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Interworking: Fix EAP-TTLS/MSCHAP configuration
[thirdparty/hostap.git] / src / ap / ieee802_11.c
CommitLineData
6fc6879b
JM		 1/*
2 * hostapd / IEEE 802.11 Management
4dc03726 3 * Copyright (c) 2002-2011, 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"
e44f8bf2 28#include "p2p/p2p.h"
ed7a09f9 29#include "wps/wps.h"
6fc6879b 30#include "hostapd.h"
6fc6879b 31#include "beacon.h"
6fc6879b
JM		 32#include "ieee802_11_auth.h"
33#include "sta_info.h"
6fc6879b 34#include "ieee802_1x.h"
6226e38d 35#include "wpa_auth.h"
1057d78e 36#include "wmm.h"
6fc6879b
JM		 37#include "ap_list.h"
38#include "accounting.h"
6226e38d
JM		 39#include "ap_config.h"
40#include "ap_mlme.h"
dce044cc 41#include "p2p_hostapd.h"
cee7d66b 42#include "ap_drv_ops.h"
6226e38d 43#include "ieee802_11.h"
6fc6879b
JM		 44
45
46u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid)
47{
48 u8 *pos = eid;
49 int i, num, count;
50
51 if (hapd->iface->current_rates == NULL)
52 return eid;
53
54 *pos++ = WLAN_EID_SUPP_RATES;
55 num = hapd->iface->num_rates;
29448243
JM		 56 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht)
57 num++;
6fc6879b
JM		 58 if (num > 8) {
59 /* rest of the rates are encoded in Extended supported
60 * rates element */
61 num = 8;
62 }
63
64 *pos++ = num;
65 count = 0;
66 for (i = 0, count = 0; i < hapd->iface->num_rates && count < num;
67 i++) {
68 count++;
69 *pos = hapd->iface->current_rates[i].rate / 5;
70 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
71 *pos |= 0x80;
72 pos++;
73 }
74
29448243
JM		 75 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht &&
76 hapd->iface->num_rates < 8)
77 *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY;
78
6fc6879b
JM		 79 return pos;
80}
81
82
83u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid)
84{
85 u8 *pos = eid;
86 int i, num, count;
87
88 if (hapd->iface->current_rates == NULL)
89 return eid;
90
91 num = hapd->iface->num_rates;
29448243
JM		 92 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht)
93 num++;
6fc6879b
JM		 94 if (num <= 8)
95 return eid;
96 num -= 8;
97
98 *pos++ = WLAN_EID_EXT_SUPP_RATES;
99 *pos++ = num;
100 count = 0;
101 for (i = 0, count = 0; i < hapd->iface->num_rates && count < num + 8;
102 i++) {
103 count++;
104 if (count <= 8)
105 continue; /* already in SuppRates IE */
106 *pos = hapd->iface->current_rates[i].rate / 5;
107 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
108 *pos |= 0x80;
109 pos++;
110 }
111
29448243
JM		 112 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht &&
113 hapd->iface->num_rates >= 8)
114 *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY;
115
6fc6879b
JM		 116 return pos;
117}
118
119
120u16 hostapd_own_capab_info(struct hostapd_data *hapd, struct sta_info *sta,
121 int probe)
122{
123 int capab = WLAN_CAPABILITY_ESS;
124 int privacy;
125
126 if (hapd->iface->num_sta_no_short_preamble == 0 &&
127 hapd->iconf->preamble == SHORT_PREAMBLE)
128 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
129
130 privacy = hapd->conf->ssid.wep.keys_set;
131
132 if (hapd->conf->ieee802_1x &&
133 (hapd->conf->default_wep_key_len ||
134 hapd->conf->individual_wep_key_len))
135 privacy = 1;
136
137 if (hapd->conf->wpa)
138 privacy = 1;
139
140 if (sta) {
141 int policy, def_klen;
142 if (probe && sta->ssid_probe) {
143 policy = sta->ssid_probe->security_policy;
144 def_klen = sta->ssid_probe->wep.default_len;
145 } else {
146 policy = sta->ssid->security_policy;
147 def_klen = sta->ssid->wep.default_len;
148 }
149 privacy = policy != SECURITY_PLAINTEXT;
150 if (policy == SECURITY_IEEE_802_1X && def_klen == 0)
151 privacy = 0;
152 }
153
154 if (privacy)
155 capab |= WLAN_CAPABILITY_PRIVACY;
156
157 if (hapd->iface->current_mode &&
158 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G &&
159 hapd->iface->num_sta_no_short_slot_time == 0)
160 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
161
6fc6879b
JM		 162 return capab;
163}
164
165
6fc6879b
JM		 166void ieee802_11_print_ssid(char *buf, const u8 *ssid, u8 len)
167{
168 int i;
169 if (len > HOSTAPD_MAX_SSID_LEN)
170 len = HOSTAPD_MAX_SSID_LEN;
171 for (i = 0; i < len; i++) {
172 if (ssid[i] >= 32 && ssid[i] < 127)
173 buf[i] = ssid[i];
174 else
175 buf[i] = '.';
176 }
177 buf[len] = '\0';
178}
179
180
6fc6879b 181static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta,
b57e086c
JM		 182 u16 auth_transaction, const u8 *challenge,
183 int iswep)
6fc6879b
JM		 184{
185 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
186 HOSTAPD_LEVEL_DEBUG,
187 "authentication (shared key, transaction %d)",
188 auth_transaction);
189
190 if (auth_transaction == 1) {
191 if (!sta->challenge) {
192 /* Generate a pseudo-random challenge */
193 u8 key[8];
0b04889f 194 struct os_time now;
6fc6879b
JM		 195 int r;
196 sta->challenge = os_zalloc(WLAN_AUTH_CHALLENGE_LEN);
197 if (sta->challenge == NULL)
198 return WLAN_STATUS_UNSPECIFIED_FAILURE;
199
0b04889f
PE		 200 os_get_time(&now);
201 r = os_random();
202 os_memcpy(key, &now.sec, 4);
6fc6879b 203 os_memcpy(key + 4, &r, 4);
8ef16831
JM		 204 rc4_skip(key, sizeof(key), 0,
205 sta->challenge, WLAN_AUTH_CHALLENGE_LEN);
6fc6879b
JM		 206 }
207 return 0;
208 }
209
210 if (auth_transaction != 3)
211 return WLAN_STATUS_UNSPECIFIED_FAILURE;
212
213 /* Transaction 3 */
214 if (!iswep || !sta->challenge || !challenge ||
215 os_memcmp(sta->challenge, challenge, WLAN_AUTH_CHALLENGE_LEN)) {
216 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
217 HOSTAPD_LEVEL_INFO,
218 "shared key authentication - invalid "
219 "challenge-response");
220 return WLAN_STATUS_CHALLENGE_FAIL;
221 }
222
223 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
224 HOSTAPD_LEVEL_DEBUG,
225 "authentication OK (shared key)");
226#ifdef IEEE80211_REQUIRE_AUTH_ACK
227 /* Station will be marked authenticated if it ACKs the
228 * authentication reply. */
229#else
230 sta->flags |= WLAN_STA_AUTH;
231 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
232#endif
233 os_free(sta->challenge);
234 sta->challenge = NULL;
235
236 return 0;
237}
238
239
240static void send_auth_reply(struct hostapd_data *hapd,
241 const u8 *dst, const u8 *bssid,
242 u16 auth_alg, u16 auth_transaction, u16 resp,
243 const u8 *ies, size_t ies_len)
244{
245 struct ieee80211_mgmt *reply;
246 u8 *buf;
247 size_t rlen;
248
249 rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth) + ies_len;
250 buf = os_zalloc(rlen);
251 if (buf == NULL)
252 return;
253
254 reply = (struct ieee80211_mgmt *) buf;
255 reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
256 WLAN_FC_STYPE_AUTH);
6fc6879b
JM		 257 os_memcpy(reply->da, dst, ETH_ALEN);
258 os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
259 os_memcpy(reply->bssid, bssid, ETH_ALEN);
260
261 reply->u.auth.auth_alg = host_to_le16(auth_alg);
262 reply->u.auth.auth_transaction = host_to_le16(auth_transaction);
263 reply->u.auth.status_code = host_to_le16(resp);
264
265 if (ies && ies_len)
266 os_memcpy(reply->u.auth.variable, ies, ies_len);
267
268 wpa_printf(MSG_DEBUG, "authentication reply: STA=" MACSTR
269 " auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu)",
270 MAC2STR(dst), auth_alg, auth_transaction,
271 resp, (unsigned long) ies_len);
8cfa3527 272 if (hostapd_drv_send_mlme(hapd, reply, rlen, 0) < 0)
6fc6879b
JM		 273 perror("send_auth_reply: send");
274
275 os_free(buf);
276}
277
278
279#ifdef CONFIG_IEEE80211R
280static void handle_auth_ft_finish(void *ctx, const u8 *dst, const u8 *bssid,
281 u16 auth_transaction, u16 status,
282 const u8 *ies, size_t ies_len)
283{
284 struct hostapd_data *hapd = ctx;
285 struct sta_info *sta;
286
287 send_auth_reply(hapd, dst, bssid, WLAN_AUTH_FT, auth_transaction,
288 status, ies, ies_len);
289
290 if (status != WLAN_STATUS_SUCCESS)
291 return;
292
293 sta = ap_get_sta(hapd, dst);
294 if (sta == NULL)
295 return;
296
297 hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211,
298 HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)");
299 sta->flags |= WLAN_STA_AUTH;
300 mlme_authenticate_indication(hapd, sta);
301}
302#endif /* CONFIG_IEEE80211R */
303
304
b57e086c
JM		 305static void handle_auth(struct hostapd_data *hapd,
306 const struct ieee80211_mgmt *mgmt, size_t len)
6fc6879b
JM		 307{
308 u16 auth_alg, auth_transaction, status_code;
309 u16 resp = WLAN_STATUS_SUCCESS;
310 struct sta_info *sta = NULL;
311 int res;
312 u16 fc;
b57e086c 313 const u8 *challenge = NULL;
6fc6879b
JM		 314 u32 session_timeout, acct_interim_interval;
315 int vlan_id = 0;
05ab9712
MB		 316 u8 psk[PMK_LEN];
317 int has_psk = 0;
6fc6879b
JM		 318 u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN];
319 size_t resp_ies_len = 0;
320
321 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
322 printf("handle_auth - too short payload (len=%lu)\n",
323 (unsigned long) len);
324 return;
325 }
326
327 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
328 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
329 status_code = le_to_host16(mgmt->u.auth.status_code);
330 fc = le_to_host16(mgmt->frame_control);
331
332 if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) +
333 2 + WLAN_AUTH_CHALLENGE_LEN &&
334 mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE &&
335 mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN)
336 challenge = &mgmt->u.auth.variable[2];
337
338 wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d "
339 "auth_transaction=%d status_code=%d wep=%d%s",
340 MAC2STR(mgmt->sa), auth_alg, auth_transaction,
341 status_code, !!(fc & WLAN_FC_ISWEP),
342 challenge ? " challenge" : "");
343
6fc6879b
JM		 344 if (hapd->tkip_countermeasures) {
345 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
346 goto fail;
347 }
348
349 if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) &&
350 auth_alg == WLAN_AUTH_OPEN) ||
351#ifdef CONFIG_IEEE80211R
0bf927a0 352 (hapd->conf->wpa && wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt) &&
6fc6879b
JM		 353 auth_alg == WLAN_AUTH_FT) ||
354#endif /* CONFIG_IEEE80211R */
355 ((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) &&
356 auth_alg == WLAN_AUTH_SHARED_KEY))) {
357 printf("Unsupported authentication algorithm (%d)\n",
358 auth_alg);
359 resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
360 goto fail;
361 }
362
363 if (!(auth_transaction == 1 ||
364 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) {
365 printf("Unknown authentication transaction number (%d)\n",
366 auth_transaction);
367 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
368 goto fail;
369 }
370
371 if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) {
372 printf("Station " MACSTR " not allowed to authenticate.\n",
373 MAC2STR(mgmt->sa));
374 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
375 goto fail;
376 }
377
378 res = hostapd_allowed_address(hapd, mgmt->sa, (u8 *) mgmt, len,
379 &session_timeout,
05ab9712
MB		 380 &acct_interim_interval, &vlan_id,
381 psk, &has_psk);
382
6fc6879b
JM		 383 if (res == HOSTAPD_ACL_REJECT) {
384 printf("Station " MACSTR " not allowed to authenticate.\n",
385 MAC2STR(mgmt->sa));
386 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
387 goto fail;
388 }
389 if (res == HOSTAPD_ACL_PENDING) {
390 wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR
391 " waiting for an external authentication",
392 MAC2STR(mgmt->sa));
393 /* Authentication code will re-send the authentication frame
394 * after it has received (and cached) information from the
395 * external source. */
396 return;
397 }
398
399 sta = ap_sta_add(hapd, mgmt->sa);
400 if (!sta) {
401 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
402 goto fail;
403 }
404
405 if (vlan_id > 0) {
406 if (hostapd_get_vlan_id_ifname(hapd->conf->vlan,
1066c1ee 407 vlan_id) == NULL) {
6fc6879b
JM		 408 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
409 HOSTAPD_LEVEL_INFO, "Invalid VLAN ID "
410 "%d received from RADIUS server",
411 vlan_id);
412 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
413 goto fail;
414 }
415 sta->vlan_id = vlan_id;
416 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
417 HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id);
418 }
419
05ab9712
MB		 420 if (has_psk && hapd->conf->wpa_psk_radius != PSK_RADIUS_IGNORED) {
421 os_free(sta->psk);
422 sta->psk = os_malloc(PMK_LEN);
423 if (sta->psk)
424 os_memcpy(sta->psk, psk, PMK_LEN);
425 } else {
426 os_free(sta->psk);
427 sta->psk = NULL;
428 }
429
6fc6879b
JM		 430 sta->flags &= ~WLAN_STA_PREAUTH;
431 ieee802_1x_notify_pre_auth(sta->eapol_sm, 0);
432
5843e1c9 433 if (hapd->conf->acct_interim_interval == 0 && acct_interim_interval)
6fc6879b
JM		 434 sta->acct_interim_interval = acct_interim_interval;
435 if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT)
436 ap_sta_session_timeout(hapd, sta, session_timeout);
437 else
438 ap_sta_no_session_timeout(hapd, sta);
439
440 switch (auth_alg) {
441 case WLAN_AUTH_OPEN:
442 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
443 HOSTAPD_LEVEL_DEBUG,
444 "authentication OK (open system)");
445#ifdef IEEE80211_REQUIRE_AUTH_ACK
446 /* Station will be marked authenticated if it ACKs the
447 * authentication reply. */
448#else
449 sta->flags |= WLAN_STA_AUTH;
450 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
451 sta->auth_alg = WLAN_AUTH_OPEN;
452 mlme_authenticate_indication(hapd, sta);
453#endif
454 break;
455 case WLAN_AUTH_SHARED_KEY:
456 resp = auth_shared_key(hapd, sta, auth_transaction, challenge,
457 fc & WLAN_FC_ISWEP);
458 sta->auth_alg = WLAN_AUTH_SHARED_KEY;
459 mlme_authenticate_indication(hapd, sta);
460 if (sta->challenge && auth_transaction == 1) {
461 resp_ies[0] = WLAN_EID_CHALLENGE;
462 resp_ies[1] = WLAN_AUTH_CHALLENGE_LEN;
463 os_memcpy(resp_ies + 2, sta->challenge,
464 WLAN_AUTH_CHALLENGE_LEN);
465 resp_ies_len = 2 + WLAN_AUTH_CHALLENGE_LEN;
466 }
467 break;
468#ifdef CONFIG_IEEE80211R
469 case WLAN_AUTH_FT:
470 sta->auth_alg = WLAN_AUTH_FT;
471 if (sta->wpa_sm == NULL)
472 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
473 sta->addr);
474 if (sta->wpa_sm == NULL) {
475 wpa_printf(MSG_DEBUG, "FT: Failed to initialize WPA "
476 "state machine");
477 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
478 goto fail;
479 }
480 wpa_ft_process_auth(sta->wpa_sm, mgmt->bssid,
481 auth_transaction, mgmt->u.auth.variable,
482 len - IEEE80211_HDRLEN -
483 sizeof(mgmt->u.auth),
484 handle_auth_ft_finish, hapd);
485 /* handle_auth_ft_finish() callback will complete auth. */
486 return;
487#endif /* CONFIG_IEEE80211R */
488 }
489
490 fail:
491 send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg,
492 auth_transaction + 1, resp, resp_ies, resp_ies_len);
493}
494
495
d42a62b3
JM		 496static int hostapd_get_aid(struct hostapd_data *hapd, struct sta_info *sta)
497{
2991469c
JM		 498 int i, j = 32, aid;
499
d42a62b3
JM		 500 /* get a unique AID */
501 if (sta->aid > 0) {
502 wpa_printf(MSG_DEBUG, " old AID %d", sta->aid);
503 return 0;
504 }
505
2991469c
JM		 506 for (i = 0; i < AID_WORDS; i++) {
507 if (hapd->sta_aid[i] == (u32) -1)
508 continue;
509 for (j = 0; j < 32; j++) {
510 if (!(hapd->sta_aid[i] & BIT(j)))
511 break;
512 }
513 if (j < 32)
d42a62b3 514 break;
d42a62b3 515 }
2991469c
JM		 516 if (j == 32)
517 return -1;
518 aid = i * 32 + j + 1;
519 if (aid > 2007)
520 return -1;
d42a62b3 521
2991469c
JM		 522 sta->aid = aid;
523 hapd->sta_aid[i] |= BIT(j);
d42a62b3
JM		 524 wpa_printf(MSG_DEBUG, " new AID %d", sta->aid);
525 return 0;
526}
527
528
5586f500
JM		 529static u16 check_ssid(struct hostapd_data *hapd, struct sta_info *sta,
530 const u8 *ssid_ie, size_t ssid_ie_len)
6fc6879b 531{
5586f500
JM		 532 if (ssid_ie == NULL)
533 return WLAN_STATUS_UNSPECIFIED_FAILURE;
6fc6879b 534
5586f500
JM		 535 if (ssid_ie_len != hapd->conf->ssid.ssid_len ||
536 os_memcmp(ssid_ie, hapd->conf->ssid.ssid, ssid_ie_len) != 0) {
537 char ssid_txt[33];
538 ieee802_11_print_ssid(ssid_txt, ssid_ie, ssid_ie_len);
539 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
540 HOSTAPD_LEVEL_INFO,
541 "Station tried to associate with unknown SSID "
542 "'%s'", ssid_txt);
543 return WLAN_STATUS_UNSPECIFIED_FAILURE;
b0194fe0
JM		 544 }
545
5586f500
JM		 546 return WLAN_STATUS_SUCCESS;
547}
6fc6879b 548
6fc6879b 549
5586f500
JM		 550static u16 check_wmm(struct hostapd_data *hapd, struct sta_info *sta,
551 const u8 *wmm_ie, size_t wmm_ie_len)
552{
3ae0800c 553 sta->flags &= ~WLAN_STA_WMM;
5d061637 554 sta->qosinfo = 0;
5586f500 555 if (wmm_ie && hapd->conf->wmm_enabled) {
5f32f79c 556 struct wmm_information_element *wmm;
5f32f79c 557
c84b868a 558 if (!hostapd_eid_wmm_valid(hapd, wmm_ie, wmm_ie_len)) {
6fc6879b
JM		 559 hostapd_logger(hapd, sta->addr,
560 HOSTAPD_MODULE_WPA,
561 HOSTAPD_LEVEL_DEBUG,
3ae0800c 562 "invalid WMM element in association "
6fc6879b 563 "request");
5f32f79c
EP		 564 return WLAN_STATUS_UNSPECIFIED_FAILURE;
565 }
566
567 sta->flags |= WLAN_STA_WMM;
568 wmm = (struct wmm_information_element *) wmm_ie;
5d061637 569 sta->qosinfo = wmm->qos_info;
6fc6879b 570 }
5586f500
JM		 571 return WLAN_STATUS_SUCCESS;
572}
6fc6879b 573
5586f500
JM		 574
575static u16 copy_supp_rates(struct hostapd_data *hapd, struct sta_info *sta,
576 struct ieee802_11_elems *elems)
577{
578 if (!elems->supp_rates) {
579 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
6fc6879b
JM		 580 HOSTAPD_LEVEL_DEBUG,
581 "No supported rates element in AssocReq");
5586f500 582 return WLAN_STATUS_UNSPECIFIED_FAILURE;
6fc6879b
JM		 583 }
584
5586f500
JM		 585 if (elems->supp_rates_len > sizeof(sta->supported_rates)) {
586 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
6fc6879b
JM		 587 HOSTAPD_LEVEL_DEBUG,
588 "Invalid supported rates element length %d",
5586f500
JM		 589 elems->supp_rates_len);
590 return WLAN_STATUS_UNSPECIFIED_FAILURE;
6fc6879b
JM		 591 }
592
593 os_memset(sta->supported_rates, 0, sizeof(sta->supported_rates));
5586f500
JM		 594 os_memcpy(sta->supported_rates, elems->supp_rates,
595 elems->supp_rates_len);
596 sta->supported_rates_len = elems->supp_rates_len;
6fc6879b 597
5586f500
JM		 598 if (elems->ext_supp_rates) {
599 if (elems->supp_rates_len + elems->ext_supp_rates_len >
6fc6879b 600 sizeof(sta->supported_rates)) {
5586f500 601 hostapd_logger(hapd, sta->addr,
6fc6879b
JM		 602 HOSTAPD_MODULE_IEEE80211,
603 HOSTAPD_LEVEL_DEBUG,
604 "Invalid supported rates element length"
5586f500
JM		 605 " %d+%d", elems->supp_rates_len,
606 elems->ext_supp_rates_len);
607 return WLAN_STATUS_UNSPECIFIED_FAILURE;
6fc6879b
JM		 608 }
609
5586f500
JM		 610 os_memcpy(sta->supported_rates + elems->supp_rates_len,
611 elems->ext_supp_rates, elems->ext_supp_rates_len);
612 sta->supported_rates_len += elems->ext_supp_rates_len;
6fc6879b
JM		 613 }
614
5586f500
JM		 615 return WLAN_STATUS_SUCCESS;
616}
617
618
5586f500 619static u16 check_assoc_ies(struct hostapd_data *hapd, struct sta_info *sta,
b57e086c 620 const u8 *ies, size_t ies_len, int reassoc)
5586f500
JM		 621{
622 struct ieee802_11_elems elems;
623 u16 resp;
ba091c06 624 const u8 *wpa_ie;
5586f500
JM		 625 size_t wpa_ie_len;
626
627 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) {
628 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
629 HOSTAPD_LEVEL_INFO, "Station sent an invalid "
630 "association request");
631 return WLAN_STATUS_UNSPECIFIED_FAILURE;
632 }
633
634 resp = check_ssid(hapd, sta, elems.ssid, elems.ssid_len);
635 if (resp != WLAN_STATUS_SUCCESS)
636 return resp;
637 resp = check_wmm(hapd, sta, elems.wmm, elems.wmm_len);
638 if (resp != WLAN_STATUS_SUCCESS)
639 return resp;
640 resp = copy_supp_rates(hapd, sta, &elems);
641 if (resp != WLAN_STATUS_SUCCESS)
642 return resp;
d45354be 643#ifdef CONFIG_IEEE80211N
f39b07d7 644 resp = copy_sta_ht_capab(hapd, sta, elems.ht_capabilities,
5586f500
JM		 645 elems.ht_capabilities_len);
646 if (resp != WLAN_STATUS_SUCCESS)
647 return resp;
29448243
JM		 648 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht &&
649 !(sta->flags & WLAN_STA_HT)) {
650 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
651 HOSTAPD_LEVEL_INFO, "Station does not support "
652 "mandatory HT PHY - reject association");
653 return WLAN_STATUS_ASSOC_DENIED_NO_HT;
654 }
d45354be 655#endif /* CONFIG_IEEE80211N */
5586f500 656
6fc6879b
JM		 657 if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) {
658 wpa_ie = elems.rsn_ie;
659 wpa_ie_len = elems.rsn_ie_len;
660 } else if ((hapd->conf->wpa & WPA_PROTO_WPA) &&
661 elems.wpa_ie) {
662 wpa_ie = elems.wpa_ie;
663 wpa_ie_len = elems.wpa_ie_len;
664 } else {
665 wpa_ie = NULL;
666 wpa_ie_len = 0;
667 }
5586f500 668
ad08c363 669#ifdef CONFIG_WPS
17f6b900 670 sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS | WLAN_STA_WPS2);
c47cf42e
JM		 671 if (hapd->conf->wps_state && elems.wps_ie) {
672 wpa_printf(MSG_DEBUG, "STA included WPS IE in (Re)Association "
673 "Request - assume WPS is used");
674 sta->flags |= WLAN_STA_WPS;
675 wpabuf_free(sta->wps_ie);
16e46ec0
JM		 676 sta->wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
677 WPS_IE_VENDOR_TYPE);
17f6b900
JM		 678 if (sta->wps_ie && wps_is_20(sta->wps_ie)) {
679 wpa_printf(MSG_DEBUG, "WPS: STA supports WPS 2.0");
680 sta->flags |= WLAN_STA_WPS2;
681 }
c47cf42e
JM		 682 wpa_ie = NULL;
683 wpa_ie_len = 0;
54f489be
JM		 684 if (sta->wps_ie && wps_validate_assoc_req(sta->wps_ie) < 0) {
685 wpa_printf(MSG_DEBUG, "WPS: Invalid WPS IE in "
686 "(Re)Association Request - reject");
687 return WLAN_STATUS_INVALID_IE;
688 }
c47cf42e
JM		 689 } else if (hapd->conf->wps_state && wpa_ie == NULL) {
690 wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE in "
691 "(Re)Association Request - possible WPS use");
692 sta->flags |= WLAN_STA_MAYBE_WPS;
ad08c363
JM		 693 } else
694#endif /* CONFIG_WPS */
6fc6879b 695 if (hapd->conf->wpa && wpa_ie == NULL) {
5586f500
JM		 696 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
697 HOSTAPD_LEVEL_INFO,
698 "No WPA/RSN IE in association request");
699 return WLAN_STATUS_INVALID_IE;
6fc6879b
JM		 700 }
701
702 if (hapd->conf->wpa && wpa_ie) {
703 int res;
704 wpa_ie -= 2;
705 wpa_ie_len += 2;
706 if (sta->wpa_sm == NULL)
707 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
708 sta->addr);
709 if (sta->wpa_sm == NULL) {
5586f500
JM		 710 wpa_printf(MSG_WARNING, "Failed to initialize WPA "
711 "state machine");
712 return WLAN_STATUS_UNSPECIFIED_FAILURE;
6fc6879b
JM		 713 }
714 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
715 wpa_ie, wpa_ie_len,
716 elems.mdie, elems.mdie_len);
717 if (res == WPA_INVALID_GROUP)
718 resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
719 else if (res == WPA_INVALID_PAIRWISE)
720 resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
721 else if (res == WPA_INVALID_AKMP)
722 resp = WLAN_STATUS_AKMP_NOT_VALID;
723 else if (res == WPA_ALLOC_FAIL)
724 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
725#ifdef CONFIG_IEEE80211W
726 else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION)
9a9876bf 727 resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
6fc6879b 728 else if (res == WPA_INVALID_MGMT_GROUP_CIPHER)
9a9876bf 729 resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
6fc6879b
JM		 730#endif /* CONFIG_IEEE80211W */
731 else if (res == WPA_INVALID_MDIE)
732 resp = WLAN_STATUS_INVALID_MDIE;
733 else if (res != WPA_IE_OK)
734 resp = WLAN_STATUS_INVALID_IE;
735 if (resp != WLAN_STATUS_SUCCESS)
5586f500 736 return resp;
f3f7540e 737#ifdef CONFIG_IEEE80211W
45c94154
JM		 738 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
739 sta->sa_query_count > 0)
740 ap_check_sa_query_timeout(hapd, sta);
8f4617c6
JM		 741 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
742 (!reassoc || sta->auth_alg != WLAN_AUTH_FT)) {
5d22a1d5 743 /*
93b76319
JM		 744 * STA has already been associated with MFP and SA
745 * Query timeout has not been reached. Reject the
746 * association attempt temporarily and start SA Query,
747 * if one is not pending.
5d22a1d5
JM		 748 */
749
93b76319
JM		 750 if (sta->sa_query_count == 0)
751 ap_sta_start_sa_query(hapd, sta);
5d22a1d5 752
5586f500 753 return WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;
5d22a1d5
JM		 754 }
755
f3f7540e
JM		 756 if (wpa_auth_uses_mfp(sta->wpa_sm))
757 sta->flags |= WLAN_STA_MFP;
758 else
759 sta->flags &= ~WLAN_STA_MFP;
760#endif /* CONFIG_IEEE80211W */
6fc6879b
JM		 761
762#ifdef CONFIG_IEEE80211R
763 if (sta->auth_alg == WLAN_AUTH_FT) {
764 if (!reassoc) {
765 wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried "
766 "to use association (not "
767 "re-association) with FT auth_alg",
768 MAC2STR(sta->addr));
5586f500 769 return WLAN_STATUS_UNSPECIFIED_FAILURE;
6fc6879b
JM		 770 }
771
5586f500
JM		 772 resp = wpa_ft_validate_reassoc(sta->wpa_sm, ies,
773 ies_len);
6fc6879b 774 if (resp != WLAN_STATUS_SUCCESS)
5586f500 775 return resp;
6fc6879b
JM		 776 }
777#endif /* CONFIG_IEEE80211R */
5586f500 778
ff36ff00
JM		 779#ifdef CONFIG_IEEE80211N
780 if ((sta->flags & WLAN_STA_HT) &&
781 wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) {
5586f500
JM		 782 hostapd_logger(hapd, sta->addr,
783 HOSTAPD_MODULE_IEEE80211,
784 HOSTAPD_LEVEL_INFO,
785 "Station tried to use TKIP with HT "
786 "association");
787 return WLAN_STATUS_CIPHER_REJECTED_PER_POLICY;
ff36ff00
JM		 788 }
789#endif /* CONFIG_IEEE80211N */
a8d05fca
JM		 790 } else
791 wpa_auth_sta_no_wpa(sta->wpa_sm);
6fc6879b 792
b305c684
JM		 793#ifdef CONFIG_P2P
794 if (elems.p2p) {
795 wpabuf_free(sta->p2p_ie);
796 sta->p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
797 P2P_IE_VENDOR_TYPE);
8ccbe415 798
b305c684
JM		 799 } else {
800 wpabuf_free(sta->p2p_ie);
801 sta->p2p_ie = NULL;
802 }
3f4ce13f
JM		 803
804 p2p_group_notif_assoc(hapd->p2p_group, sta->addr, ies, ies_len);
b305c684
JM		 805#endif /* CONFIG_P2P */
806
5586f500
JM		 807 return WLAN_STATUS_SUCCESS;
808}
809
810
811static void send_deauth(struct hostapd_data *hapd, const u8 *addr,
812 u16 reason_code)
813{
814 int send_len;
815 struct ieee80211_mgmt reply;
816
817 os_memset(&reply, 0, sizeof(reply));
818 reply.frame_control =
819 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_DEAUTH);
820 os_memcpy(reply.da, addr, ETH_ALEN);
821 os_memcpy(reply.sa, hapd->own_addr, ETH_ALEN);
822 os_memcpy(reply.bssid, hapd->own_addr, ETH_ALEN);
823
824 send_len = IEEE80211_HDRLEN + sizeof(reply.u.deauth);
825 reply.u.deauth.reason_code = host_to_le16(reason_code);
826
8cfa3527 827 if (hostapd_drv_send_mlme(hapd, &reply, send_len, 0) < 0)
5586f500
JM		 828 wpa_printf(MSG_INFO, "Failed to send deauth: %s",
829 strerror(errno));
830}
831
832
833static void send_assoc_resp(struct hostapd_data *hapd, struct sta_info *sta,
b57e086c 834 u16 status_code, int reassoc, const u8 *ies,
5586f500
JM		 835 size_t ies_len)
836{
837 int send_len;
838 u8 buf[sizeof(struct ieee80211_mgmt) + 1024];
839 struct ieee80211_mgmt *reply;
840 u8 *p;
841
842 os_memset(buf, 0, sizeof(buf));
843 reply = (struct ieee80211_mgmt *) buf;
844 reply->frame_control =
845 IEEE80211_FC(WLAN_FC_TYPE_MGMT,
846 (reassoc ? WLAN_FC_STYPE_REASSOC_RESP :
847 WLAN_FC_STYPE_ASSOC_RESP));
848 os_memcpy(reply->da, sta->addr, ETH_ALEN);
849 os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
850 os_memcpy(reply->bssid, hapd->own_addr, ETH_ALEN);
851
852 send_len = IEEE80211_HDRLEN;
853 send_len += sizeof(reply->u.assoc_resp);
854 reply->u.assoc_resp.capab_info =
855 host_to_le16(hostapd_own_capab_info(hapd, sta, 0));
856 reply->u.assoc_resp.status_code = host_to_le16(status_code);
857 reply->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0)
858 | BIT(14) | BIT(15));
859 /* Supported rates */
860 p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable);
861 /* Extended supported rates */
862 p = hostapd_eid_ext_supp_rates(hapd, p);
5586f500
JM		 863
864#ifdef CONFIG_IEEE80211R
865 if (status_code == WLAN_STATUS_SUCCESS) {
866 /* IEEE 802.11r: Mobility Domain Information, Fast BSS
867 * Transition Information, RSN, [RIC Response] */
868 p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p,
869 buf + sizeof(buf) - p,
870 sta->auth_alg, ies, ies_len);
871 }
872#endif /* CONFIG_IEEE80211R */
873
874#ifdef CONFIG_IEEE80211W
875 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY)
876 p = hostapd_eid_assoc_comeback_time(hapd, sta, p);
877#endif /* CONFIG_IEEE80211W */
878
1bc774a1
JM		 879#ifdef CONFIG_IEEE80211N
880 p = hostapd_eid_ht_capabilities(hapd, p);
881 p = hostapd_eid_ht_operation(hapd, p);
882#endif /* CONFIG_IEEE80211N */
883
1161ff1e
JM		 884 p = hostapd_eid_ext_capab(hapd, p);
885
1bc774a1
JM		 886 if (sta->flags & WLAN_STA_WMM)
887 p = hostapd_eid_wmm(hapd, p);
888
ed7a09f9 889#ifdef CONFIG_WPS
71093e5e
JM		 890 if ((sta->flags & WLAN_STA_WPS) ||
891 ((sta->flags & WLAN_STA_MAYBE_WPS) && hapd->conf->wpa)) {
ed7a09f9
JM		 892 struct wpabuf *wps = wps_build_assoc_resp_ie();
893 if (wps) {
894 os_memcpy(p, wpabuf_head(wps), wpabuf_len(wps));
895 p += wpabuf_len(wps);
896 wpabuf_free(wps);
897 }
898 }
899#endif /* CONFIG_WPS */
900
8ccbe415
JM		 901#ifdef CONFIG_P2P
902 if (sta->p2p_ie) {
903 struct wpabuf *p2p_resp_ie;
904 enum p2p_status_code status;
905 switch (status_code) {
906 case WLAN_STATUS_SUCCESS:
907 status = P2P_SC_SUCCESS;
908 break;
909 case WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA:
910 status = P2P_SC_FAIL_LIMIT_REACHED;
911 break;
912 default:
913 status = P2P_SC_FAIL_INVALID_PARAMS;
914 break;
915 }
916 p2p_resp_ie = p2p_group_assoc_resp_ie(hapd->p2p_group, status);
917 if (p2p_resp_ie) {
918 os_memcpy(p, wpabuf_head(p2p_resp_ie),
919 wpabuf_len(p2p_resp_ie));
920 p += wpabuf_len(p2p_resp_ie);
921 wpabuf_free(p2p_resp_ie);
922 }
923 }
924#endif /* CONFIG_P2P */
925
962473c1
JM		 926#ifdef CONFIG_P2P_MANAGER
927 if (hapd->conf->p2p & P2P_MANAGE)
928 p = hostapd_eid_p2p_manage(hapd, p);
929#endif /* CONFIG_P2P_MANAGER */
930
5586f500
JM		 931 send_len += p - reply->u.assoc_resp.variable;
932
8cfa3527 933 if (hostapd_drv_send_mlme(hapd, reply, send_len, 0) < 0)
5586f500
JM		 934 wpa_printf(MSG_INFO, "Failed to send assoc resp: %s",
935 strerror(errno));
936}
937
938
939static void handle_assoc(struct hostapd_data *hapd,
b57e086c
JM		 940 const struct ieee80211_mgmt *mgmt, size_t len,
941 int reassoc)
5586f500
JM		 942{
943 u16 capab_info, listen_interval;
944 u16 resp = WLAN_STATUS_SUCCESS;
b57e086c 945 const u8 *pos;
5586f500
JM		 946 int left, i;
947 struct sta_info *sta;
948
949 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
950 sizeof(mgmt->u.assoc_req))) {
951 printf("handle_assoc(reassoc=%d) - too short payload (len=%lu)"
952 "\n", reassoc, (unsigned long) len);
953 return;
954 }
955
956 if (reassoc) {
957 capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info);
958 listen_interval = le_to_host16(
959 mgmt->u.reassoc_req.listen_interval);
960 wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR
961 " capab_info=0x%02x listen_interval=%d current_ap="
962 MACSTR,
963 MAC2STR(mgmt->sa), capab_info, listen_interval,
964 MAC2STR(mgmt->u.reassoc_req.current_ap));
965 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req));
966 pos = mgmt->u.reassoc_req.variable;
967 } else {
968 capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
969 listen_interval = le_to_host16(
970 mgmt->u.assoc_req.listen_interval);
971 wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR
972 " capab_info=0x%02x listen_interval=%d",
973 MAC2STR(mgmt->sa), capab_info, listen_interval);
974 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req));
975 pos = mgmt->u.assoc_req.variable;
976 }
977
978 sta = ap_get_sta(hapd, mgmt->sa);
979#ifdef CONFIG_IEEE80211R
980 if (sta && sta->auth_alg == WLAN_AUTH_FT &&
981 (sta->flags & WLAN_STA_AUTH) == 0) {
982 wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate "
983 "prior to authentication since it is using "
984 "over-the-DS FT", MAC2STR(mgmt->sa));
985 } else
986#endif /* CONFIG_IEEE80211R */
987 if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
988 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
989 HOSTAPD_LEVEL_INFO, "Station tried to "
990 "associate before authentication "
991 "(aid=%d flags=0x%x)",
992 sta ? sta->aid : -1,
993 sta ? sta->flags : 0);
994 send_deauth(hapd, mgmt->sa,
995 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA);
996 return;
997 }
998
999 if (hapd->tkip_countermeasures) {
1000 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
1001 goto fail;
1002 }
1003
1004 if (listen_interval > hapd->conf->max_listen_interval) {
1005 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1006 HOSTAPD_LEVEL_DEBUG,
1007 "Too large Listen Interval (%d)",
1008 listen_interval);
1009 resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE;
1010 goto fail;
1011 }
1012
1013 /* followed by SSID and Supported rates; and HT capabilities if 802.11n
1014 * is used */
1015 resp = check_assoc_ies(hapd, sta, pos, left, reassoc);
1016 if (resp != WLAN_STATUS_SUCCESS)
1017 goto fail;
1018
1019 if (hostapd_get_aid(hapd, sta) < 0) {
1020 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1021 HOSTAPD_LEVEL_INFO, "No room for more AIDs");
1022 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
1023 goto fail;
1024 }
1025
1026 sta->capability = capab_info;
1027 sta->listen_interval = listen_interval;
1028
6fc6879b
JM		 1029 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
1030 sta->flags |= WLAN_STA_NONERP;
1031 for (i = 0; i < sta->supported_rates_len; i++) {
1032 if ((sta->supported_rates[i] & 0x7f) > 22) {
1033 sta->flags &= ~WLAN_STA_NONERP;
1034 break;
1035 }
1036 }
1037 if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) {
1038 sta->nonerp_set = 1;
1039 hapd->iface->num_sta_non_erp++;
1040 if (hapd->iface->num_sta_non_erp == 1)
1041 ieee802_11_set_beacons(hapd->iface);
1042 }
1043
1044 if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) &&
1045 !sta->no_short_slot_time_set) {
1046 sta->no_short_slot_time_set = 1;
1047 hapd->iface->num_sta_no_short_slot_time++;
1048 if (hapd->iface->current_mode->mode ==
1049 HOSTAPD_MODE_IEEE80211G &&
1050 hapd->iface->num_sta_no_short_slot_time == 1)
1051 ieee802_11_set_beacons(hapd->iface);
1052 }
1053
1054 if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1055 sta->flags |= WLAN_STA_SHORT_PREAMBLE;
1056 else
1057 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
1058
1059 if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
1060 !sta->no_short_preamble_set) {
1061 sta->no_short_preamble_set = 1;
1062 hapd->iface->num_sta_no_short_preamble++;
1063 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
1064 && hapd->iface->num_sta_no_short_preamble == 1)
1065 ieee802_11_set_beacons(hapd->iface);
1066 }
1067
d45354be 1068#ifdef CONFIG_IEEE80211N
5586f500 1069 update_ht_state(hapd, sta);
d45354be 1070#endif /* CONFIG_IEEE80211N */
de9289c8 1071
6fc6879b
JM		 1072 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1073 HOSTAPD_LEVEL_DEBUG,
1074 "association OK (aid %d)", sta->aid);
1075 /* Station will be marked associated, after it acknowledges AssocResp
1076 */
b8281964 1077 sta->flags |= WLAN_STA_ASSOC_REQ_OK;
6fc6879b 1078
6f5c8dbd
JM		 1079#ifdef CONFIG_IEEE80211W
1080 if ((sta->flags & WLAN_STA_MFP) && sta->sa_query_timed_out) {
1081 wpa_printf(MSG_DEBUG, "Allowing %sassociation after timed out "
1082 "SA Query procedure", reassoc ? "re" : "");
1083 /* TODO: Send a protected Disassociate frame to the STA using
1084 * the old key and Reason Code "Previous Authentication no
1085 * longer valid". Make sure this is only sent protected since
1086 * unprotected frame would be received by the STA that is now
1087 * trying to associate.
1088 */
1089 }
1090#endif /* CONFIG_IEEE80211W */
1091
1e858f69
JM		 1092 if (reassoc) {
1093 os_memcpy(sta->previous_ap, mgmt->u.reassoc_req.current_ap,
1094 ETH_ALEN);
1095 }
1096
6fc6879b
JM		 1097 if (sta->last_assoc_req)
1098 os_free(sta->last_assoc_req);
1099 sta->last_assoc_req = os_malloc(len);
1100 if (sta->last_assoc_req)
1101 os_memcpy(sta->last_assoc_req, mgmt, len);
1102
1103 /* Make sure that the previously registered inactivity timer will not
1104 * remove the STA immediately. */
1105 sta->timeout_next = STA_NULLFUNC;
1106
1107 fail:
5586f500 1108 send_assoc_resp(hapd, sta, resp, reassoc, pos, left);
6fc6879b
JM		 1109}
1110
1111
6fc6879b 1112static void handle_disassoc(struct hostapd_data *hapd,
f8b1f695 1113 const struct ieee80211_mgmt *mgmt, size_t len)
6fc6879b
JM		 1114{
1115 struct sta_info *sta;
1116
1117 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) {
1118 printf("handle_disassoc - too short payload (len=%lu)\n",
1119 (unsigned long) len);
1120 return;
1121 }
1122
1123 wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d",
1124 MAC2STR(mgmt->sa),
1125 le_to_host16(mgmt->u.disassoc.reason_code));
1126
6fc6879b
JM		 1127 sta = ap_get_sta(hapd, mgmt->sa);
1128 if (sta == NULL) {
1129 printf("Station " MACSTR " trying to disassociate, but it "
1130 "is not associated.\n", MAC2STR(mgmt->sa));
1131 return;
1132 }
1133
ae055af4 1134 ap_sta_set_authorized(hapd, sta, 0);
b8281964 1135 sta->flags &= ~(WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK);
6fc6879b
JM		 1136 wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
1137 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1138 HOSTAPD_LEVEL_INFO, "disassociated");
1139 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1140 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1141 /* Stop Accounting and IEEE 802.1X sessions, but leave the STA
1142 * authenticated. */
1143 accounting_sta_stop(hapd, sta);
1144 ieee802_1x_free_station(sta);
51e2a27a 1145 hostapd_drv_sta_remove(hapd, sta->addr);
6fc6879b
JM		 1146
1147 if (sta->timeout_next == STA_NULLFUNC ||
1148 sta->timeout_next == STA_DISASSOC) {
1149 sta->timeout_next = STA_DEAUTH;
1150 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1151 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
1152 hapd, sta);
1153 }
1154
1155 mlme_disassociate_indication(
1156 hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code));
1157}
1158
1159
1160static void handle_deauth(struct hostapd_data *hapd,
f8b1f695 1161 const struct ieee80211_mgmt *mgmt, size_t len)
6fc6879b
JM		 1162{
1163 struct sta_info *sta;
1164
1165 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) {
3ec1e902
JM		 1166 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "handle_deauth - too short "
1167 "payload (len=%lu)", (unsigned long) len);
6fc6879b
JM		 1168 return;
1169 }
1170
3ec1e902 1171 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "deauthentication: STA=" MACSTR
24d75245
BG		 1172 " reason_code=%d",
1173 MAC2STR(mgmt->sa), le_to_host16(mgmt->u.deauth.reason_code));
6fc6879b 1174
6fc6879b
JM		 1175 sta = ap_get_sta(hapd, mgmt->sa);
1176 if (sta == NULL) {
3ec1e902
JM		 1177 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR " trying "
1178 "to deauthenticate, but it is not authenticated",
24d75245 1179 MAC2STR(mgmt->sa));
6fc6879b
JM		 1180 return;
1181 }
1182
ae055af4 1183 ap_sta_set_authorized(hapd, sta, 0);
b8281964
JM		 1184 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC |
1185 WLAN_STA_ASSOC_REQ_OK);
6fc6879b
JM		 1186 wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
1187 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1188 HOSTAPD_LEVEL_DEBUG, "deauthenticated");
1189 mlme_deauthenticate_indication(
1190 hapd, sta, le_to_host16(mgmt->u.deauth.reason_code));
1191 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1192 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1193 ap_free_sta(hapd, sta);
1194}
1195
1196
1197static void handle_beacon(struct hostapd_data *hapd,
b57e086c 1198 const struct ieee80211_mgmt *mgmt, size_t len,
6fc6879b
JM		 1199 struct hostapd_frame_info *fi)
1200{
1201 struct ieee802_11_elems elems;
1202
1203 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) {
1204 printf("handle_beacon - too short payload (len=%lu)\n",
1205 (unsigned long) len);
1206 return;
1207 }
1208
3d536eb4 1209 (void) ieee802_11_parse_elems(mgmt->u.beacon.variable,
6fc6879b
JM		 1210 len - (IEEE80211_HDRLEN +
1211 sizeof(mgmt->u.beacon)), &elems,
1212 0);
1213
6fc6879b
JM		 1214 ap_list_process_beacon(hapd->iface, mgmt, &elems, fi);
1215}
1216
1217
5d22a1d5 1218#ifdef CONFIG_IEEE80211W
88b4b424 1219
93b76319 1220static void hostapd_sa_query_action(struct hostapd_data *hapd,
b57e086c
JM		 1221 const struct ieee80211_mgmt *mgmt,
1222 size_t len)
5d22a1d5 1223{
b57e086c 1224 const u8 *end;
5d22a1d5 1225
93b76319
JM		 1226 end = mgmt->u.action.u.sa_query_resp.trans_id +
1227 WLAN_SA_QUERY_TR_ID_LEN;
5d22a1d5 1228 if (((u8 *) mgmt) + len < end) {
93b76319 1229 wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short SA Query Action "
5d22a1d5
JM		 1230 "frame (len=%lu)", (unsigned long) len);
1231 return;
1232 }
1233
d4370eac
MP		 1234 ieee802_11_sa_query_action(hapd, mgmt->sa,
1235 mgmt->u.action.u.sa_query_resp.action,
1236 mgmt->u.action.u.sa_query_resp.trans_id);
5d22a1d5 1237}
5d22a1d5
JM		 1238
1239
c4e281fd
JM		 1240static int robust_action_frame(u8 category)
1241{
1242 return category != WLAN_ACTION_PUBLIC &&
1243 category != WLAN_ACTION_HT;
1244}
9f64b827 1245#endif /* CONFIG_IEEE80211W */
c4e281fd
JM		 1246
1247
6fc6879b 1248static void handle_action(struct hostapd_data *hapd,
b57e086c 1249 const struct ieee80211_mgmt *mgmt, size_t len)
6fc6879b 1250{
46eeedac 1251#if defined(CONFIG_IEEE80211W) || defined(CONFIG_IEEE80211R)
c4e281fd 1252 struct sta_info *sta;
46eeedac
JM		 1253 sta = ap_get_sta(hapd, mgmt->sa);
1254#endif /* CONFIG_IEEE80211W || CONFIG_IEEE80211R */
c4e281fd 1255
6fc6879b
JM		 1256 if (len < IEEE80211_HDRLEN + 1) {
1257 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1258 HOSTAPD_LEVEL_DEBUG,
1259 "handle_action - too short payload (len=%lu)",
1260 (unsigned long) len);
1261 return;
1262 }
1263
c4e281fd
JM		 1264#ifdef CONFIG_IEEE80211W
1265 if (sta && (sta->flags & WLAN_STA_MFP) &&
1266 !(mgmt->frame_control & host_to_le16(WLAN_FC_ISWEP) &&
1267 robust_action_frame(mgmt->u.action.category))) {
1268 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1269 HOSTAPD_LEVEL_DEBUG,
1270 "Dropped unprotected Robust Action frame from "
1271 "an MFP STA");
1272 return;
1273 }
1274#endif /* CONFIG_IEEE80211W */
1275
6fc6879b
JM		 1276 switch (mgmt->u.action.category) {
1277#ifdef CONFIG_IEEE80211R
1278 case WLAN_ACTION_FT:
1279 {
6fc6879b
JM		 1280 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
1281 wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored FT Action "
1282 "frame from unassociated STA " MACSTR,
1283 MAC2STR(mgmt->sa));
1284 return;
1285 }
1286
1287 if (wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action,
1288 len - IEEE80211_HDRLEN))
1289 break;
1290
1291 return;
1292 }
1293#endif /* CONFIG_IEEE80211R */
c2a71408 1294 case WLAN_ACTION_WMM:
3ae0800c 1295 hostapd_wmm_action(hapd, mgmt, len);
6fc6879b 1296 return;
5d22a1d5 1297#ifdef CONFIG_IEEE80211W
93b76319
JM		 1298 case WLAN_ACTION_SA_QUERY:
1299 hostapd_sa_query_action(hapd, mgmt, len);
5d22a1d5
JM		 1300 return;
1301#endif /* CONFIG_IEEE80211W */
c706d5aa
JM		 1302 case WLAN_ACTION_PUBLIC:
1303 if (hapd->public_action_cb) {
1304 hapd->public_action_cb(hapd->public_action_cb_ctx,
1305 (u8 *) mgmt, len,
1306 hapd->iface->freq);
1307 return;
1308 }
1309 break;
e44f8bf2
JM		 1310 case WLAN_ACTION_VENDOR_SPECIFIC:
1311 if (hapd->vendor_action_cb) {
1312 if (hapd->vendor_action_cb(hapd->vendor_action_cb_ctx,
1313 (u8 *) mgmt, len,
1314 hapd->iface->freq) == 0)
1315 return;
1316 }
1317 break;
6fc6879b
JM		 1318 }
1319
1320 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1321 HOSTAPD_LEVEL_DEBUG,
1322 "handle_action - unknown action category %d or invalid "
1323 "frame",
1324 mgmt->u.action.category);
1325 if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) &&
1326 !(mgmt->sa[0] & 0x01)) {
b57e086c
JM		 1327 struct ieee80211_mgmt *resp;
1328
6fc6879b
JM		 1329 /*
1330 * IEEE 802.11-REVma/D9.0 - 7.3.1.11
1331 * Return the Action frame to the source without change
1332 * except that MSB of the Category set to 1.
1333 */
1334 wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action "
1335 "frame back to sender");
b57e086c
JM		 1336 resp = os_malloc(len);
1337 if (resp == NULL)
1338 return;
1339 os_memcpy(resp, mgmt, len);
1340 os_memcpy(resp->da, resp->sa, ETH_ALEN);
1341 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
1342 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
1343 resp->u.action.category |= 0x80;
1344
8cfa3527 1345 hostapd_drv_send_mlme(hapd, resp, len, 0);
b57e086c 1346 os_free(resp);
6fc6879b
JM		 1347 }
1348}
1349
1350
1351/**
1352 * ieee802_11_mgmt - process incoming IEEE 802.11 management frames
1353 * @hapd: hostapd BSS data structure (the BSS to which the management frame was
1354 * sent to)
1355 * @buf: management frame data (starting from IEEE 802.11 header)
1356 * @len: length of frame data in octets
a17df5fb 1357 * @fi: meta data about received frame (signal level, etc.)
6fc6879b
JM		 1358 *
1359 * Process all incoming IEEE 802.11 management frames. This will be called for
1360 * each frame received from the kernel driver through wlan#ap interface. In
1361 * addition, it can be called to re-inserted pending frames (e.g., when using
1362 * external RADIUS server as an MAC ACL).
1363 */
b57e086c 1364void ieee802_11_mgmt(struct hostapd_data *hapd, const u8 *buf, size_t len,
6fc6879b
JM		 1365 struct hostapd_frame_info *fi)
1366{
f8b1f695 1367 struct ieee80211_mgmt *mgmt;
6fc6879b 1368 int broadcast;
f8b1f695
JM		 1369 u16 fc, stype;
1370
cbcf92b4
JM		 1371 if (len < 24)
1372 return;
1373
f8b1f695
JM		 1374 mgmt = (struct ieee80211_mgmt *) buf;
1375 fc = le_to_host16(mgmt->frame_control);
1376 stype = WLAN_FC_GET_STYPE(fc);
6fc6879b
JM		 1377
1378 if (stype == WLAN_FC_STYPE_BEACON) {
1379 handle_beacon(hapd, mgmt, len, fi);
1380 return;
1381 }
1382
6fc6879b
JM		 1383 broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff &&
1384 mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff &&
1385 mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff;
1386
1387 if (!broadcast &&
3eeee931
AN		 1388#ifdef CONFIG_P2P
1389 /* Invitation responses can be sent with the peer MAC as BSSID */
1390 !((hapd->conf->p2p & P2P_GROUP_OWNER) &&
1391 stype == WLAN_FC_STYPE_ACTION) &&
1392#endif /* CONFIG_P2P */
fe2c5241 1393 os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) {
6fc6879b
JM		 1394 printf("MGMT: BSSID=" MACSTR " not our address\n",
1395 MAC2STR(mgmt->bssid));
1396 return;
1397 }
1398
1399
1400 if (stype == WLAN_FC_STYPE_PROBE_REQ) {
1401 handle_probe_req(hapd, mgmt, len);
1402 return;
1403 }
1404
1405 if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) {
1406 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1407 HOSTAPD_LEVEL_DEBUG,
1408 "MGMT: DA=" MACSTR " not our address",
1409 MAC2STR(mgmt->da));
1410 return;
1411 }
1412
1413 switch (stype) {
1414 case WLAN_FC_STYPE_AUTH:
1415 wpa_printf(MSG_DEBUG, "mgmt::auth");
1416 handle_auth(hapd, mgmt, len);
1417 break;
1418 case WLAN_FC_STYPE_ASSOC_REQ:
1419 wpa_printf(MSG_DEBUG, "mgmt::assoc_req");
1420 handle_assoc(hapd, mgmt, len, 0);
1421 break;
6fc6879b
JM		 1422 case WLAN_FC_STYPE_REASSOC_REQ:
1423 wpa_printf(MSG_DEBUG, "mgmt::reassoc_req");
1424 handle_assoc(hapd, mgmt, len, 1);
1425 break;
1426 case WLAN_FC_STYPE_DISASSOC:
1427 wpa_printf(MSG_DEBUG, "mgmt::disassoc");
1428 handle_disassoc(hapd, mgmt, len);
1429 break;
1430 case WLAN_FC_STYPE_DEAUTH:
3ec1e902 1431 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "mgmt::deauth");
6fc6879b
JM		 1432 handle_deauth(hapd, mgmt, len);
1433 break;
1434 case WLAN_FC_STYPE_ACTION:
1435 wpa_printf(MSG_DEBUG, "mgmt::action");
1436 handle_action(hapd, mgmt, len);
1437 break;
1438 default:
1439 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1440 HOSTAPD_LEVEL_DEBUG,
1441 "unknown mgmt frame subtype %d", stype);
1442 break;
1443 }
1444}
1445
1446
1447static void handle_auth_cb(struct hostapd_data *hapd,
f8b1f695 1448 const struct ieee80211_mgmt *mgmt,
6fc6879b
JM		 1449 size_t len, int ok)
1450{
1451 u16 auth_alg, auth_transaction, status_code;
1452 struct sta_info *sta;
1453
1454 if (!ok) {
1455 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1456 HOSTAPD_LEVEL_NOTICE,
1457 "did not acknowledge authentication response");
1458 return;
1459 }
1460
1461 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
1462 printf("handle_auth_cb - too short payload (len=%lu)\n",
1463 (unsigned long) len);
1464 return;
1465 }
1466
1467 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
1468 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
1469 status_code = le_to_host16(mgmt->u.auth.status_code);
1470
1471 sta = ap_get_sta(hapd, mgmt->da);
1472 if (!sta) {
1473 printf("handle_auth_cb: STA " MACSTR " not found\n",
1474 MAC2STR(mgmt->da));
1475 return;
1476 }
1477
1478 if (status_code == WLAN_STATUS_SUCCESS &&
1479 ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
1480 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
1481 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1482 HOSTAPD_LEVEL_INFO, "authenticated");
1483 sta->flags |= WLAN_STA_AUTH;
1484 }
1485}
1486
1487
1488static void handle_assoc_cb(struct hostapd_data *hapd,
f8b1f695 1489 const struct ieee80211_mgmt *mgmt,
6fc6879b
JM		 1490 size_t len, int reassoc, int ok)
1491{
1492 u16 status;
1493 struct sta_info *sta;
1494 int new_assoc = 1;
fc4e2d95 1495 struct ieee80211_ht_capabilities ht_cap;
6fc6879b
JM		 1496
1497 if (!ok) {
1498 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1499 HOSTAPD_LEVEL_DEBUG,
1500 "did not acknowledge association response");
1501 return;
1502 }
1503
1504 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) :
1505 sizeof(mgmt->u.assoc_resp))) {
1506 printf("handle_assoc_cb(reassoc=%d) - too short payload "
1507 "(len=%lu)\n", reassoc, (unsigned long) len);
1508 return;
1509 }
1510
1511 if (reassoc)
1512 status = le_to_host16(mgmt->u.reassoc_resp.status_code);
1513 else
1514 status = le_to_host16(mgmt->u.assoc_resp.status_code);
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 (status != WLAN_STATUS_SUCCESS)
1524 goto fail;
1525
1526 /* Stop previous accounting session, if one is started, and allocate
1527 * new session id for the new session. */
1528 accounting_sta_stop(hapd, sta);
6fc6879b
JM		 1529
1530 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1531 HOSTAPD_LEVEL_INFO,
2fc98d02
JM		 1532 "associated (aid %d)",
1533 sta->aid);
6fc6879b
JM		 1534
1535 if (sta->flags & WLAN_STA_ASSOC)
1536 new_assoc = 0;
1537 sta->flags |= WLAN_STA_ASSOC;
ef580012
JM		 1538 if ((!hapd->conf->ieee802_1x && !hapd->conf->wpa) ||
1539 sta->auth_alg == WLAN_AUTH_FT) {
1540 /*
1541 * Open, static WEP, or FT protocol; no separate authorization
1542 * step.
1543 */
6905dcb1 1544 ap_sta_set_authorized(hapd, sta, 1);
515cf93f 1545 }
6fc6879b
JM		 1546
1547 if (reassoc)
1548 mlme_reassociate_indication(hapd, sta);
1549 else
1550 mlme_associate_indication(hapd, sta);
1551
5d22a1d5 1552#ifdef CONFIG_IEEE80211W
93b76319 1553 sta->sa_query_timed_out = 0;
5d22a1d5
JM		 1554#endif /* CONFIG_IEEE80211W */
1555
c140a228
JM		 1556 /*
1557 * Remove the STA entry in order to make sure the STA PS state gets
1558 * cleared and configuration gets updated in case of reassociation back
1559 * to the same AP.
1560 */
51e2a27a 1561 hostapd_drv_sta_remove(hapd, sta->addr);
c140a228 1562
d45354be
JM		 1563#ifdef CONFIG_IEEE80211N
1564 if (sta->flags & WLAN_STA_HT)
1565 hostapd_get_ht_capab(hapd, sta->ht_capabilities, &ht_cap);
1566#endif /* CONFIG_IEEE80211N */
1567
0e8a96a9
JM		 1568 if (hostapd_sta_add(hapd, sta->addr, sta->aid, sta->capability,
1569 sta->supported_rates, sta->supported_rates_len,
1570 sta->listen_interval,
d83ab1fe 1571 sta->flags & WLAN_STA_HT ? &ht_cap : NULL,
5d061637 1572 sta->flags, sta->qosinfo)) {
6fc6879b
JM		 1573 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1574 HOSTAPD_LEVEL_NOTICE,
1575 "Could not add STA to kernel driver");
8666585b
YAP		 1576
1577 ap_sta_disconnect(hapd, sta, sta->addr,
1578 WLAN_REASON_DISASSOC_AP_BUSY);
1579
1580 goto fail;
6fc6879b
JM		 1581 }
1582
7826ceae 1583 if (sta->flags & WLAN_STA_WDS)
0e8a96a9 1584 hostapd_set_wds_sta(hapd, sta->addr, sta->aid, 1);
7826ceae 1585
6fc6879b
JM		 1586 if (sta->eapol_sm == NULL) {
1587 /*
1588 * This STA does not use RADIUS server for EAP authentication,
1589 * so bind it to the selected VLAN interface now, since the
1590 * interface selection is not going to change anymore.
1591 */
4254100d
JM		 1592 if (ap_sta_bind_vlan(hapd, sta, 0) < 0)
1593 goto fail;
6fc6879b
JM		 1594 } else if (sta->vlan_id) {
1595 /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */
4254100d
JM		 1596 if (ap_sta_bind_vlan(hapd, sta, 0) < 0)
1597 goto fail;
6fc6879b 1598 }
eddd8010 1599
0e8a96a9 1600 hostapd_set_sta_flags(hapd, sta);
6fc6879b
JM		 1601
1602 if (sta->auth_alg == WLAN_AUTH_FT)
1603 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
1604 else
1605 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
d24df7c3 1606 hapd->new_assoc_sta_cb(hapd, sta, !new_assoc);
6fc6879b
JM		 1607
1608 ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
1609
1610 fail:
1611 /* Copy of the association request is not needed anymore */
1612 if (sta->last_assoc_req) {
1613 os_free(sta->last_assoc_req);
1614 sta->last_assoc_req = NULL;
1615 }
1616}
1617
1618
4dc03726
JM		 1619static void handle_deauth_cb(struct hostapd_data *hapd,
1620 const struct ieee80211_mgmt *mgmt,
1621 size_t len, int ok)
1622{
1623 struct sta_info *sta;
1624 if (mgmt->da[0] & 0x01)
1625 return;
1626 sta = ap_get_sta(hapd, mgmt->da);
1627 if (!sta) {
1628 wpa_printf(MSG_DEBUG, "handle_deauth_cb: STA " MACSTR
1629 " not found", MAC2STR(mgmt->da));
1630 return;
1631 }
1632 if (ok)
1633 wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged deauth",
1634 MAC2STR(sta->addr));
1635 else
1636 wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge "
1637 "deauth", MAC2STR(sta->addr));
1638
1639 ap_sta_deauth_cb(hapd, sta);
1640}
1641
1642
1643static void handle_disassoc_cb(struct hostapd_data *hapd,
1644 const struct ieee80211_mgmt *mgmt,
1645 size_t len, int ok)
1646{
1647 struct sta_info *sta;
1648 if (mgmt->da[0] & 0x01)
1649 return;
1650 sta = ap_get_sta(hapd, mgmt->da);
1651 if (!sta) {
1652 wpa_printf(MSG_DEBUG, "handle_disassoc_cb: STA " MACSTR
1653 " not found", MAC2STR(mgmt->da));
1654 return;
1655 }
1656 if (ok)
1657 wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged disassoc",
1658 MAC2STR(sta->addr));
1659 else
1660 wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge "
1661 "disassoc", MAC2STR(sta->addr));
1662
1663 ap_sta_disassoc_cb(hapd, sta);
1664}
1665
1666
1c6e69cc
JM		 1667/**
1668 * ieee802_11_mgmt_cb - Process management frame TX status callback
1669 * @hapd: hostapd BSS data structure (the BSS from which the management frame
1670 * was sent from)
1671 * @buf: management frame data (starting from IEEE 802.11 header)
1672 * @len: length of frame data in octets
1673 * @stype: management frame subtype from frame control field
1674 * @ok: Whether the frame was ACK'ed
1675 */
f8b1f695 1676void ieee802_11_mgmt_cb(struct hostapd_data *hapd, const u8 *buf, size_t len,
6fc6879b
JM		 1677 u16 stype, int ok)
1678{
f8b1f695
JM		 1679 const struct ieee80211_mgmt *mgmt;
1680 mgmt = (const struct ieee80211_mgmt *) buf;
6fc6879b
JM		 1681
1682 switch (stype) {
1683 case WLAN_FC_STYPE_AUTH:
1684 wpa_printf(MSG_DEBUG, "mgmt::auth cb");
1685 handle_auth_cb(hapd, mgmt, len, ok);
1686 break;
1687 case WLAN_FC_STYPE_ASSOC_RESP:
1688 wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb");
1689 handle_assoc_cb(hapd, mgmt, len, 0, ok);
1690 break;
1691 case WLAN_FC_STYPE_REASSOC_RESP:
1692 wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb");
1693 handle_assoc_cb(hapd, mgmt, len, 1, ok);
1694 break;
1695 case WLAN_FC_STYPE_PROBE_RESP:
2d8bf732 1696 wpa_printf(MSG_EXCESSIVE, "mgmt::proberesp cb");
6fc6879b
JM		 1697 break;
1698 case WLAN_FC_STYPE_DEAUTH:
4dc03726
JM		 1699 wpa_printf(MSG_DEBUG, "mgmt::deauth cb");
1700 handle_deauth_cb(hapd, mgmt, len, ok);
1701 break;
1702 case WLAN_FC_STYPE_DISASSOC:
1703 wpa_printf(MSG_DEBUG, "mgmt::disassoc cb");
1704 handle_disassoc_cb(hapd, mgmt, len, ok);
6fc6879b 1705 break;
5d22a1d5
JM		 1706 case WLAN_FC_STYPE_ACTION:
1707 wpa_printf(MSG_DEBUG, "mgmt::action cb");
1708 break;
6fc6879b
JM		 1709 default:
1710 printf("unknown mgmt cb frame subtype %d\n", stype);
1711 break;
1712 }
1713}
1714
1715
6fc6879b
JM		 1716int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
1717{
1718 /* TODO */
1719 return 0;
1720}
1721
1722
1723int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
1724 char *buf, size_t buflen)
1725{
1726 /* TODO */
1727 return 0;
1728}
1729
f8b1f695
JM		 1730
1731void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr,
1732 const u8 *buf, size_t len, int ack)
1733{
1734 struct sta_info *sta;
1735 struct hostapd_iface *iface = hapd->iface;
1736
1737 sta = ap_get_sta(hapd, addr);
1738 if (sta == NULL && iface->num_bss > 1) {
1739 size_t j;
1740 for (j = 0; j < iface->num_bss; j++) {
1741 hapd = iface->bss[j];
1742 sta = ap_get_sta(hapd, addr);
1743 if (sta)
1744 break;
1745 }
1746 }
1747 if (sta == NULL)
1748 return;
1749 if (sta->flags & WLAN_STA_PENDING_POLL) {
1750 wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
1751 "activity poll", MAC2STR(sta->addr),
1752 ack ? "ACKed" : "did not ACK");
1753 if (ack)
1754 sta->flags &= ~WLAN_STA_PENDING_POLL;
1755 }
1756
1757 ieee802_1x_tx_status(hapd, sta, buf, len, ack);
1758}
1759
1760
dd840f79
JB		 1761void hostapd_eapol_tx_status(struct hostapd_data *hapd, const u8 *dst,
1762 const u8 *data, size_t len, int ack)
1763{
1764 struct sta_info *sta;
1765 struct hostapd_iface *iface = hapd->iface;
1766
1767 sta = ap_get_sta(hapd, dst);
1768 if (sta == NULL && iface->num_bss > 1) {
1769 size_t j;
1770 for (j = 0; j < iface->num_bss; j++) {
1771 hapd = iface->bss[j];
1772 sta = ap_get_sta(hapd, dst);
1773 if (sta)
1774 break;
1775 }
1776 }
1777 if (sta == NULL)
1778 return;
1779
1780 ieee802_1x_eapol_tx_status(hapd, sta, data, len, ack);
1781}
1782
1783
bcf24348
JB		 1784void hostapd_client_poll_ok(struct hostapd_data *hapd, const u8 *addr)
1785{
1786 struct sta_info *sta;
1787 struct hostapd_iface *iface = hapd->iface;
1788
1789 sta = ap_get_sta(hapd, addr);
1790 if (sta == NULL && iface->num_bss > 1) {
1791 size_t j;
1792 for (j = 0; j < iface->num_bss; j++) {
1793 hapd = iface->bss[j];
1794 sta = ap_get_sta(hapd, addr);
1795 if (sta)
1796 break;
1797 }
1798 }
1799 if (sta == NULL)
1800 return;
1801 if (!(sta->flags & WLAN_STA_PENDING_POLL))
1802 return;
1803
1804 wpa_printf(MSG_DEBUG, "STA " MACSTR " ACKed pending "
1805 "activity poll", MAC2STR(sta->addr));
1806 sta->flags &= ~WLAN_STA_PENDING_POLL;
1807}
1808
1809
fbbfcbac
FF		 1810void ieee802_11_rx_from_unknown(struct hostapd_data *hapd, const u8 *src,
1811 int wds)
f8b1f695
JM		 1812{
1813 struct sta_info *sta;
1814
1815 sta = ap_get_sta(hapd, src);
fbbfcbac
FF		 1816 if (sta && (sta->flags & WLAN_STA_ASSOC)) {
1817 if (wds && !(sta->flags & WLAN_STA_WDS)) {
1818 wpa_printf(MSG_DEBUG, "Enable 4-address WDS mode for "
1819 "STA " MACSTR " (aid %u)",
1820 MAC2STR(sta->addr), sta->aid);
1821 sta->flags |= WLAN_STA_WDS;
0e8a96a9 1822 hostapd_set_wds_sta(hapd, sta->addr, sta->aid, 1);
fbbfcbac 1823 }
f8b1f695 1824 return;
fbbfcbac 1825 }
f8b1f695
JM		 1826
1827 wpa_printf(MSG_DEBUG, "Data/PS-poll frame from not associated STA "
1828 MACSTR, MAC2STR(src));
1df492df
JM		 1829 if (src[0] & 0x01) {
1830 /* Broadcast bit set in SA?! Ignore the frame silently. */
1831 return;
1832 }
1833
b8281964
JM		 1834 if (sta && (sta->flags & WLAN_STA_ASSOC_REQ_OK)) {
1835 wpa_printf(MSG_DEBUG, "Association Response to the STA has "
1836 "already been sent, but no TX status yet known - "
1837 "ignore Class 3 frame issue with " MACSTR,
1838 MAC2STR(src));
1839 return;
1840 }
1841
f8b1f695 1842 if (sta && (sta->flags & WLAN_STA_AUTH))
51e2a27a 1843 hostapd_drv_sta_disassoc(
f8b1f695
JM		 1844 hapd, src,
1845 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1846 else
51e2a27a 1847 hostapd_drv_sta_deauth(
f8b1f695
JM		 1848 hapd, src,
1849 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1850}
1851
1852
6fc6879b 1853#endif /* CONFIG_NATIVE_WINDOWS */
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