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[thirdparty/hostap.git] / src / ap / ieee802_11.c
1 /*
2 * hostapd / IEEE 802.11 Management
3 * Copyright (c) 2002-2017, 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/sha384.h"
18 #include "crypto/sha512.h"
19 #include "crypto/random.h"
20 #include "common/ieee802_11_defs.h"
21 #include "common/ieee802_11_common.h"
22 #include "common/wpa_ctrl.h"
23 #include "common/sae.h"
24 #include "common/dpp.h"
25 #include "common/ocv.h"
26 #include "radius/radius.h"
27 #include "radius/radius_client.h"
28 #include "p2p/p2p.h"
29 #include "wps/wps.h"
30 #include "fst/fst.h"
31 #include "hostapd.h"
32 #include "beacon.h"
33 #include "ieee802_11_auth.h"
34 #include "sta_info.h"
35 #include "ieee802_1x.h"
36 #include "wpa_auth.h"
37 #include "pmksa_cache_auth.h"
38 #include "wmm.h"
39 #include "ap_list.h"
40 #include "accounting.h"
41 #include "ap_config.h"
42 #include "ap_mlme.h"
43 #include "p2p_hostapd.h"
44 #include "ap_drv_ops.h"
45 #include "wnm_ap.h"
46 #include "hw_features.h"
47 #include "ieee802_11.h"
48 #include "dfs.h"
49 #include "mbo_ap.h"
50 #include "rrm.h"
51 #include "taxonomy.h"
52 #include "fils_hlp.h"
53 #include "dpp_hostapd.h"
54 #include "gas_query_ap.h"
55
56
57 #ifdef CONFIG_FILS
58 static struct wpabuf *
59 prepare_auth_resp_fils(struct hostapd_data *hapd,
60 struct sta_info *sta, u16 *resp,
61 struct rsn_pmksa_cache_entry *pmksa,
62 struct wpabuf *erp_resp,
63 const u8 *msk, size_t msk_len,
64 int *is_pub);
65 #endif /* CONFIG_FILS */
66 static void handle_auth(struct hostapd_data *hapd,
67 const struct ieee80211_mgmt *mgmt, size_t len,
68 int rssi, int from_queue);
69
70
71 u8 * hostapd_eid_multi_ap(struct hostapd_data *hapd, u8 *eid)
72 {
73 u8 multi_ap_val = 0;
74
75 if (!hapd->conf->multi_ap)
76 return eid;
77 if (hapd->conf->multi_ap & BACKHAUL_BSS)
78 multi_ap_val |= MULTI_AP_BACKHAUL_BSS;
79 if (hapd->conf->multi_ap & FRONTHAUL_BSS)
80 multi_ap_val |= MULTI_AP_FRONTHAUL_BSS;
81
82 return eid + add_multi_ap_ie(eid, 9, multi_ap_val);
83 }
84
85
86 u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid)
87 {
88 u8 *pos = eid;
89 int i, num, count;
90
91 if (hapd->iface->current_rates == NULL)
92 return eid;
93
94 *pos++ = WLAN_EID_SUPP_RATES;
95 num = hapd->iface->num_rates;
96 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht)
97 num++;
98 if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht)
99 num++;
100 if (num > 8) {
101 /* rest of the rates are encoded in Extended supported
102 * rates element */
103 num = 8;
104 }
105
106 *pos++ = num;
107 for (i = 0, count = 0; i < hapd->iface->num_rates && count < num;
108 i++) {
109 count++;
110 *pos = hapd->iface->current_rates[i].rate / 5;
111 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
112 *pos |= 0x80;
113 pos++;
114 }
115
116 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht && count < 8) {
117 count++;
118 *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY;
119 }
120
121 if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht && count < 8) {
122 count++;
123 *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY;
124 }
125
126 return pos;
127 }
128
129
130 u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid)
131 {
132 u8 *pos = eid;
133 int i, num, count;
134
135 if (hapd->iface->current_rates == NULL)
136 return eid;
137
138 num = hapd->iface->num_rates;
139 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht)
140 num++;
141 if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht)
142 num++;
143 if (num <= 8)
144 return eid;
145 num -= 8;
146
147 *pos++ = WLAN_EID_EXT_SUPP_RATES;
148 *pos++ = num;
149 for (i = 0, count = 0; i < hapd->iface->num_rates && count < num + 8;
150 i++) {
151 count++;
152 if (count <= 8)
153 continue; /* already in SuppRates IE */
154 *pos = hapd->iface->current_rates[i].rate / 5;
155 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
156 *pos |= 0x80;
157 pos++;
158 }
159
160 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht) {
161 count++;
162 if (count > 8)
163 *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY;
164 }
165
166 if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht) {
167 count++;
168 if (count > 8)
169 *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY;
170 }
171
172 return pos;
173 }
174
175
176 u16 hostapd_own_capab_info(struct hostapd_data *hapd)
177 {
178 int capab = WLAN_CAPABILITY_ESS;
179 int privacy;
180 int dfs;
181 int i;
182
183 /* Check if any of configured channels require DFS */
184 dfs = hostapd_is_dfs_required(hapd->iface);
185 if (dfs < 0) {
186 wpa_printf(MSG_WARNING, "Failed to check if DFS is required; ret=%d",
187 dfs);
188 dfs = 0;
189 }
190
191 if (hapd->iface->num_sta_no_short_preamble == 0 &&
192 hapd->iconf->preamble == SHORT_PREAMBLE)
193 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
194
195 privacy = hapd->conf->ssid.wep.keys_set;
196
197 if (hapd->conf->ieee802_1x &&
198 (hapd->conf->default_wep_key_len ||
199 hapd->conf->individual_wep_key_len))
200 privacy = 1;
201
202 if (hapd->conf->wpa)
203 privacy = 1;
204
205 #ifdef CONFIG_HS20
206 if (hapd->conf->osen)
207 privacy = 1;
208 #endif /* CONFIG_HS20 */
209
210 if (privacy)
211 capab |= WLAN_CAPABILITY_PRIVACY;
212
213 if (hapd->iface->current_mode &&
214 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G &&
215 hapd->iface->num_sta_no_short_slot_time == 0)
216 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
217
218 /*
219 * Currently, Spectrum Management capability bit is set when directly
220 * requested in configuration by spectrum_mgmt_required or when AP is
221 * running on DFS channel.
222 * TODO: Also consider driver support for TPC to set Spectrum Mgmt bit
223 */
224 if (hapd->iface->current_mode &&
225 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211A &&
226 (hapd->iconf->spectrum_mgmt_required || dfs))
227 capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
228
229 for (i = 0; i < RRM_CAPABILITIES_IE_LEN; i++) {
230 if (hapd->conf->radio_measurements[i]) {
231 capab |= IEEE80211_CAP_RRM;
232 break;
233 }
234 }
235
236 return capab;
237 }
238
239
240 #ifndef CONFIG_NO_RC4
241 static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta,
242 u16 auth_transaction, const u8 *challenge,
243 int iswep)
244 {
245 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
246 HOSTAPD_LEVEL_DEBUG,
247 "authentication (shared key, transaction %d)",
248 auth_transaction);
249
250 if (auth_transaction == 1) {
251 if (!sta->challenge) {
252 /* Generate a pseudo-random challenge */
253 u8 key[8];
254
255 sta->challenge = os_zalloc(WLAN_AUTH_CHALLENGE_LEN);
256 if (sta->challenge == NULL)
257 return WLAN_STATUS_UNSPECIFIED_FAILURE;
258
259 if (os_get_random(key, sizeof(key)) < 0) {
260 os_free(sta->challenge);
261 sta->challenge = NULL;
262 return WLAN_STATUS_UNSPECIFIED_FAILURE;
263 }
264
265 rc4_skip(key, sizeof(key), 0,
266 sta->challenge, WLAN_AUTH_CHALLENGE_LEN);
267 }
268 return 0;
269 }
270
271 if (auth_transaction != 3)
272 return WLAN_STATUS_UNSPECIFIED_FAILURE;
273
274 /* Transaction 3 */
275 if (!iswep || !sta->challenge || !challenge ||
276 os_memcmp_const(sta->challenge, challenge,
277 WLAN_AUTH_CHALLENGE_LEN)) {
278 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
279 HOSTAPD_LEVEL_INFO,
280 "shared key authentication - invalid "
281 "challenge-response");
282 return WLAN_STATUS_CHALLENGE_FAIL;
283 }
284
285 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
286 HOSTAPD_LEVEL_DEBUG,
287 "authentication OK (shared key)");
288 sta->flags |= WLAN_STA_AUTH;
289 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
290 os_free(sta->challenge);
291 sta->challenge = NULL;
292
293 return 0;
294 }
295 #endif /* CONFIG_NO_RC4 */
296
297
298 static int send_auth_reply(struct hostapd_data *hapd,
299 const u8 *dst, const u8 *bssid,
300 u16 auth_alg, u16 auth_transaction, u16 resp,
301 const u8 *ies, size_t ies_len, const char *dbg)
302 {
303 struct ieee80211_mgmt *reply;
304 u8 *buf;
305 size_t rlen;
306 int reply_res = WLAN_STATUS_UNSPECIFIED_FAILURE;
307
308 rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth) + ies_len;
309 buf = os_zalloc(rlen);
310 if (buf == NULL)
311 return -1;
312
313 reply = (struct ieee80211_mgmt *) buf;
314 reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
315 WLAN_FC_STYPE_AUTH);
316 os_memcpy(reply->da, dst, ETH_ALEN);
317 os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
318 os_memcpy(reply->bssid, bssid, ETH_ALEN);
319
320 reply->u.auth.auth_alg = host_to_le16(auth_alg);
321 reply->u.auth.auth_transaction = host_to_le16(auth_transaction);
322 reply->u.auth.status_code = host_to_le16(resp);
323
324 if (ies && ies_len)
325 os_memcpy(reply->u.auth.variable, ies, ies_len);
326
327 wpa_printf(MSG_DEBUG, "authentication reply: STA=" MACSTR
328 " auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu) (dbg=%s)",
329 MAC2STR(dst), auth_alg, auth_transaction,
330 resp, (unsigned long) ies_len, dbg);
331 if (hostapd_drv_send_mlme(hapd, reply, rlen, 0) < 0)
332 wpa_printf(MSG_INFO, "send_auth_reply: send failed");
333 else
334 reply_res = WLAN_STATUS_SUCCESS;
335
336 os_free(buf);
337
338 return reply_res;
339 }
340
341
342 #ifdef CONFIG_IEEE80211R_AP
343 static void handle_auth_ft_finish(void *ctx, const u8 *dst, const u8 *bssid,
344 u16 auth_transaction, u16 status,
345 const u8 *ies, size_t ies_len)
346 {
347 struct hostapd_data *hapd = ctx;
348 struct sta_info *sta;
349 int reply_res;
350
351 reply_res = send_auth_reply(hapd, dst, bssid, WLAN_AUTH_FT,
352 auth_transaction, status, ies, ies_len,
353 "auth-ft-finish");
354
355 sta = ap_get_sta(hapd, dst);
356 if (sta == NULL)
357 return;
358
359 if (sta->added_unassoc && (reply_res != WLAN_STATUS_SUCCESS ||
360 status != WLAN_STATUS_SUCCESS)) {
361 hostapd_drv_sta_remove(hapd, sta->addr);
362 sta->added_unassoc = 0;
363 return;
364 }
365
366 if (status != WLAN_STATUS_SUCCESS)
367 return;
368
369 hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211,
370 HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)");
371 sta->flags |= WLAN_STA_AUTH;
372 mlme_authenticate_indication(hapd, sta);
373 }
374 #endif /* CONFIG_IEEE80211R_AP */
375
376
377 #ifdef CONFIG_SAE
378
379 static void sae_set_state(struct sta_info *sta, enum sae_state state,
380 const char *reason)
381 {
382 wpa_printf(MSG_DEBUG, "SAE: State %s -> %s for peer " MACSTR " (%s)",
383 sae_state_txt(sta->sae->state), sae_state_txt(state),
384 MAC2STR(sta->addr), reason);
385 sta->sae->state = state;
386 }
387
388
389 static struct wpabuf * auth_build_sae_commit(struct hostapd_data *hapd,
390 struct sta_info *sta, int update)
391 {
392 struct wpabuf *buf;
393 const char *password = NULL;
394 struct sae_password_entry *pw;
395 const char *rx_id = NULL;
396
397 if (sta->sae->tmp)
398 rx_id = sta->sae->tmp->pw_id;
399
400 for (pw = hapd->conf->sae_passwords; pw; pw = pw->next) {
401 if (!is_broadcast_ether_addr(pw->peer_addr) &&
402 os_memcmp(pw->peer_addr, sta->addr, ETH_ALEN) != 0)
403 continue;
404 if ((rx_id && !pw->identifier) || (!rx_id && pw->identifier))
405 continue;
406 if (rx_id && pw->identifier &&
407 os_strcmp(rx_id, pw->identifier) != 0)
408 continue;
409 password = pw->password;
410 break;
411 }
412 if (!password)
413 password = hapd->conf->ssid.wpa_passphrase;
414 if (!password) {
415 wpa_printf(MSG_DEBUG, "SAE: No password available");
416 return NULL;
417 }
418
419 if (update &&
420 sae_prepare_commit(hapd->own_addr, sta->addr,
421 (u8 *) password, os_strlen(password), rx_id,
422 sta->sae) < 0) {
423 wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE");
424 return NULL;
425 }
426
427 if (pw && pw->vlan_id) {
428 if (!sta->sae->tmp) {
429 wpa_printf(MSG_INFO,
430 "SAE: No temporary data allocated - cannot store VLAN ID");
431 return NULL;
432 }
433 sta->sae->tmp->vlan_id = pw->vlan_id;
434 }
435
436 buf = wpabuf_alloc(SAE_COMMIT_MAX_LEN +
437 (rx_id ? 3 + os_strlen(rx_id) : 0));
438 if (buf == NULL)
439 return NULL;
440 sae_write_commit(sta->sae, buf, sta->sae->tmp ?
441 sta->sae->tmp->anti_clogging_token : NULL, rx_id);
442
443 return buf;
444 }
445
446
447 static struct wpabuf * auth_build_sae_confirm(struct hostapd_data *hapd,
448 struct sta_info *sta)
449 {
450 struct wpabuf *buf;
451
452 buf = wpabuf_alloc(SAE_CONFIRM_MAX_LEN);
453 if (buf == NULL)
454 return NULL;
455
456 sae_write_confirm(sta->sae, buf);
457
458 return buf;
459 }
460
461
462 static int auth_sae_send_commit(struct hostapd_data *hapd,
463 struct sta_info *sta,
464 const u8 *bssid, int update)
465 {
466 struct wpabuf *data;
467 int reply_res;
468
469 data = auth_build_sae_commit(hapd, sta, update);
470 if (!data && sta->sae->tmp && sta->sae->tmp->pw_id)
471 return WLAN_STATUS_UNKNOWN_PASSWORD_IDENTIFIER;
472 if (data == NULL)
473 return WLAN_STATUS_UNSPECIFIED_FAILURE;
474
475 reply_res = send_auth_reply(hapd, sta->addr, bssid, WLAN_AUTH_SAE, 1,
476 WLAN_STATUS_SUCCESS, wpabuf_head(data),
477 wpabuf_len(data), "sae-send-commit");
478
479 wpabuf_free(data);
480
481 return reply_res;
482 }
483
484
485 static int auth_sae_send_confirm(struct hostapd_data *hapd,
486 struct sta_info *sta,
487 const u8 *bssid)
488 {
489 struct wpabuf *data;
490 int reply_res;
491
492 data = auth_build_sae_confirm(hapd, sta);
493 if (data == NULL)
494 return WLAN_STATUS_UNSPECIFIED_FAILURE;
495
496 reply_res = send_auth_reply(hapd, sta->addr, bssid, WLAN_AUTH_SAE, 2,
497 WLAN_STATUS_SUCCESS, wpabuf_head(data),
498 wpabuf_len(data), "sae-send-confirm");
499
500 wpabuf_free(data);
501
502 return reply_res;
503 }
504
505
506 static int use_sae_anti_clogging(struct hostapd_data *hapd)
507 {
508 struct sta_info *sta;
509 unsigned int open = 0;
510
511 if (hapd->conf->sae_anti_clogging_threshold == 0)
512 return 1;
513
514 for (sta = hapd->sta_list; sta; sta = sta->next) {
515 if (!sta->sae)
516 continue;
517 if (sta->sae->state != SAE_COMMITTED &&
518 sta->sae->state != SAE_CONFIRMED)
519 continue;
520 open++;
521 if (open >= hapd->conf->sae_anti_clogging_threshold)
522 return 1;
523 }
524
525 /* In addition to already existing open SAE sessions, check whether
526 * there are enough pending commit messages in the processing queue to
527 * potentially result in too many open sessions. */
528 if (open + dl_list_len(&hapd->sae_commit_queue) >=
529 hapd->conf->sae_anti_clogging_threshold)
530 return 1;
531
532 return 0;
533 }
534
535
536 static u8 sae_token_hash(struct hostapd_data *hapd, const u8 *addr)
537 {
538 u8 hash[SHA256_MAC_LEN];
539
540 hmac_sha256(hapd->sae_token_key, sizeof(hapd->sae_token_key),
541 addr, ETH_ALEN, hash);
542 return hash[0];
543 }
544
545
546 static int check_sae_token(struct hostapd_data *hapd, const u8 *addr,
547 const u8 *token, size_t token_len)
548 {
549 u8 mac[SHA256_MAC_LEN];
550 const u8 *addrs[2];
551 size_t len[2];
552 u16 token_idx;
553 u8 idx;
554
555 if (token_len != SHA256_MAC_LEN)
556 return -1;
557 idx = sae_token_hash(hapd, addr);
558 token_idx = hapd->sae_pending_token_idx[idx];
559 if (token_idx == 0 || token_idx != WPA_GET_BE16(token)) {
560 wpa_printf(MSG_DEBUG, "SAE: Invalid anti-clogging token from "
561 MACSTR " - token_idx 0x%04x, expected 0x%04x",
562 MAC2STR(addr), WPA_GET_BE16(token), token_idx);
563 return -1;
564 }
565
566 addrs[0] = addr;
567 len[0] = ETH_ALEN;
568 addrs[1] = token;
569 len[1] = 2;
570 if (hmac_sha256_vector(hapd->sae_token_key, sizeof(hapd->sae_token_key),
571 2, addrs, len, mac) < 0 ||
572 os_memcmp_const(token + 2, &mac[2], SHA256_MAC_LEN - 2) != 0)
573 return -1;
574
575 hapd->sae_pending_token_idx[idx] = 0; /* invalidate used token */
576
577 return 0;
578 }
579
580
581 static struct wpabuf * auth_build_token_req(struct hostapd_data *hapd,
582 int group, const u8 *addr)
583 {
584 struct wpabuf *buf;
585 u8 *token;
586 struct os_reltime now;
587 u8 idx[2];
588 const u8 *addrs[2];
589 size_t len[2];
590 u8 p_idx;
591 u16 token_idx;
592
593 os_get_reltime(&now);
594 if (!os_reltime_initialized(&hapd->last_sae_token_key_update) ||
595 os_reltime_expired(&now, &hapd->last_sae_token_key_update, 60) ||
596 hapd->sae_token_idx == 0xffff) {
597 if (random_get_bytes(hapd->sae_token_key,
598 sizeof(hapd->sae_token_key)) < 0)
599 return NULL;
600 wpa_hexdump(MSG_DEBUG, "SAE: Updated token key",
601 hapd->sae_token_key, sizeof(hapd->sae_token_key));
602 hapd->last_sae_token_key_update = now;
603 hapd->sae_token_idx = 0;
604 os_memset(hapd->sae_pending_token_idx, 0,
605 sizeof(hapd->sae_pending_token_idx));
606 }
607
608 buf = wpabuf_alloc(sizeof(le16) + SHA256_MAC_LEN);
609 if (buf == NULL)
610 return NULL;
611
612 wpabuf_put_le16(buf, group); /* Finite Cyclic Group */
613
614 p_idx = sae_token_hash(hapd, addr);
615 token_idx = hapd->sae_pending_token_idx[p_idx];
616 if (!token_idx) {
617 hapd->sae_token_idx++;
618 token_idx = hapd->sae_token_idx;
619 hapd->sae_pending_token_idx[p_idx] = token_idx;
620 }
621 WPA_PUT_BE16(idx, token_idx);
622 token = wpabuf_put(buf, SHA256_MAC_LEN);
623 addrs[0] = addr;
624 len[0] = ETH_ALEN;
625 addrs[1] = idx;
626 len[1] = sizeof(idx);
627 if (hmac_sha256_vector(hapd->sae_token_key, sizeof(hapd->sae_token_key),
628 2, addrs, len, token) < 0) {
629 wpabuf_free(buf);
630 return NULL;
631 }
632 WPA_PUT_BE16(token, token_idx);
633
634 return buf;
635 }
636
637
638 static int sae_check_big_sync(struct hostapd_data *hapd, struct sta_info *sta)
639 {
640 if (sta->sae->sync > hapd->conf->sae_sync) {
641 sae_set_state(sta, SAE_NOTHING, "Sync > dot11RSNASAESync");
642 sta->sae->sync = 0;
643 return -1;
644 }
645 return 0;
646 }
647
648
649 static void auth_sae_retransmit_timer(void *eloop_ctx, void *eloop_data)
650 {
651 struct hostapd_data *hapd = eloop_ctx;
652 struct sta_info *sta = eloop_data;
653 int ret;
654
655 if (sae_check_big_sync(hapd, sta))
656 return;
657 sta->sae->sync++;
658 wpa_printf(MSG_DEBUG, "SAE: Auth SAE retransmit timer for " MACSTR
659 " (sync=%d state=%s)",
660 MAC2STR(sta->addr), sta->sae->sync,
661 sae_state_txt(sta->sae->state));
662
663 switch (sta->sae->state) {
664 case SAE_COMMITTED:
665 ret = auth_sae_send_commit(hapd, sta, hapd->own_addr, 0);
666 eloop_register_timeout(0,
667 hapd->dot11RSNASAERetransPeriod * 1000,
668 auth_sae_retransmit_timer, hapd, sta);
669 break;
670 case SAE_CONFIRMED:
671 ret = auth_sae_send_confirm(hapd, sta, hapd->own_addr);
672 eloop_register_timeout(0,
673 hapd->dot11RSNASAERetransPeriod * 1000,
674 auth_sae_retransmit_timer, hapd, sta);
675 break;
676 default:
677 ret = -1;
678 break;
679 }
680
681 if (ret != WLAN_STATUS_SUCCESS)
682 wpa_printf(MSG_INFO, "SAE: Failed to retransmit: ret=%d", ret);
683 }
684
685
686 void sae_clear_retransmit_timer(struct hostapd_data *hapd, struct sta_info *sta)
687 {
688 eloop_cancel_timeout(auth_sae_retransmit_timer, hapd, sta);
689 }
690
691
692 static void sae_set_retransmit_timer(struct hostapd_data *hapd,
693 struct sta_info *sta)
694 {
695 if (!(hapd->conf->mesh & MESH_ENABLED))
696 return;
697
698 eloop_cancel_timeout(auth_sae_retransmit_timer, hapd, sta);
699 eloop_register_timeout(0, hapd->dot11RSNASAERetransPeriod * 1000,
700 auth_sae_retransmit_timer, hapd, sta);
701 }
702
703
704 static void sae_sme_send_external_auth_status(struct hostapd_data *hapd,
705 struct sta_info *sta, u16 status)
706 {
707 struct external_auth params;
708
709 os_memset(&params, 0, sizeof(params));
710 params.status = status;
711 params.bssid = sta->addr;
712 if (status == WLAN_STATUS_SUCCESS && sta->sae)
713 params.pmkid = sta->sae->pmkid;
714
715 hostapd_drv_send_external_auth_status(hapd, &params);
716 }
717
718
719 void sae_accept_sta(struct hostapd_data *hapd, struct sta_info *sta)
720 {
721 #ifndef CONFIG_NO_VLAN
722 struct vlan_description vlan_desc;
723
724 if (sta->sae->tmp && sta->sae->tmp->vlan_id > 0) {
725 wpa_printf(MSG_DEBUG, "SAE: Assign STA " MACSTR
726 " to VLAN ID %d",
727 MAC2STR(sta->addr), sta->sae->tmp->vlan_id);
728
729 os_memset(&vlan_desc, 0, sizeof(vlan_desc));
730 vlan_desc.notempty = 1;
731 vlan_desc.untagged = sta->sae->tmp->vlan_id;
732 if (!hostapd_vlan_valid(hapd->conf->vlan, &vlan_desc)) {
733 wpa_printf(MSG_INFO,
734 "Invalid VLAN ID %d in sae_password",
735 sta->sae->tmp->vlan_id);
736 return;
737 }
738
739 if (ap_sta_set_vlan(hapd, sta, &vlan_desc) < 0 ||
740 ap_sta_bind_vlan(hapd, sta) < 0) {
741 wpa_printf(MSG_INFO,
742 "Failed to assign VLAN ID %d from sae_password to "
743 MACSTR, sta->sae->tmp->vlan_id,
744 MAC2STR(sta->addr));
745 return;
746 }
747 }
748 #endif /* CONFIG_NO_VLAN */
749
750 sta->flags |= WLAN_STA_AUTH;
751 sta->auth_alg = WLAN_AUTH_SAE;
752 mlme_authenticate_indication(hapd, sta);
753 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
754 sae_set_state(sta, SAE_ACCEPTED, "Accept Confirm");
755 wpa_auth_pmksa_add_sae(hapd->wpa_auth, sta->addr,
756 sta->sae->pmk, sta->sae->pmkid);
757 sae_sme_send_external_auth_status(hapd, sta, WLAN_STATUS_SUCCESS);
758 }
759
760
761 static int sae_sm_step(struct hostapd_data *hapd, struct sta_info *sta,
762 const u8 *bssid, u8 auth_transaction, int allow_reuse,
763 int *sta_removed)
764 {
765 int ret;
766
767 *sta_removed = 0;
768
769 if (auth_transaction != 1 && auth_transaction != 2)
770 return WLAN_STATUS_UNSPECIFIED_FAILURE;
771
772 wpa_printf(MSG_DEBUG, "SAE: Peer " MACSTR " state=%s auth_trans=%u",
773 MAC2STR(sta->addr), sae_state_txt(sta->sae->state),
774 auth_transaction);
775 switch (sta->sae->state) {
776 case SAE_NOTHING:
777 if (auth_transaction == 1) {
778 ret = auth_sae_send_commit(hapd, sta, bssid,
779 !allow_reuse);
780 if (ret)
781 return ret;
782 sae_set_state(sta, SAE_COMMITTED, "Sent Commit");
783
784 if (sae_process_commit(sta->sae) < 0)
785 return WLAN_STATUS_UNSPECIFIED_FAILURE;
786
787 /*
788 * In mesh case, both Commit and Confirm can be sent
789 * immediately. In infrastructure BSS, only a single
790 * Authentication frame (Commit) is expected from the AP
791 * here and the second one (Confirm) will be sent once
792 * the STA has sent its second Authentication frame
793 * (Confirm).
794 */
795 if (hapd->conf->mesh & MESH_ENABLED) {
796 /*
797 * Send both Commit and Confirm immediately
798 * based on SAE finite state machine
799 * Nothing -> Confirm transition.
800 */
801 ret = auth_sae_send_confirm(hapd, sta, bssid);
802 if (ret)
803 return ret;
804 sae_set_state(sta, SAE_CONFIRMED,
805 "Sent Confirm (mesh)");
806 } else {
807 /*
808 * For infrastructure BSS, send only the Commit
809 * message now to get alternating sequence of
810 * Authentication frames between the AP and STA.
811 * Confirm will be sent in
812 * Committed -> Confirmed/Accepted transition
813 * when receiving Confirm from STA.
814 */
815 }
816 sta->sae->sync = 0;
817 sae_set_retransmit_timer(hapd, sta);
818 } else {
819 hostapd_logger(hapd, sta->addr,
820 HOSTAPD_MODULE_IEEE80211,
821 HOSTAPD_LEVEL_DEBUG,
822 "SAE confirm before commit");
823 }
824 break;
825 case SAE_COMMITTED:
826 sae_clear_retransmit_timer(hapd, sta);
827 if (auth_transaction == 1) {
828 if (sae_process_commit(sta->sae) < 0)
829 return WLAN_STATUS_UNSPECIFIED_FAILURE;
830
831 ret = auth_sae_send_confirm(hapd, sta, bssid);
832 if (ret)
833 return ret;
834 sae_set_state(sta, SAE_CONFIRMED, "Sent Confirm");
835 sta->sae->sync = 0;
836 sae_set_retransmit_timer(hapd, sta);
837 } else if (hapd->conf->mesh & MESH_ENABLED) {
838 /*
839 * In mesh case, follow SAE finite state machine and
840 * send Commit now, if sync count allows.
841 */
842 if (sae_check_big_sync(hapd, sta))
843 return WLAN_STATUS_SUCCESS;
844 sta->sae->sync++;
845
846 ret = auth_sae_send_commit(hapd, sta, bssid, 0);
847 if (ret)
848 return ret;
849
850 sae_set_retransmit_timer(hapd, sta);
851 } else {
852 /*
853 * For instructure BSS, send the postponed Confirm from
854 * Nothing -> Confirmed transition that was reduced to
855 * Nothing -> Committed above.
856 */
857 ret = auth_sae_send_confirm(hapd, sta, bssid);
858 if (ret)
859 return ret;
860
861 sae_set_state(sta, SAE_CONFIRMED, "Sent Confirm");
862
863 /*
864 * Since this was triggered on Confirm RX, run another
865 * step to get to Accepted without waiting for
866 * additional events.
867 */
868 return sae_sm_step(hapd, sta, bssid, auth_transaction,
869 0, sta_removed);
870 }
871 break;
872 case SAE_CONFIRMED:
873 sae_clear_retransmit_timer(hapd, sta);
874 if (auth_transaction == 1) {
875 if (sae_check_big_sync(hapd, sta))
876 return WLAN_STATUS_SUCCESS;
877 sta->sae->sync++;
878
879 ret = auth_sae_send_commit(hapd, sta, bssid, 1);
880 if (ret)
881 return ret;
882
883 if (sae_process_commit(sta->sae) < 0)
884 return WLAN_STATUS_UNSPECIFIED_FAILURE;
885
886 ret = auth_sae_send_confirm(hapd, sta, bssid);
887 if (ret)
888 return ret;
889
890 sae_set_retransmit_timer(hapd, sta);
891 } else {
892 sta->sae->send_confirm = 0xffff;
893 sae_accept_sta(hapd, sta);
894 }
895 break;
896 case SAE_ACCEPTED:
897 if (auth_transaction == 1 &&
898 (hapd->conf->mesh & MESH_ENABLED)) {
899 wpa_printf(MSG_DEBUG, "SAE: remove the STA (" MACSTR
900 ") doing reauthentication",
901 MAC2STR(sta->addr));
902 wpa_auth_pmksa_remove(hapd->wpa_auth, sta->addr);
903 ap_free_sta(hapd, sta);
904 *sta_removed = 1;
905 } else if (auth_transaction == 1) {
906 wpa_printf(MSG_DEBUG, "SAE: Start reauthentication");
907 ret = auth_sae_send_commit(hapd, sta, bssid, 1);
908 if (ret)
909 return ret;
910 sae_set_state(sta, SAE_COMMITTED, "Sent Commit");
911
912 if (sae_process_commit(sta->sae) < 0)
913 return WLAN_STATUS_UNSPECIFIED_FAILURE;
914 sta->sae->sync = 0;
915 sae_set_retransmit_timer(hapd, sta);
916 } else {
917 if (sae_check_big_sync(hapd, sta))
918 return WLAN_STATUS_SUCCESS;
919 sta->sae->sync++;
920
921 ret = auth_sae_send_confirm(hapd, sta, bssid);
922 sae_clear_temp_data(sta->sae);
923 if (ret)
924 return ret;
925 }
926 break;
927 default:
928 wpa_printf(MSG_ERROR, "SAE: invalid state %d",
929 sta->sae->state);
930 return WLAN_STATUS_UNSPECIFIED_FAILURE;
931 }
932 return WLAN_STATUS_SUCCESS;
933 }
934
935
936 static void sae_pick_next_group(struct hostapd_data *hapd, struct sta_info *sta)
937 {
938 struct sae_data *sae = sta->sae;
939 int i, *groups = hapd->conf->sae_groups;
940 int default_groups[] = { 19, 0 };
941
942 if (sae->state != SAE_COMMITTED)
943 return;
944
945 wpa_printf(MSG_DEBUG, "SAE: Previously selected group: %d", sae->group);
946
947 if (!groups)
948 groups = default_groups;
949 for (i = 0; groups[i] > 0; i++) {
950 if (sae->group == groups[i])
951 break;
952 }
953
954 if (groups[i] <= 0) {
955 wpa_printf(MSG_DEBUG,
956 "SAE: Previously selected group not found from the current configuration");
957 return;
958 }
959
960 for (;;) {
961 i++;
962 if (groups[i] <= 0) {
963 wpa_printf(MSG_DEBUG,
964 "SAE: No alternative group enabled");
965 return;
966 }
967
968 if (sae_set_group(sae, groups[i]) < 0)
969 continue;
970
971 break;
972 }
973 wpa_printf(MSG_DEBUG, "SAE: Selected new group: %d", groups[i]);
974 }
975
976
977 static void handle_auth_sae(struct hostapd_data *hapd, struct sta_info *sta,
978 const struct ieee80211_mgmt *mgmt, size_t len,
979 u16 auth_transaction, u16 status_code)
980 {
981 int resp = WLAN_STATUS_SUCCESS;
982 struct wpabuf *data = NULL;
983 int *groups = hapd->conf->sae_groups;
984 int default_groups[] = { 19, 0 };
985 const u8 *pos, *end;
986 int sta_removed = 0;
987
988 if (!groups)
989 groups = default_groups;
990
991 #ifdef CONFIG_TESTING_OPTIONS
992 if (hapd->conf->sae_reflection_attack && auth_transaction == 1) {
993 wpa_printf(MSG_DEBUG, "SAE: TESTING - reflection attack");
994 pos = mgmt->u.auth.variable;
995 end = ((const u8 *) mgmt) + len;
996 send_auth_reply(hapd, mgmt->sa, mgmt->bssid, WLAN_AUTH_SAE,
997 auth_transaction, resp, pos, end - pos,
998 "auth-sae-reflection-attack");
999 goto remove_sta;
1000 }
1001
1002 if (hapd->conf->sae_commit_override && auth_transaction == 1) {
1003 wpa_printf(MSG_DEBUG, "SAE: TESTING - commit override");
1004 send_auth_reply(hapd, mgmt->sa, mgmt->bssid, WLAN_AUTH_SAE,
1005 auth_transaction, resp,
1006 wpabuf_head(hapd->conf->sae_commit_override),
1007 wpabuf_len(hapd->conf->sae_commit_override),
1008 "sae-commit-override");
1009 goto remove_sta;
1010 }
1011 #endif /* CONFIG_TESTING_OPTIONS */
1012 if (!sta->sae) {
1013 if (auth_transaction != 1 ||
1014 status_code != WLAN_STATUS_SUCCESS) {
1015 resp = -1;
1016 goto remove_sta;
1017 }
1018 sta->sae = os_zalloc(sizeof(*sta->sae));
1019 if (!sta->sae) {
1020 resp = -1;
1021 goto remove_sta;
1022 }
1023 sae_set_state(sta, SAE_NOTHING, "Init");
1024 sta->sae->sync = 0;
1025 }
1026
1027 if (sta->mesh_sae_pmksa_caching) {
1028 wpa_printf(MSG_DEBUG,
1029 "SAE: Cancel use of mesh PMKSA caching because peer starts SAE authentication");
1030 wpa_auth_pmksa_remove(hapd->wpa_auth, sta->addr);
1031 sta->mesh_sae_pmksa_caching = 0;
1032 }
1033
1034 if (auth_transaction == 1) {
1035 const u8 *token = NULL;
1036 size_t token_len = 0;
1037 int allow_reuse = 0;
1038
1039 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1040 HOSTAPD_LEVEL_DEBUG,
1041 "start SAE authentication (RX commit, status=%u (%s))",
1042 status_code, status2str(status_code));
1043
1044 if ((hapd->conf->mesh & MESH_ENABLED) &&
1045 status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
1046 sta->sae->tmp) {
1047 pos = mgmt->u.auth.variable;
1048 end = ((const u8 *) mgmt) + len;
1049 if (pos + sizeof(le16) > end) {
1050 wpa_printf(MSG_ERROR,
1051 "SAE: Too short anti-clogging token request");
1052 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1053 goto reply;
1054 }
1055 resp = sae_group_allowed(sta->sae, groups,
1056 WPA_GET_LE16(pos));
1057 if (resp != WLAN_STATUS_SUCCESS) {
1058 wpa_printf(MSG_ERROR,
1059 "SAE: Invalid group in anti-clogging token request");
1060 goto reply;
1061 }
1062 pos += sizeof(le16);
1063
1064 wpabuf_free(sta->sae->tmp->anti_clogging_token);
1065 sta->sae->tmp->anti_clogging_token =
1066 wpabuf_alloc_copy(pos, end - pos);
1067 if (sta->sae->tmp->anti_clogging_token == NULL) {
1068 wpa_printf(MSG_ERROR,
1069 "SAE: Failed to alloc for anti-clogging token");
1070 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1071 goto remove_sta;
1072 }
1073
1074 /*
1075 * IEEE Std 802.11-2012, 11.3.8.6.4: If the Status code
1076 * is 76, a new Commit Message shall be constructed
1077 * with the Anti-Clogging Token from the received
1078 * Authentication frame, and the commit-scalar and
1079 * COMMIT-ELEMENT previously sent.
1080 */
1081 resp = auth_sae_send_commit(hapd, sta, mgmt->bssid, 0);
1082 if (resp != WLAN_STATUS_SUCCESS) {
1083 wpa_printf(MSG_ERROR,
1084 "SAE: Failed to send commit message");
1085 goto remove_sta;
1086 }
1087 sae_set_state(sta, SAE_COMMITTED,
1088 "Sent Commit (anti-clogging token case in mesh)");
1089 sta->sae->sync = 0;
1090 sae_set_retransmit_timer(hapd, sta);
1091 return;
1092 }
1093
1094 if ((hapd->conf->mesh & MESH_ENABLED) &&
1095 status_code ==
1096 WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
1097 sta->sae->tmp) {
1098 wpa_printf(MSG_DEBUG,
1099 "SAE: Peer did not accept our SAE group");
1100 sae_pick_next_group(hapd, sta);
1101 goto remove_sta;
1102 }
1103
1104 if (status_code != WLAN_STATUS_SUCCESS)
1105 goto remove_sta;
1106
1107 if (!(hapd->conf->mesh & MESH_ENABLED) &&
1108 sta->sae->state == SAE_COMMITTED) {
1109 /* This is needed in the infrastructure BSS case to
1110 * address a sequence where a STA entry may remain in
1111 * hostapd across two attempts to do SAE authentication
1112 * by the same STA. The second attempt may end up trying
1113 * to use a different group and that would not be
1114 * allowed if we remain in Committed state with the
1115 * previously set parameters. */
1116 pos = mgmt->u.auth.variable;
1117 end = ((const u8 *) mgmt) + len;
1118 if (end - pos >= (int) sizeof(le16) &&
1119 sae_group_allowed(sta->sae, groups,
1120 WPA_GET_LE16(pos)) ==
1121 WLAN_STATUS_SUCCESS) {
1122 /* Do not waste resources deriving the same PWE
1123 * again since the same group is reused. */
1124 sae_set_state(sta, SAE_NOTHING,
1125 "Allow previous PWE to be reused");
1126 allow_reuse = 1;
1127 } else {
1128 sae_set_state(sta, SAE_NOTHING,
1129 "Clear existing state to allow restart");
1130 sae_clear_data(sta->sae);
1131 }
1132 }
1133
1134 resp = sae_parse_commit(sta->sae, mgmt->u.auth.variable,
1135 ((const u8 *) mgmt) + len -
1136 mgmt->u.auth.variable, &token,
1137 &token_len, groups);
1138 if (resp == SAE_SILENTLY_DISCARD) {
1139 wpa_printf(MSG_DEBUG,
1140 "SAE: Drop commit message from " MACSTR " due to reflection attack",
1141 MAC2STR(sta->addr));
1142 goto remove_sta;
1143 }
1144
1145 if (resp == WLAN_STATUS_UNKNOWN_PASSWORD_IDENTIFIER) {
1146 wpa_msg(hapd->msg_ctx, MSG_INFO,
1147 WPA_EVENT_SAE_UNKNOWN_PASSWORD_IDENTIFIER
1148 MACSTR, MAC2STR(sta->addr));
1149 sae_clear_retransmit_timer(hapd, sta);
1150 sae_set_state(sta, SAE_NOTHING,
1151 "Unknown Password Identifier");
1152 goto remove_sta;
1153 }
1154
1155 if (token && check_sae_token(hapd, sta->addr, token, token_len)
1156 < 0) {
1157 wpa_printf(MSG_DEBUG, "SAE: Drop commit message with "
1158 "incorrect token from " MACSTR,
1159 MAC2STR(sta->addr));
1160 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1161 goto remove_sta;
1162 }
1163
1164 if (resp != WLAN_STATUS_SUCCESS)
1165 goto reply;
1166
1167 if (!token && use_sae_anti_clogging(hapd) && !allow_reuse) {
1168 wpa_printf(MSG_DEBUG,
1169 "SAE: Request anti-clogging token from "
1170 MACSTR, MAC2STR(sta->addr));
1171 data = auth_build_token_req(hapd, sta->sae->group,
1172 sta->addr);
1173 resp = WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ;
1174 if (hapd->conf->mesh & MESH_ENABLED)
1175 sae_set_state(sta, SAE_NOTHING,
1176 "Request anti-clogging token case in mesh");
1177 goto reply;
1178 }
1179
1180 resp = sae_sm_step(hapd, sta, mgmt->bssid, auth_transaction,
1181 allow_reuse, &sta_removed);
1182 } else if (auth_transaction == 2) {
1183 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1184 HOSTAPD_LEVEL_DEBUG,
1185 "SAE authentication (RX confirm, status=%u (%s))",
1186 status_code, status2str(status_code));
1187 if (status_code != WLAN_STATUS_SUCCESS)
1188 goto remove_sta;
1189 if (sta->sae->state >= SAE_CONFIRMED ||
1190 !(hapd->conf->mesh & MESH_ENABLED)) {
1191 const u8 *var;
1192 size_t var_len;
1193 u16 peer_send_confirm;
1194
1195 var = mgmt->u.auth.variable;
1196 var_len = ((u8 *) mgmt) + len - mgmt->u.auth.variable;
1197 if (var_len < 2) {
1198 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1199 goto reply;
1200 }
1201
1202 peer_send_confirm = WPA_GET_LE16(var);
1203
1204 if (sta->sae->state == SAE_ACCEPTED &&
1205 (peer_send_confirm <= sta->sae->rc ||
1206 peer_send_confirm == 0xffff)) {
1207 wpa_printf(MSG_DEBUG,
1208 "SAE: Silently ignore unexpected Confirm from peer "
1209 MACSTR
1210 " (peer-send-confirm=%u Rc=%u)",
1211 MAC2STR(sta->addr),
1212 peer_send_confirm, sta->sae->rc);
1213 return;
1214 }
1215
1216 if (sae_check_confirm(sta->sae, var, var_len) < 0) {
1217 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1218 goto reply;
1219 }
1220 sta->sae->rc = peer_send_confirm;
1221 }
1222 resp = sae_sm_step(hapd, sta, mgmt->bssid, auth_transaction, 0,
1223 &sta_removed);
1224 } else {
1225 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1226 HOSTAPD_LEVEL_DEBUG,
1227 "unexpected SAE authentication transaction %u (status=%u (%s))",
1228 auth_transaction, status_code,
1229 status2str(status_code));
1230 if (status_code != WLAN_STATUS_SUCCESS)
1231 goto remove_sta;
1232 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1233 }
1234
1235 reply:
1236 if (!sta_removed && resp != WLAN_STATUS_SUCCESS) {
1237 pos = mgmt->u.auth.variable;
1238 end = ((const u8 *) mgmt) + len;
1239
1240 /* Copy the Finite Cyclic Group field from the request if we
1241 * rejected it as unsupported group. */
1242 if (resp == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
1243 !data && end - pos >= 2)
1244 data = wpabuf_alloc_copy(pos, 2);
1245
1246 sae_sme_send_external_auth_status(hapd, sta, resp);
1247 send_auth_reply(hapd, mgmt->sa, mgmt->bssid, WLAN_AUTH_SAE,
1248 auth_transaction, resp,
1249 data ? wpabuf_head(data) : (u8 *) "",
1250 data ? wpabuf_len(data) : 0, "auth-sae");
1251 }
1252
1253 remove_sta:
1254 if (!sta_removed && sta->added_unassoc &&
1255 (resp != WLAN_STATUS_SUCCESS ||
1256 status_code != WLAN_STATUS_SUCCESS)) {
1257 hostapd_drv_sta_remove(hapd, sta->addr);
1258 sta->added_unassoc = 0;
1259 }
1260 wpabuf_free(data);
1261 }
1262
1263
1264 /**
1265 * auth_sae_init_committed - Send COMMIT and start SAE in committed state
1266 * @hapd: BSS data for the device initiating the authentication
1267 * @sta: the peer to which commit authentication frame is sent
1268 *
1269 * This function implements Init event handling (IEEE Std 802.11-2012,
1270 * 11.3.8.6.3) in which initial COMMIT message is sent. Prior to calling, the
1271 * sta->sae structure should be initialized appropriately via a call to
1272 * sae_prepare_commit().
1273 */
1274 int auth_sae_init_committed(struct hostapd_data *hapd, struct sta_info *sta)
1275 {
1276 int ret;
1277
1278 if (!sta->sae || !sta->sae->tmp)
1279 return -1;
1280
1281 if (sta->sae->state != SAE_NOTHING)
1282 return -1;
1283
1284 ret = auth_sae_send_commit(hapd, sta, hapd->own_addr, 0);
1285 if (ret)
1286 return -1;
1287
1288 sae_set_state(sta, SAE_COMMITTED, "Init and sent commit");
1289 sta->sae->sync = 0;
1290 sae_set_retransmit_timer(hapd, sta);
1291
1292 return 0;
1293 }
1294
1295
1296 void auth_sae_process_commit(void *eloop_ctx, void *user_ctx)
1297 {
1298 struct hostapd_data *hapd = eloop_ctx;
1299 struct hostapd_sae_commit_queue *q;
1300 unsigned int queue_len;
1301
1302 q = dl_list_first(&hapd->sae_commit_queue,
1303 struct hostapd_sae_commit_queue, list);
1304 if (!q)
1305 return;
1306 wpa_printf(MSG_DEBUG,
1307 "SAE: Process next available message from queue");
1308 dl_list_del(&q->list);
1309 handle_auth(hapd, (const struct ieee80211_mgmt *) q->msg, q->len,
1310 q->rssi, 1);
1311 os_free(q);
1312
1313 if (eloop_is_timeout_registered(auth_sae_process_commit, hapd, NULL))
1314 return;
1315 queue_len = dl_list_len(&hapd->sae_commit_queue);
1316 eloop_register_timeout(0, queue_len * 10000, auth_sae_process_commit,
1317 hapd, NULL);
1318 }
1319
1320
1321 static void auth_sae_queue(struct hostapd_data *hapd,
1322 const struct ieee80211_mgmt *mgmt, size_t len,
1323 int rssi)
1324 {
1325 struct hostapd_sae_commit_queue *q, *q2;
1326 unsigned int queue_len;
1327 const struct ieee80211_mgmt *mgmt2;
1328
1329 queue_len = dl_list_len(&hapd->sae_commit_queue);
1330 if (queue_len >= 15) {
1331 wpa_printf(MSG_DEBUG,
1332 "SAE: No more room in message queue - drop the new frame from "
1333 MACSTR, MAC2STR(mgmt->sa));
1334 return;
1335 }
1336
1337 wpa_printf(MSG_DEBUG, "SAE: Queue Authentication message from "
1338 MACSTR " for processing (queue_len %u)", MAC2STR(mgmt->sa),
1339 queue_len);
1340 q = os_zalloc(sizeof(*q) + len);
1341 if (!q)
1342 return;
1343 q->rssi = rssi;
1344 q->len = len;
1345 os_memcpy(q->msg, mgmt, len);
1346
1347 /* Check whether there is already a queued Authentication frame from the
1348 * same station with the same transaction number and if so, replace that
1349 * queue entry with the new one. This avoids issues with a peer that
1350 * sends multiple times (e.g., due to frequent SAE retries). There is no
1351 * point in us trying to process the old attempts after a new one has
1352 * obsoleted them. */
1353 dl_list_for_each(q2, &hapd->sae_commit_queue,
1354 struct hostapd_sae_commit_queue, list) {
1355 mgmt2 = (const struct ieee80211_mgmt *) q2->msg;
1356 if (os_memcmp(mgmt->sa, mgmt2->sa, ETH_ALEN) == 0 &&
1357 mgmt->u.auth.auth_transaction ==
1358 mgmt2->u.auth.auth_transaction) {
1359 wpa_printf(MSG_DEBUG,
1360 "SAE: Replace queued message from same STA with same transaction number");
1361 dl_list_add(&q2->list, &q->list);
1362 dl_list_del(&q2->list);
1363 os_free(q2);
1364 goto queued;
1365 }
1366 }
1367
1368 /* No pending identical entry, so add to the end of the queue */
1369 dl_list_add_tail(&hapd->sae_commit_queue, &q->list);
1370
1371 queued:
1372 if (eloop_is_timeout_registered(auth_sae_process_commit, hapd, NULL))
1373 return;
1374 eloop_register_timeout(0, queue_len * 10000, auth_sae_process_commit,
1375 hapd, NULL);
1376 }
1377
1378
1379 static int auth_sae_queued_addr(struct hostapd_data *hapd, const u8 *addr)
1380 {
1381 struct hostapd_sae_commit_queue *q;
1382 const struct ieee80211_mgmt *mgmt;
1383
1384 dl_list_for_each(q, &hapd->sae_commit_queue,
1385 struct hostapd_sae_commit_queue, list) {
1386 mgmt = (const struct ieee80211_mgmt *) q->msg;
1387 if (os_memcmp(addr, mgmt->sa, ETH_ALEN) == 0)
1388 return 1;
1389 }
1390
1391 return 0;
1392 }
1393
1394 #endif /* CONFIG_SAE */
1395
1396
1397 static u16 wpa_res_to_status_code(int res)
1398 {
1399 if (res == WPA_INVALID_GROUP)
1400 return WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
1401 if (res == WPA_INVALID_PAIRWISE)
1402 return WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
1403 if (res == WPA_INVALID_AKMP)
1404 return WLAN_STATUS_AKMP_NOT_VALID;
1405 if (res == WPA_ALLOC_FAIL)
1406 return WLAN_STATUS_UNSPECIFIED_FAILURE;
1407 #ifdef CONFIG_IEEE80211W
1408 if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION)
1409 return WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
1410 if (res == WPA_INVALID_MGMT_GROUP_CIPHER)
1411 return WLAN_STATUS_CIPHER_REJECTED_PER_POLICY;
1412 #endif /* CONFIG_IEEE80211W */
1413 if (res == WPA_INVALID_MDIE)
1414 return WLAN_STATUS_INVALID_MDIE;
1415 if (res == WPA_INVALID_PMKID)
1416 return WLAN_STATUS_INVALID_PMKID;
1417 if (res != WPA_IE_OK)
1418 return WLAN_STATUS_INVALID_IE;
1419 return WLAN_STATUS_SUCCESS;
1420 }
1421
1422
1423 #ifdef CONFIG_FILS
1424
1425 static void handle_auth_fils_finish(struct hostapd_data *hapd,
1426 struct sta_info *sta, u16 resp,
1427 struct wpabuf *data, int pub);
1428
1429 void handle_auth_fils(struct hostapd_data *hapd, struct sta_info *sta,
1430 const u8 *pos, size_t len, u16 auth_alg,
1431 u16 auth_transaction, u16 status_code,
1432 void (*cb)(struct hostapd_data *hapd,
1433 struct sta_info *sta, u16 resp,
1434 struct wpabuf *data, int pub))
1435 {
1436 u16 resp = WLAN_STATUS_SUCCESS;
1437 const u8 *end;
1438 struct ieee802_11_elems elems;
1439 int res;
1440 struct wpa_ie_data rsn;
1441 struct rsn_pmksa_cache_entry *pmksa = NULL;
1442
1443 if (auth_transaction != 1 || status_code != WLAN_STATUS_SUCCESS)
1444 return;
1445
1446 end = pos + len;
1447
1448 wpa_hexdump(MSG_DEBUG, "FILS: Authentication frame fields",
1449 pos, end - pos);
1450
1451 /* TODO: FILS PK */
1452 #ifdef CONFIG_FILS_SK_PFS
1453 if (auth_alg == WLAN_AUTH_FILS_SK_PFS) {
1454 u16 group;
1455 struct wpabuf *pub;
1456 size_t elem_len;
1457
1458 /* Using FILS PFS */
1459
1460 /* Finite Cyclic Group */
1461 if (end - pos < 2) {
1462 wpa_printf(MSG_DEBUG,
1463 "FILS: No room for Finite Cyclic Group");
1464 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1465 goto fail;
1466 }
1467 group = WPA_GET_LE16(pos);
1468 pos += 2;
1469 if (group != hapd->conf->fils_dh_group) {
1470 wpa_printf(MSG_DEBUG,
1471 "FILS: Unsupported Finite Cyclic Group: %u (expected %u)",
1472 group, hapd->conf->fils_dh_group);
1473 resp = WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED;
1474 goto fail;
1475 }
1476
1477 crypto_ecdh_deinit(sta->fils_ecdh);
1478 sta->fils_ecdh = crypto_ecdh_init(group);
1479 if (!sta->fils_ecdh) {
1480 wpa_printf(MSG_INFO,
1481 "FILS: Could not initialize ECDH with group %d",
1482 group);
1483 resp = WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED;
1484 goto fail;
1485 }
1486
1487 pub = crypto_ecdh_get_pubkey(sta->fils_ecdh, 1);
1488 if (!pub) {
1489 wpa_printf(MSG_DEBUG,
1490 "FILS: Failed to derive ECDH public key");
1491 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1492 goto fail;
1493 }
1494 elem_len = wpabuf_len(pub);
1495 wpabuf_free(pub);
1496
1497 /* Element */
1498 if ((size_t) (end - pos) < elem_len) {
1499 wpa_printf(MSG_DEBUG, "FILS: No room for Element");
1500 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1501 goto fail;
1502 }
1503
1504 wpabuf_free(sta->fils_g_sta);
1505 sta->fils_g_sta = wpabuf_alloc_copy(pos, elem_len);
1506 wpabuf_clear_free(sta->fils_dh_ss);
1507 sta->fils_dh_ss = crypto_ecdh_set_peerkey(sta->fils_ecdh, 1,
1508 pos, elem_len);
1509 if (!sta->fils_dh_ss) {
1510 wpa_printf(MSG_DEBUG, "FILS: ECDH operation failed");
1511 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1512 goto fail;
1513 }
1514 wpa_hexdump_buf_key(MSG_DEBUG, "FILS: DH_SS", sta->fils_dh_ss);
1515 pos += elem_len;
1516 } else {
1517 crypto_ecdh_deinit(sta->fils_ecdh);
1518 sta->fils_ecdh = NULL;
1519 wpabuf_clear_free(sta->fils_dh_ss);
1520 sta->fils_dh_ss = NULL;
1521 }
1522 #endif /* CONFIG_FILS_SK_PFS */
1523
1524 wpa_hexdump(MSG_DEBUG, "FILS: Remaining IEs", pos, end - pos);
1525 if (ieee802_11_parse_elems(pos, end - pos, &elems, 1) == ParseFailed) {
1526 wpa_printf(MSG_DEBUG, "FILS: Could not parse elements");
1527 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1528 goto fail;
1529 }
1530
1531 /* RSNE */
1532 wpa_hexdump(MSG_DEBUG, "FILS: RSN element",
1533 elems.rsn_ie, elems.rsn_ie_len);
1534 if (!elems.rsn_ie ||
1535 wpa_parse_wpa_ie_rsn(elems.rsn_ie - 2, elems.rsn_ie_len + 2,
1536 &rsn) < 0) {
1537 wpa_printf(MSG_DEBUG, "FILS: No valid RSN element");
1538 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1539 goto fail;
1540 }
1541
1542 if (!sta->wpa_sm)
1543 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, sta->addr,
1544 NULL);
1545 if (!sta->wpa_sm) {
1546 wpa_printf(MSG_DEBUG,
1547 "FILS: Failed to initialize RSN state machine");
1548 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1549 goto fail;
1550 }
1551
1552 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
1553 hapd->iface->freq,
1554 elems.rsn_ie - 2, elems.rsn_ie_len + 2,
1555 elems.mdie, elems.mdie_len, NULL, 0);
1556 resp = wpa_res_to_status_code(res);
1557 if (resp != WLAN_STATUS_SUCCESS)
1558 goto fail;
1559
1560 if (!elems.fils_nonce) {
1561 wpa_printf(MSG_DEBUG, "FILS: No FILS Nonce field");
1562 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1563 goto fail;
1564 }
1565 wpa_hexdump(MSG_DEBUG, "FILS: SNonce", elems.fils_nonce,
1566 FILS_NONCE_LEN);
1567 os_memcpy(sta->fils_snonce, elems.fils_nonce, FILS_NONCE_LEN);
1568
1569 /* PMKID List */
1570 if (rsn.pmkid && rsn.num_pmkid > 0) {
1571 u8 num;
1572 const u8 *pmkid;
1573
1574 wpa_hexdump(MSG_DEBUG, "FILS: PMKID List",
1575 rsn.pmkid, rsn.num_pmkid * PMKID_LEN);
1576
1577 pmkid = rsn.pmkid;
1578 num = rsn.num_pmkid;
1579 while (num) {
1580 wpa_hexdump(MSG_DEBUG, "FILS: PMKID", pmkid, PMKID_LEN);
1581 pmksa = wpa_auth_pmksa_get(hapd->wpa_auth, sta->addr,
1582 pmkid);
1583 if (pmksa)
1584 break;
1585 pmksa = wpa_auth_pmksa_get_fils_cache_id(hapd->wpa_auth,
1586 sta->addr,
1587 pmkid);
1588 if (pmksa)
1589 break;
1590 pmkid += PMKID_LEN;
1591 num--;
1592 }
1593 }
1594 if (pmksa && wpa_auth_sta_key_mgmt(sta->wpa_sm) != pmksa->akmp) {
1595 wpa_printf(MSG_DEBUG,
1596 "FILS: Matching PMKSA cache entry has different AKMP (0x%x != 0x%x) - ignore",
1597 wpa_auth_sta_key_mgmt(sta->wpa_sm), pmksa->akmp);
1598 pmksa = NULL;
1599 }
1600 if (pmksa)
1601 wpa_printf(MSG_DEBUG, "FILS: Found matching PMKSA cache entry");
1602
1603 /* FILS Session */
1604 if (!elems.fils_session) {
1605 wpa_printf(MSG_DEBUG, "FILS: No FILS Session element");
1606 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1607 goto fail;
1608 }
1609 wpa_hexdump(MSG_DEBUG, "FILS: FILS Session", elems.fils_session,
1610 FILS_SESSION_LEN);
1611 os_memcpy(sta->fils_session, elems.fils_session, FILS_SESSION_LEN);
1612
1613 /* FILS Wrapped Data */
1614 if (elems.fils_wrapped_data) {
1615 wpa_hexdump(MSG_DEBUG, "FILS: Wrapped Data",
1616 elems.fils_wrapped_data,
1617 elems.fils_wrapped_data_len);
1618 if (!pmksa) {
1619 #ifndef CONFIG_NO_RADIUS
1620 if (!sta->eapol_sm) {
1621 sta->eapol_sm =
1622 ieee802_1x_alloc_eapol_sm(hapd, sta);
1623 }
1624 wpa_printf(MSG_DEBUG,
1625 "FILS: Forward EAP-Initiate/Re-auth to authentication server");
1626 ieee802_1x_encapsulate_radius(
1627 hapd, sta, elems.fils_wrapped_data,
1628 elems.fils_wrapped_data_len);
1629 sta->fils_pending_cb = cb;
1630 wpa_printf(MSG_DEBUG,
1631 "FILS: Will send Authentication frame once the response from authentication server is available");
1632 sta->flags |= WLAN_STA_PENDING_FILS_ERP;
1633 /* Calculate pending PMKID here so that we do not need
1634 * to maintain a copy of the EAP-Initiate/Reauth
1635 * message. */
1636 if (fils_pmkid_erp(wpa_auth_sta_key_mgmt(sta->wpa_sm),
1637 elems.fils_wrapped_data,
1638 elems.fils_wrapped_data_len,
1639 sta->fils_erp_pmkid) == 0)
1640 sta->fils_erp_pmkid_set = 1;
1641 return;
1642 #else /* CONFIG_NO_RADIUS */
1643 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1644 goto fail;
1645 #endif /* CONFIG_NO_RADIUS */
1646 }
1647 }
1648
1649 fail:
1650 if (cb) {
1651 struct wpabuf *data;
1652 int pub = 0;
1653
1654 data = prepare_auth_resp_fils(hapd, sta, &resp, pmksa, NULL,
1655 NULL, 0, &pub);
1656 if (!data) {
1657 wpa_printf(MSG_DEBUG,
1658 "%s: prepare_auth_resp_fils() returned failure",
1659 __func__);
1660 }
1661
1662 cb(hapd, sta, resp, data, pub);
1663 }
1664 }
1665
1666
1667 static struct wpabuf *
1668 prepare_auth_resp_fils(struct hostapd_data *hapd,
1669 struct sta_info *sta, u16 *resp,
1670 struct rsn_pmksa_cache_entry *pmksa,
1671 struct wpabuf *erp_resp,
1672 const u8 *msk, size_t msk_len,
1673 int *is_pub)
1674 {
1675 u8 fils_nonce[FILS_NONCE_LEN];
1676 size_t ielen;
1677 struct wpabuf *data = NULL;
1678 const u8 *ie;
1679 u8 *ie_buf = NULL;
1680 const u8 *pmk = NULL;
1681 size_t pmk_len = 0;
1682 u8 pmk_buf[PMK_LEN_MAX];
1683 struct wpabuf *pub = NULL;
1684
1685 if (*resp != WLAN_STATUS_SUCCESS)
1686 goto fail;
1687
1688 ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &ielen);
1689 if (!ie) {
1690 *resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1691 goto fail;
1692 }
1693
1694 if (pmksa) {
1695 /* Add PMKID of the selected PMKSA into RSNE */
1696 ie_buf = os_malloc(ielen + 2 + 2 + PMKID_LEN);
1697 if (!ie_buf) {
1698 *resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1699 goto fail;
1700 }
1701
1702 os_memcpy(ie_buf, ie, ielen);
1703 if (wpa_insert_pmkid(ie_buf, &ielen, pmksa->pmkid) < 0) {
1704 *resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1705 goto fail;
1706 }
1707 ie = ie_buf;
1708 }
1709
1710 if (random_get_bytes(fils_nonce, FILS_NONCE_LEN) < 0) {
1711 *resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1712 goto fail;
1713 }
1714 wpa_hexdump(MSG_DEBUG, "RSN: Generated FILS Nonce",
1715 fils_nonce, FILS_NONCE_LEN);
1716
1717 #ifdef CONFIG_FILS_SK_PFS
1718 if (sta->fils_dh_ss && sta->fils_ecdh) {
1719 pub = crypto_ecdh_get_pubkey(sta->fils_ecdh, 1);
1720 if (!pub) {
1721 *resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1722 goto fail;
1723 }
1724 }
1725 #endif /* CONFIG_FILS_SK_PFS */
1726
1727 data = wpabuf_alloc(1000 + ielen + (pub ? wpabuf_len(pub) : 0));
1728 if (!data) {
1729 *resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1730 goto fail;
1731 }
1732
1733 /* TODO: FILS PK */
1734 #ifdef CONFIG_FILS_SK_PFS
1735 if (pub) {
1736 /* Finite Cyclic Group */
1737 wpabuf_put_le16(data, hapd->conf->fils_dh_group);
1738
1739 /* Element */
1740 wpabuf_put_buf(data, pub);
1741 }
1742 #endif /* CONFIG_FILS_SK_PFS */
1743
1744 /* RSNE */
1745 wpabuf_put_data(data, ie, ielen);
1746
1747 /* MDE when using FILS+FT (already included in ie,ielen with RSNE) */
1748
1749 #ifdef CONFIG_IEEE80211R_AP
1750 if (wpa_key_mgmt_ft(wpa_auth_sta_key_mgmt(sta->wpa_sm))) {
1751 /* FTE[R1KH-ID,R0KH-ID] when using FILS+FT */
1752 int res;
1753 int use_sha384 = wpa_key_mgmt_sha384(
1754 wpa_auth_sta_key_mgmt(sta->wpa_sm));
1755
1756 res = wpa_auth_write_fte(hapd->wpa_auth, use_sha384,
1757 wpabuf_put(data, 0),
1758 wpabuf_tailroom(data));
1759 if (res < 0) {
1760 *resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1761 goto fail;
1762 }
1763 wpabuf_put(data, res);
1764 }
1765 #endif /* CONFIG_IEEE80211R_AP */
1766
1767 /* FILS Nonce */
1768 wpabuf_put_u8(data, WLAN_EID_EXTENSION); /* Element ID */
1769 wpabuf_put_u8(data, 1 + FILS_NONCE_LEN); /* Length */
1770 /* Element ID Extension */
1771 wpabuf_put_u8(data, WLAN_EID_EXT_FILS_NONCE);
1772 wpabuf_put_data(data, fils_nonce, FILS_NONCE_LEN);
1773
1774 /* FILS Session */
1775 wpabuf_put_u8(data, WLAN_EID_EXTENSION); /* Element ID */
1776 wpabuf_put_u8(data, 1 + FILS_SESSION_LEN); /* Length */
1777 /* Element ID Extension */
1778 wpabuf_put_u8(data, WLAN_EID_EXT_FILS_SESSION);
1779 wpabuf_put_data(data, sta->fils_session, FILS_SESSION_LEN);
1780
1781 /* FILS Wrapped Data */
1782 if (!pmksa && erp_resp) {
1783 wpabuf_put_u8(data, WLAN_EID_EXTENSION); /* Element ID */
1784 wpabuf_put_u8(data, 1 + wpabuf_len(erp_resp)); /* Length */
1785 /* Element ID Extension */
1786 wpabuf_put_u8(data, WLAN_EID_EXT_FILS_WRAPPED_DATA);
1787 wpabuf_put_buf(data, erp_resp);
1788
1789 if (fils_rmsk_to_pmk(wpa_auth_sta_key_mgmt(sta->wpa_sm),
1790 msk, msk_len, sta->fils_snonce, fils_nonce,
1791 sta->fils_dh_ss ?
1792 wpabuf_head(sta->fils_dh_ss) : NULL,
1793 sta->fils_dh_ss ?
1794 wpabuf_len(sta->fils_dh_ss) : 0,
1795 pmk_buf, &pmk_len)) {
1796 wpa_printf(MSG_DEBUG, "FILS: Failed to derive PMK");
1797 *resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1798 wpabuf_free(data);
1799 data = NULL;
1800 goto fail;
1801 }
1802 pmk = pmk_buf;
1803
1804 /* Don't use DHss in PTK derivation if PMKSA caching is not
1805 * used. */
1806 wpabuf_clear_free(sta->fils_dh_ss);
1807 sta->fils_dh_ss = NULL;
1808
1809 if (sta->fils_erp_pmkid_set) {
1810 /* TODO: get PMKLifetime from WPA parameters */
1811 unsigned int dot11RSNAConfigPMKLifetime = 43200;
1812 int session_timeout;
1813
1814 session_timeout = dot11RSNAConfigPMKLifetime;
1815 if (sta->session_timeout_set) {
1816 struct os_reltime now, diff;
1817
1818 os_get_reltime(&now);
1819 os_reltime_sub(&sta->session_timeout, &now,
1820 &diff);
1821 session_timeout = diff.sec;
1822 }
1823
1824 sta->fils_erp_pmkid_set = 0;
1825 wpa_auth_add_fils_pmk_pmkid(sta->wpa_sm, pmk, pmk_len,
1826 sta->fils_erp_pmkid);
1827 if (!hapd->conf->disable_pmksa_caching &&
1828 wpa_auth_pmksa_add2(
1829 hapd->wpa_auth, sta->addr,
1830 pmk, pmk_len,
1831 sta->fils_erp_pmkid,
1832 session_timeout,
1833 wpa_auth_sta_key_mgmt(sta->wpa_sm)) < 0) {
1834 wpa_printf(MSG_ERROR,
1835 "FILS: Failed to add PMKSA cache entry based on ERP");
1836 }
1837 }
1838 } else if (pmksa) {
1839 pmk = pmksa->pmk;
1840 pmk_len = pmksa->pmk_len;
1841 }
1842
1843 if (!pmk) {
1844 wpa_printf(MSG_DEBUG, "FILS: No PMK available");
1845 *resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1846 wpabuf_free(data);
1847 data = NULL;
1848 goto fail;
1849 }
1850
1851 if (fils_auth_pmk_to_ptk(sta->wpa_sm, pmk, pmk_len,
1852 sta->fils_snonce, fils_nonce,
1853 sta->fils_dh_ss ?
1854 wpabuf_head(sta->fils_dh_ss) : NULL,
1855 sta->fils_dh_ss ?
1856 wpabuf_len(sta->fils_dh_ss) : 0,
1857 sta->fils_g_sta, pub) < 0) {
1858 *resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1859 wpabuf_free(data);
1860 data = NULL;
1861 goto fail;
1862 }
1863
1864 fail:
1865 if (is_pub)
1866 *is_pub = pub != NULL;
1867 os_free(ie_buf);
1868 wpabuf_free(pub);
1869 wpabuf_clear_free(sta->fils_dh_ss);
1870 sta->fils_dh_ss = NULL;
1871 #ifdef CONFIG_FILS_SK_PFS
1872 crypto_ecdh_deinit(sta->fils_ecdh);
1873 sta->fils_ecdh = NULL;
1874 #endif /* CONFIG_FILS_SK_PFS */
1875 return data;
1876 }
1877
1878
1879 static void handle_auth_fils_finish(struct hostapd_data *hapd,
1880 struct sta_info *sta, u16 resp,
1881 struct wpabuf *data, int pub)
1882 {
1883 u16 auth_alg;
1884
1885 auth_alg = (pub ||
1886 resp == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED) ?
1887 WLAN_AUTH_FILS_SK_PFS : WLAN_AUTH_FILS_SK;
1888 send_auth_reply(hapd, sta->addr, hapd->own_addr, auth_alg, 2, resp,
1889 data ? wpabuf_head(data) : (u8 *) "",
1890 data ? wpabuf_len(data) : 0, "auth-fils-finish");
1891 wpabuf_free(data);
1892
1893 if (resp == WLAN_STATUS_SUCCESS) {
1894 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1895 HOSTAPD_LEVEL_DEBUG,
1896 "authentication OK (FILS)");
1897 sta->flags |= WLAN_STA_AUTH;
1898 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
1899 sta->auth_alg = pub ? WLAN_AUTH_FILS_SK_PFS : WLAN_AUTH_FILS_SK;
1900 mlme_authenticate_indication(hapd, sta);
1901 }
1902 }
1903
1904
1905 void ieee802_11_finish_fils_auth(struct hostapd_data *hapd,
1906 struct sta_info *sta, int success,
1907 struct wpabuf *erp_resp,
1908 const u8 *msk, size_t msk_len)
1909 {
1910 struct wpabuf *data;
1911 int pub = 0;
1912 u16 resp;
1913
1914 sta->flags &= ~WLAN_STA_PENDING_FILS_ERP;
1915
1916 if (!sta->fils_pending_cb)
1917 return;
1918 resp = success ? WLAN_STATUS_SUCCESS : WLAN_STATUS_UNSPECIFIED_FAILURE;
1919 data = prepare_auth_resp_fils(hapd, sta, &resp, NULL, erp_resp,
1920 msk, msk_len, &pub);
1921 if (!data) {
1922 wpa_printf(MSG_DEBUG,
1923 "%s: prepare_auth_resp_fils() returned failure",
1924 __func__);
1925 }
1926 sta->fils_pending_cb(hapd, sta, resp, data, pub);
1927 }
1928
1929 #endif /* CONFIG_FILS */
1930
1931
1932 int
1933 ieee802_11_allowed_address(struct hostapd_data *hapd, const u8 *addr,
1934 const u8 *msg, size_t len, u32 *session_timeout,
1935 u32 *acct_interim_interval,
1936 struct vlan_description *vlan_id,
1937 struct hostapd_sta_wpa_psk_short **psk,
1938 char **identity, char **radius_cui, int is_probe_req)
1939 {
1940 int res;
1941
1942 os_memset(vlan_id, 0, sizeof(*vlan_id));
1943 res = hostapd_allowed_address(hapd, addr, msg, len,
1944 session_timeout, acct_interim_interval,
1945 vlan_id, psk, identity, radius_cui,
1946 is_probe_req);
1947
1948 if (res == HOSTAPD_ACL_REJECT) {
1949 if (!is_probe_req)
1950 wpa_printf(MSG_DEBUG,
1951 "Station " MACSTR
1952 " not allowed to authenticate",
1953 MAC2STR(addr));
1954 return HOSTAPD_ACL_REJECT;
1955 }
1956
1957 if (res == HOSTAPD_ACL_PENDING) {
1958 wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR
1959 " waiting for an external authentication",
1960 MAC2STR(addr));
1961 /* Authentication code will re-send the authentication frame
1962 * after it has received (and cached) information from the
1963 * external source. */
1964 return HOSTAPD_ACL_PENDING;
1965 }
1966
1967 return res;
1968 }
1969
1970
1971 static int
1972 ieee802_11_set_radius_info(struct hostapd_data *hapd, struct sta_info *sta,
1973 int res, u32 session_timeout,
1974 u32 acct_interim_interval,
1975 struct vlan_description *vlan_id,
1976 struct hostapd_sta_wpa_psk_short **psk,
1977 char **identity, char **radius_cui)
1978 {
1979 if (vlan_id->notempty &&
1980 !hostapd_vlan_valid(hapd->conf->vlan, vlan_id)) {
1981 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
1982 HOSTAPD_LEVEL_INFO,
1983 "Invalid VLAN %d%s received from RADIUS server",
1984 vlan_id->untagged,
1985 vlan_id->tagged[0] ? "+" : "");
1986 return -1;
1987 }
1988 if (ap_sta_set_vlan(hapd, sta, vlan_id) < 0)
1989 return -1;
1990 if (sta->vlan_id)
1991 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
1992 HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id);
1993
1994 hostapd_free_psk_list(sta->psk);
1995 if (hapd->conf->wpa_psk_radius != PSK_RADIUS_IGNORED) {
1996 sta->psk = *psk;
1997 *psk = NULL;
1998 } else {
1999 sta->psk = NULL;
2000 }
2001
2002 os_free(sta->identity);
2003 sta->identity = *identity;
2004 *identity = NULL;
2005
2006 os_free(sta->radius_cui);
2007 sta->radius_cui = *radius_cui;
2008 *radius_cui = NULL;
2009
2010 if (hapd->conf->acct_interim_interval == 0 && acct_interim_interval)
2011 sta->acct_interim_interval = acct_interim_interval;
2012 if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT) {
2013 sta->session_timeout_set = 1;
2014 os_get_reltime(&sta->session_timeout);
2015 sta->session_timeout.sec += session_timeout;
2016 ap_sta_session_timeout(hapd, sta, session_timeout);
2017 } else {
2018 sta->session_timeout_set = 0;
2019 ap_sta_no_session_timeout(hapd, sta);
2020 }
2021
2022 return 0;
2023 }
2024
2025
2026 static void handle_auth(struct hostapd_data *hapd,
2027 const struct ieee80211_mgmt *mgmt, size_t len,
2028 int rssi, int from_queue)
2029 {
2030 u16 auth_alg, auth_transaction, status_code;
2031 u16 resp = WLAN_STATUS_SUCCESS;
2032 struct sta_info *sta = NULL;
2033 int res, reply_res;
2034 u16 fc;
2035 const u8 *challenge = NULL;
2036 u32 session_timeout, acct_interim_interval;
2037 struct vlan_description vlan_id;
2038 struct hostapd_sta_wpa_psk_short *psk = NULL;
2039 u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN];
2040 size_t resp_ies_len = 0;
2041 char *identity = NULL;
2042 char *radius_cui = NULL;
2043 u16 seq_ctrl;
2044
2045 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
2046 wpa_printf(MSG_INFO, "handle_auth - too short payload (len=%lu)",
2047 (unsigned long) len);
2048 return;
2049 }
2050
2051 #ifdef CONFIG_TESTING_OPTIONS
2052 if (hapd->iconf->ignore_auth_probability > 0.0 &&
2053 drand48() < hapd->iconf->ignore_auth_probability) {
2054 wpa_printf(MSG_INFO,
2055 "TESTING: ignoring auth frame from " MACSTR,
2056 MAC2STR(mgmt->sa));
2057 return;
2058 }
2059 #endif /* CONFIG_TESTING_OPTIONS */
2060
2061 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
2062 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
2063 status_code = le_to_host16(mgmt->u.auth.status_code);
2064 fc = le_to_host16(mgmt->frame_control);
2065 seq_ctrl = le_to_host16(mgmt->seq_ctrl);
2066
2067 if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) +
2068 2 + WLAN_AUTH_CHALLENGE_LEN &&
2069 mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE &&
2070 mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN)
2071 challenge = &mgmt->u.auth.variable[2];
2072
2073 wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d "
2074 "auth_transaction=%d status_code=%d wep=%d%s "
2075 "seq_ctrl=0x%x%s%s",
2076 MAC2STR(mgmt->sa), auth_alg, auth_transaction,
2077 status_code, !!(fc & WLAN_FC_ISWEP),
2078 challenge ? " challenge" : "",
2079 seq_ctrl, (fc & WLAN_FC_RETRY) ? " retry" : "",
2080 from_queue ? " (from queue)" : "");
2081
2082 #ifdef CONFIG_NO_RC4
2083 if (auth_alg == WLAN_AUTH_SHARED_KEY) {
2084 wpa_printf(MSG_INFO,
2085 "Unsupported authentication algorithm (%d)",
2086 auth_alg);
2087 resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
2088 goto fail;
2089 }
2090 #endif /* CONFIG_NO_RC4 */
2091
2092 if (hapd->tkip_countermeasures) {
2093 wpa_printf(MSG_DEBUG,
2094 "Ongoing TKIP countermeasures (Michael MIC failure) - reject authentication");
2095 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
2096 goto fail;
2097 }
2098
2099 if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) &&
2100 auth_alg == WLAN_AUTH_OPEN) ||
2101 #ifdef CONFIG_IEEE80211R_AP
2102 (hapd->conf->wpa && wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt) &&
2103 auth_alg == WLAN_AUTH_FT) ||
2104 #endif /* CONFIG_IEEE80211R_AP */
2105 #ifdef CONFIG_SAE
2106 (hapd->conf->wpa && wpa_key_mgmt_sae(hapd->conf->wpa_key_mgmt) &&
2107 auth_alg == WLAN_AUTH_SAE) ||
2108 #endif /* CONFIG_SAE */
2109 #ifdef CONFIG_FILS
2110 (hapd->conf->wpa && wpa_key_mgmt_fils(hapd->conf->wpa_key_mgmt) &&
2111 auth_alg == WLAN_AUTH_FILS_SK) ||
2112 (hapd->conf->wpa && wpa_key_mgmt_fils(hapd->conf->wpa_key_mgmt) &&
2113 hapd->conf->fils_dh_group &&
2114 auth_alg == WLAN_AUTH_FILS_SK_PFS) ||
2115 #endif /* CONFIG_FILS */
2116 ((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) &&
2117 auth_alg == WLAN_AUTH_SHARED_KEY))) {
2118 wpa_printf(MSG_INFO, "Unsupported authentication algorithm (%d)",
2119 auth_alg);
2120 resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
2121 goto fail;
2122 }
2123
2124 if (!(auth_transaction == 1 || auth_alg == WLAN_AUTH_SAE ||
2125 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) {
2126 wpa_printf(MSG_INFO, "Unknown authentication transaction number (%d)",
2127 auth_transaction);
2128 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
2129 goto fail;
2130 }
2131
2132 if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) {
2133 wpa_printf(MSG_INFO, "Station " MACSTR " not allowed to authenticate",
2134 MAC2STR(mgmt->sa));
2135 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
2136 goto fail;
2137 }
2138
2139 if (hapd->conf->no_auth_if_seen_on) {
2140 struct hostapd_data *other;
2141
2142 other = sta_track_seen_on(hapd->iface, mgmt->sa,
2143 hapd->conf->no_auth_if_seen_on);
2144 if (other) {
2145 u8 *pos;
2146 u32 info;
2147 u8 op_class, channel, phytype;
2148
2149 wpa_printf(MSG_DEBUG, "%s: Reject authentication from "
2150 MACSTR " since STA has been seen on %s",
2151 hapd->conf->iface, MAC2STR(mgmt->sa),
2152 hapd->conf->no_auth_if_seen_on);
2153
2154 resp = WLAN_STATUS_REJECTED_WITH_SUGGESTED_BSS_TRANSITION;
2155 pos = &resp_ies[0];
2156 *pos++ = WLAN_EID_NEIGHBOR_REPORT;
2157 *pos++ = 13;
2158 os_memcpy(pos, other->own_addr, ETH_ALEN);
2159 pos += ETH_ALEN;
2160 info = 0; /* TODO: BSSID Information */
2161 WPA_PUT_LE32(pos, info);
2162 pos += 4;
2163 if (other->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD)
2164 phytype = 8; /* dmg */
2165 else if (other->iconf->ieee80211ac)
2166 phytype = 9; /* vht */
2167 else if (other->iconf->ieee80211n)
2168 phytype = 7; /* ht */
2169 else if (other->iconf->hw_mode ==
2170 HOSTAPD_MODE_IEEE80211A)
2171 phytype = 4; /* ofdm */
2172 else if (other->iconf->hw_mode ==
2173 HOSTAPD_MODE_IEEE80211G)
2174 phytype = 6; /* erp */
2175 else
2176 phytype = 5; /* hrdsss */
2177 if (ieee80211_freq_to_channel_ext(
2178 hostapd_hw_get_freq(other,
2179 other->iconf->channel),
2180 other->iconf->secondary_channel,
2181 other->iconf->ieee80211ac,
2182 &op_class, &channel) == NUM_HOSTAPD_MODES) {
2183 op_class = 0;
2184 channel = other->iconf->channel;
2185 }
2186 *pos++ = op_class;
2187 *pos++ = channel;
2188 *pos++ = phytype;
2189 resp_ies_len = pos - &resp_ies[0];
2190 goto fail;
2191 }
2192 }
2193
2194 res = ieee802_11_allowed_address(
2195 hapd, mgmt->sa, (const u8 *) mgmt, len, &session_timeout,
2196 &acct_interim_interval, &vlan_id, &psk, &identity, &radius_cui,
2197 0);
2198 if (res == HOSTAPD_ACL_REJECT) {
2199 wpa_msg(hapd->msg_ctx, MSG_DEBUG,
2200 "Ignore Authentication frame from " MACSTR
2201 " due to ACL reject", MAC2STR(mgmt->sa));
2202 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
2203 goto fail;
2204 }
2205 if (res == HOSTAPD_ACL_PENDING)
2206 return;
2207
2208 #ifdef CONFIG_SAE
2209 if (auth_alg == WLAN_AUTH_SAE && !from_queue &&
2210 (auth_transaction == 1 ||
2211 (auth_transaction == 2 && auth_sae_queued_addr(hapd, mgmt->sa)))) {
2212 /* Handle SAE Authentication commit message through a queue to
2213 * provide more control for postponing the needed heavy
2214 * processing under a possible DoS attack scenario. In addition,
2215 * queue SAE Authentication confirm message if there happens to
2216 * be a queued commit message from the same peer. This is needed
2217 * to avoid reordering Authentication frames within the same
2218 * SAE exchange. */
2219 auth_sae_queue(hapd, mgmt, len, rssi);
2220 return;
2221 }
2222 #endif /* CONFIG_SAE */
2223
2224 sta = ap_get_sta(hapd, mgmt->sa);
2225 if (sta) {
2226 sta->flags &= ~WLAN_STA_PENDING_FILS_ERP;
2227 sta->ft_over_ds = 0;
2228 if ((fc & WLAN_FC_RETRY) &&
2229 sta->last_seq_ctrl != WLAN_INVALID_MGMT_SEQ &&
2230 sta->last_seq_ctrl == seq_ctrl &&
2231 sta->last_subtype == WLAN_FC_STYPE_AUTH) {
2232 hostapd_logger(hapd, sta->addr,
2233 HOSTAPD_MODULE_IEEE80211,
2234 HOSTAPD_LEVEL_DEBUG,
2235 "Drop repeated authentication frame seq_ctrl=0x%x",
2236 seq_ctrl);
2237 return;
2238 }
2239 #ifdef CONFIG_MESH
2240 if ((hapd->conf->mesh & MESH_ENABLED) &&
2241 sta->plink_state == PLINK_BLOCKED) {
2242 wpa_printf(MSG_DEBUG, "Mesh peer " MACSTR
2243 " is blocked - drop Authentication frame",
2244 MAC2STR(mgmt->sa));
2245 return;
2246 }
2247 #endif /* CONFIG_MESH */
2248 } else {
2249 #ifdef CONFIG_MESH
2250 if (hapd->conf->mesh & MESH_ENABLED) {
2251 /* if the mesh peer is not available, we don't do auth.
2252 */
2253 wpa_printf(MSG_DEBUG, "Mesh peer " MACSTR
2254 " not yet known - drop Authentication frame",
2255 MAC2STR(mgmt->sa));
2256 /*
2257 * Save a copy of the frame so that it can be processed
2258 * if a new peer entry is added shortly after this.
2259 */
2260 wpabuf_free(hapd->mesh_pending_auth);
2261 hapd->mesh_pending_auth = wpabuf_alloc_copy(mgmt, len);
2262 os_get_reltime(&hapd->mesh_pending_auth_time);
2263 return;
2264 }
2265 #endif /* CONFIG_MESH */
2266
2267 sta = ap_sta_add(hapd, mgmt->sa);
2268 if (!sta) {
2269 wpa_printf(MSG_DEBUG, "ap_sta_add() failed");
2270 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
2271 goto fail;
2272 }
2273 }
2274 sta->last_seq_ctrl = seq_ctrl;
2275 sta->last_subtype = WLAN_FC_STYPE_AUTH;
2276 #ifdef CONFIG_MBO
2277 sta->auth_rssi = rssi;
2278 #endif /* CONFIG_MBO */
2279
2280 res = ieee802_11_set_radius_info(
2281 hapd, sta, res, session_timeout, acct_interim_interval,
2282 &vlan_id, &psk, &identity, &radius_cui);
2283 if (res) {
2284 wpa_printf(MSG_DEBUG, "ieee802_11_set_radius_info() failed");
2285 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
2286 goto fail;
2287 }
2288
2289 sta->flags &= ~WLAN_STA_PREAUTH;
2290 ieee802_1x_notify_pre_auth(sta->eapol_sm, 0);
2291
2292 /*
2293 * If the driver supports full AP client state, add a station to the
2294 * driver before sending authentication reply to make sure the driver
2295 * has resources, and not to go through the entire authentication and
2296 * association handshake, and fail it at the end.
2297 *
2298 * If this is not the first transaction, in a multi-step authentication
2299 * algorithm, the station already exists in the driver
2300 * (sta->added_unassoc = 1) so skip it.
2301 *
2302 * In mesh mode, the station was already added to the driver when the
2303 * NEW_PEER_CANDIDATE event is received.
2304 *
2305 * If PMF was negotiated for the existing association, skip this to
2306 * avoid dropping the STA entry and the associated keys. This is needed
2307 * to allow the original connection work until the attempt can complete
2308 * (re)association, so that unprotected Authentication frame cannot be
2309 * used to bypass PMF protection.
2310 */
2311 if (FULL_AP_CLIENT_STATE_SUPP(hapd->iface->drv_flags) &&
2312 (!(sta->flags & WLAN_STA_MFP) || !ap_sta_is_authorized(sta)) &&
2313 !(hapd->conf->mesh & MESH_ENABLED) &&
2314 !(sta->added_unassoc)) {
2315 /*
2316 * If a station that is already associated to the AP, is trying
2317 * to authenticate again, remove the STA entry, in order to make
2318 * sure the STA PS state gets cleared and configuration gets
2319 * updated. To handle this, station's added_unassoc flag is
2320 * cleared once the station has completed association.
2321 */
2322 ap_sta_set_authorized(hapd, sta, 0);
2323 hostapd_drv_sta_remove(hapd, sta->addr);
2324 sta->flags &= ~(WLAN_STA_ASSOC | WLAN_STA_AUTH |
2325 WLAN_STA_AUTHORIZED);
2326
2327 if (hostapd_sta_add(hapd, sta->addr, 0, 0, NULL, 0, 0,
2328 NULL, NULL, sta->flags, 0, 0, 0, 0)) {
2329 hostapd_logger(hapd, sta->addr,
2330 HOSTAPD_MODULE_IEEE80211,
2331 HOSTAPD_LEVEL_NOTICE,
2332 "Could not add STA to kernel driver");
2333 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
2334 goto fail;
2335 }
2336
2337 sta->added_unassoc = 1;
2338 }
2339
2340 switch (auth_alg) {
2341 case WLAN_AUTH_OPEN:
2342 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
2343 HOSTAPD_LEVEL_DEBUG,
2344 "authentication OK (open system)");
2345 sta->flags |= WLAN_STA_AUTH;
2346 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
2347 sta->auth_alg = WLAN_AUTH_OPEN;
2348 mlme_authenticate_indication(hapd, sta);
2349 break;
2350 #ifndef CONFIG_NO_RC4
2351 case WLAN_AUTH_SHARED_KEY:
2352 resp = auth_shared_key(hapd, sta, auth_transaction, challenge,
2353 fc & WLAN_FC_ISWEP);
2354 if (resp != 0)
2355 wpa_printf(MSG_DEBUG,
2356 "auth_shared_key() failed: status=%d", resp);
2357 sta->auth_alg = WLAN_AUTH_SHARED_KEY;
2358 mlme_authenticate_indication(hapd, sta);
2359 if (sta->challenge && auth_transaction == 1) {
2360 resp_ies[0] = WLAN_EID_CHALLENGE;
2361 resp_ies[1] = WLAN_AUTH_CHALLENGE_LEN;
2362 os_memcpy(resp_ies + 2, sta->challenge,
2363 WLAN_AUTH_CHALLENGE_LEN);
2364 resp_ies_len = 2 + WLAN_AUTH_CHALLENGE_LEN;
2365 }
2366 break;
2367 #endif /* CONFIG_NO_RC4 */
2368 #ifdef CONFIG_IEEE80211R_AP
2369 case WLAN_AUTH_FT:
2370 sta->auth_alg = WLAN_AUTH_FT;
2371 if (sta->wpa_sm == NULL)
2372 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
2373 sta->addr, NULL);
2374 if (sta->wpa_sm == NULL) {
2375 wpa_printf(MSG_DEBUG, "FT: Failed to initialize WPA "
2376 "state machine");
2377 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
2378 goto fail;
2379 }
2380 wpa_ft_process_auth(sta->wpa_sm, mgmt->bssid,
2381 auth_transaction, mgmt->u.auth.variable,
2382 len - IEEE80211_HDRLEN -
2383 sizeof(mgmt->u.auth),
2384 handle_auth_ft_finish, hapd);
2385 /* handle_auth_ft_finish() callback will complete auth. */
2386 return;
2387 #endif /* CONFIG_IEEE80211R_AP */
2388 #ifdef CONFIG_SAE
2389 case WLAN_AUTH_SAE:
2390 #ifdef CONFIG_MESH
2391 if (status_code == WLAN_STATUS_SUCCESS &&
2392 hapd->conf->mesh & MESH_ENABLED) {
2393 if (sta->wpa_sm == NULL)
2394 sta->wpa_sm =
2395 wpa_auth_sta_init(hapd->wpa_auth,
2396 sta->addr, NULL);
2397 if (sta->wpa_sm == NULL) {
2398 wpa_printf(MSG_DEBUG,
2399 "SAE: Failed to initialize WPA state machine");
2400 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
2401 goto fail;
2402 }
2403 }
2404 #endif /* CONFIG_MESH */
2405 handle_auth_sae(hapd, sta, mgmt, len, auth_transaction,
2406 status_code);
2407 return;
2408 #endif /* CONFIG_SAE */
2409 #ifdef CONFIG_FILS
2410 case WLAN_AUTH_FILS_SK:
2411 case WLAN_AUTH_FILS_SK_PFS:
2412 handle_auth_fils(hapd, sta, mgmt->u.auth.variable,
2413 len - IEEE80211_HDRLEN - sizeof(mgmt->u.auth),
2414 auth_alg, auth_transaction, status_code,
2415 handle_auth_fils_finish);
2416 return;
2417 #endif /* CONFIG_FILS */
2418 }
2419
2420 fail:
2421 os_free(identity);
2422 os_free(radius_cui);
2423 hostapd_free_psk_list(psk);
2424
2425 reply_res = send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg,
2426 auth_transaction + 1, resp, resp_ies,
2427 resp_ies_len, "handle-auth");
2428
2429 if (sta && sta->added_unassoc && (resp != WLAN_STATUS_SUCCESS ||
2430 reply_res != WLAN_STATUS_SUCCESS)) {
2431 hostapd_drv_sta_remove(hapd, sta->addr);
2432 sta->added_unassoc = 0;
2433 }
2434 }
2435
2436
2437 int hostapd_get_aid(struct hostapd_data *hapd, struct sta_info *sta)
2438 {
2439 int i, j = 32, aid;
2440
2441 /* get a unique AID */
2442 if (sta->aid > 0) {
2443 wpa_printf(MSG_DEBUG, " old AID %d", sta->aid);
2444 return 0;
2445 }
2446
2447 if (TEST_FAIL())
2448 return -1;
2449
2450 for (i = 0; i < AID_WORDS; i++) {
2451 if (hapd->sta_aid[i] == (u32) -1)
2452 continue;
2453 for (j = 0; j < 32; j++) {
2454 if (!(hapd->sta_aid[i] & BIT(j)))
2455 break;
2456 }
2457 if (j < 32)
2458 break;
2459 }
2460 if (j == 32)
2461 return -1;
2462 aid = i * 32 + j + 1;
2463 if (aid > 2007)
2464 return -1;
2465
2466 sta->aid = aid;
2467 hapd->sta_aid[i] |= BIT(j);
2468 wpa_printf(MSG_DEBUG, " new AID %d", sta->aid);
2469 return 0;
2470 }
2471
2472
2473 static u16 check_ssid(struct hostapd_data *hapd, struct sta_info *sta,
2474 const u8 *ssid_ie, size_t ssid_ie_len)
2475 {
2476 if (ssid_ie == NULL)
2477 return WLAN_STATUS_UNSPECIFIED_FAILURE;
2478
2479 if (ssid_ie_len != hapd->conf->ssid.ssid_len ||
2480 os_memcmp(ssid_ie, hapd->conf->ssid.ssid, ssid_ie_len) != 0) {
2481 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
2482 HOSTAPD_LEVEL_INFO,
2483 "Station tried to associate with unknown SSID "
2484 "'%s'", wpa_ssid_txt(ssid_ie, ssid_ie_len));
2485 return WLAN_STATUS_UNSPECIFIED_FAILURE;
2486 }
2487
2488 return WLAN_STATUS_SUCCESS;
2489 }
2490
2491
2492 static u16 check_wmm(struct hostapd_data *hapd, struct sta_info *sta,
2493 const u8 *wmm_ie, size_t wmm_ie_len)
2494 {
2495 sta->flags &= ~WLAN_STA_WMM;
2496 sta->qosinfo = 0;
2497 if (wmm_ie && hapd->conf->wmm_enabled) {
2498 struct wmm_information_element *wmm;
2499
2500 if (!hostapd_eid_wmm_valid(hapd, wmm_ie, wmm_ie_len)) {
2501 hostapd_logger(hapd, sta->addr,
2502 HOSTAPD_MODULE_WPA,
2503 HOSTAPD_LEVEL_DEBUG,
2504 "invalid WMM element in association "
2505 "request");
2506 return WLAN_STATUS_UNSPECIFIED_FAILURE;
2507 }
2508
2509 sta->flags |= WLAN_STA_WMM;
2510 wmm = (struct wmm_information_element *) wmm_ie;
2511 sta->qosinfo = wmm->qos_info;
2512 }
2513 return WLAN_STATUS_SUCCESS;
2514 }
2515
2516 static u16 check_multi_ap(struct hostapd_data *hapd, struct sta_info *sta,
2517 const u8 *multi_ap_ie, size_t multi_ap_len)
2518 {
2519 u8 multi_ap_value = 0;
2520
2521 sta->flags &= ~WLAN_STA_MULTI_AP;
2522
2523 if (!hapd->conf->multi_ap)
2524 return WLAN_STATUS_SUCCESS;
2525
2526 if (multi_ap_ie) {
2527 const u8 *multi_ap_subelem;
2528
2529 multi_ap_subelem = get_ie(multi_ap_ie + 4,
2530 multi_ap_len - 4,
2531 MULTI_AP_SUB_ELEM_TYPE);
2532 if (multi_ap_subelem && multi_ap_subelem[1] == 1) {
2533 multi_ap_value = multi_ap_subelem[2];
2534 } else {
2535 hostapd_logger(hapd, sta->addr,
2536 HOSTAPD_MODULE_IEEE80211,
2537 HOSTAPD_LEVEL_INFO,
2538 "Multi-AP IE has missing or invalid Multi-AP subelement");
2539 return WLAN_STATUS_INVALID_IE;
2540 }
2541 }
2542
2543 if (multi_ap_value && multi_ap_value != MULTI_AP_BACKHAUL_STA)
2544 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
2545 HOSTAPD_LEVEL_INFO,
2546 "Multi-AP IE with unexpected value 0x%02x",
2547 multi_ap_value);
2548
2549 if (!(multi_ap_value & MULTI_AP_BACKHAUL_STA)) {
2550 if (hapd->conf->multi_ap & FRONTHAUL_BSS)
2551 return WLAN_STATUS_SUCCESS;
2552
2553 hostapd_logger(hapd, sta->addr,
2554 HOSTAPD_MODULE_IEEE80211,
2555 HOSTAPD_LEVEL_INFO,
2556 "Non-Multi-AP STA tries to associate with backhaul-only BSS");
2557 return WLAN_STATUS_ASSOC_DENIED_UNSPEC;
2558 }
2559
2560 if (!(hapd->conf->multi_ap & BACKHAUL_BSS))
2561 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
2562 HOSTAPD_LEVEL_DEBUG,
2563 "Backhaul STA tries to associate with fronthaul-only BSS");
2564
2565 sta->flags |= WLAN_STA_MULTI_AP;
2566 return WLAN_STATUS_SUCCESS;
2567 }
2568
2569
2570 static u16 copy_supp_rates(struct hostapd_data *hapd, struct sta_info *sta,
2571 struct ieee802_11_elems *elems)
2572 {
2573 /* Supported rates not used in IEEE 802.11ad/DMG */
2574 if (hapd->iface->current_mode &&
2575 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211AD)
2576 return WLAN_STATUS_SUCCESS;
2577
2578 if (!elems->supp_rates) {
2579 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
2580 HOSTAPD_LEVEL_DEBUG,
2581 "No supported rates element in AssocReq");
2582 return WLAN_STATUS_UNSPECIFIED_FAILURE;
2583 }
2584
2585 if (elems->supp_rates_len + elems->ext_supp_rates_len >
2586 sizeof(sta->supported_rates)) {
2587 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
2588 HOSTAPD_LEVEL_DEBUG,
2589 "Invalid supported rates element length %d+%d",
2590 elems->supp_rates_len,
2591 elems->ext_supp_rates_len);
2592 return WLAN_STATUS_UNSPECIFIED_FAILURE;
2593 }
2594
2595 sta->supported_rates_len = merge_byte_arrays(
2596 sta->supported_rates, sizeof(sta->supported_rates),
2597 elems->supp_rates, elems->supp_rates_len,
2598 elems->ext_supp_rates, elems->ext_supp_rates_len);
2599
2600 return WLAN_STATUS_SUCCESS;
2601 }
2602
2603
2604 static u16 check_ext_capab(struct hostapd_data *hapd, struct sta_info *sta,
2605 const u8 *ext_capab_ie, size_t ext_capab_ie_len)
2606 {
2607 #ifdef CONFIG_INTERWORKING
2608 /* check for QoS Map support */
2609 if (ext_capab_ie_len >= 5) {
2610 if (ext_capab_ie[4] & 0x01)
2611 sta->qos_map_enabled = 1;
2612 }
2613 #endif /* CONFIG_INTERWORKING */
2614
2615 if (ext_capab_ie_len > 0) {
2616 sta->ecsa_supported = !!(ext_capab_ie[0] & BIT(2));
2617 os_free(sta->ext_capability);
2618 sta->ext_capability = os_malloc(1 + ext_capab_ie_len);
2619 if (sta->ext_capability) {
2620 sta->ext_capability[0] = ext_capab_ie_len;
2621 os_memcpy(sta->ext_capability + 1, ext_capab_ie,
2622 ext_capab_ie_len);
2623 }
2624 }
2625
2626 return WLAN_STATUS_SUCCESS;
2627 }
2628
2629
2630 #ifdef CONFIG_OWE
2631
2632 static int owe_group_supported(struct hostapd_data *hapd, u16 group)
2633 {
2634 int i;
2635 int *groups = hapd->conf->owe_groups;
2636
2637 if (group != 19 && group != 20 && group != 21)
2638 return 0;
2639
2640 if (!groups)
2641 return 1;
2642
2643 for (i = 0; groups[i] > 0; i++) {
2644 if (groups[i] == group)
2645 return 1;
2646 }
2647
2648 return 0;
2649 }
2650
2651
2652 static u16 owe_process_assoc_req(struct hostapd_data *hapd,
2653 struct sta_info *sta, const u8 *owe_dh,
2654 u8 owe_dh_len)
2655 {
2656 struct wpabuf *secret, *pub, *hkey;
2657 int res;
2658 u8 prk[SHA512_MAC_LEN], pmkid[SHA512_MAC_LEN];
2659 const char *info = "OWE Key Generation";
2660 const u8 *addr[2];
2661 size_t len[2];
2662 u16 group;
2663 size_t hash_len, prime_len;
2664
2665 if (wpa_auth_sta_get_pmksa(sta->wpa_sm)) {
2666 wpa_printf(MSG_DEBUG, "OWE: Using PMKSA caching");
2667 return WLAN_STATUS_SUCCESS;
2668 }
2669
2670 group = WPA_GET_LE16(owe_dh);
2671 if (!owe_group_supported(hapd, group)) {
2672 wpa_printf(MSG_DEBUG, "OWE: Unsupported DH group %u", group);
2673 return WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED;
2674 }
2675 if (group == 19)
2676 prime_len = 32;
2677 else if (group == 20)
2678 prime_len = 48;
2679 else if (group == 21)
2680 prime_len = 66;
2681 else
2682 return WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED;
2683
2684 crypto_ecdh_deinit(sta->owe_ecdh);
2685 sta->owe_ecdh = crypto_ecdh_init(group);
2686 if (!sta->owe_ecdh)
2687 return WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED;
2688 sta->owe_group = group;
2689
2690 secret = crypto_ecdh_set_peerkey(sta->owe_ecdh, 0, owe_dh + 2,
2691 owe_dh_len - 2);
2692 secret = wpabuf_zeropad(secret, prime_len);
2693 if (!secret) {
2694 wpa_printf(MSG_DEBUG, "OWE: Invalid peer DH public key");
2695 return WLAN_STATUS_UNSPECIFIED_FAILURE;
2696 }
2697 wpa_hexdump_buf_key(MSG_DEBUG, "OWE: DH shared secret", secret);
2698
2699 /* prk = HKDF-extract(C | A | group, z) */
2700
2701 pub = crypto_ecdh_get_pubkey(sta->owe_ecdh, 0);
2702 if (!pub) {
2703 wpabuf_clear_free(secret);
2704 return WLAN_STATUS_UNSPECIFIED_FAILURE;
2705 }
2706
2707 /* PMKID = Truncate-128(Hash(C | A)) */
2708 addr[0] = owe_dh + 2;
2709 len[0] = owe_dh_len - 2;
2710 addr[1] = wpabuf_head(pub);
2711 len[1] = wpabuf_len(pub);
2712 if (group == 19) {
2713 res = sha256_vector(2, addr, len, pmkid);
2714 hash_len = SHA256_MAC_LEN;
2715 } else if (group == 20) {
2716 res = sha384_vector(2, addr, len, pmkid);
2717 hash_len = SHA384_MAC_LEN;
2718 } else if (group == 21) {
2719 res = sha512_vector(2, addr, len, pmkid);
2720 hash_len = SHA512_MAC_LEN;
2721 } else {
2722 wpabuf_free(pub);
2723 wpabuf_clear_free(secret);
2724 return WLAN_STATUS_UNSPECIFIED_FAILURE;
2725 }
2726 pub = wpabuf_zeropad(pub, prime_len);
2727 if (res < 0 || !pub) {
2728 wpabuf_free(pub);
2729 wpabuf_clear_free(secret);
2730 return WLAN_STATUS_UNSPECIFIED_FAILURE;
2731 }
2732
2733 hkey = wpabuf_alloc(owe_dh_len - 2 + wpabuf_len(pub) + 2);
2734 if (!hkey) {
2735 wpabuf_free(pub);
2736 wpabuf_clear_free(secret);
2737 return WLAN_STATUS_UNSPECIFIED_FAILURE;
2738 }
2739
2740 wpabuf_put_data(hkey, owe_dh + 2, owe_dh_len - 2); /* C */
2741 wpabuf_put_buf(hkey, pub); /* A */
2742 wpabuf_free(pub);
2743 wpabuf_put_le16(hkey, group); /* group */
2744 if (group == 19)
2745 res = hmac_sha256(wpabuf_head(hkey), wpabuf_len(hkey),
2746 wpabuf_head(secret), wpabuf_len(secret), prk);
2747 else if (group == 20)
2748 res = hmac_sha384(wpabuf_head(hkey), wpabuf_len(hkey),
2749 wpabuf_head(secret), wpabuf_len(secret), prk);
2750 else if (group == 21)
2751 res = hmac_sha512(wpabuf_head(hkey), wpabuf_len(hkey),
2752 wpabuf_head(secret), wpabuf_len(secret), prk);
2753 wpabuf_clear_free(hkey);
2754 wpabuf_clear_free(secret);
2755 if (res < 0)
2756 return WLAN_STATUS_UNSPECIFIED_FAILURE;
2757
2758 wpa_hexdump_key(MSG_DEBUG, "OWE: prk", prk, hash_len);
2759
2760 /* PMK = HKDF-expand(prk, "OWE Key Generation", n) */
2761
2762 os_free(sta->owe_pmk);
2763 sta->owe_pmk = os_malloc(hash_len);
2764 if (!sta->owe_pmk) {
2765 os_memset(prk, 0, SHA512_MAC_LEN);
2766 return WLAN_STATUS_UNSPECIFIED_FAILURE;
2767 }
2768
2769 if (group == 19)
2770 res = hmac_sha256_kdf(prk, hash_len, NULL, (const u8 *) info,
2771 os_strlen(info), sta->owe_pmk, hash_len);
2772 else if (group == 20)
2773 res = hmac_sha384_kdf(prk, hash_len, NULL, (const u8 *) info,
2774 os_strlen(info), sta->owe_pmk, hash_len);
2775 else if (group == 21)
2776 res = hmac_sha512_kdf(prk, hash_len, NULL, (const u8 *) info,
2777 os_strlen(info), sta->owe_pmk, hash_len);
2778 os_memset(prk, 0, SHA512_MAC_LEN);
2779 if (res < 0) {
2780 os_free(sta->owe_pmk);
2781 sta->owe_pmk = NULL;
2782 return WLAN_STATUS_UNSPECIFIED_FAILURE;
2783 }
2784 sta->owe_pmk_len = hash_len;
2785
2786 wpa_hexdump_key(MSG_DEBUG, "OWE: PMK", sta->owe_pmk, sta->owe_pmk_len);
2787 wpa_hexdump(MSG_DEBUG, "OWE: PMKID", pmkid, PMKID_LEN);
2788 wpa_auth_pmksa_add2(hapd->wpa_auth, sta->addr, sta->owe_pmk,
2789 sta->owe_pmk_len, pmkid, 0, WPA_KEY_MGMT_OWE);
2790
2791 return WLAN_STATUS_SUCCESS;
2792 }
2793
2794 #endif /* CONFIG_OWE */
2795
2796
2797 static u16 check_assoc_ies(struct hostapd_data *hapd, struct sta_info *sta,
2798 const u8 *ies, size_t ies_len, int reassoc)
2799 {
2800 struct ieee802_11_elems elems;
2801 u16 resp;
2802 const u8 *wpa_ie;
2803 size_t wpa_ie_len;
2804 const u8 *p2p_dev_addr = NULL;
2805
2806 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) {
2807 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
2808 HOSTAPD_LEVEL_INFO, "Station sent an invalid "
2809 "association request");
2810 return WLAN_STATUS_UNSPECIFIED_FAILURE;
2811 }
2812
2813 resp = check_ssid(hapd, sta, elems.ssid, elems.ssid_len);
2814 if (resp != WLAN_STATUS_SUCCESS)
2815 return resp;
2816 resp = check_wmm(hapd, sta, elems.wmm, elems.wmm_len);
2817 if (resp != WLAN_STATUS_SUCCESS)
2818 return resp;
2819 resp = check_ext_capab(hapd, sta, elems.ext_capab, elems.ext_capab_len);
2820 if (resp != WLAN_STATUS_SUCCESS)
2821 return resp;
2822 resp = copy_supp_rates(hapd, sta, &elems);
2823 if (resp != WLAN_STATUS_SUCCESS)
2824 return resp;
2825
2826 resp = check_multi_ap(hapd, sta, elems.multi_ap, elems.multi_ap_len);
2827 if (resp != WLAN_STATUS_SUCCESS)
2828 return resp;
2829
2830 #ifdef CONFIG_IEEE80211N
2831 resp = copy_sta_ht_capab(hapd, sta, elems.ht_capabilities);
2832 if (resp != WLAN_STATUS_SUCCESS)
2833 return resp;
2834 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht &&
2835 !(sta->flags & WLAN_STA_HT)) {
2836 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
2837 HOSTAPD_LEVEL_INFO, "Station does not support "
2838 "mandatory HT PHY - reject association");
2839 return WLAN_STATUS_ASSOC_DENIED_NO_HT;
2840 }
2841 #endif /* CONFIG_IEEE80211N */
2842
2843 #ifdef CONFIG_IEEE80211AC
2844 if (hapd->iconf->ieee80211ac) {
2845 resp = copy_sta_vht_capab(hapd, sta, elems.vht_capabilities);
2846 if (resp != WLAN_STATUS_SUCCESS)
2847 return resp;
2848
2849 resp = set_sta_vht_opmode(hapd, sta, elems.vht_opmode_notif);
2850 if (resp != WLAN_STATUS_SUCCESS)
2851 return resp;
2852 }
2853
2854 if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht &&
2855 !(sta->flags & WLAN_STA_VHT)) {
2856 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
2857 HOSTAPD_LEVEL_INFO, "Station does not support "
2858 "mandatory VHT PHY - reject association");
2859 return WLAN_STATUS_ASSOC_DENIED_NO_VHT;
2860 }
2861
2862 if (hapd->conf->vendor_vht && !elems.vht_capabilities) {
2863 resp = copy_sta_vendor_vht(hapd, sta, elems.vendor_vht,
2864 elems.vendor_vht_len);
2865 if (resp != WLAN_STATUS_SUCCESS)
2866 return resp;
2867 }
2868 #endif /* CONFIG_IEEE80211AC */
2869
2870 #ifdef CONFIG_P2P
2871 if (elems.p2p) {
2872 wpabuf_free(sta->p2p_ie);
2873 sta->p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2874 P2P_IE_VENDOR_TYPE);
2875 if (sta->p2p_ie)
2876 p2p_dev_addr = p2p_get_go_dev_addr(sta->p2p_ie);
2877 } else {
2878 wpabuf_free(sta->p2p_ie);
2879 sta->p2p_ie = NULL;
2880 }
2881 #endif /* CONFIG_P2P */
2882
2883 if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) {
2884 wpa_ie = elems.rsn_ie;
2885 wpa_ie_len = elems.rsn_ie_len;
2886 } else if ((hapd->conf->wpa & WPA_PROTO_WPA) &&
2887 elems.wpa_ie) {
2888 wpa_ie = elems.wpa_ie;
2889 wpa_ie_len = elems.wpa_ie_len;
2890 } else {
2891 wpa_ie = NULL;
2892 wpa_ie_len = 0;
2893 }
2894
2895 #ifdef CONFIG_WPS
2896 sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS | WLAN_STA_WPS2);
2897 if (hapd->conf->wps_state && elems.wps_ie) {
2898 wpa_printf(MSG_DEBUG, "STA included WPS IE in (Re)Association "
2899 "Request - assume WPS is used");
2900 sta->flags |= WLAN_STA_WPS;
2901 wpabuf_free(sta->wps_ie);
2902 sta->wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2903 WPS_IE_VENDOR_TYPE);
2904 if (sta->wps_ie && wps_is_20(sta->wps_ie)) {
2905 wpa_printf(MSG_DEBUG, "WPS: STA supports WPS 2.0");
2906 sta->flags |= WLAN_STA_WPS2;
2907 }
2908 wpa_ie = NULL;
2909 wpa_ie_len = 0;
2910 if (sta->wps_ie && wps_validate_assoc_req(sta->wps_ie) < 0) {
2911 wpa_printf(MSG_DEBUG, "WPS: Invalid WPS IE in "
2912 "(Re)Association Request - reject");
2913 return WLAN_STATUS_INVALID_IE;
2914 }
2915 } else if (hapd->conf->wps_state && wpa_ie == NULL) {
2916 wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE in "
2917 "(Re)Association Request - possible WPS use");
2918 sta->flags |= WLAN_STA_MAYBE_WPS;
2919 } else
2920 #endif /* CONFIG_WPS */
2921 if (hapd->conf->wpa && wpa_ie == NULL) {
2922 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
2923 HOSTAPD_LEVEL_INFO,
2924 "No WPA/RSN IE in association request");
2925 return WLAN_STATUS_INVALID_IE;
2926 }
2927
2928 if (hapd->conf->wpa && wpa_ie) {
2929 int res;
2930 wpa_ie -= 2;
2931 wpa_ie_len += 2;
2932 if (sta->wpa_sm == NULL)
2933 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
2934 sta->addr,
2935 p2p_dev_addr);
2936 if (sta->wpa_sm == NULL) {
2937 wpa_printf(MSG_WARNING, "Failed to initialize WPA "
2938 "state machine");
2939 return WLAN_STATUS_UNSPECIFIED_FAILURE;
2940 }
2941 wpa_auth_set_auth_alg(sta->wpa_sm, sta->auth_alg);
2942 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
2943 hapd->iface->freq,
2944 wpa_ie, wpa_ie_len,
2945 elems.mdie, elems.mdie_len,
2946 elems.owe_dh, elems.owe_dh_len);
2947 resp = wpa_res_to_status_code(res);
2948 if (resp != WLAN_STATUS_SUCCESS)
2949 return resp;
2950 #ifdef CONFIG_IEEE80211W
2951 if ((sta->flags & (WLAN_STA_ASSOC | WLAN_STA_MFP)) ==
2952 (WLAN_STA_ASSOC | WLAN_STA_MFP) &&
2953 !sta->sa_query_timed_out &&
2954 sta->sa_query_count > 0)
2955 ap_check_sa_query_timeout(hapd, sta);
2956 if ((sta->flags & (WLAN_STA_ASSOC | WLAN_STA_MFP)) ==
2957 (WLAN_STA_ASSOC | WLAN_STA_MFP) &&
2958 !sta->sa_query_timed_out &&
2959 (!reassoc || sta->auth_alg != WLAN_AUTH_FT)) {
2960 /*
2961 * STA has already been associated with MFP and SA
2962 * Query timeout has not been reached. Reject the
2963 * association attempt temporarily and start SA Query,
2964 * if one is not pending.
2965 */
2966
2967 if (sta->sa_query_count == 0)
2968 ap_sta_start_sa_query(hapd, sta);
2969
2970 return WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;
2971 }
2972
2973 if (wpa_auth_uses_mfp(sta->wpa_sm))
2974 sta->flags |= WLAN_STA_MFP;
2975 else
2976 sta->flags &= ~WLAN_STA_MFP;
2977 #endif /* CONFIG_IEEE80211W */
2978
2979 #ifdef CONFIG_IEEE80211R_AP
2980 if (sta->auth_alg == WLAN_AUTH_FT) {
2981 if (!reassoc) {
2982 wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried "
2983 "to use association (not "
2984 "re-association) with FT auth_alg",
2985 MAC2STR(sta->addr));
2986 return WLAN_STATUS_UNSPECIFIED_FAILURE;
2987 }
2988
2989 resp = wpa_ft_validate_reassoc(sta->wpa_sm, ies,
2990 ies_len);
2991 if (resp != WLAN_STATUS_SUCCESS)
2992 return resp;
2993 }
2994 #endif /* CONFIG_IEEE80211R_AP */
2995
2996 #ifdef CONFIG_SAE
2997 if (wpa_auth_uses_sae(sta->wpa_sm) && sta->sae &&
2998 sta->sae->state == SAE_ACCEPTED)
2999 wpa_auth_add_sae_pmkid(sta->wpa_sm, sta->sae->pmkid);
3000
3001 if (wpa_auth_uses_sae(sta->wpa_sm) &&
3002 sta->auth_alg == WLAN_AUTH_OPEN) {
3003 struct rsn_pmksa_cache_entry *sa;
3004 sa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
3005 if (!sa || sa->akmp != WPA_KEY_MGMT_SAE) {
3006 wpa_printf(MSG_DEBUG,
3007 "SAE: No PMKSA cache entry found for "
3008 MACSTR, MAC2STR(sta->addr));
3009 return WLAN_STATUS_INVALID_PMKID;
3010 }
3011 wpa_printf(MSG_DEBUG, "SAE: " MACSTR
3012 " using PMKSA caching", MAC2STR(sta->addr));
3013 } else if (wpa_auth_uses_sae(sta->wpa_sm) &&
3014 sta->auth_alg != WLAN_AUTH_SAE &&
3015 !(sta->auth_alg == WLAN_AUTH_FT &&
3016 wpa_auth_uses_ft_sae(sta->wpa_sm))) {
3017 wpa_printf(MSG_DEBUG, "SAE: " MACSTR " tried to use "
3018 "SAE AKM after non-SAE auth_alg %u",
3019 MAC2STR(sta->addr), sta->auth_alg);
3020 return WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
3021 }
3022 #endif /* CONFIG_SAE */
3023
3024 #ifdef CONFIG_OWE
3025 if ((hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_OWE) &&
3026 wpa_auth_sta_key_mgmt(sta->wpa_sm) == WPA_KEY_MGMT_OWE &&
3027 elems.owe_dh) {
3028 resp = owe_process_assoc_req(hapd, sta, elems.owe_dh,
3029 elems.owe_dh_len);
3030 if (resp != WLAN_STATUS_SUCCESS)
3031 return resp;
3032 }
3033 #endif /* CONFIG_OWE */
3034
3035 #ifdef CONFIG_DPP2
3036 dpp_pfs_free(sta->dpp_pfs);
3037 sta->dpp_pfs = NULL;
3038
3039 if ((hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_DPP) &&
3040 hapd->conf->dpp_netaccesskey && sta->wpa_sm &&
3041 wpa_auth_sta_key_mgmt(sta->wpa_sm) == WPA_KEY_MGMT_DPP &&
3042 elems.owe_dh) {
3043 sta->dpp_pfs = dpp_pfs_init(
3044 wpabuf_head(hapd->conf->dpp_netaccesskey),
3045 wpabuf_len(hapd->conf->dpp_netaccesskey));
3046 if (!sta->dpp_pfs) {
3047 wpa_printf(MSG_DEBUG,
3048 "DPP: Could not initialize PFS");
3049 /* Try to continue without PFS */
3050 goto pfs_fail;
3051 }
3052
3053 if (dpp_pfs_process(sta->dpp_pfs, elems.owe_dh,
3054 elems.owe_dh_len) < 0) {
3055 dpp_pfs_free(sta->dpp_pfs);
3056 sta->dpp_pfs = NULL;
3057 return WLAN_STATUS_UNSPECIFIED_FAILURE;
3058 }
3059 }
3060
3061 wpa_auth_set_dpp_z(sta->wpa_sm, sta->dpp_pfs ?
3062 sta->dpp_pfs->secret : NULL);
3063 pfs_fail:
3064 #endif /* CONFIG_DPP2 */
3065
3066 #ifdef CONFIG_IEEE80211N
3067 if ((sta->flags & (WLAN_STA_HT | WLAN_STA_VHT)) &&
3068 wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) {
3069 hostapd_logger(hapd, sta->addr,
3070 HOSTAPD_MODULE_IEEE80211,
3071 HOSTAPD_LEVEL_INFO,
3072 "Station tried to use TKIP with HT "
3073 "association");
3074 return WLAN_STATUS_CIPHER_REJECTED_PER_POLICY;
3075 }
3076 #endif /* CONFIG_IEEE80211N */
3077 #ifdef CONFIG_HS20
3078 } else if (hapd->conf->osen) {
3079 if (elems.osen == NULL) {
3080 hostapd_logger(
3081 hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
3082 HOSTAPD_LEVEL_INFO,
3083 "No HS 2.0 OSEN element in association request");
3084 return WLAN_STATUS_INVALID_IE;
3085 }
3086
3087 wpa_printf(MSG_DEBUG, "HS 2.0: OSEN association");
3088 if (sta->wpa_sm == NULL)
3089 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
3090 sta->addr, NULL);
3091 if (sta->wpa_sm == NULL) {
3092 wpa_printf(MSG_WARNING, "Failed to initialize WPA "
3093 "state machine");
3094 return WLAN_STATUS_UNSPECIFIED_FAILURE;
3095 }
3096 if (wpa_validate_osen(hapd->wpa_auth, sta->wpa_sm,
3097 elems.osen - 2, elems.osen_len + 2) < 0)
3098 return WLAN_STATUS_INVALID_IE;
3099 #endif /* CONFIG_HS20 */
3100 } else
3101 wpa_auth_sta_no_wpa(sta->wpa_sm);
3102
3103 #ifdef CONFIG_P2P
3104 p2p_group_notif_assoc(hapd->p2p_group, sta->addr, ies, ies_len);
3105 #endif /* CONFIG_P2P */
3106
3107 #ifdef CONFIG_HS20
3108 wpabuf_free(sta->hs20_ie);
3109 if (elems.hs20 && elems.hs20_len > 4) {
3110 int release;
3111
3112 sta->hs20_ie = wpabuf_alloc_copy(elems.hs20 + 4,
3113 elems.hs20_len - 4);
3114 release = ((elems.hs20[4] >> 4) & 0x0f) + 1;
3115 if (release >= 2 && !wpa_auth_uses_mfp(sta->wpa_sm)) {
3116 wpa_printf(MSG_DEBUG,
3117 "HS 2.0: PMF not negotiated by release %d station "
3118 MACSTR, release, MAC2STR(sta->addr));
3119 return WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
3120 }
3121 } else {
3122 sta->hs20_ie = NULL;
3123 }
3124
3125 wpabuf_free(sta->roaming_consortium);
3126 if (elems.roaming_cons_sel)
3127 sta->roaming_consortium = wpabuf_alloc_copy(
3128 elems.roaming_cons_sel + 4,
3129 elems.roaming_cons_sel_len - 4);
3130 else
3131 sta->roaming_consortium = NULL;
3132 #endif /* CONFIG_HS20 */
3133
3134 #ifdef CONFIG_FST
3135 wpabuf_free(sta->mb_ies);
3136 if (hapd->iface->fst)
3137 sta->mb_ies = mb_ies_by_info(&elems.mb_ies);
3138 else
3139 sta->mb_ies = NULL;
3140 #endif /* CONFIG_FST */
3141
3142 #ifdef CONFIG_MBO
3143 mbo_ap_check_sta_assoc(hapd, sta, &elems);
3144
3145 if (hapd->conf->mbo_enabled && (hapd->conf->wpa & 2) &&
3146 elems.mbo && sta->cell_capa && !(sta->flags & WLAN_STA_MFP) &&
3147 hapd->conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
3148 wpa_printf(MSG_INFO,
3149 "MBO: Reject WPA2 association without PMF");
3150 return WLAN_STATUS_UNSPECIFIED_FAILURE;
3151 }
3152 #endif /* CONFIG_MBO */
3153
3154 #if defined(CONFIG_FILS) && defined(CONFIG_OCV)
3155 if (wpa_auth_uses_ocv(sta->wpa_sm) &&
3156 (sta->auth_alg == WLAN_AUTH_FILS_SK ||
3157 sta->auth_alg == WLAN_AUTH_FILS_SK_PFS ||
3158 sta->auth_alg == WLAN_AUTH_FILS_PK)) {
3159 struct wpa_channel_info ci;
3160 int tx_chanwidth;
3161 int tx_seg1_idx;
3162
3163 if (hostapd_drv_channel_info(hapd, &ci) != 0) {
3164 wpa_printf(MSG_WARNING,
3165 "Failed to get channel info to validate received OCI in FILS (Re)Association Request frame");
3166 return WLAN_STATUS_UNSPECIFIED_FAILURE;
3167 }
3168
3169 if (get_sta_tx_parameters(sta->wpa_sm,
3170 channel_width_to_int(ci.chanwidth),
3171 ci.seg1_idx, &tx_chanwidth,
3172 &tx_seg1_idx) < 0)
3173 return WLAN_STATUS_UNSPECIFIED_FAILURE;
3174
3175 if (ocv_verify_tx_params(elems.oci, elems.oci_len, &ci,
3176 tx_chanwidth, tx_seg1_idx) != 0) {
3177 wpa_printf(MSG_WARNING, "FILS: %s", ocv_errorstr);
3178 return WLAN_STATUS_UNSPECIFIED_FAILURE;
3179 }
3180 }
3181 #endif /* CONFIG_FILS && CONFIG_OCV */
3182
3183 ap_copy_sta_supp_op_classes(sta, elems.supp_op_classes,
3184 elems.supp_op_classes_len);
3185
3186 if ((sta->capability & WLAN_CAPABILITY_RADIO_MEASUREMENT) &&
3187 elems.rrm_enabled &&
3188 elems.rrm_enabled_len >= sizeof(sta->rrm_enabled_capa))
3189 os_memcpy(sta->rrm_enabled_capa, elems.rrm_enabled,
3190 sizeof(sta->rrm_enabled_capa));
3191
3192 if (elems.power_capab) {
3193 sta->min_tx_power = elems.power_capab[0];
3194 sta->max_tx_power = elems.power_capab[1];
3195 sta->power_capab = 1;
3196 } else {
3197 sta->power_capab = 0;
3198 }
3199
3200 return WLAN_STATUS_SUCCESS;
3201 }
3202
3203
3204 static void send_deauth(struct hostapd_data *hapd, const u8 *addr,
3205 u16 reason_code)
3206 {
3207 int send_len;
3208 struct ieee80211_mgmt reply;
3209
3210 os_memset(&reply, 0, sizeof(reply));
3211 reply.frame_control =
3212 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_DEAUTH);
3213 os_memcpy(reply.da, addr, ETH_ALEN);
3214 os_memcpy(reply.sa, hapd->own_addr, ETH_ALEN);
3215 os_memcpy(reply.bssid, hapd->own_addr, ETH_ALEN);
3216
3217 send_len = IEEE80211_HDRLEN + sizeof(reply.u.deauth);
3218 reply.u.deauth.reason_code = host_to_le16(reason_code);
3219
3220 if (hostapd_drv_send_mlme(hapd, &reply, send_len, 0) < 0)
3221 wpa_printf(MSG_INFO, "Failed to send deauth: %s",
3222 strerror(errno));
3223 }
3224
3225
3226 static int add_associated_sta(struct hostapd_data *hapd,
3227 struct sta_info *sta, int reassoc)
3228 {
3229 struct ieee80211_ht_capabilities ht_cap;
3230 struct ieee80211_vht_capabilities vht_cap;
3231 int set = 1;
3232
3233 /*
3234 * Remove the STA entry to ensure the STA PS state gets cleared and
3235 * configuration gets updated. This is relevant for cases, such as
3236 * FT-over-the-DS, where a station re-associates back to the same AP but
3237 * skips the authentication flow, or if working with a driver that
3238 * does not support full AP client state.
3239 *
3240 * Skip this if the STA has already completed FT reassociation and the
3241 * TK has been configured since the TX/RX PN must not be reset to 0 for
3242 * the same key.
3243 *
3244 * FT-over-the-DS has a special case where the STA entry (and as such,
3245 * the TK) has not yet been configured to the driver depending on which
3246 * driver interface is used. For that case, allow add-STA operation to
3247 * be used (instead of set-STA). This is needed to allow mac80211-based
3248 * drivers to accept the STA parameter configuration. Since this is
3249 * after a new FT-over-DS exchange, a new TK has been derived, so key
3250 * reinstallation is not a concern for this case.
3251 */
3252 wpa_printf(MSG_DEBUG, "Add associated STA " MACSTR
3253 " (added_unassoc=%d auth_alg=%u ft_over_ds=%u reassoc=%d authorized=%d ft_tk=%d fils_tk=%d)",
3254 MAC2STR(sta->addr), sta->added_unassoc, sta->auth_alg,
3255 sta->ft_over_ds, reassoc,
3256 !!(sta->flags & WLAN_STA_AUTHORIZED),
3257 wpa_auth_sta_ft_tk_already_set(sta->wpa_sm),
3258 wpa_auth_sta_fils_tk_already_set(sta->wpa_sm));
3259
3260 if (!sta->added_unassoc &&
3261 (!(sta->flags & WLAN_STA_AUTHORIZED) ||
3262 (reassoc && sta->ft_over_ds && sta->auth_alg == WLAN_AUTH_FT) ||
3263 (!wpa_auth_sta_ft_tk_already_set(sta->wpa_sm) &&
3264 !wpa_auth_sta_fils_tk_already_set(sta->wpa_sm)))) {
3265 hostapd_drv_sta_remove(hapd, sta->addr);
3266 wpa_auth_sm_event(sta->wpa_sm, WPA_DRV_STA_REMOVED);
3267 set = 0;
3268
3269 /* Do not allow the FT-over-DS exception to be used more than
3270 * once per authentication exchange to guarantee a new TK is
3271 * used here */
3272 sta->ft_over_ds = 0;
3273 }
3274
3275 #ifdef CONFIG_IEEE80211N
3276 if (sta->flags & WLAN_STA_HT)
3277 hostapd_get_ht_capab(hapd, sta->ht_capabilities, &ht_cap);
3278 #endif /* CONFIG_IEEE80211N */
3279 #ifdef CONFIG_IEEE80211AC
3280 if (sta->flags & WLAN_STA_VHT)
3281 hostapd_get_vht_capab(hapd, sta->vht_capabilities, &vht_cap);
3282 #endif /* CONFIG_IEEE80211AC */
3283
3284 /*
3285 * Add the station with forced WLAN_STA_ASSOC flag. The sta->flags
3286 * will be set when the ACK frame for the (Re)Association Response frame
3287 * is processed (TX status driver event).
3288 */
3289 if (hostapd_sta_add(hapd, sta->addr, sta->aid, sta->capability,
3290 sta->supported_rates, sta->supported_rates_len,
3291 sta->listen_interval,
3292 sta->flags & WLAN_STA_HT ? &ht_cap : NULL,
3293 sta->flags & WLAN_STA_VHT ? &vht_cap : NULL,
3294 sta->flags | WLAN_STA_ASSOC, sta->qosinfo,
3295 sta->vht_opmode, sta->p2p_ie ? 1 : 0,
3296 set)) {
3297 hostapd_logger(hapd, sta->addr,
3298 HOSTAPD_MODULE_IEEE80211, HOSTAPD_LEVEL_NOTICE,
3299 "Could not %s STA to kernel driver",
3300 set ? "set" : "add");
3301
3302 if (sta->added_unassoc) {
3303 hostapd_drv_sta_remove(hapd, sta->addr);
3304 sta->added_unassoc = 0;
3305 }
3306
3307 return -1;
3308 }
3309
3310 sta->added_unassoc = 0;
3311
3312 return 0;
3313 }
3314
3315
3316 static u16 send_assoc_resp(struct hostapd_data *hapd, struct sta_info *sta,
3317 const u8 *addr, u16 status_code, int reassoc,
3318 const u8 *ies, size_t ies_len, int rssi)
3319 {
3320 int send_len;
3321 u8 *buf;
3322 size_t buflen;
3323 struct ieee80211_mgmt *reply;
3324 u8 *p;
3325 u16 res = WLAN_STATUS_SUCCESS;
3326
3327 buflen = sizeof(struct ieee80211_mgmt) + 1024;
3328 #ifdef CONFIG_FILS
3329 if (sta && sta->fils_hlp_resp)
3330 buflen += wpabuf_len(sta->fils_hlp_resp);
3331 if (sta)
3332 buflen += 150;
3333 #endif /* CONFIG_FILS */
3334 #ifdef CONFIG_OWE
3335 if (sta && (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_OWE))
3336 buflen += 150;
3337 #endif /* CONFIG_OWE */
3338 #ifdef CONFIG_DPP2
3339 if (sta && sta->dpp_pfs)
3340 buflen += 5 + sta->dpp_pfs->curve->prime_len;
3341 #endif /* CONFIG_DPP2 */
3342 buf = os_zalloc(buflen);
3343 if (!buf) {
3344 res = WLAN_STATUS_UNSPECIFIED_FAILURE;
3345 goto done;
3346 }
3347 reply = (struct ieee80211_mgmt *) buf;
3348 reply->frame_control =
3349 IEEE80211_FC(WLAN_FC_TYPE_MGMT,
3350 (reassoc ? WLAN_FC_STYPE_REASSOC_RESP :
3351 WLAN_FC_STYPE_ASSOC_RESP));
3352 os_memcpy(reply->da, addr, ETH_ALEN);
3353 os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
3354 os_memcpy(reply->bssid, hapd->own_addr, ETH_ALEN);
3355
3356 send_len = IEEE80211_HDRLEN;
3357 send_len += sizeof(reply->u.assoc_resp);
3358 reply->u.assoc_resp.capab_info =
3359 host_to_le16(hostapd_own_capab_info(hapd));
3360 reply->u.assoc_resp.status_code = host_to_le16(status_code);
3361
3362 reply->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0) |
3363 BIT(14) | BIT(15));
3364 /* Supported rates */
3365 p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable);
3366 /* Extended supported rates */
3367 p = hostapd_eid_ext_supp_rates(hapd, p);
3368
3369 #ifdef CONFIG_MBO
3370 if (status_code == WLAN_STATUS_DENIED_POOR_CHANNEL_CONDITIONS &&
3371 rssi != 0) {
3372 int delta = hapd->iconf->rssi_reject_assoc_rssi - rssi;
3373
3374 p = hostapd_eid_mbo_rssi_assoc_rej(hapd, p, buf + buflen - p,
3375 delta);
3376 }
3377 #endif /* CONFIG_MBO */
3378
3379 #ifdef CONFIG_IEEE80211R_AP
3380 if (sta && status_code == WLAN_STATUS_SUCCESS) {
3381 /* IEEE 802.11r: Mobility Domain Information, Fast BSS
3382 * Transition Information, RSN, [RIC Response] */
3383 p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p,
3384 buf + buflen - p,
3385 sta->auth_alg, ies, ies_len);
3386 if (!p) {
3387 wpa_printf(MSG_DEBUG,
3388 "FT: Failed to write AssocResp IEs");
3389 res = WLAN_STATUS_UNSPECIFIED_FAILURE;
3390 goto done;
3391 }
3392 }
3393 #endif /* CONFIG_IEEE80211R_AP */
3394 #ifdef CONFIG_FILS
3395 if (sta && status_code == WLAN_STATUS_SUCCESS &&
3396 (sta->auth_alg == WLAN_AUTH_FILS_SK ||
3397 sta->auth_alg == WLAN_AUTH_FILS_SK_PFS ||
3398 sta->auth_alg == WLAN_AUTH_FILS_PK))
3399 p = wpa_auth_write_assoc_resp_fils(sta->wpa_sm, p,
3400 buf + buflen - p,
3401 ies, ies_len);
3402 #endif /* CONFIG_FILS */
3403
3404 #ifdef CONFIG_OWE
3405 if (sta && status_code == WLAN_STATUS_SUCCESS &&
3406 (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_OWE))
3407 p = wpa_auth_write_assoc_resp_owe(sta->wpa_sm, p,
3408 buf + buflen - p,
3409 ies, ies_len);
3410 #endif /* CONFIG_OWE */
3411
3412 #ifdef CONFIG_IEEE80211W
3413 if (sta && status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY)
3414 p = hostapd_eid_assoc_comeback_time(hapd, sta, p);
3415 #endif /* CONFIG_IEEE80211W */
3416
3417 #ifdef CONFIG_IEEE80211N
3418 p = hostapd_eid_ht_capabilities(hapd, p);
3419 p = hostapd_eid_ht_operation(hapd, p);
3420 #endif /* CONFIG_IEEE80211N */
3421
3422 #ifdef CONFIG_IEEE80211AC
3423 if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) {
3424 u32 nsts = 0, sta_nsts;
3425
3426 if (sta && hapd->conf->use_sta_nsts && sta->vht_capabilities) {
3427 struct ieee80211_vht_capabilities *capa;
3428
3429 nsts = (hapd->iface->conf->vht_capab >>
3430 VHT_CAP_BEAMFORMEE_STS_OFFSET) & 7;
3431 capa = sta->vht_capabilities;
3432 sta_nsts = (le_to_host32(capa->vht_capabilities_info) >>
3433 VHT_CAP_BEAMFORMEE_STS_OFFSET) & 7;
3434
3435 if (nsts < sta_nsts)
3436 nsts = 0;
3437 else
3438 nsts = sta_nsts;
3439 }
3440 p = hostapd_eid_vht_capabilities(hapd, p, nsts);
3441 p = hostapd_eid_vht_operation(hapd, p);
3442 }
3443 #endif /* CONFIG_IEEE80211AC */
3444
3445 p = hostapd_eid_ext_capab(hapd, p);
3446 p = hostapd_eid_bss_max_idle_period(hapd, p);
3447 if (sta && sta->qos_map_enabled)
3448 p = hostapd_eid_qos_map_set(hapd, p);
3449
3450 #ifdef CONFIG_FST
3451 if (hapd->iface->fst_ies) {
3452 os_memcpy(p, wpabuf_head(hapd->iface->fst_ies),
3453 wpabuf_len(hapd->iface->fst_ies));
3454 p += wpabuf_len(hapd->iface->fst_ies);
3455 }
3456 #endif /* CONFIG_FST */
3457
3458 #ifdef CONFIG_OWE
3459 if ((hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_OWE) &&
3460 sta && sta->owe_ecdh && status_code == WLAN_STATUS_SUCCESS &&
3461 wpa_auth_sta_key_mgmt(sta->wpa_sm) == WPA_KEY_MGMT_OWE) {
3462 struct wpabuf *pub;
3463
3464 pub = crypto_ecdh_get_pubkey(sta->owe_ecdh, 0);
3465 if (!pub) {
3466 res = WLAN_STATUS_UNSPECIFIED_FAILURE;
3467 goto done;
3468 }
3469 /* OWE Diffie-Hellman Parameter element */
3470 *p++ = WLAN_EID_EXTENSION; /* Element ID */
3471 *p++ = 1 + 2 + wpabuf_len(pub); /* Length */
3472 *p++ = WLAN_EID_EXT_OWE_DH_PARAM; /* Element ID Extension */
3473 WPA_PUT_LE16(p, sta->owe_group);
3474 p += 2;
3475 os_memcpy(p, wpabuf_head(pub), wpabuf_len(pub));
3476 p += wpabuf_len(pub);
3477 wpabuf_free(pub);
3478 }
3479 #endif /* CONFIG_OWE */
3480
3481 #ifdef CONFIG_DPP2
3482 if ((hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_DPP) &&
3483 sta && sta->dpp_pfs && status_code == WLAN_STATUS_SUCCESS &&
3484 wpa_auth_sta_key_mgmt(sta->wpa_sm) == WPA_KEY_MGMT_DPP) {
3485 os_memcpy(p, wpabuf_head(sta->dpp_pfs->ie),
3486 wpabuf_len(sta->dpp_pfs->ie));
3487 p += wpabuf_len(sta->dpp_pfs->ie);
3488 }
3489 #endif /* CONFIG_DPP2 */
3490
3491 #ifdef CONFIG_IEEE80211AC
3492 if (sta && hapd->conf->vendor_vht && (sta->flags & WLAN_STA_VENDOR_VHT))
3493 p = hostapd_eid_vendor_vht(hapd, p);
3494 #endif /* CONFIG_IEEE80211AC */
3495
3496 if (sta && (sta->flags & WLAN_STA_WMM))
3497 p = hostapd_eid_wmm(hapd, p);
3498
3499 #ifdef CONFIG_WPS
3500 if (sta &&
3501 ((sta->flags & WLAN_STA_WPS) ||
3502 ((sta->flags & WLAN_STA_MAYBE_WPS) && hapd->conf->wpa))) {
3503 struct wpabuf *wps = wps_build_assoc_resp_ie();
3504 if (wps) {
3505 os_memcpy(p, wpabuf_head(wps), wpabuf_len(wps));
3506 p += wpabuf_len(wps);
3507 wpabuf_free(wps);
3508 }
3509 }
3510 #endif /* CONFIG_WPS */
3511
3512 if (sta && (sta->flags & WLAN_STA_MULTI_AP))
3513 p = hostapd_eid_multi_ap(hapd, p);
3514
3515 #ifdef CONFIG_P2P
3516 if (sta && sta->p2p_ie && hapd->p2p_group) {
3517 struct wpabuf *p2p_resp_ie;
3518 enum p2p_status_code status;
3519 switch (status_code) {
3520 case WLAN_STATUS_SUCCESS:
3521 status = P2P_SC_SUCCESS;
3522 break;
3523 case WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA:
3524 status = P2P_SC_FAIL_LIMIT_REACHED;
3525 break;
3526 default:
3527 status = P2P_SC_FAIL_INVALID_PARAMS;
3528 break;
3529 }
3530 p2p_resp_ie = p2p_group_assoc_resp_ie(hapd->p2p_group, status);
3531 if (p2p_resp_ie) {
3532 os_memcpy(p, wpabuf_head(p2p_resp_ie),
3533 wpabuf_len(p2p_resp_ie));
3534 p += wpabuf_len(p2p_resp_ie);
3535 wpabuf_free(p2p_resp_ie);
3536 }
3537 }
3538 #endif /* CONFIG_P2P */
3539
3540 #ifdef CONFIG_P2P_MANAGER
3541 if (hapd->conf->p2p & P2P_MANAGE)
3542 p = hostapd_eid_p2p_manage(hapd, p);
3543 #endif /* CONFIG_P2P_MANAGER */
3544
3545 p = hostapd_eid_mbo(hapd, p, buf + buflen - p);
3546
3547 if (hapd->conf->assocresp_elements &&
3548 (size_t) (buf + buflen - p) >=
3549 wpabuf_len(hapd->conf->assocresp_elements)) {
3550 os_memcpy(p, wpabuf_head(hapd->conf->assocresp_elements),
3551 wpabuf_len(hapd->conf->assocresp_elements));
3552 p += wpabuf_len(hapd->conf->assocresp_elements);
3553 }
3554
3555 send_len += p - reply->u.assoc_resp.variable;
3556
3557 #ifdef CONFIG_FILS
3558 if (sta &&
3559 (sta->auth_alg == WLAN_AUTH_FILS_SK ||
3560 sta->auth_alg == WLAN_AUTH_FILS_SK_PFS ||
3561 sta->auth_alg == WLAN_AUTH_FILS_PK) &&
3562 status_code == WLAN_STATUS_SUCCESS) {
3563 struct ieee802_11_elems elems;
3564
3565 if (ieee802_11_parse_elems(ies, ies_len, &elems, 0) ==
3566 ParseFailed || !elems.fils_session) {
3567 res = WLAN_STATUS_UNSPECIFIED_FAILURE;
3568 goto done;
3569 }
3570
3571 /* FILS Session */
3572 *p++ = WLAN_EID_EXTENSION; /* Element ID */
3573 *p++ = 1 + FILS_SESSION_LEN; /* Length */
3574 *p++ = WLAN_EID_EXT_FILS_SESSION; /* Element ID Extension */
3575 os_memcpy(p, elems.fils_session, FILS_SESSION_LEN);
3576 send_len += 2 + 1 + FILS_SESSION_LEN;
3577
3578 send_len = fils_encrypt_assoc(sta->wpa_sm, buf, send_len,
3579 buflen, sta->fils_hlp_resp);
3580 if (send_len < 0) {
3581 res = WLAN_STATUS_UNSPECIFIED_FAILURE;
3582 goto done;
3583 }
3584 }
3585 #endif /* CONFIG_FILS */
3586
3587 if (hostapd_drv_send_mlme(hapd, reply, send_len, 0) < 0) {
3588 wpa_printf(MSG_INFO, "Failed to send assoc resp: %s",
3589 strerror(errno));
3590 res = WLAN_STATUS_UNSPECIFIED_FAILURE;
3591 }
3592
3593 done:
3594 os_free(buf);
3595 return res;
3596 }
3597
3598
3599 #ifdef CONFIG_OWE
3600 u8 * owe_assoc_req_process(struct hostapd_data *hapd, struct sta_info *sta,
3601 const u8 *owe_dh, u8 owe_dh_len,
3602 u8 *owe_buf, size_t owe_buf_len, u16 *reason)
3603 {
3604 #ifdef CONFIG_TESTING_OPTIONS
3605 if (hapd->conf->own_ie_override) {
3606 wpa_printf(MSG_DEBUG, "OWE: Using IE override");
3607 *reason = WLAN_STATUS_SUCCESS;
3608 return wpa_auth_write_assoc_resp_owe(sta->wpa_sm, owe_buf,
3609 owe_buf_len, NULL, 0);
3610 }
3611 #endif /* CONFIG_TESTING_OPTIONS */
3612
3613 if (wpa_auth_sta_get_pmksa(sta->wpa_sm)) {
3614 wpa_printf(MSG_DEBUG, "OWE: Using PMKSA caching");
3615 owe_buf = wpa_auth_write_assoc_resp_owe(sta->wpa_sm, owe_buf,
3616 owe_buf_len, NULL, 0);
3617 *reason = WLAN_STATUS_SUCCESS;
3618 return owe_buf;
3619 }
3620
3621 *reason = owe_process_assoc_req(hapd, sta, owe_dh, owe_dh_len);
3622 if (*reason != WLAN_STATUS_SUCCESS)
3623 return NULL;
3624
3625 owe_buf = wpa_auth_write_assoc_resp_owe(sta->wpa_sm, owe_buf,
3626 owe_buf_len, NULL, 0);
3627
3628 if (sta->owe_ecdh && owe_buf) {
3629 struct wpabuf *pub;
3630
3631 pub = crypto_ecdh_get_pubkey(sta->owe_ecdh, 0);
3632 if (!pub) {
3633 *reason = WLAN_STATUS_UNSPECIFIED_FAILURE;
3634 return owe_buf;
3635 }
3636
3637 /* OWE Diffie-Hellman Parameter element */
3638 *owe_buf++ = WLAN_EID_EXTENSION; /* Element ID */
3639 *owe_buf++ = 1 + 2 + wpabuf_len(pub); /* Length */
3640 *owe_buf++ = WLAN_EID_EXT_OWE_DH_PARAM; /* Element ID Extension
3641 */
3642 WPA_PUT_LE16(owe_buf, sta->owe_group);
3643 owe_buf += 2;
3644 os_memcpy(owe_buf, wpabuf_head(pub), wpabuf_len(pub));
3645 owe_buf += wpabuf_len(pub);
3646 wpabuf_free(pub);
3647 }
3648
3649 return owe_buf;
3650 }
3651 #endif /* CONFIG_OWE */
3652
3653
3654 #ifdef CONFIG_FILS
3655
3656 void fils_hlp_finish_assoc(struct hostapd_data *hapd, struct sta_info *sta)
3657 {
3658 u16 reply_res;
3659
3660 wpa_printf(MSG_DEBUG, "FILS: Finish association with " MACSTR,
3661 MAC2STR(sta->addr));
3662 eloop_cancel_timeout(fils_hlp_timeout, hapd, sta);
3663 if (!sta->fils_pending_assoc_req)
3664 return;
3665 reply_res = send_assoc_resp(hapd, sta, sta->addr, WLAN_STATUS_SUCCESS,
3666 sta->fils_pending_assoc_is_reassoc,
3667 sta->fils_pending_assoc_req,
3668 sta->fils_pending_assoc_req_len, 0);
3669 os_free(sta->fils_pending_assoc_req);
3670 sta->fils_pending_assoc_req = NULL;
3671 sta->fils_pending_assoc_req_len = 0;
3672 wpabuf_free(sta->fils_hlp_resp);
3673 sta->fils_hlp_resp = NULL;
3674 wpabuf_free(sta->hlp_dhcp_discover);
3675 sta->hlp_dhcp_discover = NULL;
3676
3677 /*
3678 * Remove the station in case transmission of a success response fails.
3679 * At this point the station was already added associated to the driver.
3680 */
3681 if (reply_res != WLAN_STATUS_SUCCESS)
3682 hostapd_drv_sta_remove(hapd, sta->addr);
3683 }
3684
3685
3686 void fils_hlp_timeout(void *eloop_ctx, void *eloop_data)
3687 {
3688 struct hostapd_data *hapd = eloop_ctx;
3689 struct sta_info *sta = eloop_data;
3690
3691 wpa_printf(MSG_DEBUG,
3692 "FILS: HLP response timeout - continue with association response for "
3693 MACSTR, MAC2STR(sta->addr));
3694 if (sta->fils_drv_assoc_finish)
3695 hostapd_notify_assoc_fils_finish(hapd, sta);
3696 else
3697 fils_hlp_finish_assoc(hapd, sta);
3698 }
3699
3700 #endif /* CONFIG_FILS */
3701
3702
3703 static void handle_assoc(struct hostapd_data *hapd,
3704 const struct ieee80211_mgmt *mgmt, size_t len,
3705 int reassoc, int rssi)
3706 {
3707 u16 capab_info, listen_interval, seq_ctrl, fc;
3708 u16 resp = WLAN_STATUS_SUCCESS, reply_res;
3709 const u8 *pos;
3710 int left, i;
3711 struct sta_info *sta;
3712 u8 *tmp = NULL;
3713 struct hostapd_sta_wpa_psk_short *psk = NULL;
3714 char *identity = NULL;
3715 char *radius_cui = NULL;
3716 #ifdef CONFIG_FILS
3717 int delay_assoc = 0;
3718 #endif /* CONFIG_FILS */
3719
3720 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
3721 sizeof(mgmt->u.assoc_req))) {
3722 wpa_printf(MSG_INFO, "handle_assoc(reassoc=%d) - too short payload (len=%lu)",
3723 reassoc, (unsigned long) len);
3724 return;
3725 }
3726
3727 #ifdef CONFIG_TESTING_OPTIONS
3728 if (reassoc) {
3729 if (hapd->iconf->ignore_reassoc_probability > 0.0 &&
3730 drand48() < hapd->iconf->ignore_reassoc_probability) {
3731 wpa_printf(MSG_INFO,
3732 "TESTING: ignoring reassoc request from "
3733 MACSTR, MAC2STR(mgmt->sa));
3734 return;
3735 }
3736 } else {
3737 if (hapd->iconf->ignore_assoc_probability > 0.0 &&
3738 drand48() < hapd->iconf->ignore_assoc_probability) {
3739 wpa_printf(MSG_INFO,
3740 "TESTING: ignoring assoc request from "
3741 MACSTR, MAC2STR(mgmt->sa));
3742 return;
3743 }
3744 }
3745 #endif /* CONFIG_TESTING_OPTIONS */
3746
3747 fc = le_to_host16(mgmt->frame_control);
3748 seq_ctrl = le_to_host16(mgmt->seq_ctrl);
3749
3750 if (reassoc) {
3751 capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info);
3752 listen_interval = le_to_host16(
3753 mgmt->u.reassoc_req.listen_interval);
3754 wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR
3755 " capab_info=0x%02x listen_interval=%d current_ap="
3756 MACSTR " seq_ctrl=0x%x%s",
3757 MAC2STR(mgmt->sa), capab_info, listen_interval,
3758 MAC2STR(mgmt->u.reassoc_req.current_ap),
3759 seq_ctrl, (fc & WLAN_FC_RETRY) ? " retry" : "");
3760 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req));
3761 pos = mgmt->u.reassoc_req.variable;
3762 } else {
3763 capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
3764 listen_interval = le_to_host16(
3765 mgmt->u.assoc_req.listen_interval);
3766 wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR
3767 " capab_info=0x%02x listen_interval=%d "
3768 "seq_ctrl=0x%x%s",
3769 MAC2STR(mgmt->sa), capab_info, listen_interval,
3770 seq_ctrl, (fc & WLAN_FC_RETRY) ? " retry" : "");
3771 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req));
3772 pos = mgmt->u.assoc_req.variable;
3773 }
3774
3775 sta = ap_get_sta(hapd, mgmt->sa);
3776 #ifdef CONFIG_IEEE80211R_AP
3777 if (sta && sta->auth_alg == WLAN_AUTH_FT &&
3778 (sta->flags & WLAN_STA_AUTH) == 0) {
3779 wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate "
3780 "prior to authentication since it is using "
3781 "over-the-DS FT", MAC2STR(mgmt->sa));
3782
3783 /*
3784 * Mark station as authenticated, to avoid adding station
3785 * entry in the driver as associated and not authenticated
3786 */
3787 sta->flags |= WLAN_STA_AUTH;
3788 } else
3789 #endif /* CONFIG_IEEE80211R_AP */
3790 if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
3791 if (hapd->iface->current_mode &&
3792 hapd->iface->current_mode->mode ==
3793 HOSTAPD_MODE_IEEE80211AD) {
3794 int acl_res;
3795 u32 session_timeout, acct_interim_interval;
3796 struct vlan_description vlan_id;
3797
3798 acl_res = ieee802_11_allowed_address(
3799 hapd, mgmt->sa, (const u8 *) mgmt, len,
3800 &session_timeout, &acct_interim_interval,
3801 &vlan_id, &psk, &identity, &radius_cui, 0);
3802 if (acl_res == HOSTAPD_ACL_REJECT) {
3803 wpa_msg(hapd->msg_ctx, MSG_DEBUG,
3804 "Ignore Association Request frame from "
3805 MACSTR " due to ACL reject",
3806 MAC2STR(mgmt->sa));
3807 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
3808 goto fail;
3809 }
3810 if (acl_res == HOSTAPD_ACL_PENDING)
3811 return;
3812
3813 /* DMG/IEEE 802.11ad does not use authentication.
3814 * Allocate sta entry upon association. */
3815 sta = ap_sta_add(hapd, mgmt->sa);
3816 if (!sta) {
3817 hostapd_logger(hapd, mgmt->sa,
3818 HOSTAPD_MODULE_IEEE80211,
3819 HOSTAPD_LEVEL_INFO,
3820 "Failed to add STA");
3821 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
3822 goto fail;
3823 }
3824
3825 acl_res = ieee802_11_set_radius_info(
3826 hapd, sta, acl_res, session_timeout,
3827 acct_interim_interval, &vlan_id, &psk,
3828 &identity, &radius_cui);
3829 if (acl_res) {
3830 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
3831 goto fail;
3832 }
3833
3834 hostapd_logger(hapd, sta->addr,
3835 HOSTAPD_MODULE_IEEE80211,
3836 HOSTAPD_LEVEL_DEBUG,
3837 "Skip authentication for DMG/IEEE 802.11ad");
3838 sta->flags |= WLAN_STA_AUTH;
3839 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
3840 sta->auth_alg = WLAN_AUTH_OPEN;
3841 } else {
3842 hostapd_logger(hapd, mgmt->sa,
3843 HOSTAPD_MODULE_IEEE80211,
3844 HOSTAPD_LEVEL_INFO,
3845 "Station tried to associate before authentication (aid=%d flags=0x%x)",
3846 sta ? sta->aid : -1,
3847 sta ? sta->flags : 0);
3848 send_deauth(hapd, mgmt->sa,
3849 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA);
3850 return;
3851 }
3852 }
3853
3854 if ((fc & WLAN_FC_RETRY) &&
3855 sta->last_seq_ctrl != WLAN_INVALID_MGMT_SEQ &&
3856 sta->last_seq_ctrl == seq_ctrl &&
3857 sta->last_subtype == (reassoc ? WLAN_FC_STYPE_REASSOC_REQ :
3858 WLAN_FC_STYPE_ASSOC_REQ)) {
3859 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
3860 HOSTAPD_LEVEL_DEBUG,
3861 "Drop repeated association frame seq_ctrl=0x%x",
3862 seq_ctrl);
3863 return;
3864 }
3865 sta->last_seq_ctrl = seq_ctrl;
3866 sta->last_subtype = reassoc ? WLAN_FC_STYPE_REASSOC_REQ :
3867 WLAN_FC_STYPE_ASSOC_REQ;
3868
3869 if (hapd->tkip_countermeasures) {
3870 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
3871 goto fail;
3872 }
3873
3874 if (listen_interval > hapd->conf->max_listen_interval) {
3875 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
3876 HOSTAPD_LEVEL_DEBUG,
3877 "Too large Listen Interval (%d)",
3878 listen_interval);
3879 resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE;
3880 goto fail;
3881 }
3882
3883 #ifdef CONFIG_MBO
3884 if (hapd->conf->mbo_enabled && hapd->mbo_assoc_disallow) {
3885 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
3886 goto fail;
3887 }
3888
3889 if (hapd->iconf->rssi_reject_assoc_rssi && rssi &&
3890 rssi < hapd->iconf->rssi_reject_assoc_rssi &&
3891 (sta->auth_rssi == 0 ||
3892 sta->auth_rssi < hapd->iconf->rssi_reject_assoc_rssi)) {
3893 resp = WLAN_STATUS_DENIED_POOR_CHANNEL_CONDITIONS;
3894 goto fail;
3895 }
3896 #endif /* CONFIG_MBO */
3897
3898 /*
3899 * sta->capability is used in check_assoc_ies() for RRM enabled
3900 * capability element.
3901 */
3902 sta->capability = capab_info;
3903
3904 #ifdef CONFIG_FILS
3905 if (sta->auth_alg == WLAN_AUTH_FILS_SK ||
3906 sta->auth_alg == WLAN_AUTH_FILS_SK_PFS ||
3907 sta->auth_alg == WLAN_AUTH_FILS_PK) {
3908 int res;
3909
3910 /* The end of the payload is encrypted. Need to decrypt it
3911 * before parsing. */
3912
3913 tmp = os_memdup(pos, left);
3914 if (!tmp) {
3915 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
3916 goto fail;
3917 }
3918
3919 res = fils_decrypt_assoc(sta->wpa_sm, sta->fils_session, mgmt,
3920 len, tmp, left);
3921 if (res < 0) {
3922 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
3923 goto fail;
3924 }
3925 pos = tmp;
3926 left = res;
3927 }
3928 #endif /* CONFIG_FILS */
3929
3930 /* followed by SSID and Supported rates; and HT capabilities if 802.11n
3931 * is used */
3932 resp = check_assoc_ies(hapd, sta, pos, left, reassoc);
3933 if (resp != WLAN_STATUS_SUCCESS)
3934 goto fail;
3935
3936 if (hostapd_get_aid(hapd, sta) < 0) {
3937 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
3938 HOSTAPD_LEVEL_INFO, "No room for more AIDs");
3939 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
3940 goto fail;
3941 }
3942
3943 sta->listen_interval = listen_interval;
3944
3945 if (hapd->iface->current_mode &&
3946 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
3947 sta->flags |= WLAN_STA_NONERP;
3948 for (i = 0; i < sta->supported_rates_len; i++) {
3949 if ((sta->supported_rates[i] & 0x7f) > 22) {
3950 sta->flags &= ~WLAN_STA_NONERP;
3951 break;
3952 }
3953 }
3954 if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) {
3955 sta->nonerp_set = 1;
3956 hapd->iface->num_sta_non_erp++;
3957 if (hapd->iface->num_sta_non_erp == 1)
3958 ieee802_11_set_beacons(hapd->iface);
3959 }
3960
3961 if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) &&
3962 !sta->no_short_slot_time_set) {
3963 sta->no_short_slot_time_set = 1;
3964 hapd->iface->num_sta_no_short_slot_time++;
3965 if (hapd->iface->current_mode &&
3966 hapd->iface->current_mode->mode ==
3967 HOSTAPD_MODE_IEEE80211G &&
3968 hapd->iface->num_sta_no_short_slot_time == 1)
3969 ieee802_11_set_beacons(hapd->iface);
3970 }
3971
3972 if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3973 sta->flags |= WLAN_STA_SHORT_PREAMBLE;
3974 else
3975 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
3976
3977 if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
3978 !sta->no_short_preamble_set) {
3979 sta->no_short_preamble_set = 1;
3980 hapd->iface->num_sta_no_short_preamble++;
3981 if (hapd->iface->current_mode &&
3982 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
3983 && hapd->iface->num_sta_no_short_preamble == 1)
3984 ieee802_11_set_beacons(hapd->iface);
3985 }
3986
3987 #ifdef CONFIG_IEEE80211N
3988 update_ht_state(hapd, sta);
3989 #endif /* CONFIG_IEEE80211N */
3990
3991 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
3992 HOSTAPD_LEVEL_DEBUG,
3993 "association OK (aid %d)", sta->aid);
3994 /* Station will be marked associated, after it acknowledges AssocResp
3995 */
3996 sta->flags |= WLAN_STA_ASSOC_REQ_OK;
3997
3998 #ifdef CONFIG_IEEE80211W
3999 if ((sta->flags & WLAN_STA_MFP) && sta->sa_query_timed_out) {
4000 wpa_printf(MSG_DEBUG, "Allowing %sassociation after timed out "
4001 "SA Query procedure", reassoc ? "re" : "");
4002 /* TODO: Send a protected Disassociate frame to the STA using
4003 * the old key and Reason Code "Previous Authentication no
4004 * longer valid". Make sure this is only sent protected since
4005 * unprotected frame would be received by the STA that is now
4006 * trying to associate.
4007 */
4008 }
4009 #endif /* CONFIG_IEEE80211W */
4010
4011 /* Make sure that the previously registered inactivity timer will not
4012 * remove the STA immediately. */
4013 sta->timeout_next = STA_NULLFUNC;
4014
4015 #ifdef CONFIG_TAXONOMY
4016 taxonomy_sta_info_assoc_req(hapd, sta, pos, left);
4017 #endif /* CONFIG_TAXONOMY */
4018
4019 sta->pending_wds_enable = 0;
4020
4021 #ifdef CONFIG_FILS
4022 if (sta->auth_alg == WLAN_AUTH_FILS_SK ||
4023 sta->auth_alg == WLAN_AUTH_FILS_SK_PFS ||
4024 sta->auth_alg == WLAN_AUTH_FILS_PK) {
4025 if (fils_process_hlp(hapd, sta, pos, left) > 0)
4026 delay_assoc = 1;
4027 }
4028 #endif /* CONFIG_FILS */
4029
4030 fail:
4031 os_free(identity);
4032 os_free(radius_cui);
4033 hostapd_free_psk_list(psk);
4034
4035 /*
4036 * In case of a successful response, add the station to the driver.
4037 * Otherwise, the kernel may ignore Data frames before we process the
4038 * ACK frame (TX status). In case of a failure, this station will be
4039 * removed.
4040 *
4041 * Note that this is not compliant with the IEEE 802.11 standard that
4042 * states that a non-AP station should transition into the
4043 * authenticated/associated state only after the station acknowledges
4044 * the (Re)Association Response frame. However, still do this as:
4045 *
4046 * 1. In case the station does not acknowledge the (Re)Association
4047 * Response frame, it will be removed.
4048 * 2. Data frames will be dropped in the kernel until the station is
4049 * set into authorized state, and there are no significant known
4050 * issues with processing other non-Data Class 3 frames during this
4051 * window.
4052 */
4053 if (resp == WLAN_STATUS_SUCCESS && sta &&
4054 add_associated_sta(hapd, sta, reassoc))
4055 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
4056
4057 #ifdef CONFIG_FILS
4058 if (sta && delay_assoc && resp == WLAN_STATUS_SUCCESS &&
4059 eloop_is_timeout_registered(fils_hlp_timeout, hapd, sta) &&
4060 sta->fils_pending_assoc_req) {
4061 /* Do not reschedule fils_hlp_timeout in case the station
4062 * retransmits (Re)Association Request frame while waiting for
4063 * the previously started FILS HLP wait, so that the timeout can
4064 * be determined from the first pending attempt. */
4065 wpa_printf(MSG_DEBUG,
4066 "FILS: Continue waiting for HLP processing before sending (Re)Association Response frame to "
4067 MACSTR, MAC2STR(sta->addr));
4068 os_free(tmp);
4069 return;
4070 }
4071 if (sta) {
4072 eloop_cancel_timeout(fils_hlp_timeout, hapd, sta);
4073 os_free(sta->fils_pending_assoc_req);
4074 sta->fils_pending_assoc_req = NULL;
4075 sta->fils_pending_assoc_req_len = 0;
4076 wpabuf_free(sta->fils_hlp_resp);
4077 sta->fils_hlp_resp = NULL;
4078 }
4079 if (sta && delay_assoc && resp == WLAN_STATUS_SUCCESS) {
4080 sta->fils_pending_assoc_req = tmp;
4081 sta->fils_pending_assoc_req_len = left;
4082 sta->fils_pending_assoc_is_reassoc = reassoc;
4083 sta->fils_drv_assoc_finish = 0;
4084 wpa_printf(MSG_DEBUG,
4085 "FILS: Waiting for HLP processing before sending (Re)Association Response frame to "
4086 MACSTR, MAC2STR(sta->addr));
4087 eloop_cancel_timeout(fils_hlp_timeout, hapd, sta);
4088 eloop_register_timeout(0, hapd->conf->fils_hlp_wait_time * 1024,
4089 fils_hlp_timeout, hapd, sta);
4090 return;
4091 }
4092 #endif /* CONFIG_FILS */
4093
4094 reply_res = send_assoc_resp(hapd, sta, mgmt->sa, resp, reassoc, pos,
4095 left, rssi);
4096 os_free(tmp);
4097
4098 /*
4099 * Remove the station in case tranmission of a success response fails
4100 * (the STA was added associated to the driver) or if the station was
4101 * previously added unassociated.
4102 */
4103 if (sta && ((reply_res != WLAN_STATUS_SUCCESS &&
4104 resp == WLAN_STATUS_SUCCESS) || sta->added_unassoc)) {
4105 hostapd_drv_sta_remove(hapd, sta->addr);
4106 sta->added_unassoc = 0;
4107 }
4108 }
4109
4110
4111 static void handle_disassoc(struct hostapd_data *hapd,
4112 const struct ieee80211_mgmt *mgmt, size_t len)
4113 {
4114 struct sta_info *sta;
4115
4116 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) {
4117 wpa_printf(MSG_INFO, "handle_disassoc - too short payload (len=%lu)",
4118 (unsigned long) len);
4119 return;
4120 }
4121
4122 wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d",
4123 MAC2STR(mgmt->sa),
4124 le_to_host16(mgmt->u.disassoc.reason_code));
4125
4126 sta = ap_get_sta(hapd, mgmt->sa);
4127 if (sta == NULL) {
4128 wpa_printf(MSG_INFO, "Station " MACSTR " trying to disassociate, but it is not associated",
4129 MAC2STR(mgmt->sa));
4130 return;
4131 }
4132
4133 ap_sta_set_authorized(hapd, sta, 0);
4134 sta->last_seq_ctrl = WLAN_INVALID_MGMT_SEQ;
4135 sta->flags &= ~(WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK);
4136 wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
4137 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
4138 HOSTAPD_LEVEL_INFO, "disassociated");
4139 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
4140 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
4141 /* Stop Accounting and IEEE 802.1X sessions, but leave the STA
4142 * authenticated. */
4143 accounting_sta_stop(hapd, sta);
4144 ieee802_1x_free_station(hapd, sta);
4145 if (sta->ipaddr)
4146 hostapd_drv_br_delete_ip_neigh(hapd, 4, (u8 *) &sta->ipaddr);
4147 ap_sta_ip6addr_del(hapd, sta);
4148 hostapd_drv_sta_remove(hapd, sta->addr);
4149 sta->added_unassoc = 0;
4150
4151 if (sta->timeout_next == STA_NULLFUNC ||
4152 sta->timeout_next == STA_DISASSOC) {
4153 sta->timeout_next = STA_DEAUTH;
4154 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
4155 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
4156 hapd, sta);
4157 }
4158
4159 mlme_disassociate_indication(
4160 hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code));
4161
4162 /* DMG/IEEE 802.11ad does not use deauthication. Deallocate sta upon
4163 * disassociation. */
4164 if (hapd->iface->current_mode &&
4165 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211AD) {
4166 sta->flags &= ~WLAN_STA_AUTH;
4167 wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
4168 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
4169 HOSTAPD_LEVEL_DEBUG, "deauthenticated");
4170 ap_free_sta(hapd, sta);
4171 }
4172 }
4173
4174
4175 static void handle_deauth(struct hostapd_data *hapd,
4176 const struct ieee80211_mgmt *mgmt, size_t len)
4177 {
4178 struct sta_info *sta;
4179
4180 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) {
4181 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "handle_deauth - too short "
4182 "payload (len=%lu)", (unsigned long) len);
4183 return;
4184 }
4185
4186 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "deauthentication: STA=" MACSTR
4187 " reason_code=%d",
4188 MAC2STR(mgmt->sa), le_to_host16(mgmt->u.deauth.reason_code));
4189
4190 sta = ap_get_sta(hapd, mgmt->sa);
4191 if (sta == NULL) {
4192 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR " trying "
4193 "to deauthenticate, but it is not authenticated",
4194 MAC2STR(mgmt->sa));
4195 return;
4196 }
4197
4198 ap_sta_set_authorized(hapd, sta, 0);
4199 sta->last_seq_ctrl = WLAN_INVALID_MGMT_SEQ;
4200 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC |
4201 WLAN_STA_ASSOC_REQ_OK);
4202 wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
4203 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
4204 HOSTAPD_LEVEL_DEBUG, "deauthenticated");
4205 mlme_deauthenticate_indication(
4206 hapd, sta, le_to_host16(mgmt->u.deauth.reason_code));
4207 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
4208 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
4209 ap_free_sta(hapd, sta);
4210 }
4211
4212
4213 static void handle_beacon(struct hostapd_data *hapd,
4214 const struct ieee80211_mgmt *mgmt, size_t len,
4215 struct hostapd_frame_info *fi)
4216 {
4217 struct ieee802_11_elems elems;
4218
4219 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) {
4220 wpa_printf(MSG_INFO, "handle_beacon - too short payload (len=%lu)",
4221 (unsigned long) len);
4222 return;
4223 }
4224
4225 (void) ieee802_11_parse_elems(mgmt->u.beacon.variable,
4226 len - (IEEE80211_HDRLEN +
4227 sizeof(mgmt->u.beacon)), &elems,
4228 0);
4229
4230 ap_list_process_beacon(hapd->iface, mgmt, &elems, fi);
4231 }
4232
4233
4234 #ifdef CONFIG_IEEE80211W
4235 static int robust_action_frame(u8 category)
4236 {
4237 return category != WLAN_ACTION_PUBLIC &&
4238 category != WLAN_ACTION_HT;
4239 }
4240 #endif /* CONFIG_IEEE80211W */
4241
4242
4243 static int handle_action(struct hostapd_data *hapd,
4244 const struct ieee80211_mgmt *mgmt, size_t len,
4245 unsigned int freq)
4246 {
4247 struct sta_info *sta;
4248 u8 *action __maybe_unused;
4249
4250 if (len < IEEE80211_HDRLEN + 2 + 1) {
4251 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
4252 HOSTAPD_LEVEL_DEBUG,
4253 "handle_action - too short payload (len=%lu)",
4254 (unsigned long) len);
4255 return 0;
4256 }
4257
4258 action = (u8 *) &mgmt->u.action.u;
4259 wpa_printf(MSG_DEBUG, "RX_ACTION category %u action %u sa " MACSTR
4260 " da " MACSTR " len %d freq %u",
4261 mgmt->u.action.category, *action,
4262 MAC2STR(mgmt->sa), MAC2STR(mgmt->da), (int) len, freq);
4263
4264 sta = ap_get_sta(hapd, mgmt->sa);
4265
4266 if (mgmt->u.action.category != WLAN_ACTION_PUBLIC &&
4267 (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))) {
4268 wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored Action "
4269 "frame (category=%u) from unassociated STA " MACSTR,
4270 mgmt->u.action.category, MAC2STR(mgmt->sa));
4271 return 0;
4272 }
4273
4274 #ifdef CONFIG_IEEE80211W
4275 if (sta && (sta->flags & WLAN_STA_MFP) &&
4276 !(mgmt->frame_control & host_to_le16(WLAN_FC_ISWEP)) &&
4277 robust_action_frame(mgmt->u.action.category)) {
4278 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
4279 HOSTAPD_LEVEL_DEBUG,
4280 "Dropped unprotected Robust Action frame from "
4281 "an MFP STA");
4282 return 0;
4283 }
4284 #endif /* CONFIG_IEEE80211W */
4285
4286 if (sta) {
4287 u16 fc = le_to_host16(mgmt->frame_control);
4288 u16 seq_ctrl = le_to_host16(mgmt->seq_ctrl);
4289
4290 if ((fc & WLAN_FC_RETRY) &&
4291 sta->last_seq_ctrl != WLAN_INVALID_MGMT_SEQ &&
4292 sta->last_seq_ctrl == seq_ctrl &&
4293 sta->last_subtype == WLAN_FC_STYPE_ACTION) {
4294 hostapd_logger(hapd, sta->addr,
4295 HOSTAPD_MODULE_IEEE80211,
4296 HOSTAPD_LEVEL_DEBUG,
4297 "Drop repeated action frame seq_ctrl=0x%x",
4298 seq_ctrl);
4299 return 1;
4300 }
4301
4302 sta->last_seq_ctrl = seq_ctrl;
4303 sta->last_subtype = WLAN_FC_STYPE_ACTION;
4304 }
4305
4306 switch (mgmt->u.action.category) {
4307 #ifdef CONFIG_IEEE80211R_AP
4308 case WLAN_ACTION_FT:
4309 if (!sta ||
4310 wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action,
4311 len - IEEE80211_HDRLEN))
4312 break;
4313 return 1;
4314 #endif /* CONFIG_IEEE80211R_AP */
4315 case WLAN_ACTION_WMM:
4316 hostapd_wmm_action(hapd, mgmt, len);
4317 return 1;
4318 #ifdef CONFIG_IEEE80211W
4319 case WLAN_ACTION_SA_QUERY:
4320 ieee802_11_sa_query_action(hapd, mgmt, len);
4321 return 1;
4322 #endif /* CONFIG_IEEE80211W */
4323 #ifdef CONFIG_WNM_AP
4324 case WLAN_ACTION_WNM:
4325 ieee802_11_rx_wnm_action_ap(hapd, mgmt, len);
4326 return 1;
4327 #endif /* CONFIG_WNM_AP */
4328 #ifdef CONFIG_FST
4329 case WLAN_ACTION_FST:
4330 if (hapd->iface->fst)
4331 fst_rx_action(hapd->iface->fst, mgmt, len);
4332 else
4333 wpa_printf(MSG_DEBUG,
4334 "FST: Ignore FST Action frame - no FST attached");
4335 return 1;
4336 #endif /* CONFIG_FST */
4337 case WLAN_ACTION_PUBLIC:
4338 case WLAN_ACTION_PROTECTED_DUAL:
4339 #ifdef CONFIG_IEEE80211N
4340 if (len >= IEEE80211_HDRLEN + 2 &&
4341 mgmt->u.action.u.public_action.action ==
4342 WLAN_PA_20_40_BSS_COEX) {
4343 hostapd_2040_coex_action(hapd, mgmt, len);
4344 return 1;
4345 }
4346 #endif /* CONFIG_IEEE80211N */
4347 #ifdef CONFIG_DPP
4348 if (len >= IEEE80211_HDRLEN + 6 &&
4349 mgmt->u.action.u.vs_public_action.action ==
4350 WLAN_PA_VENDOR_SPECIFIC &&
4351 WPA_GET_BE24(mgmt->u.action.u.vs_public_action.oui) ==
4352 OUI_WFA &&
4353 mgmt->u.action.u.vs_public_action.variable[0] ==
4354 DPP_OUI_TYPE) {
4355 const u8 *pos, *end;
4356
4357 pos = mgmt->u.action.u.vs_public_action.oui;
4358 end = ((const u8 *) mgmt) + len;
4359 hostapd_dpp_rx_action(hapd, mgmt->sa, pos, end - pos,
4360 freq);
4361 return 1;
4362 }
4363 if (len >= IEEE80211_HDRLEN + 2 &&
4364 (mgmt->u.action.u.public_action.action ==
4365 WLAN_PA_GAS_INITIAL_RESP ||
4366 mgmt->u.action.u.public_action.action ==
4367 WLAN_PA_GAS_COMEBACK_RESP)) {
4368 const u8 *pos, *end;
4369
4370 pos = &mgmt->u.action.u.public_action.action;
4371 end = ((const u8 *) mgmt) + len;
4372 gas_query_ap_rx(hapd->gas, mgmt->sa,
4373 mgmt->u.action.category,
4374 pos, end - pos, hapd->iface->freq);
4375 return 1;
4376 }
4377 #endif /* CONFIG_DPP */
4378 if (hapd->public_action_cb) {
4379 hapd->public_action_cb(hapd->public_action_cb_ctx,
4380 (u8 *) mgmt, len,
4381 hapd->iface->freq);
4382 }
4383 if (hapd->public_action_cb2) {
4384 hapd->public_action_cb2(hapd->public_action_cb2_ctx,
4385 (u8 *) mgmt, len,
4386 hapd->iface->freq);
4387 }
4388 if (hapd->public_action_cb || hapd->public_action_cb2)
4389 return 1;
4390 break;
4391 case WLAN_ACTION_VENDOR_SPECIFIC:
4392 if (hapd->vendor_action_cb) {
4393 if (hapd->vendor_action_cb(hapd->vendor_action_cb_ctx,
4394 (u8 *) mgmt, len,
4395 hapd->iface->freq) == 0)
4396 return 1;
4397 }
4398 break;
4399 case WLAN_ACTION_RADIO_MEASUREMENT:
4400 hostapd_handle_radio_measurement(hapd, (const u8 *) mgmt, len);
4401 return 1;
4402 }
4403
4404 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
4405 HOSTAPD_LEVEL_DEBUG,
4406 "handle_action - unknown action category %d or invalid "
4407 "frame",
4408 mgmt->u.action.category);
4409 if (!is_multicast_ether_addr(mgmt->da) &&
4410 !(mgmt->u.action.category & 0x80) &&
4411 !is_multicast_ether_addr(mgmt->sa)) {
4412 struct ieee80211_mgmt *resp;
4413
4414 /*
4415 * IEEE 802.11-REVma/D9.0 - 7.3.1.11
4416 * Return the Action frame to the source without change
4417 * except that MSB of the Category set to 1.
4418 */
4419 wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action "
4420 "frame back to sender");
4421 resp = os_memdup(mgmt, len);
4422 if (resp == NULL)
4423 return 0;
4424 os_memcpy(resp->da, resp->sa, ETH_ALEN);
4425 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
4426 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
4427 resp->u.action.category |= 0x80;
4428
4429 if (hostapd_drv_send_mlme(hapd, resp, len, 0) < 0) {
4430 wpa_printf(MSG_ERROR, "IEEE 802.11: Failed to send "
4431 "Action frame");
4432 }
4433 os_free(resp);
4434 }
4435
4436 return 1;
4437 }
4438
4439
4440 /**
4441 * ieee802_11_mgmt - process incoming IEEE 802.11 management frames
4442 * @hapd: hostapd BSS data structure (the BSS to which the management frame was
4443 * sent to)
4444 * @buf: management frame data (starting from IEEE 802.11 header)
4445 * @len: length of frame data in octets
4446 * @fi: meta data about received frame (signal level, etc.)
4447 *
4448 * Process all incoming IEEE 802.11 management frames. This will be called for
4449 * each frame received from the kernel driver through wlan#ap interface. In
4450 * addition, it can be called to re-inserted pending frames (e.g., when using
4451 * external RADIUS server as an MAC ACL).
4452 */
4453 int ieee802_11_mgmt(struct hostapd_data *hapd, const u8 *buf, size_t len,
4454 struct hostapd_frame_info *fi)
4455 {
4456 struct ieee80211_mgmt *mgmt;
4457 u16 fc, stype;
4458 int ret = 0;
4459 unsigned int freq;
4460 int ssi_signal = fi ? fi->ssi_signal : 0;
4461
4462 if (len < 24)
4463 return 0;
4464
4465 if (fi && fi->freq)
4466 freq = fi->freq;
4467 else
4468 freq = hapd->iface->freq;
4469
4470 mgmt = (struct ieee80211_mgmt *) buf;
4471 fc = le_to_host16(mgmt->frame_control);
4472 stype = WLAN_FC_GET_STYPE(fc);
4473
4474 if (stype == WLAN_FC_STYPE_BEACON) {
4475 handle_beacon(hapd, mgmt, len, fi);
4476 return 1;
4477 }
4478
4479 if (!is_broadcast_ether_addr(mgmt->bssid) &&
4480 #ifdef CONFIG_P2P
4481 /* Invitation responses can be sent with the peer MAC as BSSID */
4482 !((hapd->conf->p2p & P2P_GROUP_OWNER) &&
4483 stype == WLAN_FC_STYPE_ACTION) &&
4484 #endif /* CONFIG_P2P */
4485 #ifdef CONFIG_MESH
4486 !(hapd->conf->mesh & MESH_ENABLED) &&
4487 #endif /* CONFIG_MESH */
4488 os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) {
4489 wpa_printf(MSG_INFO, "MGMT: BSSID=" MACSTR " not our address",
4490 MAC2STR(mgmt->bssid));
4491 return 0;
4492 }
4493
4494
4495 if (stype == WLAN_FC_STYPE_PROBE_REQ) {
4496 handle_probe_req(hapd, mgmt, len, ssi_signal);
4497 return 1;
4498 }
4499
4500 if ((!is_broadcast_ether_addr(mgmt->da) ||
4501 stype != WLAN_FC_STYPE_ACTION) &&
4502 os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) {
4503 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
4504 HOSTAPD_LEVEL_DEBUG,
4505 "MGMT: DA=" MACSTR " not our address",
4506 MAC2STR(mgmt->da));
4507 return 0;
4508 }
4509
4510 if (hapd->iconf->track_sta_max_num)
4511 sta_track_add(hapd->iface, mgmt->sa, ssi_signal);
4512
4513 switch (stype) {
4514 case WLAN_FC_STYPE_AUTH:
4515 wpa_printf(MSG_DEBUG, "mgmt::auth");
4516 handle_auth(hapd, mgmt, len, ssi_signal, 0);
4517 ret = 1;
4518 break;
4519 case WLAN_FC_STYPE_ASSOC_REQ:
4520 wpa_printf(MSG_DEBUG, "mgmt::assoc_req");
4521 handle_assoc(hapd, mgmt, len, 0, ssi_signal);
4522 ret = 1;
4523 break;
4524 case WLAN_FC_STYPE_REASSOC_REQ:
4525 wpa_printf(MSG_DEBUG, "mgmt::reassoc_req");
4526 handle_assoc(hapd, mgmt, len, 1, ssi_signal);
4527 ret = 1;
4528 break;
4529 case WLAN_FC_STYPE_DISASSOC:
4530 wpa_printf(MSG_DEBUG, "mgmt::disassoc");
4531 handle_disassoc(hapd, mgmt, len);
4532 ret = 1;
4533 break;
4534 case WLAN_FC_STYPE_DEAUTH:
4535 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "mgmt::deauth");
4536 handle_deauth(hapd, mgmt, len);
4537 ret = 1;
4538 break;
4539 case WLAN_FC_STYPE_ACTION:
4540 wpa_printf(MSG_DEBUG, "mgmt::action");
4541 ret = handle_action(hapd, mgmt, len, freq);
4542 break;
4543 default:
4544 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
4545 HOSTAPD_LEVEL_DEBUG,
4546 "unknown mgmt frame subtype %d", stype);
4547 break;
4548 }
4549
4550 return ret;
4551 }
4552
4553
4554 static void handle_auth_cb(struct hostapd_data *hapd,
4555 const struct ieee80211_mgmt *mgmt,
4556 size_t len, int ok)
4557 {
4558 u16 auth_alg, auth_transaction, status_code;
4559 struct sta_info *sta;
4560
4561 sta = ap_get_sta(hapd, mgmt->da);
4562 if (!sta) {
4563 wpa_printf(MSG_DEBUG, "handle_auth_cb: STA " MACSTR
4564 " not found",
4565 MAC2STR(mgmt->da));
4566 return;
4567 }
4568
4569 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
4570 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
4571 status_code = le_to_host16(mgmt->u.auth.status_code);
4572
4573 if (!ok) {
4574 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
4575 HOSTAPD_LEVEL_NOTICE,
4576 "did not acknowledge authentication response");
4577 goto fail;
4578 }
4579
4580 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
4581 wpa_printf(MSG_INFO, "handle_auth_cb - too short payload (len=%lu)",
4582 (unsigned long) len);
4583 goto fail;
4584 }
4585
4586 if (status_code == WLAN_STATUS_SUCCESS &&
4587 ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
4588 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
4589 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
4590 HOSTAPD_LEVEL_INFO, "authenticated");
4591 sta->flags |= WLAN_STA_AUTH;
4592 if (sta->added_unassoc)
4593 hostapd_set_sta_flags(hapd, sta);
4594 return;
4595 }
4596
4597 fail:
4598 if (status_code != WLAN_STATUS_SUCCESS && sta->added_unassoc) {
4599 hostapd_drv_sta_remove(hapd, sta->addr);
4600 sta->added_unassoc = 0;
4601 }
4602 }
4603
4604
4605 static void hostapd_set_wds_encryption(struct hostapd_data *hapd,
4606 struct sta_info *sta,
4607 char *ifname_wds)
4608 {
4609 int i;
4610 struct hostapd_ssid *ssid = &hapd->conf->ssid;
4611
4612 if (hapd->conf->ieee802_1x || hapd->conf->wpa)
4613 return;
4614
4615 for (i = 0; i < 4; i++) {
4616 if (ssid->wep.key[i] &&
4617 hostapd_drv_set_key(ifname_wds, hapd, WPA_ALG_WEP, NULL, i,
4618 i == ssid->wep.idx, NULL, 0,
4619 ssid->wep.key[i], ssid->wep.len[i])) {
4620 wpa_printf(MSG_WARNING,
4621 "Could not set WEP keys for WDS interface; %s",
4622 ifname_wds);
4623 break;
4624 }
4625 }
4626 }
4627
4628
4629 static void handle_assoc_cb(struct hostapd_data *hapd,
4630 const struct ieee80211_mgmt *mgmt,
4631 size_t len, int reassoc, int ok)
4632 {
4633 u16 status;
4634 struct sta_info *sta;
4635 int new_assoc = 1;
4636
4637 sta = ap_get_sta(hapd, mgmt->da);
4638 if (!sta) {
4639 wpa_printf(MSG_INFO, "handle_assoc_cb: STA " MACSTR " not found",
4640 MAC2STR(mgmt->da));
4641 return;
4642 }
4643
4644 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) :
4645 sizeof(mgmt->u.assoc_resp))) {
4646 wpa_printf(MSG_INFO,
4647 "handle_assoc_cb(reassoc=%d) - too short payload (len=%lu)",
4648 reassoc, (unsigned long) len);
4649 hostapd_drv_sta_remove(hapd, sta->addr);
4650 return;
4651 }
4652
4653 if (reassoc)
4654 status = le_to_host16(mgmt->u.reassoc_resp.status_code);
4655 else
4656 status = le_to_host16(mgmt->u.assoc_resp.status_code);
4657
4658 if (!ok) {
4659 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
4660 HOSTAPD_LEVEL_DEBUG,
4661 "did not acknowledge association response");
4662 sta->flags &= ~WLAN_STA_ASSOC_REQ_OK;
4663 /* The STA is added only in case of SUCCESS */
4664 if (status == WLAN_STATUS_SUCCESS)
4665 hostapd_drv_sta_remove(hapd, sta->addr);
4666
4667 return;
4668 }
4669
4670 if (status != WLAN_STATUS_SUCCESS)
4671 return;
4672
4673 /* Stop previous accounting session, if one is started, and allocate
4674 * new session id for the new session. */
4675 accounting_sta_stop(hapd, sta);
4676
4677 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
4678 HOSTAPD_LEVEL_INFO,
4679 "associated (aid %d)",
4680 sta->aid);
4681
4682 if (sta->flags & WLAN_STA_ASSOC)
4683 new_assoc = 0;
4684 sta->flags |= WLAN_STA_ASSOC;
4685 sta->flags &= ~WLAN_STA_WNM_SLEEP_MODE;
4686 if ((!hapd->conf->ieee802_1x && !hapd->conf->wpa &&
4687 !hapd->conf->osen) ||
4688 sta->auth_alg == WLAN_AUTH_FILS_SK ||
4689 sta->auth_alg == WLAN_AUTH_FILS_SK_PFS ||
4690 sta->auth_alg == WLAN_AUTH_FILS_PK ||
4691 sta->auth_alg == WLAN_AUTH_FT) {
4692 /*
4693 * Open, static WEP, FT protocol, or FILS; no separate
4694 * authorization step.
4695 */
4696 ap_sta_set_authorized(hapd, sta, 1);
4697 }
4698
4699 if (reassoc)
4700 mlme_reassociate_indication(hapd, sta);
4701 else
4702 mlme_associate_indication(hapd, sta);
4703
4704 #ifdef CONFIG_IEEE80211W
4705 sta->sa_query_timed_out = 0;
4706 #endif /* CONFIG_IEEE80211W */
4707
4708 if (sta->eapol_sm == NULL) {
4709 /*
4710 * This STA does not use RADIUS server for EAP authentication,
4711 * so bind it to the selected VLAN interface now, since the
4712 * interface selection is not going to change anymore.
4713 */
4714 if (ap_sta_bind_vlan(hapd, sta) < 0)
4715 return;
4716 } else if (sta->vlan_id) {
4717 /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */
4718 if (ap_sta_bind_vlan(hapd, sta) < 0)
4719 return;
4720 }
4721
4722 hostapd_set_sta_flags(hapd, sta);
4723
4724 if (!(sta->flags & WLAN_STA_WDS) && sta->pending_wds_enable) {
4725 wpa_printf(MSG_DEBUG, "Enable 4-address WDS mode for STA "
4726 MACSTR " based on pending request",
4727 MAC2STR(sta->addr));
4728 sta->pending_wds_enable = 0;
4729 sta->flags |= WLAN_STA_WDS;
4730 }
4731
4732 if (sta->flags & (WLAN_STA_WDS | WLAN_STA_MULTI_AP)) {
4733 int ret;
4734 char ifname_wds[IFNAMSIZ + 1];
4735
4736 wpa_printf(MSG_DEBUG, "Reenable 4-address WDS mode for STA "
4737 MACSTR " (aid %u)",
4738 MAC2STR(sta->addr), sta->aid);
4739 ret = hostapd_set_wds_sta(hapd, ifname_wds, sta->addr,
4740 sta->aid, 1);
4741 if (!ret)
4742 hostapd_set_wds_encryption(hapd, sta, ifname_wds);
4743 }
4744
4745 if (sta->auth_alg == WLAN_AUTH_FT)
4746 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
4747 else
4748 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
4749 hapd->new_assoc_sta_cb(hapd, sta, !new_assoc);
4750 ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
4751
4752 #ifdef CONFIG_FILS
4753 if ((sta->auth_alg == WLAN_AUTH_FILS_SK ||
4754 sta->auth_alg == WLAN_AUTH_FILS_SK_PFS ||
4755 sta->auth_alg == WLAN_AUTH_FILS_PK) &&
4756 fils_set_tk(sta->wpa_sm) < 0) {
4757 wpa_printf(MSG_DEBUG, "FILS: TK configuration failed");
4758 ap_sta_disconnect(hapd, sta, sta->addr,
4759 WLAN_REASON_UNSPECIFIED);
4760 return;
4761 }
4762 #endif /* CONFIG_FILS */
4763
4764 if (sta->pending_eapol_rx) {
4765 struct os_reltime now, age;
4766
4767 os_get_reltime(&now);
4768 os_reltime_sub(&now, &sta->pending_eapol_rx->rx_time, &age);
4769 if (age.sec == 0 && age.usec < 200000) {
4770 wpa_printf(MSG_DEBUG,
4771 "Process pending EAPOL frame that was received from " MACSTR " just before association notification",
4772 MAC2STR(sta->addr));
4773 ieee802_1x_receive(
4774 hapd, mgmt->da,
4775 wpabuf_head(sta->pending_eapol_rx->buf),
4776 wpabuf_len(sta->pending_eapol_rx->buf));
4777 }
4778 wpabuf_free(sta->pending_eapol_rx->buf);
4779 os_free(sta->pending_eapol_rx);
4780 sta->pending_eapol_rx = NULL;
4781 }
4782 }
4783
4784
4785 static void handle_deauth_cb(struct hostapd_data *hapd,
4786 const struct ieee80211_mgmt *mgmt,
4787 size_t len, int ok)
4788 {
4789 struct sta_info *sta;
4790 if (is_multicast_ether_addr(mgmt->da))
4791 return;
4792 sta = ap_get_sta(hapd, mgmt->da);
4793 if (!sta) {
4794 wpa_printf(MSG_DEBUG, "handle_deauth_cb: STA " MACSTR
4795 " not found", MAC2STR(mgmt->da));
4796 return;
4797 }
4798 if (ok)
4799 wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged deauth",
4800 MAC2STR(sta->addr));
4801 else
4802 wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge "
4803 "deauth", MAC2STR(sta->addr));
4804
4805 ap_sta_deauth_cb(hapd, sta);
4806 }
4807
4808
4809 static void handle_disassoc_cb(struct hostapd_data *hapd,
4810 const struct ieee80211_mgmt *mgmt,
4811 size_t len, int ok)
4812 {
4813 struct sta_info *sta;
4814 if (is_multicast_ether_addr(mgmt->da))
4815 return;
4816 sta = ap_get_sta(hapd, mgmt->da);
4817 if (!sta) {
4818 wpa_printf(MSG_DEBUG, "handle_disassoc_cb: STA " MACSTR
4819 " not found", MAC2STR(mgmt->da));
4820 return;
4821 }
4822 if (ok)
4823 wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged disassoc",
4824 MAC2STR(sta->addr));
4825 else
4826 wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge "
4827 "disassoc", MAC2STR(sta->addr));
4828
4829 ap_sta_disassoc_cb(hapd, sta);
4830 }
4831
4832
4833 static void handle_action_cb(struct hostapd_data *hapd,
4834 const struct ieee80211_mgmt *mgmt,
4835 size_t len, int ok)
4836 {
4837 struct sta_info *sta;
4838 const struct rrm_measurement_report_element *report;
4839
4840 if (is_multicast_ether_addr(mgmt->da))
4841 return;
4842 #ifdef CONFIG_DPP
4843 if (len >= IEEE80211_HDRLEN + 6 &&
4844 mgmt->u.action.category == WLAN_ACTION_PUBLIC &&
4845 mgmt->u.action.u.vs_public_action.action ==
4846 WLAN_PA_VENDOR_SPECIFIC &&
4847 WPA_GET_BE24(mgmt->u.action.u.vs_public_action.oui) ==
4848 OUI_WFA &&
4849 mgmt->u.action.u.vs_public_action.variable[0] ==
4850 DPP_OUI_TYPE) {
4851 const u8 *pos, *end;
4852
4853 pos = &mgmt->u.action.u.vs_public_action.variable[1];
4854 end = ((const u8 *) mgmt) + len;
4855 hostapd_dpp_tx_status(hapd, mgmt->da, pos, end - pos, ok);
4856 return;
4857 }
4858 if (len >= IEEE80211_HDRLEN + 2 &&
4859 mgmt->u.action.category == WLAN_ACTION_PUBLIC &&
4860 (mgmt->u.action.u.public_action.action ==
4861 WLAN_PA_GAS_INITIAL_REQ ||
4862 mgmt->u.action.u.public_action.action ==
4863 WLAN_PA_GAS_COMEBACK_REQ)) {
4864 const u8 *pos, *end;
4865
4866 pos = mgmt->u.action.u.public_action.variable;
4867 end = ((const u8 *) mgmt) + len;
4868 gas_query_ap_tx_status(hapd->gas, mgmt->da, pos, end - pos, ok);
4869 return;
4870 }
4871 #endif /* CONFIG_DPP */
4872 sta = ap_get_sta(hapd, mgmt->da);
4873 if (!sta) {
4874 wpa_printf(MSG_DEBUG, "handle_action_cb: STA " MACSTR
4875 " not found", MAC2STR(mgmt->da));
4876 return;
4877 }
4878
4879 if (len < 24 + 5 + sizeof(*report))
4880 return;
4881 report = (const struct rrm_measurement_report_element *)
4882 &mgmt->u.action.u.rrm.variable[2];
4883 if (mgmt->u.action.category == WLAN_ACTION_RADIO_MEASUREMENT &&
4884 mgmt->u.action.u.rrm.action == WLAN_RRM_RADIO_MEASUREMENT_REQUEST &&
4885 report->eid == WLAN_EID_MEASURE_REQUEST &&
4886 report->len >= 3 &&
4887 report->type == MEASURE_TYPE_BEACON)
4888 hostapd_rrm_beacon_req_tx_status(hapd, mgmt, len, ok);
4889 }
4890
4891
4892 /**
4893 * ieee802_11_mgmt_cb - Process management frame TX status callback
4894 * @hapd: hostapd BSS data structure (the BSS from which the management frame
4895 * was sent from)
4896 * @buf: management frame data (starting from IEEE 802.11 header)
4897 * @len: length of frame data in octets
4898 * @stype: management frame subtype from frame control field
4899 * @ok: Whether the frame was ACK'ed
4900 */
4901 void ieee802_11_mgmt_cb(struct hostapd_data *hapd, const u8 *buf, size_t len,
4902 u16 stype, int ok)
4903 {
4904 const struct ieee80211_mgmt *mgmt;
4905 mgmt = (const struct ieee80211_mgmt *) buf;
4906
4907 #ifdef CONFIG_TESTING_OPTIONS
4908 if (hapd->ext_mgmt_frame_handling) {
4909 size_t hex_len = 2 * len + 1;
4910 char *hex = os_malloc(hex_len);
4911
4912 if (hex) {
4913 wpa_snprintf_hex(hex, hex_len, buf, len);
4914 wpa_msg(hapd->msg_ctx, MSG_INFO,
4915 "MGMT-TX-STATUS stype=%u ok=%d buf=%s",
4916 stype, ok, hex);
4917 os_free(hex);
4918 }
4919 return;
4920 }
4921 #endif /* CONFIG_TESTING_OPTIONS */
4922
4923 switch (stype) {
4924 case WLAN_FC_STYPE_AUTH:
4925 wpa_printf(MSG_DEBUG, "mgmt::auth cb");
4926 handle_auth_cb(hapd, mgmt, len, ok);
4927 break;
4928 case WLAN_FC_STYPE_ASSOC_RESP:
4929 wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb");
4930 handle_assoc_cb(hapd, mgmt, len, 0, ok);
4931 break;
4932 case WLAN_FC_STYPE_REASSOC_RESP:
4933 wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb");
4934 handle_assoc_cb(hapd, mgmt, len, 1, ok);
4935 break;
4936 case WLAN_FC_STYPE_PROBE_RESP:
4937 wpa_printf(MSG_EXCESSIVE, "mgmt::proberesp cb ok=%d", ok);
4938 break;
4939 case WLAN_FC_STYPE_DEAUTH:
4940 wpa_printf(MSG_DEBUG, "mgmt::deauth cb");
4941 handle_deauth_cb(hapd, mgmt, len, ok);
4942 break;
4943 case WLAN_FC_STYPE_DISASSOC:
4944 wpa_printf(MSG_DEBUG, "mgmt::disassoc cb");
4945 handle_disassoc_cb(hapd, mgmt, len, ok);
4946 break;
4947 case WLAN_FC_STYPE_ACTION:
4948 wpa_printf(MSG_DEBUG, "mgmt::action cb ok=%d", ok);
4949 handle_action_cb(hapd, mgmt, len, ok);
4950 break;
4951 default:
4952 wpa_printf(MSG_INFO, "unknown mgmt cb frame subtype %d", stype);
4953 break;
4954 }
4955 }
4956
4957
4958 int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
4959 {
4960 /* TODO */
4961 return 0;
4962 }
4963
4964
4965 int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
4966 char *buf, size_t buflen)
4967 {
4968 /* TODO */
4969 return 0;
4970 }
4971
4972
4973 void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr,
4974 const u8 *buf, size_t len, int ack)
4975 {
4976 struct sta_info *sta;
4977 struct hostapd_iface *iface = hapd->iface;
4978
4979 sta = ap_get_sta(hapd, addr);
4980 if (sta == NULL && iface->num_bss > 1) {
4981 size_t j;
4982 for (j = 0; j < iface->num_bss; j++) {
4983 hapd = iface->bss[j];
4984 sta = ap_get_sta(hapd, addr);
4985 if (sta)
4986 break;
4987 }
4988 }
4989 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))
4990 return;
4991 if (sta->flags & WLAN_STA_PENDING_POLL) {
4992 wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
4993 "activity poll", MAC2STR(sta->addr),
4994 ack ? "ACKed" : "did not ACK");
4995 if (ack)
4996 sta->flags &= ~WLAN_STA_PENDING_POLL;
4997 }
4998
4999 ieee802_1x_tx_status(hapd, sta, buf, len, ack);
5000 }
5001
5002
5003 void hostapd_eapol_tx_status(struct hostapd_data *hapd, const u8 *dst,
5004 const u8 *data, size_t len, int ack)
5005 {
5006 struct sta_info *sta;
5007 struct hostapd_iface *iface = hapd->iface;
5008
5009 sta = ap_get_sta(hapd, dst);
5010 if (sta == NULL && iface->num_bss > 1) {
5011 size_t j;
5012 for (j = 0; j < iface->num_bss; j++) {
5013 hapd = iface->bss[j];
5014 sta = ap_get_sta(hapd, dst);
5015 if (sta)
5016 break;
5017 }
5018 }
5019 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
5020 wpa_printf(MSG_DEBUG, "Ignore TX status for Data frame to STA "
5021 MACSTR " that is not currently associated",
5022 MAC2STR(dst));
5023 return;
5024 }
5025
5026 ieee802_1x_eapol_tx_status(hapd, sta, data, len, ack);
5027 }
5028
5029
5030 void hostapd_client_poll_ok(struct hostapd_data *hapd, const u8 *addr)
5031 {
5032 struct sta_info *sta;
5033 struct hostapd_iface *iface = hapd->iface;
5034
5035 sta = ap_get_sta(hapd, addr);
5036 if (sta == NULL && iface->num_bss > 1) {
5037 size_t j;
5038 for (j = 0; j < iface->num_bss; j++) {
5039 hapd = iface->bss[j];
5040 sta = ap_get_sta(hapd, addr);
5041 if (sta)
5042 break;
5043 }
5044 }
5045 if (sta == NULL)
5046 return;
5047 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_POLL_OK MACSTR,
5048 MAC2STR(sta->addr));
5049 if (!(sta->flags & WLAN_STA_PENDING_POLL))
5050 return;
5051
5052 wpa_printf(MSG_DEBUG, "STA " MACSTR " ACKed pending "
5053 "activity poll", MAC2STR(sta->addr));
5054 sta->flags &= ~WLAN_STA_PENDING_POLL;
5055 }
5056
5057
5058 void ieee802_11_rx_from_unknown(struct hostapd_data *hapd, const u8 *src,
5059 int wds)
5060 {
5061 struct sta_info *sta;
5062
5063 sta = ap_get_sta(hapd, src);
5064 if (sta &&
5065 ((sta->flags & WLAN_STA_ASSOC) ||
5066 ((sta->flags & WLAN_STA_ASSOC_REQ_OK) && wds))) {
5067 if (!hapd->conf->wds_sta)
5068 return;
5069
5070 if ((sta->flags & (WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK)) ==
5071 WLAN_STA_ASSOC_REQ_OK) {
5072 wpa_printf(MSG_DEBUG,
5073 "Postpone 4-address WDS mode enabling for STA "
5074 MACSTR " since TX status for AssocResp is not yet known",
5075 MAC2STR(sta->addr));
5076 sta->pending_wds_enable = 1;
5077 return;
5078 }
5079
5080 if (wds && !(sta->flags & WLAN_STA_WDS)) {
5081 int ret;
5082 char ifname_wds[IFNAMSIZ + 1];
5083
5084 wpa_printf(MSG_DEBUG, "Enable 4-address WDS mode for "
5085 "STA " MACSTR " (aid %u)",
5086 MAC2STR(sta->addr), sta->aid);
5087 sta->flags |= WLAN_STA_WDS;
5088 ret = hostapd_set_wds_sta(hapd, ifname_wds,
5089 sta->addr, sta->aid, 1);
5090 if (!ret)
5091 hostapd_set_wds_encryption(hapd, sta,
5092 ifname_wds);
5093 }
5094 return;
5095 }
5096
5097 wpa_printf(MSG_DEBUG, "Data/PS-poll frame from not associated STA "
5098 MACSTR, MAC2STR(src));
5099 if (is_multicast_ether_addr(src)) {
5100 /* Broadcast bit set in SA?! Ignore the frame silently. */
5101 return;
5102 }
5103
5104 if (sta && (sta->flags & WLAN_STA_ASSOC_REQ_OK)) {
5105 wpa_printf(MSG_DEBUG, "Association Response to the STA has "
5106 "already been sent, but no TX status yet known - "
5107 "ignore Class 3 frame issue with " MACSTR,
5108 MAC2STR(src));
5109 return;
5110 }
5111
5112 if (sta && (sta->flags & WLAN_STA_AUTH))
5113 hostapd_drv_sta_disassoc(
5114 hapd, src,
5115 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
5116 else
5117 hostapd_drv_sta_deauth(
5118 hapd, src,
5119 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
5120 }
5121
5122
5123 #endif /* CONFIG_NATIVE_WINDOWS */
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