eapol_auth_sm.c revision 351611
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 25static 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() \ 30sm->eapol->cb.set_port_authorized(sm->eapol->conf.ctx, sm->sta, 1) 31#define setPortUnauthorized() \ 32sm->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 43static void eapol_sm_step_run(struct eapol_state_machine *sm); 44static void eapol_sm_step_cb(void *eloop_ctx, void *timeout_ctx); 45static void eapol_auth_initialize(struct eapol_state_machine *sm); 46static void eapol_auth_conf_free(struct eapol_auth_config *conf); 47 48 49static 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 59static 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 85static 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 106static 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 */ 148static 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 197SM_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 216SM_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 241SM_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 258SM_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 270SM_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 297SM_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 323SM_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 337SM_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 356SM_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 368SM_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 380SM_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 455SM_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 465SM_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 488SM_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 502SM_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 512SM_STATE(BE_AUTH, FAIL) 513{ 514 SM_ENTRY_MA(BE_AUTH, FAIL, be_auth); 515 516 txReq(); 517 sm->authFail = TRUE; 518} 519 520 521SM_STATE(BE_AUTH, TIMEOUT) 522{ 523 SM_ENTRY_MA(BE_AUTH, TIMEOUT, be_auth); 524 525 sm->authTimeout = TRUE; 526} 527 528 529SM_STATE(BE_AUTH, IDLE) 530{ 531 SM_ENTRY_MA(BE_AUTH, IDLE, be_auth); 532 533 sm->authStart = FALSE; 534} 535 536 537SM_STATE(BE_AUTH, IGNORE) 538{ 539 SM_ENTRY_MA(BE_AUTH, IGNORE, be_auth); 540 541 sm->eap_if->eapNoReq = FALSE; 542} 543 544 545SM_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 612SM_STATE(REAUTH_TIMER, INITIALIZE) 613{ 614 SM_ENTRY_MA(REAUTH_TIMER, INITIALIZE, reauth_timer); 615 616 sm->reAuthWhen = sm->reAuthPeriod; 617} 618 619 620SM_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 630SM_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 653SM_STATE(AUTH_KEY_TX, NO_KEY_TRANSMIT) 654{ 655 SM_ENTRY_MA(AUTH_KEY_TX, NO_KEY_TRANSMIT, auth_key_tx); 656} 657 658 659SM_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 669SM_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 695SM_STATE(KEY_RX, NO_KEY_RECEIVE) 696{ 697 SM_ENTRY_MA(KEY_RX, NO_KEY_RECEIVE, key_rx); 698} 699 700 701SM_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 710SM_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 733SM_STATE(CTRL_DIR, FORCE_BOTH) 734{ 735 SM_ENTRY_MA(CTRL_DIR, FORCE_BOTH, ctrl_dir); 736 sm->operControlledDirections = Both; 737} 738 739 740SM_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 747SM_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 771struct eapol_state_machine * 772eapol_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_teap_auth = eapol->conf.eap_teap_auth; 839 eap_conf.eap_teap_pac_no_inner = eapol->conf.eap_teap_pac_no_inner; 840 eap_conf.eap_sim_aka_result_ind = eapol->conf.eap_sim_aka_result_ind; 841 eap_conf.eap_sim_id = eapol->conf.eap_sim_id; 842 eap_conf.tnc = eapol->conf.tnc; 843 eap_conf.wps = eapol->conf.wps; 844 eap_conf.assoc_wps_ie = assoc_wps_ie; 845 eap_conf.assoc_p2p_ie = assoc_p2p_ie; 846 eap_conf.peer_addr = addr; 847 eap_conf.fragment_size = eapol->conf.fragment_size; 848 eap_conf.pwd_group = eapol->conf.pwd_group; 849 eap_conf.pbc_in_m1 = eapol->conf.pbc_in_m1; 850 eap_conf.server_id = eapol->conf.server_id; 851 eap_conf.server_id_len = eapol->conf.server_id_len; 852 eap_conf.erp = eapol->conf.erp; 853 eap_conf.tls_session_lifetime = eapol->conf.tls_session_lifetime; 854 eap_conf.tls_flags = eapol->conf.tls_flags; 855 sm->eap = eap_server_sm_init(sm, &eapol_cb, &eap_conf); 856 if (sm->eap == NULL) { 857 eapol_auth_free(sm); 858 return NULL; 859 } 860 sm->eap_if = eap_get_interface(sm->eap); 861 862 eapol_auth_initialize(sm); 863 864 if (identity) { 865 sm->identity = (u8 *) os_strdup(identity); 866 if (sm->identity) 867 sm->identity_len = os_strlen(identity); 868 } 869 if (radius_cui) 870 sm->radius_cui = wpabuf_alloc_copy(radius_cui, 871 os_strlen(radius_cui)); 872 873#ifndef CONFIG_NO_RADIUS 874 if (radius_gen_session_id((u8 *) &sm->acct_multi_session_id, 875 sizeof(sm->acct_multi_session_id)) < 0) { 876 eapol_auth_free(sm); 877 return NULL; 878 } 879#endif /* CONFIG_NO_RADIUS */ 880 881 return sm; 882} 883 884 885void eapol_auth_free(struct eapol_state_machine *sm) 886{ 887 if (sm == NULL) 888 return; 889 890 eloop_cancel_timeout(eapol_port_timers_tick, NULL, sm); 891 eloop_cancel_timeout(eapol_sm_step_cb, sm, NULL); 892 if (sm->eap) 893 eap_server_sm_deinit(sm->eap); 894 895 wpabuf_free(sm->radius_cui); 896 os_free(sm->identity); 897 os_free(sm); 898} 899 900 901static int eapol_sm_sta_entry_alive(struct eapol_authenticator *eapol, 902 const u8 *addr) 903{ 904 return eapol->cb.sta_entry_alive(eapol->conf.ctx, addr); 905} 906 907 908static void eapol_sm_step_run(struct eapol_state_machine *sm) 909{ 910 struct eapol_authenticator *eapol = sm->eapol; 911 u8 addr[ETH_ALEN]; 912 unsigned int prev_auth_pae, prev_be_auth, prev_reauth_timer, 913 prev_auth_key_tx, prev_key_rx, prev_ctrl_dir; 914 int max_steps = 100; 915 916 os_memcpy(addr, sm->addr, ETH_ALEN); 917 918 /* 919 * Allow EAPOL state machines to run as long as there are state 920 * changes, but exit and return here through event loop if more than 921 * 100 steps is needed as a precaution against infinite loops inside 922 * eloop callback. 923 */ 924restart: 925 prev_auth_pae = sm->auth_pae_state; 926 prev_be_auth = sm->be_auth_state; 927 prev_reauth_timer = sm->reauth_timer_state; 928 prev_auth_key_tx = sm->auth_key_tx_state; 929 prev_key_rx = sm->key_rx_state; 930 prev_ctrl_dir = sm->ctrl_dir_state; 931 932 SM_STEP_RUN(AUTH_PAE); 933 if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr)) 934 SM_STEP_RUN(BE_AUTH); 935 if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr)) 936 SM_STEP_RUN(REAUTH_TIMER); 937 if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr)) 938 SM_STEP_RUN(AUTH_KEY_TX); 939 if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr)) 940 SM_STEP_RUN(KEY_RX); 941 if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr)) 942 SM_STEP_RUN(CTRL_DIR); 943 944 if (prev_auth_pae != sm->auth_pae_state || 945 prev_be_auth != sm->be_auth_state || 946 prev_reauth_timer != sm->reauth_timer_state || 947 prev_auth_key_tx != sm->auth_key_tx_state || 948 prev_key_rx != sm->key_rx_state || 949 prev_ctrl_dir != sm->ctrl_dir_state) { 950 if (--max_steps > 0) 951 goto restart; 952 /* Re-run from eloop timeout */ 953 eapol_auth_step(sm); 954 return; 955 } 956 957 if (eapol_sm_sta_entry_alive(eapol, addr) && sm->eap) { 958 if (eap_server_sm_step(sm->eap)) { 959 if (--max_steps > 0) 960 goto restart; 961 /* Re-run from eloop timeout */ 962 eapol_auth_step(sm); 963 return; 964 } 965 966 /* TODO: find a better location for this */ 967 if (sm->eap_if->aaaEapResp) { 968 sm->eap_if->aaaEapResp = FALSE; 969 if (sm->eap_if->aaaEapRespData == NULL) { 970 wpa_printf(MSG_DEBUG, "EAPOL: aaaEapResp set, " 971 "but no aaaEapRespData available"); 972 return; 973 } 974 sm->eapol->cb.aaa_send( 975 sm->eapol->conf.ctx, sm->sta, 976 wpabuf_head(sm->eap_if->aaaEapRespData), 977 wpabuf_len(sm->eap_if->aaaEapRespData)); 978 } 979 } 980 981 if (eapol_sm_sta_entry_alive(eapol, addr)) 982 sm->eapol->cb.eapol_event(sm->eapol->conf.ctx, sm->sta, 983 EAPOL_AUTH_SM_CHANGE); 984} 985 986 987static void eapol_sm_step_cb(void *eloop_ctx, void *timeout_ctx) 988{ 989 struct eapol_state_machine *sm = eloop_ctx; 990 eapol_sm_step_run(sm); 991} 992 993 994/** 995 * eapol_auth_step - Advance EAPOL state machines 996 * @sm: EAPOL state machine 997 * 998 * This function is called to advance EAPOL state machines after any change 999 * that could affect their state. 1000 */ 1001void eapol_auth_step(struct eapol_state_machine *sm) 1002{ 1003 /* 1004 * Run eapol_sm_step_run from a registered timeout to make sure that 1005 * other possible timeouts/events are processed and to avoid long 1006 * function call chains. 1007 */ 1008 1009 eloop_register_timeout(0, 0, eapol_sm_step_cb, sm, NULL); 1010} 1011 1012 1013static void eapol_auth_initialize(struct eapol_state_machine *sm) 1014{ 1015 sm->initializing = TRUE; 1016 /* Initialize the state machines by asserting initialize and then 1017 * deasserting it after one step */ 1018 sm->initialize = TRUE; 1019 eapol_sm_step_run(sm); 1020 sm->initialize = FALSE; 1021 eapol_sm_step_run(sm); 1022 sm->initializing = FALSE; 1023 1024 /* Start one second tick for port timers state machine */ 1025 eloop_cancel_timeout(eapol_port_timers_tick, NULL, sm); 1026 eloop_register_timeout(1, 0, eapol_port_timers_tick, NULL, sm); 1027} 1028 1029 1030static int eapol_sm_get_eap_user(void *ctx, const u8 *identity, 1031 size_t identity_len, int phase2, 1032 struct eap_user *user) 1033{ 1034 struct eapol_state_machine *sm = ctx; 1035 int ret; 1036 1037 ret = sm->eapol->cb.get_eap_user(sm->eapol->conf.ctx, identity, 1038 identity_len, phase2, user); 1039 if (user->remediation) 1040 sm->remediation = 1; 1041 return ret; 1042} 1043 1044 1045static const char * eapol_sm_get_eap_req_id_text(void *ctx, size_t *len) 1046{ 1047 struct eapol_state_machine *sm = ctx; 1048 *len = sm->eapol->conf.eap_req_id_text_len; 1049 return sm->eapol->conf.eap_req_id_text; 1050} 1051 1052 1053static int eapol_sm_get_erp_send_reauth_start(void *ctx) 1054{ 1055 struct eapol_state_machine *sm = ctx; 1056 return sm->eapol->conf.erp_send_reauth_start; 1057} 1058 1059 1060static const char * eapol_sm_get_erp_domain(void *ctx) 1061{ 1062 struct eapol_state_machine *sm = ctx; 1063 return sm->eapol->conf.erp_domain; 1064} 1065 1066 1067static struct eap_server_erp_key * eapol_sm_erp_get_key(void *ctx, 1068 const char *keyname) 1069{ 1070 struct eapol_state_machine *sm = ctx; 1071 return sm->eapol->cb.erp_get_key(sm->eapol->conf.ctx, keyname); 1072} 1073 1074 1075static int eapol_sm_erp_add_key(void *ctx, struct eap_server_erp_key *erp) 1076{ 1077 struct eapol_state_machine *sm = ctx; 1078 return sm->eapol->cb.erp_add_key(sm->eapol->conf.ctx, erp); 1079} 1080 1081 1082static const struct eapol_callbacks eapol_cb = 1083{ 1084 eapol_sm_get_eap_user, 1085 eapol_sm_get_eap_req_id_text, 1086 NULL, 1087 eapol_sm_get_erp_send_reauth_start, 1088 eapol_sm_get_erp_domain, 1089 eapol_sm_erp_get_key, 1090 eapol_sm_erp_add_key, 1091}; 1092 1093 1094int eapol_auth_eap_pending_cb(struct eapol_state_machine *sm, void *ctx) 1095{ 1096 if (sm == NULL || ctx == NULL || ctx != sm->eap) 1097 return -1; 1098 1099 eap_sm_pending_cb(sm->eap); 1100 eapol_auth_step(sm); 1101 1102 return 0; 1103} 1104 1105 1106void eapol_auth_reauthenticate(struct eapol_state_machine *sm) 1107{ 1108 wpa_printf(MSG_DEBUG, "EAPOL: External reauthentication trigger for " 1109 MACSTR, MAC2STR(sm->addr)); 1110 sm->reAuthenticate = TRUE; 1111 eapol_auth_step(sm); 1112} 1113 1114 1115int eapol_auth_set_conf(struct eapol_state_machine *sm, const char *param, 1116 const char *value) 1117{ 1118 wpa_printf(MSG_DEBUG, "EAPOL: External configuration operation for " 1119 MACSTR " - param=%s value=%s", 1120 MAC2STR(sm->addr), param, value); 1121 1122 if (os_strcasecmp(param, "AdminControlledDirections") == 0) { 1123 if (os_strcmp(value, "Both") == 0) 1124 sm->adminControlledDirections = Both; 1125 else if (os_strcmp(value, "In") == 0) 1126 sm->adminControlledDirections = In; 1127 else 1128 return -1; 1129 eapol_auth_step(sm); 1130 return 0; 1131 } 1132 1133 if (os_strcasecmp(param, "AdminControlledPortControl") == 0) { 1134 if (os_strcmp(value, "ForceAuthorized") == 0) 1135 sm->portControl = ForceAuthorized; 1136 else if (os_strcmp(value, "ForceUnauthorized") == 0) 1137 sm->portControl = ForceUnauthorized; 1138 else if (os_strcmp(value, "Auto") == 0) 1139 sm->portControl = Auto; 1140 else 1141 return -1; 1142 eapol_auth_step(sm); 1143 return 0; 1144 } 1145 1146 if (os_strcasecmp(param, "quietPeriod") == 0) { 1147 sm->quietPeriod = atoi(value); 1148 return 0; 1149 } 1150 1151 if (os_strcasecmp(param, "serverTimeout") == 0) { 1152 sm->serverTimeout = atoi(value); 1153 return 0; 1154 } 1155 1156 if (os_strcasecmp(param, "reAuthPeriod") == 0) { 1157 sm->reAuthPeriod = atoi(value); 1158 return 0; 1159 } 1160 1161 if (os_strcasecmp(param, "reAuthEnabled") == 0) { 1162 if (os_strcmp(value, "TRUE") == 0) 1163 sm->reAuthEnabled = TRUE; 1164 else if (os_strcmp(value, "FALSE") == 0) 1165 sm->reAuthEnabled = FALSE; 1166 else 1167 return -1; 1168 eapol_auth_step(sm); 1169 return 0; 1170 } 1171 1172 if (os_strcasecmp(param, "KeyTransmissionEnabled") == 0) { 1173 if (os_strcmp(value, "TRUE") == 0) 1174 sm->keyTxEnabled = TRUE; 1175 else if (os_strcmp(value, "FALSE") == 0) 1176 sm->keyTxEnabled = FALSE; 1177 else 1178 return -1; 1179 eapol_auth_step(sm); 1180 return 0; 1181 } 1182 1183 return -1; 1184} 1185 1186 1187static int eapol_auth_conf_clone(struct eapol_auth_config *dst, 1188 struct eapol_auth_config *src) 1189{ 1190 dst->ctx = src->ctx; 1191 dst->eap_reauth_period = src->eap_reauth_period; 1192 dst->wpa = src->wpa; 1193 dst->individual_wep_key_len = src->individual_wep_key_len; 1194 dst->eap_server = src->eap_server; 1195 dst->ssl_ctx = src->ssl_ctx; 1196 dst->msg_ctx = src->msg_ctx; 1197 dst->eap_sim_db_priv = src->eap_sim_db_priv; 1198 os_free(dst->eap_req_id_text); 1199 dst->pwd_group = src->pwd_group; 1200 dst->pbc_in_m1 = src->pbc_in_m1; 1201 dst->server_id = src->server_id; 1202 dst->server_id_len = src->server_id_len; 1203 if (src->eap_req_id_text) { 1204 dst->eap_req_id_text = os_memdup(src->eap_req_id_text, 1205 src->eap_req_id_text_len); 1206 if (dst->eap_req_id_text == NULL) 1207 return -1; 1208 dst->eap_req_id_text_len = src->eap_req_id_text_len; 1209 } else { 1210 dst->eap_req_id_text = NULL; 1211 dst->eap_req_id_text_len = 0; 1212 } 1213 if (src->pac_opaque_encr_key) { 1214 dst->pac_opaque_encr_key = os_memdup(src->pac_opaque_encr_key, 1215 16); 1216 if (dst->pac_opaque_encr_key == NULL) 1217 goto fail; 1218 } else 1219 dst->pac_opaque_encr_key = NULL; 1220 if (src->eap_fast_a_id) { 1221 dst->eap_fast_a_id = os_memdup(src->eap_fast_a_id, 1222 src->eap_fast_a_id_len); 1223 if (dst->eap_fast_a_id == NULL) 1224 goto fail; 1225 dst->eap_fast_a_id_len = src->eap_fast_a_id_len; 1226 } else 1227 dst->eap_fast_a_id = NULL; 1228 if (src->eap_fast_a_id_info) { 1229 dst->eap_fast_a_id_info = os_strdup(src->eap_fast_a_id_info); 1230 if (dst->eap_fast_a_id_info == NULL) 1231 goto fail; 1232 } else 1233 dst->eap_fast_a_id_info = NULL; 1234 dst->eap_fast_prov = src->eap_fast_prov; 1235 dst->pac_key_lifetime = src->pac_key_lifetime; 1236 dst->pac_key_refresh_time = src->pac_key_refresh_time; 1237 dst->eap_teap_auth = src->eap_teap_auth; 1238 dst->eap_teap_pac_no_inner = src->eap_teap_pac_no_inner; 1239 dst->eap_sim_aka_result_ind = src->eap_sim_aka_result_ind; 1240 dst->eap_sim_id = src->eap_sim_id; 1241 dst->tnc = src->tnc; 1242 dst->wps = src->wps; 1243 dst->fragment_size = src->fragment_size; 1244 1245 os_free(dst->erp_domain); 1246 if (src->erp_domain) { 1247 dst->erp_domain = os_strdup(src->erp_domain); 1248 if (dst->erp_domain == NULL) 1249 goto fail; 1250 } else { 1251 dst->erp_domain = NULL; 1252 } 1253 dst->erp_send_reauth_start = src->erp_send_reauth_start; 1254 dst->erp = src->erp; 1255 dst->tls_session_lifetime = src->tls_session_lifetime; 1256 dst->tls_flags = src->tls_flags; 1257 1258 return 0; 1259 1260fail: 1261 eapol_auth_conf_free(dst); 1262 return -1; 1263} 1264 1265 1266static void eapol_auth_conf_free(struct eapol_auth_config *conf) 1267{ 1268 os_free(conf->eap_req_id_text); 1269 conf->eap_req_id_text = NULL; 1270 os_free(conf->pac_opaque_encr_key); 1271 conf->pac_opaque_encr_key = NULL; 1272 os_free(conf->eap_fast_a_id); 1273 conf->eap_fast_a_id = NULL; 1274 os_free(conf->eap_fast_a_id_info); 1275 conf->eap_fast_a_id_info = NULL; 1276 os_free(conf->erp_domain); 1277 conf->erp_domain = NULL; 1278} 1279 1280 1281struct eapol_authenticator * eapol_auth_init(struct eapol_auth_config *conf, 1282 struct eapol_auth_cb *cb) 1283{ 1284 struct eapol_authenticator *eapol; 1285 1286 eapol = os_zalloc(sizeof(*eapol)); 1287 if (eapol == NULL) 1288 return NULL; 1289 1290 if (eapol_auth_conf_clone(&eapol->conf, conf) < 0) { 1291 os_free(eapol); 1292 return NULL; 1293 } 1294 1295 if (conf->individual_wep_key_len > 0) { 1296 /* use key0 in individual key and key1 in broadcast key */ 1297 eapol->default_wep_key_idx = 1; 1298 } 1299 1300 eapol->cb.eapol_send = cb->eapol_send; 1301 eapol->cb.aaa_send = cb->aaa_send; 1302 eapol->cb.finished = cb->finished; 1303 eapol->cb.get_eap_user = cb->get_eap_user; 1304 eapol->cb.sta_entry_alive = cb->sta_entry_alive; 1305 eapol->cb.logger = cb->logger; 1306 eapol->cb.set_port_authorized = cb->set_port_authorized; 1307 eapol->cb.abort_auth = cb->abort_auth; 1308 eapol->cb.tx_key = cb->tx_key; 1309 eapol->cb.eapol_event = cb->eapol_event; 1310 eapol->cb.erp_get_key = cb->erp_get_key; 1311 eapol->cb.erp_add_key = cb->erp_add_key; 1312 1313 return eapol; 1314} 1315 1316 1317void eapol_auth_deinit(struct eapol_authenticator *eapol) 1318{ 1319 if (eapol == NULL) 1320 return; 1321 1322 eapol_auth_conf_free(&eapol->conf); 1323 os_free(eapol->default_wep_key); 1324 os_free(eapol); 1325} 1326