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[thirdparty/hostap.git] / src / ap / ieee802_11.c
CommitLineData
6fc6879b
JM		 1/*
2 * hostapd / IEEE 802.11 Management
ef580012 3 * Copyright (c) 2002-2010, Jouni Malinen <j@w1.fi>
6fc6879b
JM		 4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 */
14
1057d78e 15#include "utils/includes.h"
6fc6879b
JM		 16
17#ifndef CONFIG_NATIVE_WINDOWS
18
1057d78e
JM		 19#include "utils/common.h"
20#include "utils/eloop.h"
03da66bd 21#include "crypto/crypto.h"
2ce86d9d 22#include "drivers/driver.h"
81f4f619
JM		 23#include "common/ieee802_11_defs.h"
24#include "common/ieee802_11_common.h"
03da66bd
JM		 25#include "common/wpa_ctrl.h"
26#include "radius/radius.h"
27#include "radius/radius_client.h"
ed7a09f9 28#include "wps/wps.h"
6fc6879b 29#include "hostapd.h"
6fc6879b 30#include "beacon.h"
6fc6879b
JM		 31#include "ieee802_11_auth.h"
32#include "sta_info.h"
6fc6879b 33#include "ieee802_1x.h"
6226e38d 34#include "wpa_auth.h"
1057d78e 35#include "wmm.h"
6fc6879b
JM		 36#include "ap_list.h"
37#include "accounting.h"
6226e38d
JM		 38#include "ap_config.h"
39#include "ap_mlme.h"
40#include "ieee802_11.h"
6fc6879b
JM		 41
42
43u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid)
44{
45 u8 *pos = eid;
46 int i, num, count;
47
48 if (hapd->iface->current_rates == NULL)
49 return eid;
50
51 *pos++ = WLAN_EID_SUPP_RATES;
52 num = hapd->iface->num_rates;
53 if (num > 8) {
54 /* rest of the rates are encoded in Extended supported
55 * rates element */
56 num = 8;
57 }
58
59 *pos++ = num;
60 count = 0;
61 for (i = 0, count = 0; i < hapd->iface->num_rates && count < num;
62 i++) {
63 count++;
64 *pos = hapd->iface->current_rates[i].rate / 5;
65 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
66 *pos |= 0x80;
67 pos++;
68 }
69
70 return pos;
71}
72
73
74u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid)
75{
76 u8 *pos = eid;
77 int i, num, count;
78
79 if (hapd->iface->current_rates == NULL)
80 return eid;
81
82 num = hapd->iface->num_rates;
83 if (num <= 8)
84 return eid;
85 num -= 8;
86
87 *pos++ = WLAN_EID_EXT_SUPP_RATES;
88 *pos++ = num;
89 count = 0;
90 for (i = 0, count = 0; i < hapd->iface->num_rates && count < num + 8;
91 i++) {
92 count++;
93 if (count <= 8)
94 continue; /* already in SuppRates IE */
95 *pos = hapd->iface->current_rates[i].rate / 5;
96 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
97 *pos |= 0x80;
98 pos++;
99 }
100
101 return pos;
102}
103
104
105u16 hostapd_own_capab_info(struct hostapd_data *hapd, struct sta_info *sta,
106 int probe)
107{
108 int capab = WLAN_CAPABILITY_ESS;
109 int privacy;
110
111 if (hapd->iface->num_sta_no_short_preamble == 0 &&
112 hapd->iconf->preamble == SHORT_PREAMBLE)
113 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
114
115 privacy = hapd->conf->ssid.wep.keys_set;
116
117 if (hapd->conf->ieee802_1x &&
118 (hapd->conf->default_wep_key_len ||
119 hapd->conf->individual_wep_key_len))
120 privacy = 1;
121
122 if (hapd->conf->wpa)
123 privacy = 1;
124
125 if (sta) {
126 int policy, def_klen;
127 if (probe && sta->ssid_probe) {
128 policy = sta->ssid_probe->security_policy;
129 def_klen = sta->ssid_probe->wep.default_len;
130 } else {
131 policy = sta->ssid->security_policy;
132 def_klen = sta->ssid->wep.default_len;
133 }
134 privacy = policy != SECURITY_PLAINTEXT;
135 if (policy == SECURITY_IEEE_802_1X && def_klen == 0)
136 privacy = 0;
137 }
138
139 if (privacy)
140 capab |= WLAN_CAPABILITY_PRIVACY;
141
142 if (hapd->iface->current_mode &&
143 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G &&
144 hapd->iface->num_sta_no_short_slot_time == 0)
145 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
146
6fc6879b
JM		 147 return capab;
148}
149
150
5d22a1d5
JM		 151#ifdef CONFIG_IEEE80211W
152static u8 * hostapd_eid_assoc_comeback_time(struct hostapd_data *hapd,
153 struct sta_info *sta, u8 *eid)
154{
155 u8 *pos = eid;
45c94154
JM		 156 u32 timeout, tu;
157 struct os_time now, passed;
5d22a1d5 158
adddffd1
JM		 159 *pos++ = WLAN_EID_TIMEOUT_INTERVAL;
160 *pos++ = 5;
161 *pos++ = WLAN_TIMEOUT_ASSOC_COMEBACK;
45c94154
JM		 162 os_get_time(&now);
163 os_time_sub(&now, &sta->sa_query_start, &passed);
164 tu = (passed.sec * 1000000 + passed.usec) / 1024;
165 if (hapd->conf->assoc_sa_query_max_timeout > tu)
166 timeout = hapd->conf->assoc_sa_query_max_timeout - tu;
167 else
168 timeout = 0;
169 if (timeout < hapd->conf->assoc_sa_query_max_timeout)
170 timeout++; /* add some extra time for local timers */
5d22a1d5
JM		 171 WPA_PUT_LE32(pos, timeout);
172 pos += 4;
173
174 return pos;
175}
176#endif /* CONFIG_IEEE80211W */
177
178
6fc6879b
JM		 179void ieee802_11_print_ssid(char *buf, const u8 *ssid, u8 len)
180{
181 int i;
182 if (len > HOSTAPD_MAX_SSID_LEN)
183 len = HOSTAPD_MAX_SSID_LEN;
184 for (i = 0; i < len; i++) {
185 if (ssid[i] >= 32 && ssid[i] < 127)
186 buf[i] = ssid[i];
187 else
188 buf[i] = '.';
189 }
190 buf[len] = '\0';
191}
192
193
6fc6879b 194static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta,
b57e086c
JM		 195 u16 auth_transaction, const u8 *challenge,
196 int iswep)
6fc6879b
JM		 197{
198 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
199 HOSTAPD_LEVEL_DEBUG,
200 "authentication (shared key, transaction %d)",
201 auth_transaction);
202
203 if (auth_transaction == 1) {
204 if (!sta->challenge) {
205 /* Generate a pseudo-random challenge */
206 u8 key[8];
207 time_t now;
208 int r;
209 sta->challenge = os_zalloc(WLAN_AUTH_CHALLENGE_LEN);
210 if (sta->challenge == NULL)
211 return WLAN_STATUS_UNSPECIFIED_FAILURE;
212
213 now = time(NULL);
214 r = random();
215 os_memcpy(key, &now, 4);
216 os_memcpy(key + 4, &r, 4);
8ef16831
JM		 217 rc4_skip(key, sizeof(key), 0,
218 sta->challenge, WLAN_AUTH_CHALLENGE_LEN);
6fc6879b
JM		 219 }
220 return 0;
221 }
222
223 if (auth_transaction != 3)
224 return WLAN_STATUS_UNSPECIFIED_FAILURE;
225
226 /* Transaction 3 */
227 if (!iswep || !sta->challenge || !challenge ||
228 os_memcmp(sta->challenge, challenge, WLAN_AUTH_CHALLENGE_LEN)) {
229 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
230 HOSTAPD_LEVEL_INFO,
231 "shared key authentication - invalid "
232 "challenge-response");
233 return WLAN_STATUS_CHALLENGE_FAIL;
234 }
235
236 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
237 HOSTAPD_LEVEL_DEBUG,
238 "authentication OK (shared key)");
239#ifdef IEEE80211_REQUIRE_AUTH_ACK
240 /* Station will be marked authenticated if it ACKs the
241 * authentication reply. */
242#else
243 sta->flags |= WLAN_STA_AUTH;
244 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
245#endif
246 os_free(sta->challenge);
247 sta->challenge = NULL;
248
249 return 0;
250}
251
252
253static void send_auth_reply(struct hostapd_data *hapd,
254 const u8 *dst, const u8 *bssid,
255 u16 auth_alg, u16 auth_transaction, u16 resp,
256 const u8 *ies, size_t ies_len)
257{
258 struct ieee80211_mgmt *reply;
259 u8 *buf;
260 size_t rlen;
261
262 rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth) + ies_len;
263 buf = os_zalloc(rlen);
264 if (buf == NULL)
265 return;
266
267 reply = (struct ieee80211_mgmt *) buf;
268 reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
269 WLAN_FC_STYPE_AUTH);
6fc6879b
JM		 270 os_memcpy(reply->da, dst, ETH_ALEN);
271 os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
272 os_memcpy(reply->bssid, bssid, ETH_ALEN);
273
274 reply->u.auth.auth_alg = host_to_le16(auth_alg);
275 reply->u.auth.auth_transaction = host_to_le16(auth_transaction);
276 reply->u.auth.status_code = host_to_le16(resp);
277
278 if (ies && ies_len)
279 os_memcpy(reply->u.auth.variable, ies, ies_len);
280
281 wpa_printf(MSG_DEBUG, "authentication reply: STA=" MACSTR
282 " auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu)",
283 MAC2STR(dst), auth_alg, auth_transaction,
284 resp, (unsigned long) ies_len);
c90933d2 285 if (hapd->drv.send_mgmt_frame(hapd, reply, rlen) < 0)
6fc6879b
JM		 286 perror("send_auth_reply: send");
287
288 os_free(buf);
289}
290
291
292#ifdef CONFIG_IEEE80211R
293static void handle_auth_ft_finish(void *ctx, const u8 *dst, const u8 *bssid,
294 u16 auth_transaction, u16 status,
295 const u8 *ies, size_t ies_len)
296{
297 struct hostapd_data *hapd = ctx;
298 struct sta_info *sta;
299
300 send_auth_reply(hapd, dst, bssid, WLAN_AUTH_FT, auth_transaction,
301 status, ies, ies_len);
302
303 if (status != WLAN_STATUS_SUCCESS)
304 return;
305
306 sta = ap_get_sta(hapd, dst);
307 if (sta == NULL)
308 return;
309
310 hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211,
311 HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)");
312 sta->flags |= WLAN_STA_AUTH;
313 mlme_authenticate_indication(hapd, sta);
314}
315#endif /* CONFIG_IEEE80211R */
316
317
b57e086c
JM		 318static void handle_auth(struct hostapd_data *hapd,
319 const struct ieee80211_mgmt *mgmt, size_t len)
6fc6879b
JM		 320{
321 u16 auth_alg, auth_transaction, status_code;
322 u16 resp = WLAN_STATUS_SUCCESS;
323 struct sta_info *sta = NULL;
324 int res;
325 u16 fc;
b57e086c 326 const u8 *challenge = NULL;
6fc6879b
JM		 327 u32 session_timeout, acct_interim_interval;
328 int vlan_id = 0;
329 u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN];
330 size_t resp_ies_len = 0;
331
332 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
333 printf("handle_auth - too short payload (len=%lu)\n",
334 (unsigned long) len);
335 return;
336 }
337
338 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
339 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
340 status_code = le_to_host16(mgmt->u.auth.status_code);
341 fc = le_to_host16(mgmt->frame_control);
342
343 if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) +
344 2 + WLAN_AUTH_CHALLENGE_LEN &&
345 mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE &&
346 mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN)
347 challenge = &mgmt->u.auth.variable[2];
348
349 wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d "
350 "auth_transaction=%d status_code=%d wep=%d%s",
351 MAC2STR(mgmt->sa), auth_alg, auth_transaction,
352 status_code, !!(fc & WLAN_FC_ISWEP),
353 challenge ? " challenge" : "");
354
6fc6879b
JM		 355 if (hapd->tkip_countermeasures) {
356 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
357 goto fail;
358 }
359
360 if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) &&
361 auth_alg == WLAN_AUTH_OPEN) ||
362#ifdef CONFIG_IEEE80211R
363 (hapd->conf->wpa &&
364 (hapd->conf->wpa_key_mgmt &
365 (WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_FT_PSK)) &&
366 auth_alg == WLAN_AUTH_FT) ||
367#endif /* CONFIG_IEEE80211R */
368 ((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) &&
369 auth_alg == WLAN_AUTH_SHARED_KEY))) {
370 printf("Unsupported authentication algorithm (%d)\n",
371 auth_alg);
372 resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
373 goto fail;
374 }
375
376 if (!(auth_transaction == 1 ||
377 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) {
378 printf("Unknown authentication transaction number (%d)\n",
379 auth_transaction);
380 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
381 goto fail;
382 }
383
384 if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) {
385 printf("Station " MACSTR " not allowed to authenticate.\n",
386 MAC2STR(mgmt->sa));
387 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
388 goto fail;
389 }
390
391 res = hostapd_allowed_address(hapd, mgmt->sa, (u8 *) mgmt, len,
392 &session_timeout,
393 &acct_interim_interval, &vlan_id);
394 if (res == HOSTAPD_ACL_REJECT) {
395 printf("Station " MACSTR " not allowed to authenticate.\n",
396 MAC2STR(mgmt->sa));
397 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
398 goto fail;
399 }
400 if (res == HOSTAPD_ACL_PENDING) {
401 wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR
402 " waiting for an external authentication",
403 MAC2STR(mgmt->sa));
404 /* Authentication code will re-send the authentication frame
405 * after it has received (and cached) information from the
406 * external source. */
407 return;
408 }
409
410 sta = ap_sta_add(hapd, mgmt->sa);
411 if (!sta) {
412 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
413 goto fail;
414 }
415
416 if (vlan_id > 0) {
417 if (hostapd_get_vlan_id_ifname(hapd->conf->vlan,
1066c1ee 418 vlan_id) == NULL) {
6fc6879b
JM		 419 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
420 HOSTAPD_LEVEL_INFO, "Invalid VLAN ID "
421 "%d received from RADIUS server",
422 vlan_id);
423 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
424 goto fail;
425 }
426 sta->vlan_id = vlan_id;
427 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
428 HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id);
429 }
430
431 sta->flags &= ~WLAN_STA_PREAUTH;
432 ieee802_1x_notify_pre_auth(sta->eapol_sm, 0);
433
5843e1c9 434 if (hapd->conf->acct_interim_interval == 0 && acct_interim_interval)
6fc6879b
JM		 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 send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg,
493 auth_transaction + 1, resp, resp_ies, resp_ies_len);
494}
495
496
d42a62b3
JM		 497static int hostapd_get_aid(struct hostapd_data *hapd, struct sta_info *sta)
498{
2991469c
JM		 499 int i, j = 32, aid;
500
d42a62b3
JM		 501 /* get a unique AID */
502 if (sta->aid > 0) {
503 wpa_printf(MSG_DEBUG, " old AID %d", sta->aid);
504 return 0;
505 }
506
2991469c
JM		 507 for (i = 0; i < AID_WORDS; i++) {
508 if (hapd->sta_aid[i] == (u32) -1)
509 continue;
510 for (j = 0; j < 32; j++) {
511 if (!(hapd->sta_aid[i] & BIT(j)))
512 break;
513 }
514 if (j < 32)
d42a62b3 515 break;
d42a62b3 516 }
2991469c
JM		 517 if (j == 32)
518 return -1;
519 aid = i * 32 + j + 1;
520 if (aid > 2007)
521 return -1;
d42a62b3 522
2991469c
JM		 523 sta->aid = aid;
524 hapd->sta_aid[i] |= BIT(j);
d42a62b3
JM		 525 wpa_printf(MSG_DEBUG, " new AID %d", sta->aid);
526 return 0;
527}
528
529
5586f500
JM		 530static u16 check_ssid(struct hostapd_data *hapd, struct sta_info *sta,
531 const u8 *ssid_ie, size_t ssid_ie_len)
6fc6879b 532{
5586f500
JM		 533 if (ssid_ie == NULL)
534 return WLAN_STATUS_UNSPECIFIED_FAILURE;
6fc6879b 535
5586f500
JM		 536 if (ssid_ie_len != hapd->conf->ssid.ssid_len ||
537 os_memcmp(ssid_ie, hapd->conf->ssid.ssid, ssid_ie_len) != 0) {
538 char ssid_txt[33];
539 ieee802_11_print_ssid(ssid_txt, ssid_ie, ssid_ie_len);
540 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
541 HOSTAPD_LEVEL_INFO,
542 "Station tried to associate with unknown SSID "
543 "'%s'", ssid_txt);
544 return WLAN_STATUS_UNSPECIFIED_FAILURE;
b0194fe0
JM		 545 }
546
5586f500
JM		 547 return WLAN_STATUS_SUCCESS;
548}
6fc6879b 549
6fc6879b 550
5586f500
JM		 551static u16 check_wmm(struct hostapd_data *hapd, struct sta_info *sta,
552 const u8 *wmm_ie, size_t wmm_ie_len)
553{
3ae0800c 554 sta->flags &= ~WLAN_STA_WMM;
5586f500
JM		 555 if (wmm_ie && hapd->conf->wmm_enabled) {
556 if (hostapd_eid_wmm_valid(hapd, wmm_ie, wmm_ie_len))
6fc6879b
JM		 557 hostapd_logger(hapd, sta->addr,
558 HOSTAPD_MODULE_WPA,
559 HOSTAPD_LEVEL_DEBUG,
3ae0800c 560 "invalid WMM element in association "
6fc6879b
JM		 561 "request");
562 else
3ae0800c 563 sta->flags |= WLAN_STA_WMM;
6fc6879b 564 }
5586f500
JM		 565 return WLAN_STATUS_SUCCESS;
566}
6fc6879b 567
5586f500
JM		 568
569static u16 copy_supp_rates(struct hostapd_data *hapd, struct sta_info *sta,
570 struct ieee802_11_elems *elems)
571{
572 if (!elems->supp_rates) {
573 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
6fc6879b
JM		 574 HOSTAPD_LEVEL_DEBUG,
575 "No supported rates element in AssocReq");
5586f500 576 return WLAN_STATUS_UNSPECIFIED_FAILURE;
6fc6879b
JM		 577 }
578
5586f500
JM		 579 if (elems->supp_rates_len > sizeof(sta->supported_rates)) {
580 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
6fc6879b
JM		 581 HOSTAPD_LEVEL_DEBUG,
582 "Invalid supported rates element length %d",
5586f500
JM		 583 elems->supp_rates_len);
584 return WLAN_STATUS_UNSPECIFIED_FAILURE;
6fc6879b
JM		 585 }
586
587 os_memset(sta->supported_rates, 0, sizeof(sta->supported_rates));
5586f500
JM		 588 os_memcpy(sta->supported_rates, elems->supp_rates,
589 elems->supp_rates_len);
590 sta->supported_rates_len = elems->supp_rates_len;
6fc6879b 591
5586f500
JM		 592 if (elems->ext_supp_rates) {
593 if (elems->supp_rates_len + elems->ext_supp_rates_len >
6fc6879b 594 sizeof(sta->supported_rates)) {
5586f500 595 hostapd_logger(hapd, sta->addr,
6fc6879b
JM		 596 HOSTAPD_MODULE_IEEE80211,
597 HOSTAPD_LEVEL_DEBUG,
598 "Invalid supported rates element length"
5586f500
JM		 599 " %d+%d", elems->supp_rates_len,
600 elems->ext_supp_rates_len);
601 return WLAN_STATUS_UNSPECIFIED_FAILURE;
6fc6879b
JM		 602 }
603
5586f500
JM		 604 os_memcpy(sta->supported_rates + elems->supp_rates_len,
605 elems->ext_supp_rates, elems->ext_supp_rates_len);
606 sta->supported_rates_len += elems->ext_supp_rates_len;
6fc6879b
JM		 607 }
608
5586f500
JM		 609 return WLAN_STATUS_SUCCESS;
610}
611
612
5586f500 613static u16 check_assoc_ies(struct hostapd_data *hapd, struct sta_info *sta,
b57e086c 614 const u8 *ies, size_t ies_len, int reassoc)
5586f500
JM		 615{
616 struct ieee802_11_elems elems;
617 u16 resp;
ba091c06 618 const u8 *wpa_ie;
5586f500
JM		 619 size_t wpa_ie_len;
620
621 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) {
622 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
623 HOSTAPD_LEVEL_INFO, "Station sent an invalid "
624 "association request");
625 return WLAN_STATUS_UNSPECIFIED_FAILURE;
626 }
627
628 resp = check_ssid(hapd, sta, elems.ssid, elems.ssid_len);
629 if (resp != WLAN_STATUS_SUCCESS)
630 return resp;
631 resp = check_wmm(hapd, sta, elems.wmm, elems.wmm_len);
632 if (resp != WLAN_STATUS_SUCCESS)
633 return resp;
634 resp = copy_supp_rates(hapd, sta, &elems);
635 if (resp != WLAN_STATUS_SUCCESS)
636 return resp;
d45354be 637#ifdef CONFIG_IEEE80211N
5586f500
JM		 638 resp = copy_sta_ht_capab(sta, elems.ht_capabilities,
639 elems.ht_capabilities_len);
640 if (resp != WLAN_STATUS_SUCCESS)
641 return resp;
d45354be 642#endif /* CONFIG_IEEE80211N */
5586f500 643
6fc6879b
JM		 644 if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) {
645 wpa_ie = elems.rsn_ie;
646 wpa_ie_len = elems.rsn_ie_len;
647 } else if ((hapd->conf->wpa & WPA_PROTO_WPA) &&
648 elems.wpa_ie) {
649 wpa_ie = elems.wpa_ie;
650 wpa_ie_len = elems.wpa_ie_len;
651 } else {
652 wpa_ie = NULL;
653 wpa_ie_len = 0;
654 }
5586f500 655
ad08c363 656#ifdef CONFIG_WPS
a8d05fca 657 sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS);
c47cf42e
JM		 658 if (hapd->conf->wps_state && elems.wps_ie) {
659 wpa_printf(MSG_DEBUG, "STA included WPS IE in (Re)Association "
660 "Request - assume WPS is used");
661 sta->flags |= WLAN_STA_WPS;
662 wpabuf_free(sta->wps_ie);
16e46ec0
JM		 663 sta->wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
664 WPS_IE_VENDOR_TYPE);
c47cf42e
JM		 665 wpa_ie = NULL;
666 wpa_ie_len = 0;
667 } else if (hapd->conf->wps_state && wpa_ie == NULL) {
668 wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE in "
669 "(Re)Association Request - possible WPS use");
670 sta->flags |= WLAN_STA_MAYBE_WPS;
ad08c363
JM		 671 } else
672#endif /* CONFIG_WPS */
6fc6879b 673 if (hapd->conf->wpa && wpa_ie == NULL) {
5586f500
JM		 674 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
675 HOSTAPD_LEVEL_INFO,
676 "No WPA/RSN IE in association request");
677 return WLAN_STATUS_INVALID_IE;
6fc6879b
JM		 678 }
679
680 if (hapd->conf->wpa && wpa_ie) {
681 int res;
682 wpa_ie -= 2;
683 wpa_ie_len += 2;
684 if (sta->wpa_sm == NULL)
685 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
686 sta->addr);
687 if (sta->wpa_sm == NULL) {
5586f500
JM		 688 wpa_printf(MSG_WARNING, "Failed to initialize WPA "
689 "state machine");
690 return WLAN_STATUS_UNSPECIFIED_FAILURE;
6fc6879b
JM		 691 }
692 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
693 wpa_ie, wpa_ie_len,
694 elems.mdie, elems.mdie_len);
695 if (res == WPA_INVALID_GROUP)
696 resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
697 else if (res == WPA_INVALID_PAIRWISE)
698 resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
699 else if (res == WPA_INVALID_AKMP)
700 resp = WLAN_STATUS_AKMP_NOT_VALID;
701 else if (res == WPA_ALLOC_FAIL)
702 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
703#ifdef CONFIG_IEEE80211W
704 else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION)
9a9876bf 705 resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
6fc6879b 706 else if (res == WPA_INVALID_MGMT_GROUP_CIPHER)
9a9876bf 707 resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
6fc6879b
JM		 708#endif /* CONFIG_IEEE80211W */
709 else if (res == WPA_INVALID_MDIE)
710 resp = WLAN_STATUS_INVALID_MDIE;
711 else if (res != WPA_IE_OK)
712 resp = WLAN_STATUS_INVALID_IE;
713 if (resp != WLAN_STATUS_SUCCESS)
5586f500 714 return resp;
f3f7540e 715#ifdef CONFIG_IEEE80211W
45c94154
JM		 716 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
717 sta->sa_query_count > 0)
718 ap_check_sa_query_timeout(hapd, sta);
8f4617c6
JM		 719 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
720 (!reassoc || sta->auth_alg != WLAN_AUTH_FT)) {
5d22a1d5 721 /*
93b76319
JM		 722 * STA has already been associated with MFP and SA
723 * Query timeout has not been reached. Reject the
724 * association attempt temporarily and start SA Query,
725 * if one is not pending.
5d22a1d5
JM		 726 */
727
93b76319
JM		 728 if (sta->sa_query_count == 0)
729 ap_sta_start_sa_query(hapd, sta);
5d22a1d5 730
5586f500 731 return WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;
5d22a1d5
JM		 732 }
733
f3f7540e
JM		 734 if (wpa_auth_uses_mfp(sta->wpa_sm))
735 sta->flags |= WLAN_STA_MFP;
736 else
737 sta->flags &= ~WLAN_STA_MFP;
738#endif /* CONFIG_IEEE80211W */
6fc6879b
JM		 739
740#ifdef CONFIG_IEEE80211R
741 if (sta->auth_alg == WLAN_AUTH_FT) {
742 if (!reassoc) {
743 wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried "
744 "to use association (not "
745 "re-association) with FT auth_alg",
746 MAC2STR(sta->addr));
5586f500 747 return WLAN_STATUS_UNSPECIFIED_FAILURE;
6fc6879b
JM		 748 }
749
5586f500
JM		 750 resp = wpa_ft_validate_reassoc(sta->wpa_sm, ies,
751 ies_len);
6fc6879b 752 if (resp != WLAN_STATUS_SUCCESS)
5586f500 753 return resp;
6fc6879b
JM		 754 }
755#endif /* CONFIG_IEEE80211R */
5586f500 756
ff36ff00
JM		 757#ifdef CONFIG_IEEE80211N
758 if ((sta->flags & WLAN_STA_HT) &&
759 wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) {
5586f500
JM		 760 hostapd_logger(hapd, sta->addr,
761 HOSTAPD_MODULE_IEEE80211,
762 HOSTAPD_LEVEL_INFO,
763 "Station tried to use TKIP with HT "
764 "association");
765 return WLAN_STATUS_CIPHER_REJECTED_PER_POLICY;
ff36ff00
JM		 766 }
767#endif /* CONFIG_IEEE80211N */
a8d05fca
JM		 768 } else
769 wpa_auth_sta_no_wpa(sta->wpa_sm);
6fc6879b 770
5586f500
JM		 771 return WLAN_STATUS_SUCCESS;
772}
773
774
775static void send_deauth(struct hostapd_data *hapd, const u8 *addr,
776 u16 reason_code)
777{
778 int send_len;
779 struct ieee80211_mgmt reply;
780
781 os_memset(&reply, 0, sizeof(reply));
782 reply.frame_control =
783 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_DEAUTH);
784 os_memcpy(reply.da, addr, ETH_ALEN);
785 os_memcpy(reply.sa, hapd->own_addr, ETH_ALEN);
786 os_memcpy(reply.bssid, hapd->own_addr, ETH_ALEN);
787
788 send_len = IEEE80211_HDRLEN + sizeof(reply.u.deauth);
789 reply.u.deauth.reason_code = host_to_le16(reason_code);
790
c90933d2 791 if (hapd->drv.send_mgmt_frame(hapd, &reply, send_len) < 0)
5586f500
JM		 792 wpa_printf(MSG_INFO, "Failed to send deauth: %s",
793 strerror(errno));
794}
795
796
797static void send_assoc_resp(struct hostapd_data *hapd, struct sta_info *sta,
b57e086c 798 u16 status_code, int reassoc, const u8 *ies,
5586f500
JM		 799 size_t ies_len)
800{
801 int send_len;
802 u8 buf[sizeof(struct ieee80211_mgmt) + 1024];
803 struct ieee80211_mgmt *reply;
804 u8 *p;
805
806 os_memset(buf, 0, sizeof(buf));
807 reply = (struct ieee80211_mgmt *) buf;
808 reply->frame_control =
809 IEEE80211_FC(WLAN_FC_TYPE_MGMT,
810 (reassoc ? WLAN_FC_STYPE_REASSOC_RESP :
811 WLAN_FC_STYPE_ASSOC_RESP));
812 os_memcpy(reply->da, sta->addr, ETH_ALEN);
813 os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
814 os_memcpy(reply->bssid, hapd->own_addr, ETH_ALEN);
815
816 send_len = IEEE80211_HDRLEN;
817 send_len += sizeof(reply->u.assoc_resp);
818 reply->u.assoc_resp.capab_info =
819 host_to_le16(hostapd_own_capab_info(hapd, sta, 0));
820 reply->u.assoc_resp.status_code = host_to_le16(status_code);
821 reply->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0)
822 | BIT(14) | BIT(15));
823 /* Supported rates */
824 p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable);
825 /* Extended supported rates */
826 p = hostapd_eid_ext_supp_rates(hapd, p);
5586f500
JM		 827
828#ifdef CONFIG_IEEE80211R
829 if (status_code == WLAN_STATUS_SUCCESS) {
830 /* IEEE 802.11r: Mobility Domain Information, Fast BSS
831 * Transition Information, RSN, [RIC Response] */
832 p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p,
833 buf + sizeof(buf) - p,
834 sta->auth_alg, ies, ies_len);
835 }
836#endif /* CONFIG_IEEE80211R */
837
838#ifdef CONFIG_IEEE80211W
839 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY)
840 p = hostapd_eid_assoc_comeback_time(hapd, sta, p);
841#endif /* CONFIG_IEEE80211W */
842
1bc774a1
JM		 843#ifdef CONFIG_IEEE80211N
844 p = hostapd_eid_ht_capabilities(hapd, p);
845 p = hostapd_eid_ht_operation(hapd, p);
846#endif /* CONFIG_IEEE80211N */
847
848 if (sta->flags & WLAN_STA_WMM)
849 p = hostapd_eid_wmm(hapd, p);
850
ed7a09f9
JM		 851#ifdef CONFIG_WPS
852 if (sta->flags & WLAN_STA_WPS) {
853 struct wpabuf *wps = wps_build_assoc_resp_ie();
854 if (wps) {
855 os_memcpy(p, wpabuf_head(wps), wpabuf_len(wps));
856 p += wpabuf_len(wps);
857 wpabuf_free(wps);
858 }
859 }
860#endif /* CONFIG_WPS */
861
5586f500
JM		 862 send_len += p - reply->u.assoc_resp.variable;
863
c90933d2 864 if (hapd->drv.send_mgmt_frame(hapd, reply, send_len) < 0)
5586f500
JM		 865 wpa_printf(MSG_INFO, "Failed to send assoc resp: %s",
866 strerror(errno));
867}
868
869
870static void handle_assoc(struct hostapd_data *hapd,
b57e086c
JM		 871 const struct ieee80211_mgmt *mgmt, size_t len,
872 int reassoc)
5586f500
JM		 873{
874 u16 capab_info, listen_interval;
875 u16 resp = WLAN_STATUS_SUCCESS;
b57e086c 876 const u8 *pos;
5586f500
JM		 877 int left, i;
878 struct sta_info *sta;
879
880 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
881 sizeof(mgmt->u.assoc_req))) {
882 printf("handle_assoc(reassoc=%d) - too short payload (len=%lu)"
883 "\n", reassoc, (unsigned long) len);
884 return;
885 }
886
887 if (reassoc) {
888 capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info);
889 listen_interval = le_to_host16(
890 mgmt->u.reassoc_req.listen_interval);
891 wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR
892 " capab_info=0x%02x listen_interval=%d current_ap="
893 MACSTR,
894 MAC2STR(mgmt->sa), capab_info, listen_interval,
895 MAC2STR(mgmt->u.reassoc_req.current_ap));
896 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req));
897 pos = mgmt->u.reassoc_req.variable;
898 } else {
899 capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
900 listen_interval = le_to_host16(
901 mgmt->u.assoc_req.listen_interval);
902 wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR
903 " capab_info=0x%02x listen_interval=%d",
904 MAC2STR(mgmt->sa), capab_info, listen_interval);
905 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req));
906 pos = mgmt->u.assoc_req.variable;
907 }
908
909 sta = ap_get_sta(hapd, mgmt->sa);
910#ifdef CONFIG_IEEE80211R
911 if (sta && sta->auth_alg == WLAN_AUTH_FT &&
912 (sta->flags & WLAN_STA_AUTH) == 0) {
913 wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate "
914 "prior to authentication since it is using "
915 "over-the-DS FT", MAC2STR(mgmt->sa));
916 } else
917#endif /* CONFIG_IEEE80211R */
918 if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
919 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
920 HOSTAPD_LEVEL_INFO, "Station tried to "
921 "associate before authentication "
922 "(aid=%d flags=0x%x)",
923 sta ? sta->aid : -1,
924 sta ? sta->flags : 0);
925 send_deauth(hapd, mgmt->sa,
926 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA);
927 return;
928 }
929
930 if (hapd->tkip_countermeasures) {
931 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
932 goto fail;
933 }
934
935 if (listen_interval > hapd->conf->max_listen_interval) {
936 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
937 HOSTAPD_LEVEL_DEBUG,
938 "Too large Listen Interval (%d)",
939 listen_interval);
940 resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE;
941 goto fail;
942 }
943
944 /* followed by SSID and Supported rates; and HT capabilities if 802.11n
945 * is used */
946 resp = check_assoc_ies(hapd, sta, pos, left, reassoc);
947 if (resp != WLAN_STATUS_SUCCESS)
948 goto fail;
949
950 if (hostapd_get_aid(hapd, sta) < 0) {
951 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
952 HOSTAPD_LEVEL_INFO, "No room for more AIDs");
953 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
954 goto fail;
955 }
956
957 sta->capability = capab_info;
958 sta->listen_interval = listen_interval;
959
6fc6879b
JM		 960 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
961 sta->flags |= WLAN_STA_NONERP;
962 for (i = 0; i < sta->supported_rates_len; i++) {
963 if ((sta->supported_rates[i] & 0x7f) > 22) {
964 sta->flags &= ~WLAN_STA_NONERP;
965 break;
966 }
967 }
968 if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) {
969 sta->nonerp_set = 1;
970 hapd->iface->num_sta_non_erp++;
971 if (hapd->iface->num_sta_non_erp == 1)
972 ieee802_11_set_beacons(hapd->iface);
973 }
974
975 if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) &&
976 !sta->no_short_slot_time_set) {
977 sta->no_short_slot_time_set = 1;
978 hapd->iface->num_sta_no_short_slot_time++;
979 if (hapd->iface->current_mode->mode ==
980 HOSTAPD_MODE_IEEE80211G &&
981 hapd->iface->num_sta_no_short_slot_time == 1)
982 ieee802_11_set_beacons(hapd->iface);
983 }
984
985 if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
986 sta->flags |= WLAN_STA_SHORT_PREAMBLE;
987 else
988 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
989
990 if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
991 !sta->no_short_preamble_set) {
992 sta->no_short_preamble_set = 1;
993 hapd->iface->num_sta_no_short_preamble++;
994 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
995 && hapd->iface->num_sta_no_short_preamble == 1)
996 ieee802_11_set_beacons(hapd->iface);
997 }
998
d45354be 999#ifdef CONFIG_IEEE80211N
5586f500 1000 update_ht_state(hapd, sta);
d45354be 1001#endif /* CONFIG_IEEE80211N */
de9289c8 1002
6fc6879b
JM		 1003 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1004 HOSTAPD_LEVEL_DEBUG,
1005 "association OK (aid %d)", sta->aid);
1006 /* Station will be marked associated, after it acknowledges AssocResp
1007 */
1008
6f5c8dbd
JM		 1009#ifdef CONFIG_IEEE80211W
1010 if ((sta->flags & WLAN_STA_MFP) && sta->sa_query_timed_out) {
1011 wpa_printf(MSG_DEBUG, "Allowing %sassociation after timed out "
1012 "SA Query procedure", reassoc ? "re" : "");
1013 /* TODO: Send a protected Disassociate frame to the STA using
1014 * the old key and Reason Code "Previous Authentication no
1015 * longer valid". Make sure this is only sent protected since
1016 * unprotected frame would be received by the STA that is now
1017 * trying to associate.
1018 */
1019 }
1020#endif /* CONFIG_IEEE80211W */
1021
1e858f69
JM		 1022 if (reassoc) {
1023 os_memcpy(sta->previous_ap, mgmt->u.reassoc_req.current_ap,
1024 ETH_ALEN);
1025 }
1026
6fc6879b
JM		 1027 if (sta->last_assoc_req)
1028 os_free(sta->last_assoc_req);
1029 sta->last_assoc_req = os_malloc(len);
1030 if (sta->last_assoc_req)
1031 os_memcpy(sta->last_assoc_req, mgmt, len);
1032
1033 /* Make sure that the previously registered inactivity timer will not
1034 * remove the STA immediately. */
1035 sta->timeout_next = STA_NULLFUNC;
1036
1037 fail:
5586f500 1038 send_assoc_resp(hapd, sta, resp, reassoc, pos, left);
6fc6879b
JM		 1039}
1040
1041
6fc6879b 1042static void handle_disassoc(struct hostapd_data *hapd,
f8b1f695 1043 const struct ieee80211_mgmt *mgmt, size_t len)
6fc6879b
JM		 1044{
1045 struct sta_info *sta;
1046
1047 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) {
1048 printf("handle_disassoc - too short payload (len=%lu)\n",
1049 (unsigned long) len);
1050 return;
1051 }
1052
1053 wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d",
1054 MAC2STR(mgmt->sa),
1055 le_to_host16(mgmt->u.disassoc.reason_code));
1056
6fc6879b
JM		 1057 sta = ap_get_sta(hapd, mgmt->sa);
1058 if (sta == NULL) {
1059 printf("Station " MACSTR " trying to disassociate, but it "
1060 "is not associated.\n", MAC2STR(mgmt->sa));
1061 return;
1062 }
1063
1064 sta->flags &= ~WLAN_STA_ASSOC;
20bd9547
JM		 1065 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED MACSTR,
1066 MAC2STR(sta->addr));
6fc6879b
JM		 1067 wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
1068 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1069 HOSTAPD_LEVEL_INFO, "disassociated");
1070 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1071 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1072 /* Stop Accounting and IEEE 802.1X sessions, but leave the STA
1073 * authenticated. */
1074 accounting_sta_stop(hapd, sta);
1075 ieee802_1x_free_station(sta);
bdee6fce 1076 hapd->drv.sta_remove(hapd, sta->addr);
6fc6879b
JM		 1077
1078 if (sta->timeout_next == STA_NULLFUNC ||
1079 sta->timeout_next == STA_DISASSOC) {
1080 sta->timeout_next = STA_DEAUTH;
1081 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1082 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
1083 hapd, sta);
1084 }
1085
1086 mlme_disassociate_indication(
1087 hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code));
1088}
1089
1090
1091static void handle_deauth(struct hostapd_data *hapd,
f8b1f695 1092 const struct ieee80211_mgmt *mgmt, size_t len)
6fc6879b
JM		 1093{
1094 struct sta_info *sta;
1095
1096 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) {
1097 printf("handle_deauth - too short payload (len=%lu)\n",
1098 (unsigned long) len);
1099 return;
1100 }
1101
1102 wpa_printf(MSG_DEBUG, "deauthentication: STA=" MACSTR
1103 " reason_code=%d",
1104 MAC2STR(mgmt->sa),
1105 le_to_host16(mgmt->u.deauth.reason_code));
1106
6fc6879b
JM		 1107 sta = ap_get_sta(hapd, mgmt->sa);
1108 if (sta == NULL) {
1109 printf("Station " MACSTR " trying to deauthenticate, but it "
1110 "is not authenticated.\n", MAC2STR(mgmt->sa));
1111 return;
1112 }
1113
1114 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
20bd9547
JM		 1115 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED MACSTR,
1116 MAC2STR(sta->addr));
6fc6879b
JM		 1117 wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
1118 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1119 HOSTAPD_LEVEL_DEBUG, "deauthenticated");
1120 mlme_deauthenticate_indication(
1121 hapd, sta, le_to_host16(mgmt->u.deauth.reason_code));
1122 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1123 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1124 ap_free_sta(hapd, sta);
1125}
1126
1127
1128static void handle_beacon(struct hostapd_data *hapd,
b57e086c 1129 const struct ieee80211_mgmt *mgmt, size_t len,
6fc6879b
JM		 1130 struct hostapd_frame_info *fi)
1131{
1132 struct ieee802_11_elems elems;
1133
1134 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) {
1135 printf("handle_beacon - too short payload (len=%lu)\n",
1136 (unsigned long) len);
1137 return;
1138 }
1139
3d536eb4 1140 (void) ieee802_11_parse_elems(mgmt->u.beacon.variable,
6fc6879b
JM		 1141 len - (IEEE80211_HDRLEN +
1142 sizeof(mgmt->u.beacon)), &elems,
1143 0);
1144
6fc6879b
JM		 1145 ap_list_process_beacon(hapd->iface, mgmt, &elems, fi);
1146}
1147
1148
5d22a1d5 1149#ifdef CONFIG_IEEE80211W
88b4b424
JM		 1150
1151/* MLME-SAQuery.request */
1152void ieee802_11_send_sa_query_req(struct hostapd_data *hapd,
1153 const u8 *addr, const u8 *trans_id)
1154{
1155 struct ieee80211_mgmt mgmt;
1156 u8 *end;
1157
92305c5d
JM		 1158 wpa_printf(MSG_DEBUG, "IEEE 802.11: Sending SA Query Request to "
1159 MACSTR, MAC2STR(addr));
1160 wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID",
1161 trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1162
88b4b424
JM		 1163 os_memset(&mgmt, 0, sizeof(mgmt));
1164 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1165 WLAN_FC_STYPE_ACTION);
1166 os_memcpy(mgmt.da, addr, ETH_ALEN);
1167 os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
1168 os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
1169 mgmt.u.action.category = WLAN_ACTION_SA_QUERY;
1170 mgmt.u.action.u.sa_query_req.action = WLAN_SA_QUERY_REQUEST;
1171 os_memcpy(mgmt.u.action.u.sa_query_req.trans_id, trans_id,
1172 WLAN_SA_QUERY_TR_ID_LEN);
1173 end = mgmt.u.action.u.sa_query_req.trans_id + WLAN_SA_QUERY_TR_ID_LEN;
c90933d2 1174 if (hapd->drv.send_mgmt_frame(hapd, &mgmt, end - (u8 *) &mgmt) < 0)
88b4b424
JM		 1175 perror("ieee802_11_send_sa_query_req: send");
1176}
1177
1178
358c3691
JM		 1179static void hostapd_sa_query_request(struct hostapd_data *hapd,
1180 const struct ieee80211_mgmt *mgmt)
1181{
1182 struct sta_info *sta;
1183 struct ieee80211_mgmt resp;
1184 u8 *end;
1185
1186 wpa_printf(MSG_DEBUG, "IEEE 802.11: Received SA Query Request from "
1187 MACSTR, MAC2STR(mgmt->sa));
1188 wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID",
1189 mgmt->u.action.u.sa_query_resp.trans_id,
1190 WLAN_SA_QUERY_TR_ID_LEN);
1191
1192 sta = ap_get_sta(hapd, mgmt->sa);
1193 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
1194 wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignore SA Query Request "
1195 "from unassociated STA " MACSTR, MAC2STR(mgmt->sa));
1196 return;
1197 }
1198
1199 wpa_printf(MSG_DEBUG, "IEEE 802.11: Sending SA Query Response to "
1200 MACSTR, MAC2STR(mgmt->sa));
1201
1202 os_memset(&resp, 0, sizeof(resp));
1203 resp.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1204 WLAN_FC_STYPE_ACTION);
1205 os_memcpy(resp.da, mgmt->sa, ETH_ALEN);
1206 os_memcpy(resp.sa, hapd->own_addr, ETH_ALEN);
1207 os_memcpy(resp.bssid, hapd->own_addr, ETH_ALEN);
1208 resp.u.action.category = WLAN_ACTION_SA_QUERY;
1209 resp.u.action.u.sa_query_req.action = WLAN_SA_QUERY_RESPONSE;
1210 os_memcpy(resp.u.action.u.sa_query_req.trans_id,
1211 mgmt->u.action.u.sa_query_req.trans_id,
1212 WLAN_SA_QUERY_TR_ID_LEN);
1213 end = resp.u.action.u.sa_query_req.trans_id + WLAN_SA_QUERY_TR_ID_LEN;
1214 if (hapd->drv.send_mgmt_frame(hapd, &resp, end - (u8 *) &resp) < 0)
1215 perror("hostapd_sa_query_request: send");
1216}
1217
1218
93b76319 1219static void hostapd_sa_query_action(struct hostapd_data *hapd,
b57e086c
JM		 1220 const struct ieee80211_mgmt *mgmt,
1221 size_t len)
5d22a1d5
JM		 1222{
1223 struct sta_info *sta;
b57e086c 1224 const u8 *end;
5d22a1d5
JM		 1225 int i;
1226
93b76319
JM		 1227 end = mgmt->u.action.u.sa_query_resp.trans_id +
1228 WLAN_SA_QUERY_TR_ID_LEN;
5d22a1d5 1229 if (((u8 *) mgmt) + len < end) {
93b76319 1230 wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short SA Query Action "
5d22a1d5
JM		 1231 "frame (len=%lu)", (unsigned long) len);
1232 return;
1233 }
1234
358c3691
JM		 1235 if (mgmt->u.action.u.sa_query_resp.action == WLAN_SA_QUERY_REQUEST) {
1236 hostapd_sa_query_request(hapd, mgmt);
1237 return;
1238 }
1239
93b76319
JM		 1240 if (mgmt->u.action.u.sa_query_resp.action != WLAN_SA_QUERY_RESPONSE) {
1241 wpa_printf(MSG_DEBUG, "IEEE 802.11: Unexpected SA Query "
1242 "Action %d", mgmt->u.action.u.sa_query_resp.action);
5d22a1d5
JM		 1243 return;
1244 }
1245
92305c5d
JM		 1246 wpa_printf(MSG_DEBUG, "IEEE 802.11: Received SA Query Response from "
1247 MACSTR, MAC2STR(mgmt->sa));
1248 wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID",
1249 mgmt->u.action.u.sa_query_resp.trans_id,
1250 WLAN_SA_QUERY_TR_ID_LEN);
1251
93b76319 1252 /* MLME-SAQuery.confirm */
5d22a1d5
JM		 1253
1254 sta = ap_get_sta(hapd, mgmt->sa);
93b76319 1255 if (sta == NULL || sta->sa_query_trans_id == NULL) {
5d22a1d5 1256 wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching STA with "
93b76319 1257 "pending SA Query request found");
5d22a1d5
JM		 1258 return;
1259 }
1260
93b76319
JM		 1261 for (i = 0; i < sta->sa_query_count; i++) {
1262 if (os_memcmp(sta->sa_query_trans_id +
1263 i * WLAN_SA_QUERY_TR_ID_LEN,
1264 mgmt->u.action.u.sa_query_resp.trans_id,
1265 WLAN_SA_QUERY_TR_ID_LEN) == 0)
5d22a1d5
JM		 1266 break;
1267 }
1268
93b76319
JM		 1269 if (i >= sta->sa_query_count) {
1270 wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching SA Query "
5d22a1d5
JM		 1271 "transaction identifier found");
1272 return;
1273 }
1274
1275 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
93b76319
JM		 1276 HOSTAPD_LEVEL_DEBUG,
1277 "Reply to pending SA Query received");
1278 ap_sta_stop_sa_query(hapd, sta);
5d22a1d5 1279}
5d22a1d5
JM		 1280
1281
c4e281fd
JM		 1282static int robust_action_frame(u8 category)
1283{
1284 return category != WLAN_ACTION_PUBLIC &&
1285 category != WLAN_ACTION_HT;
1286}
9f64b827 1287#endif /* CONFIG_IEEE80211W */
c4e281fd
JM		 1288
1289
6fc6879b 1290static void handle_action(struct hostapd_data *hapd,
b57e086c 1291 const struct ieee80211_mgmt *mgmt, size_t len)
6fc6879b 1292{
c4e281fd
JM		 1293 struct sta_info *sta;
1294
6fc6879b
JM		 1295 if (len < IEEE80211_HDRLEN + 1) {
1296 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1297 HOSTAPD_LEVEL_DEBUG,
1298 "handle_action - too short payload (len=%lu)",
1299 (unsigned long) len);
1300 return;
1301 }
1302
c4e281fd
JM		 1303 sta = ap_get_sta(hapd, mgmt->sa);
1304#ifdef CONFIG_IEEE80211W
1305 if (sta && (sta->flags & WLAN_STA_MFP) &&
1306 !(mgmt->frame_control & host_to_le16(WLAN_FC_ISWEP) &&
1307 robust_action_frame(mgmt->u.action.category))) {
1308 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1309 HOSTAPD_LEVEL_DEBUG,
1310 "Dropped unprotected Robust Action frame from "
1311 "an MFP STA");
1312 return;
1313 }
1314#endif /* CONFIG_IEEE80211W */
1315
6fc6879b
JM		 1316 switch (mgmt->u.action.category) {
1317#ifdef CONFIG_IEEE80211R
1318 case WLAN_ACTION_FT:
1319 {
6fc6879b
JM		 1320 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
1321 wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored FT Action "
1322 "frame from unassociated STA " MACSTR,
1323 MAC2STR(mgmt->sa));
1324 return;
1325 }
1326
1327 if (wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action,
1328 len - IEEE80211_HDRLEN))
1329 break;
1330
1331 return;
1332 }
1333#endif /* CONFIG_IEEE80211R */
c2a71408 1334 case WLAN_ACTION_WMM:
3ae0800c 1335 hostapd_wmm_action(hapd, mgmt, len);
6fc6879b 1336 return;
5d22a1d5 1337#ifdef CONFIG_IEEE80211W
93b76319
JM		 1338 case WLAN_ACTION_SA_QUERY:
1339 hostapd_sa_query_action(hapd, mgmt, len);
5d22a1d5
JM		 1340 return;
1341#endif /* CONFIG_IEEE80211W */
c706d5aa
JM		 1342 case WLAN_ACTION_PUBLIC:
1343 if (hapd->public_action_cb) {
1344 hapd->public_action_cb(hapd->public_action_cb_ctx,
1345 (u8 *) mgmt, len,
1346 hapd->iface->freq);
1347 return;
1348 }
1349 break;
6fc6879b
JM		 1350 }
1351
1352 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1353 HOSTAPD_LEVEL_DEBUG,
1354 "handle_action - unknown action category %d or invalid "
1355 "frame",
1356 mgmt->u.action.category);
1357 if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) &&
1358 !(mgmt->sa[0] & 0x01)) {
b57e086c
JM		 1359 struct ieee80211_mgmt *resp;
1360
6fc6879b
JM		 1361 /*
1362 * IEEE 802.11-REVma/D9.0 - 7.3.1.11
1363 * Return the Action frame to the source without change
1364 * except that MSB of the Category set to 1.
1365 */
1366 wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action "
1367 "frame back to sender");
b57e086c
JM		 1368 resp = os_malloc(len);
1369 if (resp == NULL)
1370 return;
1371 os_memcpy(resp, mgmt, len);
1372 os_memcpy(resp->da, resp->sa, ETH_ALEN);
1373 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
1374 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
1375 resp->u.action.category |= 0x80;
1376
c90933d2 1377 hapd->drv.send_mgmt_frame(hapd, resp, len);
b57e086c 1378 os_free(resp);
6fc6879b
JM		 1379 }
1380}
1381
1382
1383/**
1384 * ieee802_11_mgmt - process incoming IEEE 802.11 management frames
1385 * @hapd: hostapd BSS data structure (the BSS to which the management frame was
1386 * sent to)
1387 * @buf: management frame data (starting from IEEE 802.11 header)
1388 * @len: length of frame data in octets
a17df5fb 1389 * @fi: meta data about received frame (signal level, etc.)
6fc6879b
JM		 1390 *
1391 * Process all incoming IEEE 802.11 management frames. This will be called for
1392 * each frame received from the kernel driver through wlan#ap interface. In
1393 * addition, it can be called to re-inserted pending frames (e.g., when using
1394 * external RADIUS server as an MAC ACL).
1395 */
b57e086c 1396void ieee802_11_mgmt(struct hostapd_data *hapd, const u8 *buf, size_t len,
6fc6879b
JM		 1397 struct hostapd_frame_info *fi)
1398{
f8b1f695 1399 struct ieee80211_mgmt *mgmt;
6fc6879b 1400 int broadcast;
f8b1f695
JM		 1401 u16 fc, stype;
1402
1403 mgmt = (struct ieee80211_mgmt *) buf;
1404 fc = le_to_host16(mgmt->frame_control);
1405 stype = WLAN_FC_GET_STYPE(fc);
6fc6879b
JM		 1406
1407 if (stype == WLAN_FC_STYPE_BEACON) {
1408 handle_beacon(hapd, mgmt, len, fi);
1409 return;
1410 }
1411
6fc6879b
JM		 1412 broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff &&
1413 mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff &&
1414 mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff;
1415
1416 if (!broadcast &&
fe2c5241 1417 os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) {
6fc6879b
JM		 1418 printf("MGMT: BSSID=" MACSTR " not our address\n",
1419 MAC2STR(mgmt->bssid));
1420 return;
1421 }
1422
1423
1424 if (stype == WLAN_FC_STYPE_PROBE_REQ) {
1425 handle_probe_req(hapd, mgmt, len);
1426 return;
1427 }
1428
1429 if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) {
1430 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1431 HOSTAPD_LEVEL_DEBUG,
1432 "MGMT: DA=" MACSTR " not our address",
1433 MAC2STR(mgmt->da));
1434 return;
1435 }
1436
1437 switch (stype) {
1438 case WLAN_FC_STYPE_AUTH:
1439 wpa_printf(MSG_DEBUG, "mgmt::auth");
1440 handle_auth(hapd, mgmt, len);
1441 break;
1442 case WLAN_FC_STYPE_ASSOC_REQ:
1443 wpa_printf(MSG_DEBUG, "mgmt::assoc_req");
1444 handle_assoc(hapd, mgmt, len, 0);
1445 break;
6fc6879b
JM		 1446 case WLAN_FC_STYPE_REASSOC_REQ:
1447 wpa_printf(MSG_DEBUG, "mgmt::reassoc_req");
1448 handle_assoc(hapd, mgmt, len, 1);
1449 break;
1450 case WLAN_FC_STYPE_DISASSOC:
1451 wpa_printf(MSG_DEBUG, "mgmt::disassoc");
1452 handle_disassoc(hapd, mgmt, len);
1453 break;
1454 case WLAN_FC_STYPE_DEAUTH:
1455 wpa_printf(MSG_DEBUG, "mgmt::deauth");
1456 handle_deauth(hapd, mgmt, len);
1457 break;
1458 case WLAN_FC_STYPE_ACTION:
1459 wpa_printf(MSG_DEBUG, "mgmt::action");
1460 handle_action(hapd, mgmt, len);
1461 break;
1462 default:
1463 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1464 HOSTAPD_LEVEL_DEBUG,
1465 "unknown mgmt frame subtype %d", stype);
1466 break;
1467 }
1468}
1469
1470
1471static void handle_auth_cb(struct hostapd_data *hapd,
f8b1f695 1472 const struct ieee80211_mgmt *mgmt,
6fc6879b
JM		 1473 size_t len, int ok)
1474{
1475 u16 auth_alg, auth_transaction, status_code;
1476 struct sta_info *sta;
1477
1478 if (!ok) {
1479 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1480 HOSTAPD_LEVEL_NOTICE,
1481 "did not acknowledge authentication response");
1482 return;
1483 }
1484
1485 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
1486 printf("handle_auth_cb - too short payload (len=%lu)\n",
1487 (unsigned long) len);
1488 return;
1489 }
1490
1491 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
1492 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
1493 status_code = le_to_host16(mgmt->u.auth.status_code);
1494
1495 sta = ap_get_sta(hapd, mgmt->da);
1496 if (!sta) {
1497 printf("handle_auth_cb: STA " MACSTR " not found\n",
1498 MAC2STR(mgmt->da));
1499 return;
1500 }
1501
1502 if (status_code == WLAN_STATUS_SUCCESS &&
1503 ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
1504 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
1505 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1506 HOSTAPD_LEVEL_INFO, "authenticated");
1507 sta->flags |= WLAN_STA_AUTH;
1508 }
1509}
1510
1511
1512static void handle_assoc_cb(struct hostapd_data *hapd,
f8b1f695 1513 const struct ieee80211_mgmt *mgmt,
6fc6879b
JM		 1514 size_t len, int reassoc, int ok)
1515{
1516 u16 status;
1517 struct sta_info *sta;
1518 int new_assoc = 1;
fc4e2d95 1519 struct ieee80211_ht_capabilities ht_cap;
6fc6879b
JM		 1520
1521 if (!ok) {
1522 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1523 HOSTAPD_LEVEL_DEBUG,
1524 "did not acknowledge association response");
1525 return;
1526 }
1527
1528 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) :
1529 sizeof(mgmt->u.assoc_resp))) {
1530 printf("handle_assoc_cb(reassoc=%d) - too short payload "
1531 "(len=%lu)\n", reassoc, (unsigned long) len);
1532 return;
1533 }
1534
1535 if (reassoc)
1536 status = le_to_host16(mgmt->u.reassoc_resp.status_code);
1537 else
1538 status = le_to_host16(mgmt->u.assoc_resp.status_code);
1539
1540 sta = ap_get_sta(hapd, mgmt->da);
1541 if (!sta) {
1542 printf("handle_assoc_cb: STA " MACSTR " not found\n",
1543 MAC2STR(mgmt->da));
1544 return;
1545 }
1546
1547 if (status != WLAN_STATUS_SUCCESS)
1548 goto fail;
1549
1550 /* Stop previous accounting session, if one is started, and allocate
1551 * new session id for the new session. */
1552 accounting_sta_stop(hapd, sta);
6fc6879b
JM		 1553
1554 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1555 HOSTAPD_LEVEL_INFO,
2fc98d02
JM		 1556 "associated (aid %d)",
1557 sta->aid);
6fc6879b
JM		 1558
1559 if (sta->flags & WLAN_STA_ASSOC)
1560 new_assoc = 0;
1561 sta->flags |= WLAN_STA_ASSOC;
ef580012
JM		 1562 if ((!hapd->conf->ieee802_1x && !hapd->conf->wpa) ||
1563 sta->auth_alg == WLAN_AUTH_FT) {
1564 /*
1565 * Open, static WEP, or FT protocol; no separate authorization
1566 * step.
1567 */
515cf93f 1568 sta->flags |= WLAN_STA_AUTHORIZED;
20bd9547
JM		 1569 wpa_msg(hapd->msg_ctx, MSG_INFO,
1570 AP_STA_CONNECTED MACSTR, MAC2STR(sta->addr));
515cf93f 1571 }
6fc6879b
JM		 1572
1573 if (reassoc)
1574 mlme_reassociate_indication(hapd, sta);
1575 else
1576 mlme_associate_indication(hapd, sta);
1577
5d22a1d5 1578#ifdef CONFIG_IEEE80211W
93b76319 1579 sta->sa_query_timed_out = 0;
5d22a1d5
JM		 1580#endif /* CONFIG_IEEE80211W */
1581
c140a228
JM		 1582 /*
1583 * Remove the STA entry in order to make sure the STA PS state gets
1584 * cleared and configuration gets updated in case of reassociation back
1585 * to the same AP.
1586 */
bdee6fce 1587 hapd->drv.sta_remove(hapd, sta->addr);
c140a228 1588
d45354be
JM		 1589#ifdef CONFIG_IEEE80211N
1590 if (sta->flags & WLAN_STA_HT)
1591 hostapd_get_ht_capab(hapd, sta->ht_capabilities, &ht_cap);
1592#endif /* CONFIG_IEEE80211N */
1593
62847751
JM		 1594 if (hapd->drv.sta_add(hapd, sta->addr, sta->aid, sta->capability,
1595 sta->supported_rates, sta->supported_rates_len,
1596 sta->listen_interval,
2ce86d9d 1597 sta->flags & WLAN_STA_HT ? &ht_cap : NULL)) {
6fc6879b
JM		 1598 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1599 HOSTAPD_LEVEL_NOTICE,
1600 "Could not add STA to kernel driver");
1601 }
1602
1603 if (sta->eapol_sm == NULL) {
1604 /*
1605 * This STA does not use RADIUS server for EAP authentication,
1606 * so bind it to the selected VLAN interface now, since the
1607 * interface selection is not going to change anymore.
1608 */
4254100d
JM		 1609 if (ap_sta_bind_vlan(hapd, sta, 0) < 0)
1610 goto fail;
6fc6879b
JM		 1611 } else if (sta->vlan_id) {
1612 /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */
4254100d
JM		 1613 if (ap_sta_bind_vlan(hapd, sta, 0) < 0)
1614 goto fail;
6fc6879b 1615 }
eddd8010 1616
4c2ddda4 1617 hapd->drv.set_sta_flags(hapd, sta);
6fc6879b
JM		 1618
1619 if (sta->auth_alg == WLAN_AUTH_FT)
1620 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
1621 else
1622 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
d24df7c3 1623 hapd->new_assoc_sta_cb(hapd, sta, !new_assoc);
6fc6879b
JM		 1624
1625 ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
1626
1627 fail:
1628 /* Copy of the association request is not needed anymore */
1629 if (sta->last_assoc_req) {
1630 os_free(sta->last_assoc_req);
1631 sta->last_assoc_req = NULL;
1632 }
1633}
1634
1635
1c6e69cc
JM		 1636/**
1637 * ieee802_11_mgmt_cb - Process management frame TX status callback
1638 * @hapd: hostapd BSS data structure (the BSS from which the management frame
1639 * was sent from)
1640 * @buf: management frame data (starting from IEEE 802.11 header)
1641 * @len: length of frame data in octets
1642 * @stype: management frame subtype from frame control field
1643 * @ok: Whether the frame was ACK'ed
1644 */
f8b1f695 1645void ieee802_11_mgmt_cb(struct hostapd_data *hapd, const u8 *buf, size_t len,
6fc6879b
JM		 1646 u16 stype, int ok)
1647{
f8b1f695
JM		 1648 const struct ieee80211_mgmt *mgmt;
1649 mgmt = (const struct ieee80211_mgmt *) buf;
6fc6879b
JM		 1650
1651 switch (stype) {
1652 case WLAN_FC_STYPE_AUTH:
1653 wpa_printf(MSG_DEBUG, "mgmt::auth cb");
1654 handle_auth_cb(hapd, mgmt, len, ok);
1655 break;
1656 case WLAN_FC_STYPE_ASSOC_RESP:
1657 wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb");
1658 handle_assoc_cb(hapd, mgmt, len, 0, ok);
1659 break;
1660 case WLAN_FC_STYPE_REASSOC_RESP:
1661 wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb");
1662 handle_assoc_cb(hapd, mgmt, len, 1, ok);
1663 break;
1664 case WLAN_FC_STYPE_PROBE_RESP:
2d8bf732 1665 wpa_printf(MSG_EXCESSIVE, "mgmt::proberesp cb");
6fc6879b
JM		 1666 break;
1667 case WLAN_FC_STYPE_DEAUTH:
1668 /* ignore */
1669 break;
5d22a1d5
JM		 1670 case WLAN_FC_STYPE_ACTION:
1671 wpa_printf(MSG_DEBUG, "mgmt::action cb");
1672 break;
6fc6879b
JM		 1673 default:
1674 printf("unknown mgmt cb frame subtype %d\n", stype);
1675 break;
1676 }
1677}
1678
1679
6fc6879b
JM		 1680int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
1681{
1682 /* TODO */
1683 return 0;
1684}
1685
1686
1687int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
1688 char *buf, size_t buflen)
1689{
1690 /* TODO */
1691 return 0;
1692}
1693
f8b1f695
JM		 1694
1695void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr,
1696 const u8 *buf, size_t len, int ack)
1697{
1698 struct sta_info *sta;
1699 struct hostapd_iface *iface = hapd->iface;
1700
1701 sta = ap_get_sta(hapd, addr);
1702 if (sta == NULL && iface->num_bss > 1) {
1703 size_t j;
1704 for (j = 0; j < iface->num_bss; j++) {
1705 hapd = iface->bss[j];
1706 sta = ap_get_sta(hapd, addr);
1707 if (sta)
1708 break;
1709 }
1710 }
1711 if (sta == NULL)
1712 return;
1713 if (sta->flags & WLAN_STA_PENDING_POLL) {
1714 wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
1715 "activity poll", MAC2STR(sta->addr),
1716 ack ? "ACKed" : "did not ACK");
1717 if (ack)
1718 sta->flags &= ~WLAN_STA_PENDING_POLL;
1719 }
1720
1721 ieee802_1x_tx_status(hapd, sta, buf, len, ack);
1722}
1723
1724
fbbfcbac
FF		 1725void ieee802_11_rx_from_unknown(struct hostapd_data *hapd, const u8 *src,
1726 int wds)
f8b1f695
JM		 1727{
1728 struct sta_info *sta;
1729
1730 sta = ap_get_sta(hapd, src);
fbbfcbac
FF		 1731 if (sta && (sta->flags & WLAN_STA_ASSOC)) {
1732 if (wds && !(sta->flags & WLAN_STA_WDS)) {
1733 wpa_printf(MSG_DEBUG, "Enable 4-address WDS mode for "
1734 "STA " MACSTR " (aid %u)",
1735 MAC2STR(sta->addr), sta->aid);
1736 sta->flags |= WLAN_STA_WDS;
bdee6fce 1737 hapd->drv.set_wds_sta(hapd, sta->addr, sta->aid, 1);
fbbfcbac 1738 }
f8b1f695 1739 return;
fbbfcbac 1740 }
f8b1f695
JM		 1741
1742 wpa_printf(MSG_DEBUG, "Data/PS-poll frame from not associated STA "
1743 MACSTR, MAC2STR(src));
1744 if (sta && (sta->flags & WLAN_STA_AUTH))
bdee6fce 1745 hapd->drv.sta_disassoc(
f8b1f695
JM		 1746 hapd, src,
1747 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1748 else
bdee6fce 1749 hapd->drv.sta_deauth(
f8b1f695
JM		 1750 hapd, src,
1751 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1752}
1753
1754
6fc6879b 1755#endif /* CONFIG_NATIVE_WINDOWS */
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