Line data Source code
1 : /*
2 : * hostapd / IEEE 802.11 Management
3 : * Copyright (c) 2002-2013, Jouni Malinen <j@w1.fi>
4 : *
5 : * This software may be distributed under the terms of the BSD license.
6 : * See README for more details.
7 : */
8 :
9 : #include "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 "crypto/sha256.h"
17 : #include "crypto/random.h"
18 : #include "common/ieee802_11_defs.h"
19 : #include "common/ieee802_11_common.h"
20 : #include "common/wpa_ctrl.h"
21 : #include "common/sae.h"
22 : #include "radius/radius.h"
23 : #include "radius/radius_client.h"
24 : #include "p2p/p2p.h"
25 : #include "wps/wps.h"
26 : #include "hostapd.h"
27 : #include "beacon.h"
28 : #include "ieee802_11_auth.h"
29 : #include "sta_info.h"
30 : #include "ieee802_1x.h"
31 : #include "wpa_auth.h"
32 : #include "wmm.h"
33 : #include "ap_list.h"
34 : #include "accounting.h"
35 : #include "ap_config.h"
36 : #include "ap_mlme.h"
37 : #include "p2p_hostapd.h"
38 : #include "ap_drv_ops.h"
39 : #include "wnm_ap.h"
40 : #include "ieee802_11.h"
41 : #include "dfs.h"
42 :
43 :
44 2 : u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid)
45 : {
46 2 : u8 *pos = eid;
47 : int i, num, count;
48 :
49 2 : if (hapd->iface->current_rates == NULL)
50 2 : return eid;
51 :
52 0 : *pos++ = WLAN_EID_SUPP_RATES;
53 0 : num = hapd->iface->num_rates;
54 0 : if (hapd->iconf->ieee80211n && hapd->iconf->require_ht)
55 0 : num++;
56 0 : if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht)
57 0 : num++;
58 0 : if (num > 8) {
59 : /* rest of the rates are encoded in Extended supported
60 : * rates element */
61 0 : num = 8;
62 : }
63 :
64 0 : *pos++ = num;
65 0 : for (i = 0, count = 0; i < hapd->iface->num_rates && count < num;
66 0 : i++) {
67 0 : count++;
68 0 : *pos = hapd->iface->current_rates[i].rate / 5;
69 0 : if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
70 0 : *pos |= 0x80;
71 0 : pos++;
72 : }
73 :
74 0 : if (hapd->iconf->ieee80211n && hapd->iconf->require_ht && count < 8) {
75 0 : count++;
76 0 : *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY;
77 : }
78 :
79 0 : if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht && count < 8) {
80 0 : count++;
81 0 : *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY;
82 : }
83 :
84 0 : return pos;
85 : }
86 :
87 :
88 2 : u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid)
89 : {
90 2 : u8 *pos = eid;
91 : int i, num, count;
92 :
93 2 : if (hapd->iface->current_rates == NULL)
94 2 : return eid;
95 :
96 0 : num = hapd->iface->num_rates;
97 0 : if (hapd->iconf->ieee80211n && hapd->iconf->require_ht)
98 0 : num++;
99 0 : if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht)
100 0 : num++;
101 0 : if (num <= 8)
102 0 : return eid;
103 0 : num -= 8;
104 :
105 0 : *pos++ = WLAN_EID_EXT_SUPP_RATES;
106 0 : *pos++ = num;
107 0 : for (i = 0, count = 0; i < hapd->iface->num_rates && count < num + 8;
108 0 : i++) {
109 0 : count++;
110 0 : if (count <= 8)
111 0 : continue; /* already in SuppRates IE */
112 0 : *pos = hapd->iface->current_rates[i].rate / 5;
113 0 : if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
114 0 : *pos |= 0x80;
115 0 : pos++;
116 : }
117 :
118 0 : if (hapd->iconf->ieee80211n && hapd->iconf->require_ht) {
119 0 : count++;
120 0 : if (count > 8)
121 0 : *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY;
122 : }
123 :
124 0 : if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht) {
125 0 : count++;
126 0 : if (count > 8)
127 0 : *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY;
128 : }
129 :
130 0 : return pos;
131 : }
132 :
133 :
134 2 : u16 hostapd_own_capab_info(struct hostapd_data *hapd, struct sta_info *sta,
135 : int probe)
136 : {
137 2 : int capab = WLAN_CAPABILITY_ESS;
138 : int privacy;
139 : int dfs;
140 :
141 : /* Check if any of configured channels require DFS */
142 2 : dfs = hostapd_is_dfs_required(hapd->iface);
143 2 : if (dfs < 0) {
144 0 : wpa_printf(MSG_WARNING, "Failed to check if DFS is required; ret=%d",
145 : dfs);
146 0 : dfs = 0;
147 : }
148 :
149 4 : if (hapd->iface->num_sta_no_short_preamble == 0 &&
150 2 : hapd->iconf->preamble == SHORT_PREAMBLE)
151 0 : capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
152 :
153 2 : privacy = hapd->conf->ssid.wep.keys_set;
154 :
155 2 : if (hapd->conf->ieee802_1x &&
156 0 : (hapd->conf->default_wep_key_len ||
157 0 : hapd->conf->individual_wep_key_len))
158 0 : privacy = 1;
159 :
160 2 : if (hapd->conf->wpa)
161 0 : privacy = 1;
162 :
163 : #ifdef CONFIG_HS20
164 2 : if (hapd->conf->osen)
165 0 : privacy = 1;
166 : #endif /* CONFIG_HS20 */
167 :
168 2 : if (sta) {
169 : int policy, def_klen;
170 0 : if (probe && sta->ssid_probe) {
171 0 : policy = sta->ssid_probe->security_policy;
172 0 : def_klen = sta->ssid_probe->wep.default_len;
173 : } else {
174 0 : policy = sta->ssid->security_policy;
175 0 : def_klen = sta->ssid->wep.default_len;
176 : }
177 0 : privacy = policy != SECURITY_PLAINTEXT;
178 0 : if (policy == SECURITY_IEEE_802_1X && def_klen == 0)
179 0 : privacy = 0;
180 : }
181 :
182 2 : if (privacy)
183 0 : capab |= WLAN_CAPABILITY_PRIVACY;
184 :
185 2 : if (hapd->iface->current_mode &&
186 0 : hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G &&
187 0 : hapd->iface->num_sta_no_short_slot_time == 0)
188 0 : capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
189 :
190 : /*
191 : * Currently, Spectrum Management capability bit is set when directly
192 : * requested in configuration by spectrum_mgmt_required or when AP is
193 : * running on DFS channel.
194 : * TODO: Also consider driver support for TPC to set Spectrum Mgmt bit
195 : */
196 2 : if (hapd->iface->current_mode &&
197 0 : hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211A &&
198 0 : (hapd->iconf->spectrum_mgmt_required || dfs))
199 0 : capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
200 :
201 2 : return capab;
202 : }
203 :
204 :
205 0 : static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta,
206 : u16 auth_transaction, const u8 *challenge,
207 : int iswep)
208 : {
209 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
210 : HOSTAPD_LEVEL_DEBUG,
211 : "authentication (shared key, transaction %d)",
212 : auth_transaction);
213 :
214 0 : if (auth_transaction == 1) {
215 0 : if (!sta->challenge) {
216 : /* Generate a pseudo-random challenge */
217 : u8 key[8];
218 : struct os_time now;
219 : int r;
220 0 : sta->challenge = os_zalloc(WLAN_AUTH_CHALLENGE_LEN);
221 0 : if (sta->challenge == NULL)
222 0 : return WLAN_STATUS_UNSPECIFIED_FAILURE;
223 :
224 0 : os_get_time(&now);
225 0 : r = os_random();
226 0 : os_memcpy(key, &now.sec, 4);
227 0 : os_memcpy(key + 4, &r, 4);
228 0 : rc4_skip(key, sizeof(key), 0,
229 : sta->challenge, WLAN_AUTH_CHALLENGE_LEN);
230 : }
231 0 : return 0;
232 : }
233 :
234 0 : if (auth_transaction != 3)
235 0 : return WLAN_STATUS_UNSPECIFIED_FAILURE;
236 :
237 : /* Transaction 3 */
238 0 : if (!iswep || !sta->challenge || !challenge ||
239 0 : os_memcmp(sta->challenge, challenge, WLAN_AUTH_CHALLENGE_LEN)) {
240 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
241 : HOSTAPD_LEVEL_INFO,
242 : "shared key authentication - invalid "
243 : "challenge-response");
244 0 : return WLAN_STATUS_CHALLENGE_FAIL;
245 : }
246 :
247 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
248 : HOSTAPD_LEVEL_DEBUG,
249 : "authentication OK (shared key)");
250 0 : sta->flags |= WLAN_STA_AUTH;
251 0 : wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
252 0 : os_free(sta->challenge);
253 0 : sta->challenge = NULL;
254 :
255 0 : return 0;
256 : }
257 :
258 :
259 0 : static void send_auth_reply(struct hostapd_data *hapd,
260 : const u8 *dst, const u8 *bssid,
261 : u16 auth_alg, u16 auth_transaction, u16 resp,
262 : const u8 *ies, size_t ies_len)
263 : {
264 : struct ieee80211_mgmt *reply;
265 : u8 *buf;
266 : size_t rlen;
267 :
268 0 : rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth) + ies_len;
269 0 : buf = os_zalloc(rlen);
270 0 : if (buf == NULL)
271 0 : return;
272 :
273 0 : reply = (struct ieee80211_mgmt *) buf;
274 0 : reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
275 : WLAN_FC_STYPE_AUTH);
276 0 : os_memcpy(reply->da, dst, ETH_ALEN);
277 0 : os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
278 0 : os_memcpy(reply->bssid, bssid, ETH_ALEN);
279 :
280 0 : reply->u.auth.auth_alg = host_to_le16(auth_alg);
281 0 : reply->u.auth.auth_transaction = host_to_le16(auth_transaction);
282 0 : reply->u.auth.status_code = host_to_le16(resp);
283 :
284 0 : if (ies && ies_len)
285 0 : os_memcpy(reply->u.auth.variable, ies, ies_len);
286 :
287 0 : wpa_printf(MSG_DEBUG, "authentication reply: STA=" MACSTR
288 : " auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu)",
289 0 : MAC2STR(dst), auth_alg, auth_transaction,
290 : resp, (unsigned long) ies_len);
291 0 : if (hostapd_drv_send_mlme(hapd, reply, rlen, 0) < 0)
292 0 : wpa_printf(MSG_INFO, "send_auth_reply: send");
293 :
294 0 : os_free(buf);
295 : }
296 :
297 :
298 : #ifdef CONFIG_IEEE80211R
299 0 : static void handle_auth_ft_finish(void *ctx, const u8 *dst, const u8 *bssid,
300 : u16 auth_transaction, u16 status,
301 : const u8 *ies, size_t ies_len)
302 : {
303 0 : struct hostapd_data *hapd = ctx;
304 : struct sta_info *sta;
305 :
306 0 : send_auth_reply(hapd, dst, bssid, WLAN_AUTH_FT, auth_transaction,
307 : status, ies, ies_len);
308 :
309 0 : if (status != WLAN_STATUS_SUCCESS)
310 0 : return;
311 :
312 0 : sta = ap_get_sta(hapd, dst);
313 0 : if (sta == NULL)
314 0 : return;
315 :
316 0 : hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211,
317 : HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)");
318 0 : sta->flags |= WLAN_STA_AUTH;
319 0 : mlme_authenticate_indication(hapd, sta);
320 : }
321 : #endif /* CONFIG_IEEE80211R */
322 :
323 :
324 : #ifdef CONFIG_SAE
325 :
326 0 : static struct wpabuf * auth_process_sae_commit(struct hostapd_data *hapd,
327 : struct sta_info *sta)
328 : {
329 : struct wpabuf *buf;
330 :
331 0 : if (hapd->conf->ssid.wpa_passphrase == NULL) {
332 0 : wpa_printf(MSG_DEBUG, "SAE: No password available");
333 0 : return NULL;
334 : }
335 :
336 0 : if (sae_prepare_commit(hapd->own_addr, sta->addr,
337 0 : (u8 *) hapd->conf->ssid.wpa_passphrase,
338 0 : os_strlen(hapd->conf->ssid.wpa_passphrase),
339 : sta->sae) < 0) {
340 0 : wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE");
341 0 : return NULL;
342 : }
343 :
344 0 : if (sae_process_commit(sta->sae) < 0) {
345 0 : wpa_printf(MSG_DEBUG, "SAE: Failed to process peer commit");
346 0 : return NULL;
347 : }
348 :
349 0 : buf = wpabuf_alloc(SAE_COMMIT_MAX_LEN);
350 0 : if (buf == NULL)
351 0 : return NULL;
352 0 : sae_write_commit(sta->sae, buf, NULL);
353 :
354 0 : return buf;
355 : }
356 :
357 :
358 0 : static struct wpabuf * auth_build_sae_confirm(struct hostapd_data *hapd,
359 : struct sta_info *sta)
360 : {
361 : struct wpabuf *buf;
362 :
363 0 : buf = wpabuf_alloc(SAE_CONFIRM_MAX_LEN);
364 0 : if (buf == NULL)
365 0 : return NULL;
366 :
367 0 : sae_write_confirm(sta->sae, buf);
368 :
369 0 : return buf;
370 : }
371 :
372 :
373 0 : static int use_sae_anti_clogging(struct hostapd_data *hapd)
374 : {
375 : struct sta_info *sta;
376 0 : unsigned int open = 0;
377 :
378 0 : if (hapd->conf->sae_anti_clogging_threshold == 0)
379 0 : return 1;
380 :
381 0 : for (sta = hapd->sta_list; sta; sta = sta->next) {
382 0 : if (!sta->sae)
383 0 : continue;
384 0 : if (sta->sae->state != SAE_COMMITTED &&
385 0 : sta->sae->state != SAE_CONFIRMED)
386 0 : continue;
387 0 : open++;
388 0 : if (open >= hapd->conf->sae_anti_clogging_threshold)
389 0 : return 1;
390 : }
391 :
392 0 : return 0;
393 : }
394 :
395 :
396 0 : static int check_sae_token(struct hostapd_data *hapd, const u8 *addr,
397 : const u8 *token, size_t token_len)
398 : {
399 : u8 mac[SHA256_MAC_LEN];
400 :
401 0 : if (token_len != SHA256_MAC_LEN)
402 0 : return -1;
403 0 : if (hmac_sha256(hapd->sae_token_key, sizeof(hapd->sae_token_key),
404 0 : addr, ETH_ALEN, mac) < 0 ||
405 0 : os_memcmp(token, mac, SHA256_MAC_LEN) != 0)
406 0 : return -1;
407 :
408 0 : return 0;
409 : }
410 :
411 :
412 0 : static struct wpabuf * auth_build_token_req(struct hostapd_data *hapd,
413 : const u8 *addr)
414 : {
415 : struct wpabuf *buf;
416 : u8 *token;
417 : struct os_reltime now;
418 :
419 0 : os_get_reltime(&now);
420 0 : if (!os_reltime_initialized(&hapd->last_sae_token_key_update) ||
421 0 : os_reltime_expired(&now, &hapd->last_sae_token_key_update, 60)) {
422 0 : if (random_get_bytes(hapd->sae_token_key,
423 : sizeof(hapd->sae_token_key)) < 0)
424 0 : return NULL;
425 0 : wpa_hexdump(MSG_DEBUG, "SAE: Updated token key",
426 0 : hapd->sae_token_key, sizeof(hapd->sae_token_key));
427 0 : hapd->last_sae_token_key_update = now;
428 : }
429 :
430 0 : buf = wpabuf_alloc(SHA256_MAC_LEN);
431 0 : if (buf == NULL)
432 0 : return NULL;
433 :
434 0 : token = wpabuf_put(buf, SHA256_MAC_LEN);
435 0 : hmac_sha256(hapd->sae_token_key, sizeof(hapd->sae_token_key),
436 : addr, ETH_ALEN, token);
437 :
438 0 : return buf;
439 : }
440 :
441 :
442 0 : static void handle_auth_sae(struct hostapd_data *hapd, struct sta_info *sta,
443 : const struct ieee80211_mgmt *mgmt, size_t len,
444 : u8 auth_transaction)
445 : {
446 0 : u16 resp = WLAN_STATUS_SUCCESS;
447 0 : struct wpabuf *data = NULL;
448 :
449 0 : if (!sta->sae) {
450 0 : if (auth_transaction != 1)
451 0 : return;
452 0 : sta->sae = os_zalloc(sizeof(*sta->sae));
453 0 : if (sta->sae == NULL)
454 0 : return;
455 0 : sta->sae->state = SAE_NOTHING;
456 : }
457 :
458 0 : if (auth_transaction == 1) {
459 0 : const u8 *token = NULL;
460 0 : size_t token_len = 0;
461 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
462 : HOSTAPD_LEVEL_DEBUG,
463 : "start SAE authentication (RX commit)");
464 0 : resp = sae_parse_commit(sta->sae, mgmt->u.auth.variable,
465 0 : ((const u8 *) mgmt) + len -
466 : mgmt->u.auth.variable, &token,
467 0 : &token_len, hapd->conf->sae_groups);
468 0 : if (token && check_sae_token(hapd, sta->addr, token, token_len)
469 : < 0) {
470 0 : wpa_printf(MSG_DEBUG, "SAE: Drop commit message with "
471 : "incorrect token from " MACSTR,
472 0 : MAC2STR(sta->addr));
473 0 : return;
474 : }
475 :
476 0 : if (resp == WLAN_STATUS_SUCCESS) {
477 0 : if (!token && use_sae_anti_clogging(hapd)) {
478 0 : wpa_printf(MSG_DEBUG, "SAE: Request anti-"
479 : "clogging token from " MACSTR,
480 0 : MAC2STR(sta->addr));
481 0 : data = auth_build_token_req(hapd, sta->addr);
482 0 : resp = WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ;
483 : } else {
484 0 : data = auth_process_sae_commit(hapd, sta);
485 0 : if (data == NULL)
486 0 : resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
487 : else
488 0 : sta->sae->state = SAE_COMMITTED;
489 : }
490 : }
491 0 : } else if (auth_transaction == 2) {
492 0 : if (sta->sae->state != SAE_COMMITTED) {
493 0 : hostapd_logger(hapd, sta->addr,
494 : HOSTAPD_MODULE_IEEE80211,
495 : HOSTAPD_LEVEL_DEBUG,
496 : "SAE confirm before commit");
497 0 : resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
498 0 : goto failed;
499 : }
500 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
501 : HOSTAPD_LEVEL_DEBUG,
502 : "SAE authentication (RX confirm)");
503 0 : if (sae_check_confirm(sta->sae, mgmt->u.auth.variable,
504 0 : ((u8 *) mgmt) + len -
505 : mgmt->u.auth.variable) < 0) {
506 0 : resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
507 : } else {
508 0 : resp = WLAN_STATUS_SUCCESS;
509 0 : sta->flags |= WLAN_STA_AUTH;
510 0 : wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
511 0 : sta->auth_alg = WLAN_AUTH_SAE;
512 0 : mlme_authenticate_indication(hapd, sta);
513 :
514 0 : data = auth_build_sae_confirm(hapd, sta);
515 0 : if (data == NULL)
516 0 : resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
517 : else {
518 0 : sta->sae->state = SAE_ACCEPTED;
519 0 : sae_clear_temp_data(sta->sae);
520 : }
521 : }
522 : } else {
523 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
524 : HOSTAPD_LEVEL_DEBUG,
525 : "unexpected SAE authentication transaction %u",
526 : auth_transaction);
527 0 : resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
528 : }
529 :
530 : failed:
531 0 : sta->auth_alg = WLAN_AUTH_SAE;
532 :
533 0 : send_auth_reply(hapd, mgmt->sa, mgmt->bssid, WLAN_AUTH_SAE,
534 : auth_transaction, resp,
535 : data ? wpabuf_head(data) : (u8 *) "",
536 : data ? wpabuf_len(data) : 0);
537 0 : wpabuf_free(data);
538 : }
539 : #endif /* CONFIG_SAE */
540 :
541 :
542 0 : static void handle_auth(struct hostapd_data *hapd,
543 : const struct ieee80211_mgmt *mgmt, size_t len)
544 : {
545 : u16 auth_alg, auth_transaction, status_code;
546 0 : u16 resp = WLAN_STATUS_SUCCESS;
547 0 : struct sta_info *sta = NULL;
548 : int res;
549 : u16 fc;
550 0 : const u8 *challenge = NULL;
551 : u32 session_timeout, acct_interim_interval;
552 0 : int vlan_id = 0;
553 0 : struct hostapd_sta_wpa_psk_short *psk = NULL;
554 : u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN];
555 0 : size_t resp_ies_len = 0;
556 0 : char *identity = NULL;
557 0 : char *radius_cui = NULL;
558 :
559 0 : if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
560 0 : wpa_printf(MSG_INFO, "handle_auth - too short payload (len=%lu)",
561 : (unsigned long) len);
562 0 : return;
563 : }
564 :
565 : #ifdef CONFIG_TESTING_OPTIONS
566 0 : if (hapd->iconf->ignore_auth_probability > 0.0 &&
567 0 : drand48() < hapd->iconf->ignore_auth_probability) {
568 0 : wpa_printf(MSG_INFO,
569 : "TESTING: ignoring auth frame from " MACSTR,
570 0 : MAC2STR(mgmt->sa));
571 0 : return;
572 : }
573 : #endif /* CONFIG_TESTING_OPTIONS */
574 :
575 0 : auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
576 0 : auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
577 0 : status_code = le_to_host16(mgmt->u.auth.status_code);
578 0 : fc = le_to_host16(mgmt->frame_control);
579 :
580 0 : if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) +
581 0 : 2 + WLAN_AUTH_CHALLENGE_LEN &&
582 0 : mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE &&
583 0 : mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN)
584 0 : challenge = &mgmt->u.auth.variable[2];
585 :
586 0 : wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d "
587 : "auth_transaction=%d status_code=%d wep=%d%s",
588 0 : MAC2STR(mgmt->sa), auth_alg, auth_transaction,
589 0 : status_code, !!(fc & WLAN_FC_ISWEP),
590 : challenge ? " challenge" : "");
591 :
592 0 : if (hapd->tkip_countermeasures) {
593 0 : resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
594 0 : goto fail;
595 : }
596 :
597 0 : if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) &&
598 0 : auth_alg == WLAN_AUTH_OPEN) ||
599 : #ifdef CONFIG_IEEE80211R
600 0 : (hapd->conf->wpa && wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt) &&
601 0 : auth_alg == WLAN_AUTH_FT) ||
602 : #endif /* CONFIG_IEEE80211R */
603 : #ifdef CONFIG_SAE
604 0 : (hapd->conf->wpa && wpa_key_mgmt_sae(hapd->conf->wpa_key_mgmt) &&
605 : auth_alg == WLAN_AUTH_SAE) ||
606 : #endif /* CONFIG_SAE */
607 0 : ((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) &&
608 : auth_alg == WLAN_AUTH_SHARED_KEY))) {
609 0 : wpa_printf(MSG_INFO, "Unsupported authentication algorithm (%d)",
610 : auth_alg);
611 0 : resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
612 0 : goto fail;
613 : }
614 :
615 0 : if (!(auth_transaction == 1 || auth_alg == WLAN_AUTH_SAE ||
616 0 : (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) {
617 0 : wpa_printf(MSG_INFO, "Unknown authentication transaction number (%d)",
618 : auth_transaction);
619 0 : resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
620 0 : goto fail;
621 : }
622 :
623 0 : if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) {
624 0 : wpa_printf(MSG_INFO, "Station " MACSTR " not allowed to authenticate",
625 0 : MAC2STR(mgmt->sa));
626 0 : resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
627 0 : goto fail;
628 : }
629 :
630 0 : res = hostapd_allowed_address(hapd, mgmt->sa, (u8 *) mgmt, len,
631 : &session_timeout,
632 : &acct_interim_interval, &vlan_id,
633 : &psk, &identity, &radius_cui);
634 :
635 0 : if (res == HOSTAPD_ACL_REJECT) {
636 0 : wpa_printf(MSG_INFO, "Station " MACSTR " not allowed to authenticate",
637 0 : MAC2STR(mgmt->sa));
638 0 : resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
639 0 : goto fail;
640 : }
641 0 : if (res == HOSTAPD_ACL_PENDING) {
642 0 : wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR
643 : " waiting for an external authentication",
644 0 : MAC2STR(mgmt->sa));
645 : /* Authentication code will re-send the authentication frame
646 : * after it has received (and cached) information from the
647 : * external source. */
648 0 : return;
649 : }
650 :
651 0 : sta = ap_sta_add(hapd, mgmt->sa);
652 0 : if (!sta) {
653 0 : resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
654 0 : goto fail;
655 : }
656 :
657 0 : if (vlan_id > 0) {
658 0 : if (!hostapd_vlan_id_valid(hapd->conf->vlan, vlan_id)) {
659 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
660 : HOSTAPD_LEVEL_INFO, "Invalid VLAN ID "
661 : "%d received from RADIUS server",
662 : vlan_id);
663 0 : resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
664 0 : goto fail;
665 : }
666 0 : sta->vlan_id = vlan_id;
667 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
668 : HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id);
669 : }
670 :
671 0 : hostapd_free_psk_list(sta->psk);
672 0 : if (hapd->conf->wpa_psk_radius != PSK_RADIUS_IGNORED) {
673 0 : sta->psk = psk;
674 0 : psk = NULL;
675 : } else {
676 0 : sta->psk = NULL;
677 : }
678 :
679 0 : sta->identity = identity;
680 0 : identity = NULL;
681 0 : sta->radius_cui = radius_cui;
682 0 : radius_cui = NULL;
683 :
684 0 : sta->flags &= ~WLAN_STA_PREAUTH;
685 0 : ieee802_1x_notify_pre_auth(sta->eapol_sm, 0);
686 :
687 0 : if (hapd->conf->acct_interim_interval == 0 && acct_interim_interval)
688 0 : sta->acct_interim_interval = acct_interim_interval;
689 0 : if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT)
690 0 : ap_sta_session_timeout(hapd, sta, session_timeout);
691 : else
692 0 : ap_sta_no_session_timeout(hapd, sta);
693 :
694 0 : switch (auth_alg) {
695 : case WLAN_AUTH_OPEN:
696 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
697 : HOSTAPD_LEVEL_DEBUG,
698 : "authentication OK (open system)");
699 0 : sta->flags |= WLAN_STA_AUTH;
700 0 : wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
701 0 : sta->auth_alg = WLAN_AUTH_OPEN;
702 0 : mlme_authenticate_indication(hapd, sta);
703 0 : break;
704 : case WLAN_AUTH_SHARED_KEY:
705 0 : resp = auth_shared_key(hapd, sta, auth_transaction, challenge,
706 : fc & WLAN_FC_ISWEP);
707 0 : sta->auth_alg = WLAN_AUTH_SHARED_KEY;
708 0 : mlme_authenticate_indication(hapd, sta);
709 0 : if (sta->challenge && auth_transaction == 1) {
710 0 : resp_ies[0] = WLAN_EID_CHALLENGE;
711 0 : resp_ies[1] = WLAN_AUTH_CHALLENGE_LEN;
712 0 : os_memcpy(resp_ies + 2, sta->challenge,
713 : WLAN_AUTH_CHALLENGE_LEN);
714 0 : resp_ies_len = 2 + WLAN_AUTH_CHALLENGE_LEN;
715 : }
716 0 : break;
717 : #ifdef CONFIG_IEEE80211R
718 : case WLAN_AUTH_FT:
719 0 : sta->auth_alg = WLAN_AUTH_FT;
720 0 : if (sta->wpa_sm == NULL)
721 0 : sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
722 0 : sta->addr, NULL);
723 0 : if (sta->wpa_sm == NULL) {
724 0 : wpa_printf(MSG_DEBUG, "FT: Failed to initialize WPA "
725 : "state machine");
726 0 : resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
727 0 : goto fail;
728 : }
729 0 : wpa_ft_process_auth(sta->wpa_sm, mgmt->bssid,
730 0 : auth_transaction, mgmt->u.auth.variable,
731 : len - IEEE80211_HDRLEN -
732 : sizeof(mgmt->u.auth),
733 : handle_auth_ft_finish, hapd);
734 : /* handle_auth_ft_finish() callback will complete auth. */
735 0 : return;
736 : #endif /* CONFIG_IEEE80211R */
737 : #ifdef CONFIG_SAE
738 : case WLAN_AUTH_SAE:
739 0 : handle_auth_sae(hapd, sta, mgmt, len, auth_transaction);
740 0 : return;
741 : #endif /* CONFIG_SAE */
742 : }
743 :
744 : fail:
745 0 : os_free(identity);
746 0 : os_free(radius_cui);
747 0 : hostapd_free_psk_list(psk);
748 :
749 0 : send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg,
750 : auth_transaction + 1, resp, resp_ies, resp_ies_len);
751 : }
752 :
753 :
754 0 : static int hostapd_get_aid(struct hostapd_data *hapd, struct sta_info *sta)
755 : {
756 0 : int i, j = 32, aid;
757 :
758 : /* get a unique AID */
759 0 : if (sta->aid > 0) {
760 0 : wpa_printf(MSG_DEBUG, " old AID %d", sta->aid);
761 0 : return 0;
762 : }
763 :
764 0 : for (i = 0; i < AID_WORDS; i++) {
765 0 : if (hapd->sta_aid[i] == (u32) -1)
766 0 : continue;
767 0 : for (j = 0; j < 32; j++) {
768 0 : if (!(hapd->sta_aid[i] & BIT(j)))
769 0 : break;
770 : }
771 0 : if (j < 32)
772 0 : break;
773 : }
774 0 : if (j == 32)
775 0 : return -1;
776 0 : aid = i * 32 + j + 1;
777 0 : if (aid > 2007)
778 0 : return -1;
779 :
780 0 : sta->aid = aid;
781 0 : hapd->sta_aid[i] |= BIT(j);
782 0 : wpa_printf(MSG_DEBUG, " new AID %d", sta->aid);
783 0 : return 0;
784 : }
785 :
786 :
787 0 : static u16 check_ssid(struct hostapd_data *hapd, struct sta_info *sta,
788 : const u8 *ssid_ie, size_t ssid_ie_len)
789 : {
790 0 : if (ssid_ie == NULL)
791 0 : return WLAN_STATUS_UNSPECIFIED_FAILURE;
792 :
793 0 : if (ssid_ie_len != hapd->conf->ssid.ssid_len ||
794 0 : os_memcmp(ssid_ie, hapd->conf->ssid.ssid, ssid_ie_len) != 0) {
795 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
796 : HOSTAPD_LEVEL_INFO,
797 : "Station tried to associate with unknown SSID "
798 : "'%s'", wpa_ssid_txt(ssid_ie, ssid_ie_len));
799 0 : return WLAN_STATUS_UNSPECIFIED_FAILURE;
800 : }
801 :
802 0 : return WLAN_STATUS_SUCCESS;
803 : }
804 :
805 :
806 0 : static u16 check_wmm(struct hostapd_data *hapd, struct sta_info *sta,
807 : const u8 *wmm_ie, size_t wmm_ie_len)
808 : {
809 0 : sta->flags &= ~WLAN_STA_WMM;
810 0 : sta->qosinfo = 0;
811 0 : if (wmm_ie && hapd->conf->wmm_enabled) {
812 : struct wmm_information_element *wmm;
813 :
814 0 : if (!hostapd_eid_wmm_valid(hapd, wmm_ie, wmm_ie_len)) {
815 0 : hostapd_logger(hapd, sta->addr,
816 : HOSTAPD_MODULE_WPA,
817 : HOSTAPD_LEVEL_DEBUG,
818 : "invalid WMM element in association "
819 : "request");
820 0 : return WLAN_STATUS_UNSPECIFIED_FAILURE;
821 : }
822 :
823 0 : sta->flags |= WLAN_STA_WMM;
824 0 : wmm = (struct wmm_information_element *) wmm_ie;
825 0 : sta->qosinfo = wmm->qos_info;
826 : }
827 0 : return WLAN_STATUS_SUCCESS;
828 : }
829 :
830 :
831 0 : static u16 copy_supp_rates(struct hostapd_data *hapd, struct sta_info *sta,
832 : struct ieee802_11_elems *elems)
833 : {
834 0 : if (!elems->supp_rates) {
835 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
836 : HOSTAPD_LEVEL_DEBUG,
837 : "No supported rates element in AssocReq");
838 0 : return WLAN_STATUS_UNSPECIFIED_FAILURE;
839 : }
840 :
841 0 : if (elems->supp_rates_len + elems->ext_supp_rates_len >
842 : sizeof(sta->supported_rates)) {
843 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
844 : HOSTAPD_LEVEL_DEBUG,
845 : "Invalid supported rates element length %d+%d",
846 0 : elems->supp_rates_len,
847 0 : elems->ext_supp_rates_len);
848 0 : return WLAN_STATUS_UNSPECIFIED_FAILURE;
849 : }
850 :
851 0 : sta->supported_rates_len = merge_byte_arrays(
852 0 : sta->supported_rates, sizeof(sta->supported_rates),
853 0 : elems->supp_rates, elems->supp_rates_len,
854 0 : elems->ext_supp_rates, elems->ext_supp_rates_len);
855 :
856 0 : return WLAN_STATUS_SUCCESS;
857 : }
858 :
859 :
860 0 : static u16 check_ext_capab(struct hostapd_data *hapd, struct sta_info *sta,
861 : const u8 *ext_capab_ie, size_t ext_capab_ie_len)
862 : {
863 : #ifdef CONFIG_INTERWORKING
864 : /* check for QoS Map support */
865 0 : if (ext_capab_ie_len >= 5) {
866 0 : if (ext_capab_ie[4] & 0x01)
867 0 : sta->qos_map_enabled = 1;
868 : }
869 : #endif /* CONFIG_INTERWORKING */
870 :
871 0 : return WLAN_STATUS_SUCCESS;
872 : }
873 :
874 :
875 0 : static u16 check_assoc_ies(struct hostapd_data *hapd, struct sta_info *sta,
876 : const u8 *ies, size_t ies_len, int reassoc)
877 : {
878 : struct ieee802_11_elems elems;
879 : u16 resp;
880 : const u8 *wpa_ie;
881 : size_t wpa_ie_len;
882 0 : const u8 *p2p_dev_addr = NULL;
883 :
884 0 : if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) {
885 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
886 : HOSTAPD_LEVEL_INFO, "Station sent an invalid "
887 : "association request");
888 0 : return WLAN_STATUS_UNSPECIFIED_FAILURE;
889 : }
890 :
891 0 : resp = check_ssid(hapd, sta, elems.ssid, elems.ssid_len);
892 0 : if (resp != WLAN_STATUS_SUCCESS)
893 0 : return resp;
894 0 : resp = check_wmm(hapd, sta, elems.wmm, elems.wmm_len);
895 0 : if (resp != WLAN_STATUS_SUCCESS)
896 0 : return resp;
897 0 : resp = check_ext_capab(hapd, sta, elems.ext_capab, elems.ext_capab_len);
898 0 : if (resp != WLAN_STATUS_SUCCESS)
899 0 : return resp;
900 0 : resp = copy_supp_rates(hapd, sta, &elems);
901 0 : if (resp != WLAN_STATUS_SUCCESS)
902 0 : return resp;
903 : #ifdef CONFIG_IEEE80211N
904 0 : resp = copy_sta_ht_capab(hapd, sta, elems.ht_capabilities,
905 0 : elems.ht_capabilities_len);
906 0 : if (resp != WLAN_STATUS_SUCCESS)
907 0 : return resp;
908 0 : if (hapd->iconf->ieee80211n && hapd->iconf->require_ht &&
909 0 : !(sta->flags & WLAN_STA_HT)) {
910 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
911 : HOSTAPD_LEVEL_INFO, "Station does not support "
912 : "mandatory HT PHY - reject association");
913 0 : return WLAN_STATUS_ASSOC_DENIED_NO_HT;
914 : }
915 : #endif /* CONFIG_IEEE80211N */
916 :
917 : #ifdef CONFIG_IEEE80211AC
918 0 : resp = copy_sta_vht_capab(hapd, sta, elems.vht_capabilities,
919 0 : elems.vht_capabilities_len);
920 0 : if (resp != WLAN_STATUS_SUCCESS)
921 0 : return resp;
922 :
923 0 : resp = set_sta_vht_opmode(hapd, sta, elems.vht_opmode_notif);
924 0 : if (resp != WLAN_STATUS_SUCCESS)
925 0 : return resp;
926 :
927 0 : if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht &&
928 0 : !(sta->flags & WLAN_STA_VHT)) {
929 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
930 : HOSTAPD_LEVEL_INFO, "Station does not support "
931 : "mandatory VHT PHY - reject association");
932 0 : return WLAN_STATUS_ASSOC_DENIED_NO_VHT;
933 : }
934 : #endif /* CONFIG_IEEE80211AC */
935 :
936 : #ifdef CONFIG_P2P
937 : if (elems.p2p) {
938 : wpabuf_free(sta->p2p_ie);
939 : sta->p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
940 : P2P_IE_VENDOR_TYPE);
941 : if (sta->p2p_ie)
942 : p2p_dev_addr = p2p_get_go_dev_addr(sta->p2p_ie);
943 : } else {
944 : wpabuf_free(sta->p2p_ie);
945 : sta->p2p_ie = NULL;
946 : }
947 : #endif /* CONFIG_P2P */
948 :
949 0 : if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) {
950 0 : wpa_ie = elems.rsn_ie;
951 0 : wpa_ie_len = elems.rsn_ie_len;
952 0 : } else if ((hapd->conf->wpa & WPA_PROTO_WPA) &&
953 0 : elems.wpa_ie) {
954 0 : wpa_ie = elems.wpa_ie;
955 0 : wpa_ie_len = elems.wpa_ie_len;
956 : } else {
957 0 : wpa_ie = NULL;
958 0 : wpa_ie_len = 0;
959 : }
960 :
961 : #ifdef CONFIG_WPS
962 0 : sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS | WLAN_STA_WPS2);
963 0 : if (hapd->conf->wps_state && elems.wps_ie) {
964 0 : wpa_printf(MSG_DEBUG, "STA included WPS IE in (Re)Association "
965 : "Request - assume WPS is used");
966 0 : sta->flags |= WLAN_STA_WPS;
967 0 : wpabuf_free(sta->wps_ie);
968 0 : sta->wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
969 : WPS_IE_VENDOR_TYPE);
970 0 : if (sta->wps_ie && wps_is_20(sta->wps_ie)) {
971 0 : wpa_printf(MSG_DEBUG, "WPS: STA supports WPS 2.0");
972 0 : sta->flags |= WLAN_STA_WPS2;
973 : }
974 0 : wpa_ie = NULL;
975 0 : wpa_ie_len = 0;
976 0 : if (sta->wps_ie && wps_validate_assoc_req(sta->wps_ie) < 0) {
977 0 : wpa_printf(MSG_DEBUG, "WPS: Invalid WPS IE in "
978 : "(Re)Association Request - reject");
979 0 : return WLAN_STATUS_INVALID_IE;
980 : }
981 0 : } else if (hapd->conf->wps_state && wpa_ie == NULL) {
982 0 : wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE in "
983 : "(Re)Association Request - possible WPS use");
984 0 : sta->flags |= WLAN_STA_MAYBE_WPS;
985 : } else
986 : #endif /* CONFIG_WPS */
987 0 : if (hapd->conf->wpa && wpa_ie == NULL) {
988 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
989 : HOSTAPD_LEVEL_INFO,
990 : "No WPA/RSN IE in association request");
991 0 : return WLAN_STATUS_INVALID_IE;
992 : }
993 :
994 0 : if (hapd->conf->wpa && wpa_ie) {
995 : int res;
996 0 : wpa_ie -= 2;
997 0 : wpa_ie_len += 2;
998 0 : if (sta->wpa_sm == NULL)
999 0 : sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
1000 0 : sta->addr,
1001 : p2p_dev_addr);
1002 0 : if (sta->wpa_sm == NULL) {
1003 0 : wpa_printf(MSG_WARNING, "Failed to initialize WPA "
1004 : "state machine");
1005 0 : return WLAN_STATUS_UNSPECIFIED_FAILURE;
1006 : }
1007 0 : res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
1008 : wpa_ie, wpa_ie_len,
1009 0 : elems.mdie, elems.mdie_len);
1010 0 : if (res == WPA_INVALID_GROUP)
1011 0 : resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
1012 0 : else if (res == WPA_INVALID_PAIRWISE)
1013 0 : resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
1014 0 : else if (res == WPA_INVALID_AKMP)
1015 0 : resp = WLAN_STATUS_AKMP_NOT_VALID;
1016 0 : else if (res == WPA_ALLOC_FAIL)
1017 0 : resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1018 : #ifdef CONFIG_IEEE80211W
1019 0 : else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION)
1020 0 : resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
1021 0 : else if (res == WPA_INVALID_MGMT_GROUP_CIPHER)
1022 0 : resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
1023 : #endif /* CONFIG_IEEE80211W */
1024 0 : else if (res == WPA_INVALID_MDIE)
1025 0 : resp = WLAN_STATUS_INVALID_MDIE;
1026 0 : else if (res != WPA_IE_OK)
1027 0 : resp = WLAN_STATUS_INVALID_IE;
1028 0 : if (resp != WLAN_STATUS_SUCCESS)
1029 0 : return resp;
1030 : #ifdef CONFIG_IEEE80211W
1031 0 : if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
1032 0 : sta->sa_query_count > 0)
1033 0 : ap_check_sa_query_timeout(hapd, sta);
1034 0 : if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
1035 0 : (!reassoc || sta->auth_alg != WLAN_AUTH_FT)) {
1036 : /*
1037 : * STA has already been associated with MFP and SA
1038 : * Query timeout has not been reached. Reject the
1039 : * association attempt temporarily and start SA Query,
1040 : * if one is not pending.
1041 : */
1042 :
1043 0 : if (sta->sa_query_count == 0)
1044 0 : ap_sta_start_sa_query(hapd, sta);
1045 :
1046 0 : return WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;
1047 : }
1048 :
1049 0 : if (wpa_auth_uses_mfp(sta->wpa_sm))
1050 0 : sta->flags |= WLAN_STA_MFP;
1051 : else
1052 0 : sta->flags &= ~WLAN_STA_MFP;
1053 : #endif /* CONFIG_IEEE80211W */
1054 :
1055 : #ifdef CONFIG_IEEE80211R
1056 0 : if (sta->auth_alg == WLAN_AUTH_FT) {
1057 0 : if (!reassoc) {
1058 0 : wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried "
1059 : "to use association (not "
1060 : "re-association) with FT auth_alg",
1061 0 : MAC2STR(sta->addr));
1062 0 : return WLAN_STATUS_UNSPECIFIED_FAILURE;
1063 : }
1064 :
1065 0 : resp = wpa_ft_validate_reassoc(sta->wpa_sm, ies,
1066 : ies_len);
1067 0 : if (resp != WLAN_STATUS_SUCCESS)
1068 0 : return resp;
1069 : }
1070 : #endif /* CONFIG_IEEE80211R */
1071 :
1072 : #ifdef CONFIG_SAE
1073 0 : if (wpa_auth_uses_sae(sta->wpa_sm) &&
1074 0 : sta->auth_alg != WLAN_AUTH_SAE &&
1075 0 : !(sta->auth_alg == WLAN_AUTH_FT &&
1076 0 : wpa_auth_uses_ft_sae(sta->wpa_sm))) {
1077 0 : wpa_printf(MSG_DEBUG, "SAE: " MACSTR " tried to use "
1078 : "SAE AKM after non-SAE auth_alg %u",
1079 0 : MAC2STR(sta->addr), sta->auth_alg);
1080 0 : return WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
1081 : }
1082 : #endif /* CONFIG_SAE */
1083 :
1084 : #ifdef CONFIG_IEEE80211N
1085 0 : if ((sta->flags & (WLAN_STA_HT | WLAN_STA_VHT)) &&
1086 0 : wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) {
1087 0 : hostapd_logger(hapd, sta->addr,
1088 : HOSTAPD_MODULE_IEEE80211,
1089 : HOSTAPD_LEVEL_INFO,
1090 : "Station tried to use TKIP with HT "
1091 : "association");
1092 0 : return WLAN_STATUS_CIPHER_REJECTED_PER_POLICY;
1093 : }
1094 : #endif /* CONFIG_IEEE80211N */
1095 : #ifdef CONFIG_HS20
1096 0 : } else if (hapd->conf->osen) {
1097 0 : if (elems.osen == NULL) {
1098 0 : hostapd_logger(
1099 0 : hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1100 : HOSTAPD_LEVEL_INFO,
1101 : "No HS 2.0 OSEN element in association request");
1102 0 : return WLAN_STATUS_INVALID_IE;
1103 : }
1104 :
1105 0 : wpa_printf(MSG_DEBUG, "HS 2.0: OSEN association");
1106 0 : if (sta->wpa_sm == NULL)
1107 0 : sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
1108 0 : sta->addr, NULL);
1109 0 : if (sta->wpa_sm == NULL) {
1110 0 : wpa_printf(MSG_WARNING, "Failed to initialize WPA "
1111 : "state machine");
1112 0 : return WLAN_STATUS_UNSPECIFIED_FAILURE;
1113 : }
1114 0 : if (wpa_validate_osen(hapd->wpa_auth, sta->wpa_sm,
1115 0 : elems.osen - 2, elems.osen_len + 2) < 0)
1116 0 : return WLAN_STATUS_INVALID_IE;
1117 : #endif /* CONFIG_HS20 */
1118 : } else
1119 0 : wpa_auth_sta_no_wpa(sta->wpa_sm);
1120 :
1121 : #ifdef CONFIG_P2P
1122 : p2p_group_notif_assoc(hapd->p2p_group, sta->addr, ies, ies_len);
1123 : #endif /* CONFIG_P2P */
1124 :
1125 : #ifdef CONFIG_HS20
1126 0 : wpabuf_free(sta->hs20_ie);
1127 0 : if (elems.hs20 && elems.hs20_len > 4) {
1128 0 : sta->hs20_ie = wpabuf_alloc_copy(elems.hs20 + 4,
1129 0 : elems.hs20_len - 4);
1130 : } else
1131 0 : sta->hs20_ie = NULL;
1132 : #endif /* CONFIG_HS20 */
1133 :
1134 0 : return WLAN_STATUS_SUCCESS;
1135 : }
1136 :
1137 :
1138 0 : static void send_deauth(struct hostapd_data *hapd, const u8 *addr,
1139 : u16 reason_code)
1140 : {
1141 : int send_len;
1142 : struct ieee80211_mgmt reply;
1143 :
1144 0 : os_memset(&reply, 0, sizeof(reply));
1145 0 : reply.frame_control =
1146 : IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_DEAUTH);
1147 0 : os_memcpy(reply.da, addr, ETH_ALEN);
1148 0 : os_memcpy(reply.sa, hapd->own_addr, ETH_ALEN);
1149 0 : os_memcpy(reply.bssid, hapd->own_addr, ETH_ALEN);
1150 :
1151 0 : send_len = IEEE80211_HDRLEN + sizeof(reply.u.deauth);
1152 0 : reply.u.deauth.reason_code = host_to_le16(reason_code);
1153 :
1154 0 : if (hostapd_drv_send_mlme(hapd, &reply, send_len, 0) < 0)
1155 0 : wpa_printf(MSG_INFO, "Failed to send deauth: %s",
1156 0 : strerror(errno));
1157 0 : }
1158 :
1159 :
1160 0 : static void send_assoc_resp(struct hostapd_data *hapd, struct sta_info *sta,
1161 : u16 status_code, int reassoc, const u8 *ies,
1162 : size_t ies_len)
1163 : {
1164 : int send_len;
1165 : u8 buf[sizeof(struct ieee80211_mgmt) + 1024];
1166 : struct ieee80211_mgmt *reply;
1167 : u8 *p;
1168 :
1169 0 : os_memset(buf, 0, sizeof(buf));
1170 0 : reply = (struct ieee80211_mgmt *) buf;
1171 0 : reply->frame_control =
1172 0 : IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1173 : (reassoc ? WLAN_FC_STYPE_REASSOC_RESP :
1174 : WLAN_FC_STYPE_ASSOC_RESP));
1175 0 : os_memcpy(reply->da, sta->addr, ETH_ALEN);
1176 0 : os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
1177 0 : os_memcpy(reply->bssid, hapd->own_addr, ETH_ALEN);
1178 :
1179 0 : send_len = IEEE80211_HDRLEN;
1180 0 : send_len += sizeof(reply->u.assoc_resp);
1181 0 : reply->u.assoc_resp.capab_info =
1182 0 : host_to_le16(hostapd_own_capab_info(hapd, sta, 0));
1183 0 : reply->u.assoc_resp.status_code = host_to_le16(status_code);
1184 0 : reply->u.assoc_resp.aid = host_to_le16(sta->aid | BIT(14) | BIT(15));
1185 : /* Supported rates */
1186 0 : p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable);
1187 : /* Extended supported rates */
1188 0 : p = hostapd_eid_ext_supp_rates(hapd, p);
1189 :
1190 : #ifdef CONFIG_IEEE80211R
1191 0 : if (status_code == WLAN_STATUS_SUCCESS) {
1192 : /* IEEE 802.11r: Mobility Domain Information, Fast BSS
1193 : * Transition Information, RSN, [RIC Response] */
1194 0 : p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p,
1195 0 : buf + sizeof(buf) - p,
1196 0 : sta->auth_alg, ies, ies_len);
1197 : }
1198 : #endif /* CONFIG_IEEE80211R */
1199 :
1200 : #ifdef CONFIG_IEEE80211W
1201 0 : if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY)
1202 0 : p = hostapd_eid_assoc_comeback_time(hapd, sta, p);
1203 : #endif /* CONFIG_IEEE80211W */
1204 :
1205 : #ifdef CONFIG_IEEE80211N
1206 0 : p = hostapd_eid_ht_capabilities(hapd, p);
1207 0 : p = hostapd_eid_ht_operation(hapd, p);
1208 : #endif /* CONFIG_IEEE80211N */
1209 :
1210 : #ifdef CONFIG_IEEE80211AC
1211 0 : p = hostapd_eid_vht_capabilities(hapd, p);
1212 0 : p = hostapd_eid_vht_operation(hapd, p);
1213 : #endif /* CONFIG_IEEE80211AC */
1214 :
1215 0 : p = hostapd_eid_ext_capab(hapd, p);
1216 0 : p = hostapd_eid_bss_max_idle_period(hapd, p);
1217 0 : if (sta->qos_map_enabled)
1218 0 : p = hostapd_eid_qos_map_set(hapd, p);
1219 :
1220 0 : if (sta->flags & WLAN_STA_WMM)
1221 0 : p = hostapd_eid_wmm(hapd, p);
1222 :
1223 : #ifdef CONFIG_WPS
1224 0 : if ((sta->flags & WLAN_STA_WPS) ||
1225 0 : ((sta->flags & WLAN_STA_MAYBE_WPS) && hapd->conf->wpa)) {
1226 0 : struct wpabuf *wps = wps_build_assoc_resp_ie();
1227 0 : if (wps) {
1228 0 : os_memcpy(p, wpabuf_head(wps), wpabuf_len(wps));
1229 0 : p += wpabuf_len(wps);
1230 0 : wpabuf_free(wps);
1231 : }
1232 : }
1233 : #endif /* CONFIG_WPS */
1234 :
1235 : #ifdef CONFIG_P2P
1236 : if (sta->p2p_ie) {
1237 : struct wpabuf *p2p_resp_ie;
1238 : enum p2p_status_code status;
1239 : switch (status_code) {
1240 : case WLAN_STATUS_SUCCESS:
1241 : status = P2P_SC_SUCCESS;
1242 : break;
1243 : case WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA:
1244 : status = P2P_SC_FAIL_LIMIT_REACHED;
1245 : break;
1246 : default:
1247 : status = P2P_SC_FAIL_INVALID_PARAMS;
1248 : break;
1249 : }
1250 : p2p_resp_ie = p2p_group_assoc_resp_ie(hapd->p2p_group, status);
1251 : if (p2p_resp_ie) {
1252 : os_memcpy(p, wpabuf_head(p2p_resp_ie),
1253 : wpabuf_len(p2p_resp_ie));
1254 : p += wpabuf_len(p2p_resp_ie);
1255 : wpabuf_free(p2p_resp_ie);
1256 : }
1257 : }
1258 : #endif /* CONFIG_P2P */
1259 :
1260 : #ifdef CONFIG_P2P_MANAGER
1261 0 : if (hapd->conf->p2p & P2P_MANAGE)
1262 0 : p = hostapd_eid_p2p_manage(hapd, p);
1263 : #endif /* CONFIG_P2P_MANAGER */
1264 :
1265 0 : send_len += p - reply->u.assoc_resp.variable;
1266 :
1267 0 : if (hostapd_drv_send_mlme(hapd, reply, send_len, 0) < 0)
1268 0 : wpa_printf(MSG_INFO, "Failed to send assoc resp: %s",
1269 0 : strerror(errno));
1270 0 : }
1271 :
1272 :
1273 0 : static void handle_assoc(struct hostapd_data *hapd,
1274 : const struct ieee80211_mgmt *mgmt, size_t len,
1275 : int reassoc)
1276 : {
1277 : u16 capab_info, listen_interval;
1278 0 : u16 resp = WLAN_STATUS_SUCCESS;
1279 : const u8 *pos;
1280 : int left, i;
1281 : struct sta_info *sta;
1282 :
1283 0 : if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
1284 : sizeof(mgmt->u.assoc_req))) {
1285 0 : wpa_printf(MSG_INFO, "handle_assoc(reassoc=%d) - too short payload (len=%lu)",
1286 : reassoc, (unsigned long) len);
1287 0 : return;
1288 : }
1289 :
1290 : #ifdef CONFIG_TESTING_OPTIONS
1291 0 : if (reassoc) {
1292 0 : if (hapd->iconf->ignore_reassoc_probability > 0.0 &&
1293 0 : drand48() < hapd->iconf->ignore_reassoc_probability) {
1294 0 : wpa_printf(MSG_INFO,
1295 : "TESTING: ignoring reassoc request from "
1296 0 : MACSTR, MAC2STR(mgmt->sa));
1297 0 : return;
1298 : }
1299 : } else {
1300 0 : if (hapd->iconf->ignore_assoc_probability > 0.0 &&
1301 0 : drand48() < hapd->iconf->ignore_assoc_probability) {
1302 0 : wpa_printf(MSG_INFO,
1303 : "TESTING: ignoring assoc request from "
1304 0 : MACSTR, MAC2STR(mgmt->sa));
1305 0 : return;
1306 : }
1307 : }
1308 : #endif /* CONFIG_TESTING_OPTIONS */
1309 :
1310 0 : if (reassoc) {
1311 0 : capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info);
1312 0 : listen_interval = le_to_host16(
1313 : mgmt->u.reassoc_req.listen_interval);
1314 0 : wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR
1315 : " capab_info=0x%02x listen_interval=%d current_ap="
1316 : MACSTR,
1317 0 : MAC2STR(mgmt->sa), capab_info, listen_interval,
1318 0 : MAC2STR(mgmt->u.reassoc_req.current_ap));
1319 0 : left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req));
1320 0 : pos = mgmt->u.reassoc_req.variable;
1321 : } else {
1322 0 : capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
1323 0 : listen_interval = le_to_host16(
1324 : mgmt->u.assoc_req.listen_interval);
1325 0 : wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR
1326 : " capab_info=0x%02x listen_interval=%d",
1327 0 : MAC2STR(mgmt->sa), capab_info, listen_interval);
1328 0 : left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req));
1329 0 : pos = mgmt->u.assoc_req.variable;
1330 : }
1331 :
1332 0 : sta = ap_get_sta(hapd, mgmt->sa);
1333 : #ifdef CONFIG_IEEE80211R
1334 0 : if (sta && sta->auth_alg == WLAN_AUTH_FT &&
1335 0 : (sta->flags & WLAN_STA_AUTH) == 0) {
1336 0 : wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate "
1337 : "prior to authentication since it is using "
1338 0 : "over-the-DS FT", MAC2STR(mgmt->sa));
1339 : } else
1340 : #endif /* CONFIG_IEEE80211R */
1341 0 : if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
1342 0 : hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1343 : HOSTAPD_LEVEL_INFO, "Station tried to "
1344 : "associate before authentication "
1345 : "(aid=%d flags=0x%x)",
1346 0 : sta ? sta->aid : -1,
1347 : sta ? sta->flags : 0);
1348 0 : send_deauth(hapd, mgmt->sa,
1349 : WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA);
1350 0 : return;
1351 : }
1352 :
1353 0 : if (hapd->tkip_countermeasures) {
1354 0 : resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
1355 0 : goto fail;
1356 : }
1357 :
1358 0 : if (listen_interval > hapd->conf->max_listen_interval) {
1359 0 : hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1360 : HOSTAPD_LEVEL_DEBUG,
1361 : "Too large Listen Interval (%d)",
1362 : listen_interval);
1363 0 : resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE;
1364 0 : goto fail;
1365 : }
1366 :
1367 : /* followed by SSID and Supported rates; and HT capabilities if 802.11n
1368 : * is used */
1369 0 : resp = check_assoc_ies(hapd, sta, pos, left, reassoc);
1370 0 : if (resp != WLAN_STATUS_SUCCESS)
1371 0 : goto fail;
1372 :
1373 0 : if (hostapd_get_aid(hapd, sta) < 0) {
1374 0 : hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1375 : HOSTAPD_LEVEL_INFO, "No room for more AIDs");
1376 0 : resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
1377 0 : goto fail;
1378 : }
1379 :
1380 0 : sta->capability = capab_info;
1381 0 : sta->listen_interval = listen_interval;
1382 :
1383 0 : if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
1384 0 : sta->flags |= WLAN_STA_NONERP;
1385 0 : for (i = 0; i < sta->supported_rates_len; i++) {
1386 0 : if ((sta->supported_rates[i] & 0x7f) > 22) {
1387 0 : sta->flags &= ~WLAN_STA_NONERP;
1388 0 : break;
1389 : }
1390 : }
1391 0 : if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) {
1392 0 : sta->nonerp_set = 1;
1393 0 : hapd->iface->num_sta_non_erp++;
1394 0 : if (hapd->iface->num_sta_non_erp == 1)
1395 0 : ieee802_11_set_beacons(hapd->iface);
1396 : }
1397 :
1398 0 : if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) &&
1399 0 : !sta->no_short_slot_time_set) {
1400 0 : sta->no_short_slot_time_set = 1;
1401 0 : hapd->iface->num_sta_no_short_slot_time++;
1402 0 : if (hapd->iface->current_mode->mode ==
1403 0 : HOSTAPD_MODE_IEEE80211G &&
1404 0 : hapd->iface->num_sta_no_short_slot_time == 1)
1405 0 : ieee802_11_set_beacons(hapd->iface);
1406 : }
1407 :
1408 0 : if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1409 0 : sta->flags |= WLAN_STA_SHORT_PREAMBLE;
1410 : else
1411 0 : sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
1412 :
1413 0 : if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
1414 0 : !sta->no_short_preamble_set) {
1415 0 : sta->no_short_preamble_set = 1;
1416 0 : hapd->iface->num_sta_no_short_preamble++;
1417 0 : if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
1418 0 : && hapd->iface->num_sta_no_short_preamble == 1)
1419 0 : ieee802_11_set_beacons(hapd->iface);
1420 : }
1421 :
1422 : #ifdef CONFIG_IEEE80211N
1423 0 : update_ht_state(hapd, sta);
1424 : #endif /* CONFIG_IEEE80211N */
1425 :
1426 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1427 : HOSTAPD_LEVEL_DEBUG,
1428 0 : "association OK (aid %d)", sta->aid);
1429 : /* Station will be marked associated, after it acknowledges AssocResp
1430 : */
1431 0 : sta->flags |= WLAN_STA_ASSOC_REQ_OK;
1432 :
1433 : #ifdef CONFIG_IEEE80211W
1434 0 : if ((sta->flags & WLAN_STA_MFP) && sta->sa_query_timed_out) {
1435 0 : wpa_printf(MSG_DEBUG, "Allowing %sassociation after timed out "
1436 : "SA Query procedure", reassoc ? "re" : "");
1437 : /* TODO: Send a protected Disassociate frame to the STA using
1438 : * the old key and Reason Code "Previous Authentication no
1439 : * longer valid". Make sure this is only sent protected since
1440 : * unprotected frame would be received by the STA that is now
1441 : * trying to associate.
1442 : */
1443 : }
1444 : #endif /* CONFIG_IEEE80211W */
1445 :
1446 : /* Make sure that the previously registered inactivity timer will not
1447 : * remove the STA immediately. */
1448 0 : sta->timeout_next = STA_NULLFUNC;
1449 :
1450 : fail:
1451 0 : send_assoc_resp(hapd, sta, resp, reassoc, pos, left);
1452 : }
1453 :
1454 :
1455 0 : static void handle_disassoc(struct hostapd_data *hapd,
1456 : const struct ieee80211_mgmt *mgmt, size_t len)
1457 : {
1458 : struct sta_info *sta;
1459 :
1460 0 : if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) {
1461 0 : wpa_printf(MSG_INFO, "handle_disassoc - too short payload (len=%lu)",
1462 : (unsigned long) len);
1463 0 : return;
1464 : }
1465 :
1466 0 : wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d",
1467 0 : MAC2STR(mgmt->sa),
1468 0 : le_to_host16(mgmt->u.disassoc.reason_code));
1469 :
1470 0 : sta = ap_get_sta(hapd, mgmt->sa);
1471 0 : if (sta == NULL) {
1472 0 : wpa_printf(MSG_INFO, "Station " MACSTR " trying to disassociate, but it is not associated",
1473 0 : MAC2STR(mgmt->sa));
1474 0 : return;
1475 : }
1476 :
1477 0 : ap_sta_set_authorized(hapd, sta, 0);
1478 0 : sta->flags &= ~(WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK);
1479 0 : wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
1480 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1481 : HOSTAPD_LEVEL_INFO, "disassociated");
1482 0 : sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1483 0 : ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1484 : /* Stop Accounting and IEEE 802.1X sessions, but leave the STA
1485 : * authenticated. */
1486 0 : accounting_sta_stop(hapd, sta);
1487 0 : ieee802_1x_free_station(sta);
1488 0 : hostapd_drv_sta_remove(hapd, sta->addr);
1489 :
1490 0 : if (sta->timeout_next == STA_NULLFUNC ||
1491 0 : sta->timeout_next == STA_DISASSOC) {
1492 0 : sta->timeout_next = STA_DEAUTH;
1493 0 : eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1494 0 : eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
1495 : hapd, sta);
1496 : }
1497 :
1498 0 : mlme_disassociate_indication(
1499 0 : hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code));
1500 : }
1501 :
1502 :
1503 0 : static void handle_deauth(struct hostapd_data *hapd,
1504 : const struct ieee80211_mgmt *mgmt, size_t len)
1505 : {
1506 : struct sta_info *sta;
1507 :
1508 0 : if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) {
1509 0 : wpa_msg(hapd->msg_ctx, MSG_DEBUG, "handle_deauth - too short "
1510 : "payload (len=%lu)", (unsigned long) len);
1511 0 : return;
1512 : }
1513 :
1514 0 : wpa_msg(hapd->msg_ctx, MSG_DEBUG, "deauthentication: STA=" MACSTR
1515 : " reason_code=%d",
1516 0 : MAC2STR(mgmt->sa), le_to_host16(mgmt->u.deauth.reason_code));
1517 :
1518 0 : sta = ap_get_sta(hapd, mgmt->sa);
1519 0 : if (sta == NULL) {
1520 0 : wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR " trying "
1521 : "to deauthenticate, but it is not authenticated",
1522 0 : MAC2STR(mgmt->sa));
1523 0 : return;
1524 : }
1525 :
1526 0 : ap_sta_set_authorized(hapd, sta, 0);
1527 0 : sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC |
1528 : WLAN_STA_ASSOC_REQ_OK);
1529 0 : wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
1530 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1531 : HOSTAPD_LEVEL_DEBUG, "deauthenticated");
1532 0 : mlme_deauthenticate_indication(
1533 0 : hapd, sta, le_to_host16(mgmt->u.deauth.reason_code));
1534 0 : sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1535 0 : ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1536 0 : ap_free_sta(hapd, sta);
1537 : }
1538 :
1539 :
1540 0 : static void handle_beacon(struct hostapd_data *hapd,
1541 : const struct ieee80211_mgmt *mgmt, size_t len,
1542 : struct hostapd_frame_info *fi)
1543 : {
1544 : struct ieee802_11_elems elems;
1545 :
1546 0 : if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) {
1547 0 : wpa_printf(MSG_INFO, "handle_beacon - too short payload (len=%lu)",
1548 : (unsigned long) len);
1549 0 : return;
1550 : }
1551 :
1552 0 : (void) ieee802_11_parse_elems(mgmt->u.beacon.variable,
1553 : len - (IEEE80211_HDRLEN +
1554 : sizeof(mgmt->u.beacon)), &elems,
1555 : 0);
1556 :
1557 0 : ap_list_process_beacon(hapd->iface, mgmt, &elems, fi);
1558 : }
1559 :
1560 :
1561 : #ifdef CONFIG_IEEE80211W
1562 :
1563 0 : static int hostapd_sa_query_action(struct hostapd_data *hapd,
1564 : const struct ieee80211_mgmt *mgmt,
1565 : size_t len)
1566 : {
1567 : const u8 *end;
1568 :
1569 0 : end = mgmt->u.action.u.sa_query_resp.trans_id +
1570 : WLAN_SA_QUERY_TR_ID_LEN;
1571 0 : if (((u8 *) mgmt) + len < end) {
1572 0 : wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short SA Query Action "
1573 : "frame (len=%lu)", (unsigned long) len);
1574 0 : return 0;
1575 : }
1576 :
1577 0 : ieee802_11_sa_query_action(hapd, mgmt->sa,
1578 0 : mgmt->u.action.u.sa_query_resp.action,
1579 0 : mgmt->u.action.u.sa_query_resp.trans_id);
1580 0 : return 1;
1581 : }
1582 :
1583 :
1584 0 : static int robust_action_frame(u8 category)
1585 : {
1586 0 : return category != WLAN_ACTION_PUBLIC &&
1587 : category != WLAN_ACTION_HT;
1588 : }
1589 : #endif /* CONFIG_IEEE80211W */
1590 :
1591 :
1592 0 : static int handle_action(struct hostapd_data *hapd,
1593 : const struct ieee80211_mgmt *mgmt, size_t len)
1594 : {
1595 : struct sta_info *sta;
1596 0 : sta = ap_get_sta(hapd, mgmt->sa);
1597 :
1598 0 : if (len < IEEE80211_HDRLEN + 1) {
1599 0 : hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1600 : HOSTAPD_LEVEL_DEBUG,
1601 : "handle_action - too short payload (len=%lu)",
1602 : (unsigned long) len);
1603 0 : return 0;
1604 : }
1605 :
1606 0 : if (mgmt->u.action.category != WLAN_ACTION_PUBLIC &&
1607 0 : (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))) {
1608 0 : wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored Action "
1609 : "frame (category=%u) from unassociated STA " MACSTR,
1610 0 : MAC2STR(mgmt->sa), mgmt->u.action.category);
1611 0 : return 0;
1612 : }
1613 :
1614 : #ifdef CONFIG_IEEE80211W
1615 0 : if (sta && (sta->flags & WLAN_STA_MFP) &&
1616 0 : !(mgmt->frame_control & host_to_le16(WLAN_FC_ISWEP)) &&
1617 0 : robust_action_frame(mgmt->u.action.category)) {
1618 0 : hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1619 : HOSTAPD_LEVEL_DEBUG,
1620 : "Dropped unprotected Robust Action frame from "
1621 : "an MFP STA");
1622 0 : return 0;
1623 : }
1624 : #endif /* CONFIG_IEEE80211W */
1625 :
1626 0 : switch (mgmt->u.action.category) {
1627 : #ifdef CONFIG_IEEE80211R
1628 : case WLAN_ACTION_FT:
1629 0 : if (!sta ||
1630 0 : wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action,
1631 : len - IEEE80211_HDRLEN))
1632 : break;
1633 0 : return 1;
1634 : #endif /* CONFIG_IEEE80211R */
1635 : case WLAN_ACTION_WMM:
1636 0 : hostapd_wmm_action(hapd, mgmt, len);
1637 0 : return 1;
1638 : #ifdef CONFIG_IEEE80211W
1639 : case WLAN_ACTION_SA_QUERY:
1640 0 : return hostapd_sa_query_action(hapd, mgmt, len);
1641 : #endif /* CONFIG_IEEE80211W */
1642 : #ifdef CONFIG_WNM
1643 : case WLAN_ACTION_WNM:
1644 0 : ieee802_11_rx_wnm_action_ap(hapd, mgmt, len);
1645 0 : return 1;
1646 : #endif /* CONFIG_WNM */
1647 : case WLAN_ACTION_PUBLIC:
1648 : case WLAN_ACTION_PROTECTED_DUAL:
1649 : #ifdef CONFIG_IEEE80211N
1650 0 : if (mgmt->u.action.u.public_action.action ==
1651 : WLAN_PA_20_40_BSS_COEX) {
1652 0 : wpa_printf(MSG_DEBUG,
1653 : "HT20/40 coex mgmt frame received from STA "
1654 0 : MACSTR, MAC2STR(mgmt->sa));
1655 0 : hostapd_2040_coex_action(hapd, mgmt, len);
1656 : }
1657 : #endif /* CONFIG_IEEE80211N */
1658 0 : if (hapd->public_action_cb) {
1659 0 : hapd->public_action_cb(hapd->public_action_cb_ctx,
1660 : (u8 *) mgmt, len,
1661 0 : hapd->iface->freq);
1662 : }
1663 0 : if (hapd->public_action_cb2) {
1664 0 : hapd->public_action_cb2(hapd->public_action_cb2_ctx,
1665 : (u8 *) mgmt, len,
1666 0 : hapd->iface->freq);
1667 : }
1668 0 : if (hapd->public_action_cb || hapd->public_action_cb2)
1669 0 : return 1;
1670 0 : break;
1671 : case WLAN_ACTION_VENDOR_SPECIFIC:
1672 0 : if (hapd->vendor_action_cb) {
1673 0 : if (hapd->vendor_action_cb(hapd->vendor_action_cb_ctx,
1674 : (u8 *) mgmt, len,
1675 0 : hapd->iface->freq) == 0)
1676 0 : return 1;
1677 : }
1678 0 : break;
1679 : }
1680 :
1681 0 : hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1682 : HOSTAPD_LEVEL_DEBUG,
1683 : "handle_action - unknown action category %d or invalid "
1684 : "frame",
1685 0 : mgmt->u.action.category);
1686 0 : if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) &&
1687 0 : !(mgmt->sa[0] & 0x01)) {
1688 : struct ieee80211_mgmt *resp;
1689 :
1690 : /*
1691 : * IEEE 802.11-REVma/D9.0 - 7.3.1.11
1692 : * Return the Action frame to the source without change
1693 : * except that MSB of the Category set to 1.
1694 : */
1695 0 : wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action "
1696 : "frame back to sender");
1697 0 : resp = os_malloc(len);
1698 0 : if (resp == NULL)
1699 0 : return 0;
1700 0 : os_memcpy(resp, mgmt, len);
1701 0 : os_memcpy(resp->da, resp->sa, ETH_ALEN);
1702 0 : os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
1703 0 : os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
1704 0 : resp->u.action.category |= 0x80;
1705 :
1706 0 : if (hostapd_drv_send_mlme(hapd, resp, len, 0) < 0) {
1707 0 : wpa_printf(MSG_ERROR, "IEEE 802.11: Failed to send "
1708 : "Action frame");
1709 : }
1710 0 : os_free(resp);
1711 : }
1712 :
1713 0 : return 1;
1714 : }
1715 :
1716 :
1717 : /**
1718 : * ieee802_11_mgmt - process incoming IEEE 802.11 management frames
1719 : * @hapd: hostapd BSS data structure (the BSS to which the management frame was
1720 : * sent to)
1721 : * @buf: management frame data (starting from IEEE 802.11 header)
1722 : * @len: length of frame data in octets
1723 : * @fi: meta data about received frame (signal level, etc.)
1724 : *
1725 : * Process all incoming IEEE 802.11 management frames. This will be called for
1726 : * each frame received from the kernel driver through wlan#ap interface. In
1727 : * addition, it can be called to re-inserted pending frames (e.g., when using
1728 : * external RADIUS server as an MAC ACL).
1729 : */
1730 0 : int ieee802_11_mgmt(struct hostapd_data *hapd, const u8 *buf, size_t len,
1731 : struct hostapd_frame_info *fi)
1732 : {
1733 : struct ieee80211_mgmt *mgmt;
1734 : int broadcast;
1735 : u16 fc, stype;
1736 0 : int ret = 0;
1737 :
1738 0 : if (len < 24)
1739 0 : return 0;
1740 :
1741 0 : mgmt = (struct ieee80211_mgmt *) buf;
1742 0 : fc = le_to_host16(mgmt->frame_control);
1743 0 : stype = WLAN_FC_GET_STYPE(fc);
1744 :
1745 0 : if (stype == WLAN_FC_STYPE_BEACON) {
1746 0 : handle_beacon(hapd, mgmt, len, fi);
1747 0 : return 1;
1748 : }
1749 :
1750 0 : broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff &&
1751 0 : mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff &&
1752 0 : mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff;
1753 :
1754 0 : if (!broadcast &&
1755 : #ifdef CONFIG_P2P
1756 : /* Invitation responses can be sent with the peer MAC as BSSID */
1757 : !((hapd->conf->p2p & P2P_GROUP_OWNER) &&
1758 : stype == WLAN_FC_STYPE_ACTION) &&
1759 : #endif /* CONFIG_P2P */
1760 0 : os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) {
1761 0 : wpa_printf(MSG_INFO, "MGMT: BSSID=" MACSTR " not our address",
1762 0 : MAC2STR(mgmt->bssid));
1763 0 : return 0;
1764 : }
1765 :
1766 :
1767 0 : if (stype == WLAN_FC_STYPE_PROBE_REQ) {
1768 0 : handle_probe_req(hapd, mgmt, len, fi->ssi_signal);
1769 0 : return 1;
1770 : }
1771 :
1772 0 : if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) {
1773 0 : hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1774 : HOSTAPD_LEVEL_DEBUG,
1775 : "MGMT: DA=" MACSTR " not our address",
1776 0 : MAC2STR(mgmt->da));
1777 0 : return 0;
1778 : }
1779 :
1780 0 : switch (stype) {
1781 : case WLAN_FC_STYPE_AUTH:
1782 0 : wpa_printf(MSG_DEBUG, "mgmt::auth");
1783 0 : handle_auth(hapd, mgmt, len);
1784 0 : ret = 1;
1785 0 : break;
1786 : case WLAN_FC_STYPE_ASSOC_REQ:
1787 0 : wpa_printf(MSG_DEBUG, "mgmt::assoc_req");
1788 0 : handle_assoc(hapd, mgmt, len, 0);
1789 0 : ret = 1;
1790 0 : break;
1791 : case WLAN_FC_STYPE_REASSOC_REQ:
1792 0 : wpa_printf(MSG_DEBUG, "mgmt::reassoc_req");
1793 0 : handle_assoc(hapd, mgmt, len, 1);
1794 0 : ret = 1;
1795 0 : break;
1796 : case WLAN_FC_STYPE_DISASSOC:
1797 0 : wpa_printf(MSG_DEBUG, "mgmt::disassoc");
1798 0 : handle_disassoc(hapd, mgmt, len);
1799 0 : ret = 1;
1800 0 : break;
1801 : case WLAN_FC_STYPE_DEAUTH:
1802 0 : wpa_msg(hapd->msg_ctx, MSG_DEBUG, "mgmt::deauth");
1803 0 : handle_deauth(hapd, mgmt, len);
1804 0 : ret = 1;
1805 0 : break;
1806 : case WLAN_FC_STYPE_ACTION:
1807 0 : wpa_printf(MSG_DEBUG, "mgmt::action");
1808 0 : ret = handle_action(hapd, mgmt, len);
1809 0 : break;
1810 : default:
1811 0 : hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1812 : HOSTAPD_LEVEL_DEBUG,
1813 : "unknown mgmt frame subtype %d", stype);
1814 0 : break;
1815 : }
1816 :
1817 0 : return ret;
1818 : }
1819 :
1820 :
1821 0 : static void handle_auth_cb(struct hostapd_data *hapd,
1822 : const struct ieee80211_mgmt *mgmt,
1823 : size_t len, int ok)
1824 : {
1825 : u16 auth_alg, auth_transaction, status_code;
1826 : struct sta_info *sta;
1827 :
1828 0 : if (!ok) {
1829 0 : hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1830 : HOSTAPD_LEVEL_NOTICE,
1831 : "did not acknowledge authentication response");
1832 0 : return;
1833 : }
1834 :
1835 0 : if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
1836 0 : wpa_printf(MSG_INFO, "handle_auth_cb - too short payload (len=%lu)",
1837 : (unsigned long) len);
1838 0 : return;
1839 : }
1840 :
1841 0 : auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
1842 0 : auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
1843 0 : status_code = le_to_host16(mgmt->u.auth.status_code);
1844 :
1845 0 : sta = ap_get_sta(hapd, mgmt->da);
1846 0 : if (!sta) {
1847 0 : wpa_printf(MSG_INFO, "handle_auth_cb: STA " MACSTR " not found",
1848 0 : MAC2STR(mgmt->da));
1849 0 : return;
1850 : }
1851 :
1852 0 : if (status_code == WLAN_STATUS_SUCCESS &&
1853 0 : ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
1854 0 : (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
1855 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1856 : HOSTAPD_LEVEL_INFO, "authenticated");
1857 0 : sta->flags |= WLAN_STA_AUTH;
1858 : }
1859 : }
1860 :
1861 :
1862 0 : static void hostapd_set_wds_encryption(struct hostapd_data *hapd,
1863 : struct sta_info *sta,
1864 : char *ifname_wds)
1865 : {
1866 : int i;
1867 0 : struct hostapd_ssid *ssid = sta->ssid;
1868 :
1869 0 : if (hapd->conf->ieee802_1x || hapd->conf->wpa)
1870 0 : return;
1871 :
1872 0 : for (i = 0; i < 4; i++) {
1873 0 : if (ssid->wep.key[i] &&
1874 0 : hostapd_drv_set_key(ifname_wds, hapd, WPA_ALG_WEP, NULL, i,
1875 0 : i == ssid->wep.idx, NULL, 0,
1876 0 : ssid->wep.key[i], ssid->wep.len[i])) {
1877 0 : wpa_printf(MSG_WARNING,
1878 : "Could not set WEP keys for WDS interface; %s",
1879 : ifname_wds);
1880 0 : break;
1881 : }
1882 : }
1883 : }
1884 :
1885 :
1886 0 : static void handle_assoc_cb(struct hostapd_data *hapd,
1887 : const struct ieee80211_mgmt *mgmt,
1888 : size_t len, int reassoc, int ok)
1889 : {
1890 : u16 status;
1891 : struct sta_info *sta;
1892 0 : int new_assoc = 1;
1893 : struct ieee80211_ht_capabilities ht_cap;
1894 : struct ieee80211_vht_capabilities vht_cap;
1895 :
1896 0 : if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) :
1897 : sizeof(mgmt->u.assoc_resp))) {
1898 0 : wpa_printf(MSG_INFO, "handle_assoc_cb(reassoc=%d) - too short payload (len=%lu)",
1899 : reassoc, (unsigned long) len);
1900 0 : return;
1901 : }
1902 :
1903 0 : sta = ap_get_sta(hapd, mgmt->da);
1904 0 : if (!sta) {
1905 0 : wpa_printf(MSG_INFO, "handle_assoc_cb: STA " MACSTR " not found",
1906 0 : MAC2STR(mgmt->da));
1907 0 : return;
1908 : }
1909 :
1910 0 : if (!ok) {
1911 0 : hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1912 : HOSTAPD_LEVEL_DEBUG,
1913 : "did not acknowledge association response");
1914 0 : sta->flags &= ~WLAN_STA_ASSOC_REQ_OK;
1915 0 : return;
1916 : }
1917 :
1918 0 : if (reassoc)
1919 0 : status = le_to_host16(mgmt->u.reassoc_resp.status_code);
1920 : else
1921 0 : status = le_to_host16(mgmt->u.assoc_resp.status_code);
1922 :
1923 0 : if (status != WLAN_STATUS_SUCCESS)
1924 0 : return;
1925 :
1926 : /* Stop previous accounting session, if one is started, and allocate
1927 : * new session id for the new session. */
1928 0 : accounting_sta_stop(hapd, sta);
1929 :
1930 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1931 : HOSTAPD_LEVEL_INFO,
1932 : "associated (aid %d)",
1933 0 : sta->aid);
1934 :
1935 0 : if (sta->flags & WLAN_STA_ASSOC)
1936 0 : new_assoc = 0;
1937 0 : sta->flags |= WLAN_STA_ASSOC;
1938 0 : sta->flags &= ~WLAN_STA_WNM_SLEEP_MODE;
1939 0 : if ((!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen) ||
1940 0 : sta->auth_alg == WLAN_AUTH_FT) {
1941 : /*
1942 : * Open, static WEP, or FT protocol; no separate authorization
1943 : * step.
1944 : */
1945 0 : ap_sta_set_authorized(hapd, sta, 1);
1946 : }
1947 :
1948 0 : if (reassoc)
1949 0 : mlme_reassociate_indication(hapd, sta);
1950 : else
1951 0 : mlme_associate_indication(hapd, sta);
1952 :
1953 : #ifdef CONFIG_IEEE80211W
1954 0 : sta->sa_query_timed_out = 0;
1955 : #endif /* CONFIG_IEEE80211W */
1956 :
1957 : /*
1958 : * Remove the STA entry in order to make sure the STA PS state gets
1959 : * cleared and configuration gets updated in case of reassociation back
1960 : * to the same AP.
1961 : */
1962 0 : hostapd_drv_sta_remove(hapd, sta->addr);
1963 :
1964 : #ifdef CONFIG_IEEE80211N
1965 0 : if (sta->flags & WLAN_STA_HT)
1966 0 : hostapd_get_ht_capab(hapd, sta->ht_capabilities, &ht_cap);
1967 : #endif /* CONFIG_IEEE80211N */
1968 : #ifdef CONFIG_IEEE80211AC
1969 0 : if (sta->flags & WLAN_STA_VHT)
1970 0 : hostapd_get_vht_capab(hapd, sta->vht_capabilities, &vht_cap);
1971 : #endif /* CONFIG_IEEE80211AC */
1972 :
1973 0 : if (hostapd_sta_add(hapd, sta->addr, sta->aid, sta->capability,
1974 0 : sta->supported_rates, sta->supported_rates_len,
1975 0 : sta->listen_interval,
1976 0 : sta->flags & WLAN_STA_HT ? &ht_cap : NULL,
1977 0 : sta->flags & WLAN_STA_VHT ? &vht_cap : NULL,
1978 0 : sta->flags, sta->qosinfo, sta->vht_opmode)) {
1979 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1980 : HOSTAPD_LEVEL_NOTICE,
1981 : "Could not add STA to kernel driver");
1982 :
1983 0 : ap_sta_disconnect(hapd, sta, sta->addr,
1984 : WLAN_REASON_DISASSOC_AP_BUSY);
1985 :
1986 0 : return;
1987 : }
1988 :
1989 0 : if (sta->flags & WLAN_STA_WDS) {
1990 : int ret;
1991 : char ifname_wds[IFNAMSIZ + 1];
1992 :
1993 0 : ret = hostapd_set_wds_sta(hapd, ifname_wds, sta->addr,
1994 0 : sta->aid, 1);
1995 0 : if (!ret)
1996 0 : hostapd_set_wds_encryption(hapd, sta, ifname_wds);
1997 : }
1998 :
1999 0 : if (sta->eapol_sm == NULL) {
2000 : /*
2001 : * This STA does not use RADIUS server for EAP authentication,
2002 : * so bind it to the selected VLAN interface now, since the
2003 : * interface selection is not going to change anymore.
2004 : */
2005 0 : if (ap_sta_bind_vlan(hapd, sta, 0) < 0)
2006 0 : return;
2007 0 : } else if (sta->vlan_id) {
2008 : /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */
2009 0 : if (ap_sta_bind_vlan(hapd, sta, 0) < 0)
2010 0 : return;
2011 : }
2012 :
2013 0 : hostapd_set_sta_flags(hapd, sta);
2014 :
2015 0 : if (sta->auth_alg == WLAN_AUTH_FT)
2016 0 : wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
2017 : else
2018 0 : wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
2019 0 : hapd->new_assoc_sta_cb(hapd, sta, !new_assoc);
2020 :
2021 0 : ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
2022 : }
2023 :
2024 :
2025 0 : static void handle_deauth_cb(struct hostapd_data *hapd,
2026 : const struct ieee80211_mgmt *mgmt,
2027 : size_t len, int ok)
2028 : {
2029 : struct sta_info *sta;
2030 0 : if (mgmt->da[0] & 0x01)
2031 0 : return;
2032 0 : sta = ap_get_sta(hapd, mgmt->da);
2033 0 : if (!sta) {
2034 0 : wpa_printf(MSG_DEBUG, "handle_deauth_cb: STA " MACSTR
2035 0 : " not found", MAC2STR(mgmt->da));
2036 0 : return;
2037 : }
2038 0 : if (ok)
2039 0 : wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged deauth",
2040 0 : MAC2STR(sta->addr));
2041 : else
2042 0 : wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge "
2043 0 : "deauth", MAC2STR(sta->addr));
2044 :
2045 0 : ap_sta_deauth_cb(hapd, sta);
2046 : }
2047 :
2048 :
2049 0 : static void handle_disassoc_cb(struct hostapd_data *hapd,
2050 : const struct ieee80211_mgmt *mgmt,
2051 : size_t len, int ok)
2052 : {
2053 : struct sta_info *sta;
2054 0 : if (mgmt->da[0] & 0x01)
2055 0 : return;
2056 0 : sta = ap_get_sta(hapd, mgmt->da);
2057 0 : if (!sta) {
2058 0 : wpa_printf(MSG_DEBUG, "handle_disassoc_cb: STA " MACSTR
2059 0 : " not found", MAC2STR(mgmt->da));
2060 0 : return;
2061 : }
2062 0 : if (ok)
2063 0 : wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged disassoc",
2064 0 : MAC2STR(sta->addr));
2065 : else
2066 0 : wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge "
2067 0 : "disassoc", MAC2STR(sta->addr));
2068 :
2069 0 : ap_sta_disassoc_cb(hapd, sta);
2070 : }
2071 :
2072 :
2073 : /**
2074 : * ieee802_11_mgmt_cb - Process management frame TX status callback
2075 : * @hapd: hostapd BSS data structure (the BSS from which the management frame
2076 : * was sent from)
2077 : * @buf: management frame data (starting from IEEE 802.11 header)
2078 : * @len: length of frame data in octets
2079 : * @stype: management frame subtype from frame control field
2080 : * @ok: Whether the frame was ACK'ed
2081 : */
2082 0 : void ieee802_11_mgmt_cb(struct hostapd_data *hapd, const u8 *buf, size_t len,
2083 : u16 stype, int ok)
2084 : {
2085 : const struct ieee80211_mgmt *mgmt;
2086 0 : mgmt = (const struct ieee80211_mgmt *) buf;
2087 :
2088 : #ifdef CONFIG_TESTING_OPTIONS
2089 0 : if (hapd->ext_mgmt_frame_handling) {
2090 0 : wpa_msg(hapd->msg_ctx, MSG_INFO, "MGMT-TX-STATUS stype=%u ok=%d",
2091 : stype, ok);
2092 0 : return;
2093 : }
2094 : #endif /* CONFIG_TESTING_OPTIONS */
2095 :
2096 0 : switch (stype) {
2097 : case WLAN_FC_STYPE_AUTH:
2098 0 : wpa_printf(MSG_DEBUG, "mgmt::auth cb");
2099 0 : handle_auth_cb(hapd, mgmt, len, ok);
2100 0 : break;
2101 : case WLAN_FC_STYPE_ASSOC_RESP:
2102 0 : wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb");
2103 0 : handle_assoc_cb(hapd, mgmt, len, 0, ok);
2104 0 : break;
2105 : case WLAN_FC_STYPE_REASSOC_RESP:
2106 0 : wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb");
2107 0 : handle_assoc_cb(hapd, mgmt, len, 1, ok);
2108 0 : break;
2109 : case WLAN_FC_STYPE_PROBE_RESP:
2110 0 : wpa_printf(MSG_EXCESSIVE, "mgmt::proberesp cb");
2111 0 : break;
2112 : case WLAN_FC_STYPE_DEAUTH:
2113 0 : wpa_printf(MSG_DEBUG, "mgmt::deauth cb");
2114 0 : handle_deauth_cb(hapd, mgmt, len, ok);
2115 0 : break;
2116 : case WLAN_FC_STYPE_DISASSOC:
2117 0 : wpa_printf(MSG_DEBUG, "mgmt::disassoc cb");
2118 0 : handle_disassoc_cb(hapd, mgmt, len, ok);
2119 0 : break;
2120 : case WLAN_FC_STYPE_ACTION:
2121 0 : wpa_printf(MSG_DEBUG, "mgmt::action cb");
2122 0 : break;
2123 : default:
2124 0 : wpa_printf(MSG_INFO, "unknown mgmt cb frame subtype %d", stype);
2125 0 : break;
2126 : }
2127 : }
2128 :
2129 :
2130 0 : int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
2131 : {
2132 : /* TODO */
2133 0 : return 0;
2134 : }
2135 :
2136 :
2137 0 : int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
2138 : char *buf, size_t buflen)
2139 : {
2140 : /* TODO */
2141 0 : return 0;
2142 : }
2143 :
2144 :
2145 0 : void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr,
2146 : const u8 *buf, size_t len, int ack)
2147 : {
2148 : struct sta_info *sta;
2149 0 : struct hostapd_iface *iface = hapd->iface;
2150 :
2151 0 : sta = ap_get_sta(hapd, addr);
2152 0 : if (sta == NULL && iface->num_bss > 1) {
2153 : size_t j;
2154 0 : for (j = 0; j < iface->num_bss; j++) {
2155 0 : hapd = iface->bss[j];
2156 0 : sta = ap_get_sta(hapd, addr);
2157 0 : if (sta)
2158 0 : break;
2159 : }
2160 : }
2161 0 : if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))
2162 0 : return;
2163 0 : if (sta->flags & WLAN_STA_PENDING_POLL) {
2164 0 : wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
2165 0 : "activity poll", MAC2STR(sta->addr),
2166 : ack ? "ACKed" : "did not ACK");
2167 0 : if (ack)
2168 0 : sta->flags &= ~WLAN_STA_PENDING_POLL;
2169 : }
2170 :
2171 0 : ieee802_1x_tx_status(hapd, sta, buf, len, ack);
2172 : }
2173 :
2174 :
2175 0 : void hostapd_eapol_tx_status(struct hostapd_data *hapd, const u8 *dst,
2176 : const u8 *data, size_t len, int ack)
2177 : {
2178 : struct sta_info *sta;
2179 0 : struct hostapd_iface *iface = hapd->iface;
2180 :
2181 0 : sta = ap_get_sta(hapd, dst);
2182 0 : if (sta == NULL && iface->num_bss > 1) {
2183 : size_t j;
2184 0 : for (j = 0; j < iface->num_bss; j++) {
2185 0 : hapd = iface->bss[j];
2186 0 : sta = ap_get_sta(hapd, dst);
2187 0 : if (sta)
2188 0 : break;
2189 : }
2190 : }
2191 0 : if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
2192 0 : wpa_printf(MSG_DEBUG, "Ignore TX status for Data frame to STA "
2193 : MACSTR " that is not currently associated",
2194 0 : MAC2STR(dst));
2195 0 : return;
2196 : }
2197 :
2198 0 : ieee802_1x_eapol_tx_status(hapd, sta, data, len, ack);
2199 : }
2200 :
2201 :
2202 0 : void hostapd_client_poll_ok(struct hostapd_data *hapd, const u8 *addr)
2203 : {
2204 : struct sta_info *sta;
2205 0 : struct hostapd_iface *iface = hapd->iface;
2206 :
2207 0 : sta = ap_get_sta(hapd, addr);
2208 0 : if (sta == NULL && iface->num_bss > 1) {
2209 : size_t j;
2210 0 : for (j = 0; j < iface->num_bss; j++) {
2211 0 : hapd = iface->bss[j];
2212 0 : sta = ap_get_sta(hapd, addr);
2213 0 : if (sta)
2214 0 : break;
2215 : }
2216 : }
2217 0 : if (sta == NULL)
2218 0 : return;
2219 0 : if (!(sta->flags & WLAN_STA_PENDING_POLL))
2220 0 : return;
2221 :
2222 0 : wpa_printf(MSG_DEBUG, "STA " MACSTR " ACKed pending "
2223 0 : "activity poll", MAC2STR(sta->addr));
2224 0 : sta->flags &= ~WLAN_STA_PENDING_POLL;
2225 : }
2226 :
2227 :
2228 0 : void ieee802_11_rx_from_unknown(struct hostapd_data *hapd, const u8 *src,
2229 : int wds)
2230 : {
2231 : struct sta_info *sta;
2232 :
2233 0 : sta = ap_get_sta(hapd, src);
2234 0 : if (sta && (sta->flags & WLAN_STA_ASSOC)) {
2235 0 : if (!hapd->conf->wds_sta)
2236 0 : return;
2237 :
2238 0 : if (wds && !(sta->flags & WLAN_STA_WDS)) {
2239 : int ret;
2240 : char ifname_wds[IFNAMSIZ + 1];
2241 :
2242 0 : wpa_printf(MSG_DEBUG, "Enable 4-address WDS mode for "
2243 : "STA " MACSTR " (aid %u)",
2244 0 : MAC2STR(sta->addr), sta->aid);
2245 0 : sta->flags |= WLAN_STA_WDS;
2246 0 : ret = hostapd_set_wds_sta(hapd, ifname_wds,
2247 0 : sta->addr, sta->aid, 1);
2248 0 : if (!ret)
2249 0 : hostapd_set_wds_encryption(hapd, sta,
2250 : ifname_wds);
2251 : }
2252 0 : return;
2253 : }
2254 :
2255 0 : wpa_printf(MSG_DEBUG, "Data/PS-poll frame from not associated STA "
2256 0 : MACSTR, MAC2STR(src));
2257 0 : if (src[0] & 0x01) {
2258 : /* Broadcast bit set in SA?! Ignore the frame silently. */
2259 0 : return;
2260 : }
2261 :
2262 0 : if (sta && (sta->flags & WLAN_STA_ASSOC_REQ_OK)) {
2263 0 : wpa_printf(MSG_DEBUG, "Association Response to the STA has "
2264 : "already been sent, but no TX status yet known - "
2265 : "ignore Class 3 frame issue with " MACSTR,
2266 0 : MAC2STR(src));
2267 0 : return;
2268 : }
2269 :
2270 0 : if (sta && (sta->flags & WLAN_STA_AUTH))
2271 0 : hostapd_drv_sta_disassoc(
2272 : hapd, src,
2273 : WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
2274 : else
2275 0 : hostapd_drv_sta_deauth(
2276 : hapd, src,
2277 : WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
2278 : }
2279 :
2280 :
2281 : #endif /* CONFIG_NATIVE_WINDOWS */
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