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; 314 315 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) { 316 printf("handle_auth - too short payload (len=%lu)\n", 317 (unsigned long) len); 318 return; 319 } 320 321 auth_alg = le_to_host16(mgmt->u.auth.auth_alg); 322 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction); 323 status_code = le_to_host16(mgmt->u.auth.status_code); 324 fc = le_to_host16(mgmt->frame_control); 325 326 if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) + 327 2 + WLAN_AUTH_CHALLENGE_LEN && 328 mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE && 329 mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN) 330 challenge = &mgmt->u.auth.variable[2]; 331 332 wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d " 333 "auth_transaction=%d status_code=%d wep=%d%s", 334 MAC2STR(mgmt->sa), auth_alg, auth_transaction, 335 status_code, !!(fc & WLAN_FC_ISWEP), 336 challenge ? " challenge" : ""); 337 338 if (hapd->tkip_countermeasures) { 339 resp = WLAN_REASON_MICHAEL_MIC_FAILURE; 340 goto fail; 341 } 342 343 if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) && 344 auth_alg == WLAN_AUTH_OPEN) || 345 #ifdef CONFIG_IEEE80211R 346 (hapd->conf->wpa && wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt) && 347 auth_alg == WLAN_AUTH_FT) || 348 #endif /* CONFIG_IEEE80211R */ 349 ((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) && 350 auth_alg == WLAN_AUTH_SHARED_KEY))) { 351 printf("Unsupported authentication algorithm (%d)\n", 352 auth_alg); 353 resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG; 354 goto fail; 355 } 356 357 if (!(auth_transaction == 1 || 358 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) { 359 printf("Unknown authentication transaction number (%d)\n", 360 auth_transaction); 361 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION; 362 goto fail; 363 } 364 365 if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) { 366 printf("Station " MACSTR " not allowed to authenticate.\n", 367 MAC2STR(mgmt->sa)); 368 resp = WLAN_STATUS_UNSPECIFIED_FAILURE; 369 goto fail; 370 } 371 372 res = hostapd_allowed_address(hapd, mgmt->sa, (u8 *) mgmt, len, 373 &session_timeout, 374 &acct_interim_interval, &vlan_id, 375 psk, &has_psk); 376 377 if (res == HOSTAPD_ACL_REJECT) { 378 printf("Station " MACSTR " not allowed to authenticate.\n", 379 MAC2STR(mgmt->sa)); 380 resp = WLAN_STATUS_UNSPECIFIED_FAILURE; 381 goto fail; 382 } 383 if (res == HOSTAPD_ACL_PENDING) { 384 wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR 385 " waiting for an external authentication", 386 MAC2STR(mgmt->sa)); 387 /* Authentication code will re-send the authentication frame 388 * after it has received (and cached) information from the 389 * external source. */ 390 return; 391 } 392 393 sta = ap_sta_add(hapd, mgmt->sa); 394 if (!sta) { 395 resp = WLAN_STATUS_UNSPECIFIED_FAILURE; 396 goto fail; 397 } 398 399 if (vlan_id > 0) { 400 if (hostapd_get_vlan_id_ifname(hapd->conf->vlan, 401 vlan_id) == NULL) { 402 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS, 403 HOSTAPD_LEVEL_INFO, "Invalid VLAN ID " 404 "%d received from RADIUS server", 405 vlan_id); 406 resp = WLAN_STATUS_UNSPECIFIED_FAILURE; 407 goto fail; 408 } 409 sta->vlan_id = vlan_id; 410 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS, 411 HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id); 412 } 413 414 if (has_psk && hapd->conf->wpa_psk_radius != PSK_RADIUS_IGNORED) { 415 os_free(sta->psk); 416 sta->psk = os_malloc(PMK_LEN); 417 if (sta->psk) 418 os_memcpy(sta->psk, psk, PMK_LEN); 419 } else { 420 os_free(sta->psk); 421 sta->psk = NULL; 422 } 423 424 sta->flags &= ~WLAN_STA_PREAUTH; 425 ieee802_1x_notify_pre_auth(sta->eapol_sm, 0); 426 427 if (hapd->conf->acct_interim_interval == 0 && acct_interim_interval) 428 sta->acct_interim_interval = acct_interim_interval; 429 if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT) 430 ap_sta_session_timeout(hapd, sta, session_timeout); 431 else 432 ap_sta_no_session_timeout(hapd, sta); 433 434 switch (auth_alg) { 435 case WLAN_AUTH_OPEN: 436 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 437 HOSTAPD_LEVEL_DEBUG, 438 "authentication OK (open system)"); 439 #ifdef IEEE80211_REQUIRE_AUTH_ACK 440 /* Station will be marked authenticated if it ACKs the 441 * authentication reply. */ 442 #else 443 sta->flags |= WLAN_STA_AUTH; 444 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH); 445 sta->auth_alg = WLAN_AUTH_OPEN; 446 mlme_authenticate_indication(hapd, sta); 447 #endif 448 break; 449 case WLAN_AUTH_SHARED_KEY: 450 resp = auth_shared_key(hapd, sta, auth_transaction, challenge, 451 fc & WLAN_FC_ISWEP); 452 sta->auth_alg = WLAN_AUTH_SHARED_KEY; 453 mlme_authenticate_indication(hapd, sta); 454 if (sta->challenge && auth_transaction == 1) { 455 resp_ies[0] = WLAN_EID_CHALLENGE; 456 resp_ies[1] = WLAN_AUTH_CHALLENGE_LEN; 457 os_memcpy(resp_ies + 2, sta->challenge, 458 WLAN_AUTH_CHALLENGE_LEN); 459 resp_ies_len = 2 + WLAN_AUTH_CHALLENGE_LEN; 460 } 461 break; 462 #ifdef CONFIG_IEEE80211R 463 case WLAN_AUTH_FT: 464 sta->auth_alg = WLAN_AUTH_FT; 465 if (sta->wpa_sm == NULL) 466 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, 467 sta->addr); 468 if (sta->wpa_sm == NULL) { 469 wpa_printf(MSG_DEBUG, "FT: Failed to initialize WPA " 470 "state machine"); 471 resp = WLAN_STATUS_UNSPECIFIED_FAILURE; 472 goto fail; 473 } 474 wpa_ft_process_auth(sta->wpa_sm, mgmt->bssid, 475 auth_transaction, mgmt->u.auth.variable, 476 len - IEEE80211_HDRLEN - 477 sizeof(mgmt->u.auth), 478 handle_auth_ft_finish, hapd); 479 /* handle_auth_ft_finish() callback will complete auth. */ 480 return; 481 #endif /* CONFIG_IEEE80211R */ 482 } 483 484 fail: 485 send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg, 486 auth_transaction + 1, resp, resp_ies, resp_ies_len); 487 } 488 489 490 static int hostapd_get_aid(struct hostapd_data *hapd, struct sta_info *sta) 491 { 492 int i, j = 32, aid; 493 494 /* get a unique AID */ 495 if (sta->aid > 0) { 496 wpa_printf(MSG_DEBUG, " old AID %d", sta->aid); 497 return 0; 498 } 499 500 for (i = 0; i < AID_WORDS; i++) { 501 if (hapd->sta_aid[i] == (u32) -1) 502 continue; 503 for (j = 0; j < 32; j++) { 504 if (!(hapd->sta_aid[i] & BIT(j))) 505 break; 506 } 507 if (j < 32) 508 break; 509 } 510 if (j == 32) 511 return -1; 512 aid = i * 32 + j + 1; 513 if (aid > 2007) 514 return -1; 515 516 sta->aid = aid; 517 hapd->sta_aid[i] |= BIT(j); 518 wpa_printf(MSG_DEBUG, " new AID %d", sta->aid); 519 return 0; 520 } 521 522 523 static u16 check_ssid(struct hostapd_data *hapd, struct sta_info *sta, 524 const u8 *ssid_ie, size_t ssid_ie_len) 525 { 526 if (ssid_ie == NULL) 527 return WLAN_STATUS_UNSPECIFIED_FAILURE; 528 529 if (ssid_ie_len != hapd->conf->ssid.ssid_len || 530 os_memcmp(ssid_ie, hapd->conf->ssid.ssid, ssid_ie_len) != 0) { 531 char ssid_txt[33]; 532 ieee802_11_print_ssid(ssid_txt, ssid_ie, ssid_ie_len); 533 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 534 HOSTAPD_LEVEL_INFO, 535 "Station tried to associate with unknown SSID " 536 "'%s'", ssid_txt); 537 return WLAN_STATUS_UNSPECIFIED_FAILURE; 538 } 539 540 return WLAN_STATUS_SUCCESS; 541 } 542 543 544 static u16 check_wmm(struct hostapd_data *hapd, struct sta_info *sta, 545 const u8 *wmm_ie, size_t wmm_ie_len) 546 { 547 sta->flags &= ~WLAN_STA_WMM; 548 sta->qosinfo = 0; 549 if (wmm_ie && hapd->conf->wmm_enabled) { 550 struct wmm_information_element *wmm; 551 552 if (!hostapd_eid_wmm_valid(hapd, wmm_ie, wmm_ie_len)) { 553 hostapd_logger(hapd, sta->addr, 554 HOSTAPD_MODULE_WPA, 555 HOSTAPD_LEVEL_DEBUG, 556 "invalid WMM element in association " 557 "request"); 558 return WLAN_STATUS_UNSPECIFIED_FAILURE; 559 } 560 561 sta->flags |= WLAN_STA_WMM; 562 wmm = (struct wmm_information_element *) wmm_ie; 563 sta->qosinfo = wmm->qos_info; 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(hapd, sta, elems.ht_capabilities, 639 elems.ht_capabilities_len); 640 if (resp != WLAN_STATUS_SUCCESS) 641 return resp; 642 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht && 643 !(sta->flags & WLAN_STA_HT)) { 644 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 645 HOSTAPD_LEVEL_INFO, "Station does not support " 646 "mandatory HT PHY - reject association"); 647 return WLAN_STATUS_ASSOC_DENIED_NO_HT; 648 } 649 #endif /* CONFIG_IEEE80211N */ 650 651 if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) { 652 wpa_ie = elems.rsn_ie; 653 wpa_ie_len = elems.rsn_ie_len; 654 } else if ((hapd->conf->wpa & WPA_PROTO_WPA) && 655 elems.wpa_ie) { 656 wpa_ie = elems.wpa_ie; 657 wpa_ie_len = elems.wpa_ie_len; 658 } else { 659 wpa_ie = NULL; 660 wpa_ie_len = 0; 661 } 662 663 #ifdef CONFIG_WPS 664 sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS | WLAN_STA_WPS2); 665 if (hapd->conf->wps_state && elems.wps_ie) { 666 wpa_printf(MSG_DEBUG, "STA included WPS IE in (Re)Association " 667 "Request - assume WPS is used"); 668 sta->flags |= WLAN_STA_WPS; 669 wpabuf_free(sta->wps_ie); 670 sta->wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, 671 WPS_IE_VENDOR_TYPE); 672 if (sta->wps_ie && wps_is_20(sta->wps_ie)) { 673 wpa_printf(MSG_DEBUG, "WPS: STA supports WPS 2.0"); 674 sta->flags |= WLAN_STA_WPS2; 675 } 676 wpa_ie = NULL; 677 wpa_ie_len = 0; 678 if (sta->wps_ie && wps_validate_assoc_req(sta->wps_ie) < 0) { 679 wpa_printf(MSG_DEBUG, "WPS: Invalid WPS IE in " 680 "(Re)Association Request - reject"); 681 return WLAN_STATUS_INVALID_IE; 682 } 683 } else if (hapd->conf->wps_state && wpa_ie == NULL) { 684 wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE in " 685 "(Re)Association Request - possible WPS use"); 686 sta->flags |= WLAN_STA_MAYBE_WPS; 687 } else 688 #endif /* CONFIG_WPS */ 689 if (hapd->conf->wpa && wpa_ie == NULL) { 690 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 691 HOSTAPD_LEVEL_INFO, 692 "No WPA/RSN IE in association request"); 693 return WLAN_STATUS_INVALID_IE; 694 } 695 696 if (hapd->conf->wpa && wpa_ie) { 697 int res; 698 wpa_ie -= 2; 699 wpa_ie_len += 2; 700 if (sta->wpa_sm == NULL) 701 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, 702 sta->addr); 703 if (sta->wpa_sm == NULL) { 704 wpa_printf(MSG_WARNING, "Failed to initialize WPA " 705 "state machine"); 706 return WLAN_STATUS_UNSPECIFIED_FAILURE; 707 } 708 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm, 709 wpa_ie, wpa_ie_len, 710 elems.mdie, elems.mdie_len); 711 if (res == WPA_INVALID_GROUP) 712 resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID; 713 else if (res == WPA_INVALID_PAIRWISE) 714 resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID; 715 else if (res == WPA_INVALID_AKMP) 716 resp = WLAN_STATUS_AKMP_NOT_VALID; 717 else if (res == WPA_ALLOC_FAIL) 718 resp = WLAN_STATUS_UNSPECIFIED_FAILURE; 719 #ifdef CONFIG_IEEE80211W 720 else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION) 721 resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION; 722 else if (res == WPA_INVALID_MGMT_GROUP_CIPHER) 723 resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION; 724 #endif /* CONFIG_IEEE80211W */ 725 else if (res == WPA_INVALID_MDIE) 726 resp = WLAN_STATUS_INVALID_MDIE; 727 else if (res != WPA_IE_OK) 728 resp = WLAN_STATUS_INVALID_IE; 729 if (resp != WLAN_STATUS_SUCCESS) 730 return resp; 731 #ifdef CONFIG_IEEE80211W 732 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out && 733 sta->sa_query_count > 0) 734 ap_check_sa_query_timeout(hapd, sta); 735 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out && 736 (!reassoc || sta->auth_alg != WLAN_AUTH_FT)) { 737 /* 738 * STA has already been associated with MFP and SA 739 * Query timeout has not been reached. Reject the 740 * association attempt temporarily and start SA Query, 741 * if one is not pending. 742 */ 743 744 if (sta->sa_query_count == 0) 745 ap_sta_start_sa_query(hapd, sta); 746 747 return WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY; 748 } 749 750 if (wpa_auth_uses_mfp(sta->wpa_sm)) 751 sta->flags |= WLAN_STA_MFP; 752 else 753 sta->flags &= ~WLAN_STA_MFP; 754 #endif /* CONFIG_IEEE80211W */ 755 756 #ifdef CONFIG_IEEE80211R 757 if (sta->auth_alg == WLAN_AUTH_FT) { 758 if (!reassoc) { 759 wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried " 760 "to use association (not " 761 "re-association) with FT auth_alg", 762 MAC2STR(sta->addr)); 763 return WLAN_STATUS_UNSPECIFIED_FAILURE; 764 } 765 766 resp = wpa_ft_validate_reassoc(sta->wpa_sm, ies, 767 ies_len); 768 if (resp != WLAN_STATUS_SUCCESS) 769 return resp; 770 } 771 #endif /* CONFIG_IEEE80211R */ 772 773 #ifdef CONFIG_IEEE80211N 774 if ((sta->flags & WLAN_STA_HT) && 775 wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) { 776 hostapd_logger(hapd, sta->addr, 777 HOSTAPD_MODULE_IEEE80211, 778 HOSTAPD_LEVEL_INFO, 779 "Station tried to use TKIP with HT " 780 "association"); 781 return WLAN_STATUS_CIPHER_REJECTED_PER_POLICY; 782 } 783 #endif /* CONFIG_IEEE80211N */ 784 } else 785 wpa_auth_sta_no_wpa(sta->wpa_sm); 786 787 #ifdef CONFIG_P2P 788 if (elems.p2p) { 789 wpabuf_free(sta->p2p_ie); 790 sta->p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, 791 P2P_IE_VENDOR_TYPE); 792 793 } else { 794 wpabuf_free(sta->p2p_ie); 795 sta->p2p_ie = NULL; 796 } 797 798 p2p_group_notif_assoc(hapd->p2p_group, sta->addr, ies, ies_len); 799 #endif /* CONFIG_P2P */ 800 801 return WLAN_STATUS_SUCCESS; 802 } 803 804 805 static void send_deauth(struct hostapd_data *hapd, const u8 *addr, 806 u16 reason_code) 807 { 808 int send_len; 809 struct ieee80211_mgmt reply; 810 811 os_memset(&reply, 0, sizeof(reply)); 812 reply.frame_control = 813 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_DEAUTH); 814 os_memcpy(reply.da, addr, ETH_ALEN); 815 os_memcpy(reply.sa, hapd->own_addr, ETH_ALEN); 816 os_memcpy(reply.bssid, hapd->own_addr, ETH_ALEN); 817 818 send_len = IEEE80211_HDRLEN + sizeof(reply.u.deauth); 819 reply.u.deauth.reason_code = host_to_le16(reason_code); 820 821 if (hostapd_drv_send_mlme(hapd, &reply, send_len, 0) < 0) 822 wpa_printf(MSG_INFO, "Failed to send deauth: %s", 823 strerror(errno)); 824 } 825 826 827 static void send_assoc_resp(struct hostapd_data *hapd, struct sta_info *sta, 828 u16 status_code, int reassoc, const u8 *ies, 829 size_t ies_len) 830 { 831 int send_len; 832 u8 buf[sizeof(struct ieee80211_mgmt) + 1024]; 833 struct ieee80211_mgmt *reply; 834 u8 *p; 835 836 os_memset(buf, 0, sizeof(buf)); 837 reply = (struct ieee80211_mgmt *) buf; 838 reply->frame_control = 839 IEEE80211_FC(WLAN_FC_TYPE_MGMT, 840 (reassoc ? WLAN_FC_STYPE_REASSOC_RESP : 841 WLAN_FC_STYPE_ASSOC_RESP)); 842 os_memcpy(reply->da, sta->addr, ETH_ALEN); 843 os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN); 844 os_memcpy(reply->bssid, hapd->own_addr, ETH_ALEN); 845 846 send_len = IEEE80211_HDRLEN; 847 send_len += sizeof(reply->u.assoc_resp); 848 reply->u.assoc_resp.capab_info = 849 host_to_le16(hostapd_own_capab_info(hapd, sta, 0)); 850 reply->u.assoc_resp.status_code = host_to_le16(status_code); 851 reply->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0) 852 | BIT(14) | BIT(15)); 853 /* Supported rates */ 854 p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable); 855 /* Extended supported rates */ 856 p = hostapd_eid_ext_supp_rates(hapd, p); 857 858 #ifdef CONFIG_IEEE80211R 859 if (status_code == WLAN_STATUS_SUCCESS) { 860 /* IEEE 802.11r: Mobility Domain Information, Fast BSS 861 * Transition Information, RSN, [RIC Response] */ 862 p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p, 863 buf + sizeof(buf) - p, 864 sta->auth_alg, ies, ies_len); 865 } 866 #endif /* CONFIG_IEEE80211R */ 867 868 #ifdef CONFIG_IEEE80211W 869 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY) 870 p = hostapd_eid_assoc_comeback_time(hapd, sta, p); 871 #endif /* CONFIG_IEEE80211W */ 872 873 #ifdef CONFIG_IEEE80211N 874 p = hostapd_eid_ht_capabilities(hapd, p); 875 p = hostapd_eid_ht_operation(hapd, p); 876 #endif /* CONFIG_IEEE80211N */ 877 878 p = hostapd_eid_ext_capab(hapd, p); 879 880 if (sta->flags & WLAN_STA_WMM) 881 p = hostapd_eid_wmm(hapd, p); 882 883 #ifdef CONFIG_WPS 884 if ((sta->flags & WLAN_STA_WPS) || 885 ((sta->flags & WLAN_STA_MAYBE_WPS) && hapd->conf->wpa)) { 886 struct wpabuf *wps = wps_build_assoc_resp_ie(); 887 if (wps) { 888 os_memcpy(p, wpabuf_head(wps), wpabuf_len(wps)); 889 p += wpabuf_len(wps); 890 wpabuf_free(wps); 891 } 892 } 893 #endif /* CONFIG_WPS */ 894 895 #ifdef CONFIG_P2P 896 if (sta->p2p_ie) { 897 struct wpabuf *p2p_resp_ie; 898 enum p2p_status_code status; 899 switch (status_code) { 900 case WLAN_STATUS_SUCCESS: 901 status = P2P_SC_SUCCESS; 902 break; 903 case WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA: 904 status = P2P_SC_FAIL_LIMIT_REACHED; 905 break; 906 default: 907 status = P2P_SC_FAIL_INVALID_PARAMS; 908 break; 909 } 910 p2p_resp_ie = p2p_group_assoc_resp_ie(hapd->p2p_group, status); 911 if (p2p_resp_ie) { 912 os_memcpy(p, wpabuf_head(p2p_resp_ie), 913 wpabuf_len(p2p_resp_ie)); 914 p += wpabuf_len(p2p_resp_ie); 915 wpabuf_free(p2p_resp_ie); 916 } 917 } 918 #endif /* CONFIG_P2P */ 919 920 #ifdef CONFIG_P2P_MANAGER 921 if (hapd->conf->p2p & P2P_MANAGE) 922 p = hostapd_eid_p2p_manage(hapd, p); 923 #endif /* CONFIG_P2P_MANAGER */ 924 925 send_len += p - reply->u.assoc_resp.variable; 926 927 if (hostapd_drv_send_mlme(hapd, reply, send_len, 0) < 0) 928 wpa_printf(MSG_INFO, "Failed to send assoc resp: %s", 929 strerror(errno)); 930 } 931 932 933 static void handle_assoc(struct hostapd_data *hapd, 934 const struct ieee80211_mgmt *mgmt, size_t len, 935 int reassoc) 936 { 937 u16 capab_info, listen_interval; 938 u16 resp = WLAN_STATUS_SUCCESS; 939 const u8 *pos; 940 int left, i; 941 struct sta_info *sta; 942 943 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) : 944 sizeof(mgmt->u.assoc_req))) { 945 printf("handle_assoc(reassoc=%d) - too short payload (len=%lu)" 946 "\n", reassoc, (unsigned long) len); 947 return; 948 } 949 950 if (reassoc) { 951 capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info); 952 listen_interval = le_to_host16( 953 mgmt->u.reassoc_req.listen_interval); 954 wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR 955 " capab_info=0x%02x listen_interval=%d current_ap=" 956 MACSTR, 957 MAC2STR(mgmt->sa), capab_info, listen_interval, 958 MAC2STR(mgmt->u.reassoc_req.current_ap)); 959 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req)); 960 pos = mgmt->u.reassoc_req.variable; 961 } else { 962 capab_info = le_to_host16(mgmt->u.assoc_req.capab_info); 963 listen_interval = le_to_host16( 964 mgmt->u.assoc_req.listen_interval); 965 wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR 966 " capab_info=0x%02x listen_interval=%d", 967 MAC2STR(mgmt->sa), capab_info, listen_interval); 968 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req)); 969 pos = mgmt->u.assoc_req.variable; 970 } 971 972 sta = ap_get_sta(hapd, mgmt->sa); 973 #ifdef CONFIG_IEEE80211R 974 if (sta && sta->auth_alg == WLAN_AUTH_FT && 975 (sta->flags & WLAN_STA_AUTH) == 0) { 976 wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate " 977 "prior to authentication since it is using " 978 "over-the-DS FT", MAC2STR(mgmt->sa)); 979 } else 980 #endif /* CONFIG_IEEE80211R */ 981 if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) { 982 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, 983 HOSTAPD_LEVEL_INFO, "Station tried to " 984 "associate before authentication " 985 "(aid=%d flags=0x%x)", 986 sta ? sta->aid : -1, 987 sta ? sta->flags : 0); 988 send_deauth(hapd, mgmt->sa, 989 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA); 990 return; 991 } 992 993 if (hapd->tkip_countermeasures) { 994 resp = WLAN_REASON_MICHAEL_MIC_FAILURE; 995 goto fail; 996 } 997 998 if (listen_interval > hapd->conf->max_listen_interval) { 999 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, 1000 HOSTAPD_LEVEL_DEBUG, 1001 "Too large Listen Interval (%d)", 1002 listen_interval); 1003 resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE; 1004 goto fail; 1005 } 1006 1007 /* followed by SSID and Supported rates; and HT capabilities if 802.11n 1008 * is used */ 1009 resp = check_assoc_ies(hapd, sta, pos, left, reassoc); 1010 if (resp != WLAN_STATUS_SUCCESS) 1011 goto fail; 1012 1013 if (hostapd_get_aid(hapd, sta) < 0) { 1014 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, 1015 HOSTAPD_LEVEL_INFO, "No room for more AIDs"); 1016 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA; 1017 goto fail; 1018 } 1019 1020 sta->capability = capab_info; 1021 sta->listen_interval = listen_interval; 1022 1023 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G) 1024 sta->flags |= WLAN_STA_NONERP; 1025 for (i = 0; i < sta->supported_rates_len; i++) { 1026 if ((sta->supported_rates[i] & 0x7f) > 22) { 1027 sta->flags &= ~WLAN_STA_NONERP; 1028 break; 1029 } 1030 } 1031 if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) { 1032 sta->nonerp_set = 1; 1033 hapd->iface->num_sta_non_erp++; 1034 if (hapd->iface->num_sta_non_erp == 1) 1035 ieee802_11_set_beacons(hapd->iface); 1036 } 1037 1038 if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) && 1039 !sta->no_short_slot_time_set) { 1040 sta->no_short_slot_time_set = 1; 1041 hapd->iface->num_sta_no_short_slot_time++; 1042 if (hapd->iface->current_mode->mode == 1043 HOSTAPD_MODE_IEEE80211G && 1044 hapd->iface->num_sta_no_short_slot_time == 1) 1045 ieee802_11_set_beacons(hapd->iface); 1046 } 1047 1048 if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) 1049 sta->flags |= WLAN_STA_SHORT_PREAMBLE; 1050 else 1051 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE; 1052 1053 if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) && 1054 !sta->no_short_preamble_set) { 1055 sta->no_short_preamble_set = 1; 1056 hapd->iface->num_sta_no_short_preamble++; 1057 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G 1058 && hapd->iface->num_sta_no_short_preamble == 1) 1059 ieee802_11_set_beacons(hapd->iface); 1060 } 1061 1062 #ifdef CONFIG_IEEE80211N 1063 update_ht_state(hapd, sta); 1064 #endif /* CONFIG_IEEE80211N */ 1065 1066 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 1067 HOSTAPD_LEVEL_DEBUG, 1068 "association OK (aid %d)", sta->aid); 1069 /* Station will be marked associated, after it acknowledges AssocResp 1070 */ 1071 sta->flags |= WLAN_STA_ASSOC_REQ_OK; 1072 1073 #ifdef CONFIG_IEEE80211W 1074 if ((sta->flags & WLAN_STA_MFP) && sta->sa_query_timed_out) { 1075 wpa_printf(MSG_DEBUG, "Allowing %sassociation after timed out " 1076 "SA Query procedure", reassoc ? "re" : ""); 1077 /* TODO: Send a protected Disassociate frame to the STA using 1078 * the old key and Reason Code "Previous Authentication no 1079 * longer valid". Make sure this is only sent protected since 1080 * unprotected frame would be received by the STA that is now 1081 * trying to associate. 1082 */ 1083 } 1084 #endif /* CONFIG_IEEE80211W */ 1085 1086 if (reassoc) { 1087 os_memcpy(sta->previous_ap, mgmt->u.reassoc_req.current_ap, 1088 ETH_ALEN); 1089 } 1090 1091 if (sta->last_assoc_req) 1092 os_free(sta->last_assoc_req); 1093 sta->last_assoc_req = os_malloc(len); 1094 if (sta->last_assoc_req) 1095 os_memcpy(sta->last_assoc_req, mgmt, len); 1096 1097 /* Make sure that the previously registered inactivity timer will not 1098 * remove the STA immediately. */ 1099 sta->timeout_next = STA_NULLFUNC; 1100 1101 fail: 1102 send_assoc_resp(hapd, sta, resp, reassoc, pos, left); 1103 } 1104 1105 1106 static void handle_disassoc(struct hostapd_data *hapd, 1107 const struct ieee80211_mgmt *mgmt, size_t len) 1108 { 1109 struct sta_info *sta; 1110 1111 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) { 1112 printf("handle_disassoc - too short payload (len=%lu)\n", 1113 (unsigned long) len); 1114 return; 1115 } 1116 1117 wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d", 1118 MAC2STR(mgmt->sa), 1119 le_to_host16(mgmt->u.disassoc.reason_code)); 1120 1121 sta = ap_get_sta(hapd, mgmt->sa); 1122 if (sta == NULL) { 1123 printf("Station " MACSTR " trying to disassociate, but it " 1124 "is not associated.\n", MAC2STR(mgmt->sa)); 1125 return; 1126 } 1127 1128 ap_sta_set_authorized(hapd, sta, 0); 1129 sta->flags &= ~(WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK); 1130 wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC); 1131 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 1132 HOSTAPD_LEVEL_INFO, "disassociated"); 1133 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST; 1134 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0); 1135 /* Stop Accounting and IEEE 802.1X sessions, but leave the STA 1136 * authenticated. */ 1137 accounting_sta_stop(hapd, sta); 1138 ieee802_1x_free_station(sta); 1139 hostapd_drv_sta_remove(hapd, sta->addr); 1140 1141 if (sta->timeout_next == STA_NULLFUNC || 1142 sta->timeout_next == STA_DISASSOC) { 1143 sta->timeout_next = STA_DEAUTH; 1144 eloop_cancel_timeout(ap_handle_timer, hapd, sta); 1145 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer, 1146 hapd, sta); 1147 } 1148 1149 mlme_disassociate_indication( 1150 hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code)); 1151 } 1152 1153 1154 static void handle_deauth(struct hostapd_data *hapd, 1155 const struct ieee80211_mgmt *mgmt, size_t len) 1156 { 1157 struct sta_info *sta; 1158 1159 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) { 1160 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "handle_deauth - too short " 1161 "payload (len=%lu)", (unsigned long) len); 1162 return; 1163 } 1164 1165 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "deauthentication: STA=" MACSTR 1166 " reason_code=%d", 1167 MAC2STR(mgmt->sa), le_to_host16(mgmt->u.deauth.reason_code)); 1168 1169 sta = ap_get_sta(hapd, mgmt->sa); 1170 if (sta == NULL) { 1171 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR " trying " 1172 "to deauthenticate, but it is not authenticated", 1173 MAC2STR(mgmt->sa)); 1174 return; 1175 } 1176 1177 ap_sta_set_authorized(hapd, sta, 0); 1178 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC | 1179 WLAN_STA_ASSOC_REQ_OK); 1180 wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH); 1181 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 1182 HOSTAPD_LEVEL_DEBUG, "deauthenticated"); 1183 mlme_deauthenticate_indication( 1184 hapd, sta, le_to_host16(mgmt->u.deauth.reason_code)); 1185 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST; 1186 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0); 1187 ap_free_sta(hapd, sta); 1188 } 1189 1190 1191 static void handle_beacon(struct hostapd_data *hapd, 1192 const struct ieee80211_mgmt *mgmt, size_t len, 1193 struct hostapd_frame_info *fi) 1194 { 1195 struct ieee802_11_elems elems; 1196 1197 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) { 1198 printf("handle_beacon - too short payload (len=%lu)\n", 1199 (unsigned long) len); 1200 return; 1201 } 1202 1203 (void) ieee802_11_parse_elems(mgmt->u.beacon.variable, 1204 len - (IEEE80211_HDRLEN + 1205 sizeof(mgmt->u.beacon)), &elems, 1206 0); 1207 1208 ap_list_process_beacon(hapd->iface, mgmt, &elems, fi); 1209 } 1210 1211 1212 #ifdef CONFIG_IEEE80211W 1213 1214 static void hostapd_sa_query_action(struct hostapd_data *hapd, 1215 const struct ieee80211_mgmt *mgmt, 1216 size_t len) 1217 { 1218 const u8 *end; 1219 1220 end = mgmt->u.action.u.sa_query_resp.trans_id + 1221 WLAN_SA_QUERY_TR_ID_LEN; 1222 if (((u8 *) mgmt) + len < end) { 1223 wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short SA Query Action " 1224 "frame (len=%lu)", (unsigned long) len); 1225 return; 1226 } 1227 1228 ieee802_11_sa_query_action(hapd, mgmt->sa, 1229 mgmt->u.action.u.sa_query_resp.action, 1230 mgmt->u.action.u.sa_query_resp.trans_id); 1231 } 1232 1233 1234 static int robust_action_frame(u8 category) 1235 { 1236 return category != WLAN_ACTION_PUBLIC && 1237 category != WLAN_ACTION_HT; 1238 } 1239 #endif /* CONFIG_IEEE80211W */ 1240 1241 1242 static void handle_action(struct hostapd_data *hapd, 1243 const struct ieee80211_mgmt *mgmt, size_t len) 1244 { 1245 #if defined(CONFIG_IEEE80211W) || defined(CONFIG_IEEE80211R) 1246 struct sta_info *sta; 1247 sta = ap_get_sta(hapd, mgmt->sa); 1248 #endif /* CONFIG_IEEE80211W || CONFIG_IEEE80211R */ 1249 1250 if (len < IEEE80211_HDRLEN + 1) { 1251 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, 1252 HOSTAPD_LEVEL_DEBUG, 1253 "handle_action - too short payload (len=%lu)", 1254 (unsigned long) len); 1255 return; 1256 } 1257 1258 #ifdef CONFIG_IEEE80211W 1259 if (sta && (sta->flags & WLAN_STA_MFP) && 1260 !(mgmt->frame_control & host_to_le16(WLAN_FC_ISWEP) && 1261 robust_action_frame(mgmt->u.action.category))) { 1262 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, 1263 HOSTAPD_LEVEL_DEBUG, 1264 "Dropped unprotected Robust Action frame from " 1265 "an MFP STA"); 1266 return; 1267 } 1268 #endif /* CONFIG_IEEE80211W */ 1269 1270 switch (mgmt->u.action.category) { 1271 #ifdef CONFIG_IEEE80211R 1272 case WLAN_ACTION_FT: 1273 { 1274 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) { 1275 wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored FT Action " 1276 "frame from unassociated STA " MACSTR, 1277 MAC2STR(mgmt->sa)); 1278 return; 1279 } 1280 1281 if (wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action, 1282 len - IEEE80211_HDRLEN)) 1283 break; 1284 1285 return; 1286 } 1287 #endif /* CONFIG_IEEE80211R */ 1288 case WLAN_ACTION_WMM: 1289 hostapd_wmm_action(hapd, mgmt, len); 1290 return; 1291 #ifdef CONFIG_IEEE80211W 1292 case WLAN_ACTION_SA_QUERY: 1293 hostapd_sa_query_action(hapd, mgmt, len); 1294 return; 1295 #endif /* CONFIG_IEEE80211W */ 1296 case WLAN_ACTION_PUBLIC: 1297 if (hapd->public_action_cb) { 1298 hapd->public_action_cb(hapd->public_action_cb_ctx, 1299 (u8 *) mgmt, len, 1300 hapd->iface->freq); 1301 return; 1302 } 1303 break; 1304 case WLAN_ACTION_VENDOR_SPECIFIC: 1305 if (hapd->vendor_action_cb) { 1306 if (hapd->vendor_action_cb(hapd->vendor_action_cb_ctx, 1307 (u8 *) mgmt, len, 1308 hapd->iface->freq) == 0) 1309 return; 1310 } 1311 break; 1312 } 1313 1314 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, 1315 HOSTAPD_LEVEL_DEBUG, 1316 "handle_action - unknown action category %d or invalid " 1317 "frame", 1318 mgmt->u.action.category); 1319 if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) && 1320 !(mgmt->sa[0] & 0x01)) { 1321 struct ieee80211_mgmt *resp; 1322 1323 /* 1324 * IEEE 802.11-REVma/D9.0 - 7.3.1.11 1325 * Return the Action frame to the source without change 1326 * except that MSB of the Category set to 1. 1327 */ 1328 wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action " 1329 "frame back to sender"); 1330 resp = os_malloc(len); 1331 if (resp == NULL) 1332 return; 1333 os_memcpy(resp, mgmt, len); 1334 os_memcpy(resp->da, resp->sa, ETH_ALEN); 1335 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN); 1336 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN); 1337 resp->u.action.category |= 0x80; 1338 1339 hostapd_drv_send_mlme(hapd, resp, len, 0); 1340 os_free(resp); 1341 } 1342 } 1343 1344 1345 /** 1346 * ieee802_11_mgmt - process incoming IEEE 802.11 management frames 1347 * @hapd: hostapd BSS data structure (the BSS to which the management frame was 1348 * sent to) 1349 * @buf: management frame data (starting from IEEE 802.11 header) 1350 * @len: length of frame data in octets 1351 * @fi: meta data about received frame (signal level, etc.) 1352 * 1353 * Process all incoming IEEE 802.11 management frames. This will be called for 1354 * each frame received from the kernel driver through wlan#ap interface. In 1355 * addition, it can be called to re-inserted pending frames (e.g., when using 1356 * external RADIUS server as an MAC ACL). 1357 */ 1358 void ieee802_11_mgmt(struct hostapd_data *hapd, const u8 *buf, size_t len, 1359 struct hostapd_frame_info *fi) 1360 { 1361 struct ieee80211_mgmt *mgmt; 1362 int broadcast; 1363 u16 fc, stype; 1364 1365 if (len < 24) 1366 return; 1367 1368 mgmt = (struct ieee80211_mgmt *) buf; 1369 fc = le_to_host16(mgmt->frame_control); 1370 stype = WLAN_FC_GET_STYPE(fc); 1371 1372 if (stype == WLAN_FC_STYPE_BEACON) { 1373 handle_beacon(hapd, mgmt, len, fi); 1374 return; 1375 } 1376 1377 broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff && 1378 mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff && 1379 mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff; 1380 1381 if (!broadcast && 1382 #ifdef CONFIG_P2P 1383 /* Invitation responses can be sent with the peer MAC as BSSID */ 1384 !((hapd->conf->p2p & P2P_GROUP_OWNER) && 1385 stype == WLAN_FC_STYPE_ACTION) && 1386 #endif /* CONFIG_P2P */ 1387 os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) { 1388 printf("MGMT: BSSID=" MACSTR " not our address\n", 1389 MAC2STR(mgmt->bssid)); 1390 return; 1391 } 1392 1393 1394 if (stype == WLAN_FC_STYPE_PROBE_REQ) { 1395 handle_probe_req(hapd, mgmt, len); 1396 return; 1397 } 1398 1399 if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) { 1400 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, 1401 HOSTAPD_LEVEL_DEBUG, 1402 "MGMT: DA=" MACSTR " not our address", 1403 MAC2STR(mgmt->da)); 1404 return; 1405 } 1406 1407 switch (stype) { 1408 case WLAN_FC_STYPE_AUTH: 1409 wpa_printf(MSG_DEBUG, "mgmt::auth"); 1410 handle_auth(hapd, mgmt, len); 1411 break; 1412 case WLAN_FC_STYPE_ASSOC_REQ: 1413 wpa_printf(MSG_DEBUG, "mgmt::assoc_req"); 1414 handle_assoc(hapd, mgmt, len, 0); 1415 break; 1416 case WLAN_FC_STYPE_REASSOC_REQ: 1417 wpa_printf(MSG_DEBUG, "mgmt::reassoc_req"); 1418 handle_assoc(hapd, mgmt, len, 1); 1419 break; 1420 case WLAN_FC_STYPE_DISASSOC: 1421 wpa_printf(MSG_DEBUG, "mgmt::disassoc"); 1422 handle_disassoc(hapd, mgmt, len); 1423 break; 1424 case WLAN_FC_STYPE_DEAUTH: 1425 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "mgmt::deauth"); 1426 handle_deauth(hapd, mgmt, len); 1427 break; 1428 case WLAN_FC_STYPE_ACTION: 1429 wpa_printf(MSG_DEBUG, "mgmt::action"); 1430 handle_action(hapd, mgmt, len); 1431 break; 1432 default: 1433 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, 1434 HOSTAPD_LEVEL_DEBUG, 1435 "unknown mgmt frame subtype %d", stype); 1436 break; 1437 } 1438 } 1439 1440 1441 static void handle_auth_cb(struct hostapd_data *hapd, 1442 const struct ieee80211_mgmt *mgmt, 1443 size_t len, int ok) 1444 { 1445 u16 auth_alg, auth_transaction, status_code; 1446 struct sta_info *sta; 1447 1448 if (!ok) { 1449 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211, 1450 HOSTAPD_LEVEL_NOTICE, 1451 "did not acknowledge authentication response"); 1452 return; 1453 } 1454 1455 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) { 1456 printf("handle_auth_cb - too short payload (len=%lu)\n", 1457 (unsigned long) len); 1458 return; 1459 } 1460 1461 auth_alg = le_to_host16(mgmt->u.auth.auth_alg); 1462 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction); 1463 status_code = le_to_host16(mgmt->u.auth.status_code); 1464 1465 sta = ap_get_sta(hapd, mgmt->da); 1466 if (!sta) { 1467 printf("handle_auth_cb: STA " MACSTR " not found\n", 1468 MAC2STR(mgmt->da)); 1469 return; 1470 } 1471 1472 if (status_code == WLAN_STATUS_SUCCESS && 1473 ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) || 1474 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) { 1475 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 1476 HOSTAPD_LEVEL_INFO, "authenticated"); 1477 sta->flags |= WLAN_STA_AUTH; 1478 } 1479 } 1480 1481 1482 static void handle_assoc_cb(struct hostapd_data *hapd, 1483 const struct ieee80211_mgmt *mgmt, 1484 size_t len, int reassoc, int ok) 1485 { 1486 u16 status; 1487 struct sta_info *sta; 1488 int new_assoc = 1; 1489 struct ieee80211_ht_capabilities ht_cap; 1490 1491 if (!ok) { 1492 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211, 1493 HOSTAPD_LEVEL_DEBUG, 1494 "did not acknowledge association response"); 1495 return; 1496 } 1497 1498 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) : 1499 sizeof(mgmt->u.assoc_resp))) { 1500 printf("handle_assoc_cb(reassoc=%d) - too short payload " 1501 "(len=%lu)\n", reassoc, (unsigned long) len); 1502 return; 1503 } 1504 1505 if (reassoc) 1506 status = le_to_host16(mgmt->u.reassoc_resp.status_code); 1507 else 1508 status = le_to_host16(mgmt->u.assoc_resp.status_code); 1509 1510 sta = ap_get_sta(hapd, mgmt->da); 1511 if (!sta) { 1512 printf("handle_assoc_cb: STA " MACSTR " not found\n", 1513 MAC2STR(mgmt->da)); 1514 return; 1515 } 1516 1517 if (status != WLAN_STATUS_SUCCESS) 1518 goto fail; 1519 1520 /* Stop previous accounting session, if one is started, and allocate 1521 * new session id for the new session. */ 1522 accounting_sta_stop(hapd, sta); 1523 1524 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 1525 HOSTAPD_LEVEL_INFO, 1526 "associated (aid %d)", 1527 sta->aid); 1528 1529 if (sta->flags & WLAN_STA_ASSOC) 1530 new_assoc = 0; 1531 sta->flags |= WLAN_STA_ASSOC; 1532 if ((!hapd->conf->ieee802_1x && !hapd->conf->wpa) || 1533 sta->auth_alg == WLAN_AUTH_FT) { 1534 /* 1535 * Open, static WEP, or FT protocol; no separate authorization 1536 * step. 1537 */ 1538 ap_sta_set_authorized(hapd, sta, 1); 1539 } 1540 1541 if (reassoc) 1542 mlme_reassociate_indication(hapd, sta); 1543 else 1544 mlme_associate_indication(hapd, sta); 1545 1546 #ifdef CONFIG_IEEE80211W 1547 sta->sa_query_timed_out = 0; 1548 #endif /* CONFIG_IEEE80211W */ 1549 1550 /* 1551 * Remove the STA entry in order to make sure the STA PS state gets 1552 * cleared and configuration gets updated in case of reassociation back 1553 * to the same AP. 1554 */ 1555 hostapd_drv_sta_remove(hapd, sta->addr); 1556 1557 #ifdef CONFIG_IEEE80211N 1558 if (sta->flags & WLAN_STA_HT) 1559 hostapd_get_ht_capab(hapd, sta->ht_capabilities, &ht_cap); 1560 #endif /* CONFIG_IEEE80211N */ 1561 1562 if (hostapd_sta_add(hapd, sta->addr, sta->aid, sta->capability, 1563 sta->supported_rates, sta->supported_rates_len, 1564 sta->listen_interval, 1565 sta->flags & WLAN_STA_HT ? &ht_cap : NULL, 1566 sta->flags, sta->qosinfo)) { 1567 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 1568 HOSTAPD_LEVEL_NOTICE, 1569 "Could not add STA to kernel driver"); 1570 1571 ap_sta_disconnect(hapd, sta, sta->addr, 1572 WLAN_REASON_DISASSOC_AP_BUSY); 1573 1574 goto fail; 1575 } 1576 1577 if (sta->flags & WLAN_STA_WDS) 1578 hostapd_set_wds_sta(hapd, sta->addr, sta->aid, 1); 1579 1580 if (sta->eapol_sm == NULL) { 1581 /* 1582 * This STA does not use RADIUS server for EAP authentication, 1583 * so bind it to the selected VLAN interface now, since the 1584 * interface selection is not going to change anymore. 1585 */ 1586 if (ap_sta_bind_vlan(hapd, sta, 0) < 0) 1587 goto fail; 1588 } else if (sta->vlan_id) { 1589 /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */ 1590 if (ap_sta_bind_vlan(hapd, sta, 0) < 0) 1591 goto fail; 1592 } 1593 1594 hostapd_set_sta_flags(hapd, sta); 1595 1596 if (sta->auth_alg == WLAN_AUTH_FT) 1597 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT); 1598 else 1599 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC); 1600 hapd->new_assoc_sta_cb(hapd, sta, !new_assoc); 1601 1602 ieee802_1x_notify_port_enabled(sta->eapol_sm, 1); 1603 1604 fail: 1605 /* Copy of the association request is not needed anymore */ 1606 if (sta->last_assoc_req) { 1607 os_free(sta->last_assoc_req); 1608 sta->last_assoc_req = NULL; 1609 } 1610 } 1611 1612 1613 static void handle_deauth_cb(struct hostapd_data *hapd, 1614 const struct ieee80211_mgmt *mgmt, 1615 size_t len, int ok) 1616 { 1617 struct sta_info *sta; 1618 if (mgmt->da[0] & 0x01) 1619 return; 1620 sta = ap_get_sta(hapd, mgmt->da); 1621 if (!sta) { 1622 wpa_printf(MSG_DEBUG, "handle_deauth_cb: STA " MACSTR 1623 " not found", MAC2STR(mgmt->da)); 1624 return; 1625 } 1626 if (ok) 1627 wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged deauth", 1628 MAC2STR(sta->addr)); 1629 else 1630 wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge " 1631 "deauth", MAC2STR(sta->addr)); 1632 1633 ap_sta_deauth_cb(hapd, sta); 1634 } 1635 1636 1637 static void handle_disassoc_cb(struct hostapd_data *hapd, 1638 const struct ieee80211_mgmt *mgmt, 1639 size_t len, int ok) 1640 { 1641 struct sta_info *sta; 1642 if (mgmt->da[0] & 0x01) 1643 return; 1644 sta = ap_get_sta(hapd, mgmt->da); 1645 if (!sta) { 1646 wpa_printf(MSG_DEBUG, "handle_disassoc_cb: STA " MACSTR 1647 " not found", MAC2STR(mgmt->da)); 1648 return; 1649 } 1650 if (ok) 1651 wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged disassoc", 1652 MAC2STR(sta->addr)); 1653 else 1654 wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge " 1655 "disassoc", MAC2STR(sta->addr)); 1656 1657 ap_sta_disassoc_cb(hapd, sta); 1658 } 1659 1660 1661 /** 1662 * ieee802_11_mgmt_cb - Process management frame TX status callback 1663 * @hapd: hostapd BSS data structure (the BSS from which the management frame 1664 * was sent from) 1665 * @buf: management frame data (starting from IEEE 802.11 header) 1666 * @len: length of frame data in octets 1667 * @stype: management frame subtype from frame control field 1668 * @ok: Whether the frame was ACK'ed 1669 */ 1670 void ieee802_11_mgmt_cb(struct hostapd_data *hapd, const u8 *buf, size_t len, 1671 u16 stype, int ok) 1672 { 1673 const struct ieee80211_mgmt *mgmt; 1674 mgmt = (const struct ieee80211_mgmt *) buf; 1675 1676 switch (stype) { 1677 case WLAN_FC_STYPE_AUTH: 1678 wpa_printf(MSG_DEBUG, "mgmt::auth cb"); 1679 handle_auth_cb(hapd, mgmt, len, ok); 1680 break; 1681 case WLAN_FC_STYPE_ASSOC_RESP: 1682 wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb"); 1683 handle_assoc_cb(hapd, mgmt, len, 0, ok); 1684 break; 1685 case WLAN_FC_STYPE_REASSOC_RESP: 1686 wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb"); 1687 handle_assoc_cb(hapd, mgmt, len, 1, ok); 1688 break; 1689 case WLAN_FC_STYPE_PROBE_RESP: 1690 wpa_printf(MSG_EXCESSIVE, "mgmt::proberesp cb"); 1691 break; 1692 case WLAN_FC_STYPE_DEAUTH: 1693 wpa_printf(MSG_DEBUG, "mgmt::deauth cb"); 1694 handle_deauth_cb(hapd, mgmt, len, ok); 1695 break; 1696 case WLAN_FC_STYPE_DISASSOC: 1697 wpa_printf(MSG_DEBUG, "mgmt::disassoc cb"); 1698 handle_disassoc_cb(hapd, mgmt, len, ok); 1699 break; 1700 case WLAN_FC_STYPE_ACTION: 1701 wpa_printf(MSG_DEBUG, "mgmt::action cb"); 1702 break; 1703 default: 1704 printf("unknown mgmt cb frame subtype %d\n", stype); 1705 break; 1706 } 1707 } 1708 1709 1710 int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen) 1711 { 1712 /* TODO */ 1713 return 0; 1714 } 1715 1716 1717 int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta, 1718 char *buf, size_t buflen) 1719 { 1720 /* TODO */ 1721 return 0; 1722 } 1723 1724 1725 void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr, 1726 const u8 *buf, size_t len, int ack) 1727 { 1728 struct sta_info *sta; 1729 struct hostapd_iface *iface = hapd->iface; 1730 1731 sta = ap_get_sta(hapd, addr); 1732 if (sta == NULL && iface->num_bss > 1) { 1733 size_t j; 1734 for (j = 0; j < iface->num_bss; j++) { 1735 hapd = iface->bss[j]; 1736 sta = ap_get_sta(hapd, addr); 1737 if (sta) 1738 break; 1739 } 1740 } 1741 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) 1742 return; 1743 if (sta->flags & WLAN_STA_PENDING_POLL) { 1744 wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending " 1745 "activity poll", MAC2STR(sta->addr), 1746 ack ? "ACKed" : "did not ACK"); 1747 if (ack) 1748 sta->flags &= ~WLAN_STA_PENDING_POLL; 1749 } 1750 1751 ieee802_1x_tx_status(hapd, sta, buf, len, ack); 1752 } 1753 1754 1755 void hostapd_eapol_tx_status(struct hostapd_data *hapd, const u8 *dst, 1756 const u8 *data, size_t len, int ack) 1757 { 1758 struct sta_info *sta; 1759 struct hostapd_iface *iface = hapd->iface; 1760 1761 sta = ap_get_sta(hapd, dst); 1762 if (sta == NULL && iface->num_bss > 1) { 1763 size_t j; 1764 for (j = 0; j < iface->num_bss; j++) { 1765 hapd = iface->bss[j]; 1766 sta = ap_get_sta(hapd, dst); 1767 if (sta) 1768 break; 1769 } 1770 } 1771 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) { 1772 wpa_printf(MSG_DEBUG, "Ignore TX status for Data frame to STA " 1773 MACSTR " that is not currently associated", 1774 MAC2STR(dst)); 1775 return; 1776 } 1777 1778 ieee802_1x_eapol_tx_status(hapd, sta, data, len, ack); 1779 } 1780 1781 1782 void hostapd_client_poll_ok(struct hostapd_data *hapd, const u8 *addr) 1783 { 1784 struct sta_info *sta; 1785 struct hostapd_iface *iface = hapd->iface; 1786 1787 sta = ap_get_sta(hapd, addr); 1788 if (sta == NULL && iface->num_bss > 1) { 1789 size_t j; 1790 for (j = 0; j < iface->num_bss; j++) { 1791 hapd = iface->bss[j]; 1792 sta = ap_get_sta(hapd, addr); 1793 if (sta) 1794 break; 1795 } 1796 } 1797 if (sta == NULL) 1798 return; 1799 if (!(sta->flags & WLAN_STA_PENDING_POLL)) 1800 return; 1801 1802 wpa_printf(MSG_DEBUG, "STA " MACSTR " ACKed pending " 1803 "activity poll", MAC2STR(sta->addr)); 1804 sta->flags &= ~WLAN_STA_PENDING_POLL; 1805 } 1806 1807 1808 void ieee802_11_rx_from_unknown(struct hostapd_data *hapd, const u8 *src, 1809 int wds) 1810 { 1811 struct sta_info *sta; 1812 1813 sta = ap_get_sta(hapd, src); 1814 if (sta && (sta->flags & WLAN_STA_ASSOC)) { 1815 if (wds && !(sta->flags & WLAN_STA_WDS)) { 1816 wpa_printf(MSG_DEBUG, "Enable 4-address WDS mode for " 1817 "STA " MACSTR " (aid %u)", 1818 MAC2STR(sta->addr), sta->aid); 1819 sta->flags |= WLAN_STA_WDS; 1820 hostapd_set_wds_sta(hapd, sta->addr, sta->aid, 1); 1821 } 1822 return; 1823 } 1824 1825 wpa_printf(MSG_DEBUG, "Data/PS-poll frame from not associated STA " 1826 MACSTR, MAC2STR(src)); 1827 if (src[0] & 0x01) { 1828 /* Broadcast bit set in SA?! Ignore the frame silently. */ 1829 return; 1830 } 1831 1832 if (sta && (sta->flags & WLAN_STA_ASSOC_REQ_OK)) { 1833 wpa_printf(MSG_DEBUG, "Association Response to the STA has " 1834 "already been sent, but no TX status yet known - " 1835 "ignore Class 3 frame issue with " MACSTR, 1836 MAC2STR(src)); 1837 return; 1838 } 1839 1840 if (sta && (sta->flags & WLAN_STA_AUTH)) 1841 hostapd_drv_sta_disassoc( 1842 hapd, src, 1843 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); 1844 else 1845 hostapd_drv_sta_deauth( 1846 hapd, src, 1847 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); 1848 } 1849 1850 1851 #endif /* CONFIG_NATIVE_WINDOWS */ 1852
