Added preliminary Wi-Fi Protected Setup (WPS) implementation
[wpasupplicant] / hostapd / ieee802_11.c
1 /*
2  * hostapd / IEEE 802.11 Management
3  * Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi>
4  * Copyright (c) 2007-2008, Intel Corporation
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation.
9  *
10  * Alternatively, this software may be distributed under the terms of BSD
11  * license.
12  *
13  * See README and COPYING for more details.
14  */
15
16 #include "includes.h"
17
18 #ifndef CONFIG_NATIVE_WINDOWS
19
20 #include <net/if.h>
21
22 #include "eloop.h"
23 #include "hostapd.h"
24 #include "ieee802_11.h"
25 #include "beacon.h"
26 #include "hw_features.h"
27 #include "radius/radius.h"
28 #include "radius/radius_client.h"
29 #include "ieee802_11_auth.h"
30 #include "sta_info.h"
31 #include "rc4.h"
32 #include "ieee802_1x.h"
33 #include "wpa.h"
34 #include "wme.h"
35 #include "ap_list.h"
36 #include "accounting.h"
37 #include "driver.h"
38 #include "mlme.h"
39
40
41 u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid)
42 {
43         u8 *pos = eid;
44         int i, num, count;
45
46         if (hapd->iface->current_rates == NULL)
47                 return eid;
48
49         *pos++ = WLAN_EID_SUPP_RATES;
50         num = hapd->iface->num_rates;
51         if (num > 8) {
52                 /* rest of the rates are encoded in Extended supported
53                  * rates element */
54                 num = 8;
55         }
56
57         *pos++ = num;
58         count = 0;
59         for (i = 0, count = 0; i < hapd->iface->num_rates && count < num;
60              i++) {
61                 count++;
62                 *pos = hapd->iface->current_rates[i].rate / 5;
63                 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
64                         *pos |= 0x80;
65                 pos++;
66         }
67
68         return pos;
69 }
70
71
72 u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid)
73 {
74         u8 *pos = eid;
75         int i, num, count;
76
77         if (hapd->iface->current_rates == NULL)
78                 return eid;
79
80         num = hapd->iface->num_rates;
81         if (num <= 8)
82                 return eid;
83         num -= 8;
84
85         *pos++ = WLAN_EID_EXT_SUPP_RATES;
86         *pos++ = num;
87         count = 0;
88         for (i = 0, count = 0; i < hapd->iface->num_rates && count < num + 8;
89              i++) {
90                 count++;
91                 if (count <= 8)
92                         continue; /* already in SuppRates IE */
93                 *pos = hapd->iface->current_rates[i].rate / 5;
94                 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
95                         *pos |= 0x80;
96                 pos++;
97         }
98
99         return pos;
100 }
101
102
103 u8 * hostapd_eid_ht_capabilities_info(struct hostapd_data *hapd, u8 *eid)
104 {
105 #ifdef CONFIG_IEEE80211N
106         struct ieee80211_ht_capability *cap;
107         u8 *pos = eid;
108
109         if (!hapd->iconf->ieee80211n)
110                 return eid;
111
112         *pos++ = WLAN_EID_HT_CAP;
113         *pos++ = sizeof(*cap);
114
115         cap = (struct ieee80211_ht_capability *) pos;
116         os_memset(cap, 0, sizeof(*cap));
117         SET_2BIT_U8(&cap->mac_ht_params_info,
118                     MAC_HT_PARAM_INFO_MAX_RX_AMPDU_FACTOR_OFFSET,
119                     MAX_RX_AMPDU_FACTOR_64KB);
120
121         cap->capabilities_info = host_to_le16(hapd->iconf->ht_capab);
122
123         cap->supported_mcs_set[0] = 0xff;
124         cap->supported_mcs_set[1] = 0xff;
125
126         pos += sizeof(*cap);
127
128         return pos;
129 #else /* CONFIG_IEEE80211N */
130         return eid;
131 #endif /* CONFIG_IEEE80211N */
132 }
133
134
135 u8 * hostapd_eid_ht_operation(struct hostapd_data *hapd, u8 *eid)
136 {
137 #ifdef CONFIG_IEEE80211N
138         struct ieee80211_ht_operation *oper;
139         u8 *pos = eid;
140
141         if (!hapd->iconf->ieee80211n)
142                 return eid;
143
144         *pos++ = WLAN_EID_HT_OPERATION;
145         *pos++ = sizeof(*oper);
146
147         oper = (struct ieee80211_ht_operation *) pos;
148         os_memset(oper, 0, sizeof(*oper));
149
150         oper->operation_mode = host_to_le16(hapd->iface->ht_op_mode);
151
152         pos += sizeof(*oper);
153
154         return pos;
155 #else /* CONFIG_IEEE80211N */
156         return eid;
157 #endif /* CONFIG_IEEE80211N */
158 }
159
160
161 #ifdef CONFIG_IEEE80211N
162
163 /*
164 op_mode
165 Set to 0 (HT pure) under the followign conditions
166         - all STAs in the BSS are 20/40 MHz HT in 20/40 MHz BSS or
167         - all STAs in the BSS are 20 MHz HT in 20 MHz BSS
168 Set to 1 (HT non-member protection) if there may be non-HT STAs
169         in both the primary and the secondary channel
170 Set to 2 if only HT STAs are associated in BSS,
171         however and at least one 20 MHz HT STA is associated
172 Set to 3 (HT mixed mode) when one or more non-HT STAs are associated
173         (currently non-GF HT station is considered as non-HT STA also)
174 */
175 int hostapd_ht_operation_update(struct hostapd_iface *iface)
176 {
177         u16 cur_op_mode, new_op_mode;
178         int op_mode_changes = 0;
179
180         if (!iface->conf->ieee80211n || iface->conf->ht_op_mode_fixed)
181                 return 0;
182
183         wpa_printf(MSG_DEBUG, "%s current operation mode=0x%X",
184                    __func__, iface->ht_op_mode);
185
186         if (!(iface->ht_op_mode & HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT)
187             && iface->num_sta_ht_no_gf) {
188                 iface->ht_op_mode |=
189                         HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT;
190                 op_mode_changes++;
191         } else if ((iface->ht_op_mode &
192                     HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT) &&
193                    iface->num_sta_ht_no_gf == 0) {
194                 iface->ht_op_mode &=
195                         ~HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT;
196                 op_mode_changes++;
197         }
198
199         if (!(iface->ht_op_mode & HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT) &&
200             (iface->num_sta_no_ht || iface->olbc_ht)) {
201                 iface->ht_op_mode |= HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT;
202                 op_mode_changes++;
203         } else if ((iface->ht_op_mode &
204                     HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT) &&
205                    (iface->num_sta_no_ht == 0 && !iface->olbc_ht)) {
206                 iface->ht_op_mode &=
207                         ~HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT;
208                 op_mode_changes++;
209         }
210
211         /* Note: currently we switch to the MIXED op mode if HT non-greenfield
212          * station is associated. Probably it's a theoretical case, since
213          * it looks like all known HT STAs support greenfield.
214          */
215         new_op_mode = 0;
216         if (iface->num_sta_no_ht ||
217             (iface->ht_op_mode & HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT))
218                 new_op_mode = OP_MODE_MIXED;
219         else if ((iface->conf->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)
220                  && iface->num_sta_ht_20mhz)
221                 new_op_mode = OP_MODE_20MHZ_HT_STA_ASSOCED;
222         else if (iface->olbc_ht)
223                 new_op_mode = OP_MODE_MAY_BE_LEGACY_STAS;
224         else
225                 new_op_mode = OP_MODE_PURE;
226
227         cur_op_mode = iface->ht_op_mode & HT_INFO_OPERATION_MODE_OP_MODE_MASK;
228         if (cur_op_mode != new_op_mode) {
229                 iface->ht_op_mode &= ~HT_INFO_OPERATION_MODE_OP_MODE_MASK;
230                 iface->ht_op_mode |= new_op_mode;
231                 op_mode_changes++;
232         }
233
234         wpa_printf(MSG_DEBUG, "%s new operation mode=0x%X changes=%d",
235                    __func__, iface->ht_op_mode, op_mode_changes);
236
237         return op_mode_changes;
238 }
239
240 #endif /* CONFIG_IEEE80211N */
241
242
243 u16 hostapd_own_capab_info(struct hostapd_data *hapd, struct sta_info *sta,
244                            int probe)
245 {
246         int capab = WLAN_CAPABILITY_ESS;
247         int privacy;
248
249         if (hapd->iface->num_sta_no_short_preamble == 0 &&
250             hapd->iconf->preamble == SHORT_PREAMBLE)
251                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
252
253         privacy = hapd->conf->ssid.wep.keys_set;
254
255         if (hapd->conf->ieee802_1x &&
256             (hapd->conf->default_wep_key_len ||
257              hapd->conf->individual_wep_key_len))
258                 privacy = 1;
259
260         if (hapd->conf->wpa)
261                 privacy = 1;
262
263         if (sta) {
264                 int policy, def_klen;
265                 if (probe && sta->ssid_probe) {
266                         policy = sta->ssid_probe->security_policy;
267                         def_klen = sta->ssid_probe->wep.default_len;
268                 } else {
269                         policy = sta->ssid->security_policy;
270                         def_klen = sta->ssid->wep.default_len;
271                 }
272                 privacy = policy != SECURITY_PLAINTEXT;
273                 if (policy == SECURITY_IEEE_802_1X && def_klen == 0)
274                         privacy = 0;
275         }
276
277         if (privacy)
278                 capab |= WLAN_CAPABILITY_PRIVACY;
279
280         if (hapd->iface->current_mode &&
281             hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G &&
282             hapd->iface->num_sta_no_short_slot_time == 0)
283                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
284
285         return capab;
286 }
287
288
289 #ifdef CONFIG_IEEE80211W
290 static u8 * hostapd_eid_assoc_comeback_time(struct hostapd_data *hapd,
291                                             struct sta_info *sta, u8 *eid)
292 {
293         u8 *pos = eid;
294         u32 timeout;
295
296         *pos++ = WLAN_EID_ASSOC_COMEBACK_TIME;
297         *pos++ = 4;
298         timeout = (hapd->conf->assoc_ping_attempts - sta->ping_count + 1) *
299                 hapd->conf->assoc_ping_timeout;
300         WPA_PUT_LE32(pos, timeout);
301         pos += 4;
302
303         return pos;
304 }
305 #endif /* CONFIG_IEEE80211W */
306
307
308 void ieee802_11_print_ssid(char *buf, const u8 *ssid, u8 len)
309 {
310         int i;
311         if (len > HOSTAPD_MAX_SSID_LEN)
312                 len = HOSTAPD_MAX_SSID_LEN;
313         for (i = 0; i < len; i++) {
314                 if (ssid[i] >= 32 && ssid[i] < 127)
315                         buf[i] = ssid[i];
316                 else
317                         buf[i] = '.';
318         }
319         buf[len] = '\0';
320 }
321
322
323 void ieee802_11_send_deauth(struct hostapd_data *hapd, u8 *addr, u16 reason)
324 {
325         struct ieee80211_mgmt mgmt;
326
327         hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
328                        HOSTAPD_LEVEL_DEBUG,
329                        "deauthenticate - reason %d", reason);
330         os_memset(&mgmt, 0, sizeof(mgmt));
331         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
332                                           WLAN_FC_STYPE_DEAUTH);
333         os_memcpy(mgmt.da, addr, ETH_ALEN);
334         os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
335         os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
336         mgmt.u.deauth.reason_code = host_to_le16(reason);
337         if (hostapd_send_mgmt_frame(hapd, &mgmt, IEEE80211_HDRLEN +
338                                     sizeof(mgmt.u.deauth), 0) < 0)
339                 perror("ieee802_11_send_deauth: send");
340 }
341
342
343 static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta,
344                            u16 auth_transaction, u8 *challenge, int iswep)
345 {
346         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
347                        HOSTAPD_LEVEL_DEBUG,
348                        "authentication (shared key, transaction %d)",
349                        auth_transaction);
350
351         if (auth_transaction == 1) {
352                 if (!sta->challenge) {
353                         /* Generate a pseudo-random challenge */
354                         u8 key[8];
355                         time_t now;
356                         int r;
357                         sta->challenge = os_zalloc(WLAN_AUTH_CHALLENGE_LEN);
358                         if (sta->challenge == NULL)
359                                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
360
361                         now = time(NULL);
362                         r = random();
363                         os_memcpy(key, &now, 4);
364                         os_memcpy(key + 4, &r, 4);
365                         rc4(sta->challenge, WLAN_AUTH_CHALLENGE_LEN,
366                             key, sizeof(key));
367                 }
368                 return 0;
369         }
370
371         if (auth_transaction != 3)
372                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
373
374         /* Transaction 3 */
375         if (!iswep || !sta->challenge || !challenge ||
376             os_memcmp(sta->challenge, challenge, WLAN_AUTH_CHALLENGE_LEN)) {
377                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
378                                HOSTAPD_LEVEL_INFO,
379                                "shared key authentication - invalid "
380                                "challenge-response");
381                 return WLAN_STATUS_CHALLENGE_FAIL;
382         }
383
384         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
385                        HOSTAPD_LEVEL_DEBUG,
386                        "authentication OK (shared key)");
387 #ifdef IEEE80211_REQUIRE_AUTH_ACK
388         /* Station will be marked authenticated if it ACKs the
389          * authentication reply. */
390 #else
391         sta->flags |= WLAN_STA_AUTH;
392         wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
393 #endif
394         os_free(sta->challenge);
395         sta->challenge = NULL;
396
397         return 0;
398 }
399
400
401 static void send_auth_reply(struct hostapd_data *hapd,
402                             const u8 *dst, const u8 *bssid,
403                             u16 auth_alg, u16 auth_transaction, u16 resp,
404                             const u8 *ies, size_t ies_len)
405 {
406         struct ieee80211_mgmt *reply;
407         u8 *buf;
408         size_t rlen;
409
410         rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth) + ies_len;
411         buf = os_zalloc(rlen);
412         if (buf == NULL)
413                 return;
414
415         reply = (struct ieee80211_mgmt *) buf;
416         reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
417                                             WLAN_FC_STYPE_AUTH);
418         os_memcpy(reply->da, dst, ETH_ALEN);
419         os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
420         os_memcpy(reply->bssid, bssid, ETH_ALEN);
421
422         reply->u.auth.auth_alg = host_to_le16(auth_alg);
423         reply->u.auth.auth_transaction = host_to_le16(auth_transaction);
424         reply->u.auth.status_code = host_to_le16(resp);
425
426         if (ies && ies_len)
427                 os_memcpy(reply->u.auth.variable, ies, ies_len);
428
429         wpa_printf(MSG_DEBUG, "authentication reply: STA=" MACSTR
430                    " auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu)",
431                    MAC2STR(dst), auth_alg, auth_transaction,
432                    resp, (unsigned long) ies_len);
433         if (hostapd_send_mgmt_frame(hapd, reply, rlen, 0) < 0)
434                 perror("send_auth_reply: send");
435
436         os_free(buf);
437 }
438
439
440 #ifdef CONFIG_IEEE80211R
441 static void handle_auth_ft_finish(void *ctx, const u8 *dst, const u8 *bssid,
442                                   u16 auth_transaction, u16 status,
443                                   const u8 *ies, size_t ies_len)
444 {
445         struct hostapd_data *hapd = ctx;
446         struct sta_info *sta;
447
448         send_auth_reply(hapd, dst, bssid, WLAN_AUTH_FT, auth_transaction,
449                         status, ies, ies_len);
450
451         if (status != WLAN_STATUS_SUCCESS)
452                 return;
453
454         sta = ap_get_sta(hapd, dst);
455         if (sta == NULL)
456                 return;
457
458         hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211,
459                        HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)");
460         sta->flags |= WLAN_STA_AUTH;
461         mlme_authenticate_indication(hapd, sta);
462 }
463 #endif /* CONFIG_IEEE80211R */
464
465
466 static void handle_auth(struct hostapd_data *hapd, struct ieee80211_mgmt *mgmt,
467                         size_t len)
468 {
469         u16 auth_alg, auth_transaction, status_code;
470         u16 resp = WLAN_STATUS_SUCCESS;
471         struct sta_info *sta = NULL;
472         int res;
473         u16 fc;
474         u8 *challenge = NULL;
475         u32 session_timeout, acct_interim_interval;
476         int vlan_id = 0;
477         u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN];
478         size_t resp_ies_len = 0;
479
480         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
481                 printf("handle_auth - too short payload (len=%lu)\n",
482                        (unsigned long) len);
483                 return;
484         }
485
486         auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
487         auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
488         status_code = le_to_host16(mgmt->u.auth.status_code);
489         fc = le_to_host16(mgmt->frame_control);
490
491         if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) +
492             2 + WLAN_AUTH_CHALLENGE_LEN &&
493             mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE &&
494             mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN)
495                 challenge = &mgmt->u.auth.variable[2];
496
497         wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d "
498                    "auth_transaction=%d status_code=%d wep=%d%s",
499                    MAC2STR(mgmt->sa), auth_alg, auth_transaction,
500                    status_code, !!(fc & WLAN_FC_ISWEP),
501                    challenge ? " challenge" : "");
502
503         if (hapd->tkip_countermeasures) {
504                 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
505                 goto fail;
506         }
507
508         if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) &&
509                auth_alg == WLAN_AUTH_OPEN) ||
510 #ifdef CONFIG_IEEE80211R
511               (hapd->conf->wpa &&
512                (hapd->conf->wpa_key_mgmt &
513                 (WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_FT_PSK)) &&
514                auth_alg == WLAN_AUTH_FT) ||
515 #endif /* CONFIG_IEEE80211R */
516               ((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) &&
517                auth_alg == WLAN_AUTH_SHARED_KEY))) {
518                 printf("Unsupported authentication algorithm (%d)\n",
519                        auth_alg);
520                 resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
521                 goto fail;
522         }
523
524         if (!(auth_transaction == 1 ||
525               (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) {
526                 printf("Unknown authentication transaction number (%d)\n",
527                        auth_transaction);
528                 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
529                 goto fail;
530         }
531
532         if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) {
533                 printf("Station " MACSTR " not allowed to authenticate.\n",
534                        MAC2STR(mgmt->sa));
535                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
536                 goto fail;
537         }
538
539         res = hostapd_allowed_address(hapd, mgmt->sa, (u8 *) mgmt, len,
540                                       &session_timeout,
541                                       &acct_interim_interval, &vlan_id);
542         if (res == HOSTAPD_ACL_REJECT) {
543                 printf("Station " MACSTR " not allowed to authenticate.\n",
544                        MAC2STR(mgmt->sa));
545                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
546                 goto fail;
547         }
548         if (res == HOSTAPD_ACL_PENDING) {
549                 wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR
550                            " waiting for an external authentication",
551                            MAC2STR(mgmt->sa));
552                 /* Authentication code will re-send the authentication frame
553                  * after it has received (and cached) information from the
554                  * external source. */
555                 return;
556         }
557
558         sta = ap_sta_add(hapd, mgmt->sa);
559         if (!sta) {
560                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
561                 goto fail;
562         }
563
564         if (vlan_id > 0) {
565                 if (hostapd_get_vlan_id_ifname(hapd->conf->vlan,
566                                                sta->vlan_id) == NULL) {
567                         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
568                                        HOSTAPD_LEVEL_INFO, "Invalid VLAN ID "
569                                        "%d received from RADIUS server",
570                                        vlan_id);
571                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
572                         goto fail;
573                 }
574                 sta->vlan_id = vlan_id;
575                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
576                                HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id);
577         }
578
579         sta->flags &= ~WLAN_STA_PREAUTH;
580         ieee802_1x_notify_pre_auth(sta->eapol_sm, 0);
581
582         if (hapd->conf->radius->acct_interim_interval == 0 &&
583             acct_interim_interval)
584                 sta->acct_interim_interval = acct_interim_interval;
585         if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT)
586                 ap_sta_session_timeout(hapd, sta, session_timeout);
587         else
588                 ap_sta_no_session_timeout(hapd, sta);
589
590         switch (auth_alg) {
591         case WLAN_AUTH_OPEN:
592                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
593                                HOSTAPD_LEVEL_DEBUG,
594                                "authentication OK (open system)");
595 #ifdef IEEE80211_REQUIRE_AUTH_ACK
596                 /* Station will be marked authenticated if it ACKs the
597                  * authentication reply. */
598 #else
599                 sta->flags |= WLAN_STA_AUTH;
600                 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
601                 sta->auth_alg = WLAN_AUTH_OPEN;
602                 mlme_authenticate_indication(hapd, sta);
603 #endif
604                 break;
605         case WLAN_AUTH_SHARED_KEY:
606                 resp = auth_shared_key(hapd, sta, auth_transaction, challenge,
607                                        fc & WLAN_FC_ISWEP);
608                 sta->auth_alg = WLAN_AUTH_SHARED_KEY;
609                 mlme_authenticate_indication(hapd, sta);
610                 if (sta->challenge && auth_transaction == 1) {
611                         resp_ies[0] = WLAN_EID_CHALLENGE;
612                         resp_ies[1] = WLAN_AUTH_CHALLENGE_LEN;
613                         os_memcpy(resp_ies + 2, sta->challenge,
614                                   WLAN_AUTH_CHALLENGE_LEN);
615                         resp_ies_len = 2 + WLAN_AUTH_CHALLENGE_LEN;
616                 }
617                 break;
618 #ifdef CONFIG_IEEE80211R
619         case WLAN_AUTH_FT:
620                 sta->auth_alg = WLAN_AUTH_FT;
621                 if (sta->wpa_sm == NULL)
622                         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
623                                                         sta->addr);
624                 if (sta->wpa_sm == NULL) {
625                         wpa_printf(MSG_DEBUG, "FT: Failed to initialize WPA "
626                                    "state machine");
627                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
628                         goto fail;
629                 }
630                 wpa_ft_process_auth(sta->wpa_sm, mgmt->bssid,
631                                     auth_transaction, mgmt->u.auth.variable,
632                                     len - IEEE80211_HDRLEN -
633                                     sizeof(mgmt->u.auth),
634                                     handle_auth_ft_finish, hapd);
635                 /* handle_auth_ft_finish() callback will complete auth. */
636                 return;
637 #endif /* CONFIG_IEEE80211R */
638         }
639
640  fail:
641         send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg,
642                         auth_transaction + 1, resp, resp_ies, resp_ies_len);
643 }
644
645
646 static void handle_assoc(struct hostapd_data *hapd,
647                          struct ieee80211_mgmt *mgmt, size_t len, int reassoc)
648 {
649         u16 capab_info, listen_interval;
650         u16 resp = WLAN_STATUS_SUCCESS;
651         u8 *pos, *wpa_ie;
652         size_t wpa_ie_len;
653         int send_deauth = 0, send_len, left, i;
654         struct sta_info *sta;
655         struct ieee802_11_elems elems;
656         u8 buf[sizeof(struct ieee80211_mgmt) + 512];
657         struct ieee80211_mgmt *reply;
658
659         if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
660                                       sizeof(mgmt->u.assoc_req))) {
661                 printf("handle_assoc(reassoc=%d) - too short payload (len=%lu)"
662                        "\n", reassoc, (unsigned long) len);
663                 return;
664         }
665
666         if (reassoc) {
667                 capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info);
668                 listen_interval = le_to_host16(
669                         mgmt->u.reassoc_req.listen_interval);
670                 wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR
671                            " capab_info=0x%02x listen_interval=%d current_ap="
672                            MACSTR,
673                            MAC2STR(mgmt->sa), capab_info, listen_interval,
674                            MAC2STR(mgmt->u.reassoc_req.current_ap));
675                 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req));
676                 pos = mgmt->u.reassoc_req.variable;
677         } else {
678                 capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
679                 listen_interval = le_to_host16(
680                         mgmt->u.assoc_req.listen_interval);
681                 wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR
682                            " capab_info=0x%02x listen_interval=%d",
683                            MAC2STR(mgmt->sa), capab_info, listen_interval);
684                 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req));
685                 pos = mgmt->u.assoc_req.variable;
686         }
687
688         sta = ap_get_sta(hapd, mgmt->sa);
689 #ifdef CONFIG_IEEE80211R
690         if (sta && sta->auth_alg == WLAN_AUTH_FT &&
691             (sta->flags & WLAN_STA_AUTH) == 0) {
692                 wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate "
693                            "prior to authentication since it is using "
694                            "over-the-DS FT", MAC2STR(mgmt->sa));
695         } else
696 #endif /* CONFIG_IEEE80211R */
697         if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
698                 printf("STA " MACSTR " trying to associate before "
699                        "authentication\n", MAC2STR(mgmt->sa));
700                 if (sta) {
701                         printf("  sta: addr=" MACSTR " aid=%d flags=0x%04x\n",
702                                MAC2STR(sta->addr), sta->aid, sta->flags);
703                 }
704                 send_deauth = 1;
705                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
706                 goto fail;
707         }
708
709         if (hapd->tkip_countermeasures) {
710                 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
711                 goto fail;
712         }
713
714         if (listen_interval > hapd->conf->max_listen_interval) {
715                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
716                                HOSTAPD_LEVEL_DEBUG,
717                                "Too large Listen Interval (%d)",
718                                listen_interval);
719                 resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE;
720                 goto fail;
721         }
722
723         sta->capability = capab_info;
724         sta->listen_interval = listen_interval;
725
726         /* followed by SSID and Supported rates; and HT capabilities if 802.11n
727          * is used */
728         if (ieee802_11_parse_elems(pos, left, &elems, 1) == ParseFailed ||
729             !elems.ssid) {
730                 printf("STA " MACSTR " sent invalid association request\n",
731                        MAC2STR(sta->addr));
732                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
733                 goto fail;
734         }
735
736         if (elems.ssid_len != hapd->conf->ssid.ssid_len ||
737             os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) != 0)
738         {
739                 char ssid_txt[33];
740                 ieee802_11_print_ssid(ssid_txt, elems.ssid, elems.ssid_len);
741                 printf("Station " MACSTR " tried to associate with "
742                        "unknown SSID '%s'\n", MAC2STR(sta->addr), ssid_txt);
743                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
744                 goto fail;
745         }
746
747         sta->flags &= ~WLAN_STA_WME;
748         if (elems.wme && hapd->conf->wme_enabled) {
749                 if (hostapd_eid_wme_valid(hapd, elems.wme, elems.wme_len))
750                         hostapd_logger(hapd, sta->addr,
751                                        HOSTAPD_MODULE_WPA,
752                                        HOSTAPD_LEVEL_DEBUG,
753                                        "invalid WME element in association "
754                                        "request");
755                 else
756                         sta->flags |= WLAN_STA_WME;
757         }
758
759         if (!elems.supp_rates) {
760                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
761                                HOSTAPD_LEVEL_DEBUG,
762                                "No supported rates element in AssocReq");
763                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
764                 goto fail;
765         }
766
767         if (elems.supp_rates_len > sizeof(sta->supported_rates)) {
768                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
769                                HOSTAPD_LEVEL_DEBUG,
770                                "Invalid supported rates element length %d",
771                                elems.supp_rates_len);
772                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
773                 goto fail;
774         }
775
776         os_memset(sta->supported_rates, 0, sizeof(sta->supported_rates));
777         os_memcpy(sta->supported_rates, elems.supp_rates,
778                   elems.supp_rates_len);
779         sta->supported_rates_len = elems.supp_rates_len;
780
781         if (elems.ext_supp_rates) {
782                 if (elems.supp_rates_len + elems.ext_supp_rates_len >
783                     sizeof(sta->supported_rates)) {
784                         hostapd_logger(hapd, mgmt->sa,
785                                        HOSTAPD_MODULE_IEEE80211,
786                                        HOSTAPD_LEVEL_DEBUG,
787                                        "Invalid supported rates element length"
788                                        " %d+%d", elems.supp_rates_len,
789                                        elems.ext_supp_rates_len);
790                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
791                         goto fail;
792                 }
793
794                 os_memcpy(sta->supported_rates + elems.supp_rates_len,
795                           elems.ext_supp_rates, elems.ext_supp_rates_len);
796                 sta->supported_rates_len += elems.ext_supp_rates_len;
797         }
798
799 #ifdef CONFIG_IEEE80211N
800         /* save HT capabilities in the sta object */
801         os_memset(&sta->ht_capabilities, 0, sizeof(sta->ht_capabilities));
802         if (elems.ht_capabilities &&
803             elems.ht_capabilities_len >= sizeof(struct ieee80211_ht_capability)
804             && (sta->flags & WLAN_STA_WME)) {
805                 /* note: without WMM capability, treat the sta as non-HT */
806                 sta->flags |= WLAN_STA_HT;
807                 sta->ht_capabilities.id = WLAN_EID_HT_CAP;
808                 sta->ht_capabilities.length =
809                         sizeof(struct ieee80211_ht_capability);
810                 os_memcpy(&sta->ht_capabilities.data,
811                           elems.ht_capabilities,
812                           sizeof(struct ieee80211_ht_capability));
813         } else
814                 sta->flags &= ~WLAN_STA_HT;
815 #endif /* CONFIG_IEEE80211N */
816
817         if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) {
818                 wpa_ie = elems.rsn_ie;
819                 wpa_ie_len = elems.rsn_ie_len;
820         } else if ((hapd->conf->wpa & WPA_PROTO_WPA) &&
821                    elems.wpa_ie) {
822                 wpa_ie = elems.wpa_ie;
823                 wpa_ie_len = elems.wpa_ie_len;
824         } else {
825                 wpa_ie = NULL;
826                 wpa_ie_len = 0;
827         }
828 #ifdef CONFIG_WPS
829         if (hapd->conf->wps_state && wpa_ie == NULL) {
830                 if (elems.wps_ie) {
831                         wpa_printf(MSG_DEBUG, "STA included WPS IE in "
832                                    "(Re)Association Request - assume WPS is "
833                                    "used");
834                         sta->flags |= WLAN_STA_WPS;
835                 } else {
836                         wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE "
837                                    "in (Re)Association Request - possible WPS "
838                                    "use");
839                         sta->flags |= WLAN_STA_MAYBE_WPS;
840                 }
841         } else
842 #endif /* CONFIG_WPS */
843         if (hapd->conf->wpa && wpa_ie == NULL) {
844                 printf("STA " MACSTR ": No WPA/RSN IE in association "
845                        "request\n", MAC2STR(sta->addr));
846                 resp = WLAN_STATUS_INVALID_IE;
847                 goto fail;
848         }
849
850         if (hapd->conf->wpa && wpa_ie) {
851                 int res;
852                 wpa_ie -= 2;
853                 wpa_ie_len += 2;
854                 if (sta->wpa_sm == NULL)
855                         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
856                                                         sta->addr);
857                 if (sta->wpa_sm == NULL) {
858                         printf("Failed to initialize WPA state machine\n");
859                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
860                         goto fail;
861                 }
862                 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
863                                           wpa_ie, wpa_ie_len,
864                                           elems.mdie, elems.mdie_len);
865                 if (res == WPA_INVALID_GROUP)
866                         resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
867                 else if (res == WPA_INVALID_PAIRWISE)
868                         resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
869                 else if (res == WPA_INVALID_AKMP)
870                         resp = WLAN_STATUS_AKMP_NOT_VALID;
871                 else if (res == WPA_ALLOC_FAIL)
872                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
873 #ifdef CONFIG_IEEE80211W
874                 else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION)
875                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE; /* FIX */
876                 else if (res == WPA_INVALID_MGMT_GROUP_CIPHER)
877                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE; /* FIX */
878 #endif /* CONFIG_IEEE80211W */
879                 else if (res == WPA_INVALID_MDIE)
880                         resp = WLAN_STATUS_INVALID_MDIE;
881                 else if (res != WPA_IE_OK)
882                         resp = WLAN_STATUS_INVALID_IE;
883                 if (resp != WLAN_STATUS_SUCCESS)
884                         goto fail;
885 #ifdef CONFIG_IEEE80211W
886                 if ((sta->flags & WLAN_STA_MFP) && !sta->ping_timed_out) {
887                         /*
888                          * STA has already been associated with MFP and ping
889                          * timeout has not been reached. Reject the
890                          * association attempt temporarily and start ping, if
891                          * one is not pending.
892                          */
893
894                         if (sta->ping_count == 0)
895                                 ap_sta_start_ping(hapd, sta);
896
897                         resp = WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;
898                         goto fail;
899                 }
900
901                 if (wpa_auth_uses_mfp(sta->wpa_sm))
902                         sta->flags |= WLAN_STA_MFP;
903                 else
904                         sta->flags &= ~WLAN_STA_MFP;
905 #endif /* CONFIG_IEEE80211W */
906
907 #ifdef CONFIG_IEEE80211R
908                 if (sta->auth_alg == WLAN_AUTH_FT) {
909                         if (!reassoc) {
910                                 wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried "
911                                            "to use association (not "
912                                            "re-association) with FT auth_alg",
913                                            MAC2STR(sta->addr));
914                                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
915                                 goto fail;
916                         }
917
918                         resp = wpa_ft_validate_reassoc(sta->wpa_sm, pos, left);
919                         if (resp != WLAN_STATUS_SUCCESS)
920                                 goto fail;
921                 }
922 #endif /* CONFIG_IEEE80211R */
923         }
924
925         if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
926                 sta->flags |= WLAN_STA_NONERP;
927         for (i = 0; i < sta->supported_rates_len; i++) {
928                 if ((sta->supported_rates[i] & 0x7f) > 22) {
929                         sta->flags &= ~WLAN_STA_NONERP;
930                         break;
931                 }
932         }
933         if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) {
934                 sta->nonerp_set = 1;
935                 hapd->iface->num_sta_non_erp++;
936                 if (hapd->iface->num_sta_non_erp == 1)
937                         ieee802_11_set_beacons(hapd->iface);
938         }
939
940         if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) &&
941             !sta->no_short_slot_time_set) {
942                 sta->no_short_slot_time_set = 1;
943                 hapd->iface->num_sta_no_short_slot_time++;
944                 if (hapd->iface->current_mode->mode ==
945                     HOSTAPD_MODE_IEEE80211G &&
946                     hapd->iface->num_sta_no_short_slot_time == 1)
947                         ieee802_11_set_beacons(hapd->iface);
948         }
949
950         if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
951                 sta->flags |= WLAN_STA_SHORT_PREAMBLE;
952         else
953                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
954
955         if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
956             !sta->no_short_preamble_set) {
957                 sta->no_short_preamble_set = 1;
958                 hapd->iface->num_sta_no_short_preamble++;
959                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
960                     && hapd->iface->num_sta_no_short_preamble == 1)
961                         ieee802_11_set_beacons(hapd->iface);
962         }
963
964 #ifdef CONFIG_IEEE80211N
965         if (sta->flags & WLAN_STA_HT) {
966                 if ((sta->ht_capabilities.data.capabilities_info &
967                      HT_CAP_INFO_GREEN_FIELD) == 0) {
968                         hapd->iface->num_sta_ht_no_gf++;
969                         wpa_printf(MSG_DEBUG, "%s STA " MACSTR " - no "
970                                    "greenfield, num of non-gf stations %d",
971                                    __func__, MAC2STR(sta->addr),
972                                    hapd->iface->num_sta_ht_no_gf);
973                 }
974                 if ((sta->ht_capabilities.data.capabilities_info &
975                      HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET) == 0) {
976                         hapd->iface->num_sta_ht_20mhz++;
977                         wpa_printf(MSG_DEBUG, "%s STA " MACSTR " - 20 MHz HT, "
978                                    "num of 20MHz HT STAs %d",
979                                    __func__, MAC2STR(sta->addr),
980                                    hapd->iface->num_sta_ht_20mhz);
981                 }
982         } else {
983                 hapd->iface->num_sta_no_ht++;
984                 if (hapd->iconf->ieee80211n) {
985                         wpa_printf(MSG_DEBUG, "%s STA " MACSTR
986                                    " - no HT, num of non-HT stations %d",
987                                    __func__, MAC2STR(sta->addr),
988                                    hapd->iface->num_sta_no_ht);
989                 }
990         }
991
992         if (hostapd_ht_operation_update(hapd->iface) > 0)
993                 ieee802_11_set_beacons(hapd->iface);
994 #endif /* CONFIG_IEEE80211N */
995
996         /* get a unique AID */
997         if (sta->aid > 0) {
998                 wpa_printf(MSG_DEBUG, "  old AID %d", sta->aid);
999         } else {
1000                 for (sta->aid = 1; sta->aid <= MAX_AID_TABLE_SIZE; sta->aid++)
1001                         if (hapd->sta_aid[sta->aid - 1] == NULL)
1002                                 break;
1003                 if (sta->aid > MAX_AID_TABLE_SIZE) {
1004                         sta->aid = 0;
1005                         resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
1006                         wpa_printf(MSG_ERROR, "  no room for more AIDs");
1007                         goto fail;
1008                 } else {
1009                         hapd->sta_aid[sta->aid - 1] = sta;
1010                         wpa_printf(MSG_DEBUG, "  new AID %d", sta->aid);
1011                 }
1012         }
1013
1014         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1015                        HOSTAPD_LEVEL_DEBUG,
1016                        "association OK (aid %d)", sta->aid);
1017         /* Station will be marked associated, after it acknowledges AssocResp
1018          */
1019
1020         if (reassoc) {
1021                 os_memcpy(sta->previous_ap, mgmt->u.reassoc_req.current_ap,
1022                           ETH_ALEN);
1023         }
1024
1025         if (sta->last_assoc_req)
1026                 os_free(sta->last_assoc_req);
1027         sta->last_assoc_req = os_malloc(len);
1028         if (sta->last_assoc_req)
1029                 os_memcpy(sta->last_assoc_req, mgmt, len);
1030
1031         /* Make sure that the previously registered inactivity timer will not
1032          * remove the STA immediately. */
1033         sta->timeout_next = STA_NULLFUNC;
1034
1035  fail:
1036         os_memset(buf, 0, sizeof(buf));
1037         reply = (struct ieee80211_mgmt *) buf;
1038         reply->frame_control =
1039                 IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1040                              (send_deauth ? WLAN_FC_STYPE_DEAUTH :
1041                               (reassoc ? WLAN_FC_STYPE_REASSOC_RESP :
1042                                WLAN_FC_STYPE_ASSOC_RESP)));
1043         os_memcpy(reply->da, mgmt->sa, ETH_ALEN);
1044         os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
1045         os_memcpy(reply->bssid, mgmt->bssid, ETH_ALEN);
1046
1047         send_len = IEEE80211_HDRLEN;
1048         if (send_deauth) {
1049                 send_len += sizeof(reply->u.deauth);
1050                 reply->u.deauth.reason_code = host_to_le16(resp);
1051         } else {
1052                 u8 *p;
1053                 send_len += sizeof(reply->u.assoc_resp);
1054                 reply->u.assoc_resp.capab_info =
1055                         host_to_le16(hostapd_own_capab_info(hapd, sta, 0));
1056                 reply->u.assoc_resp.status_code = host_to_le16(resp);
1057                 reply->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0)
1058                                                        | BIT(14) | BIT(15));
1059                 /* Supported rates */
1060                 p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable);
1061                 /* Extended supported rates */
1062                 p = hostapd_eid_ext_supp_rates(hapd, p);
1063                 if (sta->flags & WLAN_STA_WME)
1064                         p = hostapd_eid_wme(hapd, p);
1065
1066                 p = hostapd_eid_ht_capabilities_info(hapd, p);
1067                 p = hostapd_eid_ht_operation(hapd, p);
1068
1069 #ifdef CONFIG_IEEE80211R
1070                 if (resp == WLAN_STATUS_SUCCESS) {
1071                         /* IEEE 802.11r: Mobility Domain Information, Fast BSS
1072                          * Transition Information, RSN */
1073                         p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p,
1074                                                         buf + sizeof(buf) - p,
1075                                                         sta->auth_alg);
1076                 }
1077 #endif /* CONFIG_IEEE80211R */
1078
1079 #ifdef CONFIG_IEEE80211W
1080                 if (resp == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY)
1081                         p = hostapd_eid_assoc_comeback_time(hapd, sta, p);
1082 #endif /* CONFIG_IEEE80211W */
1083
1084                 send_len += p - reply->u.assoc_resp.variable;
1085         }
1086
1087         if (hostapd_send_mgmt_frame(hapd, reply, send_len, 0) < 0)
1088                 perror("handle_assoc: send");
1089 }
1090
1091
1092 static void handle_disassoc(struct hostapd_data *hapd,
1093                             struct ieee80211_mgmt *mgmt, size_t len)
1094 {
1095         struct sta_info *sta;
1096
1097         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) {
1098                 printf("handle_disassoc - too short payload (len=%lu)\n",
1099                        (unsigned long) len);
1100                 return;
1101         }
1102
1103         wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d",
1104                    MAC2STR(mgmt->sa),
1105                    le_to_host16(mgmt->u.disassoc.reason_code));
1106
1107         sta = ap_get_sta(hapd, mgmt->sa);
1108         if (sta == NULL) {
1109                 printf("Station " MACSTR " trying to disassociate, but it "
1110                        "is not associated.\n", MAC2STR(mgmt->sa));
1111                 return;
1112         }
1113
1114         sta->flags &= ~WLAN_STA_ASSOC;
1115         wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
1116         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1117                        HOSTAPD_LEVEL_INFO, "disassociated");
1118         sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1119         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1120         /* Stop Accounting and IEEE 802.1X sessions, but leave the STA
1121          * authenticated. */
1122         accounting_sta_stop(hapd, sta);
1123         ieee802_1x_free_station(sta);
1124         hostapd_sta_remove(hapd, sta->addr);
1125
1126         if (sta->timeout_next == STA_NULLFUNC ||
1127             sta->timeout_next == STA_DISASSOC) {
1128                 sta->timeout_next = STA_DEAUTH;
1129                 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1130                 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
1131                                        hapd, sta);
1132         }
1133
1134         mlme_disassociate_indication(
1135                 hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code));
1136 }
1137
1138
1139 static void handle_deauth(struct hostapd_data *hapd,
1140                           struct ieee80211_mgmt *mgmt, size_t len)
1141 {
1142         struct sta_info *sta;
1143
1144         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) {
1145                 printf("handle_deauth - too short payload (len=%lu)\n",
1146                        (unsigned long) len);
1147                 return;
1148         }
1149
1150         wpa_printf(MSG_DEBUG, "deauthentication: STA=" MACSTR
1151                    " reason_code=%d",
1152                    MAC2STR(mgmt->sa),
1153                    le_to_host16(mgmt->u.deauth.reason_code));
1154
1155         sta = ap_get_sta(hapd, mgmt->sa);
1156         if (sta == NULL) {
1157                 printf("Station " MACSTR " trying to deauthenticate, but it "
1158                        "is not authenticated.\n", MAC2STR(mgmt->sa));
1159                 return;
1160         }
1161
1162         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
1163         wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
1164         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1165                        HOSTAPD_LEVEL_DEBUG, "deauthenticated");
1166         mlme_deauthenticate_indication(
1167                 hapd, sta, le_to_host16(mgmt->u.deauth.reason_code));
1168         sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1169         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1170         ap_free_sta(hapd, sta);
1171 }
1172
1173
1174 static void handle_beacon(struct hostapd_data *hapd,
1175                           struct ieee80211_mgmt *mgmt, size_t len,
1176                           struct hostapd_frame_info *fi)
1177 {
1178         struct ieee802_11_elems elems;
1179
1180         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) {
1181                 printf("handle_beacon - too short payload (len=%lu)\n",
1182                        (unsigned long) len);
1183                 return;
1184         }
1185
1186         (void) ieee802_11_parse_elems(mgmt->u.beacon.variable,
1187                                       len - (IEEE80211_HDRLEN +
1188                                              sizeof(mgmt->u.beacon)), &elems,
1189                                       0);
1190
1191         ap_list_process_beacon(hapd->iface, mgmt, &elems, fi);
1192 }
1193
1194
1195 #ifdef CONFIG_IEEE80211W
1196 static void hostapd_ping_action(struct hostapd_data *hapd,
1197                                 struct ieee80211_mgmt *mgmt, size_t len)
1198 {
1199         struct sta_info *sta;
1200         u8 *end;
1201         int i;
1202
1203         end = mgmt->u.action.u.ping_resp.trans_id + WLAN_PING_TRANS_ID_LEN;
1204         if (((u8 *) mgmt) + len < end) {
1205                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short Ping Action "
1206                            "frame (len=%lu)", (unsigned long) len);
1207                 return;
1208         }
1209
1210         if (mgmt->u.action.u.ping_resp.action != WLAN_PING_RESPONSE) {
1211                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Unexpected Ping Action %d",
1212                            mgmt->u.action.u.ping_resp.action);
1213                 return;
1214         }
1215
1216         /* MLME-PING.confirm */
1217
1218         sta = ap_get_sta(hapd, mgmt->sa);
1219         if (sta == NULL || sta->ping_trans_id == NULL) {
1220                 wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching STA with "
1221                            "pending ping request found");
1222                 return;
1223         }
1224
1225         for (i = 0; i < sta->ping_count; i++) {
1226                 if (os_memcmp(sta->ping_trans_id + i * WLAN_PING_TRANS_ID_LEN,
1227                               mgmt->u.action.u.ping_resp.trans_id,
1228                               WLAN_PING_TRANS_ID_LEN) == 0)
1229                         break;
1230         }
1231
1232         if (i >= sta->ping_count) {
1233                 wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching ping "
1234                            "transaction identifier found");
1235                 return;
1236         }
1237
1238         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1239                        HOSTAPD_LEVEL_DEBUG, "Reply to pending ping received");
1240         ap_sta_stop_ping(hapd, sta);
1241 }
1242 #endif /* CONFIG_IEEE80211W */
1243
1244
1245 static void handle_action(struct hostapd_data *hapd,
1246                           struct ieee80211_mgmt *mgmt, size_t len)
1247 {
1248         if (len < IEEE80211_HDRLEN + 1) {
1249                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1250                                HOSTAPD_LEVEL_DEBUG,
1251                                "handle_action - too short payload (len=%lu)",
1252                                (unsigned long) len);
1253                 return;
1254         }
1255
1256         switch (mgmt->u.action.category) {
1257 #ifdef CONFIG_IEEE80211R
1258         case WLAN_ACTION_FT:
1259         {
1260                 struct sta_info *sta;
1261
1262                 sta = ap_get_sta(hapd, mgmt->sa);
1263                 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
1264                         wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored FT Action "
1265                                    "frame from unassociated STA " MACSTR,
1266                                    MAC2STR(mgmt->sa));
1267                         return;
1268                 }
1269
1270                 if (wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action,
1271                                      len - IEEE80211_HDRLEN))
1272                         break;
1273
1274                 return;
1275         }
1276 #endif /* CONFIG_IEEE80211R */
1277         case WLAN_ACTION_WMM:
1278                 hostapd_wme_action(hapd, mgmt, len);
1279                 return;
1280 #ifdef CONFIG_IEEE80211W
1281         case WLAN_ACTION_PING:
1282                 hostapd_ping_action(hapd, mgmt, len);
1283                 return;
1284 #endif /* CONFIG_IEEE80211W */
1285         }
1286
1287         hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1288                        HOSTAPD_LEVEL_DEBUG,
1289                        "handle_action - unknown action category %d or invalid "
1290                        "frame",
1291                        mgmt->u.action.category);
1292         if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) &&
1293             !(mgmt->sa[0] & 0x01)) {
1294                 /*
1295                  * IEEE 802.11-REVma/D9.0 - 7.3.1.11
1296                  * Return the Action frame to the source without change
1297                  * except that MSB of the Category set to 1.
1298                  */
1299                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action "
1300                            "frame back to sender");
1301                 os_memcpy(mgmt->da, mgmt->sa, ETH_ALEN);
1302                 os_memcpy(mgmt->sa, hapd->own_addr, ETH_ALEN);
1303                 os_memcpy(mgmt->bssid, hapd->own_addr, ETH_ALEN);
1304                 mgmt->u.action.category |= 0x80;
1305
1306                 hostapd_send_mgmt_frame(hapd, mgmt, len, 0);
1307         }
1308 }
1309
1310
1311 /**
1312  * ieee802_11_mgmt - process incoming IEEE 802.11 management frames
1313  * @hapd: hostapd BSS data structure (the BSS to which the management frame was
1314  * sent to)
1315  * @buf: management frame data (starting from IEEE 802.11 header)
1316  * @len: length of frame data in octets
1317  * @stype: management frame subtype from frame control field
1318  *
1319  * Process all incoming IEEE 802.11 management frames. This will be called for
1320  * each frame received from the kernel driver through wlan#ap interface. In
1321  * addition, it can be called to re-inserted pending frames (e.g., when using
1322  * external RADIUS server as an MAC ACL).
1323  */
1324 void ieee802_11_mgmt(struct hostapd_data *hapd, u8 *buf, size_t len, u16 stype,
1325                      struct hostapd_frame_info *fi)
1326 {
1327         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) buf;
1328         int broadcast;
1329
1330         if (stype == WLAN_FC_STYPE_BEACON) {
1331                 handle_beacon(hapd, mgmt, len, fi);
1332                 return;
1333         }
1334
1335         if (fi && fi->passive_scan)
1336                 return;
1337
1338         broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff &&
1339                 mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff &&
1340                 mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff;
1341
1342         if (!broadcast &&
1343             os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) {
1344                 printf("MGMT: BSSID=" MACSTR " not our address\n",
1345                        MAC2STR(mgmt->bssid));
1346                 return;
1347         }
1348
1349
1350         if (stype == WLAN_FC_STYPE_PROBE_REQ) {
1351                 handle_probe_req(hapd, mgmt, len);
1352                 return;
1353         }
1354
1355         if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) {
1356                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1357                                HOSTAPD_LEVEL_DEBUG,
1358                                "MGMT: DA=" MACSTR " not our address",
1359                                MAC2STR(mgmt->da));
1360                 return;
1361         }
1362
1363         switch (stype) {
1364         case WLAN_FC_STYPE_AUTH:
1365                 wpa_printf(MSG_DEBUG, "mgmt::auth");
1366                 handle_auth(hapd, mgmt, len);
1367                 break;
1368         case WLAN_FC_STYPE_ASSOC_REQ:
1369                 wpa_printf(MSG_DEBUG, "mgmt::assoc_req");
1370                 handle_assoc(hapd, mgmt, len, 0);
1371                 break;
1372         case WLAN_FC_STYPE_REASSOC_REQ:
1373                 wpa_printf(MSG_DEBUG, "mgmt::reassoc_req");
1374                 handle_assoc(hapd, mgmt, len, 1);
1375                 break;
1376         case WLAN_FC_STYPE_DISASSOC:
1377                 wpa_printf(MSG_DEBUG, "mgmt::disassoc");
1378                 handle_disassoc(hapd, mgmt, len);
1379                 break;
1380         case WLAN_FC_STYPE_DEAUTH:
1381                 wpa_printf(MSG_DEBUG, "mgmt::deauth");
1382                 handle_deauth(hapd, mgmt, len);
1383                 break;
1384         case WLAN_FC_STYPE_ACTION:
1385                 wpa_printf(MSG_DEBUG, "mgmt::action");
1386                 handle_action(hapd, mgmt, len);
1387                 break;
1388         default:
1389                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1390                                HOSTAPD_LEVEL_DEBUG,
1391                                "unknown mgmt frame subtype %d", stype);
1392                 break;
1393         }
1394 }
1395
1396
1397 static void handle_auth_cb(struct hostapd_data *hapd,
1398                            struct ieee80211_mgmt *mgmt,
1399                            size_t len, int ok)
1400 {
1401         u16 auth_alg, auth_transaction, status_code;
1402         struct sta_info *sta;
1403
1404         if (!ok) {
1405                 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1406                                HOSTAPD_LEVEL_NOTICE,
1407                                "did not acknowledge authentication response");
1408                 return;
1409         }
1410
1411         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
1412                 printf("handle_auth_cb - too short payload (len=%lu)\n",
1413                        (unsigned long) len);
1414                 return;
1415         }
1416
1417         auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
1418         auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
1419         status_code = le_to_host16(mgmt->u.auth.status_code);
1420
1421         sta = ap_get_sta(hapd, mgmt->da);
1422         if (!sta) {
1423                 printf("handle_auth_cb: STA " MACSTR " not found\n",
1424                        MAC2STR(mgmt->da));
1425                 return;
1426         }
1427
1428         if (status_code == WLAN_STATUS_SUCCESS &&
1429             ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
1430              (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
1431                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1432                                HOSTAPD_LEVEL_INFO, "authenticated");
1433                 sta->flags |= WLAN_STA_AUTH;
1434         }
1435 }
1436
1437
1438 static void handle_assoc_cb(struct hostapd_data *hapd,
1439                             struct ieee80211_mgmt *mgmt,
1440                             size_t len, int reassoc, int ok)
1441 {
1442         u16 status;
1443         struct sta_info *sta;
1444         int new_assoc = 1;
1445         struct ht_cap_ie *ht_cap = NULL;
1446
1447         if (!ok) {
1448                 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1449                                HOSTAPD_LEVEL_DEBUG,
1450                                "did not acknowledge association response");
1451                 return;
1452         }
1453
1454         if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) :
1455                                       sizeof(mgmt->u.assoc_resp))) {
1456                 printf("handle_assoc_cb(reassoc=%d) - too short payload "
1457                        "(len=%lu)\n", reassoc, (unsigned long) len);
1458                 return;
1459         }
1460
1461         if (reassoc)
1462                 status = le_to_host16(mgmt->u.reassoc_resp.status_code);
1463         else
1464                 status = le_to_host16(mgmt->u.assoc_resp.status_code);
1465
1466         sta = ap_get_sta(hapd, mgmt->da);
1467         if (!sta) {
1468                 printf("handle_assoc_cb: STA " MACSTR " not found\n",
1469                        MAC2STR(mgmt->da));
1470                 return;
1471         }
1472
1473         if (status != WLAN_STATUS_SUCCESS)
1474                 goto fail;
1475
1476         /* Stop previous accounting session, if one is started, and allocate
1477          * new session id for the new session. */
1478         accounting_sta_stop(hapd, sta);
1479
1480         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1481                        HOSTAPD_LEVEL_INFO,
1482                        "associated (aid %d)",
1483                        sta->aid);
1484
1485         if (sta->flags & WLAN_STA_ASSOC)
1486                 new_assoc = 0;
1487         sta->flags |= WLAN_STA_ASSOC;
1488
1489         if (reassoc)
1490                 mlme_reassociate_indication(hapd, sta);
1491         else
1492                 mlme_associate_indication(hapd, sta);
1493
1494 #ifdef CONFIG_IEEE80211N
1495         if (sta->flags & WLAN_STA_HT)
1496                 ht_cap = &sta->ht_capabilities;
1497 #endif /* CONFIG_IEEE80211N */
1498
1499 #ifdef CONFIG_IEEE80211W
1500         sta->ping_timed_out = 0;
1501 #endif /* CONFIG_IEEE80211W */
1502
1503         if (hostapd_sta_add(hapd->conf->iface, hapd, sta->addr, sta->aid,
1504                             sta->capability, sta->supported_rates,
1505                             sta->supported_rates_len, 0, sta->listen_interval,
1506                             ht_cap))
1507         {
1508                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1509                                HOSTAPD_LEVEL_NOTICE,
1510                                "Could not add STA to kernel driver");
1511         }
1512
1513         if (sta->eapol_sm == NULL) {
1514                 /*
1515                  * This STA does not use RADIUS server for EAP authentication,
1516                  * so bind it to the selected VLAN interface now, since the
1517                  * interface selection is not going to change anymore.
1518                  */
1519                 ap_sta_bind_vlan(hapd, sta, 0);
1520         } else if (sta->vlan_id) {
1521                 /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */
1522                 ap_sta_bind_vlan(hapd, sta, 0);
1523         }
1524         if (sta->flags & WLAN_STA_SHORT_PREAMBLE) {
1525                 hostapd_sta_set_flags(hapd, sta->addr, sta->flags,
1526                                       WLAN_STA_SHORT_PREAMBLE, ~0);
1527         } else {
1528                 hostapd_sta_set_flags(hapd, sta->addr, sta->flags,
1529                                       0, ~WLAN_STA_SHORT_PREAMBLE);
1530         }
1531
1532         if (sta->auth_alg == WLAN_AUTH_FT)
1533                 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
1534         else
1535                 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
1536         hostapd_new_assoc_sta(hapd, sta, !new_assoc);
1537
1538         ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
1539
1540  fail:
1541         /* Copy of the association request is not needed anymore */
1542         if (sta->last_assoc_req) {
1543                 os_free(sta->last_assoc_req);
1544                 sta->last_assoc_req = NULL;
1545         }
1546 }
1547
1548
1549 void ieee802_11_mgmt_cb(struct hostapd_data *hapd, u8 *buf, size_t len,
1550                         u16 stype, int ok)
1551 {
1552         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) buf;
1553
1554         switch (stype) {
1555         case WLAN_FC_STYPE_AUTH:
1556                 wpa_printf(MSG_DEBUG, "mgmt::auth cb");
1557                 handle_auth_cb(hapd, mgmt, len, ok);
1558                 break;
1559         case WLAN_FC_STYPE_ASSOC_RESP:
1560                 wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb");
1561                 handle_assoc_cb(hapd, mgmt, len, 0, ok);
1562                 break;
1563         case WLAN_FC_STYPE_REASSOC_RESP:
1564                 wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb");
1565                 handle_assoc_cb(hapd, mgmt, len, 1, ok);
1566                 break;
1567         case WLAN_FC_STYPE_PROBE_RESP:
1568                 wpa_printf(MSG_DEBUG, "mgmt::proberesp cb");
1569                 break;
1570         case WLAN_FC_STYPE_DEAUTH:
1571                 /* ignore */
1572                 break;
1573         case WLAN_FC_STYPE_ACTION:
1574                 wpa_printf(MSG_DEBUG, "mgmt::action cb");
1575                 break;
1576         default:
1577                 printf("unknown mgmt cb frame subtype %d\n", stype);
1578                 break;
1579         }
1580 }
1581
1582
1583 static void ieee80211_tkip_countermeasures_stop(void *eloop_ctx,
1584                                                 void *timeout_ctx)
1585 {
1586         struct hostapd_data *hapd = eloop_ctx;
1587         hapd->tkip_countermeasures = 0;
1588         hostapd_set_countermeasures(hapd, 0);
1589         hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
1590                        HOSTAPD_LEVEL_INFO, "TKIP countermeasures ended");
1591 }
1592
1593
1594 static void ieee80211_tkip_countermeasures_start(struct hostapd_data *hapd)
1595 {
1596         struct sta_info *sta;
1597
1598         hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
1599                        HOSTAPD_LEVEL_INFO, "TKIP countermeasures initiated");
1600
1601         wpa_auth_countermeasures_start(hapd->wpa_auth);
1602         hapd->tkip_countermeasures = 1;
1603         hostapd_set_countermeasures(hapd, 1);
1604         wpa_gtk_rekey(hapd->wpa_auth);
1605         eloop_cancel_timeout(ieee80211_tkip_countermeasures_stop, hapd, NULL);
1606         eloop_register_timeout(60, 0, ieee80211_tkip_countermeasures_stop,
1607                                hapd, NULL);
1608         for (sta = hapd->sta_list; sta != NULL; sta = sta->next) {
1609                 hostapd_sta_deauth(hapd, sta->addr,
1610                                    WLAN_REASON_MICHAEL_MIC_FAILURE);
1611                 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC |
1612                                 WLAN_STA_AUTHORIZED);
1613                 hostapd_sta_remove(hapd, sta->addr);
1614         }
1615 }
1616
1617
1618 void ieee80211_michael_mic_failure(struct hostapd_data *hapd, const u8 *addr,
1619                                    int local)
1620 {
1621         time_t now;
1622
1623         if (addr && local) {
1624                 struct sta_info *sta = ap_get_sta(hapd, addr);
1625                 if (sta != NULL) {
1626                         wpa_auth_sta_local_mic_failure_report(sta->wpa_sm);
1627                         hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
1628                                        HOSTAPD_LEVEL_INFO,
1629                                        "Michael MIC failure detected in "
1630                                        "received frame");
1631                         mlme_michaelmicfailure_indication(hapd, addr);
1632                 } else {
1633                         wpa_printf(MSG_DEBUG,
1634                                    "MLME-MICHAELMICFAILURE.indication "
1635                                    "for not associated STA (" MACSTR
1636                                    ") ignored", MAC2STR(addr));
1637                         return;
1638                 }
1639         }
1640
1641         time(&now);
1642         if (now > hapd->michael_mic_failure + 60) {
1643                 hapd->michael_mic_failures = 1;
1644         } else {
1645                 hapd->michael_mic_failures++;
1646                 if (hapd->michael_mic_failures > 1)
1647                         ieee80211_tkip_countermeasures_start(hapd);
1648         }
1649         hapd->michael_mic_failure = now;
1650 }
1651
1652
1653 int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
1654 {
1655         /* TODO */
1656         return 0;
1657 }
1658
1659
1660 int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
1661                            char *buf, size_t buflen)
1662 {
1663         /* TODO */
1664         return 0;
1665 }
1666
1667 #endif /* CONFIG_NATIVE_WINDOWS */