2 * hostapd / IEEE 802.11 Management
3 * Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2007-2008, Intel Corporation
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
10 * Alternatively, this software may be distributed under the terms of BSD
13 * See README and COPYING for more details.
18 #ifndef CONFIG_NATIVE_WINDOWS
24 #include "ieee802_11.h"
26 #include "hw_features.h"
27 #include "radius/radius.h"
28 #include "radius/radius_client.h"
29 #include "ieee802_11_auth.h"
32 #include "ieee802_1x.h"
36 #include "accounting.h"
41 u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid)
46 if (hapd->iface->current_rates == NULL)
49 *pos++ = WLAN_EID_SUPP_RATES;
50 num = hapd->iface->num_rates;
52 /* rest of the rates are encoded in Extended supported
59 for (i = 0, count = 0; i < hapd->iface->num_rates && count < num;
62 *pos = hapd->iface->current_rates[i].rate / 5;
63 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
72 u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid)
77 if (hapd->iface->current_rates == NULL)
80 num = hapd->iface->num_rates;
85 *pos++ = WLAN_EID_EXT_SUPP_RATES;
88 for (i = 0, count = 0; i < hapd->iface->num_rates && count < num + 8;
92 continue; /* already in SuppRates IE */
93 *pos = hapd->iface->current_rates[i].rate / 5;
94 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
103 u8 * hostapd_eid_ht_capabilities_info(struct hostapd_data *hapd, u8 *eid)
105 #ifdef CONFIG_IEEE80211N
106 struct ieee80211_ht_capability *cap;
109 if (!hapd->iconf->ieee80211n)
112 *pos++ = WLAN_EID_HT_CAP;
113 *pos++ = sizeof(*cap);
115 cap = (struct ieee80211_ht_capability *) pos;
116 os_memset(cap, 0, sizeof(*cap));
117 SET_2BIT_U8(&cap->mac_ht_params_info,
118 MAC_HT_PARAM_INFO_MAX_RX_AMPDU_FACTOR_OFFSET,
119 MAX_RX_AMPDU_FACTOR_64KB);
121 cap->capabilities_info = host_to_le16(hapd->iconf->ht_capab);
123 cap->supported_mcs_set[0] = 0xff;
124 cap->supported_mcs_set[1] = 0xff;
129 #else /* CONFIG_IEEE80211N */
131 #endif /* CONFIG_IEEE80211N */
135 u8 * hostapd_eid_ht_operation(struct hostapd_data *hapd, u8 *eid)
137 #ifdef CONFIG_IEEE80211N
138 struct ieee80211_ht_operation *oper;
141 if (!hapd->iconf->ieee80211n)
144 *pos++ = WLAN_EID_HT_OPERATION;
145 *pos++ = sizeof(*oper);
147 oper = (struct ieee80211_ht_operation *) pos;
148 os_memset(oper, 0, sizeof(*oper));
150 oper->control_chan = hapd->iconf->channel;
151 oper->operation_mode = host_to_le16(hapd->iface->ht_op_mode);
152 if (hapd->iconf->secondary_channel == 1)
153 oper->ht_param |= HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE |
154 HT_INFO_HT_PARAM_REC_TRANS_CHNL_WIDTH;
155 if (hapd->iconf->secondary_channel == -1)
156 oper->ht_param |= HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW |
157 HT_INFO_HT_PARAM_REC_TRANS_CHNL_WIDTH;
159 pos += sizeof(*oper);
162 #else /* CONFIG_IEEE80211N */
164 #endif /* CONFIG_IEEE80211N */
168 #ifdef CONFIG_IEEE80211N
172 Set to 0 (HT pure) under the followign conditions
173 - all STAs in the BSS are 20/40 MHz HT in 20/40 MHz BSS or
174 - all STAs in the BSS are 20 MHz HT in 20 MHz BSS
175 Set to 1 (HT non-member protection) if there may be non-HT STAs
176 in both the primary and the secondary channel
177 Set to 2 if only HT STAs are associated in BSS,
178 however and at least one 20 MHz HT STA is associated
179 Set to 3 (HT mixed mode) when one or more non-HT STAs are associated
180 (currently non-GF HT station is considered as non-HT STA also)
182 int hostapd_ht_operation_update(struct hostapd_iface *iface)
184 u16 cur_op_mode, new_op_mode;
185 int op_mode_changes = 0;
187 if (!iface->conf->ieee80211n || iface->conf->ht_op_mode_fixed)
190 wpa_printf(MSG_DEBUG, "%s current operation mode=0x%X",
191 __func__, iface->ht_op_mode);
193 if (!(iface->ht_op_mode & HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT)
194 && iface->num_sta_ht_no_gf) {
196 HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT;
198 } else if ((iface->ht_op_mode &
199 HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT) &&
200 iface->num_sta_ht_no_gf == 0) {
202 ~HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT;
206 if (!(iface->ht_op_mode & HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT) &&
207 (iface->num_sta_no_ht || iface->olbc_ht)) {
208 iface->ht_op_mode |= HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT;
210 } else if ((iface->ht_op_mode &
211 HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT) &&
212 (iface->num_sta_no_ht == 0 && !iface->olbc_ht)) {
214 ~HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT;
218 /* Note: currently we switch to the MIXED op mode if HT non-greenfield
219 * station is associated. Probably it's a theoretical case, since
220 * it looks like all known HT STAs support greenfield.
223 if (iface->num_sta_no_ht ||
224 (iface->ht_op_mode & HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT))
225 new_op_mode = OP_MODE_MIXED;
226 else if ((iface->conf->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)
227 && iface->num_sta_ht_20mhz)
228 new_op_mode = OP_MODE_20MHZ_HT_STA_ASSOCED;
229 else if (iface->olbc_ht)
230 new_op_mode = OP_MODE_MAY_BE_LEGACY_STAS;
232 new_op_mode = OP_MODE_PURE;
234 cur_op_mode = iface->ht_op_mode & HT_INFO_OPERATION_MODE_OP_MODE_MASK;
235 if (cur_op_mode != new_op_mode) {
236 iface->ht_op_mode &= ~HT_INFO_OPERATION_MODE_OP_MODE_MASK;
237 iface->ht_op_mode |= new_op_mode;
241 wpa_printf(MSG_DEBUG, "%s new operation mode=0x%X changes=%d",
242 __func__, iface->ht_op_mode, op_mode_changes);
244 return op_mode_changes;
247 #endif /* CONFIG_IEEE80211N */
250 u16 hostapd_own_capab_info(struct hostapd_data *hapd, struct sta_info *sta,
253 int capab = WLAN_CAPABILITY_ESS;
256 if (hapd->iface->num_sta_no_short_preamble == 0 &&
257 hapd->iconf->preamble == SHORT_PREAMBLE)
258 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
260 privacy = hapd->conf->ssid.wep.keys_set;
262 if (hapd->conf->ieee802_1x &&
263 (hapd->conf->default_wep_key_len ||
264 hapd->conf->individual_wep_key_len))
271 int policy, def_klen;
272 if (probe && sta->ssid_probe) {
273 policy = sta->ssid_probe->security_policy;
274 def_klen = sta->ssid_probe->wep.default_len;
276 policy = sta->ssid->security_policy;
277 def_klen = sta->ssid->wep.default_len;
279 privacy = policy != SECURITY_PLAINTEXT;
280 if (policy == SECURITY_IEEE_802_1X && def_klen == 0)
285 capab |= WLAN_CAPABILITY_PRIVACY;
287 if (hapd->iface->current_mode &&
288 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G &&
289 hapd->iface->num_sta_no_short_slot_time == 0)
290 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
296 #ifdef CONFIG_IEEE80211W
297 static u8 * hostapd_eid_assoc_comeback_time(struct hostapd_data *hapd,
298 struct sta_info *sta, u8 *eid)
303 *pos++ = WLAN_EID_ASSOC_COMEBACK_TIME;
305 timeout = (hapd->conf->assoc_ping_attempts - sta->ping_count + 1) *
306 hapd->conf->assoc_ping_timeout;
307 WPA_PUT_LE32(pos, timeout);
312 #endif /* CONFIG_IEEE80211W */
315 void ieee802_11_print_ssid(char *buf, const u8 *ssid, u8 len)
318 if (len > HOSTAPD_MAX_SSID_LEN)
319 len = HOSTAPD_MAX_SSID_LEN;
320 for (i = 0; i < len; i++) {
321 if (ssid[i] >= 32 && ssid[i] < 127)
330 void ieee802_11_send_deauth(struct hostapd_data *hapd, u8 *addr, u16 reason)
332 struct ieee80211_mgmt mgmt;
334 hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
336 "deauthenticate - reason %d", reason);
337 os_memset(&mgmt, 0, sizeof(mgmt));
338 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
339 WLAN_FC_STYPE_DEAUTH);
340 os_memcpy(mgmt.da, addr, ETH_ALEN);
341 os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
342 os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
343 mgmt.u.deauth.reason_code = host_to_le16(reason);
344 if (hostapd_send_mgmt_frame(hapd, &mgmt, IEEE80211_HDRLEN +
345 sizeof(mgmt.u.deauth), 0) < 0)
346 perror("ieee802_11_send_deauth: send");
350 static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta,
351 u16 auth_transaction, u8 *challenge, int iswep)
353 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
355 "authentication (shared key, transaction %d)",
358 if (auth_transaction == 1) {
359 if (!sta->challenge) {
360 /* Generate a pseudo-random challenge */
364 sta->challenge = os_zalloc(WLAN_AUTH_CHALLENGE_LEN);
365 if (sta->challenge == NULL)
366 return WLAN_STATUS_UNSPECIFIED_FAILURE;
370 os_memcpy(key, &now, 4);
371 os_memcpy(key + 4, &r, 4);
372 rc4(sta->challenge, WLAN_AUTH_CHALLENGE_LEN,
378 if (auth_transaction != 3)
379 return WLAN_STATUS_UNSPECIFIED_FAILURE;
382 if (!iswep || !sta->challenge || !challenge ||
383 os_memcmp(sta->challenge, challenge, WLAN_AUTH_CHALLENGE_LEN)) {
384 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
386 "shared key authentication - invalid "
387 "challenge-response");
388 return WLAN_STATUS_CHALLENGE_FAIL;
391 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
393 "authentication OK (shared key)");
394 #ifdef IEEE80211_REQUIRE_AUTH_ACK
395 /* Station will be marked authenticated if it ACKs the
396 * authentication reply. */
398 sta->flags |= WLAN_STA_AUTH;
399 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
401 os_free(sta->challenge);
402 sta->challenge = NULL;
408 static void send_auth_reply(struct hostapd_data *hapd,
409 const u8 *dst, const u8 *bssid,
410 u16 auth_alg, u16 auth_transaction, u16 resp,
411 const u8 *ies, size_t ies_len)
413 struct ieee80211_mgmt *reply;
417 rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth) + ies_len;
418 buf = os_zalloc(rlen);
422 reply = (struct ieee80211_mgmt *) buf;
423 reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
425 os_memcpy(reply->da, dst, ETH_ALEN);
426 os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
427 os_memcpy(reply->bssid, bssid, ETH_ALEN);
429 reply->u.auth.auth_alg = host_to_le16(auth_alg);
430 reply->u.auth.auth_transaction = host_to_le16(auth_transaction);
431 reply->u.auth.status_code = host_to_le16(resp);
434 os_memcpy(reply->u.auth.variable, ies, ies_len);
436 wpa_printf(MSG_DEBUG, "authentication reply: STA=" MACSTR
437 " auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu)",
438 MAC2STR(dst), auth_alg, auth_transaction,
439 resp, (unsigned long) ies_len);
440 if (hostapd_send_mgmt_frame(hapd, reply, rlen, 0) < 0)
441 perror("send_auth_reply: send");
447 #ifdef CONFIG_IEEE80211R
448 static void handle_auth_ft_finish(void *ctx, const u8 *dst, const u8 *bssid,
449 u16 auth_transaction, u16 status,
450 const u8 *ies, size_t ies_len)
452 struct hostapd_data *hapd = ctx;
453 struct sta_info *sta;
455 send_auth_reply(hapd, dst, bssid, WLAN_AUTH_FT, auth_transaction,
456 status, ies, ies_len);
458 if (status != WLAN_STATUS_SUCCESS)
461 sta = ap_get_sta(hapd, dst);
465 hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211,
466 HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)");
467 sta->flags |= WLAN_STA_AUTH;
468 mlme_authenticate_indication(hapd, sta);
470 #endif /* CONFIG_IEEE80211R */
473 static void handle_auth(struct hostapd_data *hapd, struct ieee80211_mgmt *mgmt,
476 u16 auth_alg, auth_transaction, status_code;
477 u16 resp = WLAN_STATUS_SUCCESS;
478 struct sta_info *sta = NULL;
481 u8 *challenge = NULL;
482 u32 session_timeout, acct_interim_interval;
484 u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN];
485 size_t resp_ies_len = 0;
487 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
488 printf("handle_auth - too short payload (len=%lu)\n",
489 (unsigned long) len);
493 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
494 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
495 status_code = le_to_host16(mgmt->u.auth.status_code);
496 fc = le_to_host16(mgmt->frame_control);
498 if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) +
499 2 + WLAN_AUTH_CHALLENGE_LEN &&
500 mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE &&
501 mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN)
502 challenge = &mgmt->u.auth.variable[2];
504 wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d "
505 "auth_transaction=%d status_code=%d wep=%d%s",
506 MAC2STR(mgmt->sa), auth_alg, auth_transaction,
507 status_code, !!(fc & WLAN_FC_ISWEP),
508 challenge ? " challenge" : "");
510 if (hapd->tkip_countermeasures) {
511 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
515 if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) &&
516 auth_alg == WLAN_AUTH_OPEN) ||
517 #ifdef CONFIG_IEEE80211R
519 (hapd->conf->wpa_key_mgmt &
520 (WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_FT_PSK)) &&
521 auth_alg == WLAN_AUTH_FT) ||
522 #endif /* CONFIG_IEEE80211R */
523 ((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) &&
524 auth_alg == WLAN_AUTH_SHARED_KEY))) {
525 printf("Unsupported authentication algorithm (%d)\n",
527 resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
531 if (!(auth_transaction == 1 ||
532 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) {
533 printf("Unknown authentication transaction number (%d)\n",
535 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
539 if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) {
540 printf("Station " MACSTR " not allowed to authenticate.\n",
542 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
546 res = hostapd_allowed_address(hapd, mgmt->sa, (u8 *) mgmt, len,
548 &acct_interim_interval, &vlan_id);
549 if (res == HOSTAPD_ACL_REJECT) {
550 printf("Station " MACSTR " not allowed to authenticate.\n",
552 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
555 if (res == HOSTAPD_ACL_PENDING) {
556 wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR
557 " waiting for an external authentication",
559 /* Authentication code will re-send the authentication frame
560 * after it has received (and cached) information from the
561 * external source. */
565 sta = ap_sta_add(hapd, mgmt->sa);
567 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
572 if (hostapd_get_vlan_id_ifname(hapd->conf->vlan,
573 sta->vlan_id) == NULL) {
574 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
575 HOSTAPD_LEVEL_INFO, "Invalid VLAN ID "
576 "%d received from RADIUS server",
578 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
581 sta->vlan_id = vlan_id;
582 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
583 HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id);
586 sta->flags &= ~WLAN_STA_PREAUTH;
587 ieee802_1x_notify_pre_auth(sta->eapol_sm, 0);
589 if (hapd->conf->radius->acct_interim_interval == 0 &&
590 acct_interim_interval)
591 sta->acct_interim_interval = acct_interim_interval;
592 if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT)
593 ap_sta_session_timeout(hapd, sta, session_timeout);
595 ap_sta_no_session_timeout(hapd, sta);
599 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
601 "authentication OK (open system)");
602 #ifdef IEEE80211_REQUIRE_AUTH_ACK
603 /* Station will be marked authenticated if it ACKs the
604 * authentication reply. */
606 sta->flags |= WLAN_STA_AUTH;
607 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
608 sta->auth_alg = WLAN_AUTH_OPEN;
609 mlme_authenticate_indication(hapd, sta);
612 case WLAN_AUTH_SHARED_KEY:
613 resp = auth_shared_key(hapd, sta, auth_transaction, challenge,
615 sta->auth_alg = WLAN_AUTH_SHARED_KEY;
616 mlme_authenticate_indication(hapd, sta);
617 if (sta->challenge && auth_transaction == 1) {
618 resp_ies[0] = WLAN_EID_CHALLENGE;
619 resp_ies[1] = WLAN_AUTH_CHALLENGE_LEN;
620 os_memcpy(resp_ies + 2, sta->challenge,
621 WLAN_AUTH_CHALLENGE_LEN);
622 resp_ies_len = 2 + WLAN_AUTH_CHALLENGE_LEN;
625 #ifdef CONFIG_IEEE80211R
627 sta->auth_alg = WLAN_AUTH_FT;
628 if (sta->wpa_sm == NULL)
629 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
631 if (sta->wpa_sm == NULL) {
632 wpa_printf(MSG_DEBUG, "FT: Failed to initialize WPA "
634 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
637 wpa_ft_process_auth(sta->wpa_sm, mgmt->bssid,
638 auth_transaction, mgmt->u.auth.variable,
639 len - IEEE80211_HDRLEN -
640 sizeof(mgmt->u.auth),
641 handle_auth_ft_finish, hapd);
642 /* handle_auth_ft_finish() callback will complete auth. */
644 #endif /* CONFIG_IEEE80211R */
648 send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg,
649 auth_transaction + 1, resp, resp_ies, resp_ies_len);
653 static void handle_assoc(struct hostapd_data *hapd,
654 struct ieee80211_mgmt *mgmt, size_t len, int reassoc)
656 u16 capab_info, listen_interval;
657 u16 resp = WLAN_STATUS_SUCCESS;
660 int send_deauth = 0, send_len, left, i;
661 struct sta_info *sta;
662 struct ieee802_11_elems elems;
663 u8 buf[sizeof(struct ieee80211_mgmt) + 512];
664 struct ieee80211_mgmt *reply;
666 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
667 sizeof(mgmt->u.assoc_req))) {
668 printf("handle_assoc(reassoc=%d) - too short payload (len=%lu)"
669 "\n", reassoc, (unsigned long) len);
674 capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info);
675 listen_interval = le_to_host16(
676 mgmt->u.reassoc_req.listen_interval);
677 wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR
678 " capab_info=0x%02x listen_interval=%d current_ap="
680 MAC2STR(mgmt->sa), capab_info, listen_interval,
681 MAC2STR(mgmt->u.reassoc_req.current_ap));
682 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req));
683 pos = mgmt->u.reassoc_req.variable;
685 capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
686 listen_interval = le_to_host16(
687 mgmt->u.assoc_req.listen_interval);
688 wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR
689 " capab_info=0x%02x listen_interval=%d",
690 MAC2STR(mgmt->sa), capab_info, listen_interval);
691 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req));
692 pos = mgmt->u.assoc_req.variable;
695 sta = ap_get_sta(hapd, mgmt->sa);
696 #ifdef CONFIG_IEEE80211R
697 if (sta && sta->auth_alg == WLAN_AUTH_FT &&
698 (sta->flags & WLAN_STA_AUTH) == 0) {
699 wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate "
700 "prior to authentication since it is using "
701 "over-the-DS FT", MAC2STR(mgmt->sa));
703 #endif /* CONFIG_IEEE80211R */
704 if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
705 printf("STA " MACSTR " trying to associate before "
706 "authentication\n", MAC2STR(mgmt->sa));
708 printf(" sta: addr=" MACSTR " aid=%d flags=0x%04x\n",
709 MAC2STR(sta->addr), sta->aid, sta->flags);
712 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
716 if (hapd->tkip_countermeasures) {
717 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
721 if (listen_interval > hapd->conf->max_listen_interval) {
722 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
724 "Too large Listen Interval (%d)",
726 resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE;
730 sta->capability = capab_info;
731 sta->listen_interval = listen_interval;
733 /* followed by SSID and Supported rates; and HT capabilities if 802.11n
735 if (ieee802_11_parse_elems(pos, left, &elems, 1) == ParseFailed ||
737 printf("STA " MACSTR " sent invalid association request\n",
739 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
743 if (elems.ssid_len != hapd->conf->ssid.ssid_len ||
744 os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) != 0)
747 ieee802_11_print_ssid(ssid_txt, elems.ssid, elems.ssid_len);
748 printf("Station " MACSTR " tried to associate with "
749 "unknown SSID '%s'\n", MAC2STR(sta->addr), ssid_txt);
750 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
754 sta->flags &= ~WLAN_STA_WME;
755 if (elems.wme && hapd->conf->wme_enabled) {
756 if (hostapd_eid_wme_valid(hapd, elems.wme, elems.wme_len))
757 hostapd_logger(hapd, sta->addr,
760 "invalid WME element in association "
763 sta->flags |= WLAN_STA_WME;
766 if (!elems.supp_rates) {
767 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
769 "No supported rates element in AssocReq");
770 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
774 if (elems.supp_rates_len > sizeof(sta->supported_rates)) {
775 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
777 "Invalid supported rates element length %d",
778 elems.supp_rates_len);
779 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
783 os_memset(sta->supported_rates, 0, sizeof(sta->supported_rates));
784 os_memcpy(sta->supported_rates, elems.supp_rates,
785 elems.supp_rates_len);
786 sta->supported_rates_len = elems.supp_rates_len;
788 if (elems.ext_supp_rates) {
789 if (elems.supp_rates_len + elems.ext_supp_rates_len >
790 sizeof(sta->supported_rates)) {
791 hostapd_logger(hapd, mgmt->sa,
792 HOSTAPD_MODULE_IEEE80211,
794 "Invalid supported rates element length"
795 " %d+%d", elems.supp_rates_len,
796 elems.ext_supp_rates_len);
797 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
801 os_memcpy(sta->supported_rates + elems.supp_rates_len,
802 elems.ext_supp_rates, elems.ext_supp_rates_len);
803 sta->supported_rates_len += elems.ext_supp_rates_len;
806 #ifdef CONFIG_IEEE80211N
807 /* save HT capabilities in the sta object */
808 os_memset(&sta->ht_capabilities, 0, sizeof(sta->ht_capabilities));
809 if (elems.ht_capabilities &&
810 elems.ht_capabilities_len >= sizeof(struct ieee80211_ht_capability)
811 && (sta->flags & WLAN_STA_WME)) {
812 /* note: without WMM capability, treat the sta as non-HT */
813 sta->flags |= WLAN_STA_HT;
814 sta->ht_capabilities.id = WLAN_EID_HT_CAP;
815 sta->ht_capabilities.length =
816 sizeof(struct ieee80211_ht_capability);
817 os_memcpy(&sta->ht_capabilities.data,
818 elems.ht_capabilities,
819 sizeof(struct ieee80211_ht_capability));
821 sta->flags &= ~WLAN_STA_HT;
822 #endif /* CONFIG_IEEE80211N */
824 if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) {
825 wpa_ie = elems.rsn_ie;
826 wpa_ie_len = elems.rsn_ie_len;
827 } else if ((hapd->conf->wpa & WPA_PROTO_WPA) &&
829 wpa_ie = elems.wpa_ie;
830 wpa_ie_len = elems.wpa_ie_len;
836 if (hapd->conf->wps_state && wpa_ie == NULL) {
838 wpa_printf(MSG_DEBUG, "STA included WPS IE in "
839 "(Re)Association Request - assume WPS is "
841 sta->flags |= WLAN_STA_WPS;
842 wpabuf_free(sta->wps_ie);
843 sta->wps_ie = wpabuf_alloc_copy(elems.wps_ie + 4,
844 elems.wps_ie_len - 4);
846 wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE "
847 "in (Re)Association Request - possible WPS "
849 sta->flags |= WLAN_STA_MAYBE_WPS;
852 #endif /* CONFIG_WPS */
853 if (hapd->conf->wpa && wpa_ie == NULL) {
854 printf("STA " MACSTR ": No WPA/RSN IE in association "
855 "request\n", MAC2STR(sta->addr));
856 resp = WLAN_STATUS_INVALID_IE;
860 if (hapd->conf->wpa && wpa_ie) {
864 if (sta->wpa_sm == NULL)
865 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
867 if (sta->wpa_sm == NULL) {
868 printf("Failed to initialize WPA state machine\n");
869 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
872 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
874 elems.mdie, elems.mdie_len);
875 if (res == WPA_INVALID_GROUP)
876 resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
877 else if (res == WPA_INVALID_PAIRWISE)
878 resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
879 else if (res == WPA_INVALID_AKMP)
880 resp = WLAN_STATUS_AKMP_NOT_VALID;
881 else if (res == WPA_ALLOC_FAIL)
882 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
883 #ifdef CONFIG_IEEE80211W
884 else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION)
885 resp = WLAN_STATUS_UNSPECIFIED_FAILURE; /* FIX */
886 else if (res == WPA_INVALID_MGMT_GROUP_CIPHER)
887 resp = WLAN_STATUS_UNSPECIFIED_FAILURE; /* FIX */
888 #endif /* CONFIG_IEEE80211W */
889 else if (res == WPA_INVALID_MDIE)
890 resp = WLAN_STATUS_INVALID_MDIE;
891 else if (res != WPA_IE_OK)
892 resp = WLAN_STATUS_INVALID_IE;
893 if (resp != WLAN_STATUS_SUCCESS)
895 #ifdef CONFIG_IEEE80211W
896 if ((sta->flags & WLAN_STA_MFP) && !sta->ping_timed_out) {
898 * STA has already been associated with MFP and ping
899 * timeout has not been reached. Reject the
900 * association attempt temporarily and start ping, if
901 * one is not pending.
904 if (sta->ping_count == 0)
905 ap_sta_start_ping(hapd, sta);
907 resp = WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;
911 if (wpa_auth_uses_mfp(sta->wpa_sm))
912 sta->flags |= WLAN_STA_MFP;
914 sta->flags &= ~WLAN_STA_MFP;
915 #endif /* CONFIG_IEEE80211W */
917 #ifdef CONFIG_IEEE80211R
918 if (sta->auth_alg == WLAN_AUTH_FT) {
920 wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried "
921 "to use association (not "
922 "re-association) with FT auth_alg",
924 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
928 resp = wpa_ft_validate_reassoc(sta->wpa_sm, pos, left);
929 if (resp != WLAN_STATUS_SUCCESS)
932 #endif /* CONFIG_IEEE80211R */
935 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
936 sta->flags |= WLAN_STA_NONERP;
937 for (i = 0; i < sta->supported_rates_len; i++) {
938 if ((sta->supported_rates[i] & 0x7f) > 22) {
939 sta->flags &= ~WLAN_STA_NONERP;
943 if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) {
945 hapd->iface->num_sta_non_erp++;
946 if (hapd->iface->num_sta_non_erp == 1)
947 ieee802_11_set_beacons(hapd->iface);
950 if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) &&
951 !sta->no_short_slot_time_set) {
952 sta->no_short_slot_time_set = 1;
953 hapd->iface->num_sta_no_short_slot_time++;
954 if (hapd->iface->current_mode->mode ==
955 HOSTAPD_MODE_IEEE80211G &&
956 hapd->iface->num_sta_no_short_slot_time == 1)
957 ieee802_11_set_beacons(hapd->iface);
960 if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
961 sta->flags |= WLAN_STA_SHORT_PREAMBLE;
963 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
965 if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
966 !sta->no_short_preamble_set) {
967 sta->no_short_preamble_set = 1;
968 hapd->iface->num_sta_no_short_preamble++;
969 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
970 && hapd->iface->num_sta_no_short_preamble == 1)
971 ieee802_11_set_beacons(hapd->iface);
974 #ifdef CONFIG_IEEE80211N
975 if (sta->flags & WLAN_STA_HT) {
976 u16 ht_capab = le_to_host16(
977 sta->ht_capabilities.data.capabilities_info);
978 wpa_printf(MSG_DEBUG, "HT: STA " MACSTR " HT Capabilities "
979 "Info: 0x%04x", MAC2STR(sta->addr), ht_capab);
980 if ((ht_capab & HT_CAP_INFO_GREEN_FIELD) == 0) {
981 hapd->iface->num_sta_ht_no_gf++;
982 wpa_printf(MSG_DEBUG, "%s STA " MACSTR " - no "
983 "greenfield, num of non-gf stations %d",
984 __func__, MAC2STR(sta->addr),
985 hapd->iface->num_sta_ht_no_gf);
987 if ((ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET) == 0) {
988 hapd->iface->num_sta_ht_20mhz++;
989 wpa_printf(MSG_DEBUG, "%s STA " MACSTR " - 20 MHz HT, "
990 "num of 20MHz HT STAs %d",
991 __func__, MAC2STR(sta->addr),
992 hapd->iface->num_sta_ht_20mhz);
995 hapd->iface->num_sta_no_ht++;
996 if (hapd->iconf->ieee80211n) {
997 wpa_printf(MSG_DEBUG, "%s STA " MACSTR
998 " - no HT, num of non-HT stations %d",
999 __func__, MAC2STR(sta->addr),
1000 hapd->iface->num_sta_no_ht);
1004 if (hostapd_ht_operation_update(hapd->iface) > 0)
1005 ieee802_11_set_beacons(hapd->iface);
1006 #endif /* CONFIG_IEEE80211N */
1008 /* get a unique AID */
1010 wpa_printf(MSG_DEBUG, " old AID %d", sta->aid);
1012 for (sta->aid = 1; sta->aid <= MAX_AID_TABLE_SIZE; sta->aid++)
1013 if (hapd->sta_aid[sta->aid - 1] == NULL)
1015 if (sta->aid > MAX_AID_TABLE_SIZE) {
1017 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
1018 wpa_printf(MSG_ERROR, " no room for more AIDs");
1021 hapd->sta_aid[sta->aid - 1] = sta;
1022 wpa_printf(MSG_DEBUG, " new AID %d", sta->aid);
1026 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1027 HOSTAPD_LEVEL_DEBUG,
1028 "association OK (aid %d)", sta->aid);
1029 /* Station will be marked associated, after it acknowledges AssocResp
1033 os_memcpy(sta->previous_ap, mgmt->u.reassoc_req.current_ap,
1037 if (sta->last_assoc_req)
1038 os_free(sta->last_assoc_req);
1039 sta->last_assoc_req = os_malloc(len);
1040 if (sta->last_assoc_req)
1041 os_memcpy(sta->last_assoc_req, mgmt, len);
1043 /* Make sure that the previously registered inactivity timer will not
1044 * remove the STA immediately. */
1045 sta->timeout_next = STA_NULLFUNC;
1048 os_memset(buf, 0, sizeof(buf));
1049 reply = (struct ieee80211_mgmt *) buf;
1050 reply->frame_control =
1051 IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1052 (send_deauth ? WLAN_FC_STYPE_DEAUTH :
1053 (reassoc ? WLAN_FC_STYPE_REASSOC_RESP :
1054 WLAN_FC_STYPE_ASSOC_RESP)));
1055 os_memcpy(reply->da, mgmt->sa, ETH_ALEN);
1056 os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
1057 os_memcpy(reply->bssid, mgmt->bssid, ETH_ALEN);
1059 send_len = IEEE80211_HDRLEN;
1061 send_len += sizeof(reply->u.deauth);
1062 reply->u.deauth.reason_code = host_to_le16(resp);
1065 send_len += sizeof(reply->u.assoc_resp);
1066 reply->u.assoc_resp.capab_info =
1067 host_to_le16(hostapd_own_capab_info(hapd, sta, 0));
1068 reply->u.assoc_resp.status_code = host_to_le16(resp);
1069 reply->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0)
1070 | BIT(14) | BIT(15));
1071 /* Supported rates */
1072 p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable);
1073 /* Extended supported rates */
1074 p = hostapd_eid_ext_supp_rates(hapd, p);
1075 if (sta->flags & WLAN_STA_WME)
1076 p = hostapd_eid_wme(hapd, p);
1078 p = hostapd_eid_ht_capabilities_info(hapd, p);
1079 p = hostapd_eid_ht_operation(hapd, p);
1081 #ifdef CONFIG_IEEE80211R
1082 if (resp == WLAN_STATUS_SUCCESS) {
1083 /* IEEE 802.11r: Mobility Domain Information, Fast BSS
1084 * Transition Information, RSN */
1085 p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p,
1086 buf + sizeof(buf) - p,
1089 #endif /* CONFIG_IEEE80211R */
1091 #ifdef CONFIG_IEEE80211W
1092 if (resp == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY)
1093 p = hostapd_eid_assoc_comeback_time(hapd, sta, p);
1094 #endif /* CONFIG_IEEE80211W */
1096 send_len += p - reply->u.assoc_resp.variable;
1099 if (hostapd_send_mgmt_frame(hapd, reply, send_len, 0) < 0)
1100 perror("handle_assoc: send");
1104 static void handle_disassoc(struct hostapd_data *hapd,
1105 struct ieee80211_mgmt *mgmt, size_t len)
1107 struct sta_info *sta;
1109 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) {
1110 printf("handle_disassoc - too short payload (len=%lu)\n",
1111 (unsigned long) len);
1115 wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d",
1117 le_to_host16(mgmt->u.disassoc.reason_code));
1119 sta = ap_get_sta(hapd, mgmt->sa);
1121 printf("Station " MACSTR " trying to disassociate, but it "
1122 "is not associated.\n", MAC2STR(mgmt->sa));
1126 sta->flags &= ~WLAN_STA_ASSOC;
1127 wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
1128 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1129 HOSTAPD_LEVEL_INFO, "disassociated");
1130 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1131 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1132 /* Stop Accounting and IEEE 802.1X sessions, but leave the STA
1134 accounting_sta_stop(hapd, sta);
1135 ieee802_1x_free_station(sta);
1136 hostapd_sta_remove(hapd, sta->addr);
1138 if (sta->timeout_next == STA_NULLFUNC ||
1139 sta->timeout_next == STA_DISASSOC) {
1140 sta->timeout_next = STA_DEAUTH;
1141 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1142 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
1146 mlme_disassociate_indication(
1147 hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code));
1151 static void handle_deauth(struct hostapd_data *hapd,
1152 struct ieee80211_mgmt *mgmt, size_t len)
1154 struct sta_info *sta;
1156 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) {
1157 printf("handle_deauth - too short payload (len=%lu)\n",
1158 (unsigned long) len);
1162 wpa_printf(MSG_DEBUG, "deauthentication: STA=" MACSTR
1165 le_to_host16(mgmt->u.deauth.reason_code));
1167 sta = ap_get_sta(hapd, mgmt->sa);
1169 printf("Station " MACSTR " trying to deauthenticate, but it "
1170 "is not authenticated.\n", MAC2STR(mgmt->sa));
1174 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
1175 wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
1176 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1177 HOSTAPD_LEVEL_DEBUG, "deauthenticated");
1178 mlme_deauthenticate_indication(
1179 hapd, sta, le_to_host16(mgmt->u.deauth.reason_code));
1180 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1181 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1182 ap_free_sta(hapd, sta);
1186 static void handle_beacon(struct hostapd_data *hapd,
1187 struct ieee80211_mgmt *mgmt, size_t len,
1188 struct hostapd_frame_info *fi)
1190 struct ieee802_11_elems elems;
1192 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) {
1193 printf("handle_beacon - too short payload (len=%lu)\n",
1194 (unsigned long) len);
1198 (void) ieee802_11_parse_elems(mgmt->u.beacon.variable,
1199 len - (IEEE80211_HDRLEN +
1200 sizeof(mgmt->u.beacon)), &elems,
1203 ap_list_process_beacon(hapd->iface, mgmt, &elems, fi);
1207 #ifdef CONFIG_IEEE80211W
1208 static void hostapd_ping_action(struct hostapd_data *hapd,
1209 struct ieee80211_mgmt *mgmt, size_t len)
1211 struct sta_info *sta;
1215 end = mgmt->u.action.u.ping_resp.trans_id + WLAN_PING_TRANS_ID_LEN;
1216 if (((u8 *) mgmt) + len < end) {
1217 wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short Ping Action "
1218 "frame (len=%lu)", (unsigned long) len);
1222 if (mgmt->u.action.u.ping_resp.action != WLAN_PING_RESPONSE) {
1223 wpa_printf(MSG_DEBUG, "IEEE 802.11: Unexpected Ping Action %d",
1224 mgmt->u.action.u.ping_resp.action);
1228 /* MLME-PING.confirm */
1230 sta = ap_get_sta(hapd, mgmt->sa);
1231 if (sta == NULL || sta->ping_trans_id == NULL) {
1232 wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching STA with "
1233 "pending ping request found");
1237 for (i = 0; i < sta->ping_count; i++) {
1238 if (os_memcmp(sta->ping_trans_id + i * WLAN_PING_TRANS_ID_LEN,
1239 mgmt->u.action.u.ping_resp.trans_id,
1240 WLAN_PING_TRANS_ID_LEN) == 0)
1244 if (i >= sta->ping_count) {
1245 wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching ping "
1246 "transaction identifier found");
1250 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1251 HOSTAPD_LEVEL_DEBUG, "Reply to pending ping received");
1252 ap_sta_stop_ping(hapd, sta);
1254 #endif /* CONFIG_IEEE80211W */
1257 static void handle_action(struct hostapd_data *hapd,
1258 struct ieee80211_mgmt *mgmt, size_t len)
1260 if (len < IEEE80211_HDRLEN + 1) {
1261 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1262 HOSTAPD_LEVEL_DEBUG,
1263 "handle_action - too short payload (len=%lu)",
1264 (unsigned long) len);
1268 switch (mgmt->u.action.category) {
1269 #ifdef CONFIG_IEEE80211R
1270 case WLAN_ACTION_FT:
1272 struct sta_info *sta;
1274 sta = ap_get_sta(hapd, mgmt->sa);
1275 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
1276 wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored FT Action "
1277 "frame from unassociated STA " MACSTR,
1282 if (wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action,
1283 len - IEEE80211_HDRLEN))
1288 #endif /* CONFIG_IEEE80211R */
1289 case WLAN_ACTION_WMM:
1290 hostapd_wme_action(hapd, mgmt, len);
1292 #ifdef CONFIG_IEEE80211W
1293 case WLAN_ACTION_PING:
1294 hostapd_ping_action(hapd, mgmt, len);
1296 #endif /* CONFIG_IEEE80211W */
1299 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1300 HOSTAPD_LEVEL_DEBUG,
1301 "handle_action - unknown action category %d or invalid "
1303 mgmt->u.action.category);
1304 if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) &&
1305 !(mgmt->sa[0] & 0x01)) {
1307 * IEEE 802.11-REVma/D9.0 - 7.3.1.11
1308 * Return the Action frame to the source without change
1309 * except that MSB of the Category set to 1.
1311 wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action "
1312 "frame back to sender");
1313 os_memcpy(mgmt->da, mgmt->sa, ETH_ALEN);
1314 os_memcpy(mgmt->sa, hapd->own_addr, ETH_ALEN);
1315 os_memcpy(mgmt->bssid, hapd->own_addr, ETH_ALEN);
1316 mgmt->u.action.category |= 0x80;
1318 hostapd_send_mgmt_frame(hapd, mgmt, len, 0);
1324 * ieee802_11_mgmt - process incoming IEEE 802.11 management frames
1325 * @hapd: hostapd BSS data structure (the BSS to which the management frame was
1327 * @buf: management frame data (starting from IEEE 802.11 header)
1328 * @len: length of frame data in octets
1329 * @stype: management frame subtype from frame control field
1331 * Process all incoming IEEE 802.11 management frames. This will be called for
1332 * each frame received from the kernel driver through wlan#ap interface. In
1333 * addition, it can be called to re-inserted pending frames (e.g., when using
1334 * external RADIUS server as an MAC ACL).
1336 void ieee802_11_mgmt(struct hostapd_data *hapd, u8 *buf, size_t len, u16 stype,
1337 struct hostapd_frame_info *fi)
1339 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) buf;
1342 if (stype == WLAN_FC_STYPE_BEACON) {
1343 handle_beacon(hapd, mgmt, len, fi);
1347 if (fi && fi->passive_scan)
1350 broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff &&
1351 mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff &&
1352 mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff;
1355 os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) {
1356 printf("MGMT: BSSID=" MACSTR " not our address\n",
1357 MAC2STR(mgmt->bssid));
1362 if (stype == WLAN_FC_STYPE_PROBE_REQ) {
1363 handle_probe_req(hapd, mgmt, len);
1367 if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) {
1368 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1369 HOSTAPD_LEVEL_DEBUG,
1370 "MGMT: DA=" MACSTR " not our address",
1376 case WLAN_FC_STYPE_AUTH:
1377 wpa_printf(MSG_DEBUG, "mgmt::auth");
1378 handle_auth(hapd, mgmt, len);
1380 case WLAN_FC_STYPE_ASSOC_REQ:
1381 wpa_printf(MSG_DEBUG, "mgmt::assoc_req");
1382 handle_assoc(hapd, mgmt, len, 0);
1384 case WLAN_FC_STYPE_REASSOC_REQ:
1385 wpa_printf(MSG_DEBUG, "mgmt::reassoc_req");
1386 handle_assoc(hapd, mgmt, len, 1);
1388 case WLAN_FC_STYPE_DISASSOC:
1389 wpa_printf(MSG_DEBUG, "mgmt::disassoc");
1390 handle_disassoc(hapd, mgmt, len);
1392 case WLAN_FC_STYPE_DEAUTH:
1393 wpa_printf(MSG_DEBUG, "mgmt::deauth");
1394 handle_deauth(hapd, mgmt, len);
1396 case WLAN_FC_STYPE_ACTION:
1397 wpa_printf(MSG_DEBUG, "mgmt::action");
1398 handle_action(hapd, mgmt, len);
1401 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1402 HOSTAPD_LEVEL_DEBUG,
1403 "unknown mgmt frame subtype %d", stype);
1409 static void handle_auth_cb(struct hostapd_data *hapd,
1410 struct ieee80211_mgmt *mgmt,
1413 u16 auth_alg, auth_transaction, status_code;
1414 struct sta_info *sta;
1417 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1418 HOSTAPD_LEVEL_NOTICE,
1419 "did not acknowledge authentication response");
1423 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
1424 printf("handle_auth_cb - too short payload (len=%lu)\n",
1425 (unsigned long) len);
1429 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
1430 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
1431 status_code = le_to_host16(mgmt->u.auth.status_code);
1433 sta = ap_get_sta(hapd, mgmt->da);
1435 printf("handle_auth_cb: STA " MACSTR " not found\n",
1440 if (status_code == WLAN_STATUS_SUCCESS &&
1441 ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
1442 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
1443 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1444 HOSTAPD_LEVEL_INFO, "authenticated");
1445 sta->flags |= WLAN_STA_AUTH;
1450 static void handle_assoc_cb(struct hostapd_data *hapd,
1451 struct ieee80211_mgmt *mgmt,
1452 size_t len, int reassoc, int ok)
1455 struct sta_info *sta;
1457 struct ht_cap_ie *ht_cap = NULL;
1460 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1461 HOSTAPD_LEVEL_DEBUG,
1462 "did not acknowledge association response");
1466 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) :
1467 sizeof(mgmt->u.assoc_resp))) {
1468 printf("handle_assoc_cb(reassoc=%d) - too short payload "
1469 "(len=%lu)\n", reassoc, (unsigned long) len);
1474 status = le_to_host16(mgmt->u.reassoc_resp.status_code);
1476 status = le_to_host16(mgmt->u.assoc_resp.status_code);
1478 sta = ap_get_sta(hapd, mgmt->da);
1480 printf("handle_assoc_cb: STA " MACSTR " not found\n",
1485 if (status != WLAN_STATUS_SUCCESS)
1488 /* Stop previous accounting session, if one is started, and allocate
1489 * new session id for the new session. */
1490 accounting_sta_stop(hapd, sta);
1492 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1494 "associated (aid %d)",
1497 if (sta->flags & WLAN_STA_ASSOC)
1499 sta->flags |= WLAN_STA_ASSOC;
1502 mlme_reassociate_indication(hapd, sta);
1504 mlme_associate_indication(hapd, sta);
1506 #ifdef CONFIG_IEEE80211N
1507 if (sta->flags & WLAN_STA_HT)
1508 ht_cap = &sta->ht_capabilities;
1509 #endif /* CONFIG_IEEE80211N */
1511 #ifdef CONFIG_IEEE80211W
1512 sta->ping_timed_out = 0;
1513 #endif /* CONFIG_IEEE80211W */
1515 if (hostapd_sta_add(hapd->conf->iface, hapd, sta->addr, sta->aid,
1516 sta->capability, sta->supported_rates,
1517 sta->supported_rates_len, 0, sta->listen_interval,
1520 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1521 HOSTAPD_LEVEL_NOTICE,
1522 "Could not add STA to kernel driver");
1525 if (sta->eapol_sm == NULL) {
1527 * This STA does not use RADIUS server for EAP authentication,
1528 * so bind it to the selected VLAN interface now, since the
1529 * interface selection is not going to change anymore.
1531 ap_sta_bind_vlan(hapd, sta, 0);
1532 } else if (sta->vlan_id) {
1533 /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */
1534 ap_sta_bind_vlan(hapd, sta, 0);
1536 if (sta->flags & WLAN_STA_SHORT_PREAMBLE) {
1537 hostapd_sta_set_flags(hapd, sta->addr, sta->flags,
1538 WLAN_STA_SHORT_PREAMBLE, ~0);
1540 hostapd_sta_set_flags(hapd, sta->addr, sta->flags,
1541 0, ~WLAN_STA_SHORT_PREAMBLE);
1544 if (sta->auth_alg == WLAN_AUTH_FT)
1545 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
1547 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
1548 hostapd_new_assoc_sta(hapd, sta, !new_assoc);
1550 ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
1553 /* Copy of the association request is not needed anymore */
1554 if (sta->last_assoc_req) {
1555 os_free(sta->last_assoc_req);
1556 sta->last_assoc_req = NULL;
1561 void ieee802_11_mgmt_cb(struct hostapd_data *hapd, u8 *buf, size_t len,
1564 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) buf;
1567 case WLAN_FC_STYPE_AUTH:
1568 wpa_printf(MSG_DEBUG, "mgmt::auth cb");
1569 handle_auth_cb(hapd, mgmt, len, ok);
1571 case WLAN_FC_STYPE_ASSOC_RESP:
1572 wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb");
1573 handle_assoc_cb(hapd, mgmt, len, 0, ok);
1575 case WLAN_FC_STYPE_REASSOC_RESP:
1576 wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb");
1577 handle_assoc_cb(hapd, mgmt, len, 1, ok);
1579 case WLAN_FC_STYPE_PROBE_RESP:
1580 wpa_printf(MSG_DEBUG, "mgmt::proberesp cb");
1582 case WLAN_FC_STYPE_DEAUTH:
1585 case WLAN_FC_STYPE_ACTION:
1586 wpa_printf(MSG_DEBUG, "mgmt::action cb");
1589 printf("unknown mgmt cb frame subtype %d\n", stype);
1595 static void ieee80211_tkip_countermeasures_stop(void *eloop_ctx,
1598 struct hostapd_data *hapd = eloop_ctx;
1599 hapd->tkip_countermeasures = 0;
1600 hostapd_set_countermeasures(hapd, 0);
1601 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
1602 HOSTAPD_LEVEL_INFO, "TKIP countermeasures ended");
1606 static void ieee80211_tkip_countermeasures_start(struct hostapd_data *hapd)
1608 struct sta_info *sta;
1610 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
1611 HOSTAPD_LEVEL_INFO, "TKIP countermeasures initiated");
1613 wpa_auth_countermeasures_start(hapd->wpa_auth);
1614 hapd->tkip_countermeasures = 1;
1615 hostapd_set_countermeasures(hapd, 1);
1616 wpa_gtk_rekey(hapd->wpa_auth);
1617 eloop_cancel_timeout(ieee80211_tkip_countermeasures_stop, hapd, NULL);
1618 eloop_register_timeout(60, 0, ieee80211_tkip_countermeasures_stop,
1620 for (sta = hapd->sta_list; sta != NULL; sta = sta->next) {
1621 hostapd_sta_deauth(hapd, sta->addr,
1622 WLAN_REASON_MICHAEL_MIC_FAILURE);
1623 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC |
1624 WLAN_STA_AUTHORIZED);
1625 hostapd_sta_remove(hapd, sta->addr);
1630 void ieee80211_michael_mic_failure(struct hostapd_data *hapd, const u8 *addr,
1635 if (addr && local) {
1636 struct sta_info *sta = ap_get_sta(hapd, addr);
1638 wpa_auth_sta_local_mic_failure_report(sta->wpa_sm);
1639 hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
1641 "Michael MIC failure detected in "
1643 mlme_michaelmicfailure_indication(hapd, addr);
1645 wpa_printf(MSG_DEBUG,
1646 "MLME-MICHAELMICFAILURE.indication "
1647 "for not associated STA (" MACSTR
1648 ") ignored", MAC2STR(addr));
1654 if (now > hapd->michael_mic_failure + 60) {
1655 hapd->michael_mic_failures = 1;
1657 hapd->michael_mic_failures++;
1658 if (hapd->michael_mic_failures > 1)
1659 ieee80211_tkip_countermeasures_start(hapd);
1661 hapd->michael_mic_failure = now;
1665 int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
1672 int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
1673 char *buf, size_t buflen)
1679 #endif /* CONFIG_NATIVE_WINDOWS */