src/eapol_auth/eapol_auth_sm.c

   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
 204 SM_STATE(AUTH_PAE, DISCONNECTED)
 205 {
 206         int from_initialize = sm->auth_pae_state == AUTH_PAE_INITIALIZE;
 207
 208         if (sm->eapolLogoff) {
 209                 if (sm->auth_pae_state == AUTH_PAE_CONNECTING)
 210                         sm->authEapLogoffsWhileConnecting++;
 211                 else if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATED)
 212                         sm->authAuthEapLogoffWhileAuthenticated++;
 213         }
 214
 215         SM_ENTRY_MA(AUTH_PAE, DISCONNECTED, auth_pae);
 216
 217         sm->authPortStatus = Unauthorized;
 218         setPortUnauthorized();
 219         sm->reAuthCount = 0;
 220         sm->eapolLogoff = FALSE;
 221         if (!from_initialize) {
 222                 sm->eapol->cb.finished(sm->eapol->conf.ctx, sm->sta, 0,
 223                                        sm->flags & EAPOL_SM_PREAUTH,
 224                                        sm->remediation);
 225         }
 226 }
 227
 228
 229 SM_STATE(AUTH_PAE, RESTART)
 230 {
 231         if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATED) {
 232                 if (sm->reAuthenticate)
 233                         sm->authAuthReauthsWhileAuthenticated++;
 234                 if (sm->eapolStart)
 235                         sm->authAuthEapStartsWhileAuthenticated++;
 236                 if (sm->eapolLogoff)
 237                         sm->authAuthEapLogoffWhileAuthenticated++;
 238         }
 239
 240         SM_ENTRY_MA(AUTH_PAE, RESTART, auth_pae);
 241
 242         sm->eap_if->eapRestart = TRUE;
 243 }
 244
 245
 246 SM_STATE(AUTH_PAE, CONNECTING)
 247 {
 248         if (sm->auth_pae_state != AUTH_PAE_CONNECTING)
 249                 sm->authEntersConnecting++;
 250
 251         SM_ENTRY_MA(AUTH_PAE, CONNECTING, auth_pae);
 252
 253         sm->reAuthenticate = FALSE;
 254         sm->reAuthCount++;
 255 }
 256
 257
 258 SM_STATE(AUTH_PAE, HELD)
 259 {
 260         if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATING && sm->authFail)
 261                 sm->authAuthFailWhileAuthenticating++;
 262
 263         SM_ENTRY_MA(AUTH_PAE, HELD, auth_pae);
 264
 265         sm->authPortStatus = Unauthorized;
 266         setPortUnauthorized();
 267         sm->quietWhile = sm->quietPeriod;
 268         sm->eapolLogoff = FALSE;
 269
 270         eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_WARNING,
 271                            "authentication failed - EAP type: %d (%s)",
 272                            sm->eap_type_authsrv,
 273                            eap_server_get_name(0, sm->eap_type_authsrv));
 274         if (sm->eap_type_authsrv != sm->eap_type_supp) {
 275                 eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_INFO,
 276                                    "Supplicant used different EAP type: "
 277                                    "%d (%s)", sm->eap_type_supp,
 278                                    eap_server_get_name(0, sm->eap_type_supp));
 279         }
 280         sm->eapol->cb.finished(sm->eapol->conf.ctx, sm->sta, 0,
 281                                sm->flags & EAPOL_SM_PREAUTH, sm->remediation);
 282 }
 283
 284
 285 SM_STATE(AUTH_PAE, AUTHENTICATED)
 286 {
 287         char *extra = "";
 288
 289         if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATING && sm->authSuccess)
 290                 sm->authAuthSuccessesWhileAuthenticating++;
 291
 292         SM_ENTRY_MA(AUTH_PAE, AUTHENTICATED, auth_pae);
 293
 294         sm->authPortStatus = Authorized;
 295         setPortAuthorized();
 296         sm->reAuthCount = 0;
 297         if (sm->flags & EAPOL_SM_PREAUTH)
 298                 extra = " (pre-authentication)";
 299         else if (sm->flags & EAPOL_SM_FROM_PMKSA_CACHE)
 300                 extra = " (PMKSA cache)";
 301         eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_INFO,
 302                            "authenticated - EAP type: %d (%s)%s",
 303                            sm->eap_type_authsrv,
 304                            eap_server_get_name(0, sm->eap_type_authsrv),
 305                            extra);
 306         sm->eapol->cb.finished(sm->eapol->conf.ctx, sm->sta, 1,
 307                                sm->flags & EAPOL_SM_PREAUTH, sm->remediation);
 308 }
 309
 310
 311 SM_STATE(AUTH_PAE, AUTHENTICATING)
 312 {
 313         SM_ENTRY_MA(AUTH_PAE, AUTHENTICATING, auth_pae);
 314
 315         sm->eapolStart = FALSE;
 316         sm->authSuccess = FALSE;
 317         sm->authFail = FALSE;
 318         sm->authTimeout = FALSE;
 319         sm->authStart = TRUE;
 320         sm->keyRun = FALSE;
 321         sm->keyDone = FALSE;
 322 }
 323
 324
 325 SM_STATE(AUTH_PAE, ABORTING)
 326 {
 327         if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATING) {
 328                 if (sm->authTimeout)
 329                         sm->authAuthTimeoutsWhileAuthenticating++;
 330                 if (sm->eapolStart)
 331                         sm->authAuthEapStartsWhileAuthenticating++;
 332                 if (sm->eapolLogoff)
 333                         sm->authAuthEapLogoffWhileAuthenticating++;
 334         }
 335
 336         SM_ENTRY_MA(AUTH_PAE, ABORTING, auth_pae);
 337
 338         sm->authAbort = TRUE;
 339         sm->keyRun = FALSE;
 340         sm->keyDone = FALSE;
 341 }
 342
 343
 344 SM_STATE(AUTH_PAE, FORCE_AUTH)
 345 {
 346         SM_ENTRY_MA(AUTH_PAE, FORCE_AUTH, auth_pae);
 347
 348         sm->authPortStatus = Authorized;
 349         setPortAuthorized();
 350         sm->portMode = ForceAuthorized;
 351         sm->eapolStart = FALSE;
 352         txCannedSuccess();
 353 }
 354
 355
 356 SM_STATE(AUTH_PAE, FORCE_UNAUTH)
 357 {
 358         SM_ENTRY_MA(AUTH_PAE, FORCE_UNAUTH, auth_pae);
 359
 360         sm->authPortStatus = Unauthorized;
 361         setPortUnauthorized();
 362         sm->portMode = ForceUnauthorized;
 363         sm->eapolStart = FALSE;
 364         txCannedFail();
 365 }
 366
 367
 368 SM_STEP(AUTH_PAE)
 369 {
 370         if ((sm->portControl == Auto && sm->portMode != sm->portControl) ||
 371             sm->initialize || !sm->eap_if->portEnabled)
 372                 SM_ENTER_GLOBAL(AUTH_PAE, INITIALIZE);
 373         else if (sm->portControl == ForceAuthorized &&
 374                  sm->portMode != sm->portControl &&
 375                  !(sm->initialize || !sm->eap_if->portEnabled))
 376                 SM_ENTER_GLOBAL(AUTH_PAE, FORCE_AUTH);
 377         else if (sm->portControl == ForceUnauthorized &&
 378                  sm->portMode != sm->portControl &&
 379                  !(sm->initialize || !sm->eap_if->portEnabled))
 380                 SM_ENTER_GLOBAL(AUTH_PAE, FORCE_UNAUTH);
 381         else {
 382                 switch (sm->auth_pae_state) {
 383                 case AUTH_PAE_INITIALIZE:
 384                         SM_ENTER(AUTH_PAE, DISCONNECTED);
 385                         break;
 386                 case AUTH_PAE_DISCONNECTED:
 387                         SM_ENTER(AUTH_PAE, RESTART);
 388                         break;
 389                 case AUTH_PAE_RESTART:
 390                         if (!sm->eap_if->eapRestart)
 391                                 SM_ENTER(AUTH_PAE, CONNECTING);
 392                         break;
 393                 case AUTH_PAE_HELD:
 394                         if (sm->quietWhile == 0)
 395                                 SM_ENTER(AUTH_PAE, RESTART);
 396                         break;
 397                 case AUTH_PAE_CONNECTING:
 398                         if (sm->eapolLogoff || sm->reAuthCount > sm->reAuthMax)
 399                                 SM_ENTER(AUTH_PAE, DISCONNECTED);
 400                         else if ((sm->eap_if->eapReq &&
 401                                   sm->reAuthCount <= sm->reAuthMax) ||
 402                                  sm->eap_if->eapSuccess || sm->eap_if->eapFail)
 403                                 SM_ENTER(AUTH_PAE, AUTHENTICATING);
 404                         break;
 405                 case AUTH_PAE_AUTHENTICATED:
 406                         if (sm->eapolStart || sm->reAuthenticate)
 407                                 SM_ENTER(AUTH_PAE, RESTART);
 408                         else if (sm->eapolLogoff || !sm->portValid)
 409                                 SM_ENTER(AUTH_PAE, DISCONNECTED);
 410                         break;
 411                 case AUTH_PAE_AUTHENTICATING:
 412                         if (sm->authSuccess && sm->portValid)
 413                                 SM_ENTER(AUTH_PAE, AUTHENTICATED);
 414                         else if (sm->authFail ||
 415                                  (sm->keyDone && !sm->portValid))
 416                                 SM_ENTER(AUTH_PAE, HELD);
 417                         else if (sm->eapolStart || sm->eapolLogoff ||
 418                                  sm->authTimeout)
 419                                 SM_ENTER(AUTH_PAE, ABORTING);
 420                         break;
 421                 case AUTH_PAE_ABORTING:
 422                         if (sm->eapolLogoff && !sm->authAbort)
 423                                 SM_ENTER(AUTH_PAE, DISCONNECTED);
 424                         else if (!sm->eapolLogoff && !sm->authAbort)
 425                                 SM_ENTER(AUTH_PAE, RESTART);
 426                         break;
 427                 case AUTH_PAE_FORCE_AUTH:
 428                         if (sm->eapolStart)
 429                                 SM_ENTER(AUTH_PAE, FORCE_AUTH);
 430                         break;
 431                 case AUTH_PAE_FORCE_UNAUTH:
 432                         if (sm->eapolStart)
 433                                 SM_ENTER(AUTH_PAE, FORCE_UNAUTH);
 434                         break;
 435                 }
 436         }
 437 }
 438
 439
 440
 441 /* Backend Authentication state machine */
 442
 443 SM_STATE(BE_AUTH, INITIALIZE)
 444 {
 445         SM_ENTRY_MA(BE_AUTH, INITIALIZE, be_auth);
 446
 447         abortAuth();
 448         sm->eap_if->eapNoReq = FALSE;
 449         sm->authAbort = FALSE;
 450 }
 451
 452
 453 SM_STATE(BE_AUTH, REQUEST)
 454 {
 455         SM_ENTRY_MA(BE_AUTH, REQUEST, be_auth);
 456
 457         txReq();
 458         sm->eap_if->eapReq = FALSE;
 459         sm->backendOtherRequestsToSupplicant++;
 460
 461         /*
 462          * Clearing eapolEap here is not specified in IEEE Std 802.1X-2004, but
 463          * it looks like this would be logical thing to do there since the old
 464          * EAP response would not be valid anymore after the new EAP request
 465          * was sent out.
 466          *
 467          * A race condition has been reported, in which hostapd ended up
 468          * sending out EAP-Response/Identity as a response to the first
 469          * EAP-Request from the main EAP method. This can be avoided by
 470          * clearing eapolEap here.
 471          */
 472         sm->eapolEap = FALSE;
 473 }
 474
 475
 476 SM_STATE(BE_AUTH, RESPONSE)
 477 {
 478         SM_ENTRY_MA(BE_AUTH, RESPONSE, be_auth);
 479
 480         sm->authTimeout = FALSE;
 481         sm->eapolEap = FALSE;
 482         sm->eap_if->eapNoReq = FALSE;
 483         sm->aWhile = sm->serverTimeout;
 484         sm->eap_if->eapResp = TRUE;
 485         /* sendRespToServer(); */
 486         sm->backendResponses++;
 487 }
 488
 489
 490 SM_STATE(BE_AUTH, SUCCESS)
 491 {
 492         SM_ENTRY_MA(BE_AUTH, SUCCESS, be_auth);
 493
 494         txReq();
 495         sm->authSuccess = TRUE;
 496         sm->keyRun = TRUE;
 497 }
 498
 499
 500 SM_STATE(BE_AUTH, FAIL)
 501 {
 502         SM_ENTRY_MA(BE_AUTH, FAIL, be_auth);
 503
 504         txReq();
 505         sm->authFail = TRUE;
 506 }
 507
 508
 509 SM_STATE(BE_AUTH, TIMEOUT)
 510 {
 511         SM_ENTRY_MA(BE_AUTH, TIMEOUT, be_auth);
 512
 513         sm->authTimeout = TRUE;
 514 }
 515
 516
 517 SM_STATE(BE_AUTH, IDLE)
 518 {
 519         SM_ENTRY_MA(BE_AUTH, IDLE, be_auth);
 520
 521         sm->authStart = FALSE;
 522 }
 523
 524
 525 SM_STATE(BE_AUTH, IGNORE)
 526 {
 527         SM_ENTRY_MA(BE_AUTH, IGNORE, be_auth);
 528
 529         sm->eap_if->eapNoReq = FALSE;
 530 }
 531
 532
 533 SM_STEP(BE_AUTH)
 534 {
 535         if (sm->portControl != Auto || sm->initialize || sm->authAbort) {
 536                 SM_ENTER_GLOBAL(BE_AUTH, INITIALIZE);
 537                 return;
 538         }
 539
 540         switch (sm->be_auth_state) {
 541         case BE_AUTH_INITIALIZE:
 542                 SM_ENTER(BE_AUTH, IDLE);
 543                 break;
 544         case BE_AUTH_REQUEST:
 545                 if (sm->eapolEap)
 546                         SM_ENTER(BE_AUTH, RESPONSE);
 547                 else if (sm->eap_if->eapReq)
 548                         SM_ENTER(BE_AUTH, REQUEST);
 549                 else if (sm->eap_if->eapTimeout)
 550                         SM_ENTER(BE_AUTH, TIMEOUT);
 551                 break;
 552         case BE_AUTH_RESPONSE:
 553                 if (sm->eap_if->eapNoReq)
 554                         SM_ENTER(BE_AUTH, IGNORE);
 555                 if (sm->eap_if->eapReq) {
 556                         sm->backendAccessChallenges++;
 557                         SM_ENTER(BE_AUTH, REQUEST);
 558                 } else if (sm->aWhile == 0)
 559                         SM_ENTER(BE_AUTH, TIMEOUT);
 560                 else if (sm->eap_if->eapFail) {
 561                         sm->backendAuthFails++;
 562                         SM_ENTER(BE_AUTH, FAIL);
 563                 } else if (sm->eap_if->eapSuccess) {
 564                         sm->backendAuthSuccesses++;
 565                         SM_ENTER(BE_AUTH, SUCCESS);
 566                 }
 567                 break;
 568         case BE_AUTH_SUCCESS:
 569                 SM_ENTER(BE_AUTH, IDLE);
 570                 break;
 571         case BE_AUTH_FAIL:
 572                 SM_ENTER(BE_AUTH, IDLE);
 573                 break;
 574         case BE_AUTH_TIMEOUT:
 575                 SM_ENTER(BE_AUTH, IDLE);
 576                 break;
 577         case BE_AUTH_IDLE:
 578                 if (sm->eap_if->eapFail && sm->authStart)
 579                         SM_ENTER(BE_AUTH, FAIL);
 580                 else if (sm->eap_if->eapReq && sm->authStart)
 581                         SM_ENTER(BE_AUTH, REQUEST);
 582                 else if (sm->eap_if->eapSuccess && sm->authStart)
 583                         SM_ENTER(BE_AUTH, SUCCESS);
 584                 break;
 585         case BE_AUTH_IGNORE:
 586                 if (sm->eapolEap)
 587                         SM_ENTER(BE_AUTH, RESPONSE);
 588                 else if (sm->eap_if->eapReq)
 589                         SM_ENTER(BE_AUTH, REQUEST);
 590                 else if (sm->eap_if->eapTimeout)
 591                         SM_ENTER(BE_AUTH, TIMEOUT);
 592                 break;
 593         }
 594 }
 595
 596
 597
 598 /* Reauthentication Timer state machine */
 599
 600 SM_STATE(REAUTH_TIMER, INITIALIZE)
 601 {
 602         SM_ENTRY_MA(REAUTH_TIMER, INITIALIZE, reauth_timer);
 603
 604         sm->reAuthWhen = sm->reAuthPeriod;
 605 }
 606
 607
 608 SM_STATE(REAUTH_TIMER, REAUTHENTICATE)
 609 {
 610         SM_ENTRY_MA(REAUTH_TIMER, REAUTHENTICATE, reauth_timer);
 611
 612         sm->reAuthenticate = TRUE;
 613         sm->eapol->cb.eapol_event(sm->eapol->conf.ctx, sm->sta,
 614                                   EAPOL_AUTH_REAUTHENTICATE);
 615 }
 616
 617
 618 SM_STEP(REAUTH_TIMER)
 619 {
 620         if (sm->portControl != Auto || sm->initialize ||
 621             sm->authPortStatus == Unauthorized || !sm->reAuthEnabled) {
 622                 SM_ENTER_GLOBAL(REAUTH_TIMER, INITIALIZE);
 623                 return;
 624         }
 625
 626         switch (sm->reauth_timer_state) {
 627         case REAUTH_TIMER_INITIALIZE:
 628                 if (sm->reAuthWhen == 0)
 629                         SM_ENTER(REAUTH_TIMER, REAUTHENTICATE);
 630                 break;
 631         case REAUTH_TIMER_REAUTHENTICATE:
 632                 SM_ENTER(REAUTH_TIMER, INITIALIZE);
 633                 break;
 634         }
 635 }
 636
 637
 638
 639 /* Authenticator Key Transmit state machine */
 640
 641 SM_STATE(AUTH_KEY_TX, NO_KEY_TRANSMIT)
 642 {
 643         SM_ENTRY_MA(AUTH_KEY_TX, NO_KEY_TRANSMIT, auth_key_tx);
 644 }
 645
 646
 647 SM_STATE(AUTH_KEY_TX, KEY_TRANSMIT)
 648 {
 649         SM_ENTRY_MA(AUTH_KEY_TX, KEY_TRANSMIT, auth_key_tx);
 650
 651         txKey();
 652         sm->eap_if->eapKeyAvailable = FALSE;
 653         sm->keyDone = TRUE;
 654 }
 655
 656
 657 SM_STEP(AUTH_KEY_TX)
 658 {
 659         if (sm->initialize || sm->portControl != Auto) {
 660                 SM_ENTER_GLOBAL(AUTH_KEY_TX, NO_KEY_TRANSMIT);
 661                 return;
 662         }
 663
 664         switch (sm->auth_key_tx_state) {
 665         case AUTH_KEY_TX_NO_KEY_TRANSMIT:
 666                 if (sm->keyTxEnabled && sm->eap_if->eapKeyAvailable &&
 667                     sm->keyRun && !(sm->flags & EAPOL_SM_USES_WPA))
 668                         SM_ENTER(AUTH_KEY_TX, KEY_TRANSMIT);
 669                 break;
 670         case AUTH_KEY_TX_KEY_TRANSMIT:
 671                 if (!sm->keyTxEnabled || !sm->keyRun)
 672                         SM_ENTER(AUTH_KEY_TX, NO_KEY_TRANSMIT);
 673                 else if (sm->eap_if->eapKeyAvailable)
 674                         SM_ENTER(AUTH_KEY_TX, KEY_TRANSMIT);
 675                 break;
 676         }
 677 }
 678
 679
 680
 681 /* Key Receive state machine */
 682
 683 SM_STATE(KEY_RX, NO_KEY_RECEIVE)
 684 {
 685         SM_ENTRY_MA(KEY_RX, NO_KEY_RECEIVE, key_rx);
 686 }
 687
 688
 689 SM_STATE(KEY_RX, KEY_RECEIVE)
 690 {
 691         SM_ENTRY_MA(KEY_RX, KEY_RECEIVE, key_rx);
 692
 693         processKey();
 694         sm->rxKey = FALSE;
 695 }
 696
 697
 698 SM_STEP(KEY_RX)
 699 {
 700         if (sm->initialize || !sm->eap_if->portEnabled) {
 701                 SM_ENTER_GLOBAL(KEY_RX, NO_KEY_RECEIVE);
 702                 return;
 703         }
 704
 705         switch (sm->key_rx_state) {
 706         case KEY_RX_NO_KEY_RECEIVE:
 707                 if (sm->rxKey)
 708                         SM_ENTER(KEY_RX, KEY_RECEIVE);
 709                 break;
 710         case KEY_RX_KEY_RECEIVE:
 711                 if (sm->rxKey)
 712                         SM_ENTER(KEY_RX, KEY_RECEIVE);
 713                 break;
 714         }
 715 }
 716
 717
 718
 719 /* Controlled Directions state machine */
 720
 721 SM_STATE(CTRL_DIR, FORCE_BOTH)
 722 {
 723         SM_ENTRY_MA(CTRL_DIR, FORCE_BOTH, ctrl_dir);
 724         sm->operControlledDirections = Both;
 725 }
 726
 727
 728 SM_STATE(CTRL_DIR, IN_OR_BOTH)
 729 {
 730         SM_ENTRY_MA(CTRL_DIR, IN_OR_BOTH, ctrl_dir);
 731         sm->operControlledDirections = sm->adminControlledDirections;
 732 }
 733
 734
 735 SM_STEP(CTRL_DIR)
 736 {
 737         if (sm->initialize) {
 738                 SM_ENTER_GLOBAL(CTRL_DIR, IN_OR_BOTH);
 739                 return;
 740         }
 741
 742         switch (sm->ctrl_dir_state) {
 743         case CTRL_DIR_FORCE_BOTH:
 744                 if (sm->eap_if->portEnabled && sm->operEdge)
 745                         SM_ENTER(CTRL_DIR, IN_OR_BOTH);
 746                 break;
 747         case CTRL_DIR_IN_OR_BOTH:
 748                 if (sm->operControlledDirections !=
 749                     sm->adminControlledDirections)
 750                         SM_ENTER(CTRL_DIR, IN_OR_BOTH);
 751                 if (!sm->eap_if->portEnabled || !sm->operEdge)
 752                         SM_ENTER(CTRL_DIR, FORCE_BOTH);
 753                 break;
 754         }
 755 }
 756
 757
 758
 759 struct eapol_state_machine *
 760 eapol_auth_alloc(struct eapol_authenticator *eapol, const u8 *addr,
 761                  int flags, const struct wpabuf *assoc_wps_ie,
 762                  const struct wpabuf *assoc_p2p_ie, void *sta_ctx,
 763                  const char *identity, const char *radius_cui)
 764 {
 765         struct eapol_state_machine *sm;
 766         struct eap_config eap_conf;
 767
 768         if (eapol == NULL)
 769                 return NULL;
 770
 771         sm = os_zalloc(sizeof(*sm));
 772         if (sm == NULL) {
 773                 wpa_printf(MSG_DEBUG, "IEEE 802.1X state machine allocation "
 774                            "failed");
 775                 return NULL;
 776         }
 777         sm->radius_identifier = -1;
 778         os_memcpy(sm->addr, addr, ETH_ALEN);
 779         sm->flags = flags;
 780
 781         sm->eapol = eapol;
 782         sm->sta = sta_ctx;
 783
 784         /* Set default values for state machine constants */
 785         sm->auth_pae_state = AUTH_PAE_INITIALIZE;
 786         sm->quietPeriod = AUTH_PAE_DEFAULT_quietPeriod;
 787         sm->reAuthMax = AUTH_PAE_DEFAULT_reAuthMax;
 788
 789         sm->be_auth_state = BE_AUTH_INITIALIZE;
 790         sm->serverTimeout = BE_AUTH_DEFAULT_serverTimeout;
 791
 792         sm->reauth_timer_state = REAUTH_TIMER_INITIALIZE;
 793         sm->reAuthPeriod = eapol->conf.eap_reauth_period;
 794         sm->reAuthEnabled = eapol->conf.eap_reauth_period > 0 ? TRUE : FALSE;
 795
 796         sm->auth_key_tx_state = AUTH_KEY_TX_NO_KEY_TRANSMIT;
 797
 798         sm->key_rx_state = KEY_RX_NO_KEY_RECEIVE;
 799
 800         sm->ctrl_dir_state = CTRL_DIR_IN_OR_BOTH;
 801
 802         sm->portControl = Auto;
 803
 804         if (!eapol->conf.wpa &&
 805             (eapol->default_wep_key || eapol->conf.individual_wep_key_len > 0))
 806                 sm->keyTxEnabled = TRUE;
 807         else
 808                 sm->keyTxEnabled = FALSE;
 809         if (eapol->conf.wpa)
 810                 sm->portValid = FALSE;
 811         else
 812                 sm->portValid = TRUE;
 813
 814         os_memset(&eap_conf, 0, sizeof(eap_conf));
 815         eap_conf.eap_server = eapol->conf.eap_server;
 816         eap_conf.ssl_ctx = eapol->conf.ssl_ctx;
 817         eap_conf.msg_ctx = eapol->conf.msg_ctx;
 818         eap_conf.eap_sim_db_priv = eapol->conf.eap_sim_db_priv;
 819         eap_conf.pac_opaque_encr_key = eapol->conf.pac_opaque_encr_key;
 820         eap_conf.eap_fast_a_id = eapol->conf.eap_fast_a_id;
 821         eap_conf.eap_fast_a_id_len = eapol->conf.eap_fast_a_id_len;
 822         eap_conf.eap_fast_a_id_info = eapol->conf.eap_fast_a_id_info;
 823         eap_conf.eap_fast_prov = eapol->conf.eap_fast_prov;
 824         eap_conf.pac_key_lifetime = eapol->conf.pac_key_lifetime;
 825         eap_conf.pac_key_refresh_time = eapol->conf.pac_key_refresh_time;
 826         eap_conf.eap_sim_aka_result_ind = eapol->conf.eap_sim_aka_result_ind;
 827         eap_conf.tnc = eapol->conf.tnc;
 828         eap_conf.wps = eapol->conf.wps;
 829         eap_conf.assoc_wps_ie = assoc_wps_ie;
 830         eap_conf.assoc_p2p_ie = assoc_p2p_ie;
 831         eap_conf.peer_addr = addr;
 832         eap_conf.fragment_size = eapol->conf.fragment_size;
 833         eap_conf.pwd_group = eapol->conf.pwd_group;
 834         eap_conf.pbc_in_m1 = eapol->conf.pbc_in_m1;
 835         eap_conf.server_id = eapol->conf.server_id;
 836         eap_conf.server_id_len = eapol->conf.server_id_len;
 837         eap_conf.erp = eapol->conf.erp;
 838         eap_conf.tls_session_lifetime = eapol->conf.tls_session_lifetime;
 839         sm->eap = eap_server_sm_init(sm, &eapol_cb, &eap_conf);
 840         if (sm->eap == NULL) {
 841                 eapol_auth_free(sm);
 842                 return NULL;
 843         }
 844         sm->eap_if = eap_get_interface(sm->eap);
 845
 846         eapol_auth_initialize(sm);
 847
 848         if (identity) {
 849                 sm->identity = (u8 *) os_strdup(identity);
 850                 if (sm->identity)
 851                         sm->identity_len = os_strlen(identity);
 852         }
 853         if (radius_cui)
 854                 sm->radius_cui = wpabuf_alloc_copy(radius_cui,
 855                                                    os_strlen(radius_cui));
 856
 857         sm->acct_multi_session_id_lo = eapol->acct_multi_session_id_lo++;
 858         if (eapol->acct_multi_session_id_lo == 0)
 859                 eapol->acct_multi_session_id_hi++;
 860         sm->acct_multi_session_id_hi = eapol->acct_multi_session_id_hi;
 861
 862         return sm;
 863 }
 864
 865
 866 void eapol_auth_free(struct eapol_state_machine *sm)
 867 {
 868         if (sm == NULL)
 869                 return;
 870
 871         eloop_cancel_timeout(eapol_port_timers_tick, NULL, sm);
 872         eloop_cancel_timeout(eapol_sm_step_cb, sm, NULL);
 873         if (sm->eap)
 874                 eap_server_sm_deinit(sm->eap);
 875         os_free(sm);
 876 }
 877
 878
 879 static int eapol_sm_sta_entry_alive(struct eapol_authenticator *eapol,
 880                                     const u8 *addr)
 881 {
 882         return eapol->cb.sta_entry_alive(eapol->conf.ctx, addr);
 883 }
 884
 885
 886 static void eapol_sm_step_run(struct eapol_state_machine *sm)
 887 {
 888         struct eapol_authenticator *eapol = sm->eapol;
 889         u8 addr[ETH_ALEN];
 890         unsigned int prev_auth_pae, prev_be_auth, prev_reauth_timer,
 891                 prev_auth_key_tx, prev_key_rx, prev_ctrl_dir;
 892         int max_steps = 100;
 893
 894         os_memcpy(addr, sm->addr, ETH_ALEN);
 895
 896         /*
 897          * Allow EAPOL state machines to run as long as there are state
 898          * changes, but exit and return here through event loop if more than
 899          * 100 steps is needed as a precaution against infinite loops inside
 900          * eloop callback.
 901          */
 902 restart:
 903         prev_auth_pae = sm->auth_pae_state;
 904         prev_be_auth = sm->be_auth_state;
 905         prev_reauth_timer = sm->reauth_timer_state;
 906         prev_auth_key_tx = sm->auth_key_tx_state;
 907         prev_key_rx = sm->key_rx_state;
 908         prev_ctrl_dir = sm->ctrl_dir_state;
 909
 910         SM_STEP_RUN(AUTH_PAE);
 911         if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
 912                 SM_STEP_RUN(BE_AUTH);
 913         if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
 914                 SM_STEP_RUN(REAUTH_TIMER);
 915         if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
 916                 SM_STEP_RUN(AUTH_KEY_TX);
 917         if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
 918                 SM_STEP_RUN(KEY_RX);
 919         if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
 920                 SM_STEP_RUN(CTRL_DIR);
 921
 922         if (prev_auth_pae != sm->auth_pae_state ||
 923             prev_be_auth != sm->be_auth_state ||
 924             prev_reauth_timer != sm->reauth_timer_state ||
 925             prev_auth_key_tx != sm->auth_key_tx_state ||
 926             prev_key_rx != sm->key_rx_state ||
 927             prev_ctrl_dir != sm->ctrl_dir_state) {
 928                 if (--max_steps > 0)
 929                         goto restart;
 930                 /* Re-run from eloop timeout */
 931                 eapol_auth_step(sm);
 932                 return;
 933         }
 934
 935         if (eapol_sm_sta_entry_alive(eapol, addr) && sm->eap) {
 936                 if (eap_server_sm_step(sm->eap)) {
 937                         if (--max_steps > 0)
 938                                 goto restart;
 939                         /* Re-run from eloop timeout */
 940                         eapol_auth_step(sm);
 941                         return;
 942                 }
 943
 944                 /* TODO: find a better location for this */
 945                 if (sm->eap_if->aaaEapResp) {
 946                         sm->eap_if->aaaEapResp = FALSE;
 947                         if (sm->eap_if->aaaEapRespData == NULL) {
 948                                 wpa_printf(MSG_DEBUG, "EAPOL: aaaEapResp set, "
 949                                            "but no aaaEapRespData available");
 950                                 return;
 951                         }
 952                         sm->eapol->cb.aaa_send(
 953                                 sm->eapol->conf.ctx, sm->sta,
 954                                 wpabuf_head(sm->eap_if->aaaEapRespData),
 955                                 wpabuf_len(sm->eap_if->aaaEapRespData));
 956                 }
 957         }
 958
 959         if (eapol_sm_sta_entry_alive(eapol, addr))
 960                 sm->eapol->cb.eapol_event(sm->eapol->conf.ctx, sm->sta,
 961                                           EAPOL_AUTH_SM_CHANGE);
 962 }
 963
 964
 965 static void eapol_sm_step_cb(void *eloop_ctx, void *timeout_ctx)
 966 {
 967         struct eapol_state_machine *sm = eloop_ctx;
 968         eapol_sm_step_run(sm);
 969 }
 970
 971
 972 /**
 973  * eapol_auth_step - Advance EAPOL state machines
 974  * @sm: EAPOL state machine
 975  *
 976  * This function is called to advance EAPOL state machines after any change
 977  * that could affect their state.
 978  */
 979 void eapol_auth_step(struct eapol_state_machine *sm)
 980 {
 981         /*
 982          * Run eapol_sm_step_run from a registered timeout to make sure that
 983          * other possible timeouts/events are processed and to avoid long
 984          * function call chains.
 985          */
 986
 987         eloop_register_timeout(0, 0, eapol_sm_step_cb, sm, NULL);
 988 }
 989
 990
 991 static void eapol_auth_initialize(struct eapol_state_machine *sm)
 992 {
 993         sm->initializing = TRUE;
 994         /* Initialize the state machines by asserting initialize and then
 995          * deasserting it after one step */
 996         sm->initialize = TRUE;
 997         eapol_sm_step_run(sm);
 998         sm->initialize = FALSE;
 999         eapol_sm_step_run(sm);
1000         sm->initializing = FALSE;
1001
1002         /* Start one second tick for port timers state machine */
1003         eloop_cancel_timeout(eapol_port_timers_tick, NULL, sm);
1004         eloop_register_timeout(1, 0, eapol_port_timers_tick, NULL, sm);
1005 }
1006
1007
1008 static int eapol_sm_get_eap_user(void *ctx, const u8 *identity,
1009                                  size_t identity_len, int phase2,
1010                                  struct eap_user *user)
1011 {
1012         struct eapol_state_machine *sm = ctx;
1013         int ret;
1014
1015         ret = sm->eapol->cb.get_eap_user(sm->eapol->conf.ctx, identity,
1016                                          identity_len, phase2, user);
1017         if (user->remediation)
1018                 sm->remediation = 1;
1019         return ret;
1020 }
1021
1022
1023 static const char * eapol_sm_get_eap_req_id_text(void *ctx, size_t *len)
1024 {
1025         struct eapol_state_machine *sm = ctx;
1026         *len = sm->eapol->conf.eap_req_id_text_len;
1027         return sm->eapol->conf.eap_req_id_text;
1028 }
1029
1030
1031 static int eapol_sm_get_erp_send_reauth_start(void *ctx)
1032 {
1033         struct eapol_state_machine *sm = ctx;
1034         return sm->eapol->conf.erp_send_reauth_start;
1035 }
1036
1037
1038 static const char * eapol_sm_get_erp_domain(void *ctx)
1039 {
1040         struct eapol_state_machine *sm = ctx;
1041         return sm->eapol->conf.erp_domain;
1042 }
1043
1044
1045 static struct eap_server_erp_key * eapol_sm_erp_get_key(void *ctx,
1046                                                         const char *keyname)
1047 {
1048         struct eapol_state_machine *sm = ctx;
1049         return sm->eapol->cb.erp_get_key(sm->eapol->conf.ctx, keyname);
1050 }
1051
1052
1053 static int eapol_sm_erp_add_key(void *ctx, struct eap_server_erp_key *erp)
1054 {
1055         struct eapol_state_machine *sm = ctx;
1056         return sm->eapol->cb.erp_add_key(sm->eapol->conf.ctx, erp);
1057 }
1058
1059
1060 static const struct eapol_callbacks eapol_cb =
1061 {
1062         eapol_sm_get_eap_user,
1063         eapol_sm_get_eap_req_id_text,
1064         NULL,
1065         eapol_sm_get_erp_send_reauth_start,
1066         eapol_sm_get_erp_domain,
1067         eapol_sm_erp_get_key,
1068         eapol_sm_erp_add_key,
1069 };
1070
1071
1072 int eapol_auth_eap_pending_cb(struct eapol_state_machine *sm, void *ctx)
1073 {
1074         if (sm == NULL || ctx == NULL || ctx != sm->eap)
1075                 return -1;
1076
1077         eap_sm_pending_cb(sm->eap);
1078         eapol_auth_step(sm);
1079
1080         return 0;
1081 }
1082
1083
1084 void eapol_auth_reauthenticate(struct eapol_state_machine *sm)
1085 {
1086         wpa_printf(MSG_DEBUG, "EAPOL: External reauthentication trigger for "
1087                    MACSTR, MAC2STR(sm->addr));
1088         sm->reAuthenticate = TRUE;
1089         eapol_auth_step(sm);
1090 }
1091
1092
1093 int eapol_auth_set_conf(struct eapol_state_machine *sm, const char *param,
1094                         const char *value)
1095 {
1096         wpa_printf(MSG_DEBUG, "EAPOL: External configuration operation for "
1097                    MACSTR " - param=%s value=%s",
1098                    MAC2STR(sm->addr), param, value);
1099
1100         if (os_strcasecmp(param, "AdminControlledDirections") == 0) {
1101                 if (os_strcmp(value, "Both") == 0)
1102                         sm->adminControlledDirections = Both;
1103                 else if (os_strcmp(value, "In") == 0)
1104                         sm->adminControlledDirections = In;
1105                 else
1106                         return -1;
1107                 eapol_auth_step(sm);
1108                 return 0;
1109         }
1110
1111         if (os_strcasecmp(param, "AdminControlledPortControl") == 0) {
1112                 if (os_strcmp(value, "ForceAuthorized") == 0)
1113                         sm->portControl = ForceAuthorized;
1114                 else if (os_strcmp(value, "ForceUnauthorized") == 0)
1115                         sm->portControl = ForceUnauthorized;
1116                 else if (os_strcmp(value, "Auto") == 0)
1117                         sm->portControl = Auto;
1118                 else
1119                         return -1;
1120                 eapol_auth_step(sm);
1121                 return 0;
1122         }
1123
1124         if (os_strcasecmp(param, "quietPeriod") == 0) {
1125                 sm->quietPeriod = atoi(value);
1126                 return 0;
1127         }
1128
1129         if (os_strcasecmp(param, "serverTimeout") == 0) {
1130                 sm->serverTimeout = atoi(value);
1131                 return 0;
1132         }
1133
1134         if (os_strcasecmp(param, "reAuthPeriod") == 0) {
1135                 sm->reAuthPeriod = atoi(value);
1136                 return 0;
1137         }
1138
1139         if (os_strcasecmp(param, "reAuthEnabled") == 0) {
1140                 if (os_strcmp(value, "TRUE") == 0)
1141                         sm->reAuthEnabled = TRUE;
1142                 else if (os_strcmp(value, "FALSE") == 0)
1143                         sm->reAuthEnabled = FALSE;
1144                 else
1145                         return -1;
1146                 eapol_auth_step(sm);
1147                 return 0;
1148         }
1149
1150         if (os_strcasecmp(param, "KeyTransmissionEnabled") == 0) {
1151                 if (os_strcmp(value, "TRUE") == 0)
1152                         sm->keyTxEnabled = TRUE;
1153                 else if (os_strcmp(value, "FALSE") == 0)
1154                         sm->keyTxEnabled = FALSE;
1155                 else
1156                         return -1;
1157                 eapol_auth_step(sm);
1158                 return 0;
1159         }
1160
1161         return -1;
1162 }
1163
1164
1165 static int eapol_auth_conf_clone(struct eapol_auth_config *dst,
1166                                  struct eapol_auth_config *src)
1167 {
1168         dst->ctx = src->ctx;
1169         dst->eap_reauth_period = src->eap_reauth_period;
1170         dst->wpa = src->wpa;
1171         dst->individual_wep_key_len = src->individual_wep_key_len;
1172         dst->eap_server = src->eap_server;
1173         dst->ssl_ctx = src->ssl_ctx;
1174         dst->msg_ctx = src->msg_ctx;
1175         dst->eap_sim_db_priv = src->eap_sim_db_priv;
1176         os_free(dst->eap_req_id_text);
1177         dst->pwd_group = src->pwd_group;
1178         dst->pbc_in_m1 = src->pbc_in_m1;
1179         dst->server_id = src->server_id;
1180         dst->server_id_len = src->server_id_len;
1181         if (src->eap_req_id_text) {
1182                 dst->eap_req_id_text = os_malloc(src->eap_req_id_text_len);
1183                 if (dst->eap_req_id_text == NULL)
1184                         return -1;
1185                 os_memcpy(dst->eap_req_id_text, src->eap_req_id_text,
1186                           src->eap_req_id_text_len);
1187                 dst->eap_req_id_text_len = src->eap_req_id_text_len;
1188         } else {
1189                 dst->eap_req_id_text = NULL;
1190                 dst->eap_req_id_text_len = 0;
1191         }
1192         if (src->pac_opaque_encr_key) {
1193                 dst->pac_opaque_encr_key = os_malloc(16);
1194                 if (dst->pac_opaque_encr_key == NULL)
1195                         goto fail;
1196                 os_memcpy(dst->pac_opaque_encr_key, src->pac_opaque_encr_key,
1197                           16);
1198         } else
1199                 dst->pac_opaque_encr_key = NULL;
1200         if (src->eap_fast_a_id) {
1201                 dst->eap_fast_a_id = os_malloc(src->eap_fast_a_id_len);
1202                 if (dst->eap_fast_a_id == NULL)
1203                         goto fail;
1204                 os_memcpy(dst->eap_fast_a_id, src->eap_fast_a_id,
1205                           src->eap_fast_a_id_len);
1206                 dst->eap_fast_a_id_len = src->eap_fast_a_id_len;
1207         } else
1208                 dst->eap_fast_a_id = NULL;
1209         if (src->eap_fast_a_id_info) {
1210                 dst->eap_fast_a_id_info = os_strdup(src->eap_fast_a_id_info);
1211                 if (dst->eap_fast_a_id_info == NULL)
1212                         goto fail;
1213         } else
1214                 dst->eap_fast_a_id_info = NULL;
1215         dst->eap_fast_prov = src->eap_fast_prov;
1216         dst->pac_key_lifetime = src->pac_key_lifetime;
1217         dst->pac_key_refresh_time = src->pac_key_refresh_time;
1218         dst->eap_sim_aka_result_ind = src->eap_sim_aka_result_ind;
1219         dst->tnc = src->tnc;
1220         dst->wps = src->wps;
1221         dst->fragment_size = src->fragment_size;
1222
1223         os_free(dst->erp_domain);
1224         if (src->erp_domain) {
1225                 dst->erp_domain = os_strdup(src->erp_domain);
1226                 if (dst->erp_domain == NULL)
1227                         goto fail;
1228         } else {
1229                 dst->erp_domain = NULL;
1230         }
1231         dst->erp_send_reauth_start = src->erp_send_reauth_start;
1232         dst->erp = src->erp;
1233         dst->tls_session_lifetime = src->tls_session_lifetime;
1234
1235         return 0;
1236
1237 fail:
1238         eapol_auth_conf_free(dst);
1239         return -1;
1240 }
1241
1242
1243 static void eapol_auth_conf_free(struct eapol_auth_config *conf)
1244 {
1245         os_free(conf->eap_req_id_text);
1246         conf->eap_req_id_text = NULL;
1247         os_free(conf->pac_opaque_encr_key);
1248         conf->pac_opaque_encr_key = NULL;
1249         os_free(conf->eap_fast_a_id);
1250         conf->eap_fast_a_id = NULL;
1251         os_free(conf->eap_fast_a_id_info);
1252         conf->eap_fast_a_id_info = NULL;
1253         os_free(conf->erp_domain);
1254         conf->erp_domain = NULL;
1255 }
1256
1257
1258 struct eapol_authenticator * eapol_auth_init(struct eapol_auth_config *conf,
1259                                              struct eapol_auth_cb *cb)
1260 {
1261         struct eapol_authenticator *eapol;
1262         struct os_time now;
1263
1264         eapol = os_zalloc(sizeof(*eapol));
1265         if (eapol == NULL)
1266                 return NULL;
1267
1268         if (eapol_auth_conf_clone(&eapol->conf, conf) < 0) {
1269                 os_free(eapol);
1270                 return NULL;
1271         }
1272
1273         if (conf->individual_wep_key_len > 0) {
1274                 /* use key0 in individual key and key1 in broadcast key */
1275                 eapol->default_wep_key_idx = 1;
1276         }
1277
1278         eapol->cb.eapol_send = cb->eapol_send;
1279         eapol->cb.aaa_send = cb->aaa_send;
1280         eapol->cb.finished = cb->finished;
1281         eapol->cb.get_eap_user = cb->get_eap_user;
1282         eapol->cb.sta_entry_alive = cb->sta_entry_alive;
1283         eapol->cb.logger = cb->logger;
1284         eapol->cb.set_port_authorized = cb->set_port_authorized;
1285         eapol->cb.abort_auth = cb->abort_auth;
1286         eapol->cb.tx_key = cb->tx_key;
1287         eapol->cb.eapol_event = cb->eapol_event;
1288         eapol->cb.erp_get_key = cb->erp_get_key;
1289         eapol->cb.erp_add_key = cb->erp_add_key;
1290
1291         /* Acct-Multi-Session-Id should be unique over reboots. If reliable
1292          * clock is not available, this could be replaced with reboot counter,
1293          * etc. */
1294         os_get_time(&now);
1295         eapol->acct_multi_session_id_hi = now.sec;
1296
1297         return eapol;
1298 }
1299
1300
1301 void eapol_auth_deinit(struct eapol_authenticator *eapol)
1302 {
1303         if (eapol == NULL)
1304                 return;
1305
1306         eapol_auth_conf_free(&eapol->conf);
1307         os_free(eapol->default_wep_key);
1308         os_free(eapol);
1309 }