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