1 /* 2 * hostapd / IEEE 802.11 Management 3 * Copyright (c) 2002-2010, Jouni Malinen <j@w1.fi> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 * 9 * Alternatively, this software may be distributed under the terms of BSD 10 * license. 11 * 12 * See README and COPYING for more details. 13 */ 14 15 #include "utils/includes.h" 16 17 #ifndef CONFIG_NATIVE_WINDOWS 18 19 #include "utils/common.h" 20 #include "utils/eloop.h" 21 #include "crypto/crypto.h" 22 #include "drivers/driver.h" 23 #include "common/ieee802_11_defs.h" 24 #include "common/ieee802_11_common.h" 25 #include "common/wpa_ctrl.h" 26 #include "radius/radius.h" 27 #include "radius/radius_client.h" 28 #include "wps/wps.h" 29 #include "hostapd.h" 30 #include "beacon.h" 31 #include "ieee802_11_auth.h" 32 #include "sta_info.h" 33 #include "ieee802_1x.h" 34 #include "wpa_auth.h" 35 #include "wmm.h" 36 #include "ap_list.h" 37 #include "accounting.h" 38 #include "ap_config.h" 39 #include "ap_mlme.h" 40 #include "ieee802_11.h" 41 42 43 u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid) 44 { 45 u8 *pos = eid; 46 int i, num, count; 47 48 if (hapd->iface->current_rates == NULL) 49 return eid; 50 51 *pos++ = WLAN_EID_SUPP_RATES; 52 num = hapd->iface->num_rates; 53 if (num > 8) { 54 /* rest of the rates are encoded in Extended supported 55 * rates element */ 56 num = 8; 57 } 58 59 *pos++ = num; 60 count = 0; 61 for (i = 0, count = 0; i < hapd->iface->num_rates && count < num; 62 i++) { 63 count++; 64 *pos = hapd->iface->current_rates[i].rate / 5; 65 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC) 66 *pos |= 0x80; 67 pos++; 68 } 69 70 return pos; 71 } 72 73 74 u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid) 75 { 76 u8 *pos = eid; 77 int i, num, count; 78 79 if (hapd->iface->current_rates == NULL) 80 return eid; 81 82 num = hapd->iface->num_rates; 83 if (num <= 8) 84 return eid; 85 num -= 8; 86 87 *pos++ = WLAN_EID_EXT_SUPP_RATES; 88 *pos++ = num; 89 count = 0; 90 for (i = 0, count = 0; i < hapd->iface->num_rates && count < num + 8; 91 i++) { 92 count++; 93 if (count <= 8) 94 continue; /* already in SuppRates IE */ 95 *pos = hapd->iface->current_rates[i].rate / 5; 96 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC) 97 *pos |= 0x80; 98 pos++; 99 } 100 101 return pos; 102 } 103 104 105 u16 hostapd_own_capab_info(struct hostapd_data *hapd, struct sta_info *sta, 106 int probe) 107 { 108 int capab = WLAN_CAPABILITY_ESS; 109 int privacy; 110 111 if (hapd->iface->num_sta_no_short_preamble == 0 && 112 hapd->iconf->preamble == SHORT_PREAMBLE) 113 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; 114 115 privacy = hapd->conf->ssid.wep.keys_set; 116 117 if (hapd->conf->ieee802_1x && 118 (hapd->conf->default_wep_key_len || 119 hapd->conf->individual_wep_key_len)) 120 privacy = 1; 121 122 if (hapd->conf->wpa) 123 privacy = 1; 124 125 if (sta) { 126 int policy, def_klen; 127 if (probe && sta->ssid_probe) { 128 policy = sta->ssid_probe->security_policy; 129 def_klen = sta->ssid_probe->wep.default_len; 130 } else { 131 policy = sta->ssid->security_policy; 132 def_klen = sta->ssid->wep.default_len; 133 } 134 privacy = policy != SECURITY_PLAINTEXT; 135 if (policy == SECURITY_IEEE_802_1X && def_klen == 0) 136 privacy = 0; 137 } 138 139 if (privacy) 140 capab |= WLAN_CAPABILITY_PRIVACY; 141 142 if (hapd->iface->current_mode && 143 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G && 144 hapd->iface->num_sta_no_short_slot_time == 0) 145 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; 146 147 return capab; 148 } 149 150 151 #ifdef CONFIG_IEEE80211W 152 static u8 * hostapd_eid_assoc_comeback_time(struct hostapd_data *hapd, 153 struct sta_info *sta, u8 *eid) 154 { 155 u8 *pos = eid; 156 u32 timeout, tu; 157 struct os_time now, passed; 158 159 *pos++ = WLAN_EID_TIMEOUT_INTERVAL; 160 *pos++ = 5; 161 *pos++ = WLAN_TIMEOUT_ASSOC_COMEBACK; 162 os_get_time(&now); 163 os_time_sub(&now, &sta->sa_query_start, &passed); 164 tu = (passed.sec * 1000000 + passed.usec) / 1024; 165 if (hapd->conf->assoc_sa_query_max_timeout > tu) 166 timeout = hapd->conf->assoc_sa_query_max_timeout - tu; 167 else 168 timeout = 0; 169 if (timeout < hapd->conf->assoc_sa_query_max_timeout) 170 timeout++; /* add some extra time for local timers */ 171 WPA_PUT_LE32(pos, timeout); 172 pos += 4; 173 174 return pos; 175 } 176 #endif /* CONFIG_IEEE80211W */ 177 178 179 void ieee802_11_print_ssid(char *buf, const u8 *ssid, u8 len) 180 { 181 int i; 182 if (len > HOSTAPD_MAX_SSID_LEN) 183 len = HOSTAPD_MAX_SSID_LEN; 184 for (i = 0; i < len; i++) { 185 if (ssid[i] >= 32 && ssid[i] < 127) 186 buf[i] = ssid[i]; 187 else 188 buf[i] = '.'; 189 } 190 buf[len] = '\0'; 191 } 192 193 194 static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta, 195 u16 auth_transaction, const u8 *challenge, 196 int iswep) 197 { 198 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 199 HOSTAPD_LEVEL_DEBUG, 200 "authentication (shared key, transaction %d)", 201 auth_transaction); 202 203 if (auth_transaction == 1) { 204 if (!sta->challenge) { 205 /* Generate a pseudo-random challenge */ 206 u8 key[8]; 207 time_t now; 208 int r; 209 sta->challenge = os_zalloc(WLAN_AUTH_CHALLENGE_LEN); 210 if (sta->challenge == NULL) 211 return WLAN_STATUS_UNSPECIFIED_FAILURE; 212 213 now = time(NULL); 214 r = random(); 215 os_memcpy(key, &now, 4); 216 os_memcpy(key + 4, &r, 4); 217 rc4_skip(key, sizeof(key), 0, 218 sta->challenge, WLAN_AUTH_CHALLENGE_LEN); 219 } 220 return 0; 221 } 222 223 if (auth_transaction != 3) 224 return WLAN_STATUS_UNSPECIFIED_FAILURE; 225 226 /* Transaction 3 */ 227 if (!iswep || !sta->challenge || !challenge || 228 os_memcmp(sta->challenge, challenge, WLAN_AUTH_CHALLENGE_LEN)) { 229 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 230 HOSTAPD_LEVEL_INFO, 231 "shared key authentication - invalid " 232 "challenge-response"); 233 return WLAN_STATUS_CHALLENGE_FAIL; 234 } 235 236 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 237 HOSTAPD_LEVEL_DEBUG, 238 "authentication OK (shared key)"); 239 #ifdef IEEE80211_REQUIRE_AUTH_ACK 240 /* Station will be marked authenticated if it ACKs the 241 * authentication reply. */ 242 #else 243 sta->flags |= WLAN_STA_AUTH; 244 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH); 245 #endif 246 os_free(sta->challenge); 247 sta->challenge = NULL; 248 249 return 0; 250 } 251 252 253 static void send_auth_reply(struct hostapd_data *hapd, 254 const u8 *dst, const u8 *bssid, 255 u16 auth_alg, u16 auth_transaction, u16 resp, 256 const u8 *ies, size_t ies_len) 257 { 258 struct ieee80211_mgmt *reply; 259 u8 *buf; 260 size_t rlen; 261 262 rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth) + ies_len; 263 buf = os_zalloc(rlen); 264 if (buf == NULL) 265 return; 266 267 reply = (struct ieee80211_mgmt *) buf; 268 reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 269 WLAN_FC_STYPE_AUTH); 270 os_memcpy(reply->da, dst, ETH_ALEN); 271 os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN); 272 os_memcpy(reply->bssid, bssid, ETH_ALEN); 273 274 reply->u.auth.auth_alg = host_to_le16(auth_alg); 275 reply->u.auth.auth_transaction = host_to_le16(auth_transaction); 276 reply->u.auth.status_code = host_to_le16(resp); 277 278 if (ies && ies_len) 279 os_memcpy(reply->u.auth.variable, ies, ies_len); 280 281 wpa_printf(MSG_DEBUG, "authentication reply: STA=" MACSTR 282 " auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu)", 283 MAC2STR(dst), auth_alg, auth_transaction, 284 resp, (unsigned long) ies_len); 285 if (hapd->drv.send_mgmt_frame(hapd, reply, rlen) < 0) 286 perror("send_auth_reply: send"); 287 288 os_free(buf); 289 } 290 291 292 #ifdef CONFIG_IEEE80211R 293 static void handle_auth_ft_finish(void *ctx, const u8 *dst, const u8 *bssid, 294 u16 auth_transaction, u16 status, 295 const u8 *ies, size_t ies_len) 296 { 297 struct hostapd_data *hapd = ctx; 298 struct sta_info *sta; 299 300 send_auth_reply(hapd, dst, bssid, WLAN_AUTH_FT, auth_transaction, 301 status, ies, ies_len); 302 303 if (status != WLAN_STATUS_SUCCESS) 304 return; 305 306 sta = ap_get_sta(hapd, dst); 307 if (sta == NULL) 308 return; 309 310 hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211, 311 HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)"); 312 sta->flags |= WLAN_STA_AUTH; 313 mlme_authenticate_indication(hapd, sta); 314 } 315 #endif /* CONFIG_IEEE80211R */ 316 317 318 static void handle_auth(struct hostapd_data *hapd, 319 const struct ieee80211_mgmt *mgmt, size_t len) 320 { 321 u16 auth_alg, auth_transaction, status_code; 322 u16 resp = WLAN_STATUS_SUCCESS; 323 struct sta_info *sta = NULL; 324 int res; 325 u16 fc; 326 const u8 *challenge = NULL; 327 u32 session_timeout, acct_interim_interval; 328 int vlan_id = 0; 329 u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN]; 330 size_t resp_ies_len = 0; 331 332 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) { 333 printf("handle_auth - too short payload (len=%lu)\n", 334 (unsigned long) len); 335 return; 336 } 337 338 auth_alg = le_to_host16(mgmt->u.auth.auth_alg); 339 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction); 340 status_code = le_to_host16(mgmt->u.auth.status_code); 341 fc = le_to_host16(mgmt->frame_control); 342 343 if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) + 344 2 + WLAN_AUTH_CHALLENGE_LEN && 345 mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE && 346 mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN) 347 challenge = &mgmt->u.auth.variable[2]; 348 349 wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d " 350 "auth_transaction=%d status_code=%d wep=%d%s", 351 MAC2STR(mgmt->sa), auth_alg, auth_transaction, 352 status_code, !!(fc & WLAN_FC_ISWEP), 353 challenge ? " challenge" : ""); 354 355 if (hapd->tkip_countermeasures) { 356 resp = WLAN_REASON_MICHAEL_MIC_FAILURE; 357 goto fail; 358 } 359 360 if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) && 361 auth_alg == WLAN_AUTH_OPEN) || 362 #ifdef CONFIG_IEEE80211R 363 (hapd->conf->wpa && 364 (hapd->conf->wpa_key_mgmt & 365 (WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_FT_PSK)) && 366 auth_alg == WLAN_AUTH_FT) || 367 #endif /* CONFIG_IEEE80211R */ 368 ((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) && 369 auth_alg == WLAN_AUTH_SHARED_KEY))) { 370 printf("Unsupported authentication algorithm (%d)\n", 371 auth_alg); 372 resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG; 373 goto fail; 374 } 375 376 if (!(auth_transaction == 1 || 377 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) { 378 printf("Unknown authentication transaction number (%d)\n", 379 auth_transaction); 380 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION; 381 goto fail; 382 } 383 384 if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) { 385 printf("Station " MACSTR " not allowed to authenticate.\n", 386 MAC2STR(mgmt->sa)); 387 resp = WLAN_STATUS_UNSPECIFIED_FAILURE; 388 goto fail; 389 } 390 391 res = hostapd_allowed_address(hapd, mgmt->sa, (u8 *) mgmt, len, 392 &session_timeout, 393 &acct_interim_interval, &vlan_id); 394 if (res == HOSTAPD_ACL_REJECT) { 395 printf("Station " MACSTR " not allowed to authenticate.\n", 396 MAC2STR(mgmt->sa)); 397 resp = WLAN_STATUS_UNSPECIFIED_FAILURE; 398 goto fail; 399 } 400 if (res == HOSTAPD_ACL_PENDING) { 401 wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR 402 " waiting for an external authentication", 403 MAC2STR(mgmt->sa)); 404 /* Authentication code will re-send the authentication frame 405 * after it has received (and cached) information from the 406 * external source. */ 407 return; 408 } 409 410 sta = ap_sta_add(hapd, mgmt->sa); 411 if (!sta) { 412 resp = WLAN_STATUS_UNSPECIFIED_FAILURE; 413 goto fail; 414 } 415 416 if (vlan_id > 0) { 417 if (hostapd_get_vlan_id_ifname(hapd->conf->vlan, 418 vlan_id) == NULL) { 419 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS, 420 HOSTAPD_LEVEL_INFO, "Invalid VLAN ID " 421 "%d received from RADIUS server", 422 vlan_id); 423 resp = WLAN_STATUS_UNSPECIFIED_FAILURE; 424 goto fail; 425 } 426 sta->vlan_id = vlan_id; 427 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS, 428 HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id); 429 } 430 431 sta->flags &= ~WLAN_STA_PREAUTH; 432 ieee802_1x_notify_pre_auth(sta->eapol_sm, 0); 433 434 if (hapd->conf->acct_interim_interval == 0 && acct_interim_interval) 435 sta->acct_interim_interval = acct_interim_interval; 436 if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT) 437 ap_sta_session_timeout(hapd, sta, session_timeout); 438 else 439 ap_sta_no_session_timeout(hapd, sta); 440 441 switch (auth_alg) { 442 case WLAN_AUTH_OPEN: 443 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 444 HOSTAPD_LEVEL_DEBUG, 445 "authentication OK (open system)"); 446 #ifdef IEEE80211_REQUIRE_AUTH_ACK 447 /* Station will be marked authenticated if it ACKs the 448 * authentication reply. */ 449 #else 450 sta->flags |= WLAN_STA_AUTH; 451 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH); 452 sta->auth_alg = WLAN_AUTH_OPEN; 453 mlme_authenticate_indication(hapd, sta); 454 #endif 455 break; 456 case WLAN_AUTH_SHARED_KEY: 457 resp = auth_shared_key(hapd, sta, auth_transaction, challenge, 458 fc & WLAN_FC_ISWEP); 459 sta->auth_alg = WLAN_AUTH_SHARED_KEY; 460 mlme_authenticate_indication(hapd, sta); 461 if (sta->challenge && auth_transaction == 1) { 462 resp_ies[0] = WLAN_EID_CHALLENGE; 463 resp_ies[1] = WLAN_AUTH_CHALLENGE_LEN; 464 os_memcpy(resp_ies + 2, sta->challenge, 465 WLAN_AUTH_CHALLENGE_LEN); 466 resp_ies_len = 2 + WLAN_AUTH_CHALLENGE_LEN; 467 } 468 break; 469 #ifdef CONFIG_IEEE80211R 470 case WLAN_AUTH_FT: 471 sta->auth_alg = WLAN_AUTH_FT; 472 if (sta->wpa_sm == NULL) 473 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, 474 sta->addr); 475 if (sta->wpa_sm == NULL) { 476 wpa_printf(MSG_DEBUG, "FT: Failed to initialize WPA " 477 "state machine"); 478 resp = WLAN_STATUS_UNSPECIFIED_FAILURE; 479 goto fail; 480 } 481 wpa_ft_process_auth(sta->wpa_sm, mgmt->bssid, 482 auth_transaction, mgmt->u.auth.variable, 483 len - IEEE80211_HDRLEN - 484 sizeof(mgmt->u.auth), 485 handle_auth_ft_finish, hapd); 486 /* handle_auth_ft_finish() callback will complete auth. */ 487 return; 488 #endif /* CONFIG_IEEE80211R */ 489 } 490 491 fail: 492 send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg, 493 auth_transaction + 1, resp, resp_ies, resp_ies_len); 494 } 495 496 497 static int hostapd_get_aid(struct hostapd_data *hapd, struct sta_info *sta) 498 { 499 int i, j = 32, aid; 500 501 /* get a unique AID */ 502 if (sta->aid > 0) { 503 wpa_printf(MSG_DEBUG, " old AID %d", sta->aid); 504 return 0; 505 } 506 507 for (i = 0; i < AID_WORDS; i++) { 508 if (hapd->sta_aid[i] == (u32) -1) 509 continue; 510 for (j = 0; j < 32; j++) { 511 if (!(hapd->sta_aid[i] & BIT(j))) 512 break; 513 } 514 if (j < 32) 515 break; 516 } 517 if (j == 32) 518 return -1; 519 aid = i * 32 + j + 1; 520 if (aid > 2007) 521 return -1; 522 523 sta->aid = aid; 524 hapd->sta_aid[i] |= BIT(j); 525 wpa_printf(MSG_DEBUG, " new AID %d", sta->aid); 526 return 0; 527 } 528 529 530 static u16 check_ssid(struct hostapd_data *hapd, struct sta_info *sta, 531 const u8 *ssid_ie, size_t ssid_ie_len) 532 { 533 if (ssid_ie == NULL) 534 return WLAN_STATUS_UNSPECIFIED_FAILURE; 535 536 if (ssid_ie_len != hapd->conf->ssid.ssid_len || 537 os_memcmp(ssid_ie, hapd->conf->ssid.ssid, ssid_ie_len) != 0) { 538 char ssid_txt[33]; 539 ieee802_11_print_ssid(ssid_txt, ssid_ie, ssid_ie_len); 540 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 541 HOSTAPD_LEVEL_INFO, 542 "Station tried to associate with unknown SSID " 543 "'%s'", ssid_txt); 544 return WLAN_STATUS_UNSPECIFIED_FAILURE; 545 } 546 547 return WLAN_STATUS_SUCCESS; 548 } 549 550 551 static u16 check_wmm(struct hostapd_data *hapd, struct sta_info *sta, 552 const u8 *wmm_ie, size_t wmm_ie_len) 553 { 554 sta->flags &= ~WLAN_STA_WMM; 555 if (wmm_ie && hapd->conf->wmm_enabled) { 556 if (hostapd_eid_wmm_valid(hapd, wmm_ie, wmm_ie_len)) 557 hostapd_logger(hapd, sta->addr, 558 HOSTAPD_MODULE_WPA, 559 HOSTAPD_LEVEL_DEBUG, 560 "invalid WMM element in association " 561 "request"); 562 else 563 sta->flags |= WLAN_STA_WMM; 564 } 565 return WLAN_STATUS_SUCCESS; 566 } 567 568 569 static u16 copy_supp_rates(struct hostapd_data *hapd, struct sta_info *sta, 570 struct ieee802_11_elems *elems) 571 { 572 if (!elems->supp_rates) { 573 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 574 HOSTAPD_LEVEL_DEBUG, 575 "No supported rates element in AssocReq"); 576 return WLAN_STATUS_UNSPECIFIED_FAILURE; 577 } 578 579 if (elems->supp_rates_len > sizeof(sta->supported_rates)) { 580 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 581 HOSTAPD_LEVEL_DEBUG, 582 "Invalid supported rates element length %d", 583 elems->supp_rates_len); 584 return WLAN_STATUS_UNSPECIFIED_FAILURE; 585 } 586 587 os_memset(sta->supported_rates, 0, sizeof(sta->supported_rates)); 588 os_memcpy(sta->supported_rates, elems->supp_rates, 589 elems->supp_rates_len); 590 sta->supported_rates_len = elems->supp_rates_len; 591 592 if (elems->ext_supp_rates) { 593 if (elems->supp_rates_len + elems->ext_supp_rates_len > 594 sizeof(sta->supported_rates)) { 595 hostapd_logger(hapd, sta->addr, 596 HOSTAPD_MODULE_IEEE80211, 597 HOSTAPD_LEVEL_DEBUG, 598 "Invalid supported rates element length" 599 " %d+%d", elems->supp_rates_len, 600 elems->ext_supp_rates_len); 601 return WLAN_STATUS_UNSPECIFIED_FAILURE; 602 } 603 604 os_memcpy(sta->supported_rates + elems->supp_rates_len, 605 elems->ext_supp_rates, elems->ext_supp_rates_len); 606 sta->supported_rates_len += elems->ext_supp_rates_len; 607 } 608 609 return WLAN_STATUS_SUCCESS; 610 } 611 612 613 static u16 check_assoc_ies(struct hostapd_data *hapd, struct sta_info *sta, 614 const u8 *ies, size_t ies_len, int reassoc) 615 { 616 struct ieee802_11_elems elems; 617 u16 resp; 618 const u8 *wpa_ie; 619 size_t wpa_ie_len; 620 621 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) { 622 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 623 HOSTAPD_LEVEL_INFO, "Station sent an invalid " 624 "association request"); 625 return WLAN_STATUS_UNSPECIFIED_FAILURE; 626 } 627 628 resp = check_ssid(hapd, sta, elems.ssid, elems.ssid_len); 629 if (resp != WLAN_STATUS_SUCCESS) 630 return resp; 631 resp = check_wmm(hapd, sta, elems.wmm, elems.wmm_len); 632 if (resp != WLAN_STATUS_SUCCESS) 633 return resp; 634 resp = copy_supp_rates(hapd, sta, &elems); 635 if (resp != WLAN_STATUS_SUCCESS) 636 return resp; 637 #ifdef CONFIG_IEEE80211N 638 resp = copy_sta_ht_capab(sta, elems.ht_capabilities, 639 elems.ht_capabilities_len); 640 if (resp != WLAN_STATUS_SUCCESS) 641 return resp; 642 #endif /* CONFIG_IEEE80211N */ 643 644 if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) { 645 wpa_ie = elems.rsn_ie; 646 wpa_ie_len = elems.rsn_ie_len; 647 } else if ((hapd->conf->wpa & WPA_PROTO_WPA) && 648 elems.wpa_ie) { 649 wpa_ie = elems.wpa_ie; 650 wpa_ie_len = elems.wpa_ie_len; 651 } else { 652 wpa_ie = NULL; 653 wpa_ie_len = 0; 654 } 655 656 #ifdef CONFIG_WPS 657 sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS); 658 if (hapd->conf->wps_state && elems.wps_ie) { 659 wpa_printf(MSG_DEBUG, "STA included WPS IE in (Re)Association " 660 "Request - assume WPS is used"); 661 sta->flags |= WLAN_STA_WPS; 662 wpabuf_free(sta->wps_ie); 663 sta->wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, 664 WPS_IE_VENDOR_TYPE); 665 wpa_ie = NULL; 666 wpa_ie_len = 0; 667 } else if (hapd->conf->wps_state && wpa_ie == NULL) { 668 wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE in " 669 "(Re)Association Request - possible WPS use"); 670 sta->flags |= WLAN_STA_MAYBE_WPS; 671 } else 672 #endif /* CONFIG_WPS */ 673 if (hapd->conf->wpa && wpa_ie == NULL) { 674 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 675 HOSTAPD_LEVEL_INFO, 676 "No WPA/RSN IE in association request"); 677 return WLAN_STATUS_INVALID_IE; 678 } 679 680 if (hapd->conf->wpa && wpa_ie) { 681 int res; 682 wpa_ie -= 2; 683 wpa_ie_len += 2; 684 if (sta->wpa_sm == NULL) 685 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, 686 sta->addr); 687 if (sta->wpa_sm == NULL) { 688 wpa_printf(MSG_WARNING, "Failed to initialize WPA " 689 "state machine"); 690 return WLAN_STATUS_UNSPECIFIED_FAILURE; 691 } 692 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm, 693 wpa_ie, wpa_ie_len, 694 elems.mdie, elems.mdie_len); 695 if (res == WPA_INVALID_GROUP) 696 resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID; 697 else if (res == WPA_INVALID_PAIRWISE) 698 resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID; 699 else if (res == WPA_INVALID_AKMP) 700 resp = WLAN_STATUS_AKMP_NOT_VALID; 701 else if (res == WPA_ALLOC_FAIL) 702 resp = WLAN_STATUS_UNSPECIFIED_FAILURE; 703 #ifdef CONFIG_IEEE80211W 704 else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION) 705 resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION; 706 else if (res == WPA_INVALID_MGMT_GROUP_CIPHER) 707 resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION; 708 #endif /* CONFIG_IEEE80211W */ 709 else if (res == WPA_INVALID_MDIE) 710 resp = WLAN_STATUS_INVALID_MDIE; 711 else if (res != WPA_IE_OK) 712 resp = WLAN_STATUS_INVALID_IE; 713 if (resp != WLAN_STATUS_SUCCESS) 714 return resp; 715 #ifdef CONFIG_IEEE80211W 716 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out && 717 sta->sa_query_count > 0) 718 ap_check_sa_query_timeout(hapd, sta); 719 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out && 720 (!reassoc || sta->auth_alg != WLAN_AUTH_FT)) { 721 /* 722 * STA has already been associated with MFP and SA 723 * Query timeout has not been reached. Reject the 724 * association attempt temporarily and start SA Query, 725 * if one is not pending. 726 */ 727 728 if (sta->sa_query_count == 0) 729 ap_sta_start_sa_query(hapd, sta); 730 731 return WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY; 732 } 733 734 if (wpa_auth_uses_mfp(sta->wpa_sm)) 735 sta->flags |= WLAN_STA_MFP; 736 else 737 sta->flags &= ~WLAN_STA_MFP; 738 #endif /* CONFIG_IEEE80211W */ 739 740 #ifdef CONFIG_IEEE80211R 741 if (sta->auth_alg == WLAN_AUTH_FT) { 742 if (!reassoc) { 743 wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried " 744 "to use association (not " 745 "re-association) with FT auth_alg", 746 MAC2STR(sta->addr)); 747 return WLAN_STATUS_UNSPECIFIED_FAILURE; 748 } 749 750 resp = wpa_ft_validate_reassoc(sta->wpa_sm, ies, 751 ies_len); 752 if (resp != WLAN_STATUS_SUCCESS) 753 return resp; 754 } 755 #endif /* CONFIG_IEEE80211R */ 756 757 #ifdef CONFIG_IEEE80211N 758 if ((sta->flags & WLAN_STA_HT) && 759 wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) { 760 hostapd_logger(hapd, sta->addr, 761 HOSTAPD_MODULE_IEEE80211, 762 HOSTAPD_LEVEL_INFO, 763 "Station tried to use TKIP with HT " 764 "association"); 765 return WLAN_STATUS_CIPHER_REJECTED_PER_POLICY; 766 } 767 #endif /* CONFIG_IEEE80211N */ 768 } else 769 wpa_auth_sta_no_wpa(sta->wpa_sm); 770 771 return WLAN_STATUS_SUCCESS; 772 } 773 774 775 static void send_deauth(struct hostapd_data *hapd, const u8 *addr, 776 u16 reason_code) 777 { 778 int send_len; 779 struct ieee80211_mgmt reply; 780 781 os_memset(&reply, 0, sizeof(reply)); 782 reply.frame_control = 783 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_DEAUTH); 784 os_memcpy(reply.da, addr, ETH_ALEN); 785 os_memcpy(reply.sa, hapd->own_addr, ETH_ALEN); 786 os_memcpy(reply.bssid, hapd->own_addr, ETH_ALEN); 787 788 send_len = IEEE80211_HDRLEN + sizeof(reply.u.deauth); 789 reply.u.deauth.reason_code = host_to_le16(reason_code); 790 791 if (hapd->drv.send_mgmt_frame(hapd, &reply, send_len) < 0) 792 wpa_printf(MSG_INFO, "Failed to send deauth: %s", 793 strerror(errno)); 794 } 795 796 797 static void send_assoc_resp(struct hostapd_data *hapd, struct sta_info *sta, 798 u16 status_code, int reassoc, const u8 *ies, 799 size_t ies_len) 800 { 801 int send_len; 802 u8 buf[sizeof(struct ieee80211_mgmt) + 1024]; 803 struct ieee80211_mgmt *reply; 804 u8 *p; 805 806 os_memset(buf, 0, sizeof(buf)); 807 reply = (struct ieee80211_mgmt *) buf; 808 reply->frame_control = 809 IEEE80211_FC(WLAN_FC_TYPE_MGMT, 810 (reassoc ? WLAN_FC_STYPE_REASSOC_RESP : 811 WLAN_FC_STYPE_ASSOC_RESP)); 812 os_memcpy(reply->da, sta->addr, ETH_ALEN); 813 os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN); 814 os_memcpy(reply->bssid, hapd->own_addr, ETH_ALEN); 815 816 send_len = IEEE80211_HDRLEN; 817 send_len += sizeof(reply->u.assoc_resp); 818 reply->u.assoc_resp.capab_info = 819 host_to_le16(hostapd_own_capab_info(hapd, sta, 0)); 820 reply->u.assoc_resp.status_code = host_to_le16(status_code); 821 reply->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0) 822 | BIT(14) | BIT(15)); 823 /* Supported rates */ 824 p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable); 825 /* Extended supported rates */ 826 p = hostapd_eid_ext_supp_rates(hapd, p); 827 828 #ifdef CONFIG_IEEE80211R 829 if (status_code == WLAN_STATUS_SUCCESS) { 830 /* IEEE 802.11r: Mobility Domain Information, Fast BSS 831 * Transition Information, RSN, [RIC Response] */ 832 p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p, 833 buf + sizeof(buf) - p, 834 sta->auth_alg, ies, ies_len); 835 } 836 #endif /* CONFIG_IEEE80211R */ 837 838 #ifdef CONFIG_IEEE80211W 839 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY) 840 p = hostapd_eid_assoc_comeback_time(hapd, sta, p); 841 #endif /* CONFIG_IEEE80211W */ 842 843 #ifdef CONFIG_IEEE80211N 844 p = hostapd_eid_ht_capabilities(hapd, p); 845 p = hostapd_eid_ht_operation(hapd, p); 846 #endif /* CONFIG_IEEE80211N */ 847 848 if (sta->flags & WLAN_STA_WMM) 849 p = hostapd_eid_wmm(hapd, p); 850 851 #ifdef CONFIG_WPS 852 if (sta->flags & WLAN_STA_WPS) { 853 struct wpabuf *wps = wps_build_assoc_resp_ie(); 854 if (wps) { 855 os_memcpy(p, wpabuf_head(wps), wpabuf_len(wps)); 856 p += wpabuf_len(wps); 857 wpabuf_free(wps); 858 } 859 } 860 #endif /* CONFIG_WPS */ 861 862 send_len += p - reply->u.assoc_resp.variable; 863 864 if (hapd->drv.send_mgmt_frame(hapd, reply, send_len) < 0) 865 wpa_printf(MSG_INFO, "Failed to send assoc resp: %s", 866 strerror(errno)); 867 } 868 869 870 static void handle_assoc(struct hostapd_data *hapd, 871 const struct ieee80211_mgmt *mgmt, size_t len, 872 int reassoc) 873 { 874 u16 capab_info, listen_interval; 875 u16 resp = WLAN_STATUS_SUCCESS; 876 const u8 *pos; 877 int left, i; 878 struct sta_info *sta; 879 880 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) : 881 sizeof(mgmt->u.assoc_req))) { 882 printf("handle_assoc(reassoc=%d) - too short payload (len=%lu)" 883 "\n", reassoc, (unsigned long) len); 884 return; 885 } 886 887 if (reassoc) { 888 capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info); 889 listen_interval = le_to_host16( 890 mgmt->u.reassoc_req.listen_interval); 891 wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR 892 " capab_info=0x%02x listen_interval=%d current_ap=" 893 MACSTR, 894 MAC2STR(mgmt->sa), capab_info, listen_interval, 895 MAC2STR(mgmt->u.reassoc_req.current_ap)); 896 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req)); 897 pos = mgmt->u.reassoc_req.variable; 898 } else { 899 capab_info = le_to_host16(mgmt->u.assoc_req.capab_info); 900 listen_interval = le_to_host16( 901 mgmt->u.assoc_req.listen_interval); 902 wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR 903 " capab_info=0x%02x listen_interval=%d", 904 MAC2STR(mgmt->sa), capab_info, listen_interval); 905 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req)); 906 pos = mgmt->u.assoc_req.variable; 907 } 908 909 sta = ap_get_sta(hapd, mgmt->sa); 910 #ifdef CONFIG_IEEE80211R 911 if (sta && sta->auth_alg == WLAN_AUTH_FT && 912 (sta->flags & WLAN_STA_AUTH) == 0) { 913 wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate " 914 "prior to authentication since it is using " 915 "over-the-DS FT", MAC2STR(mgmt->sa)); 916 } else 917 #endif /* CONFIG_IEEE80211R */ 918 if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) { 919 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, 920 HOSTAPD_LEVEL_INFO, "Station tried to " 921 "associate before authentication " 922 "(aid=%d flags=0x%x)", 923 sta ? sta->aid : -1, 924 sta ? sta->flags : 0); 925 send_deauth(hapd, mgmt->sa, 926 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA); 927 return; 928 } 929 930 if (hapd->tkip_countermeasures) { 931 resp = WLAN_REASON_MICHAEL_MIC_FAILURE; 932 goto fail; 933 } 934 935 if (listen_interval > hapd->conf->max_listen_interval) { 936 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, 937 HOSTAPD_LEVEL_DEBUG, 938 "Too large Listen Interval (%d)", 939 listen_interval); 940 resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE; 941 goto fail; 942 } 943 944 /* followed by SSID and Supported rates; and HT capabilities if 802.11n 945 * is used */ 946 resp = check_assoc_ies(hapd, sta, pos, left, reassoc); 947 if (resp != WLAN_STATUS_SUCCESS) 948 goto fail; 949 950 if (hostapd_get_aid(hapd, sta) < 0) { 951 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, 952 HOSTAPD_LEVEL_INFO, "No room for more AIDs"); 953 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA; 954 goto fail; 955 } 956 957 sta->capability = capab_info; 958 sta->listen_interval = listen_interval; 959 960 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G) 961 sta->flags |= WLAN_STA_NONERP; 962 for (i = 0; i < sta->supported_rates_len; i++) { 963 if ((sta->supported_rates[i] & 0x7f) > 22) { 964 sta->flags &= ~WLAN_STA_NONERP; 965 break; 966 } 967 } 968 if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) { 969 sta->nonerp_set = 1; 970 hapd->iface->num_sta_non_erp++; 971 if (hapd->iface->num_sta_non_erp == 1) 972 ieee802_11_set_beacons(hapd->iface); 973 } 974 975 if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) && 976 !sta->no_short_slot_time_set) { 977 sta->no_short_slot_time_set = 1; 978 hapd->iface->num_sta_no_short_slot_time++; 979 if (hapd->iface->current_mode->mode == 980 HOSTAPD_MODE_IEEE80211G && 981 hapd->iface->num_sta_no_short_slot_time == 1) 982 ieee802_11_set_beacons(hapd->iface); 983 } 984 985 if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) 986 sta->flags |= WLAN_STA_SHORT_PREAMBLE; 987 else 988 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE; 989 990 if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) && 991 !sta->no_short_preamble_set) { 992 sta->no_short_preamble_set = 1; 993 hapd->iface->num_sta_no_short_preamble++; 994 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G 995 && hapd->iface->num_sta_no_short_preamble == 1) 996 ieee802_11_set_beacons(hapd->iface); 997 } 998 999 #ifdef CONFIG_IEEE80211N 1000 update_ht_state(hapd, sta); 1001 #endif /* CONFIG_IEEE80211N */ 1002 1003 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 1004 HOSTAPD_LEVEL_DEBUG, 1005 "association OK (aid %d)", sta->aid); 1006 /* Station will be marked associated, after it acknowledges AssocResp 1007 */ 1008 1009 #ifdef CONFIG_IEEE80211W 1010 if ((sta->flags & WLAN_STA_MFP) && sta->sa_query_timed_out) { 1011 wpa_printf(MSG_DEBUG, "Allowing %sassociation after timed out " 1012 "SA Query procedure", reassoc ? "re" : ""); 1013 /* TODO: Send a protected Disassociate frame to the STA using 1014 * the old key and Reason Code "Previous Authentication no 1015 * longer valid". Make sure this is only sent protected since 1016 * unprotected frame would be received by the STA that is now 1017 * trying to associate. 1018 */ 1019 } 1020 #endif /* CONFIG_IEEE80211W */ 1021 1022 if (reassoc) { 1023 os_memcpy(sta->previous_ap, mgmt->u.reassoc_req.current_ap, 1024 ETH_ALEN); 1025 } 1026 1027 if (sta->last_assoc_req) 1028 os_free(sta->last_assoc_req); 1029 sta->last_assoc_req = os_malloc(len); 1030 if (sta->last_assoc_req) 1031 os_memcpy(sta->last_assoc_req, mgmt, len); 1032 1033 /* Make sure that the previously registered inactivity timer will not 1034 * remove the STA immediately. */ 1035 sta->timeout_next = STA_NULLFUNC; 1036 1037 fail: 1038 send_assoc_resp(hapd, sta, resp, reassoc, pos, left); 1039 } 1040 1041 1042 static void handle_disassoc(struct hostapd_data *hapd, 1043 const struct ieee80211_mgmt *mgmt, size_t len) 1044 { 1045 struct sta_info *sta; 1046 1047 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) { 1048 printf("handle_disassoc - too short payload (len=%lu)\n", 1049 (unsigned long) len); 1050 return; 1051 } 1052 1053 wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d", 1054 MAC2STR(mgmt->sa), 1055 le_to_host16(mgmt->u.disassoc.reason_code)); 1056 1057 sta = ap_get_sta(hapd, mgmt->sa); 1058 if (sta == NULL) { 1059 printf("Station " MACSTR " trying to disassociate, but it " 1060 "is not associated.\n", MAC2STR(mgmt->sa)); 1061 return; 1062 } 1063 1064 sta->flags &= ~WLAN_STA_ASSOC; 1065 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED MACSTR, 1066 MAC2STR(sta->addr)); 1067 wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC); 1068 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 1069 HOSTAPD_LEVEL_INFO, "disassociated"); 1070 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST; 1071 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0); 1072 /* Stop Accounting and IEEE 802.1X sessions, but leave the STA 1073 * authenticated. */ 1074 accounting_sta_stop(hapd, sta); 1075 ieee802_1x_free_station(sta); 1076 hapd->drv.sta_remove(hapd, sta->addr); 1077 1078 if (sta->timeout_next == STA_NULLFUNC || 1079 sta->timeout_next == STA_DISASSOC) { 1080 sta->timeout_next = STA_DEAUTH; 1081 eloop_cancel_timeout(ap_handle_timer, hapd, sta); 1082 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer, 1083 hapd, sta); 1084 } 1085 1086 mlme_disassociate_indication( 1087 hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code)); 1088 } 1089 1090 1091 static void handle_deauth(struct hostapd_data *hapd, 1092 const struct ieee80211_mgmt *mgmt, size_t len) 1093 { 1094 struct sta_info *sta; 1095 1096 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) { 1097 printf("handle_deauth - too short payload (len=%lu)\n", 1098 (unsigned long) len); 1099 return; 1100 } 1101 1102 wpa_printf(MSG_DEBUG, "deauthentication: STA=" MACSTR 1103 " reason_code=%d", 1104 MAC2STR(mgmt->sa), 1105 le_to_host16(mgmt->u.deauth.reason_code)); 1106 1107 sta = ap_get_sta(hapd, mgmt->sa); 1108 if (sta == NULL) { 1109 printf("Station " MACSTR " trying to deauthenticate, but it " 1110 "is not authenticated.\n", MAC2STR(mgmt->sa)); 1111 return; 1112 } 1113 1114 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC); 1115 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED MACSTR, 1116 MAC2STR(sta->addr)); 1117 wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH); 1118 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 1119 HOSTAPD_LEVEL_DEBUG, "deauthenticated"); 1120 mlme_deauthenticate_indication( 1121 hapd, sta, le_to_host16(mgmt->u.deauth.reason_code)); 1122 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST; 1123 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0); 1124 ap_free_sta(hapd, sta); 1125 } 1126 1127 1128 static void handle_beacon(struct hostapd_data *hapd, 1129 const struct ieee80211_mgmt *mgmt, size_t len, 1130 struct hostapd_frame_info *fi) 1131 { 1132 struct ieee802_11_elems elems; 1133 1134 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) { 1135 printf("handle_beacon - too short payload (len=%lu)\n", 1136 (unsigned long) len); 1137 return; 1138 } 1139 1140 (void) ieee802_11_parse_elems(mgmt->u.beacon.variable, 1141 len - (IEEE80211_HDRLEN + 1142 sizeof(mgmt->u.beacon)), &elems, 1143 0); 1144 1145 ap_list_process_beacon(hapd->iface, mgmt, &elems, fi); 1146 } 1147 1148 1149 #ifdef CONFIG_IEEE80211W 1150 1151 /* MLME-SAQuery.request */ 1152 void ieee802_11_send_sa_query_req(struct hostapd_data *hapd, 1153 const u8 *addr, const u8 *trans_id) 1154 { 1155 struct ieee80211_mgmt mgmt; 1156 u8 *end; 1157 1158 wpa_printf(MSG_DEBUG, "IEEE 802.11: Sending SA Query Request to " 1159 MACSTR, MAC2STR(addr)); 1160 wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID", 1161 trans_id, WLAN_SA_QUERY_TR_ID_LEN); 1162 1163 os_memset(&mgmt, 0, sizeof(mgmt)); 1164 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 1165 WLAN_FC_STYPE_ACTION); 1166 os_memcpy(mgmt.da, addr, ETH_ALEN); 1167 os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN); 1168 os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN); 1169 mgmt.u.action.category = WLAN_ACTION_SA_QUERY; 1170 mgmt.u.action.u.sa_query_req.action = WLAN_SA_QUERY_REQUEST; 1171 os_memcpy(mgmt.u.action.u.sa_query_req.trans_id, trans_id, 1172 WLAN_SA_QUERY_TR_ID_LEN); 1173 end = mgmt.u.action.u.sa_query_req.trans_id + WLAN_SA_QUERY_TR_ID_LEN; 1174 if (hapd->drv.send_mgmt_frame(hapd, &mgmt, end - (u8 *) &mgmt) < 0) 1175 perror("ieee802_11_send_sa_query_req: send"); 1176 } 1177 1178 1179 static void hostapd_sa_query_request(struct hostapd_data *hapd, 1180 const struct ieee80211_mgmt *mgmt) 1181 { 1182 struct sta_info *sta; 1183 struct ieee80211_mgmt resp; 1184 u8 *end; 1185 1186 wpa_printf(MSG_DEBUG, "IEEE 802.11: Received SA Query Request from " 1187 MACSTR, MAC2STR(mgmt->sa)); 1188 wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID", 1189 mgmt->u.action.u.sa_query_resp.trans_id, 1190 WLAN_SA_QUERY_TR_ID_LEN); 1191 1192 sta = ap_get_sta(hapd, mgmt->sa); 1193 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) { 1194 wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignore SA Query Request " 1195 "from unassociated STA " MACSTR, MAC2STR(mgmt->sa)); 1196 return; 1197 } 1198 1199 wpa_printf(MSG_DEBUG, "IEEE 802.11: Sending SA Query Response to " 1200 MACSTR, MAC2STR(mgmt->sa)); 1201 1202 os_memset(&resp, 0, sizeof(resp)); 1203 resp.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 1204 WLAN_FC_STYPE_ACTION); 1205 os_memcpy(resp.da, mgmt->sa, ETH_ALEN); 1206 os_memcpy(resp.sa, hapd->own_addr, ETH_ALEN); 1207 os_memcpy(resp.bssid, hapd->own_addr, ETH_ALEN); 1208 resp.u.action.category = WLAN_ACTION_SA_QUERY; 1209 resp.u.action.u.sa_query_req.action = WLAN_SA_QUERY_RESPONSE; 1210 os_memcpy(resp.u.action.u.sa_query_req.trans_id, 1211 mgmt->u.action.u.sa_query_req.trans_id, 1212 WLAN_SA_QUERY_TR_ID_LEN); 1213 end = resp.u.action.u.sa_query_req.trans_id + WLAN_SA_QUERY_TR_ID_LEN; 1214 if (hapd->drv.send_mgmt_frame(hapd, &resp, end - (u8 *) &resp) < 0) 1215 perror("hostapd_sa_query_request: send"); 1216 } 1217 1218 1219 static void hostapd_sa_query_action(struct hostapd_data *hapd, 1220 const struct ieee80211_mgmt *mgmt, 1221 size_t len) 1222 { 1223 struct sta_info *sta; 1224 const u8 *end; 1225 int i; 1226 1227 end = mgmt->u.action.u.sa_query_resp.trans_id + 1228 WLAN_SA_QUERY_TR_ID_LEN; 1229 if (((u8 *) mgmt) + len < end) { 1230 wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short SA Query Action " 1231 "frame (len=%lu)", (unsigned long) len); 1232 return; 1233 } 1234 1235 if (mgmt->u.action.u.sa_query_resp.action == WLAN_SA_QUERY_REQUEST) { 1236 hostapd_sa_query_request(hapd, mgmt); 1237 return; 1238 } 1239 1240 if (mgmt->u.action.u.sa_query_resp.action != WLAN_SA_QUERY_RESPONSE) { 1241 wpa_printf(MSG_DEBUG, "IEEE 802.11: Unexpected SA Query " 1242 "Action %d", mgmt->u.action.u.sa_query_resp.action); 1243 return; 1244 } 1245 1246 wpa_printf(MSG_DEBUG, "IEEE 802.11: Received SA Query Response from " 1247 MACSTR, MAC2STR(mgmt->sa)); 1248 wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID", 1249 mgmt->u.action.u.sa_query_resp.trans_id, 1250 WLAN_SA_QUERY_TR_ID_LEN); 1251 1252 /* MLME-SAQuery.confirm */ 1253 1254 sta = ap_get_sta(hapd, mgmt->sa); 1255 if (sta == NULL || sta->sa_query_trans_id == NULL) { 1256 wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching STA with " 1257 "pending SA Query request found"); 1258 return; 1259 } 1260 1261 for (i = 0; i < sta->sa_query_count; i++) { 1262 if (os_memcmp(sta->sa_query_trans_id + 1263 i * WLAN_SA_QUERY_TR_ID_LEN, 1264 mgmt->u.action.u.sa_query_resp.trans_id, 1265 WLAN_SA_QUERY_TR_ID_LEN) == 0) 1266 break; 1267 } 1268 1269 if (i >= sta->sa_query_count) { 1270 wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching SA Query " 1271 "transaction identifier found"); 1272 return; 1273 } 1274 1275 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 1276 HOSTAPD_LEVEL_DEBUG, 1277 "Reply to pending SA Query received"); 1278 ap_sta_stop_sa_query(hapd, sta); 1279 } 1280 1281 1282 static int robust_action_frame(u8 category) 1283 { 1284 return category != WLAN_ACTION_PUBLIC && 1285 category != WLAN_ACTION_HT; 1286 } 1287 #endif /* CONFIG_IEEE80211W */ 1288 1289 1290 static void handle_action(struct hostapd_data *hapd, 1291 const struct ieee80211_mgmt *mgmt, size_t len) 1292 { 1293 struct sta_info *sta; 1294 1295 if (len < IEEE80211_HDRLEN + 1) { 1296 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, 1297 HOSTAPD_LEVEL_DEBUG, 1298 "handle_action - too short payload (len=%lu)", 1299 (unsigned long) len); 1300 return; 1301 } 1302 1303 sta = ap_get_sta(hapd, mgmt->sa); 1304 #ifdef CONFIG_IEEE80211W 1305 if (sta && (sta->flags & WLAN_STA_MFP) && 1306 !(mgmt->frame_control & host_to_le16(WLAN_FC_ISWEP) && 1307 robust_action_frame(mgmt->u.action.category))) { 1308 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, 1309 HOSTAPD_LEVEL_DEBUG, 1310 "Dropped unprotected Robust Action frame from " 1311 "an MFP STA"); 1312 return; 1313 } 1314 #endif /* CONFIG_IEEE80211W */ 1315 1316 switch (mgmt->u.action.category) { 1317 #ifdef CONFIG_IEEE80211R 1318 case WLAN_ACTION_FT: 1319 { 1320 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) { 1321 wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored FT Action " 1322 "frame from unassociated STA " MACSTR, 1323 MAC2STR(mgmt->sa)); 1324 return; 1325 } 1326 1327 if (wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action, 1328 len - IEEE80211_HDRLEN)) 1329 break; 1330 1331 return; 1332 } 1333 #endif /* CONFIG_IEEE80211R */ 1334 case WLAN_ACTION_WMM: 1335 hostapd_wmm_action(hapd, mgmt, len); 1336 return; 1337 #ifdef CONFIG_IEEE80211W 1338 case WLAN_ACTION_SA_QUERY: 1339 hostapd_sa_query_action(hapd, mgmt, len); 1340 return; 1341 #endif /* CONFIG_IEEE80211W */ 1342 case WLAN_ACTION_PUBLIC: 1343 if (hapd->public_action_cb) { 1344 hapd->public_action_cb(hapd->public_action_cb_ctx, 1345 (u8 *) mgmt, len, 1346 hapd->iface->freq); 1347 return; 1348 } 1349 break; 1350 } 1351 1352 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, 1353 HOSTAPD_LEVEL_DEBUG, 1354 "handle_action - unknown action category %d or invalid " 1355 "frame", 1356 mgmt->u.action.category); 1357 if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) && 1358 !(mgmt->sa[0] & 0x01)) { 1359 struct ieee80211_mgmt *resp; 1360 1361 /* 1362 * IEEE 802.11-REVma/D9.0 - 7.3.1.11 1363 * Return the Action frame to the source without change 1364 * except that MSB of the Category set to 1. 1365 */ 1366 wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action " 1367 "frame back to sender"); 1368 resp = os_malloc(len); 1369 if (resp == NULL) 1370 return; 1371 os_memcpy(resp, mgmt, len); 1372 os_memcpy(resp->da, resp->sa, ETH_ALEN); 1373 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN); 1374 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN); 1375 resp->u.action.category |= 0x80; 1376 1377 hapd->drv.send_mgmt_frame(hapd, resp, len); 1378 os_free(resp); 1379 } 1380 } 1381 1382 1383 /** 1384 * ieee802_11_mgmt - process incoming IEEE 802.11 management frames 1385 * @hapd: hostapd BSS data structure (the BSS to which the management frame was 1386 * sent to) 1387 * @buf: management frame data (starting from IEEE 802.11 header) 1388 * @len: length of frame data in octets 1389 * @fi: meta data about received frame (signal level, etc.) 1390 * 1391 * Process all incoming IEEE 802.11 management frames. This will be called for 1392 * each frame received from the kernel driver through wlan#ap interface. In 1393 * addition, it can be called to re-inserted pending frames (e.g., when using 1394 * external RADIUS server as an MAC ACL). 1395 */ 1396 void ieee802_11_mgmt(struct hostapd_data *hapd, const u8 *buf, size_t len, 1397 struct hostapd_frame_info *fi) 1398 { 1399 struct ieee80211_mgmt *mgmt; 1400 int broadcast; 1401 u16 fc, stype; 1402 1403 mgmt = (struct ieee80211_mgmt *) buf; 1404 fc = le_to_host16(mgmt->frame_control); 1405 stype = WLAN_FC_GET_STYPE(fc); 1406 1407 if (stype == WLAN_FC_STYPE_BEACON) { 1408 handle_beacon(hapd, mgmt, len, fi); 1409 return; 1410 } 1411 1412 broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff && 1413 mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff && 1414 mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff; 1415 1416 if (!broadcast && 1417 os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) { 1418 printf("MGMT: BSSID=" MACSTR " not our address\n", 1419 MAC2STR(mgmt->bssid)); 1420 return; 1421 } 1422 1423 1424 if (stype == WLAN_FC_STYPE_PROBE_REQ) { 1425 handle_probe_req(hapd, mgmt, len); 1426 return; 1427 } 1428 1429 if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) { 1430 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, 1431 HOSTAPD_LEVEL_DEBUG, 1432 "MGMT: DA=" MACSTR " not our address", 1433 MAC2STR(mgmt->da)); 1434 return; 1435 } 1436 1437 switch (stype) { 1438 case WLAN_FC_STYPE_AUTH: 1439 wpa_printf(MSG_DEBUG, "mgmt::auth"); 1440 handle_auth(hapd, mgmt, len); 1441 break; 1442 case WLAN_FC_STYPE_ASSOC_REQ: 1443 wpa_printf(MSG_DEBUG, "mgmt::assoc_req"); 1444 handle_assoc(hapd, mgmt, len, 0); 1445 break; 1446 case WLAN_FC_STYPE_REASSOC_REQ: 1447 wpa_printf(MSG_DEBUG, "mgmt::reassoc_req"); 1448 handle_assoc(hapd, mgmt, len, 1); 1449 break; 1450 case WLAN_FC_STYPE_DISASSOC: 1451 wpa_printf(MSG_DEBUG, "mgmt::disassoc"); 1452 handle_disassoc(hapd, mgmt, len); 1453 break; 1454 case WLAN_FC_STYPE_DEAUTH: 1455 wpa_printf(MSG_DEBUG, "mgmt::deauth"); 1456 handle_deauth(hapd, mgmt, len); 1457 break; 1458 case WLAN_FC_STYPE_ACTION: 1459 wpa_printf(MSG_DEBUG, "mgmt::action"); 1460 handle_action(hapd, mgmt, len); 1461 break; 1462 default: 1463 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, 1464 HOSTAPD_LEVEL_DEBUG, 1465 "unknown mgmt frame subtype %d", stype); 1466 break; 1467 } 1468 } 1469 1470 1471 static void handle_auth_cb(struct hostapd_data *hapd, 1472 const struct ieee80211_mgmt *mgmt, 1473 size_t len, int ok) 1474 { 1475 u16 auth_alg, auth_transaction, status_code; 1476 struct sta_info *sta; 1477 1478 if (!ok) { 1479 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211, 1480 HOSTAPD_LEVEL_NOTICE, 1481 "did not acknowledge authentication response"); 1482 return; 1483 } 1484 1485 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) { 1486 printf("handle_auth_cb - too short payload (len=%lu)\n", 1487 (unsigned long) len); 1488 return; 1489 } 1490 1491 auth_alg = le_to_host16(mgmt->u.auth.auth_alg); 1492 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction); 1493 status_code = le_to_host16(mgmt->u.auth.status_code); 1494 1495 sta = ap_get_sta(hapd, mgmt->da); 1496 if (!sta) { 1497 printf("handle_auth_cb: STA " MACSTR " not found\n", 1498 MAC2STR(mgmt->da)); 1499 return; 1500 } 1501 1502 if (status_code == WLAN_STATUS_SUCCESS && 1503 ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) || 1504 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) { 1505 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 1506 HOSTAPD_LEVEL_INFO, "authenticated"); 1507 sta->flags |= WLAN_STA_AUTH; 1508 } 1509 } 1510 1511 1512 static void handle_assoc_cb(struct hostapd_data *hapd, 1513 const struct ieee80211_mgmt *mgmt, 1514 size_t len, int reassoc, int ok) 1515 { 1516 u16 status; 1517 struct sta_info *sta; 1518 int new_assoc = 1; 1519 struct ieee80211_ht_capabilities ht_cap; 1520 1521 if (!ok) { 1522 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211, 1523 HOSTAPD_LEVEL_DEBUG, 1524 "did not acknowledge association response"); 1525 return; 1526 } 1527 1528 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) : 1529 sizeof(mgmt->u.assoc_resp))) { 1530 printf("handle_assoc_cb(reassoc=%d) - too short payload " 1531 "(len=%lu)\n", reassoc, (unsigned long) len); 1532 return; 1533 } 1534 1535 if (reassoc) 1536 status = le_to_host16(mgmt->u.reassoc_resp.status_code); 1537 else 1538 status = le_to_host16(mgmt->u.assoc_resp.status_code); 1539 1540 sta = ap_get_sta(hapd, mgmt->da); 1541 if (!sta) { 1542 printf("handle_assoc_cb: STA " MACSTR " not found\n", 1543 MAC2STR(mgmt->da)); 1544 return; 1545 } 1546 1547 if (status != WLAN_STATUS_SUCCESS) 1548 goto fail; 1549 1550 /* Stop previous accounting session, if one is started, and allocate 1551 * new session id for the new session. */ 1552 accounting_sta_stop(hapd, sta); 1553 1554 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 1555 HOSTAPD_LEVEL_INFO, 1556 "associated (aid %d)", 1557 sta->aid); 1558 1559 if (sta->flags & WLAN_STA_ASSOC) 1560 new_assoc = 0; 1561 sta->flags |= WLAN_STA_ASSOC; 1562 if ((!hapd->conf->ieee802_1x && !hapd->conf->wpa) || 1563 sta->auth_alg == WLAN_AUTH_FT) { 1564 /* 1565 * Open, static WEP, or FT protocol; no separate authorization 1566 * step. 1567 */ 1568 sta->flags |= WLAN_STA_AUTHORIZED; 1569 wpa_msg(hapd->msg_ctx, MSG_INFO, 1570 AP_STA_CONNECTED MACSTR, MAC2STR(sta->addr)); 1571 } 1572 1573 if (reassoc) 1574 mlme_reassociate_indication(hapd, sta); 1575 else 1576 mlme_associate_indication(hapd, sta); 1577 1578 #ifdef CONFIG_IEEE80211W 1579 sta->sa_query_timed_out = 0; 1580 #endif /* CONFIG_IEEE80211W */ 1581 1582 /* 1583 * Remove the STA entry in order to make sure the STA PS state gets 1584 * cleared and configuration gets updated in case of reassociation back 1585 * to the same AP. 1586 */ 1587 hapd->drv.sta_remove(hapd, sta->addr); 1588 1589 #ifdef CONFIG_IEEE80211N 1590 if (sta->flags & WLAN_STA_HT) 1591 hostapd_get_ht_capab(hapd, sta->ht_capabilities, &ht_cap); 1592 #endif /* CONFIG_IEEE80211N */ 1593 1594 if (hapd->drv.sta_add(hapd, sta->addr, sta->aid, sta->capability, 1595 sta->supported_rates, sta->supported_rates_len, 1596 sta->listen_interval, 1597 sta->flags & WLAN_STA_HT ? &ht_cap : NULL)) { 1598 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 1599 HOSTAPD_LEVEL_NOTICE, 1600 "Could not add STA to kernel driver"); 1601 } 1602 1603 if (sta->eapol_sm == NULL) { 1604 /* 1605 * This STA does not use RADIUS server for EAP authentication, 1606 * so bind it to the selected VLAN interface now, since the 1607 * interface selection is not going to change anymore. 1608 */ 1609 if (ap_sta_bind_vlan(hapd, sta, 0) < 0) 1610 goto fail; 1611 } else if (sta->vlan_id) { 1612 /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */ 1613 if (ap_sta_bind_vlan(hapd, sta, 0) < 0) 1614 goto fail; 1615 } 1616 1617 hapd->drv.set_sta_flags(hapd, sta); 1618 1619 if (sta->auth_alg == WLAN_AUTH_FT) 1620 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT); 1621 else 1622 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC); 1623 hapd->new_assoc_sta_cb(hapd, sta, !new_assoc); 1624 1625 ieee802_1x_notify_port_enabled(sta->eapol_sm, 1); 1626 1627 fail: 1628 /* Copy of the association request is not needed anymore */ 1629 if (sta->last_assoc_req) { 1630 os_free(sta->last_assoc_req); 1631 sta->last_assoc_req = NULL; 1632 } 1633 } 1634 1635 1636 /** 1637 * ieee802_11_mgmt_cb - Process management frame TX status callback 1638 * @hapd: hostapd BSS data structure (the BSS from which the management frame 1639 * was sent from) 1640 * @buf: management frame data (starting from IEEE 802.11 header) 1641 * @len: length of frame data in octets 1642 * @stype: management frame subtype from frame control field 1643 * @ok: Whether the frame was ACK'ed 1644 */ 1645 void ieee802_11_mgmt_cb(struct hostapd_data *hapd, const u8 *buf, size_t len, 1646 u16 stype, int ok) 1647 { 1648 const struct ieee80211_mgmt *mgmt; 1649 mgmt = (const struct ieee80211_mgmt *) buf; 1650 1651 switch (stype) { 1652 case WLAN_FC_STYPE_AUTH: 1653 wpa_printf(MSG_DEBUG, "mgmt::auth cb"); 1654 handle_auth_cb(hapd, mgmt, len, ok); 1655 break; 1656 case WLAN_FC_STYPE_ASSOC_RESP: 1657 wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb"); 1658 handle_assoc_cb(hapd, mgmt, len, 0, ok); 1659 break; 1660 case WLAN_FC_STYPE_REASSOC_RESP: 1661 wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb"); 1662 handle_assoc_cb(hapd, mgmt, len, 1, ok); 1663 break; 1664 case WLAN_FC_STYPE_PROBE_RESP: 1665 wpa_printf(MSG_DEBUG, "mgmt::proberesp cb"); 1666 break; 1667 case WLAN_FC_STYPE_DEAUTH: 1668 /* ignore */ 1669 break; 1670 case WLAN_FC_STYPE_ACTION: 1671 wpa_printf(MSG_DEBUG, "mgmt::action cb"); 1672 break; 1673 default: 1674 printf("unknown mgmt cb frame subtype %d\n", stype); 1675 break; 1676 } 1677 } 1678 1679 1680 int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen) 1681 { 1682 /* TODO */ 1683 return 0; 1684 } 1685 1686 1687 int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta, 1688 char *buf, size_t buflen) 1689 { 1690 /* TODO */ 1691 return 0; 1692 } 1693 1694 1695 void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr, 1696 const u8 *buf, size_t len, int ack) 1697 { 1698 struct sta_info *sta; 1699 struct hostapd_iface *iface = hapd->iface; 1700 1701 sta = ap_get_sta(hapd, addr); 1702 if (sta == NULL && iface->num_bss > 1) { 1703 size_t j; 1704 for (j = 0; j < iface->num_bss; j++) { 1705 hapd = iface->bss[j]; 1706 sta = ap_get_sta(hapd, addr); 1707 if (sta) 1708 break; 1709 } 1710 } 1711 if (sta == NULL) 1712 return; 1713 if (sta->flags & WLAN_STA_PENDING_POLL) { 1714 wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending " 1715 "activity poll", MAC2STR(sta->addr), 1716 ack ? "ACKed" : "did not ACK"); 1717 if (ack) 1718 sta->flags &= ~WLAN_STA_PENDING_POLL; 1719 } 1720 1721 ieee802_1x_tx_status(hapd, sta, buf, len, ack); 1722 } 1723 1724 1725 void ieee802_11_rx_from_unknown(struct hostapd_data *hapd, const u8 *src, 1726 int wds) 1727 { 1728 struct sta_info *sta; 1729 1730 sta = ap_get_sta(hapd, src); 1731 if (sta && (sta->flags & WLAN_STA_ASSOC)) { 1732 if (wds && !(sta->flags & WLAN_STA_WDS)) { 1733 wpa_printf(MSG_DEBUG, "Enable 4-address WDS mode for " 1734 "STA " MACSTR " (aid %u)", 1735 MAC2STR(sta->addr), sta->aid); 1736 sta->flags |= WLAN_STA_WDS; 1737 hapd->drv.set_wds_sta(hapd, sta->addr, sta->aid, 1); 1738 } 1739 return; 1740 } 1741 1742 wpa_printf(MSG_DEBUG, "Data/PS-poll frame from not associated STA " 1743 MACSTR, MAC2STR(src)); 1744 if (sta && (sta->flags & WLAN_STA_AUTH)) 1745 hapd->drv.sta_disassoc( 1746 hapd, src, 1747 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); 1748 else 1749 hapd->drv.sta_deauth( 1750 hapd, src, 1751 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); 1752 } 1753 1754 1755 #endif /* CONFIG_NATIVE_WINDOWS */ 1756