1 /* 2 * hostapd / IEEE 802.11 Management 3 * Copyright (c) 2002-2012, Jouni Malinen <j (at) 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 "utils/includes.h" 10 11 #ifndef CONFIG_NATIVE_WINDOWS 12 13 #include "utils/common.h" 14 #include "utils/eloop.h" 15 #include "crypto/crypto.h" 16 #include "drivers/driver.h" 17 #include "common/ieee802_11_defs.h" 18 #include "common/ieee802_11_common.h" 19 #include "common/wpa_ctrl.h" 20 #include "radius/radius.h" 21 #include "radius/radius_client.h" 22 #include "p2p/p2p.h" 23 #include "wps/wps.h" 24 #include "hostapd.h" 25 #include "beacon.h" 26 #include "ieee802_11_auth.h" 27 #include "sta_info.h" 28 #include "ieee802_1x.h" 29 #include "wpa_auth.h" 30 #include "wmm.h" 31 #include "ap_list.h" 32 #include "accounting.h" 33 #include "ap_config.h" 34 #include "ap_mlme.h" 35 #include "p2p_hostapd.h" 36 #include "ap_drv_ops.h" 37 #include "ieee802_11.h" 38 39 40 u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid) 41 { 42 u8 *pos = eid; 43 int i, num, count; 44 45 if (hapd->iface->current_rates == NULL) 46 return eid; 47 48 *pos++ = WLAN_EID_SUPP_RATES; 49 num = hapd->iface->num_rates; 50 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht) 51 num++; 52 if (num > 8) { 53 /* rest of the rates are encoded in Extended supported 54 * rates element */ 55 num = 8; 56 } 57 58 *pos++ = num; 59 count = 0; 60 for (i = 0, count = 0; i < hapd->iface->num_rates && count < num; 61 i++) { 62 count++; 63 *pos = hapd->iface->current_rates[i].rate / 5; 64 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC) 65 *pos |= 0x80; 66 pos++; 67 } 68 69 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht && 70 hapd->iface->num_rates < 8) 71 *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY; 72 73 return pos; 74 } 75 76 77 u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid) 78 { 79 u8 *pos = eid; 80 int i, num, count; 81 82 if (hapd->iface->current_rates == NULL) 83 return eid; 84 85 num = hapd->iface->num_rates; 86 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht) 87 num++; 88 if (num <= 8) 89 return eid; 90 num -= 8; 91 92 *pos++ = WLAN_EID_EXT_SUPP_RATES; 93 *pos++ = num; 94 count = 0; 95 for (i = 0, count = 0; i < hapd->iface->num_rates && count < num + 8; 96 i++) { 97 count++; 98 if (count <= 8) 99 continue; /* already in SuppRates IE */ 100 *pos = hapd->iface->current_rates[i].rate / 5; 101 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC) 102 *pos |= 0x80; 103 pos++; 104 } 105 106 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht && 107 hapd->iface->num_rates >= 8) 108 *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY; 109 110 return pos; 111 } 112 113 114 u16 hostapd_own_capab_info(struct hostapd_data *hapd, struct sta_info *sta, 115 int probe) 116 { 117 int capab = WLAN_CAPABILITY_ESS; 118 int privacy; 119 120 if (hapd->iface->num_sta_no_short_preamble == 0 && 121 hapd->iconf->preamble == SHORT_PREAMBLE) 122 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; 123 124 privacy = hapd->conf->ssid.wep.keys_set; 125 126 if (hapd->conf->ieee802_1x && 127 (hapd->conf->default_wep_key_len || 128 hapd->conf->individual_wep_key_len)) 129 privacy = 1; 130 131 if (hapd->conf->wpa) 132 privacy = 1; 133 134 if (sta) { 135 int policy, def_klen; 136 if (probe && sta->ssid_probe) { 137 policy = sta->ssid_probe->security_policy; 138 def_klen = sta->ssid_probe->wep.default_len; 139 } else { 140 policy = sta->ssid->security_policy; 141 def_klen = sta->ssid->wep.default_len; 142 } 143 privacy = policy != SECURITY_PLAINTEXT; 144 if (policy == SECURITY_IEEE_802_1X && def_klen == 0) 145 privacy = 0; 146 } 147 148 if (privacy) 149 capab |= WLAN_CAPABILITY_PRIVACY; 150 151 if (hapd->iface->current_mode && 152 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G && 153 hapd->iface->num_sta_no_short_slot_time == 0) 154 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; 155 156 return capab; 157 } 158 159 160 void ieee802_11_print_ssid(char *buf, const u8 *ssid, u8 len) 161 { 162 int i; 163 if (len > HOSTAPD_MAX_SSID_LEN) 164 len = HOSTAPD_MAX_SSID_LEN; 165 for (i = 0; i < len; i++) { 166 if (ssid[i] >= 32 && ssid[i] < 127) 167 buf[i] = ssid[i]; 168 else 169 buf[i] = '.'; 170 } 171 buf[len] = '\0'; 172 } 173 174 175 static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta, 176 u16 auth_transaction, const u8 *challenge, 177 int iswep) 178 { 179 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 180 HOSTAPD_LEVEL_DEBUG, 181 "authentication (shared key, transaction %d)", 182 auth_transaction); 183 184 if (auth_transaction == 1) { 185 if (!sta->challenge) { 186 /* Generate a pseudo-random challenge */ 187 u8 key[8]; 188 struct os_time now; 189 int r; 190 sta->challenge = os_zalloc(WLAN_AUTH_CHALLENGE_LEN); 191 if (sta->challenge == NULL) 192 return WLAN_STATUS_UNSPECIFIED_FAILURE; 193 194 os_get_time(&now); 195 r = os_random(); 196 os_memcpy(key, &now.sec, 4); 197 os_memcpy(key + 4, &r, 4); 198 rc4_skip(key, sizeof(key), 0, 199 sta->challenge, WLAN_AUTH_CHALLENGE_LEN); 200 } 201 return 0; 202 } 203 204 if (auth_transaction != 3) 205 return WLAN_STATUS_UNSPECIFIED_FAILURE; 206 207 /* Transaction 3 */ 208 if (!iswep || !sta->challenge || !challenge || 209 os_memcmp(sta->challenge, challenge, WLAN_AUTH_CHALLENGE_LEN)) { 210 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 211 HOSTAPD_LEVEL_INFO, 212 "shared key authentication - invalid " 213 "challenge-response"); 214 return WLAN_STATUS_CHALLENGE_FAIL; 215 } 216 217 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 218 HOSTAPD_LEVEL_DEBUG, 219 "authentication OK (shared key)"); 220 #ifdef IEEE80211_REQUIRE_AUTH_ACK 221 /* Station will be marked authenticated if it ACKs the 222 * authentication reply. */ 223 #else 224 sta->flags |= WLAN_STA_AUTH; 225 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH); 226 #endif 227 os_free(sta->challenge); 228 sta->challenge = NULL; 229 230 return 0; 231 } 232 233 234 static void send_auth_reply(struct hostapd_data *hapd, 235 const u8 *dst, const u8 *bssid, 236 u16 auth_alg, u16 auth_transaction, u16 resp, 237 const u8 *ies, size_t ies_len) 238 { 239 struct ieee80211_mgmt *reply; 240 u8 *buf; 241 size_t rlen; 242 243 rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth) + ies_len; 244 buf = os_zalloc(rlen); 245 if (buf == NULL) 246 return; 247 248 reply = (struct ieee80211_mgmt *) buf; 249 reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 250 WLAN_FC_STYPE_AUTH); 251 os_memcpy(reply->da, dst, ETH_ALEN); 252 os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN); 253 os_memcpy(reply->bssid, bssid, ETH_ALEN); 254 255 reply->u.auth.auth_alg = host_to_le16(auth_alg); 256 reply->u.auth.auth_transaction = host_to_le16(auth_transaction); 257 reply->u.auth.status_code = host_to_le16(resp); 258 259 if (ies && ies_len) 260 os_memcpy(reply->u.auth.variable, ies, ies_len); 261 262 wpa_printf(MSG_DEBUG, "authentication reply: STA=" MACSTR 263 " auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu)", 264 MAC2STR(dst), auth_alg, auth_transaction, 265 resp, (unsigned long) ies_len); 266 if (hostapd_drv_send_mlme(hapd, reply, rlen, 0) < 0) 267 perror("send_auth_reply: send"); 268 269 os_free(buf); 270 } 271 272 273 #ifdef CONFIG_IEEE80211R 274 static void handle_auth_ft_finish(void *ctx, const u8 *dst, const u8 *bssid, 275 u16 auth_transaction, u16 status, 276 const u8 *ies, size_t ies_len) 277 { 278 struct hostapd_data *hapd = ctx; 279 struct sta_info *sta; 280 281 send_auth_reply(hapd, dst, bssid, WLAN_AUTH_FT, auth_transaction, 282 status, ies, ies_len); 283 284 if (status != WLAN_STATUS_SUCCESS) 285 return; 286 287 sta = ap_get_sta(hapd, dst); 288 if (sta == NULL) 289 return; 290 291 hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211, 292 HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)"); 293 sta->flags |= WLAN_STA_AUTH; 294 mlme_authenticate_indication(hapd, sta); 295 } 296 #endif /* CONFIG_IEEE80211R */ 297 298 299 static void handle_auth(struct hostapd_data *hapd, 300 const struct ieee80211_mgmt *mgmt, size_t len) 301 { 302 u16 auth_alg, auth_transaction, status_code; 303 u16 resp = WLAN_STATUS_SUCCESS; 304 struct sta_info *sta = NULL; 305 int res; 306 u16 fc; 307 const u8 *challenge = NULL; 308 u32 session_timeout, acct_interim_interval; 309 int vlan_id = 0; 310 u8 psk[PMK_LEN]; 311 int has_psk = 0; 312 u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN]; 313 size_t resp_ies_len = 0; 314 char *identity = NULL; 315 char *radius_cui = NULL; 316 317 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) { 318 printf("handle_auth - too short payload (len=%lu)\n", 319 (unsigned long) len); 320 return; 321 } 322 323 auth_alg = le_to_host16(mgmt->u.auth.auth_alg); 324 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction); 325 status_code = le_to_host16(mgmt->u.auth.status_code); 326 fc = le_to_host16(mgmt->frame_control); 327 328 if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) + 329 2 + WLAN_AUTH_CHALLENGE_LEN && 330 mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE && 331 mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN) 332 challenge = &mgmt->u.auth.variable[2]; 333 334 wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d " 335 "auth_transaction=%d status_code=%d wep=%d%s", 336 MAC2STR(mgmt->sa), auth_alg, auth_transaction, 337 status_code, !!(fc & WLAN_FC_ISWEP), 338 challenge ? " challenge" : ""); 339 340 if (hapd->tkip_countermeasures) { 341 resp = WLAN_REASON_MICHAEL_MIC_FAILURE; 342 goto fail; 343 } 344 345 if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) && 346 auth_alg == WLAN_AUTH_OPEN) || 347 #ifdef CONFIG_IEEE80211R 348 (hapd->conf->wpa && wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt) && 349 auth_alg == WLAN_AUTH_FT) || 350 #endif /* CONFIG_IEEE80211R */ 351 ((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) && 352 auth_alg == WLAN_AUTH_SHARED_KEY))) { 353 printf("Unsupported authentication algorithm (%d)\n", 354 auth_alg); 355 resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG; 356 goto fail; 357 } 358 359 if (!(auth_transaction == 1 || 360 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) { 361 printf("Unknown authentication transaction number (%d)\n", 362 auth_transaction); 363 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION; 364 goto fail; 365 } 366 367 if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) { 368 printf("Station " MACSTR " not allowed to authenticate.\n", 369 MAC2STR(mgmt->sa)); 370 resp = WLAN_STATUS_UNSPECIFIED_FAILURE; 371 goto fail; 372 } 373 374 res = hostapd_allowed_address(hapd, mgmt->sa, (u8 *) mgmt, len, 375 &session_timeout, 376 &acct_interim_interval, &vlan_id, 377 psk, &has_psk, &identity, &radius_cui); 378 379 if (res == HOSTAPD_ACL_REJECT) { 380 printf("Station " MACSTR " not allowed to authenticate.\n", 381 MAC2STR(mgmt->sa)); 382 resp = WLAN_STATUS_UNSPECIFIED_FAILURE; 383 goto fail; 384 } 385 if (res == HOSTAPD_ACL_PENDING) { 386 wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR 387 " waiting for an external authentication", 388 MAC2STR(mgmt->sa)); 389 /* Authentication code will re-send the authentication frame 390 * after it has received (and cached) information from the 391 * external source. */ 392 return; 393 } 394 395 sta = ap_sta_add(hapd, mgmt->sa); 396 if (!sta) { 397 resp = WLAN_STATUS_UNSPECIFIED_FAILURE; 398 goto fail; 399 } 400 401 if (vlan_id > 0) { 402 if (hostapd_get_vlan_id_ifname(hapd->conf->vlan, 403 vlan_id) == NULL) { 404 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS, 405 HOSTAPD_LEVEL_INFO, "Invalid VLAN ID " 406 "%d received from RADIUS server", 407 vlan_id); 408 resp = WLAN_STATUS_UNSPECIFIED_FAILURE; 409 goto fail; 410 } 411 sta->vlan_id = vlan_id; 412 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS, 413 HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id); 414 } 415 416 if (has_psk && hapd->conf->wpa_psk_radius != PSK_RADIUS_IGNORED) { 417 os_free(sta->psk); 418 sta->psk = os_malloc(PMK_LEN); 419 if (sta->psk) 420 os_memcpy(sta->psk, psk, PMK_LEN); 421 } else { 422 os_free(sta->psk); 423 sta->psk = NULL; 424 } 425 426 sta->identity = identity; 427 identity = NULL; 428 sta->radius_cui = radius_cui; 429 radius_cui = NULL; 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 os_free(identity); 493 os_free(radius_cui); 494 495 send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg, 496 auth_transaction + 1, resp, resp_ies, resp_ies_len); 497 } 498 499 500 static int hostapd_get_aid(struct hostapd_data *hapd, struct sta_info *sta) 501 { 502 int i, j = 32, aid; 503 504 /* get a unique AID */ 505 if (sta->aid > 0) { 506 wpa_printf(MSG_DEBUG, " old AID %d", sta->aid); 507 return 0; 508 } 509 510 for (i = 0; i < AID_WORDS; i++) { 511 if (hapd->sta_aid[i] == (u32) -1) 512 continue; 513 for (j = 0; j < 32; j++) { 514 if (!(hapd->sta_aid[i] & BIT(j))) 515 break; 516 } 517 if (j < 32) 518 break; 519 } 520 if (j == 32) 521 return -1; 522 aid = i * 32 + j + 1; 523 if (aid > 2007) 524 return -1; 525 526 sta->aid = aid; 527 hapd->sta_aid[i] |= BIT(j); 528 wpa_printf(MSG_DEBUG, " new AID %d", sta->aid); 529 return 0; 530 } 531 532 533 static u16 check_ssid(struct hostapd_data *hapd, struct sta_info *sta, 534 const u8 *ssid_ie, size_t ssid_ie_len) 535 { 536 if (ssid_ie == NULL) 537 return WLAN_STATUS_UNSPECIFIED_FAILURE; 538 539 if (ssid_ie_len != hapd->conf->ssid.ssid_len || 540 os_memcmp(ssid_ie, hapd->conf->ssid.ssid, ssid_ie_len) != 0) { 541 char ssid_txt[33]; 542 ieee802_11_print_ssid(ssid_txt, ssid_ie, ssid_ie_len); 543 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 544 HOSTAPD_LEVEL_INFO, 545 "Station tried to associate with unknown SSID " 546 "'%s'", ssid_txt); 547 return WLAN_STATUS_UNSPECIFIED_FAILURE; 548 } 549 550 return WLAN_STATUS_SUCCESS; 551 } 552 553 554 static u16 check_wmm(struct hostapd_data *hapd, struct sta_info *sta, 555 const u8 *wmm_ie, size_t wmm_ie_len) 556 { 557 sta->flags &= ~WLAN_STA_WMM; 558 sta->qosinfo = 0; 559 if (wmm_ie && hapd->conf->wmm_enabled) { 560 struct wmm_information_element *wmm; 561 562 if (!hostapd_eid_wmm_valid(hapd, wmm_ie, wmm_ie_len)) { 563 hostapd_logger(hapd, sta->addr, 564 HOSTAPD_MODULE_WPA, 565 HOSTAPD_LEVEL_DEBUG, 566 "invalid WMM element in association " 567 "request"); 568 return WLAN_STATUS_UNSPECIFIED_FAILURE; 569 } 570 571 sta->flags |= WLAN_STA_WMM; 572 wmm = (struct wmm_information_element *) wmm_ie; 573 sta->qosinfo = wmm->qos_info; 574 } 575 return WLAN_STATUS_SUCCESS; 576 } 577 578 579 static u16 copy_supp_rates(struct hostapd_data *hapd, struct sta_info *sta, 580 struct ieee802_11_elems *elems) 581 { 582 if (!elems->supp_rates) { 583 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 584 HOSTAPD_LEVEL_DEBUG, 585 "No supported rates element in AssocReq"); 586 return WLAN_STATUS_UNSPECIFIED_FAILURE; 587 } 588 589 if (elems->supp_rates_len + elems->ext_supp_rates_len > 590 sizeof(sta->supported_rates)) { 591 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 592 HOSTAPD_LEVEL_DEBUG, 593 "Invalid supported rates element length %d+%d", 594 elems->supp_rates_len, 595 elems->ext_supp_rates_len); 596 return WLAN_STATUS_UNSPECIFIED_FAILURE; 597 } 598 599 sta->supported_rates_len = merge_byte_arrays( 600 sta->supported_rates, sizeof(sta->supported_rates), 601 elems->supp_rates, elems->supp_rates_len, 602 elems->ext_supp_rates, elems->ext_supp_rates_len); 603 604 return WLAN_STATUS_SUCCESS; 605 } 606 607 608 static u16 check_assoc_ies(struct hostapd_data *hapd, struct sta_info *sta, 609 const u8 *ies, size_t ies_len, int reassoc) 610 { 611 struct ieee802_11_elems elems; 612 u16 resp; 613 const u8 *wpa_ie; 614 size_t wpa_ie_len; 615 616 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) { 617 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 618 HOSTAPD_LEVEL_INFO, "Station sent an invalid " 619 "association request"); 620 return WLAN_STATUS_UNSPECIFIED_FAILURE; 621 } 622 623 resp = check_ssid(hapd, sta, elems.ssid, elems.ssid_len); 624 if (resp != WLAN_STATUS_SUCCESS) 625 return resp; 626 resp = check_wmm(hapd, sta, elems.wmm, elems.wmm_len); 627 if (resp != WLAN_STATUS_SUCCESS) 628 return resp; 629 resp = copy_supp_rates(hapd, sta, &elems); 630 if (resp != WLAN_STATUS_SUCCESS) 631 return resp; 632 #ifdef CONFIG_IEEE80211N 633 resp = copy_sta_ht_capab(hapd, sta, elems.ht_capabilities, 634 elems.ht_capabilities_len); 635 if (resp != WLAN_STATUS_SUCCESS) 636 return resp; 637 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht && 638 !(sta->flags & WLAN_STA_HT)) { 639 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 640 HOSTAPD_LEVEL_INFO, "Station does not support " 641 "mandatory HT PHY - reject association"); 642 return WLAN_STATUS_ASSOC_DENIED_NO_HT; 643 } 644 #endif /* CONFIG_IEEE80211N */ 645 646 #ifdef CONFIG_IEEE80211AC 647 resp = copy_sta_vht_capab(hapd, sta, elems.vht_capabilities, 648 elems.vht_capabilities_len); 649 if (resp != WLAN_STATUS_SUCCESS) 650 return resp; 651 if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht && 652 !(sta->flags & WLAN_STA_VHT)) { 653 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 654 HOSTAPD_LEVEL_INFO, "Station does not support " 655 "mandatory VHT PHY - reject association"); 656 return WLAN_STATUS_UNSPECIFIED_FAILURE; 657 } 658 #endif /* CONFIG_IEEE80211AC */ 659 660 if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) { 661 wpa_ie = elems.rsn_ie; 662 wpa_ie_len = elems.rsn_ie_len; 663 } else if ((hapd->conf->wpa & WPA_PROTO_WPA) && 664 elems.wpa_ie) { 665 wpa_ie = elems.wpa_ie; 666 wpa_ie_len = elems.wpa_ie_len; 667 } else { 668 wpa_ie = NULL; 669 wpa_ie_len = 0; 670 } 671 672 #ifdef CONFIG_WPS 673 sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS | WLAN_STA_WPS2); 674 if (hapd->conf->wps_state && elems.wps_ie) { 675 wpa_printf(MSG_DEBUG, "STA included WPS IE in (Re)Association " 676 "Request - assume WPS is used"); 677 sta->flags |= WLAN_STA_WPS; 678 wpabuf_free(sta->wps_ie); 679 sta->wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, 680 WPS_IE_VENDOR_TYPE); 681 if (sta->wps_ie && wps_is_20(sta->wps_ie)) { 682 wpa_printf(MSG_DEBUG, "WPS: STA supports WPS 2.0"); 683 sta->flags |= WLAN_STA_WPS2; 684 } 685 wpa_ie = NULL; 686 wpa_ie_len = 0; 687 if (sta->wps_ie && wps_validate_assoc_req(sta->wps_ie) < 0) { 688 wpa_printf(MSG_DEBUG, "WPS: Invalid WPS IE in " 689 "(Re)Association Request - reject"); 690 return WLAN_STATUS_INVALID_IE; 691 } 692 } else if (hapd->conf->wps_state && wpa_ie == NULL) { 693 wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE in " 694 "(Re)Association Request - possible WPS use"); 695 sta->flags |= WLAN_STA_MAYBE_WPS; 696 } else 697 #endif /* CONFIG_WPS */ 698 if (hapd->conf->wpa && wpa_ie == NULL) { 699 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 700 HOSTAPD_LEVEL_INFO, 701 "No WPA/RSN IE in association request"); 702 return WLAN_STATUS_INVALID_IE; 703 } 704 705 if (hapd->conf->wpa && wpa_ie) { 706 int res; 707 wpa_ie -= 2; 708 wpa_ie_len += 2; 709 if (sta->wpa_sm == NULL) 710 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, 711 sta->addr); 712 if (sta->wpa_sm == NULL) { 713 wpa_printf(MSG_WARNING, "Failed to initialize WPA " 714 "state machine"); 715 return WLAN_STATUS_UNSPECIFIED_FAILURE; 716 } 717 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm, 718 wpa_ie, wpa_ie_len, 719 elems.mdie, elems.mdie_len); 720 if (res == WPA_INVALID_GROUP) 721 resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID; 722 else if (res == WPA_INVALID_PAIRWISE) 723 resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID; 724 else if (res == WPA_INVALID_AKMP) 725 resp = WLAN_STATUS_AKMP_NOT_VALID; 726 else if (res == WPA_ALLOC_FAIL) 727 resp = WLAN_STATUS_UNSPECIFIED_FAILURE; 728 #ifdef CONFIG_IEEE80211W 729 else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION) 730 resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION; 731 else if (res == WPA_INVALID_MGMT_GROUP_CIPHER) 732 resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION; 733 #endif /* CONFIG_IEEE80211W */ 734 else if (res == WPA_INVALID_MDIE) 735 resp = WLAN_STATUS_INVALID_MDIE; 736 else if (res != WPA_IE_OK) 737 resp = WLAN_STATUS_INVALID_IE; 738 if (resp != WLAN_STATUS_SUCCESS) 739 return resp; 740 #ifdef CONFIG_IEEE80211W 741 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out && 742 sta->sa_query_count > 0) 743 ap_check_sa_query_timeout(hapd, sta); 744 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out && 745 (!reassoc || sta->auth_alg != WLAN_AUTH_FT)) { 746 /* 747 * STA has already been associated with MFP and SA 748 * Query timeout has not been reached. Reject the 749 * association attempt temporarily and start SA Query, 750 * if one is not pending. 751 */ 752 753 if (sta->sa_query_count == 0) 754 ap_sta_start_sa_query(hapd, sta); 755 756 return WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY; 757 } 758 759 if (wpa_auth_uses_mfp(sta->wpa_sm)) 760 sta->flags |= WLAN_STA_MFP; 761 else 762 sta->flags &= ~WLAN_STA_MFP; 763 #endif /* CONFIG_IEEE80211W */ 764 765 #ifdef CONFIG_IEEE80211R 766 if (sta->auth_alg == WLAN_AUTH_FT) { 767 if (!reassoc) { 768 wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried " 769 "to use association (not " 770 "re-association) with FT auth_alg", 771 MAC2STR(sta->addr)); 772 return WLAN_STATUS_UNSPECIFIED_FAILURE; 773 } 774 775 resp = wpa_ft_validate_reassoc(sta->wpa_sm, ies, 776 ies_len); 777 if (resp != WLAN_STATUS_SUCCESS) 778 return resp; 779 } 780 #endif /* CONFIG_IEEE80211R */ 781 782 #ifdef CONFIG_IEEE80211N 783 if ((sta->flags & (WLAN_STA_HT | WLAN_STA_VHT)) && 784 wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) { 785 hostapd_logger(hapd, sta->addr, 786 HOSTAPD_MODULE_IEEE80211, 787 HOSTAPD_LEVEL_INFO, 788 "Station tried to use TKIP with HT " 789 "association"); 790 return WLAN_STATUS_CIPHER_REJECTED_PER_POLICY; 791 } 792 #endif /* CONFIG_IEEE80211N */ 793 } else 794 wpa_auth_sta_no_wpa(sta->wpa_sm); 795 796 #ifdef CONFIG_P2P 797 if (elems.p2p) { 798 wpabuf_free(sta->p2p_ie); 799 sta->p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, 800 P2P_IE_VENDOR_TYPE); 801 802 } else { 803 wpabuf_free(sta->p2p_ie); 804 sta->p2p_ie = NULL; 805 } 806 807 p2p_group_notif_assoc(hapd->p2p_group, sta->addr, ies, ies_len); 808 #endif /* CONFIG_P2P */ 809 810 return WLAN_STATUS_SUCCESS; 811 } 812 813 814 static void send_deauth(struct hostapd_data *hapd, const u8 *addr, 815 u16 reason_code) 816 { 817 int send_len; 818 struct ieee80211_mgmt reply; 819 820 os_memset(&reply, 0, sizeof(reply)); 821 reply.frame_control = 822 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_DEAUTH); 823 os_memcpy(reply.da, addr, ETH_ALEN); 824 os_memcpy(reply.sa, hapd->own_addr, ETH_ALEN); 825 os_memcpy(reply.bssid, hapd->own_addr, ETH_ALEN); 826 827 send_len = IEEE80211_HDRLEN + sizeof(reply.u.deauth); 828 reply.u.deauth.reason_code = host_to_le16(reason_code); 829 830 if (hostapd_drv_send_mlme(hapd, &reply, send_len, 0) < 0) 831 wpa_printf(MSG_INFO, "Failed to send deauth: %s", 832 strerror(errno)); 833 } 834 835 836 static void send_assoc_resp(struct hostapd_data *hapd, struct sta_info *sta, 837 u16 status_code, int reassoc, const u8 *ies, 838 size_t ies_len) 839 { 840 int send_len; 841 u8 buf[sizeof(struct ieee80211_mgmt) + 1024]; 842 struct ieee80211_mgmt *reply; 843 u8 *p; 844 845 os_memset(buf, 0, sizeof(buf)); 846 reply = (struct ieee80211_mgmt *) buf; 847 reply->frame_control = 848 IEEE80211_FC(WLAN_FC_TYPE_MGMT, 849 (reassoc ? WLAN_FC_STYPE_REASSOC_RESP : 850 WLAN_FC_STYPE_ASSOC_RESP)); 851 os_memcpy(reply->da, sta->addr, ETH_ALEN); 852 os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN); 853 os_memcpy(reply->bssid, hapd->own_addr, ETH_ALEN); 854 855 send_len = IEEE80211_HDRLEN; 856 send_len += sizeof(reply->u.assoc_resp); 857 reply->u.assoc_resp.capab_info = 858 host_to_le16(hostapd_own_capab_info(hapd, sta, 0)); 859 reply->u.assoc_resp.status_code = host_to_le16(status_code); 860 reply->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0) 861 | BIT(14) | BIT(15)); 862 /* Supported rates */ 863 p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable); 864 /* Extended supported rates */ 865 p = hostapd_eid_ext_supp_rates(hapd, p); 866 867 #ifdef CONFIG_IEEE80211R 868 if (status_code == WLAN_STATUS_SUCCESS) { 869 /* IEEE 802.11r: Mobility Domain Information, Fast BSS 870 * Transition Information, RSN, [RIC Response] */ 871 p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p, 872 buf + sizeof(buf) - p, 873 sta->auth_alg, ies, ies_len); 874 } 875 #endif /* CONFIG_IEEE80211R */ 876 877 #ifdef CONFIG_IEEE80211W 878 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY) 879 p = hostapd_eid_assoc_comeback_time(hapd, sta, p); 880 #endif /* CONFIG_IEEE80211W */ 881 882 #ifdef CONFIG_IEEE80211N 883 p = hostapd_eid_ht_capabilities(hapd, p); 884 p = hostapd_eid_ht_operation(hapd, p); 885 #endif /* CONFIG_IEEE80211N */ 886 887 #ifdef CONFIG_IEEE80211AC 888 p = hostapd_eid_vht_capabilities(hapd, p); 889 p = hostapd_eid_vht_operation(hapd, p); 890 #endif /* CONFIG_IEEE80211AC */ 891 892 p = hostapd_eid_ext_capab(hapd, p); 893 p = hostapd_eid_bss_max_idle_period(hapd, p); 894 895 if (sta->flags & WLAN_STA_WMM) 896 p = hostapd_eid_wmm(hapd, p); 897 898 #ifdef CONFIG_WPS 899 if ((sta->flags & WLAN_STA_WPS) || 900 ((sta->flags & WLAN_STA_MAYBE_WPS) && hapd->conf->wpa)) { 901 struct wpabuf *wps = wps_build_assoc_resp_ie(); 902 if (wps) { 903 os_memcpy(p, wpabuf_head(wps), wpabuf_len(wps)); 904 p += wpabuf_len(wps); 905 wpabuf_free(wps); 906 } 907 } 908 #endif /* CONFIG_WPS */ 909 910 #ifdef CONFIG_P2P 911 if (sta->p2p_ie) { 912 struct wpabuf *p2p_resp_ie; 913 enum p2p_status_code status; 914 switch (status_code) { 915 case WLAN_STATUS_SUCCESS: 916 status = P2P_SC_SUCCESS; 917 break; 918 case WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA: 919 status = P2P_SC_FAIL_LIMIT_REACHED; 920 break; 921 default: 922 status = P2P_SC_FAIL_INVALID_PARAMS; 923 break; 924 } 925 p2p_resp_ie = p2p_group_assoc_resp_ie(hapd->p2p_group, status); 926 if (p2p_resp_ie) { 927 os_memcpy(p, wpabuf_head(p2p_resp_ie), 928 wpabuf_len(p2p_resp_ie)); 929 p += wpabuf_len(p2p_resp_ie); 930 wpabuf_free(p2p_resp_ie); 931 } 932 } 933 #endif /* CONFIG_P2P */ 934 935 #ifdef CONFIG_P2P_MANAGER 936 if (hapd->conf->p2p & P2P_MANAGE) 937 p = hostapd_eid_p2p_manage(hapd, p); 938 #endif /* CONFIG_P2P_MANAGER */ 939 940 send_len += p - reply->u.assoc_resp.variable; 941 942 if (hostapd_drv_send_mlme(hapd, reply, send_len, 0) < 0) 943 wpa_printf(MSG_INFO, "Failed to send assoc resp: %s", 944 strerror(errno)); 945 } 946 947 948 static void handle_assoc(struct hostapd_data *hapd, 949 const struct ieee80211_mgmt *mgmt, size_t len, 950 int reassoc) 951 { 952 u16 capab_info, listen_interval; 953 u16 resp = WLAN_STATUS_SUCCESS; 954 const u8 *pos; 955 int left, i; 956 struct sta_info *sta; 957 958 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) : 959 sizeof(mgmt->u.assoc_req))) { 960 printf("handle_assoc(reassoc=%d) - too short payload (len=%lu)" 961 "\n", reassoc, (unsigned long) len); 962 return; 963 } 964 965 if (reassoc) { 966 capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info); 967 listen_interval = le_to_host16( 968 mgmt->u.reassoc_req.listen_interval); 969 wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR 970 " capab_info=0x%02x listen_interval=%d current_ap=" 971 MACSTR, 972 MAC2STR(mgmt->sa), capab_info, listen_interval, 973 MAC2STR(mgmt->u.reassoc_req.current_ap)); 974 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req)); 975 pos = mgmt->u.reassoc_req.variable; 976 } else { 977 capab_info = le_to_host16(mgmt->u.assoc_req.capab_info); 978 listen_interval = le_to_host16( 979 mgmt->u.assoc_req.listen_interval); 980 wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR 981 " capab_info=0x%02x listen_interval=%d", 982 MAC2STR(mgmt->sa), capab_info, listen_interval); 983 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req)); 984 pos = mgmt->u.assoc_req.variable; 985 } 986 987 sta = ap_get_sta(hapd, mgmt->sa); 988 #ifdef CONFIG_IEEE80211R 989 if (sta && sta->auth_alg == WLAN_AUTH_FT && 990 (sta->flags & WLAN_STA_AUTH) == 0) { 991 wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate " 992 "prior to authentication since it is using " 993 "over-the-DS FT", MAC2STR(mgmt->sa)); 994 } else 995 #endif /* CONFIG_IEEE80211R */ 996 if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) { 997 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, 998 HOSTAPD_LEVEL_INFO, "Station tried to " 999 "associate before authentication " 1000 "(aid=%d flags=0x%x)", 1001 sta ? sta->aid : -1, 1002 sta ? sta->flags : 0); 1003 send_deauth(hapd, mgmt->sa, 1004 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA); 1005 return; 1006 } 1007 1008 if (hapd->tkip_countermeasures) { 1009 resp = WLAN_REASON_MICHAEL_MIC_FAILURE; 1010 goto fail; 1011 } 1012 1013 if (listen_interval > hapd->conf->max_listen_interval) { 1014 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, 1015 HOSTAPD_LEVEL_DEBUG, 1016 "Too large Listen Interval (%d)", 1017 listen_interval); 1018 resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE; 1019 goto fail; 1020 } 1021 1022 /* followed by SSID and Supported rates; and HT capabilities if 802.11n 1023 * is used */ 1024 resp = check_assoc_ies(hapd, sta, pos, left, reassoc); 1025 if (resp != WLAN_STATUS_SUCCESS) 1026 goto fail; 1027 1028 if (hostapd_get_aid(hapd, sta) < 0) { 1029 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, 1030 HOSTAPD_LEVEL_INFO, "No room for more AIDs"); 1031 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA; 1032 goto fail; 1033 } 1034 1035 sta->capability = capab_info; 1036 sta->listen_interval = listen_interval; 1037 1038 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G) 1039 sta->flags |= WLAN_STA_NONERP; 1040 for (i = 0; i < sta->supported_rates_len; i++) { 1041 if ((sta->supported_rates[i] & 0x7f) > 22) { 1042 sta->flags &= ~WLAN_STA_NONERP; 1043 break; 1044 } 1045 } 1046 if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) { 1047 sta->nonerp_set = 1; 1048 hapd->iface->num_sta_non_erp++; 1049 if (hapd->iface->num_sta_non_erp == 1) 1050 ieee802_11_set_beacons(hapd->iface); 1051 } 1052 1053 if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) && 1054 !sta->no_short_slot_time_set) { 1055 sta->no_short_slot_time_set = 1; 1056 hapd->iface->num_sta_no_short_slot_time++; 1057 if (hapd->iface->current_mode->mode == 1058 HOSTAPD_MODE_IEEE80211G && 1059 hapd->iface->num_sta_no_short_slot_time == 1) 1060 ieee802_11_set_beacons(hapd->iface); 1061 } 1062 1063 if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) 1064 sta->flags |= WLAN_STA_SHORT_PREAMBLE; 1065 else 1066 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE; 1067 1068 if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) && 1069 !sta->no_short_preamble_set) { 1070 sta->no_short_preamble_set = 1; 1071 hapd->iface->num_sta_no_short_preamble++; 1072 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G 1073 && hapd->iface->num_sta_no_short_preamble == 1) 1074 ieee802_11_set_beacons(hapd->iface); 1075 } 1076 1077 #ifdef CONFIG_IEEE80211N 1078 update_ht_state(hapd, sta); 1079 #endif /* CONFIG_IEEE80211N */ 1080 1081 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 1082 HOSTAPD_LEVEL_DEBUG, 1083 "association OK (aid %d)", sta->aid); 1084 /* Station will be marked associated, after it acknowledges AssocResp 1085 */ 1086 sta->flags |= WLAN_STA_ASSOC_REQ_OK; 1087 1088 #ifdef CONFIG_IEEE80211W 1089 if ((sta->flags & WLAN_STA_MFP) && sta->sa_query_timed_out) { 1090 wpa_printf(MSG_DEBUG, "Allowing %sassociation after timed out " 1091 "SA Query procedure", reassoc ? "re" : ""); 1092 /* TODO: Send a protected Disassociate frame to the STA using 1093 * the old key and Reason Code "Previous Authentication no 1094 * longer valid". Make sure this is only sent protected since 1095 * unprotected frame would be received by the STA that is now 1096 * trying to associate. 1097 */ 1098 } 1099 #endif /* CONFIG_IEEE80211W */ 1100 1101 if (reassoc) { 1102 os_memcpy(sta->previous_ap, mgmt->u.reassoc_req.current_ap, 1103 ETH_ALEN); 1104 } 1105 1106 if (sta->last_assoc_req) 1107 os_free(sta->last_assoc_req); 1108 sta->last_assoc_req = os_malloc(len); 1109 if (sta->last_assoc_req) 1110 os_memcpy(sta->last_assoc_req, mgmt, len); 1111 1112 /* Make sure that the previously registered inactivity timer will not 1113 * remove the STA immediately. */ 1114 sta->timeout_next = STA_NULLFUNC; 1115 1116 fail: 1117 send_assoc_resp(hapd, sta, resp, reassoc, pos, left); 1118 } 1119 1120 1121 static void handle_disassoc(struct hostapd_data *hapd, 1122 const struct ieee80211_mgmt *mgmt, size_t len) 1123 { 1124 struct sta_info *sta; 1125 1126 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) { 1127 printf("handle_disassoc - too short payload (len=%lu)\n", 1128 (unsigned long) len); 1129 return; 1130 } 1131 1132 wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d", 1133 MAC2STR(mgmt->sa), 1134 le_to_host16(mgmt->u.disassoc.reason_code)); 1135 1136 sta = ap_get_sta(hapd, mgmt->sa); 1137 if (sta == NULL) { 1138 printf("Station " MACSTR " trying to disassociate, but it " 1139 "is not associated.\n", MAC2STR(mgmt->sa)); 1140 return; 1141 } 1142 1143 ap_sta_set_authorized(hapd, sta, 0); 1144 sta->flags &= ~(WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK); 1145 wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC); 1146 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 1147 HOSTAPD_LEVEL_INFO, "disassociated"); 1148 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST; 1149 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0); 1150 /* Stop Accounting and IEEE 802.1X sessions, but leave the STA 1151 * authenticated. */ 1152 accounting_sta_stop(hapd, sta); 1153 ieee802_1x_free_station(sta); 1154 hostapd_drv_sta_remove(hapd, sta->addr); 1155 1156 if (sta->timeout_next == STA_NULLFUNC || 1157 sta->timeout_next == STA_DISASSOC) { 1158 sta->timeout_next = STA_DEAUTH; 1159 eloop_cancel_timeout(ap_handle_timer, hapd, sta); 1160 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer, 1161 hapd, sta); 1162 } 1163 1164 mlme_disassociate_indication( 1165 hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code)); 1166 } 1167 1168 1169 static void handle_deauth(struct hostapd_data *hapd, 1170 const struct ieee80211_mgmt *mgmt, size_t len) 1171 { 1172 struct sta_info *sta; 1173 1174 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) { 1175 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "handle_deauth - too short " 1176 "payload (len=%lu)", (unsigned long) len); 1177 return; 1178 } 1179 1180 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "deauthentication: STA=" MACSTR 1181 " reason_code=%d", 1182 MAC2STR(mgmt->sa), le_to_host16(mgmt->u.deauth.reason_code)); 1183 1184 sta = ap_get_sta(hapd, mgmt->sa); 1185 if (sta == NULL) { 1186 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR " trying " 1187 "to deauthenticate, but it is not authenticated", 1188 MAC2STR(mgmt->sa)); 1189 return; 1190 } 1191 1192 ap_sta_set_authorized(hapd, sta, 0); 1193 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC | 1194 WLAN_STA_ASSOC_REQ_OK); 1195 wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH); 1196 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 1197 HOSTAPD_LEVEL_DEBUG, "deauthenticated"); 1198 mlme_deauthenticate_indication( 1199 hapd, sta, le_to_host16(mgmt->u.deauth.reason_code)); 1200 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST; 1201 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0); 1202 ap_free_sta(hapd, sta); 1203 } 1204 1205 1206 static void handle_beacon(struct hostapd_data *hapd, 1207 const struct ieee80211_mgmt *mgmt, size_t len, 1208 struct hostapd_frame_info *fi) 1209 { 1210 struct ieee802_11_elems elems; 1211 1212 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) { 1213 printf("handle_beacon - too short payload (len=%lu)\n", 1214 (unsigned long) len); 1215 return; 1216 } 1217 1218 (void) ieee802_11_parse_elems(mgmt->u.beacon.variable, 1219 len - (IEEE80211_HDRLEN + 1220 sizeof(mgmt->u.beacon)), &elems, 1221 0); 1222 1223 ap_list_process_beacon(hapd->iface, mgmt, &elems, fi); 1224 } 1225 1226 1227 #ifdef CONFIG_IEEE80211W 1228 1229 static void hostapd_sa_query_action(struct hostapd_data *hapd, 1230 const struct ieee80211_mgmt *mgmt, 1231 size_t len) 1232 { 1233 const u8 *end; 1234 1235 end = mgmt->u.action.u.sa_query_resp.trans_id + 1236 WLAN_SA_QUERY_TR_ID_LEN; 1237 if (((u8 *) mgmt) + len < end) { 1238 wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short SA Query Action " 1239 "frame (len=%lu)", (unsigned long) len); 1240 return; 1241 } 1242 1243 ieee802_11_sa_query_action(hapd, mgmt->sa, 1244 mgmt->u.action.u.sa_query_resp.action, 1245 mgmt->u.action.u.sa_query_resp.trans_id); 1246 } 1247 1248 1249 static int robust_action_frame(u8 category) 1250 { 1251 return category != WLAN_ACTION_PUBLIC && 1252 category != WLAN_ACTION_HT; 1253 } 1254 #endif /* CONFIG_IEEE80211W */ 1255 1256 1257 static void handle_action(struct hostapd_data *hapd, 1258 const struct ieee80211_mgmt *mgmt, size_t len) 1259 { 1260 #if defined(CONFIG_IEEE80211W) || defined(CONFIG_IEEE80211R) 1261 struct sta_info *sta; 1262 sta = ap_get_sta(hapd, mgmt->sa); 1263 #endif /* CONFIG_IEEE80211W || CONFIG_IEEE80211R */ 1264 1265 if (len < IEEE80211_HDRLEN + 1) { 1266 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, 1267 HOSTAPD_LEVEL_DEBUG, 1268 "handle_action - too short payload (len=%lu)", 1269 (unsigned long) len); 1270 return; 1271 } 1272 1273 #ifdef CONFIG_IEEE80211W 1274 if (sta && (sta->flags & WLAN_STA_MFP) && 1275 !(mgmt->frame_control & host_to_le16(WLAN_FC_ISWEP) && 1276 robust_action_frame(mgmt->u.action.category))) { 1277 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, 1278 HOSTAPD_LEVEL_DEBUG, 1279 "Dropped unprotected Robust Action frame from " 1280 "an MFP STA"); 1281 return; 1282 } 1283 #endif /* CONFIG_IEEE80211W */ 1284 1285 switch (mgmt->u.action.category) { 1286 #ifdef CONFIG_IEEE80211R 1287 case WLAN_ACTION_FT: 1288 { 1289 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) { 1290 wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored FT Action " 1291 "frame from unassociated STA " MACSTR, 1292 MAC2STR(mgmt->sa)); 1293 return; 1294 } 1295 1296 if (wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action, 1297 len - IEEE80211_HDRLEN)) 1298 break; 1299 1300 return; 1301 } 1302 #endif /* CONFIG_IEEE80211R */ 1303 case WLAN_ACTION_WMM: 1304 hostapd_wmm_action(hapd, mgmt, len); 1305 return; 1306 #ifdef CONFIG_IEEE80211W 1307 case WLAN_ACTION_SA_QUERY: 1308 hostapd_sa_query_action(hapd, mgmt, len); 1309 return; 1310 #endif /* CONFIG_IEEE80211W */ 1311 case WLAN_ACTION_PUBLIC: 1312 if (hapd->public_action_cb) { 1313 hapd->public_action_cb(hapd->public_action_cb_ctx, 1314 (u8 *) mgmt, len, 1315 hapd->iface->freq); 1316 return; 1317 } 1318 break; 1319 case WLAN_ACTION_VENDOR_SPECIFIC: 1320 if (hapd->vendor_action_cb) { 1321 if (hapd->vendor_action_cb(hapd->vendor_action_cb_ctx, 1322 (u8 *) mgmt, len, 1323 hapd->iface->freq) == 0) 1324 return; 1325 } 1326 break; 1327 } 1328 1329 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, 1330 HOSTAPD_LEVEL_DEBUG, 1331 "handle_action - unknown action category %d or invalid " 1332 "frame", 1333 mgmt->u.action.category); 1334 if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) && 1335 !(mgmt->sa[0] & 0x01)) { 1336 struct ieee80211_mgmt *resp; 1337 1338 /* 1339 * IEEE 802.11-REVma/D9.0 - 7.3.1.11 1340 * Return the Action frame to the source without change 1341 * except that MSB of the Category set to 1. 1342 */ 1343 wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action " 1344 "frame back to sender"); 1345 resp = os_malloc(len); 1346 if (resp == NULL) 1347 return; 1348 os_memcpy(resp, mgmt, len); 1349 os_memcpy(resp->da, resp->sa, ETH_ALEN); 1350 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN); 1351 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN); 1352 resp->u.action.category |= 0x80; 1353 1354 if (hostapd_drv_send_mlme(hapd, resp, len, 0) < 0) { 1355 wpa_printf(MSG_ERROR, "IEEE 802.11: Failed to send " 1356 "Action frame"); 1357 } 1358 os_free(resp); 1359 } 1360 } 1361 1362 1363 /** 1364 * ieee802_11_mgmt - process incoming IEEE 802.11 management frames 1365 * @hapd: hostapd BSS data structure (the BSS to which the management frame was 1366 * sent to) 1367 * @buf: management frame data (starting from IEEE 802.11 header) 1368 * @len: length of frame data in octets 1369 * @fi: meta data about received frame (signal level, etc.) 1370 * 1371 * Process all incoming IEEE 802.11 management frames. This will be called for 1372 * each frame received from the kernel driver through wlan#ap interface. In 1373 * addition, it can be called to re-inserted pending frames (e.g., when using 1374 * external RADIUS server as an MAC ACL). 1375 */ 1376 void ieee802_11_mgmt(struct hostapd_data *hapd, const u8 *buf, size_t len, 1377 struct hostapd_frame_info *fi) 1378 { 1379 struct ieee80211_mgmt *mgmt; 1380 int broadcast; 1381 u16 fc, stype; 1382 1383 if (len < 24) 1384 return; 1385 1386 mgmt = (struct ieee80211_mgmt *) buf; 1387 fc = le_to_host16(mgmt->frame_control); 1388 stype = WLAN_FC_GET_STYPE(fc); 1389 1390 if (stype == WLAN_FC_STYPE_BEACON) { 1391 handle_beacon(hapd, mgmt, len, fi); 1392 return; 1393 } 1394 1395 broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff && 1396 mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff && 1397 mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff; 1398 1399 if (!broadcast && 1400 #ifdef CONFIG_P2P 1401 /* Invitation responses can be sent with the peer MAC as BSSID */ 1402 !((hapd->conf->p2p & P2P_GROUP_OWNER) && 1403 stype == WLAN_FC_STYPE_ACTION) && 1404 #endif /* CONFIG_P2P */ 1405 os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) { 1406 printf("MGMT: BSSID=" MACSTR " not our address\n", 1407 MAC2STR(mgmt->bssid)); 1408 return; 1409 } 1410 1411 1412 if (stype == WLAN_FC_STYPE_PROBE_REQ) { 1413 handle_probe_req(hapd, mgmt, len, fi->ssi_signal); 1414 return; 1415 } 1416 1417 if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) { 1418 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, 1419 HOSTAPD_LEVEL_DEBUG, 1420 "MGMT: DA=" MACSTR " not our address", 1421 MAC2STR(mgmt->da)); 1422 return; 1423 } 1424 1425 switch (stype) { 1426 case WLAN_FC_STYPE_AUTH: 1427 wpa_printf(MSG_DEBUG, "mgmt::auth"); 1428 handle_auth(hapd, mgmt, len); 1429 break; 1430 case WLAN_FC_STYPE_ASSOC_REQ: 1431 wpa_printf(MSG_DEBUG, "mgmt::assoc_req"); 1432 handle_assoc(hapd, mgmt, len, 0); 1433 break; 1434 case WLAN_FC_STYPE_REASSOC_REQ: 1435 wpa_printf(MSG_DEBUG, "mgmt::reassoc_req"); 1436 handle_assoc(hapd, mgmt, len, 1); 1437 break; 1438 case WLAN_FC_STYPE_DISASSOC: 1439 wpa_printf(MSG_DEBUG, "mgmt::disassoc"); 1440 handle_disassoc(hapd, mgmt, len); 1441 break; 1442 case WLAN_FC_STYPE_DEAUTH: 1443 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "mgmt::deauth"); 1444 handle_deauth(hapd, mgmt, len); 1445 break; 1446 case WLAN_FC_STYPE_ACTION: 1447 wpa_printf(MSG_DEBUG, "mgmt::action"); 1448 handle_action(hapd, mgmt, len); 1449 break; 1450 default: 1451 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, 1452 HOSTAPD_LEVEL_DEBUG, 1453 "unknown mgmt frame subtype %d", stype); 1454 break; 1455 } 1456 } 1457 1458 1459 static void handle_auth_cb(struct hostapd_data *hapd, 1460 const struct ieee80211_mgmt *mgmt, 1461 size_t len, int ok) 1462 { 1463 u16 auth_alg, auth_transaction, status_code; 1464 struct sta_info *sta; 1465 1466 if (!ok) { 1467 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211, 1468 HOSTAPD_LEVEL_NOTICE, 1469 "did not acknowledge authentication response"); 1470 return; 1471 } 1472 1473 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) { 1474 printf("handle_auth_cb - too short payload (len=%lu)\n", 1475 (unsigned long) len); 1476 return; 1477 } 1478 1479 auth_alg = le_to_host16(mgmt->u.auth.auth_alg); 1480 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction); 1481 status_code = le_to_host16(mgmt->u.auth.status_code); 1482 1483 sta = ap_get_sta(hapd, mgmt->da); 1484 if (!sta) { 1485 printf("handle_auth_cb: STA " MACSTR " not found\n", 1486 MAC2STR(mgmt->da)); 1487 return; 1488 } 1489 1490 if (status_code == WLAN_STATUS_SUCCESS && 1491 ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) || 1492 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) { 1493 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 1494 HOSTAPD_LEVEL_INFO, "authenticated"); 1495 sta->flags |= WLAN_STA_AUTH; 1496 } 1497 } 1498 1499 1500 static void handle_assoc_cb(struct hostapd_data *hapd, 1501 const struct ieee80211_mgmt *mgmt, 1502 size_t len, int reassoc, int ok) 1503 { 1504 u16 status; 1505 struct sta_info *sta; 1506 int new_assoc = 1; 1507 struct ieee80211_ht_capabilities ht_cap; 1508 1509 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) : 1510 sizeof(mgmt->u.assoc_resp))) { 1511 printf("handle_assoc_cb(reassoc=%d) - too short payload " 1512 "(len=%lu)\n", reassoc, (unsigned long) len); 1513 return; 1514 } 1515 1516 sta = ap_get_sta(hapd, mgmt->da); 1517 if (!sta) { 1518 printf("handle_assoc_cb: STA " MACSTR " not found\n", 1519 MAC2STR(mgmt->da)); 1520 return; 1521 } 1522 1523 if (!ok) { 1524 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211, 1525 HOSTAPD_LEVEL_DEBUG, 1526 "did not acknowledge association response"); 1527 sta->flags &= ~WLAN_STA_ASSOC_REQ_OK; 1528 return; 1529 } 1530 1531 if (reassoc) 1532 status = le_to_host16(mgmt->u.reassoc_resp.status_code); 1533 else 1534 status = le_to_host16(mgmt->u.assoc_resp.status_code); 1535 1536 if (status != WLAN_STATUS_SUCCESS) 1537 goto fail; 1538 1539 /* Stop previous accounting session, if one is started, and allocate 1540 * new session id for the new session. */ 1541 accounting_sta_stop(hapd, sta); 1542 1543 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 1544 HOSTAPD_LEVEL_INFO, 1545 "associated (aid %d)", 1546 sta->aid); 1547 1548 if (sta->flags & WLAN_STA_ASSOC) 1549 new_assoc = 0; 1550 sta->flags |= WLAN_STA_ASSOC; 1551 if ((!hapd->conf->ieee802_1x && !hapd->conf->wpa) || 1552 sta->auth_alg == WLAN_AUTH_FT) { 1553 /* 1554 * Open, static WEP, or FT protocol; no separate authorization 1555 * step. 1556 */ 1557 ap_sta_set_authorized(hapd, sta, 1); 1558 } 1559 1560 if (reassoc) 1561 mlme_reassociate_indication(hapd, sta); 1562 else 1563 mlme_associate_indication(hapd, sta); 1564 1565 #ifdef CONFIG_IEEE80211W 1566 sta->sa_query_timed_out = 0; 1567 #endif /* CONFIG_IEEE80211W */ 1568 1569 /* 1570 * Remove the STA entry in order to make sure the STA PS state gets 1571 * cleared and configuration gets updated in case of reassociation back 1572 * to the same AP. 1573 */ 1574 hostapd_drv_sta_remove(hapd, sta->addr); 1575 1576 #ifdef CONFIG_IEEE80211N 1577 if (sta->flags & WLAN_STA_HT) 1578 hostapd_get_ht_capab(hapd, sta->ht_capabilities, &ht_cap); 1579 #endif /* CONFIG_IEEE80211N */ 1580 1581 if (hostapd_sta_add(hapd, sta->addr, sta->aid, sta->capability, 1582 sta->supported_rates, sta->supported_rates_len, 1583 sta->listen_interval, 1584 sta->flags & WLAN_STA_HT ? &ht_cap : NULL, 1585 sta->flags, sta->qosinfo)) { 1586 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 1587 HOSTAPD_LEVEL_NOTICE, 1588 "Could not add STA to kernel driver"); 1589 1590 ap_sta_disconnect(hapd, sta, sta->addr, 1591 WLAN_REASON_DISASSOC_AP_BUSY); 1592 1593 goto fail; 1594 } 1595 1596 if (sta->flags & WLAN_STA_WDS) 1597 hostapd_set_wds_sta(hapd, sta->addr, sta->aid, 1); 1598 1599 if (sta->eapol_sm == NULL) { 1600 /* 1601 * This STA does not use RADIUS server for EAP authentication, 1602 * so bind it to the selected VLAN interface now, since the 1603 * interface selection is not going to change anymore. 1604 */ 1605 if (ap_sta_bind_vlan(hapd, sta, 0) < 0) 1606 goto fail; 1607 } else if (sta->vlan_id) { 1608 /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */ 1609 if (ap_sta_bind_vlan(hapd, sta, 0) < 0) 1610 goto fail; 1611 } 1612 1613 hostapd_set_sta_flags(hapd, sta); 1614 1615 if (sta->auth_alg == WLAN_AUTH_FT) 1616 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT); 1617 else 1618 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC); 1619 hapd->new_assoc_sta_cb(hapd, sta, !new_assoc); 1620 1621 ieee802_1x_notify_port_enabled(sta->eapol_sm, 1); 1622 1623 fail: 1624 /* Copy of the association request is not needed anymore */ 1625 if (sta->last_assoc_req) { 1626 os_free(sta->last_assoc_req); 1627 sta->last_assoc_req = NULL; 1628 } 1629 } 1630 1631 1632 static void handle_deauth_cb(struct hostapd_data *hapd, 1633 const struct ieee80211_mgmt *mgmt, 1634 size_t len, int ok) 1635 { 1636 struct sta_info *sta; 1637 if (mgmt->da[0] & 0x01) 1638 return; 1639 sta = ap_get_sta(hapd, mgmt->da); 1640 if (!sta) { 1641 wpa_printf(MSG_DEBUG, "handle_deauth_cb: STA " MACSTR 1642 " not found", MAC2STR(mgmt->da)); 1643 return; 1644 } 1645 if (ok) 1646 wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged deauth", 1647 MAC2STR(sta->addr)); 1648 else 1649 wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge " 1650 "deauth", MAC2STR(sta->addr)); 1651 1652 ap_sta_deauth_cb(hapd, sta); 1653 } 1654 1655 1656 static void handle_disassoc_cb(struct hostapd_data *hapd, 1657 const struct ieee80211_mgmt *mgmt, 1658 size_t len, int ok) 1659 { 1660 struct sta_info *sta; 1661 if (mgmt->da[0] & 0x01) 1662 return; 1663 sta = ap_get_sta(hapd, mgmt->da); 1664 if (!sta) { 1665 wpa_printf(MSG_DEBUG, "handle_disassoc_cb: STA " MACSTR 1666 " not found", MAC2STR(mgmt->da)); 1667 return; 1668 } 1669 if (ok) 1670 wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged disassoc", 1671 MAC2STR(sta->addr)); 1672 else 1673 wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge " 1674 "disassoc", MAC2STR(sta->addr)); 1675 1676 ap_sta_disassoc_cb(hapd, sta); 1677 } 1678 1679 1680 /** 1681 * ieee802_11_mgmt_cb - Process management frame TX status callback 1682 * @hapd: hostapd BSS data structure (the BSS from which the management frame 1683 * was sent from) 1684 * @buf: management frame data (starting from IEEE 802.11 header) 1685 * @len: length of frame data in octets 1686 * @stype: management frame subtype from frame control field 1687 * @ok: Whether the frame was ACK'ed 1688 */ 1689 void ieee802_11_mgmt_cb(struct hostapd_data *hapd, const u8 *buf, size_t len, 1690 u16 stype, int ok) 1691 { 1692 const struct ieee80211_mgmt *mgmt; 1693 mgmt = (const struct ieee80211_mgmt *) buf; 1694 1695 switch (stype) { 1696 case WLAN_FC_STYPE_AUTH: 1697 wpa_printf(MSG_DEBUG, "mgmt::auth cb"); 1698 handle_auth_cb(hapd, mgmt, len, ok); 1699 break; 1700 case WLAN_FC_STYPE_ASSOC_RESP: 1701 wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb"); 1702 handle_assoc_cb(hapd, mgmt, len, 0, ok); 1703 break; 1704 case WLAN_FC_STYPE_REASSOC_RESP: 1705 wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb"); 1706 handle_assoc_cb(hapd, mgmt, len, 1, ok); 1707 break; 1708 case WLAN_FC_STYPE_PROBE_RESP: 1709 wpa_printf(MSG_EXCESSIVE, "mgmt::proberesp cb"); 1710 break; 1711 case WLAN_FC_STYPE_DEAUTH: 1712 wpa_printf(MSG_DEBUG, "mgmt::deauth cb"); 1713 handle_deauth_cb(hapd, mgmt, len, ok); 1714 break; 1715 case WLAN_FC_STYPE_DISASSOC: 1716 wpa_printf(MSG_DEBUG, "mgmt::disassoc cb"); 1717 handle_disassoc_cb(hapd, mgmt, len, ok); 1718 break; 1719 case WLAN_FC_STYPE_ACTION: 1720 wpa_printf(MSG_DEBUG, "mgmt::action cb"); 1721 break; 1722 default: 1723 printf("unknown mgmt cb frame subtype %d\n", stype); 1724 break; 1725 } 1726 } 1727 1728 1729 int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen) 1730 { 1731 /* TODO */ 1732 return 0; 1733 } 1734 1735 1736 int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta, 1737 char *buf, size_t buflen) 1738 { 1739 /* TODO */ 1740 return 0; 1741 } 1742 1743 1744 void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr, 1745 const u8 *buf, size_t len, int ack) 1746 { 1747 struct sta_info *sta; 1748 struct hostapd_iface *iface = hapd->iface; 1749 1750 sta = ap_get_sta(hapd, addr); 1751 if (sta == NULL && iface->num_bss > 1) { 1752 size_t j; 1753 for (j = 0; j < iface->num_bss; j++) { 1754 hapd = iface->bss[j]; 1755 sta = ap_get_sta(hapd, addr); 1756 if (sta) 1757 break; 1758 } 1759 } 1760 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) 1761 return; 1762 if (sta->flags & WLAN_STA_PENDING_POLL) { 1763 wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending " 1764 "activity poll", MAC2STR(sta->addr), 1765 ack ? "ACKed" : "did not ACK"); 1766 if (ack) 1767 sta->flags &= ~WLAN_STA_PENDING_POLL; 1768 } 1769 1770 ieee802_1x_tx_status(hapd, sta, buf, len, ack); 1771 } 1772 1773 1774 void hostapd_eapol_tx_status(struct hostapd_data *hapd, const u8 *dst, 1775 const u8 *data, size_t len, int ack) 1776 { 1777 struct sta_info *sta; 1778 struct hostapd_iface *iface = hapd->iface; 1779 1780 sta = ap_get_sta(hapd, dst); 1781 if (sta == NULL && iface->num_bss > 1) { 1782 size_t j; 1783 for (j = 0; j < iface->num_bss; j++) { 1784 hapd = iface->bss[j]; 1785 sta = ap_get_sta(hapd, dst); 1786 if (sta) 1787 break; 1788 } 1789 } 1790 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) { 1791 wpa_printf(MSG_DEBUG, "Ignore TX status for Data frame to STA " 1792 MACSTR " that is not currently associated", 1793 MAC2STR(dst)); 1794 return; 1795 } 1796 1797 ieee802_1x_eapol_tx_status(hapd, sta, data, len, ack); 1798 } 1799 1800 1801 void hostapd_client_poll_ok(struct hostapd_data *hapd, const u8 *addr) 1802 { 1803 struct sta_info *sta; 1804 struct hostapd_iface *iface = hapd->iface; 1805 1806 sta = ap_get_sta(hapd, addr); 1807 if (sta == NULL && iface->num_bss > 1) { 1808 size_t j; 1809 for (j = 0; j < iface->num_bss; j++) { 1810 hapd = iface->bss[j]; 1811 sta = ap_get_sta(hapd, addr); 1812 if (sta) 1813 break; 1814 } 1815 } 1816 if (sta == NULL) 1817 return; 1818 if (!(sta->flags & WLAN_STA_PENDING_POLL)) 1819 return; 1820 1821 wpa_printf(MSG_DEBUG, "STA " MACSTR " ACKed pending " 1822 "activity poll", MAC2STR(sta->addr)); 1823 sta->flags &= ~WLAN_STA_PENDING_POLL; 1824 } 1825 1826 1827 void ieee802_11_rx_from_unknown(struct hostapd_data *hapd, const u8 *src, 1828 int wds) 1829 { 1830 struct sta_info *sta; 1831 1832 sta = ap_get_sta(hapd, src); 1833 if (sta && (sta->flags & WLAN_STA_ASSOC)) { 1834 if (!hapd->conf->wds_sta) 1835 return; 1836 1837 if (wds && !(sta->flags & WLAN_STA_WDS)) { 1838 wpa_printf(MSG_DEBUG, "Enable 4-address WDS mode for " 1839 "STA " MACSTR " (aid %u)", 1840 MAC2STR(sta->addr), sta->aid); 1841 sta->flags |= WLAN_STA_WDS; 1842 hostapd_set_wds_sta(hapd, sta->addr, sta->aid, 1); 1843 } 1844 return; 1845 } 1846 1847 wpa_printf(MSG_DEBUG, "Data/PS-poll frame from not associated STA " 1848 MACSTR, MAC2STR(src)); 1849 if (src[0] & 0x01) { 1850 /* Broadcast bit set in SA?! Ignore the frame silently. */ 1851 return; 1852 } 1853 1854 if (sta && (sta->flags & WLAN_STA_ASSOC_REQ_OK)) { 1855 wpa_printf(MSG_DEBUG, "Association Response to the STA has " 1856 "already been sent, but no TX status yet known - " 1857 "ignore Class 3 frame issue with " MACSTR, 1858 MAC2STR(src)); 1859 return; 1860 } 1861 1862 if (sta && (sta->flags & WLAN_STA_AUTH)) 1863 hostapd_drv_sta_disassoc( 1864 hapd, src, 1865 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); 1866 else 1867 hostapd_drv_sta_deauth( 1868 hapd, src, 1869 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); 1870 } 1871 1872 1873 #endif /* CONFIG_NATIVE_WINDOWS */ 1874
