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VLAN: Avoid access to non-existing interfaces
[thirdparty/hostap.git] / src / ap / ieee802_11.c
1 /*
2 * hostapd / IEEE 802.11 Management
3 * Copyright (c) 2002-2012, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "utils/includes.h"
10
11 #ifndef CONFIG_NATIVE_WINDOWS
12
13 #include "utils/common.h"
14 #include "utils/eloop.h"
15 #include "crypto/crypto.h"
16 #include "crypto/sha256.h"
17 #include "crypto/random.h"
18 #include "drivers/driver.h"
19 #include "common/ieee802_11_defs.h"
20 #include "common/ieee802_11_common.h"
21 #include "common/wpa_ctrl.h"
22 #include "common/sae.h"
23 #include "radius/radius.h"
24 #include "radius/radius_client.h"
25 #include "p2p/p2p.h"
26 #include "wps/wps.h"
27 #include "hostapd.h"
28 #include "beacon.h"
29 #include "ieee802_11_auth.h"
30 #include "sta_info.h"
31 #include "ieee802_1x.h"
32 #include "wpa_auth.h"
33 #include "wmm.h"
34 #include "ap_list.h"
35 #include "accounting.h"
36 #include "ap_config.h"
37 #include "ap_mlme.h"
38 #include "p2p_hostapd.h"
39 #include "ap_drv_ops.h"
40 #include "wnm_ap.h"
41 #include "ieee802_11.h"
42
43
44 u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid)
45 {
46 u8 *pos = eid;
47 int i, num, count;
48
49 if (hapd->iface->current_rates == NULL)
50 return eid;
51
52 *pos++ = WLAN_EID_SUPP_RATES;
53 num = hapd->iface->num_rates;
54 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht)
55 num++;
56 if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht)
57 num++;
58 if (num > 8) {
59 /* rest of the rates are encoded in Extended supported
60 * rates element */
61 num = 8;
62 }
63
64 *pos++ = num;
65 count = 0;
66 for (i = 0, count = 0; i < hapd->iface->num_rates && count < num;
67 i++) {
68 count++;
69 *pos = hapd->iface->current_rates[i].rate / 5;
70 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
71 *pos |= 0x80;
72 pos++;
73 }
74
75 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht && count < 8) {
76 count++;
77 *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY;
78 }
79
80 if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht && count < 8) {
81 count++;
82 *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY;
83 }
84
85 return pos;
86 }
87
88
89 u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid)
90 {
91 u8 *pos = eid;
92 int i, num, count;
93
94 if (hapd->iface->current_rates == NULL)
95 return eid;
96
97 num = hapd->iface->num_rates;
98 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht)
99 num++;
100 if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht)
101 num++;
102 if (num <= 8)
103 return eid;
104 num -= 8;
105
106 *pos++ = WLAN_EID_EXT_SUPP_RATES;
107 *pos++ = num;
108 count = 0;
109 for (i = 0, count = 0; i < hapd->iface->num_rates && count < num + 8;
110 i++) {
111 count++;
112 if (count <= 8)
113 continue; /* already in SuppRates IE */
114 *pos = hapd->iface->current_rates[i].rate / 5;
115 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
116 *pos |= 0x80;
117 pos++;
118 }
119
120 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht) {
121 count++;
122 if (count > 8)
123 *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY;
124 }
125
126 if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht) {
127 count++;
128 if (count > 8)
129 *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY;
130 }
131
132 return pos;
133 }
134
135
136 u16 hostapd_own_capab_info(struct hostapd_data *hapd, struct sta_info *sta,
137 int probe)
138 {
139 int capab = WLAN_CAPABILITY_ESS;
140 int privacy;
141
142 if (hapd->iface->num_sta_no_short_preamble == 0 &&
143 hapd->iconf->preamble == SHORT_PREAMBLE)
144 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
145
146 privacy = hapd->conf->ssid.wep.keys_set;
147
148 if (hapd->conf->ieee802_1x &&
149 (hapd->conf->default_wep_key_len ||
150 hapd->conf->individual_wep_key_len))
151 privacy = 1;
152
153 if (hapd->conf->wpa)
154 privacy = 1;
155
156 if (sta) {
157 int policy, def_klen;
158 if (probe && sta->ssid_probe) {
159 policy = sta->ssid_probe->security_policy;
160 def_klen = sta->ssid_probe->wep.default_len;
161 } else {
162 policy = sta->ssid->security_policy;
163 def_klen = sta->ssid->wep.default_len;
164 }
165 privacy = policy != SECURITY_PLAINTEXT;
166 if (policy == SECURITY_IEEE_802_1X && def_klen == 0)
167 privacy = 0;
168 }
169
170 if (privacy)
171 capab |= WLAN_CAPABILITY_PRIVACY;
172
173 if (hapd->iface->current_mode &&
174 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G &&
175 hapd->iface->num_sta_no_short_slot_time == 0)
176 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
177
178 return capab;
179 }
180
181
182 void ieee802_11_print_ssid(char *buf, const u8 *ssid, u8 len)
183 {
184 int i;
185 if (len > HOSTAPD_MAX_SSID_LEN)
186 len = HOSTAPD_MAX_SSID_LEN;
187 for (i = 0; i < len; i++) {
188 if (ssid[i] >= 32 && ssid[i] < 127)
189 buf[i] = ssid[i];
190 else
191 buf[i] = '.';
192 }
193 buf[len] = '\0';
194 }
195
196
197 static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta,
198 u16 auth_transaction, const u8 *challenge,
199 int iswep)
200 {
201 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
202 HOSTAPD_LEVEL_DEBUG,
203 "authentication (shared key, transaction %d)",
204 auth_transaction);
205
206 if (auth_transaction == 1) {
207 if (!sta->challenge) {
208 /* Generate a pseudo-random challenge */
209 u8 key[8];
210 struct os_time now;
211 int r;
212 sta->challenge = os_zalloc(WLAN_AUTH_CHALLENGE_LEN);
213 if (sta->challenge == NULL)
214 return WLAN_STATUS_UNSPECIFIED_FAILURE;
215
216 os_get_time(&now);
217 r = os_random();
218 os_memcpy(key, &now.sec, 4);
219 os_memcpy(key + 4, &r, 4);
220 rc4_skip(key, sizeof(key), 0,
221 sta->challenge, WLAN_AUTH_CHALLENGE_LEN);
222 }
223 return 0;
224 }
225
226 if (auth_transaction != 3)
227 return WLAN_STATUS_UNSPECIFIED_FAILURE;
228
229 /* Transaction 3 */
230 if (!iswep || !sta->challenge || !challenge ||
231 os_memcmp(sta->challenge, challenge, WLAN_AUTH_CHALLENGE_LEN)) {
232 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
233 HOSTAPD_LEVEL_INFO,
234 "shared key authentication - invalid "
235 "challenge-response");
236 return WLAN_STATUS_CHALLENGE_FAIL;
237 }
238
239 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
240 HOSTAPD_LEVEL_DEBUG,
241 "authentication OK (shared key)");
242 #ifdef IEEE80211_REQUIRE_AUTH_ACK
243 /* Station will be marked authenticated if it ACKs the
244 * authentication reply. */
245 #else
246 sta->flags |= WLAN_STA_AUTH;
247 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
248 #endif
249 os_free(sta->challenge);
250 sta->challenge = NULL;
251
252 return 0;
253 }
254
255
256 static void send_auth_reply(struct hostapd_data *hapd,
257 const u8 *dst, const u8 *bssid,
258 u16 auth_alg, u16 auth_transaction, u16 resp,
259 const u8 *ies, size_t ies_len)
260 {
261 struct ieee80211_mgmt *reply;
262 u8 *buf;
263 size_t rlen;
264
265 rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth) + ies_len;
266 buf = os_zalloc(rlen);
267 if (buf == NULL)
268 return;
269
270 reply = (struct ieee80211_mgmt *) buf;
271 reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
272 WLAN_FC_STYPE_AUTH);
273 os_memcpy(reply->da, dst, ETH_ALEN);
274 os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
275 os_memcpy(reply->bssid, bssid, ETH_ALEN);
276
277 reply->u.auth.auth_alg = host_to_le16(auth_alg);
278 reply->u.auth.auth_transaction = host_to_le16(auth_transaction);
279 reply->u.auth.status_code = host_to_le16(resp);
280
281 if (ies && ies_len)
282 os_memcpy(reply->u.auth.variable, ies, ies_len);
283
284 wpa_printf(MSG_DEBUG, "authentication reply: STA=" MACSTR
285 " auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu)",
286 MAC2STR(dst), auth_alg, auth_transaction,
287 resp, (unsigned long) ies_len);
288 if (hostapd_drv_send_mlme(hapd, reply, rlen, 0) < 0)
289 perror("send_auth_reply: send");
290
291 os_free(buf);
292 }
293
294
295 #ifdef CONFIG_IEEE80211R
296 static void handle_auth_ft_finish(void *ctx, const u8 *dst, const u8 *bssid,
297 u16 auth_transaction, u16 status,
298 const u8 *ies, size_t ies_len)
299 {
300 struct hostapd_data *hapd = ctx;
301 struct sta_info *sta;
302
303 send_auth_reply(hapd, dst, bssid, WLAN_AUTH_FT, auth_transaction,
304 status, ies, ies_len);
305
306 if (status != WLAN_STATUS_SUCCESS)
307 return;
308
309 sta = ap_get_sta(hapd, dst);
310 if (sta == NULL)
311 return;
312
313 hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211,
314 HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)");
315 sta->flags |= WLAN_STA_AUTH;
316 mlme_authenticate_indication(hapd, sta);
317 }
318 #endif /* CONFIG_IEEE80211R */
319
320
321 #ifdef CONFIG_SAE
322
323 static struct wpabuf * auth_process_sae_commit(struct hostapd_data *hapd,
324 struct sta_info *sta)
325 {
326 struct wpabuf *buf;
327
328 if (hapd->conf->ssid.wpa_passphrase == NULL) {
329 wpa_printf(MSG_DEBUG, "SAE: No password available");
330 return NULL;
331 }
332
333 if (sae_prepare_commit(hapd->own_addr, sta->addr,
334 (u8 *) hapd->conf->ssid.wpa_passphrase,
335 os_strlen(hapd->conf->ssid.wpa_passphrase),
336 sta->sae) < 0) {
337 wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE");
338 return NULL;
339 }
340
341 if (sae_process_commit(sta->sae) < 0) {
342 wpa_printf(MSG_DEBUG, "SAE: Failed to process peer commit");
343 return NULL;
344 }
345
346 buf = wpabuf_alloc(SAE_COMMIT_MAX_LEN);
347 if (buf == NULL)
348 return NULL;
349 sae_write_commit(sta->sae, buf, NULL);
350
351 return buf;
352 }
353
354
355 static struct wpabuf * auth_build_sae_confirm(struct hostapd_data *hapd,
356 struct sta_info *sta)
357 {
358 struct wpabuf *buf;
359
360 buf = wpabuf_alloc(SAE_CONFIRM_MAX_LEN);
361 if (buf == NULL)
362 return NULL;
363
364 sae_write_confirm(sta->sae, buf);
365
366 return buf;
367 }
368
369
370 static int use_sae_anti_clogging(struct hostapd_data *hapd)
371 {
372 struct sta_info *sta;
373 unsigned int open = 0;
374
375 if (hapd->conf->sae_anti_clogging_threshold == 0)
376 return 1;
377
378 for (sta = hapd->sta_list; sta; sta = sta->next) {
379 if (!sta->sae)
380 continue;
381 if (sta->sae->state != SAE_COMMITTED &&
382 sta->sae->state != SAE_CONFIRMED)
383 continue;
384 open++;
385 if (open >= hapd->conf->sae_anti_clogging_threshold)
386 return 1;
387 }
388
389 return 0;
390 }
391
392
393 static int check_sae_token(struct hostapd_data *hapd, const u8 *addr,
394 const u8 *token, size_t token_len)
395 {
396 u8 mac[SHA256_MAC_LEN];
397
398 if (token_len != SHA256_MAC_LEN)
399 return -1;
400 if (hmac_sha256(hapd->sae_token_key, sizeof(hapd->sae_token_key),
401 addr, ETH_ALEN, mac) < 0 ||
402 os_memcmp(token, mac, SHA256_MAC_LEN) != 0)
403 return -1;
404
405 return 0;
406 }
407
408
409 static struct wpabuf * auth_build_token_req(struct hostapd_data *hapd,
410 const u8 *addr)
411 {
412 struct wpabuf *buf;
413 u8 *token;
414 struct os_time t;
415
416 os_get_time(&t);
417 if (hapd->last_sae_token_key_update == 0 ||
418 t.sec > hapd->last_sae_token_key_update + 60) {
419 if (random_get_bytes(hapd->sae_token_key,
420 sizeof(hapd->sae_token_key)) < 0)
421 return NULL;
422 wpa_hexdump(MSG_DEBUG, "SAE: Updated token key",
423 hapd->sae_token_key, sizeof(hapd->sae_token_key));
424 hapd->last_sae_token_key_update = t.sec;
425 }
426
427 buf = wpabuf_alloc(SHA256_MAC_LEN);
428 if (buf == NULL)
429 return NULL;
430
431 token = wpabuf_put(buf, SHA256_MAC_LEN);
432 hmac_sha256(hapd->sae_token_key, sizeof(hapd->sae_token_key),
433 addr, ETH_ALEN, token);
434
435 return buf;
436 }
437
438
439 static void handle_auth_sae(struct hostapd_data *hapd, struct sta_info *sta,
440 const struct ieee80211_mgmt *mgmt, size_t len,
441 u8 auth_transaction)
442 {
443 u16 resp = WLAN_STATUS_SUCCESS;
444 struct wpabuf *data = NULL;
445
446 if (!sta->sae) {
447 if (auth_transaction != 1)
448 return;
449 sta->sae = os_zalloc(sizeof(*sta->sae));
450 if (sta->sae == NULL)
451 return;
452 sta->sae->state = SAE_NOTHING;
453 }
454
455 if (auth_transaction == 1) {
456 const u8 *token = NULL;
457 size_t token_len = 0;
458 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
459 HOSTAPD_LEVEL_DEBUG,
460 "start SAE authentication (RX commit)");
461 resp = sae_parse_commit(sta->sae, mgmt->u.auth.variable,
462 ((const u8 *) mgmt) + len -
463 mgmt->u.auth.variable, &token,
464 &token_len, hapd->conf->sae_groups);
465 if (token && check_sae_token(hapd, sta->addr, token, token_len)
466 < 0) {
467 wpa_printf(MSG_DEBUG, "SAE: Drop commit message with "
468 "incorrect token from " MACSTR,
469 MAC2STR(sta->addr));
470 return;
471 }
472
473 if (resp == WLAN_STATUS_SUCCESS) {
474 if (!token && use_sae_anti_clogging(hapd)) {
475 wpa_printf(MSG_DEBUG, "SAE: Request anti-"
476 "clogging token from " MACSTR,
477 MAC2STR(sta->addr));
478 data = auth_build_token_req(hapd, sta->addr);
479 resp = WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ;
480 } else {
481 data = auth_process_sae_commit(hapd, sta);
482 if (data == NULL)
483 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
484 else
485 sta->sae->state = SAE_COMMITTED;
486 }
487 }
488 } else if (auth_transaction == 2) {
489 if (sta->sae->state != SAE_COMMITTED) {
490 hostapd_logger(hapd, sta->addr,
491 HOSTAPD_MODULE_IEEE80211,
492 HOSTAPD_LEVEL_DEBUG,
493 "SAE confirm before commit");
494 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
495 }
496 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
497 HOSTAPD_LEVEL_DEBUG,
498 "SAE authentication (RX confirm)");
499 if (sae_check_confirm(sta->sae, mgmt->u.auth.variable,
500 ((u8 *) mgmt) + len -
501 mgmt->u.auth.variable) < 0) {
502 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
503 } else {
504 resp = WLAN_STATUS_SUCCESS;
505 sta->flags |= WLAN_STA_AUTH;
506 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
507 sta->auth_alg = WLAN_AUTH_SAE;
508 mlme_authenticate_indication(hapd, sta);
509
510 data = auth_build_sae_confirm(hapd, sta);
511 if (data == NULL)
512 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
513 else {
514 sta->sae->state = SAE_ACCEPTED;
515 sae_clear_temp_data(sta->sae);
516 }
517 }
518 } else {
519 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
520 HOSTAPD_LEVEL_DEBUG,
521 "unexpected SAE authentication transaction %u",
522 auth_transaction);
523 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
524 }
525
526 sta->auth_alg = WLAN_AUTH_SAE;
527
528 send_auth_reply(hapd, mgmt->sa, mgmt->bssid, WLAN_AUTH_SAE,
529 auth_transaction, resp,
530 data ? wpabuf_head(data) : (u8 *) "",
531 data ? wpabuf_len(data) : 0);
532 wpabuf_free(data);
533 }
534 #endif /* CONFIG_SAE */
535
536
537 static void handle_auth(struct hostapd_data *hapd,
538 const struct ieee80211_mgmt *mgmt, size_t len)
539 {
540 u16 auth_alg, auth_transaction, status_code;
541 u16 resp = WLAN_STATUS_SUCCESS;
542 struct sta_info *sta = NULL;
543 int res;
544 u16 fc;
545 const u8 *challenge = NULL;
546 u32 session_timeout, acct_interim_interval;
547 int vlan_id = 0;
548 struct hostapd_sta_wpa_psk_short *psk = NULL;
549 u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN];
550 size_t resp_ies_len = 0;
551 char *identity = NULL;
552 char *radius_cui = NULL;
553
554 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
555 printf("handle_auth - too short payload (len=%lu)\n",
556 (unsigned long) len);
557 return;
558 }
559
560 #ifdef CONFIG_TESTING_OPTIONS
561 if (hapd->iconf->ignore_auth_probability > 0.0d &&
562 drand48() < hapd->iconf->ignore_auth_probability) {
563 wpa_printf(MSG_INFO,
564 "TESTING: ignoring auth frame from " MACSTR,
565 MAC2STR(mgmt->sa));
566 return;
567 }
568 #endif /* CONFIG_TESTING_OPTIONS */
569
570 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
571 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
572 status_code = le_to_host16(mgmt->u.auth.status_code);
573 fc = le_to_host16(mgmt->frame_control);
574
575 if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) +
576 2 + WLAN_AUTH_CHALLENGE_LEN &&
577 mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE &&
578 mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN)
579 challenge = &mgmt->u.auth.variable[2];
580
581 wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d "
582 "auth_transaction=%d status_code=%d wep=%d%s",
583 MAC2STR(mgmt->sa), auth_alg, auth_transaction,
584 status_code, !!(fc & WLAN_FC_ISWEP),
585 challenge ? " challenge" : "");
586
587 if (hapd->tkip_countermeasures) {
588 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
589 goto fail;
590 }
591
592 if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) &&
593 auth_alg == WLAN_AUTH_OPEN) ||
594 #ifdef CONFIG_IEEE80211R
595 (hapd->conf->wpa && wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt) &&
596 auth_alg == WLAN_AUTH_FT) ||
597 #endif /* CONFIG_IEEE80211R */
598 #ifdef CONFIG_SAE
599 (hapd->conf->wpa && wpa_key_mgmt_sae(hapd->conf->wpa_key_mgmt) &&
600 auth_alg == WLAN_AUTH_SAE) ||
601 #endif /* CONFIG_SAE */
602 ((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) &&
603 auth_alg == WLAN_AUTH_SHARED_KEY))) {
604 printf("Unsupported authentication algorithm (%d)\n",
605 auth_alg);
606 resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
607 goto fail;
608 }
609
610 if (!(auth_transaction == 1 || auth_alg == WLAN_AUTH_SAE ||
611 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) {
612 printf("Unknown authentication transaction number (%d)\n",
613 auth_transaction);
614 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
615 goto fail;
616 }
617
618 if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) {
619 printf("Station " MACSTR " not allowed to authenticate.\n",
620 MAC2STR(mgmt->sa));
621 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
622 goto fail;
623 }
624
625 res = hostapd_allowed_address(hapd, mgmt->sa, (u8 *) mgmt, len,
626 &session_timeout,
627 &acct_interim_interval, &vlan_id,
628 &psk, &identity, &radius_cui);
629
630 if (res == HOSTAPD_ACL_REJECT) {
631 printf("Station " MACSTR " not allowed to authenticate.\n",
632 MAC2STR(mgmt->sa));
633 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
634 goto fail;
635 }
636 if (res == HOSTAPD_ACL_PENDING) {
637 wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR
638 " waiting for an external authentication",
639 MAC2STR(mgmt->sa));
640 /* Authentication code will re-send the authentication frame
641 * after it has received (and cached) information from the
642 * external source. */
643 return;
644 }
645
646 sta = ap_sta_add(hapd, mgmt->sa);
647 if (!sta) {
648 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
649 goto fail;
650 }
651
652 if (vlan_id > 0) {
653 if (!hostapd_vlan_id_valid(hapd->conf->vlan, vlan_id)) {
654 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
655 HOSTAPD_LEVEL_INFO, "Invalid VLAN ID "
656 "%d received from RADIUS server",
657 vlan_id);
658 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
659 goto fail;
660 }
661 sta->vlan_id = vlan_id;
662 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
663 HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id);
664 }
665
666 hostapd_free_psk_list(sta->psk);
667 if (hapd->conf->wpa_psk_radius != PSK_RADIUS_IGNORED) {
668 sta->psk = psk;
669 psk = NULL;
670 } else {
671 sta->psk = NULL;
672 }
673
674 sta->identity = identity;
675 identity = NULL;
676 sta->radius_cui = radius_cui;
677 radius_cui = NULL;
678
679 sta->flags &= ~WLAN_STA_PREAUTH;
680 ieee802_1x_notify_pre_auth(sta->eapol_sm, 0);
681
682 if (hapd->conf->acct_interim_interval == 0 && acct_interim_interval)
683 sta->acct_interim_interval = acct_interim_interval;
684 if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT)
685 ap_sta_session_timeout(hapd, sta, session_timeout);
686 else
687 ap_sta_no_session_timeout(hapd, sta);
688
689 switch (auth_alg) {
690 case WLAN_AUTH_OPEN:
691 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
692 HOSTAPD_LEVEL_DEBUG,
693 "authentication OK (open system)");
694 #ifdef IEEE80211_REQUIRE_AUTH_ACK
695 /* Station will be marked authenticated if it ACKs the
696 * authentication reply. */
697 #else
698 sta->flags |= WLAN_STA_AUTH;
699 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
700 sta->auth_alg = WLAN_AUTH_OPEN;
701 mlme_authenticate_indication(hapd, sta);
702 #endif
703 break;
704 case WLAN_AUTH_SHARED_KEY:
705 resp = auth_shared_key(hapd, sta, auth_transaction, challenge,
706 fc & WLAN_FC_ISWEP);
707 sta->auth_alg = WLAN_AUTH_SHARED_KEY;
708 mlme_authenticate_indication(hapd, sta);
709 if (sta->challenge && auth_transaction == 1) {
710 resp_ies[0] = WLAN_EID_CHALLENGE;
711 resp_ies[1] = WLAN_AUTH_CHALLENGE_LEN;
712 os_memcpy(resp_ies + 2, sta->challenge,
713 WLAN_AUTH_CHALLENGE_LEN);
714 resp_ies_len = 2 + WLAN_AUTH_CHALLENGE_LEN;
715 }
716 break;
717 #ifdef CONFIG_IEEE80211R
718 case WLAN_AUTH_FT:
719 sta->auth_alg = WLAN_AUTH_FT;
720 if (sta->wpa_sm == NULL)
721 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
722 sta->addr);
723 if (sta->wpa_sm == NULL) {
724 wpa_printf(MSG_DEBUG, "FT: Failed to initialize WPA "
725 "state machine");
726 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
727 goto fail;
728 }
729 wpa_ft_process_auth(sta->wpa_sm, mgmt->bssid,
730 auth_transaction, mgmt->u.auth.variable,
731 len - IEEE80211_HDRLEN -
732 sizeof(mgmt->u.auth),
733 handle_auth_ft_finish, hapd);
734 /* handle_auth_ft_finish() callback will complete auth. */
735 return;
736 #endif /* CONFIG_IEEE80211R */
737 #ifdef CONFIG_SAE
738 case WLAN_AUTH_SAE:
739 handle_auth_sae(hapd, sta, mgmt, len, auth_transaction);
740 return;
741 #endif /* CONFIG_SAE */
742 }
743
744 fail:
745 os_free(identity);
746 os_free(radius_cui);
747 hostapd_free_psk_list(psk);
748
749 send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg,
750 auth_transaction + 1, resp, resp_ies, resp_ies_len);
751 }
752
753
754 static int hostapd_get_aid(struct hostapd_data *hapd, struct sta_info *sta)
755 {
756 int i, j = 32, aid;
757
758 /* get a unique AID */
759 if (sta->aid > 0) {
760 wpa_printf(MSG_DEBUG, " old AID %d", sta->aid);
761 return 0;
762 }
763
764 for (i = 0; i < AID_WORDS; i++) {
765 if (hapd->sta_aid[i] == (u32) -1)
766 continue;
767 for (j = 0; j < 32; j++) {
768 if (!(hapd->sta_aid[i] & BIT(j)))
769 break;
770 }
771 if (j < 32)
772 break;
773 }
774 if (j == 32)
775 return -1;
776 aid = i * 32 + j + 1;
777 if (aid > 2007)
778 return -1;
779
780 sta->aid = aid;
781 hapd->sta_aid[i] |= BIT(j);
782 wpa_printf(MSG_DEBUG, " new AID %d", sta->aid);
783 return 0;
784 }
785
786
787 static u16 check_ssid(struct hostapd_data *hapd, struct sta_info *sta,
788 const u8 *ssid_ie, size_t ssid_ie_len)
789 {
790 if (ssid_ie == NULL)
791 return WLAN_STATUS_UNSPECIFIED_FAILURE;
792
793 if (ssid_ie_len != hapd->conf->ssid.ssid_len ||
794 os_memcmp(ssid_ie, hapd->conf->ssid.ssid, ssid_ie_len) != 0) {
795 char ssid_txt[33];
796 ieee802_11_print_ssid(ssid_txt, ssid_ie, ssid_ie_len);
797 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
798 HOSTAPD_LEVEL_INFO,
799 "Station tried to associate with unknown SSID "
800 "'%s'", ssid_txt);
801 return WLAN_STATUS_UNSPECIFIED_FAILURE;
802 }
803
804 return WLAN_STATUS_SUCCESS;
805 }
806
807
808 static u16 check_wmm(struct hostapd_data *hapd, struct sta_info *sta,
809 const u8 *wmm_ie, size_t wmm_ie_len)
810 {
811 sta->flags &= ~WLAN_STA_WMM;
812 sta->qosinfo = 0;
813 if (wmm_ie && hapd->conf->wmm_enabled) {
814 struct wmm_information_element *wmm;
815
816 if (!hostapd_eid_wmm_valid(hapd, wmm_ie, wmm_ie_len)) {
817 hostapd_logger(hapd, sta->addr,
818 HOSTAPD_MODULE_WPA,
819 HOSTAPD_LEVEL_DEBUG,
820 "invalid WMM element in association "
821 "request");
822 return WLAN_STATUS_UNSPECIFIED_FAILURE;
823 }
824
825 sta->flags |= WLAN_STA_WMM;
826 wmm = (struct wmm_information_element *) wmm_ie;
827 sta->qosinfo = wmm->qos_info;
828 }
829 return WLAN_STATUS_SUCCESS;
830 }
831
832
833 static u16 copy_supp_rates(struct hostapd_data *hapd, struct sta_info *sta,
834 struct ieee802_11_elems *elems)
835 {
836 if (!elems->supp_rates) {
837 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
838 HOSTAPD_LEVEL_DEBUG,
839 "No supported rates element in AssocReq");
840 return WLAN_STATUS_UNSPECIFIED_FAILURE;
841 }
842
843 if (elems->supp_rates_len + elems->ext_supp_rates_len >
844 sizeof(sta->supported_rates)) {
845 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
846 HOSTAPD_LEVEL_DEBUG,
847 "Invalid supported rates element length %d+%d",
848 elems->supp_rates_len,
849 elems->ext_supp_rates_len);
850 return WLAN_STATUS_UNSPECIFIED_FAILURE;
851 }
852
853 sta->supported_rates_len = merge_byte_arrays(
854 sta->supported_rates, sizeof(sta->supported_rates),
855 elems->supp_rates, elems->supp_rates_len,
856 elems->ext_supp_rates, elems->ext_supp_rates_len);
857
858 return WLAN_STATUS_SUCCESS;
859 }
860
861
862 static u16 check_assoc_ies(struct hostapd_data *hapd, struct sta_info *sta,
863 const u8 *ies, size_t ies_len, int reassoc)
864 {
865 struct ieee802_11_elems elems;
866 u16 resp;
867 const u8 *wpa_ie;
868 size_t wpa_ie_len;
869
870 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) {
871 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
872 HOSTAPD_LEVEL_INFO, "Station sent an invalid "
873 "association request");
874 return WLAN_STATUS_UNSPECIFIED_FAILURE;
875 }
876
877 resp = check_ssid(hapd, sta, elems.ssid, elems.ssid_len);
878 if (resp != WLAN_STATUS_SUCCESS)
879 return resp;
880 resp = check_wmm(hapd, sta, elems.wmm, elems.wmm_len);
881 if (resp != WLAN_STATUS_SUCCESS)
882 return resp;
883 resp = copy_supp_rates(hapd, sta, &elems);
884 if (resp != WLAN_STATUS_SUCCESS)
885 return resp;
886 #ifdef CONFIG_IEEE80211N
887 resp = copy_sta_ht_capab(hapd, sta, elems.ht_capabilities,
888 elems.ht_capabilities_len);
889 if (resp != WLAN_STATUS_SUCCESS)
890 return resp;
891 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht &&
892 !(sta->flags & WLAN_STA_HT)) {
893 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
894 HOSTAPD_LEVEL_INFO, "Station does not support "
895 "mandatory HT PHY - reject association");
896 return WLAN_STATUS_ASSOC_DENIED_NO_HT;
897 }
898 #endif /* CONFIG_IEEE80211N */
899
900 #ifdef CONFIG_IEEE80211AC
901 resp = copy_sta_vht_capab(hapd, sta, elems.vht_capabilities,
902 elems.vht_capabilities_len);
903 if (resp != WLAN_STATUS_SUCCESS)
904 return resp;
905 if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht &&
906 !(sta->flags & WLAN_STA_VHT)) {
907 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
908 HOSTAPD_LEVEL_INFO, "Station does not support "
909 "mandatory VHT PHY - reject association");
910 return WLAN_STATUS_UNSPECIFIED_FAILURE;
911 }
912 #endif /* CONFIG_IEEE80211AC */
913
914 if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) {
915 wpa_ie = elems.rsn_ie;
916 wpa_ie_len = elems.rsn_ie_len;
917 } else if ((hapd->conf->wpa & WPA_PROTO_WPA) &&
918 elems.wpa_ie) {
919 wpa_ie = elems.wpa_ie;
920 wpa_ie_len = elems.wpa_ie_len;
921 } else {
922 wpa_ie = NULL;
923 wpa_ie_len = 0;
924 }
925
926 #ifdef CONFIG_WPS
927 sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS | WLAN_STA_WPS2);
928 if (hapd->conf->wps_state && elems.wps_ie) {
929 wpa_printf(MSG_DEBUG, "STA included WPS IE in (Re)Association "
930 "Request - assume WPS is used");
931 sta->flags |= WLAN_STA_WPS;
932 wpabuf_free(sta->wps_ie);
933 sta->wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
934 WPS_IE_VENDOR_TYPE);
935 if (sta->wps_ie && wps_is_20(sta->wps_ie)) {
936 wpa_printf(MSG_DEBUG, "WPS: STA supports WPS 2.0");
937 sta->flags |= WLAN_STA_WPS2;
938 }
939 wpa_ie = NULL;
940 wpa_ie_len = 0;
941 if (sta->wps_ie && wps_validate_assoc_req(sta->wps_ie) < 0) {
942 wpa_printf(MSG_DEBUG, "WPS: Invalid WPS IE in "
943 "(Re)Association Request - reject");
944 return WLAN_STATUS_INVALID_IE;
945 }
946 } else if (hapd->conf->wps_state && wpa_ie == NULL) {
947 wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE in "
948 "(Re)Association Request - possible WPS use");
949 sta->flags |= WLAN_STA_MAYBE_WPS;
950 } else
951 #endif /* CONFIG_WPS */
952 if (hapd->conf->wpa && wpa_ie == NULL) {
953 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
954 HOSTAPD_LEVEL_INFO,
955 "No WPA/RSN IE in association request");
956 return WLAN_STATUS_INVALID_IE;
957 }
958
959 if (hapd->conf->wpa && wpa_ie) {
960 int res;
961 wpa_ie -= 2;
962 wpa_ie_len += 2;
963 if (sta->wpa_sm == NULL)
964 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
965 sta->addr);
966 if (sta->wpa_sm == NULL) {
967 wpa_printf(MSG_WARNING, "Failed to initialize WPA "
968 "state machine");
969 return WLAN_STATUS_UNSPECIFIED_FAILURE;
970 }
971 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
972 wpa_ie, wpa_ie_len,
973 elems.mdie, elems.mdie_len);
974 if (res == WPA_INVALID_GROUP)
975 resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
976 else if (res == WPA_INVALID_PAIRWISE)
977 resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
978 else if (res == WPA_INVALID_AKMP)
979 resp = WLAN_STATUS_AKMP_NOT_VALID;
980 else if (res == WPA_ALLOC_FAIL)
981 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
982 #ifdef CONFIG_IEEE80211W
983 else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION)
984 resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
985 else if (res == WPA_INVALID_MGMT_GROUP_CIPHER)
986 resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
987 #endif /* CONFIG_IEEE80211W */
988 else if (res == WPA_INVALID_MDIE)
989 resp = WLAN_STATUS_INVALID_MDIE;
990 else if (res != WPA_IE_OK)
991 resp = WLAN_STATUS_INVALID_IE;
992 if (resp != WLAN_STATUS_SUCCESS)
993 return resp;
994 #ifdef CONFIG_IEEE80211W
995 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
996 sta->sa_query_count > 0)
997 ap_check_sa_query_timeout(hapd, sta);
998 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
999 (!reassoc || sta->auth_alg != WLAN_AUTH_FT)) {
1000 /*
1001 * STA has already been associated with MFP and SA
1002 * Query timeout has not been reached. Reject the
1003 * association attempt temporarily and start SA Query,
1004 * if one is not pending.
1005 */
1006
1007 if (sta->sa_query_count == 0)
1008 ap_sta_start_sa_query(hapd, sta);
1009
1010 return WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;
1011 }
1012
1013 if (wpa_auth_uses_mfp(sta->wpa_sm))
1014 sta->flags |= WLAN_STA_MFP;
1015 else
1016 sta->flags &= ~WLAN_STA_MFP;
1017 #endif /* CONFIG_IEEE80211W */
1018
1019 #ifdef CONFIG_IEEE80211R
1020 if (sta->auth_alg == WLAN_AUTH_FT) {
1021 if (!reassoc) {
1022 wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried "
1023 "to use association (not "
1024 "re-association) with FT auth_alg",
1025 MAC2STR(sta->addr));
1026 return WLAN_STATUS_UNSPECIFIED_FAILURE;
1027 }
1028
1029 resp = wpa_ft_validate_reassoc(sta->wpa_sm, ies,
1030 ies_len);
1031 if (resp != WLAN_STATUS_SUCCESS)
1032 return resp;
1033 }
1034 #endif /* CONFIG_IEEE80211R */
1035
1036 #ifdef CONFIG_SAE
1037 if (wpa_auth_uses_sae(sta->wpa_sm) &&
1038 sta->auth_alg != WLAN_AUTH_SAE) {
1039 wpa_printf(MSG_DEBUG, "SAE: " MACSTR " tried to use "
1040 "SAE AKM after non-SAE auth_alg %u",
1041 MAC2STR(sta->addr), sta->auth_alg);
1042 return WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
1043 }
1044 #endif /* CONFIG_SAE */
1045
1046 #ifdef CONFIG_IEEE80211N
1047 if ((sta->flags & (WLAN_STA_HT | WLAN_STA_VHT)) &&
1048 wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) {
1049 hostapd_logger(hapd, sta->addr,
1050 HOSTAPD_MODULE_IEEE80211,
1051 HOSTAPD_LEVEL_INFO,
1052 "Station tried to use TKIP with HT "
1053 "association");
1054 return WLAN_STATUS_CIPHER_REJECTED_PER_POLICY;
1055 }
1056 #endif /* CONFIG_IEEE80211N */
1057 } else
1058 wpa_auth_sta_no_wpa(sta->wpa_sm);
1059
1060 #ifdef CONFIG_P2P
1061 if (elems.p2p) {
1062 wpabuf_free(sta->p2p_ie);
1063 sta->p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
1064 P2P_IE_VENDOR_TYPE);
1065
1066 } else {
1067 wpabuf_free(sta->p2p_ie);
1068 sta->p2p_ie = NULL;
1069 }
1070
1071 p2p_group_notif_assoc(hapd->p2p_group, sta->addr, ies, ies_len);
1072 #endif /* CONFIG_P2P */
1073
1074 #ifdef CONFIG_HS20
1075 wpabuf_free(sta->hs20_ie);
1076 if (elems.hs20 && elems.hs20_len > 4) {
1077 sta->hs20_ie = wpabuf_alloc_copy(elems.hs20 + 4,
1078 elems.hs20_len - 4);
1079 } else
1080 sta->hs20_ie = NULL;
1081 #endif /* CONFIG_HS20 */
1082
1083 return WLAN_STATUS_SUCCESS;
1084 }
1085
1086
1087 static void send_deauth(struct hostapd_data *hapd, const u8 *addr,
1088 u16 reason_code)
1089 {
1090 int send_len;
1091 struct ieee80211_mgmt reply;
1092
1093 os_memset(&reply, 0, sizeof(reply));
1094 reply.frame_control =
1095 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_DEAUTH);
1096 os_memcpy(reply.da, addr, ETH_ALEN);
1097 os_memcpy(reply.sa, hapd->own_addr, ETH_ALEN);
1098 os_memcpy(reply.bssid, hapd->own_addr, ETH_ALEN);
1099
1100 send_len = IEEE80211_HDRLEN + sizeof(reply.u.deauth);
1101 reply.u.deauth.reason_code = host_to_le16(reason_code);
1102
1103 if (hostapd_drv_send_mlme(hapd, &reply, send_len, 0) < 0)
1104 wpa_printf(MSG_INFO, "Failed to send deauth: %s",
1105 strerror(errno));
1106 }
1107
1108
1109 static void send_assoc_resp(struct hostapd_data *hapd, struct sta_info *sta,
1110 u16 status_code, int reassoc, const u8 *ies,
1111 size_t ies_len)
1112 {
1113 int send_len;
1114 u8 buf[sizeof(struct ieee80211_mgmt) + 1024];
1115 struct ieee80211_mgmt *reply;
1116 u8 *p;
1117
1118 os_memset(buf, 0, sizeof(buf));
1119 reply = (struct ieee80211_mgmt *) buf;
1120 reply->frame_control =
1121 IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1122 (reassoc ? WLAN_FC_STYPE_REASSOC_RESP :
1123 WLAN_FC_STYPE_ASSOC_RESP));
1124 os_memcpy(reply->da, sta->addr, ETH_ALEN);
1125 os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
1126 os_memcpy(reply->bssid, hapd->own_addr, ETH_ALEN);
1127
1128 send_len = IEEE80211_HDRLEN;
1129 send_len += sizeof(reply->u.assoc_resp);
1130 reply->u.assoc_resp.capab_info =
1131 host_to_le16(hostapd_own_capab_info(hapd, sta, 0));
1132 reply->u.assoc_resp.status_code = host_to_le16(status_code);
1133 reply->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0)
1134 | BIT(14) | BIT(15));
1135 /* Supported rates */
1136 p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable);
1137 /* Extended supported rates */
1138 p = hostapd_eid_ext_supp_rates(hapd, p);
1139
1140 #ifdef CONFIG_IEEE80211R
1141 if (status_code == WLAN_STATUS_SUCCESS) {
1142 /* IEEE 802.11r: Mobility Domain Information, Fast BSS
1143 * Transition Information, RSN, [RIC Response] */
1144 p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p,
1145 buf + sizeof(buf) - p,
1146 sta->auth_alg, ies, ies_len);
1147 }
1148 #endif /* CONFIG_IEEE80211R */
1149
1150 #ifdef CONFIG_IEEE80211W
1151 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY)
1152 p = hostapd_eid_assoc_comeback_time(hapd, sta, p);
1153 #endif /* CONFIG_IEEE80211W */
1154
1155 #ifdef CONFIG_IEEE80211N
1156 p = hostapd_eid_ht_capabilities(hapd, p);
1157 p = hostapd_eid_ht_operation(hapd, p);
1158 #endif /* CONFIG_IEEE80211N */
1159
1160 #ifdef CONFIG_IEEE80211AC
1161 p = hostapd_eid_vht_capabilities(hapd, p);
1162 p = hostapd_eid_vht_operation(hapd, p);
1163 #endif /* CONFIG_IEEE80211AC */
1164
1165 p = hostapd_eid_ext_capab(hapd, p);
1166 p = hostapd_eid_bss_max_idle_period(hapd, p);
1167
1168 if (sta->flags & WLAN_STA_WMM)
1169 p = hostapd_eid_wmm(hapd, p);
1170
1171 #ifdef CONFIG_WPS
1172 if ((sta->flags & WLAN_STA_WPS) ||
1173 ((sta->flags & WLAN_STA_MAYBE_WPS) && hapd->conf->wpa)) {
1174 struct wpabuf *wps = wps_build_assoc_resp_ie();
1175 if (wps) {
1176 os_memcpy(p, wpabuf_head(wps), wpabuf_len(wps));
1177 p += wpabuf_len(wps);
1178 wpabuf_free(wps);
1179 }
1180 }
1181 #endif /* CONFIG_WPS */
1182
1183 #ifdef CONFIG_P2P
1184 if (sta->p2p_ie) {
1185 struct wpabuf *p2p_resp_ie;
1186 enum p2p_status_code status;
1187 switch (status_code) {
1188 case WLAN_STATUS_SUCCESS:
1189 status = P2P_SC_SUCCESS;
1190 break;
1191 case WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA:
1192 status = P2P_SC_FAIL_LIMIT_REACHED;
1193 break;
1194 default:
1195 status = P2P_SC_FAIL_INVALID_PARAMS;
1196 break;
1197 }
1198 p2p_resp_ie = p2p_group_assoc_resp_ie(hapd->p2p_group, status);
1199 if (p2p_resp_ie) {
1200 os_memcpy(p, wpabuf_head(p2p_resp_ie),
1201 wpabuf_len(p2p_resp_ie));
1202 p += wpabuf_len(p2p_resp_ie);
1203 wpabuf_free(p2p_resp_ie);
1204 }
1205 }
1206 #endif /* CONFIG_P2P */
1207
1208 #ifdef CONFIG_P2P_MANAGER
1209 if (hapd->conf->p2p & P2P_MANAGE)
1210 p = hostapd_eid_p2p_manage(hapd, p);
1211 #endif /* CONFIG_P2P_MANAGER */
1212
1213 send_len += p - reply->u.assoc_resp.variable;
1214
1215 if (hostapd_drv_send_mlme(hapd, reply, send_len, 0) < 0)
1216 wpa_printf(MSG_INFO, "Failed to send assoc resp: %s",
1217 strerror(errno));
1218 }
1219
1220
1221 static void handle_assoc(struct hostapd_data *hapd,
1222 const struct ieee80211_mgmt *mgmt, size_t len,
1223 int reassoc)
1224 {
1225 u16 capab_info, listen_interval;
1226 u16 resp = WLAN_STATUS_SUCCESS;
1227 const u8 *pos;
1228 int left, i;
1229 struct sta_info *sta;
1230
1231 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
1232 sizeof(mgmt->u.assoc_req))) {
1233 printf("handle_assoc(reassoc=%d) - too short payload (len=%lu)"
1234 "\n", reassoc, (unsigned long) len);
1235 return;
1236 }
1237
1238 #ifdef CONFIG_TESTING_OPTIONS
1239 if (reassoc) {
1240 if (hapd->iconf->ignore_reassoc_probability > 0.0d &&
1241 drand48() < hapd->iconf->ignore_reassoc_probability) {
1242 wpa_printf(MSG_INFO,
1243 "TESTING: ignoring reassoc request from "
1244 MACSTR, MAC2STR(mgmt->sa));
1245 return;
1246 }
1247 } else {
1248 if (hapd->iconf->ignore_assoc_probability > 0.0d &&
1249 drand48() < hapd->iconf->ignore_assoc_probability) {
1250 wpa_printf(MSG_INFO,
1251 "TESTING: ignoring assoc request from "
1252 MACSTR, MAC2STR(mgmt->sa));
1253 return;
1254 }
1255 }
1256 #endif /* CONFIG_TESTING_OPTIONS */
1257
1258 if (reassoc) {
1259 capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info);
1260 listen_interval = le_to_host16(
1261 mgmt->u.reassoc_req.listen_interval);
1262 wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR
1263 " capab_info=0x%02x listen_interval=%d current_ap="
1264 MACSTR,
1265 MAC2STR(mgmt->sa), capab_info, listen_interval,
1266 MAC2STR(mgmt->u.reassoc_req.current_ap));
1267 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req));
1268 pos = mgmt->u.reassoc_req.variable;
1269 } else {
1270 capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
1271 listen_interval = le_to_host16(
1272 mgmt->u.assoc_req.listen_interval);
1273 wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR
1274 " capab_info=0x%02x listen_interval=%d",
1275 MAC2STR(mgmt->sa), capab_info, listen_interval);
1276 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req));
1277 pos = mgmt->u.assoc_req.variable;
1278 }
1279
1280 sta = ap_get_sta(hapd, mgmt->sa);
1281 #ifdef CONFIG_IEEE80211R
1282 if (sta && sta->auth_alg == WLAN_AUTH_FT &&
1283 (sta->flags & WLAN_STA_AUTH) == 0) {
1284 wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate "
1285 "prior to authentication since it is using "
1286 "over-the-DS FT", MAC2STR(mgmt->sa));
1287 } else
1288 #endif /* CONFIG_IEEE80211R */
1289 if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
1290 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1291 HOSTAPD_LEVEL_INFO, "Station tried to "
1292 "associate before authentication "
1293 "(aid=%d flags=0x%x)",
1294 sta ? sta->aid : -1,
1295 sta ? sta->flags : 0);
1296 send_deauth(hapd, mgmt->sa,
1297 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA);
1298 return;
1299 }
1300
1301 if (hapd->tkip_countermeasures) {
1302 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
1303 goto fail;
1304 }
1305
1306 if (listen_interval > hapd->conf->max_listen_interval) {
1307 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1308 HOSTAPD_LEVEL_DEBUG,
1309 "Too large Listen Interval (%d)",
1310 listen_interval);
1311 resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE;
1312 goto fail;
1313 }
1314
1315 /* followed by SSID and Supported rates; and HT capabilities if 802.11n
1316 * is used */
1317 resp = check_assoc_ies(hapd, sta, pos, left, reassoc);
1318 if (resp != WLAN_STATUS_SUCCESS)
1319 goto fail;
1320
1321 if (hostapd_get_aid(hapd, sta) < 0) {
1322 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1323 HOSTAPD_LEVEL_INFO, "No room for more AIDs");
1324 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
1325 goto fail;
1326 }
1327
1328 sta->capability = capab_info;
1329 sta->listen_interval = listen_interval;
1330
1331 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
1332 sta->flags |= WLAN_STA_NONERP;
1333 for (i = 0; i < sta->supported_rates_len; i++) {
1334 if ((sta->supported_rates[i] & 0x7f) > 22) {
1335 sta->flags &= ~WLAN_STA_NONERP;
1336 break;
1337 }
1338 }
1339 if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) {
1340 sta->nonerp_set = 1;
1341 hapd->iface->num_sta_non_erp++;
1342 if (hapd->iface->num_sta_non_erp == 1)
1343 ieee802_11_set_beacons(hapd->iface);
1344 }
1345
1346 if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) &&
1347 !sta->no_short_slot_time_set) {
1348 sta->no_short_slot_time_set = 1;
1349 hapd->iface->num_sta_no_short_slot_time++;
1350 if (hapd->iface->current_mode->mode ==
1351 HOSTAPD_MODE_IEEE80211G &&
1352 hapd->iface->num_sta_no_short_slot_time == 1)
1353 ieee802_11_set_beacons(hapd->iface);
1354 }
1355
1356 if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1357 sta->flags |= WLAN_STA_SHORT_PREAMBLE;
1358 else
1359 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
1360
1361 if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
1362 !sta->no_short_preamble_set) {
1363 sta->no_short_preamble_set = 1;
1364 hapd->iface->num_sta_no_short_preamble++;
1365 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
1366 && hapd->iface->num_sta_no_short_preamble == 1)
1367 ieee802_11_set_beacons(hapd->iface);
1368 }
1369
1370 #ifdef CONFIG_IEEE80211N
1371 update_ht_state(hapd, sta);
1372 #endif /* CONFIG_IEEE80211N */
1373
1374 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1375 HOSTAPD_LEVEL_DEBUG,
1376 "association OK (aid %d)", sta->aid);
1377 /* Station will be marked associated, after it acknowledges AssocResp
1378 */
1379 sta->flags |= WLAN_STA_ASSOC_REQ_OK;
1380
1381 #ifdef CONFIG_IEEE80211W
1382 if ((sta->flags & WLAN_STA_MFP) && sta->sa_query_timed_out) {
1383 wpa_printf(MSG_DEBUG, "Allowing %sassociation after timed out "
1384 "SA Query procedure", reassoc ? "re" : "");
1385 /* TODO: Send a protected Disassociate frame to the STA using
1386 * the old key and Reason Code "Previous Authentication no
1387 * longer valid". Make sure this is only sent protected since
1388 * unprotected frame would be received by the STA that is now
1389 * trying to associate.
1390 */
1391 }
1392 #endif /* CONFIG_IEEE80211W */
1393
1394 if (reassoc) {
1395 os_memcpy(sta->previous_ap, mgmt->u.reassoc_req.current_ap,
1396 ETH_ALEN);
1397 }
1398
1399 if (sta->last_assoc_req)
1400 os_free(sta->last_assoc_req);
1401 sta->last_assoc_req = os_malloc(len);
1402 if (sta->last_assoc_req)
1403 os_memcpy(sta->last_assoc_req, mgmt, len);
1404
1405 /* Make sure that the previously registered inactivity timer will not
1406 * remove the STA immediately. */
1407 sta->timeout_next = STA_NULLFUNC;
1408
1409 fail:
1410 send_assoc_resp(hapd, sta, resp, reassoc, pos, left);
1411 }
1412
1413
1414 static void handle_disassoc(struct hostapd_data *hapd,
1415 const struct ieee80211_mgmt *mgmt, size_t len)
1416 {
1417 struct sta_info *sta;
1418
1419 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) {
1420 printf("handle_disassoc - too short payload (len=%lu)\n",
1421 (unsigned long) len);
1422 return;
1423 }
1424
1425 wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d",
1426 MAC2STR(mgmt->sa),
1427 le_to_host16(mgmt->u.disassoc.reason_code));
1428
1429 sta = ap_get_sta(hapd, mgmt->sa);
1430 if (sta == NULL) {
1431 printf("Station " MACSTR " trying to disassociate, but it "
1432 "is not associated.\n", MAC2STR(mgmt->sa));
1433 return;
1434 }
1435
1436 ap_sta_set_authorized(hapd, sta, 0);
1437 sta->flags &= ~(WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK);
1438 wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
1439 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1440 HOSTAPD_LEVEL_INFO, "disassociated");
1441 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1442 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1443 /* Stop Accounting and IEEE 802.1X sessions, but leave the STA
1444 * authenticated. */
1445 accounting_sta_stop(hapd, sta);
1446 ieee802_1x_free_station(sta);
1447 hostapd_drv_sta_remove(hapd, sta->addr);
1448
1449 if (sta->timeout_next == STA_NULLFUNC ||
1450 sta->timeout_next == STA_DISASSOC) {
1451 sta->timeout_next = STA_DEAUTH;
1452 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1453 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
1454 hapd, sta);
1455 }
1456
1457 mlme_disassociate_indication(
1458 hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code));
1459 }
1460
1461
1462 static void handle_deauth(struct hostapd_data *hapd,
1463 const struct ieee80211_mgmt *mgmt, size_t len)
1464 {
1465 struct sta_info *sta;
1466
1467 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) {
1468 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "handle_deauth - too short "
1469 "payload (len=%lu)", (unsigned long) len);
1470 return;
1471 }
1472
1473 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "deauthentication: STA=" MACSTR
1474 " reason_code=%d",
1475 MAC2STR(mgmt->sa), le_to_host16(mgmt->u.deauth.reason_code));
1476
1477 sta = ap_get_sta(hapd, mgmt->sa);
1478 if (sta == NULL) {
1479 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR " trying "
1480 "to deauthenticate, but it is not authenticated",
1481 MAC2STR(mgmt->sa));
1482 return;
1483 }
1484
1485 ap_sta_set_authorized(hapd, sta, 0);
1486 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC |
1487 WLAN_STA_ASSOC_REQ_OK);
1488 wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
1489 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1490 HOSTAPD_LEVEL_DEBUG, "deauthenticated");
1491 mlme_deauthenticate_indication(
1492 hapd, sta, le_to_host16(mgmt->u.deauth.reason_code));
1493 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1494 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1495 ap_free_sta(hapd, sta);
1496 }
1497
1498
1499 static void handle_beacon(struct hostapd_data *hapd,
1500 const struct ieee80211_mgmt *mgmt, size_t len,
1501 struct hostapd_frame_info *fi)
1502 {
1503 struct ieee802_11_elems elems;
1504
1505 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) {
1506 printf("handle_beacon - too short payload (len=%lu)\n",
1507 (unsigned long) len);
1508 return;
1509 }
1510
1511 (void) ieee802_11_parse_elems(mgmt->u.beacon.variable,
1512 len - (IEEE80211_HDRLEN +
1513 sizeof(mgmt->u.beacon)), &elems,
1514 0);
1515
1516 ap_list_process_beacon(hapd->iface, mgmt, &elems, fi);
1517 }
1518
1519
1520 #ifdef CONFIG_IEEE80211W
1521
1522 static void hostapd_sa_query_action(struct hostapd_data *hapd,
1523 const struct ieee80211_mgmt *mgmt,
1524 size_t len)
1525 {
1526 const u8 *end;
1527
1528 end = mgmt->u.action.u.sa_query_resp.trans_id +
1529 WLAN_SA_QUERY_TR_ID_LEN;
1530 if (((u8 *) mgmt) + len < end) {
1531 wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short SA Query Action "
1532 "frame (len=%lu)", (unsigned long) len);
1533 return;
1534 }
1535
1536 ieee802_11_sa_query_action(hapd, mgmt->sa,
1537 mgmt->u.action.u.sa_query_resp.action,
1538 mgmt->u.action.u.sa_query_resp.trans_id);
1539 }
1540
1541
1542 static int robust_action_frame(u8 category)
1543 {
1544 return category != WLAN_ACTION_PUBLIC &&
1545 category != WLAN_ACTION_HT;
1546 }
1547 #endif /* CONFIG_IEEE80211W */
1548
1549
1550 #ifdef CONFIG_WNM
1551 static void hostapd_wnm_action(struct hostapd_data *hapd, struct sta_info *sta,
1552 const struct ieee80211_mgmt *mgmt,
1553 size_t len)
1554 {
1555 struct rx_action action;
1556 if (len < IEEE80211_HDRLEN + 2)
1557 return;
1558 os_memset(&action, 0, sizeof(action));
1559 action.da = mgmt->da;
1560 action.sa = mgmt->sa;
1561 action.bssid = mgmt->bssid;
1562 action.category = mgmt->u.action.category;
1563 action.data = (const u8 *) &mgmt->u.action.u.wnm_sleep_req.action;
1564 action.len = len - IEEE80211_HDRLEN - 1;
1565 action.freq = hapd->iface->freq;
1566 ieee802_11_rx_wnm_action_ap(hapd, &action);
1567 }
1568 #endif /* CONFIG_WNM */
1569
1570
1571 static void handle_action(struct hostapd_data *hapd,
1572 const struct ieee80211_mgmt *mgmt, size_t len)
1573 {
1574 struct sta_info *sta;
1575 sta = ap_get_sta(hapd, mgmt->sa);
1576
1577 if (len < IEEE80211_HDRLEN + 1) {
1578 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1579 HOSTAPD_LEVEL_DEBUG,
1580 "handle_action - too short payload (len=%lu)",
1581 (unsigned long) len);
1582 return;
1583 }
1584
1585 if (mgmt->u.action.category != WLAN_ACTION_PUBLIC &&
1586 (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))) {
1587 wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored Action "
1588 "frame (category=%u) from unassociated STA " MACSTR,
1589 MAC2STR(mgmt->sa), mgmt->u.action.category);
1590 return;
1591 }
1592
1593 #ifdef CONFIG_IEEE80211W
1594 if (sta && (sta->flags & WLAN_STA_MFP) &&
1595 !(mgmt->frame_control & host_to_le16(WLAN_FC_ISWEP) &&
1596 robust_action_frame(mgmt->u.action.category))) {
1597 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1598 HOSTAPD_LEVEL_DEBUG,
1599 "Dropped unprotected Robust Action frame from "
1600 "an MFP STA");
1601 return;
1602 }
1603 #endif /* CONFIG_IEEE80211W */
1604
1605 switch (mgmt->u.action.category) {
1606 #ifdef CONFIG_IEEE80211R
1607 case WLAN_ACTION_FT:
1608 if (wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action,
1609 len - IEEE80211_HDRLEN))
1610 break;
1611 return;
1612 #endif /* CONFIG_IEEE80211R */
1613 case WLAN_ACTION_WMM:
1614 hostapd_wmm_action(hapd, mgmt, len);
1615 return;
1616 #ifdef CONFIG_IEEE80211W
1617 case WLAN_ACTION_SA_QUERY:
1618 hostapd_sa_query_action(hapd, mgmt, len);
1619 return;
1620 #endif /* CONFIG_IEEE80211W */
1621 #ifdef CONFIG_WNM
1622 case WLAN_ACTION_WNM:
1623 hostapd_wnm_action(hapd, sta, mgmt, len);
1624 return;
1625 #endif /* CONFIG_WNM */
1626 case WLAN_ACTION_PUBLIC:
1627 if (hapd->public_action_cb) {
1628 hapd->public_action_cb(hapd->public_action_cb_ctx,
1629 (u8 *) mgmt, len,
1630 hapd->iface->freq);
1631 }
1632 if (hapd->public_action_cb2) {
1633 hapd->public_action_cb2(hapd->public_action_cb2_ctx,
1634 (u8 *) mgmt, len,
1635 hapd->iface->freq);
1636 }
1637 if (hapd->public_action_cb || hapd->public_action_cb2)
1638 return;
1639 break;
1640 case WLAN_ACTION_VENDOR_SPECIFIC:
1641 if (hapd->vendor_action_cb) {
1642 if (hapd->vendor_action_cb(hapd->vendor_action_cb_ctx,
1643 (u8 *) mgmt, len,
1644 hapd->iface->freq) == 0)
1645 return;
1646 }
1647 break;
1648 }
1649
1650 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1651 HOSTAPD_LEVEL_DEBUG,
1652 "handle_action - unknown action category %d or invalid "
1653 "frame",
1654 mgmt->u.action.category);
1655 if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) &&
1656 !(mgmt->sa[0] & 0x01)) {
1657 struct ieee80211_mgmt *resp;
1658
1659 /*
1660 * IEEE 802.11-REVma/D9.0 - 7.3.1.11
1661 * Return the Action frame to the source without change
1662 * except that MSB of the Category set to 1.
1663 */
1664 wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action "
1665 "frame back to sender");
1666 resp = os_malloc(len);
1667 if (resp == NULL)
1668 return;
1669 os_memcpy(resp, mgmt, len);
1670 os_memcpy(resp->da, resp->sa, ETH_ALEN);
1671 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
1672 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
1673 resp->u.action.category |= 0x80;
1674
1675 if (hostapd_drv_send_mlme(hapd, resp, len, 0) < 0) {
1676 wpa_printf(MSG_ERROR, "IEEE 802.11: Failed to send "
1677 "Action frame");
1678 }
1679 os_free(resp);
1680 }
1681 }
1682
1683
1684 /**
1685 * ieee802_11_mgmt - process incoming IEEE 802.11 management frames
1686 * @hapd: hostapd BSS data structure (the BSS to which the management frame was
1687 * sent to)
1688 * @buf: management frame data (starting from IEEE 802.11 header)
1689 * @len: length of frame data in octets
1690 * @fi: meta data about received frame (signal level, etc.)
1691 *
1692 * Process all incoming IEEE 802.11 management frames. This will be called for
1693 * each frame received from the kernel driver through wlan#ap interface. In
1694 * addition, it can be called to re-inserted pending frames (e.g., when using
1695 * external RADIUS server as an MAC ACL).
1696 */
1697 void ieee802_11_mgmt(struct hostapd_data *hapd, const u8 *buf, size_t len,
1698 struct hostapd_frame_info *fi)
1699 {
1700 struct ieee80211_mgmt *mgmt;
1701 int broadcast;
1702 u16 fc, stype;
1703
1704 if (len < 24)
1705 return;
1706
1707 mgmt = (struct ieee80211_mgmt *) buf;
1708 fc = le_to_host16(mgmt->frame_control);
1709 stype = WLAN_FC_GET_STYPE(fc);
1710
1711 if (stype == WLAN_FC_STYPE_BEACON) {
1712 handle_beacon(hapd, mgmt, len, fi);
1713 return;
1714 }
1715
1716 broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff &&
1717 mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff &&
1718 mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff;
1719
1720 if (!broadcast &&
1721 #ifdef CONFIG_P2P
1722 /* Invitation responses can be sent with the peer MAC as BSSID */
1723 !((hapd->conf->p2p & P2P_GROUP_OWNER) &&
1724 stype == WLAN_FC_STYPE_ACTION) &&
1725 #endif /* CONFIG_P2P */
1726 os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) {
1727 printf("MGMT: BSSID=" MACSTR " not our address\n",
1728 MAC2STR(mgmt->bssid));
1729 return;
1730 }
1731
1732
1733 if (stype == WLAN_FC_STYPE_PROBE_REQ) {
1734 handle_probe_req(hapd, mgmt, len, fi->ssi_signal);
1735 return;
1736 }
1737
1738 if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) {
1739 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1740 HOSTAPD_LEVEL_DEBUG,
1741 "MGMT: DA=" MACSTR " not our address",
1742 MAC2STR(mgmt->da));
1743 return;
1744 }
1745
1746 switch (stype) {
1747 case WLAN_FC_STYPE_AUTH:
1748 wpa_printf(MSG_DEBUG, "mgmt::auth");
1749 handle_auth(hapd, mgmt, len);
1750 break;
1751 case WLAN_FC_STYPE_ASSOC_REQ:
1752 wpa_printf(MSG_DEBUG, "mgmt::assoc_req");
1753 handle_assoc(hapd, mgmt, len, 0);
1754 break;
1755 case WLAN_FC_STYPE_REASSOC_REQ:
1756 wpa_printf(MSG_DEBUG, "mgmt::reassoc_req");
1757 handle_assoc(hapd, mgmt, len, 1);
1758 break;
1759 case WLAN_FC_STYPE_DISASSOC:
1760 wpa_printf(MSG_DEBUG, "mgmt::disassoc");
1761 handle_disassoc(hapd, mgmt, len);
1762 break;
1763 case WLAN_FC_STYPE_DEAUTH:
1764 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "mgmt::deauth");
1765 handle_deauth(hapd, mgmt, len);
1766 break;
1767 case WLAN_FC_STYPE_ACTION:
1768 wpa_printf(MSG_DEBUG, "mgmt::action");
1769 handle_action(hapd, mgmt, len);
1770 break;
1771 default:
1772 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1773 HOSTAPD_LEVEL_DEBUG,
1774 "unknown mgmt frame subtype %d", stype);
1775 break;
1776 }
1777 }
1778
1779
1780 static void handle_auth_cb(struct hostapd_data *hapd,
1781 const struct ieee80211_mgmt *mgmt,
1782 size_t len, int ok)
1783 {
1784 u16 auth_alg, auth_transaction, status_code;
1785 struct sta_info *sta;
1786
1787 if (!ok) {
1788 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1789 HOSTAPD_LEVEL_NOTICE,
1790 "did not acknowledge authentication response");
1791 return;
1792 }
1793
1794 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
1795 printf("handle_auth_cb - too short payload (len=%lu)\n",
1796 (unsigned long) len);
1797 return;
1798 }
1799
1800 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
1801 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
1802 status_code = le_to_host16(mgmt->u.auth.status_code);
1803
1804 sta = ap_get_sta(hapd, mgmt->da);
1805 if (!sta) {
1806 printf("handle_auth_cb: STA " MACSTR " not found\n",
1807 MAC2STR(mgmt->da));
1808 return;
1809 }
1810
1811 if (status_code == WLAN_STATUS_SUCCESS &&
1812 ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
1813 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
1814 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1815 HOSTAPD_LEVEL_INFO, "authenticated");
1816 sta->flags |= WLAN_STA_AUTH;
1817 }
1818 }
1819
1820
1821 static void handle_assoc_cb(struct hostapd_data *hapd,
1822 const struct ieee80211_mgmt *mgmt,
1823 size_t len, int reassoc, int ok)
1824 {
1825 u16 status;
1826 struct sta_info *sta;
1827 int new_assoc = 1;
1828 struct ieee80211_ht_capabilities ht_cap;
1829 struct ieee80211_vht_capabilities vht_cap;
1830
1831 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) :
1832 sizeof(mgmt->u.assoc_resp))) {
1833 printf("handle_assoc_cb(reassoc=%d) - too short payload "
1834 "(len=%lu)\n", reassoc, (unsigned long) len);
1835 return;
1836 }
1837
1838 sta = ap_get_sta(hapd, mgmt->da);
1839 if (!sta) {
1840 printf("handle_assoc_cb: STA " MACSTR " not found\n",
1841 MAC2STR(mgmt->da));
1842 return;
1843 }
1844
1845 if (!ok) {
1846 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1847 HOSTAPD_LEVEL_DEBUG,
1848 "did not acknowledge association response");
1849 sta->flags &= ~WLAN_STA_ASSOC_REQ_OK;
1850 return;
1851 }
1852
1853 if (reassoc)
1854 status = le_to_host16(mgmt->u.reassoc_resp.status_code);
1855 else
1856 status = le_to_host16(mgmt->u.assoc_resp.status_code);
1857
1858 if (status != WLAN_STATUS_SUCCESS)
1859 goto fail;
1860
1861 /* Stop previous accounting session, if one is started, and allocate
1862 * new session id for the new session. */
1863 accounting_sta_stop(hapd, sta);
1864
1865 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1866 HOSTAPD_LEVEL_INFO,
1867 "associated (aid %d)",
1868 sta->aid);
1869
1870 if (sta->flags & WLAN_STA_ASSOC)
1871 new_assoc = 0;
1872 sta->flags |= WLAN_STA_ASSOC;
1873 if ((!hapd->conf->ieee802_1x && !hapd->conf->wpa) ||
1874 sta->auth_alg == WLAN_AUTH_FT) {
1875 /*
1876 * Open, static WEP, or FT protocol; no separate authorization
1877 * step.
1878 */
1879 ap_sta_set_authorized(hapd, sta, 1);
1880 }
1881
1882 if (reassoc)
1883 mlme_reassociate_indication(hapd, sta);
1884 else
1885 mlme_associate_indication(hapd, sta);
1886
1887 #ifdef CONFIG_IEEE80211W
1888 sta->sa_query_timed_out = 0;
1889 #endif /* CONFIG_IEEE80211W */
1890
1891 /*
1892 * Remove the STA entry in order to make sure the STA PS state gets
1893 * cleared and configuration gets updated in case of reassociation back
1894 * to the same AP.
1895 */
1896 hostapd_drv_sta_remove(hapd, sta->addr);
1897
1898 #ifdef CONFIG_IEEE80211N
1899 if (sta->flags & WLAN_STA_HT)
1900 hostapd_get_ht_capab(hapd, sta->ht_capabilities, &ht_cap);
1901 #endif /* CONFIG_IEEE80211N */
1902 #ifdef CONFIG_IEEE80211AC
1903 if (sta->flags & WLAN_STA_VHT)
1904 hostapd_get_vht_capab(hapd, sta->vht_capabilities, &vht_cap);
1905 #endif /* CONFIG_IEEE80211AC */
1906
1907 if (hostapd_sta_add(hapd, sta->addr, sta->aid, sta->capability,
1908 sta->supported_rates, sta->supported_rates_len,
1909 sta->listen_interval,
1910 sta->flags & WLAN_STA_HT ? &ht_cap : NULL,
1911 sta->flags & WLAN_STA_VHT ? &vht_cap : NULL,
1912 sta->flags, sta->qosinfo)) {
1913 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1914 HOSTAPD_LEVEL_NOTICE,
1915 "Could not add STA to kernel driver");
1916
1917 ap_sta_disconnect(hapd, sta, sta->addr,
1918 WLAN_REASON_DISASSOC_AP_BUSY);
1919
1920 goto fail;
1921 }
1922
1923 if (sta->flags & WLAN_STA_WDS)
1924 hostapd_set_wds_sta(hapd, sta->addr, sta->aid, 1);
1925
1926 if (sta->eapol_sm == NULL) {
1927 /*
1928 * This STA does not use RADIUS server for EAP authentication,
1929 * so bind it to the selected VLAN interface now, since the
1930 * interface selection is not going to change anymore.
1931 */
1932 if (ap_sta_bind_vlan(hapd, sta, 0) < 0)
1933 goto fail;
1934 } else if (sta->vlan_id) {
1935 /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */
1936 if (ap_sta_bind_vlan(hapd, sta, 0) < 0)
1937 goto fail;
1938 }
1939
1940 hostapd_set_sta_flags(hapd, sta);
1941
1942 if (sta->auth_alg == WLAN_AUTH_FT)
1943 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
1944 else
1945 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
1946 hapd->new_assoc_sta_cb(hapd, sta, !new_assoc);
1947
1948 ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
1949
1950 fail:
1951 /* Copy of the association request is not needed anymore */
1952 if (sta->last_assoc_req) {
1953 os_free(sta->last_assoc_req);
1954 sta->last_assoc_req = NULL;
1955 }
1956 }
1957
1958
1959 static void handle_deauth_cb(struct hostapd_data *hapd,
1960 const struct ieee80211_mgmt *mgmt,
1961 size_t len, int ok)
1962 {
1963 struct sta_info *sta;
1964 if (mgmt->da[0] & 0x01)
1965 return;
1966 sta = ap_get_sta(hapd, mgmt->da);
1967 if (!sta) {
1968 wpa_printf(MSG_DEBUG, "handle_deauth_cb: STA " MACSTR
1969 " not found", MAC2STR(mgmt->da));
1970 return;
1971 }
1972 if (ok)
1973 wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged deauth",
1974 MAC2STR(sta->addr));
1975 else
1976 wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge "
1977 "deauth", MAC2STR(sta->addr));
1978
1979 ap_sta_deauth_cb(hapd, sta);
1980 }
1981
1982
1983 static void handle_disassoc_cb(struct hostapd_data *hapd,
1984 const struct ieee80211_mgmt *mgmt,
1985 size_t len, int ok)
1986 {
1987 struct sta_info *sta;
1988 if (mgmt->da[0] & 0x01)
1989 return;
1990 sta = ap_get_sta(hapd, mgmt->da);
1991 if (!sta) {
1992 wpa_printf(MSG_DEBUG, "handle_disassoc_cb: STA " MACSTR
1993 " not found", MAC2STR(mgmt->da));
1994 return;
1995 }
1996 if (ok)
1997 wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged disassoc",
1998 MAC2STR(sta->addr));
1999 else
2000 wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge "
2001 "disassoc", MAC2STR(sta->addr));
2002
2003 ap_sta_disassoc_cb(hapd, sta);
2004 }
2005
2006
2007 /**
2008 * ieee802_11_mgmt_cb - Process management frame TX status callback
2009 * @hapd: hostapd BSS data structure (the BSS from which the management frame
2010 * was sent from)
2011 * @buf: management frame data (starting from IEEE 802.11 header)
2012 * @len: length of frame data in octets
2013 * @stype: management frame subtype from frame control field
2014 * @ok: Whether the frame was ACK'ed
2015 */
2016 void ieee802_11_mgmt_cb(struct hostapd_data *hapd, const u8 *buf, size_t len,
2017 u16 stype, int ok)
2018 {
2019 const struct ieee80211_mgmt *mgmt;
2020 mgmt = (const struct ieee80211_mgmt *) buf;
2021
2022 switch (stype) {
2023 case WLAN_FC_STYPE_AUTH:
2024 wpa_printf(MSG_DEBUG, "mgmt::auth cb");
2025 handle_auth_cb(hapd, mgmt, len, ok);
2026 break;
2027 case WLAN_FC_STYPE_ASSOC_RESP:
2028 wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb");
2029 handle_assoc_cb(hapd, mgmt, len, 0, ok);
2030 break;
2031 case WLAN_FC_STYPE_REASSOC_RESP:
2032 wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb");
2033 handle_assoc_cb(hapd, mgmt, len, 1, ok);
2034 break;
2035 case WLAN_FC_STYPE_PROBE_RESP:
2036 wpa_printf(MSG_EXCESSIVE, "mgmt::proberesp cb");
2037 break;
2038 case WLAN_FC_STYPE_DEAUTH:
2039 wpa_printf(MSG_DEBUG, "mgmt::deauth cb");
2040 handle_deauth_cb(hapd, mgmt, len, ok);
2041 break;
2042 case WLAN_FC_STYPE_DISASSOC:
2043 wpa_printf(MSG_DEBUG, "mgmt::disassoc cb");
2044 handle_disassoc_cb(hapd, mgmt, len, ok);
2045 break;
2046 case WLAN_FC_STYPE_ACTION:
2047 wpa_printf(MSG_DEBUG, "mgmt::action cb");
2048 break;
2049 default:
2050 printf("unknown mgmt cb frame subtype %d\n", stype);
2051 break;
2052 }
2053 }
2054
2055
2056 int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
2057 {
2058 /* TODO */
2059 return 0;
2060 }
2061
2062
2063 int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
2064 char *buf, size_t buflen)
2065 {
2066 /* TODO */
2067 return 0;
2068 }
2069
2070
2071 void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr,
2072 const u8 *buf, size_t len, int ack)
2073 {
2074 struct sta_info *sta;
2075 struct hostapd_iface *iface = hapd->iface;
2076
2077 sta = ap_get_sta(hapd, addr);
2078 if (sta == NULL && iface->num_bss > 1) {
2079 size_t j;
2080 for (j = 0; j < iface->num_bss; j++) {
2081 hapd = iface->bss[j];
2082 sta = ap_get_sta(hapd, addr);
2083 if (sta)
2084 break;
2085 }
2086 }
2087 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))
2088 return;
2089 if (sta->flags & WLAN_STA_PENDING_POLL) {
2090 wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
2091 "activity poll", MAC2STR(sta->addr),
2092 ack ? "ACKed" : "did not ACK");
2093 if (ack)
2094 sta->flags &= ~WLAN_STA_PENDING_POLL;
2095 }
2096
2097 ieee802_1x_tx_status(hapd, sta, buf, len, ack);
2098 }
2099
2100
2101 void hostapd_eapol_tx_status(struct hostapd_data *hapd, const u8 *dst,
2102 const u8 *data, size_t len, int ack)
2103 {
2104 struct sta_info *sta;
2105 struct hostapd_iface *iface = hapd->iface;
2106
2107 sta = ap_get_sta(hapd, dst);
2108 if (sta == NULL && iface->num_bss > 1) {
2109 size_t j;
2110 for (j = 0; j < iface->num_bss; j++) {
2111 hapd = iface->bss[j];
2112 sta = ap_get_sta(hapd, dst);
2113 if (sta)
2114 break;
2115 }
2116 }
2117 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
2118 wpa_printf(MSG_DEBUG, "Ignore TX status for Data frame to STA "
2119 MACSTR " that is not currently associated",
2120 MAC2STR(dst));
2121 return;
2122 }
2123
2124 ieee802_1x_eapol_tx_status(hapd, sta, data, len, ack);
2125 }
2126
2127
2128 void hostapd_client_poll_ok(struct hostapd_data *hapd, const u8 *addr)
2129 {
2130 struct sta_info *sta;
2131 struct hostapd_iface *iface = hapd->iface;
2132
2133 sta = ap_get_sta(hapd, addr);
2134 if (sta == NULL && iface->num_bss > 1) {
2135 size_t j;
2136 for (j = 0; j < iface->num_bss; j++) {
2137 hapd = iface->bss[j];
2138 sta = ap_get_sta(hapd, addr);
2139 if (sta)
2140 break;
2141 }
2142 }
2143 if (sta == NULL)
2144 return;
2145 if (!(sta->flags & WLAN_STA_PENDING_POLL))
2146 return;
2147
2148 wpa_printf(MSG_DEBUG, "STA " MACSTR " ACKed pending "
2149 "activity poll", MAC2STR(sta->addr));
2150 sta->flags &= ~WLAN_STA_PENDING_POLL;
2151 }
2152
2153
2154 void ieee802_11_rx_from_unknown(struct hostapd_data *hapd, const u8 *src,
2155 int wds)
2156 {
2157 struct sta_info *sta;
2158
2159 sta = ap_get_sta(hapd, src);
2160 if (sta && (sta->flags & WLAN_STA_ASSOC)) {
2161 if (!hapd->conf->wds_sta)
2162 return;
2163
2164 if (wds && !(sta->flags & WLAN_STA_WDS)) {
2165 wpa_printf(MSG_DEBUG, "Enable 4-address WDS mode for "
2166 "STA " MACSTR " (aid %u)",
2167 MAC2STR(sta->addr), sta->aid);
2168 sta->flags |= WLAN_STA_WDS;
2169 hostapd_set_wds_sta(hapd, sta->addr, sta->aid, 1);
2170 }
2171 return;
2172 }
2173
2174 wpa_printf(MSG_DEBUG, "Data/PS-poll frame from not associated STA "
2175 MACSTR, MAC2STR(src));
2176 if (src[0] & 0x01) {
2177 /* Broadcast bit set in SA?! Ignore the frame silently. */
2178 return;
2179 }
2180
2181 if (sta && (sta->flags & WLAN_STA_ASSOC_REQ_OK)) {
2182 wpa_printf(MSG_DEBUG, "Association Response to the STA has "
2183 "already been sent, but no TX status yet known - "
2184 "ignore Class 3 frame issue with " MACSTR,
2185 MAC2STR(src));
2186 return;
2187 }
2188
2189 if (sta && (sta->flags & WLAN_STA_AUTH))
2190 hostapd_drv_sta_disassoc(
2191 hapd, src,
2192 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
2193 else
2194 hostapd_drv_sta_deauth(
2195 hapd, src,
2196 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
2197 }
2198
2199
2200 #endif /* CONFIG_NATIVE_WINDOWS */
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