1 /*
2 * hostapd / IEEE 802.11 Management
3 * Copyright (c) 2002-2013, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "utils/includes.h"
10
11 #ifndef CONFIG_NATIVE_WINDOWS
12
13 #include "utils/common.h"
14 #include "utils/eloop.h"
15 #include "crypto/crypto.h"
16 #include "crypto/sha256.h"
17 #include "crypto/random.h"
18 #include "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
hostapd_eid_supp_rates(struct hostapd_data * hapd,u8 * eid)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
hostapd_eid_ext_supp_rates(struct hostapd_data * hapd,u8 * eid)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
hostapd_own_capab_info(struct hostapd_data * hapd,struct sta_info * sta,int probe)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
ieee802_11_print_ssid(char * buf,const u8 * ssid,u8 len)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
auth_shared_key(struct hostapd_data * hapd,struct sta_info * sta,u16 auth_transaction,const u8 * challenge,int iswep)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
send_auth_reply(struct hostapd_data * hapd,const u8 * dst,const u8 * bssid,u16 auth_alg,u16 auth_transaction,u16 resp,const u8 * ies,size_t ies_len)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
handle_auth_ft_finish(void * ctx,const u8 * dst,const u8 * bssid,u16 auth_transaction,u16 status,const u8 * ies,size_t ies_len)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
auth_process_sae_commit(struct hostapd_data * hapd,struct sta_info * sta)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
auth_build_sae_confirm(struct hostapd_data * hapd,struct sta_info * sta)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
use_sae_anti_clogging(struct hostapd_data * hapd)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
check_sae_token(struct hostapd_data * hapd,const u8 * addr,const u8 * token,size_t token_len)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
auth_build_token_req(struct hostapd_data * hapd,const u8 * addr)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
handle_auth_sae(struct hostapd_data * hapd,struct sta_info * sta,const struct ieee80211_mgmt * mgmt,size_t len,u8 auth_transaction)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
handle_auth(struct hostapd_data * hapd,const struct ieee80211_mgmt * mgmt,size_t len)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, NULL);
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
hostapd_get_aid(struct hostapd_data * hapd,struct sta_info * sta)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
check_ssid(struct hostapd_data * hapd,struct sta_info * sta,const u8 * ssid_ie,size_t ssid_ie_len)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
check_wmm(struct hostapd_data * hapd,struct sta_info * sta,const u8 * wmm_ie,size_t wmm_ie_len)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
copy_supp_rates(struct hostapd_data * hapd,struct sta_info * sta,struct ieee802_11_elems * elems)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
check_assoc_ies(struct hostapd_data * hapd,struct sta_info * sta,const u8 * ies,size_t ies_len,int reassoc)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 const u8 *p2p_dev_addr = NULL;
870
871 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) {
872 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
873 HOSTAPD_LEVEL_INFO, "Station sent an invalid "
874 "association request");
875 return WLAN_STATUS_UNSPECIFIED_FAILURE;
876 }
877
878 resp = check_ssid(hapd, sta, elems.ssid, elems.ssid_len);
879 if (resp != WLAN_STATUS_SUCCESS)
880 return resp;
881 resp = check_wmm(hapd, sta, elems.wmm, elems.wmm_len);
882 if (resp != WLAN_STATUS_SUCCESS)
883 return resp;
884 resp = copy_supp_rates(hapd, sta, &elems);
885 if (resp != WLAN_STATUS_SUCCESS)
886 return resp;
887 #ifdef CONFIG_IEEE80211N
888 resp = copy_sta_ht_capab(hapd, sta, elems.ht_capabilities,
889 elems.ht_capabilities_len);
890 if (resp != WLAN_STATUS_SUCCESS)
891 return resp;
892 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht &&
893 !(sta->flags & WLAN_STA_HT)) {
894 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
895 HOSTAPD_LEVEL_INFO, "Station does not support "
896 "mandatory HT PHY - reject association");
897 return WLAN_STATUS_ASSOC_DENIED_NO_HT;
898 }
899 #endif /* CONFIG_IEEE80211N */
900
901 #ifdef CONFIG_IEEE80211AC
902 resp = copy_sta_vht_capab(hapd, sta, elems.vht_capabilities,
903 elems.vht_capabilities_len);
904 if (resp != WLAN_STATUS_SUCCESS)
905 return resp;
906 if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht &&
907 !(sta->flags & WLAN_STA_VHT)) {
908 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
909 HOSTAPD_LEVEL_INFO, "Station does not support "
910 "mandatory VHT PHY - reject association");
911 return WLAN_STATUS_UNSPECIFIED_FAILURE;
912 }
913 #endif /* CONFIG_IEEE80211AC */
914
915 #ifdef CONFIG_P2P
916 if (elems.p2p) {
917 wpabuf_free(sta->p2p_ie);
918 sta->p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
919 P2P_IE_VENDOR_TYPE);
920 if (sta->p2p_ie)
921 p2p_dev_addr = p2p_get_go_dev_addr(sta->p2p_ie);
922 } else {
923 wpabuf_free(sta->p2p_ie);
924 sta->p2p_ie = NULL;
925 }
926 #endif /* CONFIG_P2P */
927
928 if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) {
929 wpa_ie = elems.rsn_ie;
930 wpa_ie_len = elems.rsn_ie_len;
931 } else if ((hapd->conf->wpa & WPA_PROTO_WPA) &&
932 elems.wpa_ie) {
933 wpa_ie = elems.wpa_ie;
934 wpa_ie_len = elems.wpa_ie_len;
935 } else {
936 wpa_ie = NULL;
937 wpa_ie_len = 0;
938 }
939
940 #ifdef CONFIG_WPS
941 sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS | WLAN_STA_WPS2);
942 if (hapd->conf->wps_state && elems.wps_ie) {
943 wpa_printf(MSG_DEBUG, "STA included WPS IE in (Re)Association "
944 "Request - assume WPS is used");
945 sta->flags |= WLAN_STA_WPS;
946 wpabuf_free(sta->wps_ie);
947 sta->wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
948 WPS_IE_VENDOR_TYPE);
949 if (sta->wps_ie && wps_is_20(sta->wps_ie)) {
950 wpa_printf(MSG_DEBUG, "WPS: STA supports WPS 2.0");
951 sta->flags |= WLAN_STA_WPS2;
952 }
953 wpa_ie = NULL;
954 wpa_ie_len = 0;
955 if (sta->wps_ie && wps_validate_assoc_req(sta->wps_ie) < 0) {
956 wpa_printf(MSG_DEBUG, "WPS: Invalid WPS IE in "
957 "(Re)Association Request - reject");
958 return WLAN_STATUS_INVALID_IE;
959 }
960 } else if (hapd->conf->wps_state && wpa_ie == NULL) {
961 wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE in "
962 "(Re)Association Request - possible WPS use");
963 sta->flags |= WLAN_STA_MAYBE_WPS;
964 } else
965 #endif /* CONFIG_WPS */
966 if (hapd->conf->wpa && wpa_ie == NULL) {
967 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
968 HOSTAPD_LEVEL_INFO,
969 "No WPA/RSN IE in association request");
970 return WLAN_STATUS_INVALID_IE;
971 }
972
973 if (hapd->conf->wpa && wpa_ie) {
974 int res;
975 wpa_ie -= 2;
976 wpa_ie_len += 2;
977 if (sta->wpa_sm == NULL)
978 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
979 sta->addr,
980 p2p_dev_addr);
981 if (sta->wpa_sm == NULL) {
982 wpa_printf(MSG_WARNING, "Failed to initialize WPA "
983 "state machine");
984 return WLAN_STATUS_UNSPECIFIED_FAILURE;
985 }
986 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
987 wpa_ie, wpa_ie_len,
988 elems.mdie, elems.mdie_len);
989 if (res == WPA_INVALID_GROUP)
990 resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
991 else if (res == WPA_INVALID_PAIRWISE)
992 resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
993 else if (res == WPA_INVALID_AKMP)
994 resp = WLAN_STATUS_AKMP_NOT_VALID;
995 else if (res == WPA_ALLOC_FAIL)
996 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
997 #ifdef CONFIG_IEEE80211W
998 else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION)
999 resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
1000 else if (res == WPA_INVALID_MGMT_GROUP_CIPHER)
1001 resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
1002 #endif /* CONFIG_IEEE80211W */
1003 else if (res == WPA_INVALID_MDIE)
1004 resp = WLAN_STATUS_INVALID_MDIE;
1005 else if (res != WPA_IE_OK)
1006 resp = WLAN_STATUS_INVALID_IE;
1007 if (resp != WLAN_STATUS_SUCCESS)
1008 return resp;
1009 #ifdef CONFIG_IEEE80211W
1010 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
1011 sta->sa_query_count > 0)
1012 ap_check_sa_query_timeout(hapd, sta);
1013 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
1014 (!reassoc || sta->auth_alg != WLAN_AUTH_FT)) {
1015 /*
1016 * STA has already been associated with MFP and SA
1017 * Query timeout has not been reached. Reject the
1018 * association attempt temporarily and start SA Query,
1019 * if one is not pending.
1020 */
1021
1022 if (sta->sa_query_count == 0)
1023 ap_sta_start_sa_query(hapd, sta);
1024
1025 return WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;
1026 }
1027
1028 if (wpa_auth_uses_mfp(sta->wpa_sm))
1029 sta->flags |= WLAN_STA_MFP;
1030 else
1031 sta->flags &= ~WLAN_STA_MFP;
1032 #endif /* CONFIG_IEEE80211W */
1033
1034 #ifdef CONFIG_IEEE80211R
1035 if (sta->auth_alg == WLAN_AUTH_FT) {
1036 if (!reassoc) {
1037 wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried "
1038 "to use association (not "
1039 "re-association) with FT auth_alg",
1040 MAC2STR(sta->addr));
1041 return WLAN_STATUS_UNSPECIFIED_FAILURE;
1042 }
1043
1044 resp = wpa_ft_validate_reassoc(sta->wpa_sm, ies,
1045 ies_len);
1046 if (resp != WLAN_STATUS_SUCCESS)
1047 return resp;
1048 }
1049 #endif /* CONFIG_IEEE80211R */
1050
1051 #ifdef CONFIG_SAE
1052 if (wpa_auth_uses_sae(sta->wpa_sm) &&
1053 sta->auth_alg != WLAN_AUTH_SAE) {
1054 wpa_printf(MSG_DEBUG, "SAE: " MACSTR " tried to use "
1055 "SAE AKM after non-SAE auth_alg %u",
1056 MAC2STR(sta->addr), sta->auth_alg);
1057 return WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
1058 }
1059 #endif /* CONFIG_SAE */
1060
1061 #ifdef CONFIG_IEEE80211N
1062 if ((sta->flags & (WLAN_STA_HT | WLAN_STA_VHT)) &&
1063 wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) {
1064 hostapd_logger(hapd, sta->addr,
1065 HOSTAPD_MODULE_IEEE80211,
1066 HOSTAPD_LEVEL_INFO,
1067 "Station tried to use TKIP with HT "
1068 "association");
1069 return WLAN_STATUS_CIPHER_REJECTED_PER_POLICY;
1070 }
1071 #endif /* CONFIG_IEEE80211N */
1072 } else
1073 wpa_auth_sta_no_wpa(sta->wpa_sm);
1074
1075 #ifdef CONFIG_P2P
1076 p2p_group_notif_assoc(hapd->p2p_group, sta->addr, ies, ies_len);
1077 #endif /* CONFIG_P2P */
1078
1079 #ifdef CONFIG_HS20
1080 wpabuf_free(sta->hs20_ie);
1081 if (elems.hs20 && elems.hs20_len > 4) {
1082 sta->hs20_ie = wpabuf_alloc_copy(elems.hs20 + 4,
1083 elems.hs20_len - 4);
1084 } else
1085 sta->hs20_ie = NULL;
1086 #endif /* CONFIG_HS20 */
1087
1088 return WLAN_STATUS_SUCCESS;
1089 }
1090
1091
send_deauth(struct hostapd_data * hapd,const u8 * addr,u16 reason_code)1092 static void send_deauth(struct hostapd_data *hapd, const u8 *addr,
1093 u16 reason_code)
1094 {
1095 int send_len;
1096 struct ieee80211_mgmt reply;
1097
1098 os_memset(&reply, 0, sizeof(reply));
1099 reply.frame_control =
1100 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_DEAUTH);
1101 os_memcpy(reply.da, addr, ETH_ALEN);
1102 os_memcpy(reply.sa, hapd->own_addr, ETH_ALEN);
1103 os_memcpy(reply.bssid, hapd->own_addr, ETH_ALEN);
1104
1105 send_len = IEEE80211_HDRLEN + sizeof(reply.u.deauth);
1106 reply.u.deauth.reason_code = host_to_le16(reason_code);
1107
1108 if (hostapd_drv_send_mlme(hapd, &reply, send_len, 0) < 0)
1109 wpa_printf(MSG_INFO, "Failed to send deauth: %s",
1110 strerror(errno));
1111 }
1112
1113
send_assoc_resp(struct hostapd_data * hapd,struct sta_info * sta,u16 status_code,int reassoc,const u8 * ies,size_t ies_len)1114 static void send_assoc_resp(struct hostapd_data *hapd, struct sta_info *sta,
1115 u16 status_code, int reassoc, const u8 *ies,
1116 size_t ies_len)
1117 {
1118 int send_len;
1119 u8 buf[sizeof(struct ieee80211_mgmt) + 1024];
1120 struct ieee80211_mgmt *reply;
1121 u8 *p;
1122
1123 os_memset(buf, 0, sizeof(buf));
1124 reply = (struct ieee80211_mgmt *) buf;
1125 reply->frame_control =
1126 IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1127 (reassoc ? WLAN_FC_STYPE_REASSOC_RESP :
1128 WLAN_FC_STYPE_ASSOC_RESP));
1129 os_memcpy(reply->da, sta->addr, ETH_ALEN);
1130 os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
1131 os_memcpy(reply->bssid, hapd->own_addr, ETH_ALEN);
1132
1133 send_len = IEEE80211_HDRLEN;
1134 send_len += sizeof(reply->u.assoc_resp);
1135 reply->u.assoc_resp.capab_info =
1136 host_to_le16(hostapd_own_capab_info(hapd, sta, 0));
1137 reply->u.assoc_resp.status_code = host_to_le16(status_code);
1138 reply->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0)
1139 | BIT(14) | BIT(15));
1140 /* Supported rates */
1141 p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable);
1142 /* Extended supported rates */
1143 p = hostapd_eid_ext_supp_rates(hapd, p);
1144
1145 #ifdef CONFIG_IEEE80211R
1146 if (status_code == WLAN_STATUS_SUCCESS) {
1147 /* IEEE 802.11r: Mobility Domain Information, Fast BSS
1148 * Transition Information, RSN, [RIC Response] */
1149 p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p,
1150 buf + sizeof(buf) - p,
1151 sta->auth_alg, ies, ies_len);
1152 }
1153 #endif /* CONFIG_IEEE80211R */
1154
1155 #ifdef CONFIG_IEEE80211W
1156 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY)
1157 p = hostapd_eid_assoc_comeback_time(hapd, sta, p);
1158 #endif /* CONFIG_IEEE80211W */
1159
1160 #ifdef CONFIG_IEEE80211N
1161 p = hostapd_eid_ht_capabilities(hapd, p);
1162 p = hostapd_eid_ht_operation(hapd, p);
1163 #endif /* CONFIG_IEEE80211N */
1164
1165 #ifdef CONFIG_IEEE80211AC
1166 p = hostapd_eid_vht_capabilities(hapd, p);
1167 p = hostapd_eid_vht_operation(hapd, p);
1168 #endif /* CONFIG_IEEE80211AC */
1169
1170 p = hostapd_eid_ext_capab(hapd, p);
1171 p = hostapd_eid_bss_max_idle_period(hapd, p);
1172
1173 if (sta->flags & WLAN_STA_WMM)
1174 p = hostapd_eid_wmm(hapd, p);
1175
1176 #ifdef CONFIG_WPS
1177 if ((sta->flags & WLAN_STA_WPS) ||
1178 ((sta->flags & WLAN_STA_MAYBE_WPS) && hapd->conf->wpa)) {
1179 struct wpabuf *wps = wps_build_assoc_resp_ie();
1180 if (wps) {
1181 os_memcpy(p, wpabuf_head(wps), wpabuf_len(wps));
1182 p += wpabuf_len(wps);
1183 wpabuf_free(wps);
1184 }
1185 }
1186 #endif /* CONFIG_WPS */
1187
1188 #ifdef CONFIG_P2P
1189 if (sta->p2p_ie) {
1190 struct wpabuf *p2p_resp_ie;
1191 enum p2p_status_code status;
1192 switch (status_code) {
1193 case WLAN_STATUS_SUCCESS:
1194 status = P2P_SC_SUCCESS;
1195 break;
1196 case WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA:
1197 status = P2P_SC_FAIL_LIMIT_REACHED;
1198 break;
1199 default:
1200 status = P2P_SC_FAIL_INVALID_PARAMS;
1201 break;
1202 }
1203 p2p_resp_ie = p2p_group_assoc_resp_ie(hapd->p2p_group, status);
1204 if (p2p_resp_ie) {
1205 os_memcpy(p, wpabuf_head(p2p_resp_ie),
1206 wpabuf_len(p2p_resp_ie));
1207 p += wpabuf_len(p2p_resp_ie);
1208 wpabuf_free(p2p_resp_ie);
1209 }
1210 }
1211 #endif /* CONFIG_P2P */
1212
1213 #ifdef CONFIG_P2P_MANAGER
1214 if (hapd->conf->p2p & P2P_MANAGE)
1215 p = hostapd_eid_p2p_manage(hapd, p);
1216 #endif /* CONFIG_P2P_MANAGER */
1217
1218 send_len += p - reply->u.assoc_resp.variable;
1219
1220 if (hostapd_drv_send_mlme(hapd, reply, send_len, 0) < 0)
1221 wpa_printf(MSG_INFO, "Failed to send assoc resp: %s",
1222 strerror(errno));
1223 }
1224
1225
handle_assoc(struct hostapd_data * hapd,const struct ieee80211_mgmt * mgmt,size_t len,int reassoc)1226 static void handle_assoc(struct hostapd_data *hapd,
1227 const struct ieee80211_mgmt *mgmt, size_t len,
1228 int reassoc)
1229 {
1230 u16 capab_info, listen_interval;
1231 u16 resp = WLAN_STATUS_SUCCESS;
1232 const u8 *pos;
1233 int left, i;
1234 struct sta_info *sta;
1235
1236 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
1237 sizeof(mgmt->u.assoc_req))) {
1238 printf("handle_assoc(reassoc=%d) - too short payload (len=%lu)"
1239 "\n", reassoc, (unsigned long) len);
1240 return;
1241 }
1242
1243 #ifdef CONFIG_TESTING_OPTIONS
1244 if (reassoc) {
1245 if (hapd->iconf->ignore_reassoc_probability > 0.0d &&
1246 drand48() < hapd->iconf->ignore_reassoc_probability) {
1247 wpa_printf(MSG_INFO,
1248 "TESTING: ignoring reassoc request from "
1249 MACSTR, MAC2STR(mgmt->sa));
1250 return;
1251 }
1252 } else {
1253 if (hapd->iconf->ignore_assoc_probability > 0.0d &&
1254 drand48() < hapd->iconf->ignore_assoc_probability) {
1255 wpa_printf(MSG_INFO,
1256 "TESTING: ignoring assoc request from "
1257 MACSTR, MAC2STR(mgmt->sa));
1258 return;
1259 }
1260 }
1261 #endif /* CONFIG_TESTING_OPTIONS */
1262
1263 if (reassoc) {
1264 capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info);
1265 listen_interval = le_to_host16(
1266 mgmt->u.reassoc_req.listen_interval);
1267 wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR
1268 " capab_info=0x%02x listen_interval=%d current_ap="
1269 MACSTR,
1270 MAC2STR(mgmt->sa), capab_info, listen_interval,
1271 MAC2STR(mgmt->u.reassoc_req.current_ap));
1272 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req));
1273 pos = mgmt->u.reassoc_req.variable;
1274 } else {
1275 capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
1276 listen_interval = le_to_host16(
1277 mgmt->u.assoc_req.listen_interval);
1278 wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR
1279 " capab_info=0x%02x listen_interval=%d",
1280 MAC2STR(mgmt->sa), capab_info, listen_interval);
1281 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req));
1282 pos = mgmt->u.assoc_req.variable;
1283 }
1284
1285 sta = ap_get_sta(hapd, mgmt->sa);
1286 #ifdef CONFIG_IEEE80211R
1287 if (sta && sta->auth_alg == WLAN_AUTH_FT &&
1288 (sta->flags & WLAN_STA_AUTH) == 0) {
1289 wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate "
1290 "prior to authentication since it is using "
1291 "over-the-DS FT", MAC2STR(mgmt->sa));
1292 } else
1293 #endif /* CONFIG_IEEE80211R */
1294 if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
1295 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1296 HOSTAPD_LEVEL_INFO, "Station tried to "
1297 "associate before authentication "
1298 "(aid=%d flags=0x%x)",
1299 sta ? sta->aid : -1,
1300 sta ? sta->flags : 0);
1301 send_deauth(hapd, mgmt->sa,
1302 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA);
1303 return;
1304 }
1305
1306 if (hapd->tkip_countermeasures) {
1307 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
1308 goto fail;
1309 }
1310
1311 if (listen_interval > hapd->conf->max_listen_interval) {
1312 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1313 HOSTAPD_LEVEL_DEBUG,
1314 "Too large Listen Interval (%d)",
1315 listen_interval);
1316 resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE;
1317 goto fail;
1318 }
1319
1320 /* followed by SSID and Supported rates; and HT capabilities if 802.11n
1321 * is used */
1322 resp = check_assoc_ies(hapd, sta, pos, left, reassoc);
1323 if (resp != WLAN_STATUS_SUCCESS)
1324 goto fail;
1325
1326 if (hostapd_get_aid(hapd, sta) < 0) {
1327 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1328 HOSTAPD_LEVEL_INFO, "No room for more AIDs");
1329 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
1330 goto fail;
1331 }
1332
1333 sta->capability = capab_info;
1334 sta->listen_interval = listen_interval;
1335
1336 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
1337 sta->flags |= WLAN_STA_NONERP;
1338 for (i = 0; i < sta->supported_rates_len; i++) {
1339 if ((sta->supported_rates[i] & 0x7f) > 22) {
1340 sta->flags &= ~WLAN_STA_NONERP;
1341 break;
1342 }
1343 }
1344 if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) {
1345 sta->nonerp_set = 1;
1346 hapd->iface->num_sta_non_erp++;
1347 if (hapd->iface->num_sta_non_erp == 1)
1348 ieee802_11_set_beacons(hapd->iface);
1349 }
1350
1351 if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) &&
1352 !sta->no_short_slot_time_set) {
1353 sta->no_short_slot_time_set = 1;
1354 hapd->iface->num_sta_no_short_slot_time++;
1355 if (hapd->iface->current_mode->mode ==
1356 HOSTAPD_MODE_IEEE80211G &&
1357 hapd->iface->num_sta_no_short_slot_time == 1)
1358 ieee802_11_set_beacons(hapd->iface);
1359 }
1360
1361 if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1362 sta->flags |= WLAN_STA_SHORT_PREAMBLE;
1363 else
1364 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
1365
1366 if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
1367 !sta->no_short_preamble_set) {
1368 sta->no_short_preamble_set = 1;
1369 hapd->iface->num_sta_no_short_preamble++;
1370 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
1371 && hapd->iface->num_sta_no_short_preamble == 1)
1372 ieee802_11_set_beacons(hapd->iface);
1373 }
1374
1375 #ifdef CONFIG_IEEE80211N
1376 update_ht_state(hapd, sta);
1377 #endif /* CONFIG_IEEE80211N */
1378
1379 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1380 HOSTAPD_LEVEL_DEBUG,
1381 "association OK (aid %d)", sta->aid);
1382 /* Station will be marked associated, after it acknowledges AssocResp
1383 */
1384 sta->flags |= WLAN_STA_ASSOC_REQ_OK;
1385
1386 #ifdef CONFIG_IEEE80211W
1387 if ((sta->flags & WLAN_STA_MFP) && sta->sa_query_timed_out) {
1388 wpa_printf(MSG_DEBUG, "Allowing %sassociation after timed out "
1389 "SA Query procedure", reassoc ? "re" : "");
1390 /* TODO: Send a protected Disassociate frame to the STA using
1391 * the old key and Reason Code "Previous Authentication no
1392 * longer valid". Make sure this is only sent protected since
1393 * unprotected frame would be received by the STA that is now
1394 * trying to associate.
1395 */
1396 }
1397 #endif /* CONFIG_IEEE80211W */
1398
1399 if (reassoc) {
1400 os_memcpy(sta->previous_ap, mgmt->u.reassoc_req.current_ap,
1401 ETH_ALEN);
1402 }
1403
1404 if (sta->last_assoc_req)
1405 os_free(sta->last_assoc_req);
1406 sta->last_assoc_req = os_malloc(len);
1407 if (sta->last_assoc_req)
1408 os_memcpy(sta->last_assoc_req, mgmt, len);
1409
1410 /* Make sure that the previously registered inactivity timer will not
1411 * remove the STA immediately. */
1412 sta->timeout_next = STA_NULLFUNC;
1413
1414 fail:
1415 send_assoc_resp(hapd, sta, resp, reassoc, pos, left);
1416 }
1417
1418
handle_disassoc(struct hostapd_data * hapd,const struct ieee80211_mgmt * mgmt,size_t len)1419 static void handle_disassoc(struct hostapd_data *hapd,
1420 const struct ieee80211_mgmt *mgmt, size_t len)
1421 {
1422 struct sta_info *sta;
1423
1424 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) {
1425 printf("handle_disassoc - too short payload (len=%lu)\n",
1426 (unsigned long) len);
1427 return;
1428 }
1429
1430 wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d",
1431 MAC2STR(mgmt->sa),
1432 le_to_host16(mgmt->u.disassoc.reason_code));
1433
1434 sta = ap_get_sta(hapd, mgmt->sa);
1435 if (sta == NULL) {
1436 printf("Station " MACSTR " trying to disassociate, but it "
1437 "is not associated.\n", MAC2STR(mgmt->sa));
1438 return;
1439 }
1440
1441 ap_sta_set_authorized(hapd, sta, 0);
1442 sta->flags &= ~(WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK);
1443 wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
1444 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1445 HOSTAPD_LEVEL_INFO, "disassociated");
1446 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1447 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1448 /* Stop Accounting and IEEE 802.1X sessions, but leave the STA
1449 * authenticated. */
1450 accounting_sta_stop(hapd, sta);
1451 ieee802_1x_free_station(sta);
1452 hostapd_drv_sta_remove(hapd, sta->addr);
1453
1454 if (sta->timeout_next == STA_NULLFUNC ||
1455 sta->timeout_next == STA_DISASSOC) {
1456 sta->timeout_next = STA_DEAUTH;
1457 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1458 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
1459 hapd, sta);
1460 }
1461
1462 mlme_disassociate_indication(
1463 hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code));
1464 }
1465
1466
handle_deauth(struct hostapd_data * hapd,const struct ieee80211_mgmt * mgmt,size_t len)1467 static void handle_deauth(struct hostapd_data *hapd,
1468 const struct ieee80211_mgmt *mgmt, size_t len)
1469 {
1470 struct sta_info *sta;
1471
1472 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) {
1473 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "handle_deauth - too short "
1474 "payload (len=%lu)", (unsigned long) len);
1475 return;
1476 }
1477
1478 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "deauthentication: STA=" MACSTR
1479 " reason_code=%d",
1480 MAC2STR(mgmt->sa), le_to_host16(mgmt->u.deauth.reason_code));
1481
1482 sta = ap_get_sta(hapd, mgmt->sa);
1483 if (sta == NULL) {
1484 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR " trying "
1485 "to deauthenticate, but it is not authenticated",
1486 MAC2STR(mgmt->sa));
1487 return;
1488 }
1489
1490 ap_sta_set_authorized(hapd, sta, 0);
1491 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC |
1492 WLAN_STA_ASSOC_REQ_OK);
1493 wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
1494 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1495 HOSTAPD_LEVEL_DEBUG, "deauthenticated");
1496 mlme_deauthenticate_indication(
1497 hapd, sta, le_to_host16(mgmt->u.deauth.reason_code));
1498 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1499 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1500 ap_free_sta(hapd, sta);
1501 }
1502
1503
handle_beacon(struct hostapd_data * hapd,const struct ieee80211_mgmt * mgmt,size_t len,struct hostapd_frame_info * fi)1504 static void handle_beacon(struct hostapd_data *hapd,
1505 const struct ieee80211_mgmt *mgmt, size_t len,
1506 struct hostapd_frame_info *fi)
1507 {
1508 struct ieee802_11_elems elems;
1509
1510 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) {
1511 printf("handle_beacon - too short payload (len=%lu)\n",
1512 (unsigned long) len);
1513 return;
1514 }
1515
1516 (void) ieee802_11_parse_elems(mgmt->u.beacon.variable,
1517 len - (IEEE80211_HDRLEN +
1518 sizeof(mgmt->u.beacon)), &elems,
1519 0);
1520
1521 ap_list_process_beacon(hapd->iface, mgmt, &elems, fi);
1522 }
1523
1524
1525 #ifdef CONFIG_IEEE80211W
1526
hostapd_sa_query_action(struct hostapd_data * hapd,const struct ieee80211_mgmt * mgmt,size_t len)1527 static void hostapd_sa_query_action(struct hostapd_data *hapd,
1528 const struct ieee80211_mgmt *mgmt,
1529 size_t len)
1530 {
1531 const u8 *end;
1532
1533 end = mgmt->u.action.u.sa_query_resp.trans_id +
1534 WLAN_SA_QUERY_TR_ID_LEN;
1535 if (((u8 *) mgmt) + len < end) {
1536 wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short SA Query Action "
1537 "frame (len=%lu)", (unsigned long) len);
1538 return;
1539 }
1540
1541 ieee802_11_sa_query_action(hapd, mgmt->sa,
1542 mgmt->u.action.u.sa_query_resp.action,
1543 mgmt->u.action.u.sa_query_resp.trans_id);
1544 }
1545
1546
robust_action_frame(u8 category)1547 static int robust_action_frame(u8 category)
1548 {
1549 return category != WLAN_ACTION_PUBLIC &&
1550 category != WLAN_ACTION_HT;
1551 }
1552 #endif /* CONFIG_IEEE80211W */
1553
1554
1555 #ifdef CONFIG_WNM
hostapd_wnm_action(struct hostapd_data * hapd,struct sta_info * sta,const struct ieee80211_mgmt * mgmt,size_t len)1556 static void hostapd_wnm_action(struct hostapd_data *hapd, struct sta_info *sta,
1557 const struct ieee80211_mgmt *mgmt,
1558 size_t len)
1559 {
1560 struct rx_action action;
1561 if (len < IEEE80211_HDRLEN + 2)
1562 return;
1563 os_memset(&action, 0, sizeof(action));
1564 action.da = mgmt->da;
1565 action.sa = mgmt->sa;
1566 action.bssid = mgmt->bssid;
1567 action.category = mgmt->u.action.category;
1568 action.data = (const u8 *) &mgmt->u.action.u.wnm_sleep_req.action;
1569 action.len = len - IEEE80211_HDRLEN - 1;
1570 action.freq = hapd->iface->freq;
1571 ieee802_11_rx_wnm_action_ap(hapd, &action);
1572 }
1573 #endif /* CONFIG_WNM */
1574
1575
handle_action(struct hostapd_data * hapd,const struct ieee80211_mgmt * mgmt,size_t len)1576 static void handle_action(struct hostapd_data *hapd,
1577 const struct ieee80211_mgmt *mgmt, size_t len)
1578 {
1579 struct sta_info *sta;
1580 sta = ap_get_sta(hapd, mgmt->sa);
1581
1582 if (len < IEEE80211_HDRLEN + 1) {
1583 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1584 HOSTAPD_LEVEL_DEBUG,
1585 "handle_action - too short payload (len=%lu)",
1586 (unsigned long) len);
1587 return;
1588 }
1589
1590 if (mgmt->u.action.category != WLAN_ACTION_PUBLIC &&
1591 (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))) {
1592 wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored Action "
1593 "frame (category=%u) from unassociated STA " MACSTR,
1594 MAC2STR(mgmt->sa), mgmt->u.action.category);
1595 return;
1596 }
1597
1598 #ifdef CONFIG_IEEE80211W
1599 if (sta && (sta->flags & WLAN_STA_MFP) &&
1600 !(mgmt->frame_control & host_to_le16(WLAN_FC_ISWEP) &&
1601 robust_action_frame(mgmt->u.action.category))) {
1602 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1603 HOSTAPD_LEVEL_DEBUG,
1604 "Dropped unprotected Robust Action frame from "
1605 "an MFP STA");
1606 return;
1607 }
1608 #endif /* CONFIG_IEEE80211W */
1609
1610 switch (mgmt->u.action.category) {
1611 #ifdef CONFIG_IEEE80211R
1612 case WLAN_ACTION_FT:
1613 if (wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action,
1614 len - IEEE80211_HDRLEN))
1615 break;
1616 return;
1617 #endif /* CONFIG_IEEE80211R */
1618 case WLAN_ACTION_WMM:
1619 hostapd_wmm_action(hapd, mgmt, len);
1620 return;
1621 #ifdef CONFIG_IEEE80211W
1622 case WLAN_ACTION_SA_QUERY:
1623 hostapd_sa_query_action(hapd, mgmt, len);
1624 return;
1625 #endif /* CONFIG_IEEE80211W */
1626 #ifdef CONFIG_WNM
1627 case WLAN_ACTION_WNM:
1628 hostapd_wnm_action(hapd, sta, mgmt, len);
1629 return;
1630 #endif /* CONFIG_WNM */
1631 case WLAN_ACTION_PUBLIC:
1632 if (hapd->public_action_cb) {
1633 hapd->public_action_cb(hapd->public_action_cb_ctx,
1634 (u8 *) mgmt, len,
1635 hapd->iface->freq);
1636 }
1637 if (hapd->public_action_cb2) {
1638 hapd->public_action_cb2(hapd->public_action_cb2_ctx,
1639 (u8 *) mgmt, len,
1640 hapd->iface->freq);
1641 }
1642 if (hapd->public_action_cb || hapd->public_action_cb2)
1643 return;
1644 break;
1645 case WLAN_ACTION_VENDOR_SPECIFIC:
1646 if (hapd->vendor_action_cb) {
1647 if (hapd->vendor_action_cb(hapd->vendor_action_cb_ctx,
1648 (u8 *) mgmt, len,
1649 hapd->iface->freq) == 0)
1650 return;
1651 }
1652 break;
1653 }
1654
1655 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1656 HOSTAPD_LEVEL_DEBUG,
1657 "handle_action - unknown action category %d or invalid "
1658 "frame",
1659 mgmt->u.action.category);
1660 if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) &&
1661 !(mgmt->sa[0] & 0x01)) {
1662 struct ieee80211_mgmt *resp;
1663
1664 /*
1665 * IEEE 802.11-REVma/D9.0 - 7.3.1.11
1666 * Return the Action frame to the source without change
1667 * except that MSB of the Category set to 1.
1668 */
1669 wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action "
1670 "frame back to sender");
1671 resp = os_malloc(len);
1672 if (resp == NULL)
1673 return;
1674 os_memcpy(resp, mgmt, len);
1675 os_memcpy(resp->da, resp->sa, ETH_ALEN);
1676 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
1677 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
1678 resp->u.action.category |= 0x80;
1679
1680 if (hostapd_drv_send_mlme(hapd, resp, len, 0) < 0) {
1681 wpa_printf(MSG_ERROR, "IEEE 802.11: Failed to send "
1682 "Action frame");
1683 }
1684 os_free(resp);
1685 }
1686 }
1687
1688
1689 /**
1690 * ieee802_11_mgmt - process incoming IEEE 802.11 management frames
1691 * @hapd: hostapd BSS data structure (the BSS to which the management frame was
1692 * sent to)
1693 * @buf: management frame data (starting from IEEE 802.11 header)
1694 * @len: length of frame data in octets
1695 * @fi: meta data about received frame (signal level, etc.)
1696 *
1697 * Process all incoming IEEE 802.11 management frames. This will be called for
1698 * each frame received from the kernel driver through wlan#ap interface. In
1699 * addition, it can be called to re-inserted pending frames (e.g., when using
1700 * external RADIUS server as an MAC ACL).
1701 */
ieee802_11_mgmt(struct hostapd_data * hapd,const u8 * buf,size_t len,struct hostapd_frame_info * fi)1702 void ieee802_11_mgmt(struct hostapd_data *hapd, const u8 *buf, size_t len,
1703 struct hostapd_frame_info *fi)
1704 {
1705 struct ieee80211_mgmt *mgmt;
1706 int broadcast;
1707 u16 fc, stype;
1708
1709 if (len < 24)
1710 return;
1711
1712 mgmt = (struct ieee80211_mgmt *) buf;
1713 fc = le_to_host16(mgmt->frame_control);
1714 stype = WLAN_FC_GET_STYPE(fc);
1715
1716 if (stype == WLAN_FC_STYPE_BEACON) {
1717 handle_beacon(hapd, mgmt, len, fi);
1718 return;
1719 }
1720
1721 broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff &&
1722 mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff &&
1723 mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff;
1724
1725 if (!broadcast &&
1726 #ifdef CONFIG_P2P
1727 /* Invitation responses can be sent with the peer MAC as BSSID */
1728 !((hapd->conf->p2p & P2P_GROUP_OWNER) &&
1729 stype == WLAN_FC_STYPE_ACTION) &&
1730 #endif /* CONFIG_P2P */
1731 os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) {
1732 printf("MGMT: BSSID=" MACSTR " not our address\n",
1733 MAC2STR(mgmt->bssid));
1734 return;
1735 }
1736
1737
1738 if (stype == WLAN_FC_STYPE_PROBE_REQ) {
1739 handle_probe_req(hapd, mgmt, len, fi->ssi_signal);
1740 return;
1741 }
1742
1743 if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) {
1744 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1745 HOSTAPD_LEVEL_DEBUG,
1746 "MGMT: DA=" MACSTR " not our address",
1747 MAC2STR(mgmt->da));
1748 return;
1749 }
1750
1751 switch (stype) {
1752 case WLAN_FC_STYPE_AUTH:
1753 wpa_printf(MSG_DEBUG, "mgmt::auth");
1754 handle_auth(hapd, mgmt, len);
1755 break;
1756 case WLAN_FC_STYPE_ASSOC_REQ:
1757 wpa_printf(MSG_DEBUG, "mgmt::assoc_req");
1758 handle_assoc(hapd, mgmt, len, 0);
1759 break;
1760 case WLAN_FC_STYPE_REASSOC_REQ:
1761 wpa_printf(MSG_DEBUG, "mgmt::reassoc_req");
1762 handle_assoc(hapd, mgmt, len, 1);
1763 break;
1764 case WLAN_FC_STYPE_DISASSOC:
1765 wpa_printf(MSG_DEBUG, "mgmt::disassoc");
1766 handle_disassoc(hapd, mgmt, len);
1767 break;
1768 case WLAN_FC_STYPE_DEAUTH:
1769 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "mgmt::deauth");
1770 handle_deauth(hapd, mgmt, len);
1771 break;
1772 case WLAN_FC_STYPE_ACTION:
1773 wpa_printf(MSG_DEBUG, "mgmt::action");
1774 handle_action(hapd, mgmt, len);
1775 break;
1776 default:
1777 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1778 HOSTAPD_LEVEL_DEBUG,
1779 "unknown mgmt frame subtype %d", stype);
1780 break;
1781 }
1782 }
1783
1784
handle_auth_cb(struct hostapd_data * hapd,const struct ieee80211_mgmt * mgmt,size_t len,int ok)1785 static void handle_auth_cb(struct hostapd_data *hapd,
1786 const struct ieee80211_mgmt *mgmt,
1787 size_t len, int ok)
1788 {
1789 u16 auth_alg, auth_transaction, status_code;
1790 struct sta_info *sta;
1791
1792 if (!ok) {
1793 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1794 HOSTAPD_LEVEL_NOTICE,
1795 "did not acknowledge authentication response");
1796 return;
1797 }
1798
1799 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
1800 printf("handle_auth_cb - too short payload (len=%lu)\n",
1801 (unsigned long) len);
1802 return;
1803 }
1804
1805 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
1806 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
1807 status_code = le_to_host16(mgmt->u.auth.status_code);
1808
1809 sta = ap_get_sta(hapd, mgmt->da);
1810 if (!sta) {
1811 printf("handle_auth_cb: STA " MACSTR " not found\n",
1812 MAC2STR(mgmt->da));
1813 return;
1814 }
1815
1816 if (status_code == WLAN_STATUS_SUCCESS &&
1817 ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
1818 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
1819 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1820 HOSTAPD_LEVEL_INFO, "authenticated");
1821 sta->flags |= WLAN_STA_AUTH;
1822 }
1823 }
1824
1825
hostapd_set_wds_encryption(struct hostapd_data * hapd,struct sta_info * sta,char * ifname_wds)1826 static void hostapd_set_wds_encryption(struct hostapd_data *hapd,
1827 struct sta_info *sta,
1828 char *ifname_wds)
1829 {
1830 int i;
1831 struct hostapd_ssid *ssid = sta->ssid;
1832
1833 if (hapd->conf->ieee802_1x || hapd->conf->wpa)
1834 return;
1835
1836 for (i = 0; i < 4; i++) {
1837 if (ssid->wep.key[i] &&
1838 hostapd_drv_set_key(ifname_wds, hapd, WPA_ALG_WEP, NULL, i,
1839 i == ssid->wep.idx, NULL, 0,
1840 ssid->wep.key[i], ssid->wep.len[i])) {
1841 wpa_printf(MSG_WARNING,
1842 "Could not set WEP keys for WDS interface; %s",
1843 ifname_wds);
1844 break;
1845 }
1846 }
1847 }
1848
1849
handle_assoc_cb(struct hostapd_data * hapd,const struct ieee80211_mgmt * mgmt,size_t len,int reassoc,int ok)1850 static void handle_assoc_cb(struct hostapd_data *hapd,
1851 const struct ieee80211_mgmt *mgmt,
1852 size_t len, int reassoc, int ok)
1853 {
1854 u16 status;
1855 struct sta_info *sta;
1856 int new_assoc = 1;
1857 struct ieee80211_ht_capabilities ht_cap;
1858 struct ieee80211_vht_capabilities vht_cap;
1859
1860 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) :
1861 sizeof(mgmt->u.assoc_resp))) {
1862 printf("handle_assoc_cb(reassoc=%d) - too short payload "
1863 "(len=%lu)\n", reassoc, (unsigned long) len);
1864 return;
1865 }
1866
1867 sta = ap_get_sta(hapd, mgmt->da);
1868 if (!sta) {
1869 printf("handle_assoc_cb: STA " MACSTR " not found\n",
1870 MAC2STR(mgmt->da));
1871 return;
1872 }
1873
1874 if (!ok) {
1875 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1876 HOSTAPD_LEVEL_DEBUG,
1877 "did not acknowledge association response");
1878 sta->flags &= ~WLAN_STA_ASSOC_REQ_OK;
1879 return;
1880 }
1881
1882 if (reassoc)
1883 status = le_to_host16(mgmt->u.reassoc_resp.status_code);
1884 else
1885 status = le_to_host16(mgmt->u.assoc_resp.status_code);
1886
1887 if (status != WLAN_STATUS_SUCCESS)
1888 goto fail;
1889
1890 /* Stop previous accounting session, if one is started, and allocate
1891 * new session id for the new session. */
1892 accounting_sta_stop(hapd, sta);
1893
1894 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1895 HOSTAPD_LEVEL_INFO,
1896 "associated (aid %d)",
1897 sta->aid);
1898
1899 if (sta->flags & WLAN_STA_ASSOC)
1900 new_assoc = 0;
1901 sta->flags |= WLAN_STA_ASSOC;
1902 if ((!hapd->conf->ieee802_1x && !hapd->conf->wpa) ||
1903 sta->auth_alg == WLAN_AUTH_FT) {
1904 /*
1905 * Open, static WEP, or FT protocol; no separate authorization
1906 * step.
1907 */
1908 ap_sta_set_authorized(hapd, sta, 1);
1909 }
1910
1911 if (reassoc)
1912 mlme_reassociate_indication(hapd, sta);
1913 else
1914 mlme_associate_indication(hapd, sta);
1915
1916 #ifdef CONFIG_IEEE80211W
1917 sta->sa_query_timed_out = 0;
1918 #endif /* CONFIG_IEEE80211W */
1919
1920 /*
1921 * Remove the STA entry in order to make sure the STA PS state gets
1922 * cleared and configuration gets updated in case of reassociation back
1923 * to the same AP.
1924 */
1925 hostapd_drv_sta_remove(hapd, sta->addr);
1926
1927 #ifdef CONFIG_IEEE80211N
1928 if (sta->flags & WLAN_STA_HT)
1929 hostapd_get_ht_capab(hapd, sta->ht_capabilities, &ht_cap);
1930 #endif /* CONFIG_IEEE80211N */
1931 #ifdef CONFIG_IEEE80211AC
1932 if (sta->flags & WLAN_STA_VHT)
1933 hostapd_get_vht_capab(hapd, sta->vht_capabilities, &vht_cap);
1934 #endif /* CONFIG_IEEE80211AC */
1935
1936 if (hostapd_sta_add(hapd, sta->addr, sta->aid, sta->capability,
1937 sta->supported_rates, sta->supported_rates_len,
1938 sta->listen_interval,
1939 sta->flags & WLAN_STA_HT ? &ht_cap : NULL,
1940 sta->flags & WLAN_STA_VHT ? &vht_cap : NULL,
1941 sta->flags, sta->qosinfo)) {
1942 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1943 HOSTAPD_LEVEL_NOTICE,
1944 "Could not add STA to kernel driver");
1945
1946 ap_sta_disconnect(hapd, sta, sta->addr,
1947 WLAN_REASON_DISASSOC_AP_BUSY);
1948
1949 goto fail;
1950 }
1951
1952 if (sta->flags & WLAN_STA_WDS) {
1953 int ret;
1954 char ifname_wds[IFNAMSIZ + 1];
1955
1956 ret = hostapd_set_wds_sta(hapd, ifname_wds, sta->addr,
1957 sta->aid, 1);
1958 if (!ret)
1959 hostapd_set_wds_encryption(hapd, sta, ifname_wds);
1960 }
1961
1962 if (sta->eapol_sm == NULL) {
1963 /*
1964 * This STA does not use RADIUS server for EAP authentication,
1965 * so bind it to the selected VLAN interface now, since the
1966 * interface selection is not going to change anymore.
1967 */
1968 if (ap_sta_bind_vlan(hapd, sta, 0) < 0)
1969 goto fail;
1970 } else if (sta->vlan_id) {
1971 /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */
1972 if (ap_sta_bind_vlan(hapd, sta, 0) < 0)
1973 goto fail;
1974 }
1975
1976 hostapd_set_sta_flags(hapd, sta);
1977
1978 if (sta->auth_alg == WLAN_AUTH_FT)
1979 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
1980 else
1981 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
1982 hapd->new_assoc_sta_cb(hapd, sta, !new_assoc);
1983
1984 ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
1985
1986 fail:
1987 /* Copy of the association request is not needed anymore */
1988 if (sta->last_assoc_req) {
1989 os_free(sta->last_assoc_req);
1990 sta->last_assoc_req = NULL;
1991 }
1992 }
1993
1994
handle_deauth_cb(struct hostapd_data * hapd,const struct ieee80211_mgmt * mgmt,size_t len,int ok)1995 static void handle_deauth_cb(struct hostapd_data *hapd,
1996 const struct ieee80211_mgmt *mgmt,
1997 size_t len, int ok)
1998 {
1999 struct sta_info *sta;
2000 if (mgmt->da[0] & 0x01)
2001 return;
2002 sta = ap_get_sta(hapd, mgmt->da);
2003 if (!sta) {
2004 wpa_printf(MSG_DEBUG, "handle_deauth_cb: STA " MACSTR
2005 " not found", MAC2STR(mgmt->da));
2006 return;
2007 }
2008 if (ok)
2009 wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged deauth",
2010 MAC2STR(sta->addr));
2011 else
2012 wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge "
2013 "deauth", MAC2STR(sta->addr));
2014
2015 ap_sta_deauth_cb(hapd, sta);
2016 }
2017
2018
handle_disassoc_cb(struct hostapd_data * hapd,const struct ieee80211_mgmt * mgmt,size_t len,int ok)2019 static void handle_disassoc_cb(struct hostapd_data *hapd,
2020 const struct ieee80211_mgmt *mgmt,
2021 size_t len, int ok)
2022 {
2023 struct sta_info *sta;
2024 if (mgmt->da[0] & 0x01)
2025 return;
2026 sta = ap_get_sta(hapd, mgmt->da);
2027 if (!sta) {
2028 wpa_printf(MSG_DEBUG, "handle_disassoc_cb: STA " MACSTR
2029 " not found", MAC2STR(mgmt->da));
2030 return;
2031 }
2032 if (ok)
2033 wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged disassoc",
2034 MAC2STR(sta->addr));
2035 else
2036 wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge "
2037 "disassoc", MAC2STR(sta->addr));
2038
2039 ap_sta_disassoc_cb(hapd, sta);
2040 }
2041
2042
2043 /**
2044 * ieee802_11_mgmt_cb - Process management frame TX status callback
2045 * @hapd: hostapd BSS data structure (the BSS from which the management frame
2046 * was sent from)
2047 * @buf: management frame data (starting from IEEE 802.11 header)
2048 * @len: length of frame data in octets
2049 * @stype: management frame subtype from frame control field
2050 * @ok: Whether the frame was ACK'ed
2051 */
ieee802_11_mgmt_cb(struct hostapd_data * hapd,const u8 * buf,size_t len,u16 stype,int ok)2052 void ieee802_11_mgmt_cb(struct hostapd_data *hapd, const u8 *buf, size_t len,
2053 u16 stype, int ok)
2054 {
2055 const struct ieee80211_mgmt *mgmt;
2056 mgmt = (const struct ieee80211_mgmt *) buf;
2057
2058 switch (stype) {
2059 case WLAN_FC_STYPE_AUTH:
2060 wpa_printf(MSG_DEBUG, "mgmt::auth cb");
2061 handle_auth_cb(hapd, mgmt, len, ok);
2062 break;
2063 case WLAN_FC_STYPE_ASSOC_RESP:
2064 wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb");
2065 handle_assoc_cb(hapd, mgmt, len, 0, ok);
2066 break;
2067 case WLAN_FC_STYPE_REASSOC_RESP:
2068 wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb");
2069 handle_assoc_cb(hapd, mgmt, len, 1, ok);
2070 break;
2071 case WLAN_FC_STYPE_PROBE_RESP:
2072 wpa_printf(MSG_EXCESSIVE, "mgmt::proberesp cb");
2073 break;
2074 case WLAN_FC_STYPE_DEAUTH:
2075 wpa_printf(MSG_DEBUG, "mgmt::deauth cb");
2076 handle_deauth_cb(hapd, mgmt, len, ok);
2077 break;
2078 case WLAN_FC_STYPE_DISASSOC:
2079 wpa_printf(MSG_DEBUG, "mgmt::disassoc cb");
2080 handle_disassoc_cb(hapd, mgmt, len, ok);
2081 break;
2082 case WLAN_FC_STYPE_ACTION:
2083 wpa_printf(MSG_DEBUG, "mgmt::action cb");
2084 break;
2085 default:
2086 printf("unknown mgmt cb frame subtype %d\n", stype);
2087 break;
2088 }
2089 }
2090
2091
ieee802_11_get_mib(struct hostapd_data * hapd,char * buf,size_t buflen)2092 int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
2093 {
2094 /* TODO */
2095 return 0;
2096 }
2097
2098
ieee802_11_get_mib_sta(struct hostapd_data * hapd,struct sta_info * sta,char * buf,size_t buflen)2099 int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
2100 char *buf, size_t buflen)
2101 {
2102 /* TODO */
2103 return 0;
2104 }
2105
2106
hostapd_tx_status(struct hostapd_data * hapd,const u8 * addr,const u8 * buf,size_t len,int ack)2107 void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr,
2108 const u8 *buf, size_t len, int ack)
2109 {
2110 struct sta_info *sta;
2111 struct hostapd_iface *iface = hapd->iface;
2112
2113 sta = ap_get_sta(hapd, addr);
2114 if (sta == NULL && iface->num_bss > 1) {
2115 size_t j;
2116 for (j = 0; j < iface->num_bss; j++) {
2117 hapd = iface->bss[j];
2118 sta = ap_get_sta(hapd, addr);
2119 if (sta)
2120 break;
2121 }
2122 }
2123 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))
2124 return;
2125 if (sta->flags & WLAN_STA_PENDING_POLL) {
2126 wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
2127 "activity poll", MAC2STR(sta->addr),
2128 ack ? "ACKed" : "did not ACK");
2129 if (ack)
2130 sta->flags &= ~WLAN_STA_PENDING_POLL;
2131 }
2132
2133 ieee802_1x_tx_status(hapd, sta, buf, len, ack);
2134 }
2135
2136
hostapd_eapol_tx_status(struct hostapd_data * hapd,const u8 * dst,const u8 * data,size_t len,int ack)2137 void hostapd_eapol_tx_status(struct hostapd_data *hapd, const u8 *dst,
2138 const u8 *data, size_t len, int ack)
2139 {
2140 struct sta_info *sta;
2141 struct hostapd_iface *iface = hapd->iface;
2142
2143 sta = ap_get_sta(hapd, dst);
2144 if (sta == NULL && iface->num_bss > 1) {
2145 size_t j;
2146 for (j = 0; j < iface->num_bss; j++) {
2147 hapd = iface->bss[j];
2148 sta = ap_get_sta(hapd, dst);
2149 if (sta)
2150 break;
2151 }
2152 }
2153 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
2154 wpa_printf(MSG_DEBUG, "Ignore TX status for Data frame to STA "
2155 MACSTR " that is not currently associated",
2156 MAC2STR(dst));
2157 return;
2158 }
2159
2160 ieee802_1x_eapol_tx_status(hapd, sta, data, len, ack);
2161 }
2162
2163
hostapd_client_poll_ok(struct hostapd_data * hapd,const u8 * addr)2164 void hostapd_client_poll_ok(struct hostapd_data *hapd, const u8 *addr)
2165 {
2166 struct sta_info *sta;
2167 struct hostapd_iface *iface = hapd->iface;
2168
2169 sta = ap_get_sta(hapd, addr);
2170 if (sta == NULL && iface->num_bss > 1) {
2171 size_t j;
2172 for (j = 0; j < iface->num_bss; j++) {
2173 hapd = iface->bss[j];
2174 sta = ap_get_sta(hapd, addr);
2175 if (sta)
2176 break;
2177 }
2178 }
2179 if (sta == NULL)
2180 return;
2181 if (!(sta->flags & WLAN_STA_PENDING_POLL))
2182 return;
2183
2184 wpa_printf(MSG_DEBUG, "STA " MACSTR " ACKed pending "
2185 "activity poll", MAC2STR(sta->addr));
2186 sta->flags &= ~WLAN_STA_PENDING_POLL;
2187 }
2188
2189
ieee802_11_rx_from_unknown(struct hostapd_data * hapd,const u8 * src,int wds)2190 void ieee802_11_rx_from_unknown(struct hostapd_data *hapd, const u8 *src,
2191 int wds)
2192 {
2193 struct sta_info *sta;
2194
2195 sta = ap_get_sta(hapd, src);
2196 if (sta && (sta->flags & WLAN_STA_ASSOC)) {
2197 if (!hapd->conf->wds_sta)
2198 return;
2199
2200 if (wds && !(sta->flags & WLAN_STA_WDS)) {
2201 int ret;
2202 char ifname_wds[IFNAMSIZ + 1];
2203
2204 wpa_printf(MSG_DEBUG, "Enable 4-address WDS mode for "
2205 "STA " MACSTR " (aid %u)",
2206 MAC2STR(sta->addr), sta->aid);
2207 sta->flags |= WLAN_STA_WDS;
2208 ret = hostapd_set_wds_sta(hapd, ifname_wds,
2209 sta->addr, sta->aid, 1);
2210 if (!ret)
2211 hostapd_set_wds_encryption(hapd, sta,
2212 ifname_wds);
2213 }
2214 return;
2215 }
2216
2217 wpa_printf(MSG_DEBUG, "Data/PS-poll frame from not associated STA "
2218 MACSTR, MAC2STR(src));
2219 if (src[0] & 0x01) {
2220 /* Broadcast bit set in SA?! Ignore the frame silently. */
2221 return;
2222 }
2223
2224 if (sta && (sta->flags & WLAN_STA_ASSOC_REQ_OK)) {
2225 wpa_printf(MSG_DEBUG, "Association Response to the STA has "
2226 "already been sent, but no TX status yet known - "
2227 "ignore Class 3 frame issue with " MACSTR,
2228 MAC2STR(src));
2229 return;
2230 }
2231
2232 if (sta && (sta->flags & WLAN_STA_AUTH))
2233 hostapd_drv_sta_disassoc(
2234 hapd, src,
2235 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
2236 else
2237 hostapd_drv_sta_deauth(
2238 hapd, src,
2239 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
2240 }
2241
2242
2243 #endif /* CONFIG_NATIVE_WINDOWS */
2244