefix, prefix,
1065                 reauth_timer_state_txt(sm->reauth_timer.state), prefix,
1066                 sm->reauth_timer.reAuthPeriod,
1067                 _SB(sm->reauth_timer.reAuthEnabled));
1068
1069         fprintf(f, "%s  Authenticator Key Transmit:\n"
1070                 "%s    state=%s\n", prefix, prefix,
1071                 auth_key_tx_state_txt(sm->auth_key_tx.state));
1072
1073         fprintf(f, "%s  Key Receive:\n"
1074                 "%s    state=%s\n"
1075                 "%s    rxKey=%s\n", prefix, prefix,
1076                 key_rx_state_txt(sm->key_rx.state),
1077                 prefix, _SB(sm->key_rx.rxKey));
1078
1079         fprintf(f, "%s  Controlled Directions:\n"
1080                 "%s    state=%s\n"
1081                 "%s    adminControlledDirections=%s "
1082                 "operControlledDirections=%s\n"
1083                 "%s    operEdge=%s\n", prefix, prefix,
1084                 ctrl_dir_state_txt(sm->ctrl_dir.state),
1085                 prefix, ctrl_dir_txt(sm->ctrl_dir.adminControlledDirections),
1086                 ctrl_dir_txt(sm->ctrl_dir.operControlledDirections),
1087                 prefix, _SB(sm->ctrl_dir.operEdge));
1088 #undef _SB
1089 }
1090 #endif /* HOSTAPD_DUMP_STATE */
1091
1092
1093 static Boolean eapol_sm_get_bool(void *ctx, enum eapol_bool_var variable)
1094 {
1095         struct eapol_state_machine *sm = ctx;
1096         if (sm == NULL)
1097                 return FALSE;
1098         switch (variable) {
1099         case EAPOL_eapSuccess:
1100                 return sm->eapSuccess;
1101         case EAPOL_eapRestart:
1102                 return sm->auth_pae.eapRestart;
1103         case EAPOL_eapFail:
1104                 return sm->eapFail;
1105         case EAPOL_eapResp:
1106                 return sm->be_auth.eapResp;
1107         case EAPOL_eapReq:
1108                 return sm->be_auth.eapReq;
1109         case EAPOL_eapNoReq:
1110                 return sm->be_auth.eapNoReq;
1111         case EAPOL_portEnabled:
1112                 return sm->portEnabled;
1113         case EAPOL_eapTimeout:
1114                 return sm->eapTimeout;
1115         }
1116         return FALSE;
1117 }
1118
1119
1120 static void eapol_sm_set_bool(void *ctx, enum eapol_bool_var variable,
1121                               Boolean value)
1122 {
1123         struct eapol_state_machine *sm = ctx;
1124         if (sm == NULL)
1125                 return;
1126         switch (variable) {
1127         case EAPOL_eapSuccess:
1128                 sm->eapSuccess = value;
1129                 break;
1130         case EAPOL_eapRestart:
1131                 sm->auth_pae.eapRestart = value;
1132                 break;
1133         case EAPOL_eapFail:
1134                 sm->eapFail = value;
1135                 break;
1136         case EAPOL_eapResp:
1137                 sm->be_auth.eapResp = value;
1138                 break;
1139         case EAPOL_eapReq:
1140                 sm->be_auth.eapReq = value;
1141                 break;
1142         case EAPOL_eapNoReq:
1143                 sm->be_auth.eapNoReq = value;
1144                 break;
1145         case EAPOL_portEnabled:
1146                 sm->portEnabled = value;
1147                 break;
1148         case EAPOL_eapTimeout:
1149                 sm->eapTimeout = value;
1150                 break;
1151         }
1152 }
1153
1154
1155 static void eapol_sm_set_eapReqData(void *ctx, const u8 *eapReqData,
1156                                     size_t eapReqDataLen)
1157 {
1158         struct eapol_state_machine *sm = ctx;
1159         if (sm == NULL)
1160                 return;
1161
1162         free(sm->last_eap_radius);
1163         sm->last_eap_radius = malloc(eapReqDataLen);
1164         if (sm->last_eap_radius == NULL)
1165                 return;
1166         memcpy(sm->last_eap_radius, eapReqData, eapReqDataLen);
1167         sm->last_eap_radius_len = eapReqDataLen;
1168 }
1169
1170
1171 static void eapol_sm_set_eapKeyData(void *ctx, const u8 *eapKeyData,
1172                                     size_t eapKeyDataLen)
1173 {
1174         struct eapol_state_machine *sm = ctx;
1175         struct hostapd_data *hapd;
1176
1177         if (sm == NULL)
1178                 return;
1179
1180         hapd = sm->hapd;
1181
1182         if (eapKeyData && eapKeyDataLen >= 64) {
1183                 free(sm->eapol_key_sign);
1184                 free(sm->eapol_key_crypt);
1185                 sm->eapol_key_crypt = malloc(32);
1186                 if (sm->eapol_key_crypt) {
1187                         memcpy(sm->eapol_key_crypt, eapKeyData, 32);
1188                         sm->eapol_key_crypt_len = 32;
1189                 }
1190                 sm->eapol_key_sign = malloc(32);
1191                 if (sm->eapol_key_sign) {
1192                         memcpy(sm->eapol_key_sign, eapKeyData + 32, 32);
1193                         sm->eapol_key_sign_len = 32;
1194                 }
1195                 if (hapd->default_wep_key ||
1196                     hapd->conf->individual_wep_key_len > 0 ||
1197                     hapd->conf->wpa)
1198                         sm->keyAvailable = TRUE;
1199         } else {
1200                 free(sm->eapol_key_sign);
1201                 free(sm->eapol_key_crypt);
1202                 sm->eapol_key_sign = NULL;
1203                 sm->eapol_key_crypt = NULL;
1204                 sm->eapol_key_sign_len = 0;
1205                 sm->eapol_key_crypt_len = 0;
1206                 sm->keyAvailable = FALSE;
1207         }
1208 }
1209
1210
1211 static int eapol_sm_get_eap_user(void *ctx, const u8 *identity,
1212                                  size_t identity_len, int phase2,
1213                                  struct eap_user *user)
1214 {
1215         struct eapol_state_machine *sm = ctx;
1216         const struct hostapd_eap_user *eap_user;
1217
1218         eap_user = hostapd_get_eap_user(sm->hapd->conf, identity,
1219                                         identity_len, phase2);
1220         if (eap_user == NULL)
1221                 return -1;
1222
1223         memset(user, 0, sizeof(*user));
1224         user->phase2 = phase2;
1225         memcpy(user->methods, eap_user->methods,
1226                EAP_USER_MAX_METHODS > EAP_MAX_METHODS ?
1227                EAP_USER_MAX_METHODS : EAP_MAX_METHODS);
1228
1229         if (eap_user->password) {
1230                 user->password = malloc(eap_user->password_len);
1231                 if (user->password == NULL)
1232                         return -1;
1233                 memcpy(user->password, eap_user->password,
1234                        eap_user->password_len);
1235                 user->password_len = eap_user->password_len;
1236         }
1237         user->force_version = eap_user->force_version;
1238
1239         return 0;
1240 }
1241
1242
1243 static const char * eapol_sm_get_eap_req_id_text(void *ctx, size_t *len)
1244 {
1245         struct eapol_state_machine *sm = ctx;
1246         *len = sm->hapd->conf->eap_req_id_text_len;
1247         return sm->hapd->conf->eap_req_id_text;
1248 }
1249
1250
1251 static struct eapol_callbacks eapol_cb =
1252 {
1253         .get_bool = eapol_sm_get_bool,
1254         .set_bool = eapol_sm_set_bool,
1255         .set_eapReqData = eapol_sm_set_eapReqData,
1256         .set_eapKeyData = eapol_sm_set_eapKeyData,
1257         .get_eap_user = eapol_sm_get_eap_user,
1258         .get_eap_req_id_text = eapol_sm_get_eap_req_id_text,
1259 };