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 static void eapol_auth_logger(struct eapol_authenticator *eapol, 50 const u8 *addr, eapol_logger_level level, 51 const char *txt) 52 { 53 if (eapol->cb.logger == NULL) 54 return; 55 eapol->cb.logger(eapol->conf.ctx, addr, level, txt); 56 } 57 58 59 static void eapol_auth_vlogger(struct eapol_authenticator *eapol, 60 const u8 *addr, eapol_logger_level level, 61 const char *fmt, ...) 62 { 63 char *format; 64 int maxlen; 65 va_list ap; 66 67 if (eapol->cb.logger == NULL) 68 return; 69 70 maxlen = os_strlen(fmt) + 100; 71 format = os_malloc(maxlen); 72 if (!format) 73 return; 74 75 va_start(ap, fmt); 76 vsnprintf(format, maxlen, fmt, ap); 77 va_end(ap); 78 79 eapol_auth_logger(eapol, addr, level, format); 80 81 os_free(format); 82 } 83 84 85 static void eapol_auth_tx_canned_eap(struct eapol_state_machine *sm, 86 int success) 87 { 88 struct eap_hdr eap; 89 90 os_memset(&eap, 0, sizeof(eap)); 91 92 eap.code = success ? EAP_CODE_SUCCESS : EAP_CODE_FAILURE; 93 eap.identifier = ++sm->last_eap_id; 94 eap.length = host_to_be16(sizeof(eap)); 95 96 eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_DEBUG, 97 "Sending canned EAP packet %s (identifier %d)", 98 success ? "SUCCESS" : "FAILURE", eap.identifier); 99 sm->eapol->cb.eapol_send(sm->eapol->conf.ctx, sm->sta, 100 IEEE802_1X_TYPE_EAP_PACKET, 101 (u8 *) &eap, sizeof(eap)); 102 sm->dot1xAuthEapolFramesTx++; 103 } 104 105 106 static void eapol_auth_tx_req(struct eapol_state_machine *sm) 107 { 108 if (sm->eap_if->eapReqData == NULL || 109 wpabuf_len(sm->eap_if->eapReqData) < sizeof(struct eap_hdr)) { 110 eapol_auth_logger(sm->eapol, sm->addr, 111 EAPOL_LOGGER_DEBUG, 112 "TxReq called, but there is no EAP request " 113 "from authentication server"); 114 return; 115 } 116 117 if (sm->flags & EAPOL_SM_WAIT_START) { 118 wpa_printf(MSG_DEBUG, "EAPOL: Drop EAPOL TX to " MACSTR 119 " while waiting for EAPOL-Start", 120 MAC2STR(sm->addr)); 121 return; 122 } 123 124 sm->last_eap_id = eap_get_id(sm->eap_if->eapReqData); 125 eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_DEBUG, 126 "Sending EAP Packet (identifier %d)", 127 sm->last_eap_id); 128 sm->eapol->cb.eapol_send(sm->eapol->conf.ctx, sm->sta, 129 IEEE802_1X_TYPE_EAP_PACKET, 130 wpabuf_head(sm->eap_if->eapReqData), 131 wpabuf_len(sm->eap_if->eapReqData)); 132 sm->dot1xAuthEapolFramesTx++; 133 if (eap_get_type(sm->eap_if->eapReqData) == EAP_TYPE_IDENTITY) 134 sm->dot1xAuthEapolReqIdFramesTx++; 135 else 136 sm->dot1xAuthEapolReqFramesTx++; 137 } 138 139 140 /** 141 * eapol_port_timers_tick - Port Timers state machine 142 * @eloop_ctx: struct eapol_state_machine * 143 * @timeout_ctx: Not used 144 * 145 * This statemachine is implemented as a function that will be called 146 * once a second as a registered event loop timeout. 147 */ 148 static void eapol_port_timers_tick(void *eloop_ctx, void *timeout_ctx) 149 { 150 struct eapol_state_machine *state = timeout_ctx; 151 152 if (state->aWhile > 0) { 153 state->aWhile--; 154 if (state->aWhile == 0) { 155 wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR 156 " - aWhile --> 0", 157 MAC2STR(state->addr)); 158 } 159 } 160 161 if (state->quietWhile > 0) { 162 state->quietWhile--; 163 if (state->quietWhile == 0) { 164 wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR 165 " - quietWhile --> 0", 166 MAC2STR(state->addr)); 167 } 168 } 169 170 if (state->reAuthWhen > 0) { 171 state->reAuthWhen--; 172 if (state->reAuthWhen == 0) { 173 wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR 174 " - reAuthWhen --> 0", 175 MAC2STR(state->addr)); 176 } 177 } 178 179 if (state->eap_if->retransWhile > 0) { 180 state->eap_if->retransWhile--; 181 if (state->eap_if->retransWhile == 0) { 182 wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR 183 " - (EAP) retransWhile --> 0", 184 MAC2STR(state->addr)); 185 } 186 } 187 188 eapol_sm_step_run(state); 189 190 eloop_register_timeout(1, 0, eapol_port_timers_tick, eloop_ctx, state); 191 } 192 193 194 195 /* Authenticator PAE state machine */ 196 197 SM_STATE(AUTH_PAE, INITIALIZE) 198 { 199 SM_ENTRY_MA(AUTH_PAE, INITIALIZE, auth_pae); 200 sm->portMode = Auto; 201 202 /* 203 * Clearing keyRun here is not specified in IEEE Std 802.1X-2004, but 204 * it looks like this would be logical thing to do here since the 205 * EAPOL-Key exchange is not possible in this state. It is possible to 206 * get here on disconnection event without advancing to the 207 * AUTHENTICATING state to clear keyRun before the IEEE 802.11 RSN 208 * authenticator state machine runs and that may advance from 209 * AUTHENTICATION2 to INITPMK if keyRun = TRUE has been left from the 210 * last association. This can be avoided by clearing keyRun here. 211 */ 212 sm->keyRun = FALSE; 213 } 214 215 216 SM_STATE(AUTH_PAE, DISCONNECTED) 217 { 218 int from_initialize = sm->auth_pae_state == AUTH_PAE_INITIALIZE; 219 220 if (sm->eapolLogoff) { 221 if (sm->auth_pae_state == AUTH_PAE_CONNECTING) 222 sm->authEapLogoffsWhileConnecting++; 223 else if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATED) 224 sm->authAuthEapLogoffWhileAuthenticated++; 225 } 226 227 SM_ENTRY_MA(AUTH_PAE, DISCONNECTED, auth_pae); 228 229 sm->authPortStatus = Unauthorized; 230 setPortUnauthorized(); 231 sm->reAuthCount = 0; 232 sm->eapolLogoff = FALSE; 233 if (!from_initialize) { 234 sm->eapol->cb.finished(sm->eapol->conf.ctx, sm->sta, 0, 235 sm->flags & EAPOL_SM_PREAUTH, 236 sm->remediation); 237 } 238 } 239 240 241 SM_STATE(AUTH_PAE, RESTART) 242 { 243 if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATED) { 244 if (sm->reAuthenticate) 245 sm->authAuthReauthsWhileAuthenticated++; 246 if (sm->eapolStart) 247 sm->authAuthEapStartsWhileAuthenticated++; 248 if (sm->eapolLogoff) 249 sm->authAuthEapLogoffWhileAuthenticated++; 250 } 251 252 SM_ENTRY_MA(AUTH_PAE, RESTART, auth_pae); 253 254 sm->eap_if->eapRestart = TRUE; 255 } 256 257 258 SM_STATE(AUTH_PAE, CONNECTING) 259 { 260 if (sm->auth_pae_state != AUTH_PAE_CONNECTING) 261 sm->authEntersConnecting++; 262 263 SM_ENTRY_MA(AUTH_PAE, CONNECTING, auth_pae); 264 265 sm->reAuthenticate = FALSE; 266 sm->reAuthCount++; 267 } 268 269 270 SM_STATE(AUTH_PAE, HELD) 271 { 272 if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATING && sm->authFail) 273 sm->authAuthFailWhileAuthenticating++; 274 275 SM_ENTRY_MA(AUTH_PAE, HELD, auth_pae); 276 277 sm->authPortStatus = Unauthorized; 278 setPortUnauthorized(); 279 sm->quietWhile = sm->quietPeriod; 280 sm->eapolLogoff = FALSE; 281 282 eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_WARNING, 283 "authentication failed - EAP type: %d (%s)", 284 sm->eap_type_authsrv, 285 eap_server_get_name(0, sm->eap_type_authsrv)); 286 if (sm->eap_type_authsrv != sm->eap_type_supp) { 287 eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_INFO, 288 "Supplicant used different EAP type: " 289 "%d (%s)", sm->eap_type_supp, 290 eap_server_get_name(0, sm->eap_type_supp)); 291 } 292 sm->eapol->cb.finished(sm->eapol->conf.ctx, sm->sta, 0, 293 sm->flags & EAPOL_SM_PREAUTH, sm->remediation); 294 } 295 296 297 SM_STATE(AUTH_PAE, AUTHENTICATED) 298 { 299 char *extra = ""; 300 301 if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATING && sm->authSuccess) 302 sm->authAuthSuccessesWhileAuthenticating++; 303 304 SM_ENTRY_MA(AUTH_PAE, AUTHENTICATED, auth_pae); 305 306 sm->authPortStatus = Authorized; 307 setPortAuthorized(); 308 sm->reAuthCount = 0; 309 if (sm->flags & EAPOL_SM_PREAUTH) 310 extra = " (pre-authentication)"; 311 else if (sm->flags & EAPOL_SM_FROM_PMKSA_CACHE) 312 extra = " (PMKSA cache)"; 313 eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_INFO, 314 "authenticated - EAP type: %d (%s)%s", 315 sm->eap_type_authsrv, 316 eap_server_get_name(0, sm->eap_type_authsrv), 317 extra); 318 sm->eapol->cb.finished(sm->eapol->conf.ctx, sm->sta, 1, 319 sm->flags & EAPOL_SM_PREAUTH, sm->remediation); 320 } 321 322 323 SM_STATE(AUTH_PAE, AUTHENTICATING) 324 { 325 SM_ENTRY_MA(AUTH_PAE, AUTHENTICATING, auth_pae); 326 327 sm->eapolStart = FALSE; 328 sm->authSuccess = FALSE; 329 sm->authFail = FALSE; 330 sm->authTimeout = FALSE; 331 sm->authStart = TRUE; 332 sm->keyRun = FALSE; 333 sm->keyDone = FALSE; 334 } 335 336 337 SM_STATE(AUTH_PAE, ABORTING) 338 { 339 if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATING) { 340 if (sm->authTimeout) 341 sm->authAuthTimeoutsWhileAuthenticating++; 342 if (sm->eapolStart) 343 sm->authAuthEapStartsWhileAuthenticating++; 344 if (sm->eapolLogoff) 345 sm->authAuthEapLogoffWhileAuthenticating++; 346 } 347 348 SM_ENTRY_MA(AUTH_PAE, ABORTING, auth_pae); 349 350 sm->authAbort = TRUE; 351 sm->keyRun = FALSE; 352 sm->keyDone = FALSE; 353 } 354 355 356 SM_STATE(AUTH_PAE, FORCE_AUTH) 357 { 358 SM_ENTRY_MA(AUTH_PAE, FORCE_AUTH, auth_pae); 359 360 sm->authPortStatus = Authorized; 361 setPortAuthorized(); 362 sm->portMode = ForceAuthorized; 363 sm->eapolStart = FALSE; 364 txCannedSuccess(); 365 } 366 367 368 SM_STATE(AUTH_PAE, FORCE_UNAUTH) 369 { 370 SM_ENTRY_MA(AUTH_PAE, FORCE_UNAUTH, auth_pae); 371 372 sm->authPortStatus = Unauthorized; 373 setPortUnauthorized(); 374 sm->portMode = ForceUnauthorized; 375 sm->eapolStart = FALSE; 376 txCannedFail(); 377 } 378 379 380 SM_STEP(AUTH_PAE) 381 { 382 if ((sm->portControl == Auto && sm->portMode != sm->portControl) || 383 sm->initialize || !sm->eap_if->portEnabled) 384 SM_ENTER_GLOBAL(AUTH_PAE, INITIALIZE); 385 else if (sm->portControl == ForceAuthorized && 386 sm->portMode != sm->portControl && 387 !(sm->initialize || !sm->eap_if->portEnabled)) 388 SM_ENTER_GLOBAL(AUTH_PAE, FORCE_AUTH); 389 else if (sm->portControl == ForceUnauthorized && 390 sm->portMode != sm->portControl && 391 !(sm->initialize || !sm->eap_if->portEnabled)) 392 SM_ENTER_GLOBAL(AUTH_PAE, FORCE_UNAUTH); 393 else { 394 switch (sm->auth_pae_state) { 395 case AUTH_PAE_INITIALIZE: 396 SM_ENTER(AUTH_PAE, DISCONNECTED); 397 break; 398 case AUTH_PAE_DISCONNECTED: 399 SM_ENTER(AUTH_PAE, RESTART); 400 break; 401 case AUTH_PAE_RESTART: 402 if (!sm->eap_if->eapRestart) 403 SM_ENTER(AUTH_PAE, CONNECTING); 404 break; 405 case AUTH_PAE_HELD: 406 if (sm->quietWhile == 0) 407 SM_ENTER(AUTH_PAE, RESTART); 408 break; 409 case AUTH_PAE_CONNECTING: 410 if (sm->eapolLogoff || sm->reAuthCount > sm->reAuthMax) 411 SM_ENTER(AUTH_PAE, DISCONNECTED); 412 else if ((sm->eap_if->eapReq && 413 sm->reAuthCount <= sm->reAuthMax) || 414 sm->eap_if->eapSuccess || sm->eap_if->eapFail) 415 SM_ENTER(AUTH_PAE, AUTHENTICATING); 416 break; 417 case AUTH_PAE_AUTHENTICATED: 418 if (sm->eapolStart || sm->reAuthenticate) 419 SM_ENTER(AUTH_PAE, RESTART); 420 else if (sm->eapolLogoff || !sm->portValid) 421 SM_ENTER(AUTH_PAE, DISCONNECTED); 422 break; 423 case AUTH_PAE_AUTHENTICATING: 424 if (sm->authSuccess && sm->portValid) 425 SM_ENTER(AUTH_PAE, AUTHENTICATED); 426 else if (sm->authFail || 427 (sm->keyDone && !sm->portValid)) 428 SM_ENTER(AUTH_PAE, HELD); 429 else if (sm->eapolStart || sm->eapolLogoff || 430 sm->authTimeout) 431 SM_ENTER(AUTH_PAE, ABORTING); 432 break; 433 case AUTH_PAE_ABORTING: 434 if (sm->eapolLogoff && !sm->authAbort) 435 SM_ENTER(AUTH_PAE, DISCONNECTED); 436 else if (!sm->eapolLogoff && !sm->authAbort) 437 SM_ENTER(AUTH_PAE, RESTART); 438 break; 439 case AUTH_PAE_FORCE_AUTH: 440 if (sm->eapolStart) 441 SM_ENTER(AUTH_PAE, FORCE_AUTH); 442 break; 443 case AUTH_PAE_FORCE_UNAUTH: 444 if (sm->eapolStart) 445 SM_ENTER(AUTH_PAE, FORCE_UNAUTH); 446 break; 447 } 448 } 449 } 450 451 452 453 /* Backend Authentication state machine */ 454 455 SM_STATE(BE_AUTH, INITIALIZE) 456 { 457 SM_ENTRY_MA(BE_AUTH, INITIALIZE, be_auth); 458 459 abortAuth(); 460 sm->eap_if->eapNoReq = FALSE; 461 sm->authAbort = FALSE; 462 } 463 464 465 SM_STATE(BE_AUTH, REQUEST) 466 { 467 SM_ENTRY_MA(BE_AUTH, REQUEST, be_auth); 468 469 txReq(); 470 sm->eap_if->eapReq = FALSE; 471 sm->backendOtherRequestsToSupplicant++; 472 473 /* 474 * Clearing eapolEap here is not specified in IEEE Std 802.1X-2004, but 475 * it looks like this would be logical thing to do there since the old 476 * EAP response would not be valid anymore after the new EAP request 477 * was sent out. 478 * 479 * A race condition has been reported, in which hostapd ended up 480 * sending out EAP-Response/Identity as a response to the first 481 * EAP-Request from the main EAP method. This can be avoided by 482 * clearing eapolEap here. 483 */ 484 sm->eapolEap = FALSE; 485 } 486 487 488 SM_STATE(BE_AUTH, RESPONSE) 489 { 490 SM_ENTRY_MA(BE_AUTH, RESPONSE, be_auth); 491 492 sm->authTimeout = FALSE; 493 sm->eapolEap = FALSE; 494 sm->eap_if->eapNoReq = FALSE; 495 sm->aWhile = sm->serverTimeout; 496 sm->eap_if->eapResp = TRUE; 497 /* sendRespToServer(); */ 498 sm->backendResponses++; 499 } 500 501 502 SM_STATE(BE_AUTH, SUCCESS) 503 { 504 SM_ENTRY_MA(BE_AUTH, SUCCESS, be_auth); 505 506 txReq(); 507 sm->authSuccess = TRUE; 508 sm->keyRun = TRUE; 509 } 510 511 512 SM_STATE(BE_AUTH, FAIL) 513 { 514 SM_ENTRY_MA(BE_AUTH, FAIL, be_auth); 515 516 txReq(); 517 sm->authFail = TRUE; 518 } 519 520 521 SM_STATE(BE_AUTH, TIMEOUT) 522 { 523 SM_ENTRY_MA(BE_AUTH, TIMEOUT, be_auth); 524 525 sm->authTimeout = TRUE; 526 } 527 528 529 SM_STATE(BE_AUTH, IDLE) 530 { 531 SM_ENTRY_MA(BE_AUTH, IDLE, be_auth); 532 533 sm->authStart = FALSE; 534 } 535 536 537 SM_STATE(BE_AUTH, IGNORE) 538 { 539 SM_ENTRY_MA(BE_AUTH, IGNORE, be_auth); 540 541 sm->eap_if->eapNoReq = FALSE; 542 } 543 544 545 SM_STEP(BE_AUTH) 546 { 547 if (sm->portControl != Auto || sm->initialize || sm->authAbort) { 548 SM_ENTER_GLOBAL(BE_AUTH, INITIALIZE); 549 return; 550 } 551 552 switch (sm->be_auth_state) { 553 case BE_AUTH_INITIALIZE: 554 SM_ENTER(BE_AUTH, IDLE); 555 break; 556 case BE_AUTH_REQUEST: 557 if (sm->eapolEap) 558 SM_ENTER(BE_AUTH, RESPONSE); 559 else if (sm->eap_if->eapReq) 560 SM_ENTER(BE_AUTH, REQUEST); 561 else if (sm->eap_if->eapTimeout) 562 SM_ENTER(BE_AUTH, TIMEOUT); 563 break; 564 case BE_AUTH_RESPONSE: 565 if (sm->eap_if->eapNoReq) 566 SM_ENTER(BE_AUTH, IGNORE); 567 if (sm->eap_if->eapReq) { 568 sm->backendAccessChallenges++; 569 SM_ENTER(BE_AUTH, REQUEST); 570 } else if (sm->aWhile == 0) 571 SM_ENTER(BE_AUTH, TIMEOUT); 572 else if (sm->eap_if->eapFail) { 573 sm->backendAuthFails++; 574 SM_ENTER(BE_AUTH, FAIL); 575 } else if (sm->eap_if->eapSuccess) { 576 sm->backendAuthSuccesses++; 577 SM_ENTER(BE_AUTH, SUCCESS); 578 } 579 break; 580 case BE_AUTH_SUCCESS: 581 SM_ENTER(BE_AUTH, IDLE); 582 break; 583 case BE_AUTH_FAIL: 584 SM_ENTER(BE_AUTH, IDLE); 585 break; 586 case BE_AUTH_TIMEOUT: 587 SM_ENTER(BE_AUTH, IDLE); 588 break; 589 case BE_AUTH_IDLE: 590 if (sm->eap_if->eapFail && sm->authStart) 591 SM_ENTER(BE_AUTH, FAIL); 592 else if (sm->eap_if->eapReq && sm->authStart) 593 SM_ENTER(BE_AUTH, REQUEST); 594 else if (sm->eap_if->eapSuccess && sm->authStart) 595 SM_ENTER(BE_AUTH, SUCCESS); 596 break; 597 case BE_AUTH_IGNORE: 598 if (sm->eapolEap) 599 SM_ENTER(BE_AUTH, RESPONSE); 600 else if (sm->eap_if->eapReq) 601 SM_ENTER(BE_AUTH, REQUEST); 602 else if (sm->eap_if->eapTimeout) 603 SM_ENTER(BE_AUTH, TIMEOUT); 604 break; 605 } 606 } 607 608 609 610 /* Reauthentication Timer state machine */ 611 612 SM_STATE(REAUTH_TIMER, INITIALIZE) 613 { 614 SM_ENTRY_MA(REAUTH_TIMER, INITIALIZE, reauth_timer); 615 616 sm->reAuthWhen = sm->reAuthPeriod; 617 } 618 619 620 SM_STATE(REAUTH_TIMER, REAUTHENTICATE) 621 { 622 SM_ENTRY_MA(REAUTH_TIMER, REAUTHENTICATE, reauth_timer); 623 624 sm->reAuthenticate = TRUE; 625 sm->eapol->cb.eapol_event(sm->eapol->conf.ctx, sm->sta, 626 EAPOL_AUTH_REAUTHENTICATE); 627 } 628 629 630 SM_STEP(REAUTH_TIMER) 631 { 632 if (sm->portControl != Auto || sm->initialize || 633 sm->authPortStatus == Unauthorized || !sm->reAuthEnabled) { 634 SM_ENTER_GLOBAL(REAUTH_TIMER, INITIALIZE); 635 return; 636 } 637 638 switch (sm->reauth_timer_state) { 639 case REAUTH_TIMER_INITIALIZE: 640 if (sm->reAuthWhen == 0) 641 SM_ENTER(REAUTH_TIMER, REAUTHENTICATE); 642 break; 643 case REAUTH_TIMER_REAUTHENTICATE: 644 SM_ENTER(REAUTH_TIMER, INITIALIZE); 645 break; 646 } 647 } 648 649 650 651 /* Authenticator Key Transmit state machine */ 652 653 SM_STATE(AUTH_KEY_TX, NO_KEY_TRANSMIT) 654 { 655 SM_ENTRY_MA(AUTH_KEY_TX, NO_KEY_TRANSMIT, auth_key_tx); 656 } 657 658 659 SM_STATE(AUTH_KEY_TX, KEY_TRANSMIT) 660 { 661 SM_ENTRY_MA(AUTH_KEY_TX, KEY_TRANSMIT, auth_key_tx); 662 663 txKey(); 664 sm->eap_if->eapKeyAvailable = FALSE; 665 sm->keyDone = TRUE; 666 } 667 668 669 SM_STEP(AUTH_KEY_TX) 670 { 671 if (sm->initialize || sm->portControl != Auto) { 672 SM_ENTER_GLOBAL(AUTH_KEY_TX, NO_KEY_TRANSMIT); 673 return; 674 } 675 676 switch (sm->auth_key_tx_state) { 677 case AUTH_KEY_TX_NO_KEY_TRANSMIT: 678 if (sm->keyTxEnabled && sm->eap_if->eapKeyAvailable && 679 sm->keyRun && !(sm->flags & EAPOL_SM_USES_WPA)) 680 SM_ENTER(AUTH_KEY_TX, KEY_TRANSMIT); 681 break; 682 case AUTH_KEY_TX_KEY_TRANSMIT: 683 if (!sm->keyTxEnabled || !sm->keyRun) 684 SM_ENTER(AUTH_KEY_TX, NO_KEY_TRANSMIT); 685 else if (sm->eap_if->eapKeyAvailable) 686 SM_ENTER(AUTH_KEY_TX, KEY_TRANSMIT); 687 break; 688 } 689 } 690 691 692 693 /* Key Receive state machine */ 694 695 SM_STATE(KEY_RX, NO_KEY_RECEIVE) 696 { 697 SM_ENTRY_MA(KEY_RX, NO_KEY_RECEIVE, key_rx); 698 } 699 700 701 SM_STATE(KEY_RX, KEY_RECEIVE) 702 { 703 SM_ENTRY_MA(KEY_RX, KEY_RECEIVE, key_rx); 704 705 processKey(); 706 sm->rxKey = FALSE; 707 } 708 709 710 SM_STEP(KEY_RX) 711 { 712 if (sm->initialize || !sm->eap_if->portEnabled) { 713 SM_ENTER_GLOBAL(KEY_RX, NO_KEY_RECEIVE); 714 return; 715 } 716 717 switch (sm->key_rx_state) { 718 case KEY_RX_NO_KEY_RECEIVE: 719 if (sm->rxKey) 720 SM_ENTER(KEY_RX, KEY_RECEIVE); 721 break; 722 case KEY_RX_KEY_RECEIVE: 723 if (sm->rxKey) 724 SM_ENTER(KEY_RX, KEY_RECEIVE); 725 break; 726 } 727 } 728 729 730 731 /* Controlled Directions state machine */ 732 733 SM_STATE(CTRL_DIR, FORCE_BOTH) 734 { 735 SM_ENTRY_MA(CTRL_DIR, FORCE_BOTH, ctrl_dir); 736 sm->operControlledDirections = Both; 737 } 738 739 740 SM_STATE(CTRL_DIR, IN_OR_BOTH) 741 { 742 SM_ENTRY_MA(CTRL_DIR, IN_OR_BOTH, ctrl_dir); 743 sm->operControlledDirections = sm->adminControlledDirections; 744 } 745 746 747 SM_STEP(CTRL_DIR) 748 { 749 if (sm->initialize) { 750 SM_ENTER_GLOBAL(CTRL_DIR, IN_OR_BOTH); 751 return; 752 } 753 754 switch (sm->ctrl_dir_state) { 755 case CTRL_DIR_FORCE_BOTH: 756 if (sm->eap_if->portEnabled && sm->operEdge) 757 SM_ENTER(CTRL_DIR, IN_OR_BOTH); 758 break; 759 case CTRL_DIR_IN_OR_BOTH: 760 if (sm->operControlledDirections != 761 sm->adminControlledDirections) 762 SM_ENTER(CTRL_DIR, IN_OR_BOTH); 763 if (!sm->eap_if->portEnabled || !sm->operEdge) 764 SM_ENTER(CTRL_DIR, FORCE_BOTH); 765 break; 766 } 767 } 768 769 770 771 struct eapol_state_machine * 772 eapol_auth_alloc(struct eapol_authenticator *eapol, const u8 *addr, 773 int flags, const struct wpabuf *assoc_wps_ie, 774 const struct wpabuf *assoc_p2p_ie, void *sta_ctx, 775 const char *identity, const char *radius_cui) 776 { 777 struct eapol_state_machine *sm; 778 struct eap_config eap_conf; 779 780 if (eapol == NULL) 781 return NULL; 782 783 sm = os_zalloc(sizeof(*sm)); 784 if (sm == NULL) { 785 wpa_printf(MSG_DEBUG, "IEEE 802.1X state machine allocation " 786 "failed"); 787 return NULL; 788 } 789 sm->radius_identifier = -1; 790 os_memcpy(sm->addr, addr, ETH_ALEN); 791 sm->flags = flags; 792 793 sm->eapol = eapol; 794 sm->sta = sta_ctx; 795 796 /* Set default values for state machine constants */ 797 sm->auth_pae_state = AUTH_PAE_INITIALIZE; 798 sm->quietPeriod = AUTH_PAE_DEFAULT_quietPeriod; 799 sm->reAuthMax = AUTH_PAE_DEFAULT_reAuthMax; 800 801 sm->be_auth_state = BE_AUTH_INITIALIZE; 802 sm->serverTimeout = BE_AUTH_DEFAULT_serverTimeout; 803 804 sm->reauth_timer_state = REAUTH_TIMER_INITIALIZE; 805 sm->reAuthPeriod = eapol->conf.eap_reauth_period; 806 sm->reAuthEnabled = eapol->conf.eap_reauth_period > 0 ? TRUE : FALSE; 807 808 sm->auth_key_tx_state = AUTH_KEY_TX_NO_KEY_TRANSMIT; 809 810 sm->key_rx_state = KEY_RX_NO_KEY_RECEIVE; 811 812 sm->ctrl_dir_state = CTRL_DIR_IN_OR_BOTH; 813 814 sm->portControl = Auto; 815 816 if (!eapol->conf.wpa && 817 (eapol->default_wep_key || eapol->conf.individual_wep_key_len > 0)) 818 sm->keyTxEnabled = TRUE; 819 else 820 sm->keyTxEnabled = FALSE; 821 if (eapol->conf.wpa) 822 sm->portValid = FALSE; 823 else 824 sm->portValid = TRUE; 825 826 os_memset(&eap_conf, 0, sizeof(eap_conf)); 827 eap_conf.eap_server = eapol->conf.eap_server; 828 eap_conf.ssl_ctx = eapol->conf.ssl_ctx; 829 eap_conf.msg_ctx = eapol->conf.msg_ctx; 830 eap_conf.eap_sim_db_priv = eapol->conf.eap_sim_db_priv; 831 eap_conf.pac_opaque_encr_key = eapol->conf.pac_opaque_encr_key; 832 eap_conf.eap_fast_a_id = eapol->conf.eap_fast_a_id; 833 eap_conf.eap_fast_a_id_len = eapol->conf.eap_fast_a_id_len; 834 eap_conf.eap_fast_a_id_info = eapol->conf.eap_fast_a_id_info; 835 eap_conf.eap_fast_prov = eapol->conf.eap_fast_prov; 836 eap_conf.pac_key_lifetime = eapol->conf.pac_key_lifetime; 837 eap_conf.pac_key_refresh_time = eapol->conf.pac_key_refresh_time; 838 eap_conf.eap_sim_aka_result_ind = eapol->conf.eap_sim_aka_result_ind; 839 eap_conf.tnc = eapol->conf.tnc; 840 eap_conf.wps = eapol->conf.wps; 841 eap_conf.assoc_wps_ie = assoc_wps_ie; 842 eap_conf.assoc_p2p_ie = assoc_p2p_ie; 843 eap_conf.peer_addr = addr; 844 eap_conf.fragment_size = eapol->conf.fragment_size; 845 eap_conf.pwd_group = eapol->conf.pwd_group; 846 eap_conf.pbc_in_m1 = eapol->conf.pbc_in_m1; 847 eap_conf.server_id = eapol->conf.server_id; 848 eap_conf.server_id_len = eapol->conf.server_id_len; 849 eap_conf.erp = eapol->conf.erp; 850 eap_conf.tls_session_lifetime = eapol->conf.tls_session_lifetime; 851 sm->eap = eap_server_sm_init(sm, &eapol_cb, &eap_conf); 852 if (sm->eap == NULL) { 853 eapol_auth_free(sm); 854 return NULL; 855 } 856 sm->eap_if = eap_get_interface(sm->eap); 857 858 eapol_auth_initialize(sm); 859 860 if (identity) { 861 sm->identity = (u8 *) os_strdup(identity); 862 if (sm->identity) 863 sm->identity_len = os_strlen(identity); 864 } 865 if (radius_cui) 866 sm->radius_cui = wpabuf_alloc_copy(radius_cui, 867 os_strlen(radius_cui)); 868 869 sm->acct_multi_session_id_lo = eapol->acct_multi_session_id_lo++; 870 if (eapol->acct_multi_session_id_lo == 0) 871 eapol->acct_multi_session_id_hi++; 872 sm->acct_multi_session_id_hi = eapol->acct_multi_session_id_hi; 873 874 return sm; 875 } 876 877 878 void eapol_auth_free(struct eapol_state_machine *sm) 879 { 880 if (sm == NULL) 881 return; 882 883 eloop_cancel_timeout(eapol_port_timers_tick, NULL, sm); 884 eloop_cancel_timeout(eapol_sm_step_cb, sm, NULL); 885 if (sm->eap) 886 eap_server_sm_deinit(sm->eap); 887 os_free(sm); 888 } 889 890 891 static int eapol_sm_sta_entry_alive(struct eapol_authenticator *eapol, 892 const u8 *addr) 893 { 894 return eapol->cb.sta_entry_alive(eapol->conf.ctx, addr); 895 } 896 897 898 static void eapol_sm_step_run(struct eapol_state_machine *sm) 899 { 900 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 int max_steps = 100; 905 906 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 prev_auth_pae = sm->auth_pae_state; 916 prev_be_auth = sm->be_auth_state; 917 prev_reauth_timer = sm->reauth_timer_state; 918 prev_auth_key_tx = sm->auth_key_tx_state; 919 prev_key_rx = sm->key_rx_state; 920 prev_ctrl_dir = sm->ctrl_dir_state; 921 922 SM_STEP_RUN(AUTH_PAE); 923 if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr)) 924 SM_STEP_RUN(BE_AUTH); 925 if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr)) 926 SM_STEP_RUN(REAUTH_TIMER); 927 if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr)) 928 SM_STEP_RUN(AUTH_KEY_TX); 929 if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr)) 930 SM_STEP_RUN(KEY_RX); 931 if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr)) 932 SM_STEP_RUN(CTRL_DIR); 933 934 if (prev_auth_pae != sm->auth_pae_state || 935 prev_be_auth != sm->be_auth_state || 936 prev_reauth_timer != sm->reauth_timer_state || 937 prev_auth_key_tx != sm->auth_key_tx_state || 938 prev_key_rx != sm->key_rx_state || 939 prev_ctrl_dir != sm->ctrl_dir_state) { 940 if (--max_steps > 0) 941 goto restart; 942 /* Re-run from eloop timeout */ 943 eapol_auth_step(sm); 944 return; 945 } 946 947 if (eapol_sm_sta_entry_alive(eapol, addr) && sm->eap) { 948 if (eap_server_sm_step(sm->eap)) { 949 if (--max_steps > 0) 950 goto restart; 951 /* Re-run from eloop timeout */ 952 eapol_auth_step(sm); 953 return; 954 } 955 956 /* TODO: find a better location for this */ 957 if (sm->eap_if->aaaEapResp) { 958 sm->eap_if->aaaEapResp = FALSE; 959 if (sm->eap_if->aaaEapRespData == NULL) { 960 wpa_printf(MSG_DEBUG, "EAPOL: aaaEapResp set, " 961 "but no aaaEapRespData available"); 962 return; 963 } 964 sm->eapol->cb.aaa_send( 965 sm->eapol->conf.ctx, sm->sta, 966 wpabuf_head(sm->eap_if->aaaEapRespData), 967 wpabuf_len(sm->eap_if->aaaEapRespData)); 968 } 969 } 970 971 if (eapol_sm_sta_entry_alive(eapol, addr)) 972 sm->eapol->cb.eapol_event(sm->eapol->conf.ctx, sm->sta, 973 EAPOL_AUTH_SM_CHANGE); 974 } 975 976 977 static void eapol_sm_step_cb(void *eloop_ctx, void *timeout_ctx) 978 { 979 struct eapol_state_machine *sm = eloop_ctx; 980 eapol_sm_step_run(sm); 981 } 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 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 eloop_register_timeout(0, 0, eapol_sm_step_cb, sm, NULL); 1000 } 1001 1002 1003 static void eapol_auth_initialize(struct eapol_state_machine *sm) 1004 { 1005 sm->initializing = TRUE; 1006 /* Initialize the state machines by asserting initialize and then 1007 * deasserting it after one step */ 1008 sm->initialize = TRUE; 1009 eapol_sm_step_run(sm); 1010 sm->initialize = FALSE; 1011 eapol_sm_step_run(sm); 1012 sm->initializing = FALSE; 1013 1014 /* Start one second tick for port timers state machine */ 1015 eloop_cancel_timeout(eapol_port_timers_tick, NULL, sm); 1016 eloop_register_timeout(1, 0, eapol_port_timers_tick, NULL, sm); 1017 } 1018 1019 1020 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 struct eapol_state_machine *sm = ctx; 1025 int ret; 1026 1027 ret = sm->eapol->cb.get_eap_user(sm->eapol->conf.ctx, identity, 1028 identity_len, phase2, user); 1029 if (user->remediation) 1030 sm->remediation = 1; 1031 return ret; 1032 } 1033 1034 1035 static const char * eapol_sm_get_eap_req_id_text(void *ctx, size_t *len) 1036 { 1037 struct eapol_state_machine *sm = ctx; 1038 *len = sm->eapol->conf.eap_req_id_text_len; 1039 return sm->eapol->conf.eap_req_id_text; 1040 } 1041 1042 1043 static int eapol_sm_get_erp_send_reauth_start(void *ctx) 1044 { 1045 struct eapol_state_machine *sm = ctx; 1046 return sm->eapol->conf.erp_send_reauth_start; 1047 } 1048 1049 1050 static const char * eapol_sm_get_erp_domain(void *ctx) 1051 { 1052 struct eapol_state_machine *sm = ctx; 1053 return sm->eapol->conf.erp_domain; 1054 } 1055 1056 1057 static struct eap_server_erp_key * eapol_sm_erp_get_key(void *ctx, 1058 const char *keyname) 1059 { 1060 struct eapol_state_machine *sm = ctx; 1061 return sm->eapol->cb.erp_get_key(sm->eapol->conf.ctx, keyname); 1062 } 1063 1064 1065 static int eapol_sm_erp_add_key(void *ctx, struct eap_server_erp_key *erp) 1066 { 1067 struct eapol_state_machine *sm = ctx; 1068 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 int eapol_auth_eap_pending_cb(struct eapol_state_machine *sm, void *ctx) 1085 { 1086 if (sm == NULL || ctx == NULL || ctx != sm->eap) 1087 return -1; 1088 1089 eap_sm_pending_cb(sm->eap); 1090 eapol_auth_step(sm); 1091 1092 return 0; 1093 } 1094 1095 1096 void eapol_auth_reauthenticate(struct eapol_state_machine *sm) 1097 { 1098 wpa_printf(MSG_DEBUG, "EAPOL: External reauthentication trigger for " 1099 MACSTR, MAC2STR(sm->addr)); 1100 sm->reAuthenticate = TRUE; 1101 eapol_auth_step(sm); 1102 } 1103 1104 1105 int eapol_auth_set_conf(struct eapol_state_machine *sm, const char *param, 1106 const char *value) 1107 { 1108 wpa_printf(MSG_DEBUG, "EAPOL: External configuration operation for " 1109 MACSTR " - param=%s value=%s", 1110 MAC2STR(sm->addr), param, value); 1111 1112 if (os_strcasecmp(param, "AdminControlledDirections") == 0) { 1113 if (os_strcmp(value, "Both") == 0) 1114 sm->adminControlledDirections = Both; 1115 else if (os_strcmp(value, "In") == 0) 1116 sm->adminControlledDirections = In; 1117 else 1118 return -1; 1119 eapol_auth_step(sm); 1120 return 0; 1121 } 1122 1123 if (os_strcasecmp(param, "AdminControlledPortControl") == 0) { 1124 if (os_strcmp(value, "ForceAuthorized") == 0) 1125 sm->portControl = ForceAuthorized; 1126 else if (os_strcmp(value, "ForceUnauthorized") == 0) 1127 sm->portControl = ForceUnauthorized; 1128 else if (os_strcmp(value, "Auto") == 0) 1129 sm->portControl = Auto; 1130 else 1131 return -1; 1132 eapol_auth_step(sm); 1133 return 0; 1134 } 1135 1136 if (os_strcasecmp(param, "quietPeriod") == 0) { 1137 sm->quietPeriod = atoi(value); 1138 return 0; 1139 } 1140 1141 if (os_strcasecmp(param, "serverTimeout") == 0) { 1142 sm->serverTimeout = atoi(value); 1143 return 0; 1144 } 1145 1146 if (os_strcasecmp(param, "reAuthPeriod") == 0) { 1147 sm->reAuthPeriod = atoi(value); 1148 return 0; 1149 } 1150 1151 if (os_strcasecmp(param, "reAuthEnabled") == 0) { 1152 if (os_strcmp(value, "TRUE") == 0) 1153 sm->reAuthEnabled = TRUE; 1154 else if (os_strcmp(value, "FALSE") == 0) 1155 sm->reAuthEnabled = FALSE; 1156 else 1157 return -1; 1158 eapol_auth_step(sm); 1159 return 0; 1160 } 1161 1162 if (os_strcasecmp(param, "KeyTransmissionEnabled") == 0) { 1163 if (os_strcmp(value, "TRUE") == 0) 1164 sm->keyTxEnabled = TRUE; 1165 else if (os_strcmp(value, "FALSE") == 0) 1166 sm->keyTxEnabled = FALSE; 1167 else 1168 return -1; 1169 eapol_auth_step(sm); 1170 return 0; 1171 } 1172 1173 return -1; 1174 } 1175 1176 1177 static int eapol_auth_conf_clone(struct eapol_auth_config *dst, 1178 struct eapol_auth_config *src) 1179 { 1180 dst->ctx = src->ctx; 1181 dst->eap_reauth_period = src->eap_reauth_period; 1182 dst->wpa = src->wpa; 1183 dst->individual_wep_key_len = src->individual_wep_key_len; 1184 dst->eap_server = src->eap_server; 1185 dst->ssl_ctx = src->ssl_ctx; 1186 dst->msg_ctx = src->msg_ctx; 1187 dst->eap_sim_db_priv = src->eap_sim_db_priv; 1188 os_free(dst->eap_req_id_text); 1189 dst->pwd_group = src->pwd_group; 1190 dst->pbc_in_m1 = src->pbc_in_m1; 1191 dst->server_id = src->server_id; 1192 dst->server_id_len = src->server_id_len; 1193 if (src->eap_req_id_text) { 1194 dst->eap_req_id_text = os_malloc(src->eap_req_id_text_len); 1195 if (dst->eap_req_id_text == NULL) 1196 return -1; 1197 os_memcpy(dst->eap_req_id_text, src->eap_req_id_text, 1198 src->eap_req_id_text_len); 1199 dst->eap_req_id_text_len = src->eap_req_id_text_len; 1200 } else { 1201 dst->eap_req_id_text = NULL; 1202 dst->eap_req_id_text_len = 0; 1203 } 1204 if (src->pac_opaque_encr_key) { 1205 dst->pac_opaque_encr_key = os_malloc(16); 1206 if (dst->pac_opaque_encr_key == NULL) 1207 goto fail; 1208 os_memcpy(dst->pac_opaque_encr_key, src->pac_opaque_encr_key, 1209 16); 1210 } else 1211 dst->pac_opaque_encr_key = NULL; 1212 if (src->eap_fast_a_id) { 1213 dst->eap_fast_a_id = os_malloc(src->eap_fast_a_id_len); 1214 if (dst->eap_fast_a_id == NULL) 1215 goto fail; 1216 os_memcpy(dst->eap_fast_a_id, src->eap_fast_a_id, 1217 src->eap_fast_a_id_len); 1218 dst->eap_fast_a_id_len = src->eap_fast_a_id_len; 1219 } else 1220 dst->eap_fast_a_id = NULL; 1221 if (src->eap_fast_a_id_info) { 1222 dst->eap_fast_a_id_info = os_strdup(src->eap_fast_a_id_info); 1223 if (dst->eap_fast_a_id_info == NULL) 1224 goto fail; 1225 } else 1226 dst->eap_fast_a_id_info = NULL; 1227 dst->eap_fast_prov = src->eap_fast_prov; 1228 dst->pac_key_lifetime = src->pac_key_lifetime; 1229 dst->pac_key_refresh_time = src->pac_key_refresh_time; 1230 dst->eap_sim_aka_result_ind = src->eap_sim_aka_result_ind; 1231 dst->tnc = src->tnc; 1232 dst->wps = src->wps; 1233 dst->fragment_size = src->fragment_size; 1234 1235 os_free(dst->erp_domain); 1236 if (src->erp_domain) { 1237 dst->erp_domain = os_strdup(src->erp_domain); 1238 if (dst->erp_domain == NULL) 1239 goto fail; 1240 } else { 1241 dst->erp_domain = NULL; 1242 } 1243 dst->erp_send_reauth_start = src->erp_send_reauth_start; 1244 dst->erp = src->erp; 1245 dst->tls_session_lifetime = src->tls_session_lifetime; 1246 1247 return 0; 1248 1249 fail: 1250 eapol_auth_conf_free(dst); 1251 return -1; 1252 } 1253 1254 1255 static void eapol_auth_conf_free(struct eapol_auth_config *conf) 1256 { 1257 os_free(conf->eap_req_id_text); 1258 conf->eap_req_id_text = NULL; 1259 os_free(conf->pac_opaque_encr_key); 1260 conf->pac_opaque_encr_key = NULL; 1261 os_free(conf->eap_fast_a_id); 1262 conf->eap_fast_a_id = NULL; 1263 os_free(conf->eap_fast_a_id_info); 1264 conf->eap_fast_a_id_info = NULL; 1265 os_free(conf->erp_domain); 1266 conf->erp_domain = NULL; 1267 } 1268 1269 1270 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 eapol = os_zalloc(sizeof(*eapol)); 1277 if (eapol == NULL) 1278 return NULL; 1279 1280 if (eapol_auth_conf_clone(&eapol->conf, conf) < 0) { 1281 os_free(eapol); 1282 return NULL; 1283 } 1284 1285 if (conf->individual_wep_key_len > 0) { 1286 /* use key0 in individual key and key1 in broadcast key */ 1287 eapol->default_wep_key_idx = 1; 1288 } 1289 1290 eapol->cb.eapol_send = cb->eapol_send; 1291 eapol->cb.aaa_send = cb->aaa_send; 1292 eapol->cb.finished = cb->finished; 1293 eapol->cb.get_eap_user = cb->get_eap_user; 1294 eapol->cb.sta_entry_alive = cb->sta_entry_alive; 1295 eapol->cb.logger = cb->logger; 1296 eapol->cb.set_port_authorized = cb->set_port_authorized; 1297 eapol->cb.abort_auth = cb->abort_auth; 1298 eapol->cb.tx_key = cb->tx_key; 1299 eapol->cb.eapol_event = cb->eapol_event; 1300 eapol->cb.erp_get_key = cb->erp_get_key; 1301 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 os_get_time(&now); 1307 eapol->acct_multi_session_id_hi = now.sec; 1308 1309 return eapol; 1310 } 1311 1312 1313 void eapol_auth_deinit(struct eapol_authenticator *eapol) 1314 { 1315 if (eapol == NULL) 1316 return; 1317 1318 eapol_auth_conf_free(&eapol->conf); 1319 os_free(eapol->default_wep_key); 1320 os_free(eapol); 1321 } 1322