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[netbsd-mini2440.git] / dist / wpa / hostapd / ieee802_11.c
blob1ebf985940998891a79820bd9f66963f9bdb424b
1 /*
2 * hostapd / IEEE 802.11 Management
3 * Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi>
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
15 #include "includes.h"
16
17 #ifndef CONFIG_NATIVE_WINDOWS
18
19 #include <net/if.h>
20
21 #include "eloop.h"
22 #include "hostapd.h"
23 #include "ieee802_11.h"
24 #include "beacon.h"
25 #include "hw_features.h"
26 #include "radius/radius.h"
27 #include "radius/radius_client.h"
28 #include "ieee802_11_auth.h"
29 #include "sta_info.h"
30 #include "rc4.h"
31 #include "ieee802_1x.h"
32 #include "wpa.h"
33 #include "wme.h"
34 #include "ap_list.h"
35 #include "accounting.h"
36 #include "driver.h"
37 #include "ieee802_11h.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 u16 hostapd_own_capab_info(struct hostapd_data *hapd, struct sta_info *sta,
104 int probe)
105 {
106 int capab = WLAN_CAPABILITY_ESS;
107 int privacy;
108
109 if (hapd->iface->num_sta_no_short_preamble == 0 &&
110 hapd->iconf->preamble == SHORT_PREAMBLE)
111 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
112
113 privacy = hapd->conf->ssid.wep.keys_set;
114
115 if (hapd->conf->ieee802_1x &&
116 (hapd->conf->default_wep_key_len ||
117 hapd->conf->individual_wep_key_len))
118 privacy = 1;
119
120 if (hapd->conf->wpa)
121 privacy = 1;
122
123 if (sta) {
124 int policy, def_klen;
125 if (probe && sta->ssid_probe) {
126 policy = sta->ssid_probe->security_policy;
127 def_klen = sta->ssid_probe->wep.default_len;
128 } else {
129 policy = sta->ssid->security_policy;
130 def_klen = sta->ssid->wep.default_len;
131 }
132 privacy = policy != SECURITY_PLAINTEXT;
133 if (policy == SECURITY_IEEE_802_1X && def_klen == 0)
134 privacy = 0;
135 }
136
137 if (privacy)
138 capab |= WLAN_CAPABILITY_PRIVACY;
139
140 if (hapd->iface->current_mode &&
141 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G &&
142 hapd->iface->num_sta_no_short_slot_time == 0)
143 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
144
145 if (hapd->iface->dfs_enable)
146 capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
147
148 return capab;
149 }
150
151
152 #define OUI_MICROSOFT 0x0050f2 /* Microsoft (also used in Wi-Fi specs)
153 * 00:50:F2 */
154
155 static int ieee802_11_parse_vendor_specific(struct hostapd_data *hapd,
156 u8 *pos, size_t elen,
157 struct ieee802_11_elems *elems,
158 int show_errors)
159 {
160 unsigned int oui;
161
162 /* first 3 bytes in vendor specific information element are the IEEE
163 * OUI of the vendor. The following byte is used a vendor specific
164 * sub-type. */
165 if (elen < 4) {
166 if (show_errors) {
167 wpa_printf(MSG_MSGDUMP, "short vendor specific "
168 "information element ignored (len=%lu)",
169 (unsigned long) elen);
170 }
171 return -1;
172 }
173
174 oui = WPA_GET_BE24(pos);
175 switch (oui) {
176 case OUI_MICROSOFT:
177 /* Microsoft/Wi-Fi information elements are further typed and
178 * subtyped */
179 switch (pos[3]) {
180 case 1:
181 /* Microsoft OUI (00:50:F2) with OUI Type 1:
182 * real WPA information element */
183 elems->wpa_ie = pos;
184 elems->wpa_ie_len = elen;
185 break;
186 case WME_OUI_TYPE: /* this is a Wi-Fi WME info. element */
187 if (elen < 5) {
188 wpa_printf(MSG_MSGDUMP, "short WME "
189 "information element ignored "
190 "(len=%lu)",
191 (unsigned long) elen);
192 return -1;
193 }
194 switch (pos[4]) {
195 case WME_OUI_SUBTYPE_INFORMATION_ELEMENT:
196 case WME_OUI_SUBTYPE_PARAMETER_ELEMENT:
197 elems->wme = pos;
198 elems->wme_len = elen;
199 break;
200 case WME_OUI_SUBTYPE_TSPEC_ELEMENT:
201 elems->wme_tspec = pos;
202 elems->wme_tspec_len = elen;
203 break;
204 default:
205 wpa_printf(MSG_MSGDUMP, "unknown WME "
206 "information element ignored "
207 "(subtype=%d len=%lu)",
208 pos[4], (unsigned long) elen);
209 return -1;
210 }
211 break;
212 default:
213 wpa_printf(MSG_MSGDUMP, "Unknown Microsoft "
214 "information element ignored "
215 "(type=%d len=%lu)\n",
216 pos[3], (unsigned long) elen);
217 return -1;
218 }
219 break;
220
221 default:
222 wpa_printf(MSG_MSGDUMP, "unknown vendor specific information "
223 "element ignored (vendor OUI %02x:%02x:%02x "
224 "len=%lu)",
225 pos[0], pos[1], pos[2], (unsigned long) elen);
226 return -1;
227 }
228
229 return 0;
230 }
231
232
233 ParseRes ieee802_11_parse_elems(struct hostapd_data *hapd, u8 *start,
234 size_t len,
235 struct ieee802_11_elems *elems,
236 int show_errors)
237 {
238 size_t left = len;
239 u8 *pos = start;
240 int unknown = 0;
241
242 os_memset(elems, 0, sizeof(*elems));
243
244 while (left >= 2) {
245 u8 id, elen;
246
247 id = *pos++;
248 elen = *pos++;
249 left -= 2;
250
251 if (elen > left) {
252 if (show_errors) {
253 wpa_printf(MSG_DEBUG, "IEEE 802.11 element "
254 "parse failed (id=%d elen=%d "
255 "left=%lu)",
256 id, elen, (unsigned long) left);
257 wpa_hexdump(MSG_MSGDUMP, "IEs", start, len);
258 }
259 return ParseFailed;
260 }
261
262 switch (id) {
263 case WLAN_EID_SSID:
264 elems->ssid = pos;
265 elems->ssid_len = elen;
266 break;
267 case WLAN_EID_SUPP_RATES:
268 elems->supp_rates = pos;
269 elems->supp_rates_len = elen;
270 break;
271 case WLAN_EID_FH_PARAMS:
272 elems->fh_params = pos;
273 elems->fh_params_len = elen;
274 break;
275 case WLAN_EID_DS_PARAMS:
276 elems->ds_params = pos;
277 elems->ds_params_len = elen;
278 break;
279 case WLAN_EID_CF_PARAMS:
280 elems->cf_params = pos;
281 elems->cf_params_len = elen;
282 break;
283 case WLAN_EID_TIM:
284 elems->tim = pos;
285 elems->tim_len = elen;
286 break;
287 case WLAN_EID_IBSS_PARAMS:
288 elems->ibss_params = pos;
289 elems->ibss_params_len = elen;
290 break;
291 case WLAN_EID_CHALLENGE:
292 elems->challenge = pos;
293 elems->challenge_len = elen;
294 break;
295 case WLAN_EID_ERP_INFO:
296 elems->erp_info = pos;
297 elems->erp_info_len = elen;
298 break;
299 case WLAN_EID_EXT_SUPP_RATES:
300 elems->ext_supp_rates = pos;
301 elems->ext_supp_rates_len = elen;
302 break;
303 case WLAN_EID_VENDOR_SPECIFIC:
304 if (ieee802_11_parse_vendor_specific(hapd, pos, elen,
305 elems,
306 show_errors))
307 unknown++;
308 break;
309 case WLAN_EID_RSN:
310 elems->rsn_ie = pos;
311 elems->rsn_ie_len = elen;
312 break;
313 case WLAN_EID_PWR_CAPABILITY:
314 elems->power_cap = pos;
315 elems->power_cap_len = elen;
316 break;
317 case WLAN_EID_SUPPORTED_CHANNELS:
318 elems->supp_channels = pos;
319 elems->supp_channels_len = elen;
320 break;
321 case WLAN_EID_MOBILITY_DOMAIN:
322 elems->mdie = pos;
323 elems->mdie_len = elen;
324 break;
325 case WLAN_EID_FAST_BSS_TRANSITION:
326 elems->ftie = pos;
327 elems->ftie_len = elen;
328 break;
329 default:
330 unknown++;
331 if (!show_errors)
332 break;
333 wpa_printf(MSG_MSGDUMP, "IEEE 802.11 element parse "
334 "ignored unknown element (id=%d elen=%d)",
335 id, elen);
336 break;
337 }
338
339 left -= elen;
340 pos += elen;
341 }
342
343 if (left)
344 return ParseFailed;
345
346 return unknown ? ParseUnknown : ParseOK;
347 }
348
349
350 void ieee802_11_print_ssid(char *buf, const u8 *ssid, u8 len)
351 {
352 int i;
353 if (len > HOSTAPD_MAX_SSID_LEN)
354 len = HOSTAPD_MAX_SSID_LEN;
355 for (i = 0; i < len; i++) {
356 if (ssid[i] >= 32 && ssid[i] < 127)
357 buf[i] = ssid[i];
358 else
359 buf[i] = '.';
360 }
361 buf[len] = '\0';
362 }
363
364
365 void ieee802_11_send_deauth(struct hostapd_data *hapd, u8 *addr, u16 reason)
366 {
367 struct ieee80211_mgmt mgmt;
368 char buf[30];
369
370 hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
371 HOSTAPD_LEVEL_DEBUG,
372 "deauthenticate - reason %d", reason);
373 os_snprintf(buf, sizeof(buf), "SEND-DEAUTHENTICATE %d", reason);
374 os_memset(&mgmt, 0, sizeof(mgmt));
375 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
376 WLAN_FC_STYPE_DEAUTH);
377 os_memcpy(mgmt.da, addr, ETH_ALEN);
378 os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
379 os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
380 mgmt.u.deauth.reason_code = host_to_le16(reason);
381 if (hostapd_send_mgmt_frame(hapd, &mgmt, IEEE80211_HDRLEN +
382 sizeof(mgmt.u.deauth), 0) < 0)
383 perror("ieee802_11_send_deauth: send");
384 }
385
386
387 static void ieee802_11_sta_authenticate(void *eloop_ctx, void *timeout_ctx)
388 {
389 struct hostapd_data *hapd = eloop_ctx;
390 struct ieee80211_mgmt mgmt;
391 char ssid_txt[33];
392
393 if (hapd->assoc_ap_state == WAIT_BEACON)
394 hapd->assoc_ap_state = AUTHENTICATE;
395 if (hapd->assoc_ap_state != AUTHENTICATE)
396 return;
397
398 ieee802_11_print_ssid(ssid_txt, (u8 *) hapd->assoc_ap_ssid,
399 hapd->assoc_ap_ssid_len);
400 printf("Authenticate with AP " MACSTR " SSID=%s (as station)\n",
401 MAC2STR(hapd->conf->assoc_ap_addr), ssid_txt);
402
403 os_memset(&mgmt, 0, sizeof(mgmt));
404 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
405 WLAN_FC_STYPE_AUTH);
406 /* Request TX callback */
407 mgmt.frame_control |= host_to_le16(BIT(1));
408 os_memcpy(mgmt.da, hapd->conf->assoc_ap_addr, ETH_ALEN);
409 os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
410 os_memcpy(mgmt.bssid, hapd->conf->assoc_ap_addr, ETH_ALEN);
411 mgmt.u.auth.auth_alg = host_to_le16(WLAN_AUTH_OPEN);
412 mgmt.u.auth.auth_transaction = host_to_le16(1);
413 mgmt.u.auth.status_code = host_to_le16(0);
414 if (hostapd_send_mgmt_frame(hapd, &mgmt, IEEE80211_HDRLEN +
415 sizeof(mgmt.u.auth), 0) < 0)
416 perror("ieee802_11_sta_authenticate: send");
417
418 /* Try to authenticate again, if this attempt fails or times out. */
419 eloop_register_timeout(5, 0, ieee802_11_sta_authenticate, hapd, NULL);
420 }
421
422
423 static void ieee802_11_sta_associate(void *eloop_ctx, void *timeout_ctx)
424 {
425 struct hostapd_data *hapd = eloop_ctx;
426 u8 buf[256];
427 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) buf;
428 u8 *p;
429 char ssid_txt[33];
430
431 if (hapd->assoc_ap_state == AUTHENTICATE)
432 hapd->assoc_ap_state = ASSOCIATE;
433 if (hapd->assoc_ap_state != ASSOCIATE)
434 return;
435
436 ieee802_11_print_ssid(ssid_txt, (u8 *) hapd->assoc_ap_ssid,
437 hapd->assoc_ap_ssid_len);
438 printf("Associate with AP " MACSTR " SSID=%s (as station)\n",
439 MAC2STR(hapd->conf->assoc_ap_addr), ssid_txt);
440
441 os_memset(mgmt, 0, sizeof(*mgmt));
442 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
443 WLAN_FC_STYPE_ASSOC_REQ);
444 /* Request TX callback */
445 mgmt->frame_control |= host_to_le16(BIT(1));
446 os_memcpy(mgmt->da, hapd->conf->assoc_ap_addr, ETH_ALEN);
447 os_memcpy(mgmt->sa, hapd->own_addr, ETH_ALEN);
448 os_memcpy(mgmt->bssid, hapd->conf->assoc_ap_addr, ETH_ALEN);
449 mgmt->u.assoc_req.capab_info = host_to_le16(0);
450 mgmt->u.assoc_req.listen_interval = host_to_le16(1);
451 p = &mgmt->u.assoc_req.variable[0];
452
453 *p++ = WLAN_EID_SSID;
454 *p++ = hapd->assoc_ap_ssid_len;
455 os_memcpy(p, hapd->assoc_ap_ssid, hapd->assoc_ap_ssid_len);
456 p += hapd->assoc_ap_ssid_len;
457
458 p = hostapd_eid_supp_rates(hapd, p);
459 p = hostapd_eid_ext_supp_rates(hapd, p);
460
461 if (hostapd_send_mgmt_frame(hapd, mgmt, p - (u8 *) mgmt, 0) < 0)
462 perror("ieee802_11_sta_associate: send");
463
464 /* Try to authenticate again, if this attempt fails or times out. */
465 eloop_register_timeout(5, 0, ieee802_11_sta_associate, hapd, NULL);
466 }
467
468
469 static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta,
470 u16 auth_transaction, u8 *challenge, int iswep)
471 {
472 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
473 HOSTAPD_LEVEL_DEBUG,
474 "authentication (shared key, transaction %d)",
475 auth_transaction);
476
477 if (auth_transaction == 1) {
478 if (!sta->challenge) {
479 /* Generate a pseudo-random challenge */
480 u8 key[8];
481 time_t now;
482 int r;
483 sta->challenge = os_zalloc(WLAN_AUTH_CHALLENGE_LEN);
484 if (sta->challenge == NULL)
485 return WLAN_STATUS_UNSPECIFIED_FAILURE;
486
487 now = time(NULL);
488 r = random();
489 os_memcpy(key, &now, 4);
490 os_memcpy(key + 4, &r, 4);
491 rc4(sta->challenge, WLAN_AUTH_CHALLENGE_LEN,
492 key, sizeof(key));
493 }
494 return 0;
495 }
496
497 if (auth_transaction != 3)
498 return WLAN_STATUS_UNSPECIFIED_FAILURE;
499
500 /* Transaction 3 */
501 if (!iswep || !sta->challenge || !challenge ||
502 os_memcmp(sta->challenge, challenge, WLAN_AUTH_CHALLENGE_LEN)) {
503 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
504 HOSTAPD_LEVEL_INFO,
505 "shared key authentication - invalid "
506 "challenge-response");
507 return WLAN_STATUS_CHALLENGE_FAIL;
508 }
509
510 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
511 HOSTAPD_LEVEL_DEBUG,
512 "authentication OK (shared key)");
513 #ifdef IEEE80211_REQUIRE_AUTH_ACK
514 /* Station will be marked authenticated if it ACKs the
515 * authentication reply. */
516 #else
517 sta->flags |= WLAN_STA_AUTH;
518 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
519 #endif
520 os_free(sta->challenge);
521 sta->challenge = NULL;
522
523 return 0;
524 }
525
526
527 static void send_auth_reply(struct hostapd_data *hapd,
528 const u8 *dst, const u8 *bssid,
529 u16 auth_alg, u16 auth_transaction, u16 resp,
530 const u8 *ies, size_t ies_len)
531 {
532 struct ieee80211_mgmt *reply;
533 u8 *buf;
534 size_t rlen;
535
536 rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth) + ies_len;
537 buf = os_zalloc(rlen);
538 if (buf == NULL)
539 return;
540
541 reply = (struct ieee80211_mgmt *) buf;
542 reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
543 WLAN_FC_STYPE_AUTH);
544 /* Request TX callback */
545 reply->frame_control |= host_to_le16(BIT(1));
546 os_memcpy(reply->da, dst, ETH_ALEN);
547 os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
548 os_memcpy(reply->bssid, bssid, ETH_ALEN);
549
550 reply->u.auth.auth_alg = host_to_le16(auth_alg);
551 reply->u.auth.auth_transaction = host_to_le16(auth_transaction);
552 reply->u.auth.status_code = host_to_le16(resp);
553
554 if (ies && ies_len)
555 os_memcpy(reply->u.auth.variable, ies, ies_len);
556
557 wpa_printf(MSG_DEBUG, "authentication reply: STA=" MACSTR
558 " auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu)",
559 MAC2STR(dst), auth_alg, auth_transaction,
560 resp, (unsigned long) ies_len);
561 if (hostapd_send_mgmt_frame(hapd, reply, rlen, 0) < 0)
562 perror("send_auth_reply: send");
563
564 os_free(buf);
565 }
566
567
568 #ifdef CONFIG_IEEE80211R
569 static void handle_auth_ft_finish(void *ctx, const u8 *dst, const u8 *bssid,
570 u16 auth_transaction, u16 status,
571 const u8 *ies, size_t ies_len)
572 {
573 struct hostapd_data *hapd = ctx;
574 struct sta_info *sta;
575
576 send_auth_reply(hapd, dst, bssid, WLAN_AUTH_FT, auth_transaction,
577 status, ies, ies_len);
578
579 if (status != WLAN_STATUS_SUCCESS)
580 return;
581
582 sta = ap_get_sta(hapd, dst);
583 if (sta == NULL)
584 return;
585
586 hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211,
587 HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)");
588 sta->flags |= WLAN_STA_AUTH;
589 mlme_authenticate_indication(hapd, sta);
590 }
591 #endif /* CONFIG_IEEE80211R */
592
593
594 static void handle_auth(struct hostapd_data *hapd, struct ieee80211_mgmt *mgmt,
595 size_t len)
596 {
597 u16 auth_alg, auth_transaction, status_code;
598 u16 resp = WLAN_STATUS_SUCCESS;
599 struct sta_info *sta = NULL;
600 int res;
601 u16 fc;
602 u8 *challenge = NULL;
603 u32 session_timeout, acct_interim_interval;
604 int vlan_id = 0;
605 u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN];
606 size_t resp_ies_len = 0;
607
608 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
609 printf("handle_auth - too short payload (len=%lu)\n",
610 (unsigned long) len);
611 return;
612 }
613
614 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
615 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
616 status_code = le_to_host16(mgmt->u.auth.status_code);
617 fc = le_to_host16(mgmt->frame_control);
618
619 if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) +
620 2 + WLAN_AUTH_CHALLENGE_LEN &&
621 mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE &&
622 mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN)
623 challenge = &mgmt->u.auth.variable[2];
624
625 wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d "
626 "auth_transaction=%d status_code=%d wep=%d%s",
627 MAC2STR(mgmt->sa), auth_alg, auth_transaction,
628 status_code, !!(fc & WLAN_FC_ISWEP),
629 challenge ? " challenge" : "");
630
631 if (hapd->assoc_ap_state == AUTHENTICATE && auth_transaction == 2 &&
632 os_memcmp(mgmt->sa, hapd->conf->assoc_ap_addr, ETH_ALEN) == 0 &&
633 os_memcmp(mgmt->bssid, hapd->conf->assoc_ap_addr, ETH_ALEN) == 0) {
634 if (status_code != 0) {
635 printf("Authentication (as station) with AP "
636 MACSTR " failed (status_code=%d)\n",
637 MAC2STR(hapd->conf->assoc_ap_addr),
638 status_code);
639 return;
640 }
641 printf("Authenticated (as station) with AP " MACSTR "\n",
642 MAC2STR(hapd->conf->assoc_ap_addr));
643 ieee802_11_sta_associate(hapd, NULL);
644 return;
645 }
646
647 if (hapd->tkip_countermeasures) {
648 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
649 goto fail;
650 }
651
652 if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) &&
653 auth_alg == WLAN_AUTH_OPEN) ||
654 #ifdef CONFIG_IEEE80211R
655 (hapd->conf->wpa &&
656 (hapd->conf->wpa_key_mgmt &
657 (WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_FT_PSK)) &&
658 auth_alg == WLAN_AUTH_FT) ||
659 #endif /* CONFIG_IEEE80211R */
660 ((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) &&
661 auth_alg == WLAN_AUTH_SHARED_KEY))) {
662 printf("Unsupported authentication algorithm (%d)\n",
663 auth_alg);
664 resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
665 goto fail;
666 }
667
668 if (!(auth_transaction == 1 ||
669 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) {
670 printf("Unknown authentication transaction number (%d)\n",
671 auth_transaction);
672 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
673 goto fail;
674 }
675
676 if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) {
677 printf("Station " MACSTR " not allowed to authenticate.\n",
678 MAC2STR(mgmt->sa));
679 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
680 goto fail;
681 }
682
683 res = hostapd_allowed_address(hapd, mgmt->sa, (u8 *) mgmt, len,
684 &session_timeout,
685 &acct_interim_interval, &vlan_id);
686 if (res == HOSTAPD_ACL_REJECT) {
687 printf("Station " MACSTR " not allowed to authenticate.\n",
688 MAC2STR(mgmt->sa));
689 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
690 goto fail;
691 }
692 if (res == HOSTAPD_ACL_PENDING) {
693 wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR
694 " waiting for an external authentication",
695 MAC2STR(mgmt->sa));
696 /* Authentication code will re-send the authentication frame
697 * after it has received (and cached) information from the
698 * external source. */
699 return;
700 }
701
702 sta = ap_sta_add(hapd, mgmt->sa);
703 if (!sta) {
704 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
705 goto fail;
706 }
707
708 if (vlan_id > 0) {
709 if (hostapd_get_vlan_id_ifname(hapd->conf->vlan,
710 sta->vlan_id) == NULL) {
711 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
712 HOSTAPD_LEVEL_INFO, "Invalid VLAN ID "
713 "%d received from RADIUS server",
714 vlan_id);
715 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
716 goto fail;
717 }
718 sta->vlan_id = vlan_id;
719 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
720 HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id);
721 }
722
723 sta->flags &= ~WLAN_STA_PREAUTH;
724 ieee802_1x_notify_pre_auth(sta->eapol_sm, 0);
725
726 if (hapd->conf->radius->acct_interim_interval == 0 &&
727 acct_interim_interval)
728 sta->acct_interim_interval = acct_interim_interval;
729 if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT)
730 ap_sta_session_timeout(hapd, sta, session_timeout);
731 else
732 ap_sta_no_session_timeout(hapd, sta);
733
734 switch (auth_alg) {
735 case WLAN_AUTH_OPEN:
736 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
737 HOSTAPD_LEVEL_DEBUG,
738 "authentication OK (open system)");
739 #ifdef IEEE80211_REQUIRE_AUTH_ACK
740 /* Station will be marked authenticated if it ACKs the
741 * authentication reply. */
742 #else
743 sta->flags |= WLAN_STA_AUTH;
744 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
745 sta->auth_alg = WLAN_AUTH_OPEN;
746 mlme_authenticate_indication(hapd, sta);
747 #endif
748 break;
749 case WLAN_AUTH_SHARED_KEY:
750 resp = auth_shared_key(hapd, sta, auth_transaction, challenge,
751 fc & WLAN_FC_ISWEP);
752 sta->auth_alg = WLAN_AUTH_SHARED_KEY;
753 mlme_authenticate_indication(hapd, sta);
754 if (sta->challenge && auth_transaction == 1) {
755 resp_ies[0] = WLAN_EID_CHALLENGE;
756 resp_ies[1] = WLAN_AUTH_CHALLENGE_LEN;
757 os_memcpy(resp_ies + 2, sta->challenge,
758 WLAN_AUTH_CHALLENGE_LEN);
759 resp_ies_len = 2 + WLAN_AUTH_CHALLENGE_LEN;
760 }
761 break;
762 #ifdef CONFIG_IEEE80211R
763 case WLAN_AUTH_FT:
764 sta->auth_alg = WLAN_AUTH_FT;
765 if (sta->wpa_sm == NULL)
766 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
767 sta->addr);
768 if (sta->wpa_sm == NULL) {
769 wpa_printf(MSG_DEBUG, "FT: Failed to initialize WPA "
770 "state machine");
771 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
772 goto fail;
773 }
774 wpa_ft_process_auth(sta->wpa_sm, mgmt->bssid,
775 auth_transaction, mgmt->u.auth.variable,
776 len - IEEE80211_HDRLEN -
777 sizeof(mgmt->u.auth),
778 handle_auth_ft_finish, hapd);
779 /* handle_auth_ft_finish() callback will complete auth. */
780 return;
781 #endif /* CONFIG_IEEE80211R */
782 }
783
784 fail:
785 send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg,
786 auth_transaction + 1, resp, resp_ies, resp_ies_len);
787 }
788
789
790 static void handle_assoc(struct hostapd_data *hapd,
791 struct ieee80211_mgmt *mgmt, size_t len, int reassoc)
792 {
793 u16 capab_info, listen_interval;
794 u16 resp = WLAN_STATUS_SUCCESS;
795 u8 *pos, *wpa_ie;
796 size_t wpa_ie_len;
797 int send_deauth = 0, send_len, left, i;
798 struct sta_info *sta;
799 struct ieee802_11_elems elems;
800 u8 buf[sizeof(struct ieee80211_mgmt) + 512];
801 struct ieee80211_mgmt *reply;
802
803 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
804 sizeof(mgmt->u.assoc_req))) {
805 printf("handle_assoc(reassoc=%d) - too short payload (len=%lu)"
806 "\n", reassoc, (unsigned long) len);
807 return;
808 }
809
810 if (reassoc) {
811 capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info);
812 listen_interval = le_to_host16(
813 mgmt->u.reassoc_req.listen_interval);
814 wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR
815 " capab_info=0x%02x listen_interval=%d current_ap="
816 MACSTR,
817 MAC2STR(mgmt->sa), capab_info, listen_interval,
818 MAC2STR(mgmt->u.reassoc_req.current_ap));
819 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req));
820 pos = mgmt->u.reassoc_req.variable;
821 } else {
822 capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
823 listen_interval = le_to_host16(
824 mgmt->u.assoc_req.listen_interval);
825 wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR
826 " capab_info=0x%02x listen_interval=%d",
827 MAC2STR(mgmt->sa), capab_info, listen_interval);
828 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req));
829 pos = mgmt->u.assoc_req.variable;
830 }
831
832 sta = ap_get_sta(hapd, mgmt->sa);
833 #ifdef CONFIG_IEEE80211R
834 if (sta && sta->auth_alg == WLAN_AUTH_FT &&
835 (sta->flags & WLAN_STA_AUTH) == 0) {
836 wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate "
837 "prior to authentication since it is using "
838 "over-the-DS FT", MAC2STR(mgmt->sa));
839 } else
840 #endif /* CONFIG_IEEE80211R */
841 if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
842 printf("STA " MACSTR " trying to associate before "
843 "authentication\n", MAC2STR(mgmt->sa));
844 if (sta) {
845 printf(" sta: addr=" MACSTR " aid=%d flags=0x%04x\n",
846 MAC2STR(sta->addr), sta->aid, sta->flags);
847 }
848 send_deauth = 1;
849 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
850 goto fail;
851 }
852
853 if (hapd->tkip_countermeasures) {
854 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
855 goto fail;
856 }
857
858 if (listen_interval > hapd->conf->max_listen_interval) {
859 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
860 HOSTAPD_LEVEL_DEBUG,
861 "Too large Listen Interval (%d)",
862 listen_interval);
863 resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE;
864 goto fail;
865 }
866
867 if (reassoc) {
868 os_memcpy(sta->previous_ap, mgmt->u.reassoc_req.current_ap,
869 ETH_ALEN);
870 }
871
872 sta->capability = capab_info;
873
874 /* followed by SSID and Supported rates */
875 if (ieee802_11_parse_elems(hapd, pos, left, &elems, 1) == ParseFailed
876 || !elems.ssid) {
877 printf("STA " MACSTR " sent invalid association request\n",
878 MAC2STR(sta->addr));
879 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
880 goto fail;
881 }
882
883 if (elems.ssid_len != hapd->conf->ssid.ssid_len ||
884 os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) != 0)
885 {
886 char ssid_txt[33];
887 ieee802_11_print_ssid(ssid_txt, elems.ssid, elems.ssid_len);
888 printf("Station " MACSTR " tried to associate with "
889 "unknown SSID '%s'\n", MAC2STR(sta->addr), ssid_txt);
890 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
891 goto fail;
892 }
893
894 sta->flags &= ~WLAN_STA_WME;
895 if (elems.wme && hapd->conf->wme_enabled) {
896 if (hostapd_eid_wme_valid(hapd, elems.wme, elems.wme_len))
897 hostapd_logger(hapd, sta->addr,
898 HOSTAPD_MODULE_WPA,
899 HOSTAPD_LEVEL_DEBUG,
900 "invalid WME element in association "
901 "request");
902 else
903 sta->flags |= WLAN_STA_WME;
904 }
905
906 if (!elems.supp_rates) {
907 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
908 HOSTAPD_LEVEL_DEBUG,
909 "No supported rates element in AssocReq");
910 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
911 goto fail;
912 }
913
914 if (elems.supp_rates_len > sizeof(sta->supported_rates)) {
915 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
916 HOSTAPD_LEVEL_DEBUG,
917 "Invalid supported rates element length %d",
918 elems.supp_rates_len);
919 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
920 goto fail;
921 }
922
923 os_memset(sta->supported_rates, 0, sizeof(sta->supported_rates));
924 os_memcpy(sta->supported_rates, elems.supp_rates,
925 elems.supp_rates_len);
926 sta->supported_rates_len = elems.supp_rates_len;
927
928 if (elems.ext_supp_rates) {
929 if (elems.supp_rates_len + elems.ext_supp_rates_len >
930 sizeof(sta->supported_rates)) {
931 hostapd_logger(hapd, mgmt->sa,
932 HOSTAPD_MODULE_IEEE80211,
933 HOSTAPD_LEVEL_DEBUG,
934 "Invalid supported rates element length"
935 " %d+%d", elems.supp_rates_len,
936 elems.ext_supp_rates_len);
937 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
938 goto fail;
939 }
940
941 os_memcpy(sta->supported_rates + elems.supp_rates_len,
942 elems.ext_supp_rates, elems.ext_supp_rates_len);
943 sta->supported_rates_len += elems.ext_supp_rates_len;
944 }
945
946 if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) {
947 wpa_ie = elems.rsn_ie;
948 wpa_ie_len = elems.rsn_ie_len;
949 } else if ((hapd->conf->wpa & WPA_PROTO_WPA) &&
950 elems.wpa_ie) {
951 wpa_ie = elems.wpa_ie;
952 wpa_ie_len = elems.wpa_ie_len;
953 } else {
954 wpa_ie = NULL;
955 wpa_ie_len = 0;
956 }
957 if (hapd->conf->wpa && wpa_ie == NULL) {
958 printf("STA " MACSTR ": No WPA/RSN IE in association "
959 "request\n", MAC2STR(sta->addr));
960 resp = WLAN_STATUS_INVALID_IE;
961 goto fail;
962 }
963
964 if (hapd->conf->wpa && wpa_ie) {
965 int res;
966 wpa_ie -= 2;
967 wpa_ie_len += 2;
968 if (sta->wpa_sm == NULL)
969 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
970 sta->addr);
971 if (sta->wpa_sm == NULL) {
972 printf("Failed to initialize WPA state machine\n");
973 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
974 goto fail;
975 }
976 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
977 wpa_ie, wpa_ie_len,
978 elems.mdie, elems.mdie_len);
979 if (res == WPA_INVALID_GROUP)
980 resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
981 else if (res == WPA_INVALID_PAIRWISE)
982 resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
983 else if (res == WPA_INVALID_AKMP)
984 resp = WLAN_STATUS_AKMP_NOT_VALID;
985 else if (res == WPA_ALLOC_FAIL)
986 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
987 #ifdef CONFIG_IEEE80211W
988 else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION)
989 resp = WLAN_STATUS_UNSPECIFIED_FAILURE; /* FIX */
990 else if (res == WPA_INVALID_MGMT_GROUP_CIPHER)
991 resp = WLAN_STATUS_UNSPECIFIED_FAILURE; /* FIX */
992 #endif /* CONFIG_IEEE80211W */
993 else if (res == WPA_INVALID_MDIE)
994 resp = WLAN_STATUS_INVALID_MDIE;
995 else if (res != WPA_IE_OK)
996 resp = WLAN_STATUS_INVALID_IE;
997 if (resp != WLAN_STATUS_SUCCESS)
998 goto fail;
999 #ifdef CONFIG_IEEE80211W
1000 if (wpa_auth_uses_mfp(sta->wpa_sm))
1001 sta->flags |= WLAN_STA_MFP;
1002 else
1003 sta->flags &= ~WLAN_STA_MFP;
1004 #endif /* CONFIG_IEEE80211W */
1005
1006 #ifdef CONFIG_IEEE80211R
1007 if (sta->auth_alg == WLAN_AUTH_FT) {
1008 if (!reassoc) {
1009 wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried "
1010 "to use association (not "
1011 "re-association) with FT auth_alg",
1012 MAC2STR(sta->addr));
1013 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1014 goto fail;
1015 }
1016
1017 resp = wpa_ft_validate_reassoc(sta->wpa_sm, pos, left);
1018 if (resp != WLAN_STATUS_SUCCESS)
1019 goto fail;
1020 }
1021 #endif /* CONFIG_IEEE80211R */
1022 }
1023
1024 if (hapd->iface->dfs_enable &&
1025 hapd->iconf->ieee80211h == SPECT_STRICT_BINDING) {
1026 if (hostapd_check_power_cap(hapd, elems.power_cap,
1027 elems.power_cap_len)) {
1028 resp = WLAN_STATUS_PWR_CAPABILITY_NOT_VALID;
1029 hostapd_logger(hapd, sta->addr,
1030 HOSTAPD_MODULE_IEEE80211,
1031 HOSTAPD_LEVEL_DEBUG,
1032 "Power capabilities of the station not "
1033 "acceptable");
1034 goto fail;
1035 }
1036 }
1037
1038 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
1039 sta->flags |= WLAN_STA_NONERP;
1040 for (i = 0; i < sta->supported_rates_len; i++) {
1041 if ((sta->supported_rates[i] & 0x7f) > 22) {
1042 sta->flags &= ~WLAN_STA_NONERP;
1043 break;
1044 }
1045 }
1046 if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) {
1047 sta->nonerp_set = 1;
1048 hapd->iface->num_sta_non_erp++;
1049 if (hapd->iface->num_sta_non_erp == 1)
1050 ieee802_11_set_beacons(hapd->iface);
1051 }
1052
1053 if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) &&
1054 !sta->no_short_slot_time_set) {
1055 sta->no_short_slot_time_set = 1;
1056 hapd->iface->num_sta_no_short_slot_time++;
1057 if (hapd->iface->current_mode->mode ==
1058 HOSTAPD_MODE_IEEE80211G &&
1059 hapd->iface->num_sta_no_short_slot_time == 1)
1060 ieee802_11_set_beacons(hapd->iface);
1061 }
1062
1063 if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1064 sta->flags |= WLAN_STA_SHORT_PREAMBLE;
1065 else
1066 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
1067
1068 if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
1069 !sta->no_short_preamble_set) {
1070 sta->no_short_preamble_set = 1;
1071 hapd->iface->num_sta_no_short_preamble++;
1072 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
1073 && hapd->iface->num_sta_no_short_preamble == 1)
1074 ieee802_11_set_beacons(hapd->iface);
1075 }
1076
1077 /* get a unique AID */
1078 if (sta->aid > 0) {
1079 wpa_printf(MSG_DEBUG, " old AID %d", sta->aid);
1080 } else {
1081 for (sta->aid = 1; sta->aid <= MAX_AID_TABLE_SIZE; sta->aid++)
1082 if (hapd->sta_aid[sta->aid - 1] == NULL)
1083 break;
1084 if (sta->aid > MAX_AID_TABLE_SIZE) {
1085 sta->aid = 0;
1086 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
1087 wpa_printf(MSG_ERROR, " no room for more AIDs");
1088 goto fail;
1089 } else {
1090 hapd->sta_aid[sta->aid - 1] = sta;
1091 wpa_printf(MSG_DEBUG, " new AID %d", sta->aid);
1092 }
1093 }
1094
1095 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1096 HOSTAPD_LEVEL_DEBUG,
1097 "association OK (aid %d)", sta->aid);
1098 /* Station will be marked associated, after it acknowledges AssocResp
1099 */
1100
1101 if (sta->last_assoc_req)
1102 os_free(sta->last_assoc_req);
1103 sta->last_assoc_req = os_malloc(len);
1104 if (sta->last_assoc_req)
1105 os_memcpy(sta->last_assoc_req, mgmt, len);
1106
1107 /* Make sure that the previously registered inactivity timer will not
1108 * remove the STA immediately. */
1109 sta->timeout_next = STA_NULLFUNC;
1110
1111 fail:
1112 os_memset(buf, 0, sizeof(buf));
1113 reply = (struct ieee80211_mgmt *) buf;
1114 reply->frame_control =
1115 IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1116 (send_deauth ? WLAN_FC_STYPE_DEAUTH :
1117 (reassoc ? WLAN_FC_STYPE_REASSOC_RESP :
1118 WLAN_FC_STYPE_ASSOC_RESP)));
1119 os_memcpy(reply->da, mgmt->sa, ETH_ALEN);
1120 os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
1121 os_memcpy(reply->bssid, mgmt->bssid, ETH_ALEN);
1122
1123 send_len = IEEE80211_HDRLEN;
1124 if (send_deauth) {
1125 send_len += sizeof(reply->u.deauth);
1126 reply->u.deauth.reason_code = host_to_le16(resp);
1127 } else {
1128 u8 *p;
1129 send_len += sizeof(reply->u.assoc_resp);
1130 reply->u.assoc_resp.capab_info =
1131 host_to_le16(hostapd_own_capab_info(hapd, sta, 0));
1132 reply->u.assoc_resp.status_code = host_to_le16(resp);
1133 reply->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0)
1134 | BIT(14) | BIT(15));
1135 /* Supported rates */
1136 p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable);
1137 /* Extended supported rates */
1138 p = hostapd_eid_ext_supp_rates(hapd, p);
1139 if (sta->flags & WLAN_STA_WME)
1140 p = hostapd_eid_wme(hapd, p);
1141
1142 #ifdef CONFIG_IEEE80211R
1143 if (resp == WLAN_STATUS_SUCCESS) {
1144 /* IEEE 802.11r: Mobility Domain Information, Fast BSS
1145 * Transition Information, RSN */
1146 p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p,
1147 buf + sizeof(buf) - p,
1148 sta->auth_alg);
1149 }
1150 #endif /* CONFIG_IEEE80211R */
1151
1152 send_len += p - reply->u.assoc_resp.variable;
1153
1154 /* Request TX callback */
1155 reply->frame_control |= host_to_le16(BIT(1));
1156 }
1157
1158 if (hostapd_send_mgmt_frame(hapd, reply, send_len, 0) < 0)
1159 perror("handle_assoc: send");
1160 }
1161
1162
1163 static void handle_assoc_resp(struct hostapd_data *hapd,
1164 struct ieee80211_mgmt *mgmt, size_t len)
1165 {
1166 u16 status_code, aid;
1167
1168 if (hapd->assoc_ap_state != ASSOCIATE) {
1169 printf("Unexpected association response received from " MACSTR
1170 "\n", MAC2STR(mgmt->sa));
1171 return;
1172 }
1173
1174 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_resp)) {
1175 printf("handle_assoc_resp - too short payload (len=%lu)\n",
1176 (unsigned long) len);
1177 return;
1178 }
1179
1180 if (os_memcmp(mgmt->sa, hapd->conf->assoc_ap_addr, ETH_ALEN) != 0 ||
1181 os_memcmp(mgmt->bssid, hapd->conf->assoc_ap_addr, ETH_ALEN) != 0) {
1182 printf("Received association response from unexpected address "
1183 "(SA=" MACSTR " BSSID=" MACSTR "\n",
1184 MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
1185 return;
1186 }
1187
1188 status_code = le_to_host16(mgmt->u.assoc_resp.status_code);
1189 aid = le_to_host16(mgmt->u.assoc_resp.aid);
1190 aid &= ~(BIT(14) | BIT(15));
1191
1192 if (status_code != 0) {
1193 printf("Association (as station) with AP " MACSTR " failed "
1194 "(status_code=%d)\n",
1195 MAC2STR(hapd->conf->assoc_ap_addr), status_code);
1196 /* Try to authenticate again */
1197 hapd->assoc_ap_state = AUTHENTICATE;
1198 eloop_register_timeout(5, 0, ieee802_11_sta_authenticate,
1199 hapd, NULL);
1200 }
1201
1202 printf("Associated (as station) with AP " MACSTR " (aid=%d)\n",
1203 MAC2STR(hapd->conf->assoc_ap_addr), aid);
1204 hapd->assoc_ap_aid = aid;
1205 hapd->assoc_ap_state = ASSOCIATED;
1206
1207 if (hostapd_set_assoc_ap(hapd, hapd->conf->assoc_ap_addr)) {
1208 printf("Could not set associated AP address to kernel "
1209 "driver.\n");
1210 }
1211 }
1212
1213
1214 static void handle_disassoc(struct hostapd_data *hapd,
1215 struct ieee80211_mgmt *mgmt, size_t len)
1216 {
1217 struct sta_info *sta;
1218
1219 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) {
1220 printf("handle_disassoc - too short payload (len=%lu)\n",
1221 (unsigned long) len);
1222 return;
1223 }
1224
1225 wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d",
1226 MAC2STR(mgmt->sa),
1227 le_to_host16(mgmt->u.disassoc.reason_code));
1228
1229 if (hapd->assoc_ap_state != DO_NOT_ASSOC &&
1230 os_memcmp(mgmt->sa, hapd->conf->assoc_ap_addr, ETH_ALEN) == 0) {
1231 printf("Assoc AP " MACSTR " sent disassociation "
1232 "(reason_code=%d) - try to authenticate\n",
1233 MAC2STR(hapd->conf->assoc_ap_addr),
1234 le_to_host16(mgmt->u.disassoc.reason_code));
1235 hapd->assoc_ap_state = AUTHENTICATE;
1236 ieee802_11_sta_authenticate(hapd, NULL);
1237 eloop_register_timeout(0, 500000, ieee802_11_sta_authenticate,
1238 hapd, NULL);
1239 return;
1240 }
1241
1242 sta = ap_get_sta(hapd, mgmt->sa);
1243 if (sta == NULL) {
1244 printf("Station " MACSTR " trying to disassociate, but it "
1245 "is not associated.\n", MAC2STR(mgmt->sa));
1246 return;
1247 }
1248
1249 sta->flags &= ~WLAN_STA_ASSOC;
1250 wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
1251 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1252 HOSTAPD_LEVEL_INFO, "disassociated");
1253 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1254 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1255 /* Stop Accounting and IEEE 802.1X sessions, but leave the STA
1256 * authenticated. */
1257 accounting_sta_stop(hapd, sta);
1258 ieee802_1x_free_station(sta);
1259 hostapd_sta_remove(hapd, sta->addr);
1260
1261 if (sta->timeout_next == STA_NULLFUNC ||
1262 sta->timeout_next == STA_DISASSOC) {
1263 sta->timeout_next = STA_DEAUTH;
1264 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1265 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
1266 hapd, sta);
1267 }
1268
1269 mlme_disassociate_indication(
1270 hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code));
1271 }
1272
1273
1274 static void handle_deauth(struct hostapd_data *hapd,
1275 struct ieee80211_mgmt *mgmt, size_t len)
1276 {
1277 struct sta_info *sta;
1278
1279 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) {
1280 printf("handle_deauth - too short payload (len=%lu)\n",
1281 (unsigned long) len);
1282 return;
1283 }
1284
1285 wpa_printf(MSG_DEBUG, "deauthentication: STA=" MACSTR
1286 " reason_code=%d",
1287 MAC2STR(mgmt->sa),
1288 le_to_host16(mgmt->u.deauth.reason_code));
1289
1290 if (hapd->assoc_ap_state != DO_NOT_ASSOC &&
1291 os_memcmp(mgmt->sa, hapd->conf->assoc_ap_addr, ETH_ALEN) == 0) {
1292 printf("Assoc AP " MACSTR " sent deauthentication "
1293 "(reason_code=%d) - try to authenticate\n",
1294 MAC2STR(hapd->conf->assoc_ap_addr),
1295 le_to_host16(mgmt->u.deauth.reason_code));
1296 hapd->assoc_ap_state = AUTHENTICATE;
1297 eloop_register_timeout(0, 500000, ieee802_11_sta_authenticate,
1298 hapd, NULL);
1299 return;
1300 }
1301
1302 sta = ap_get_sta(hapd, mgmt->sa);
1303 if (sta == NULL) {
1304 printf("Station " MACSTR " trying to deauthenticate, but it "
1305 "is not authenticated.\n", MAC2STR(mgmt->sa));
1306 return;
1307 }
1308
1309 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
1310 wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
1311 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1312 HOSTAPD_LEVEL_DEBUG, "deauthenticated");
1313 mlme_deauthenticate_indication(
1314 hapd, sta, le_to_host16(mgmt->u.deauth.reason_code));
1315 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1316 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1317 ap_free_sta(hapd, sta);
1318 }
1319
1320
1321 static void handle_beacon(struct hostapd_data *hapd,
1322 struct ieee80211_mgmt *mgmt, size_t len,
1323 struct hostapd_frame_info *fi)
1324 {
1325 struct ieee802_11_elems elems;
1326
1327 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) {
1328 printf("handle_beacon - too short payload (len=%lu)\n",
1329 (unsigned long) len);
1330 return;
1331 }
1332
1333 (void) ieee802_11_parse_elems(hapd, mgmt->u.beacon.variable,
1334 len - (IEEE80211_HDRLEN +
1335 sizeof(mgmt->u.beacon)), &elems,
1336 0);
1337
1338 if (hapd->assoc_ap_state == WAIT_BEACON &&
1339 os_memcmp(mgmt->sa, hapd->conf->assoc_ap_addr, ETH_ALEN) == 0) {
1340 if (elems.ssid && elems.ssid_len <= 32) {
1341 os_memcpy(hapd->assoc_ap_ssid, elems.ssid,
1342 elems.ssid_len);
1343 hapd->assoc_ap_ssid[elems.ssid_len] = '\0';
1344 hapd->assoc_ap_ssid_len = elems.ssid_len;
1345 }
1346 ieee802_11_sta_authenticate(hapd, NULL);
1347 }
1348
1349 ap_list_process_beacon(hapd->iface, mgmt, &elems, fi);
1350 }
1351
1352
1353 static void handle_action(struct hostapd_data *hapd,
1354 struct ieee80211_mgmt *mgmt, size_t len)
1355 {
1356 if (len < IEEE80211_HDRLEN + 1) {
1357 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1358 HOSTAPD_LEVEL_DEBUG,
1359 "handle_action - too short payload (len=%lu)",
1360 (unsigned long) len);
1361 return;
1362 }
1363
1364 switch (mgmt->u.action.category) {
1365 #ifdef CONFIG_IEEE80211R
1366 case WLAN_ACTION_FT:
1367 {
1368 struct sta_info *sta;
1369
1370 sta = ap_get_sta(hapd, mgmt->sa);
1371 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
1372 wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored FT Action "
1373 "frame from unassociated STA " MACSTR,
1374 MAC2STR(mgmt->sa));
1375 return;
1376 }
1377
1378 if (wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action,
1379 len - IEEE80211_HDRLEN))
1380 break;
1381
1382 return;
1383 }
1384 #endif /* CONFIG_IEEE80211R */
1385 case WME_ACTION_CATEGORY:
1386 hostapd_wme_action(hapd, mgmt, len);
1387 return;
1388 }
1389
1390 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1391 HOSTAPD_LEVEL_DEBUG,
1392 "handle_action - unknown action category %d or invalid "
1393 "frame",
1394 mgmt->u.action.category);
1395 if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) &&
1396 !(mgmt->sa[0] & 0x01)) {
1397 /*
1398 * IEEE 802.11-REVma/D9.0 - 7.3.1.11
1399 * Return the Action frame to the source without change
1400 * except that MSB of the Category set to 1.
1401 */
1402 wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action "
1403 "frame back to sender");
1404 os_memcpy(mgmt->da, mgmt->sa, ETH_ALEN);
1405 os_memcpy(mgmt->sa, hapd->own_addr, ETH_ALEN);
1406 os_memcpy(mgmt->bssid, hapd->own_addr, ETH_ALEN);
1407 mgmt->u.action.category |= 0x80;
1408
1409 hostapd_send_mgmt_frame(hapd, mgmt, len, 0);
1410 }
1411 }
1412
1413
1414 /**
1415 * ieee802_11_mgmt - process incoming IEEE 802.11 management frames
1416 * @hapd: hostapd BSS data structure (the BSS to which the management frame was
1417 * sent to)
1418 * @buf: management frame data (starting from IEEE 802.11 header)
1419 * @len: length of frame data in octets
1420 * @stype: management frame subtype from frame control field
1421 *
1422 * Process all incoming IEEE 802.11 management frames. This will be called for
1423 * each frame received from the kernel driver through wlan#ap interface. In
1424 * addition, it can be called to re-inserted pending frames (e.g., when using
1425 * external RADIUS server as an MAC ACL).
1426 */
1427 void ieee802_11_mgmt(struct hostapd_data *hapd, u8 *buf, size_t len, u16 stype,
1428 struct hostapd_frame_info *fi)
1429 {
1430 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) buf;
1431 int broadcast;
1432
1433 if (stype == WLAN_FC_STYPE_BEACON) {
1434 handle_beacon(hapd, mgmt, len, fi);
1435 return;
1436 }
1437
1438 if (fi && fi->passive_scan)
1439 return;
1440
1441 broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff &&
1442 mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff &&
1443 mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff;
1444
1445 if (!broadcast &&
1446 os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0 &&
1447 (hapd->assoc_ap_state == DO_NOT_ASSOC ||
1448 os_memcmp(mgmt->bssid, hapd->conf->assoc_ap_addr, ETH_ALEN) != 0))
1449 {
1450 printf("MGMT: BSSID=" MACSTR " not our address\n",
1451 MAC2STR(mgmt->bssid));
1452 return;
1453 }
1454
1455
1456 if (stype == WLAN_FC_STYPE_PROBE_REQ) {
1457 handle_probe_req(hapd, mgmt, len);
1458 return;
1459 }
1460
1461 if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) {
1462 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1463 HOSTAPD_LEVEL_DEBUG,
1464 "MGMT: DA=" MACSTR " not our address",
1465 MAC2STR(mgmt->da));
1466 return;
1467 }
1468
1469 switch (stype) {
1470 case WLAN_FC_STYPE_AUTH:
1471 wpa_printf(MSG_DEBUG, "mgmt::auth");
1472 handle_auth(hapd, mgmt, len);
1473 break;
1474 case WLAN_FC_STYPE_ASSOC_REQ:
1475 wpa_printf(MSG_DEBUG, "mgmt::assoc_req");
1476 handle_assoc(hapd, mgmt, len, 0);
1477 break;
1478 case WLAN_FC_STYPE_ASSOC_RESP:
1479 wpa_printf(MSG_DEBUG, "mgmt::assoc_resp");
1480 handle_assoc_resp(hapd, mgmt, len);
1481 break;
1482 case WLAN_FC_STYPE_REASSOC_REQ:
1483 wpa_printf(MSG_DEBUG, "mgmt::reassoc_req");
1484 handle_assoc(hapd, mgmt, len, 1);
1485 break;
1486 case WLAN_FC_STYPE_DISASSOC:
1487 wpa_printf(MSG_DEBUG, "mgmt::disassoc");
1488 handle_disassoc(hapd, mgmt, len);
1489 break;
1490 case WLAN_FC_STYPE_DEAUTH:
1491 wpa_printf(MSG_DEBUG, "mgmt::deauth");
1492 handle_deauth(hapd, mgmt, len);
1493 break;
1494 case WLAN_FC_STYPE_ACTION:
1495 wpa_printf(MSG_DEBUG, "mgmt::action");
1496 handle_action(hapd, mgmt, len);
1497 break;
1498 default:
1499 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1500 HOSTAPD_LEVEL_DEBUG,
1501 "unknown mgmt frame subtype %d", stype);
1502 break;
1503 }
1504 }
1505
1506
1507 static void handle_auth_cb(struct hostapd_data *hapd,
1508 struct ieee80211_mgmt *mgmt,
1509 size_t len, int ok)
1510 {
1511 u16 auth_alg, auth_transaction, status_code;
1512 struct sta_info *sta;
1513
1514 if (!ok) {
1515 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1516 HOSTAPD_LEVEL_NOTICE,
1517 "did not acknowledge authentication response");
1518 return;
1519 }
1520
1521 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
1522 printf("handle_auth_cb - too short payload (len=%lu)\n",
1523 (unsigned long) len);
1524 return;
1525 }
1526
1527 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
1528 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
1529 status_code = le_to_host16(mgmt->u.auth.status_code);
1530
1531 sta = ap_get_sta(hapd, mgmt->da);
1532 if (!sta) {
1533 printf("handle_auth_cb: STA " MACSTR " not found\n",
1534 MAC2STR(mgmt->da));
1535 return;
1536 }
1537
1538 if (status_code == WLAN_STATUS_SUCCESS &&
1539 ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
1540 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
1541 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1542 HOSTAPD_LEVEL_INFO, "authenticated");
1543 sta->flags |= WLAN_STA_AUTH;
1544 }
1545 }
1546
1547
1548 static void handle_assoc_cb(struct hostapd_data *hapd,
1549 struct ieee80211_mgmt *mgmt,
1550 size_t len, int reassoc, int ok)
1551 {
1552 u16 status;
1553 struct sta_info *sta;
1554 int new_assoc = 1;
1555
1556 if (!ok) {
1557 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1558 HOSTAPD_LEVEL_DEBUG,
1559 "did not acknowledge association response");
1560 return;
1561 }
1562
1563 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) :
1564 sizeof(mgmt->u.assoc_resp))) {
1565 printf("handle_assoc_cb(reassoc=%d) - too short payload "
1566 "(len=%lu)\n", reassoc, (unsigned long) len);
1567 return;
1568 }
1569
1570 if (reassoc)
1571 status = le_to_host16(mgmt->u.reassoc_resp.status_code);
1572 else
1573 status = le_to_host16(mgmt->u.assoc_resp.status_code);
1574
1575 sta = ap_get_sta(hapd, mgmt->da);
1576 if (!sta) {
1577 printf("handle_assoc_cb: STA " MACSTR " not found\n",
1578 MAC2STR(mgmt->da));
1579 return;
1580 }
1581
1582 if (status != WLAN_STATUS_SUCCESS)
1583 goto fail;
1584
1585 /* Stop previous accounting session, if one is started, and allocate
1586 * new session id for the new session. */
1587 accounting_sta_stop(hapd, sta);
1588 accounting_sta_get_id(hapd, sta);
1589
1590 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1591 HOSTAPD_LEVEL_INFO,
1592 "associated (aid %d, accounting session %08X-%08X)",
1593 sta->aid, sta->acct_session_id_hi,
1594 sta->acct_session_id_lo);
1595
1596 if (sta->flags & WLAN_STA_ASSOC)
1597 new_assoc = 0;
1598 sta->flags |= WLAN_STA_ASSOC;
1599
1600 if (reassoc)
1601 mlme_reassociate_indication(hapd, sta);
1602 else
1603 mlme_associate_indication(hapd, sta);
1604
1605 if (hostapd_sta_add(hapd->conf->iface, hapd, sta->addr, sta->aid,
1606 sta->capability, sta->supported_rates,
1607 sta->supported_rates_len, 0, sta->listen_interval))
1608 {
1609 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1610 HOSTAPD_LEVEL_NOTICE,
1611 "Could not add STA to kernel driver");
1612 }
1613
1614 if (sta->eapol_sm == NULL) {
1615 /*
1616 * This STA does not use RADIUS server for EAP authentication,
1617 * so bind it to the selected VLAN interface now, since the
1618 * interface selection is not going to change anymore.
1619 */
1620 ap_sta_bind_vlan(hapd, sta, 0);
1621 } else if (sta->vlan_id) {
1622 /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */
1623 ap_sta_bind_vlan(hapd, sta, 0);
1624 }
1625 if (sta->flags & WLAN_STA_SHORT_PREAMBLE) {
1626 hostapd_sta_set_flags(hapd, sta->addr, sta->flags,
1627 WLAN_STA_SHORT_PREAMBLE, ~0);
1628 } else {
1629 hostapd_sta_set_flags(hapd, sta->addr, sta->flags,
1630 0, ~WLAN_STA_SHORT_PREAMBLE);
1631 }
1632
1633 if (sta->auth_alg == WLAN_AUTH_FT)
1634 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
1635 else
1636 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
1637 hostapd_new_assoc_sta(hapd, sta, !new_assoc);
1638
1639 ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
1640
1641 fail:
1642 /* Copy of the association request is not needed anymore */
1643 if (sta->last_assoc_req) {
1644 os_free(sta->last_assoc_req);
1645 sta->last_assoc_req = NULL;
1646 }
1647 }
1648
1649
1650 void ieee802_11_mgmt_cb(struct hostapd_data *hapd, u8 *buf, size_t len,
1651 u16 stype, int ok)
1652 {
1653 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) buf;
1654
1655 switch (stype) {
1656 case WLAN_FC_STYPE_AUTH:
1657 wpa_printf(MSG_DEBUG, "mgmt::auth cb");
1658 handle_auth_cb(hapd, mgmt, len, ok);
1659 break;
1660 case WLAN_FC_STYPE_ASSOC_RESP:
1661 wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb");
1662 handle_assoc_cb(hapd, mgmt, len, 0, ok);
1663 break;
1664 case WLAN_FC_STYPE_REASSOC_RESP:
1665 wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb");
1666 handle_assoc_cb(hapd, mgmt, len, 1, ok);
1667 break;
1668 case WLAN_FC_STYPE_PROBE_RESP:
1669 wpa_printf(MSG_DEBUG, "mgmt::proberesp cb");
1670 break;
1671 case WLAN_FC_STYPE_DEAUTH:
1672 /* ignore */
1673 break;
1674 default:
1675 printf("unknown mgmt cb frame subtype %d\n", stype);
1676 break;
1677 }
1678 }
1679
1680
1681 static void ieee80211_tkip_countermeasures_stop(void *eloop_ctx,
1682 void *timeout_ctx)
1683 {
1684 struct hostapd_data *hapd = eloop_ctx;
1685 hapd->tkip_countermeasures = 0;
1686 hostapd_set_countermeasures(hapd, 0);
1687 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
1688 HOSTAPD_LEVEL_INFO, "TKIP countermeasures ended");
1689 }
1690
1691
1692 static void ieee80211_tkip_countermeasures_start(struct hostapd_data *hapd)
1693 {
1694 struct sta_info *sta;
1695
1696 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
1697 HOSTAPD_LEVEL_INFO, "TKIP countermeasures initiated");
1698
1699 wpa_auth_countermeasures_start(hapd->wpa_auth);
1700 hapd->tkip_countermeasures = 1;
1701 hostapd_set_countermeasures(hapd, 1);
1702 wpa_gtk_rekey(hapd->wpa_auth);
1703 eloop_cancel_timeout(ieee80211_tkip_countermeasures_stop, hapd, NULL);
1704 eloop_register_timeout(60, 0, ieee80211_tkip_countermeasures_stop,
1705 hapd, NULL);
1706 for (sta = hapd->sta_list; sta != NULL; sta = sta->next) {
1707 hostapd_sta_deauth(hapd, sta->addr,
1708 WLAN_REASON_MICHAEL_MIC_FAILURE);
1709 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC |
1710 WLAN_STA_AUTHORIZED);
1711 hostapd_sta_remove(hapd, sta->addr);
1712 }
1713 }
1714
1715
1716 void ieee80211_michael_mic_failure(struct hostapd_data *hapd, const u8 *addr,
1717 int local)
1718 {
1719 time_t now;
1720
1721 if (addr && local) {
1722 struct sta_info *sta = ap_get_sta(hapd, addr);
1723 if (sta != NULL) {
1724 wpa_auth_sta_local_mic_failure_report(sta->wpa_sm);
1725 hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
1726 HOSTAPD_LEVEL_INFO,
1727 "Michael MIC failure detected in "
1728 "received frame");
1729 mlme_michaelmicfailure_indication(hapd, addr);
1730 } else {
1731 wpa_printf(MSG_DEBUG,
1732 "MLME-MICHAELMICFAILURE.indication "
1733 "for not associated STA (" MACSTR
1734 ") ignored", MAC2STR(addr));
1735 return;
1736 }
1737 }
1738
1739 time(&now);
1740 if (now > hapd->michael_mic_failure + 60) {
1741 hapd->michael_mic_failures = 1;
1742 } else {
1743 hapd->michael_mic_failures++;
1744 if (hapd->michael_mic_failures > 1)
1745 ieee80211_tkip_countermeasures_start(hapd);
1746 }
1747 hapd->michael_mic_failure = now;
1748 }
1749
1750
1751 int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
1752 {
1753 /* TODO */
1754 return 0;
1755 }
1756
1757
1758 int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
1759 char *buf, size_t buflen)
1760 {
1761 /* TODO */
1762 return 0;
1763 }
1764
1765 #endif /* CONFIG_NATIVE_WINDOWS */
NetBSD on the FriendlyARM MINI2440