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Fix get_interfaces() driver call to use correct drv_priv data
[thirdparty/hostap.git] / src / ap / ieee802_11.c
CommitLineData
6fc6879b
JM		 1/*
2 * hostapd / IEEE 802.11 Management
ef580012 3 * Copyright (c) 2002-2010, Jouni Malinen <j@w1.fi>
6fc6879b
JM		 4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 */
14
1057d78e 15#include "utils/includes.h"
6fc6879b
JM		 16
17#ifndef CONFIG_NATIVE_WINDOWS
18
1057d78e
JM		 19#include "utils/common.h"
20#include "utils/eloop.h"
03da66bd 21#include "crypto/crypto.h"
2ce86d9d 22#include "drivers/driver.h"
81f4f619
JM		 23#include "common/ieee802_11_defs.h"
24#include "common/ieee802_11_common.h"
03da66bd
JM		 25#include "common/wpa_ctrl.h"
26#include "radius/radius.h"
27#include "radius/radius_client.h"
6fc6879b 28#include "hostapd.h"
6fc6879b 29#include "beacon.h"
6fc6879b
JM		 30#include "ieee802_11_auth.h"
31#include "sta_info.h"
6fc6879b 32#include "ieee802_1x.h"
6226e38d 33#include "wpa_auth.h"
1057d78e 34#include "wmm.h"
6fc6879b
JM		 35#include "ap_list.h"
36#include "accounting.h"
6226e38d
JM		 37#include "ap_config.h"
38#include "ap_mlme.h"
39#include "ieee802_11.h"
6fc6879b
JM		 40
41
42u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid)
43{
44 u8 *pos = eid;
45 int i, num, count;
46
47 if (hapd->iface->current_rates == NULL)
48 return eid;
49
50 *pos++ = WLAN_EID_SUPP_RATES;
51 num = hapd->iface->num_rates;
52 if (num > 8) {
53 /* rest of the rates are encoded in Extended supported
54 * rates element */
55 num = 8;
56 }
57
58 *pos++ = num;
59 count = 0;
60 for (i = 0, count = 0; i < hapd->iface->num_rates && count < num;
61 i++) {
62 count++;
63 *pos = hapd->iface->current_rates[i].rate / 5;
64 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
65 *pos |= 0x80;
66 pos++;
67 }
68
69 return pos;
70}
71
72
73u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid)
74{
75 u8 *pos = eid;
76 int i, num, count;
77
78 if (hapd->iface->current_rates == NULL)
79 return eid;
80
81 num = hapd->iface->num_rates;
82 if (num <= 8)
83 return eid;
84 num -= 8;
85
86 *pos++ = WLAN_EID_EXT_SUPP_RATES;
87 *pos++ = num;
88 count = 0;
89 for (i = 0, count = 0; i < hapd->iface->num_rates && count < num + 8;
90 i++) {
91 count++;
92 if (count <= 8)
93 continue; /* already in SuppRates IE */
94 *pos = hapd->iface->current_rates[i].rate / 5;
95 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
96 *pos |= 0x80;
97 pos++;
98 }
99
100 return pos;
101}
102
103
104u16 hostapd_own_capab_info(struct hostapd_data *hapd, struct sta_info *sta,
105 int probe)
106{
107 int capab = WLAN_CAPABILITY_ESS;
108 int privacy;
109
110 if (hapd->iface->num_sta_no_short_preamble == 0 &&
111 hapd->iconf->preamble == SHORT_PREAMBLE)
112 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
113
114 privacy = hapd->conf->ssid.wep.keys_set;
115
116 if (hapd->conf->ieee802_1x &&
117 (hapd->conf->default_wep_key_len ||
118 hapd->conf->individual_wep_key_len))
119 privacy = 1;
120
121 if (hapd->conf->wpa)
122 privacy = 1;
123
124 if (sta) {
125 int policy, def_klen;
126 if (probe && sta->ssid_probe) {
127 policy = sta->ssid_probe->security_policy;
128 def_klen = sta->ssid_probe->wep.default_len;
129 } else {
130 policy = sta->ssid->security_policy;
131 def_klen = sta->ssid->wep.default_len;
132 }
133 privacy = policy != SECURITY_PLAINTEXT;
134 if (policy == SECURITY_IEEE_802_1X && def_klen == 0)
135 privacy = 0;
136 }
137
138 if (privacy)
139 capab |= WLAN_CAPABILITY_PRIVACY;
140
141 if (hapd->iface->current_mode &&
142 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G &&
143 hapd->iface->num_sta_no_short_slot_time == 0)
144 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
145
6fc6879b
JM		 146 return capab;
147}
148
149
5d22a1d5
JM		 150#ifdef CONFIG_IEEE80211W
151static u8 * hostapd_eid_assoc_comeback_time(struct hostapd_data *hapd,
152 struct sta_info *sta, u8 *eid)
153{
154 u8 *pos = eid;
45c94154
JM		 155 u32 timeout, tu;
156 struct os_time now, passed;
5d22a1d5 157
adddffd1
JM		 158 *pos++ = WLAN_EID_TIMEOUT_INTERVAL;
159 *pos++ = 5;
160 *pos++ = WLAN_TIMEOUT_ASSOC_COMEBACK;
45c94154
JM		 161 os_get_time(&now);
162 os_time_sub(&now, &sta->sa_query_start, &passed);
163 tu = (passed.sec * 1000000 + passed.usec) / 1024;
164 if (hapd->conf->assoc_sa_query_max_timeout > tu)
165 timeout = hapd->conf->assoc_sa_query_max_timeout - tu;
166 else
167 timeout = 0;
168 if (timeout < hapd->conf->assoc_sa_query_max_timeout)
169 timeout++; /* add some extra time for local timers */
5d22a1d5
JM		 170 WPA_PUT_LE32(pos, timeout);
171 pos += 4;
172
173 return pos;
174}
175#endif /* CONFIG_IEEE80211W */
176
177
6fc6879b
JM		 178void ieee802_11_print_ssid(char *buf, const u8 *ssid, u8 len)
179{
180 int i;
181 if (len > HOSTAPD_MAX_SSID_LEN)
182 len = HOSTAPD_MAX_SSID_LEN;
183 for (i = 0; i < len; i++) {
184 if (ssid[i] >= 32 && ssid[i] < 127)
185 buf[i] = ssid[i];
186 else
187 buf[i] = '.';
188 }
189 buf[len] = '\0';
190}
191
192
1c6e69cc
JM		 193/**
194 * ieee802_11_send_deauth - Send Deauthentication frame
195 * @hapd: hostapd BSS data
196 * @addr: Address of the destination STA
197 * @reason: Reason code for Deauthentication
198 */
b57e086c
JM		 199void ieee802_11_send_deauth(struct hostapd_data *hapd, const u8 *addr,
200 u16 reason)
6fc6879b
JM		 201{
202 struct ieee80211_mgmt mgmt;
6fc6879b
JM		 203
204 hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
205 HOSTAPD_LEVEL_DEBUG,
206 "deauthenticate - reason %d", reason);
6fc6879b
JM		 207 os_memset(&mgmt, 0, sizeof(mgmt));
208 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
209 WLAN_FC_STYPE_DEAUTH);
210 os_memcpy(mgmt.da, addr, ETH_ALEN);
211 os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
212 os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
213 mgmt.u.deauth.reason_code = host_to_le16(reason);
c90933d2
JM		 214 if (hapd->drv.send_mgmt_frame(hapd, &mgmt, IEEE80211_HDRLEN +
215 sizeof(mgmt.u.deauth)) < 0)
6fc6879b
JM		 216 perror("ieee802_11_send_deauth: send");
217}
218
219
6fc6879b 220static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta,
b57e086c
JM		 221 u16 auth_transaction, const u8 *challenge,
222 int iswep)
6fc6879b
JM		 223{
224 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
225 HOSTAPD_LEVEL_DEBUG,
226 "authentication (shared key, transaction %d)",
227 auth_transaction);
228
229 if (auth_transaction == 1) {
230 if (!sta->challenge) {
231 /* Generate a pseudo-random challenge */
232 u8 key[8];
233 time_t now;
234 int r;
235 sta->challenge = os_zalloc(WLAN_AUTH_CHALLENGE_LEN);
236 if (sta->challenge == NULL)
237 return WLAN_STATUS_UNSPECIFIED_FAILURE;
238
239 now = time(NULL);
240 r = random();
241 os_memcpy(key, &now, 4);
242 os_memcpy(key + 4, &r, 4);
8ef16831
JM		 243 rc4_skip(key, sizeof(key), 0,
244 sta->challenge, WLAN_AUTH_CHALLENGE_LEN);
6fc6879b
JM		 245 }
246 return 0;
247 }
248
249 if (auth_transaction != 3)
250 return WLAN_STATUS_UNSPECIFIED_FAILURE;
251
252 /* Transaction 3 */
253 if (!iswep || !sta->challenge || !challenge ||
254 os_memcmp(sta->challenge, challenge, WLAN_AUTH_CHALLENGE_LEN)) {
255 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
256 HOSTAPD_LEVEL_INFO,
257 "shared key authentication - invalid "
258 "challenge-response");
259 return WLAN_STATUS_CHALLENGE_FAIL;
260 }
261
262 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
263 HOSTAPD_LEVEL_DEBUG,
264 "authentication OK (shared key)");
265#ifdef IEEE80211_REQUIRE_AUTH_ACK
266 /* Station will be marked authenticated if it ACKs the
267 * authentication reply. */
268#else
269 sta->flags |= WLAN_STA_AUTH;
270 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
271#endif
272 os_free(sta->challenge);
273 sta->challenge = NULL;
274
275 return 0;
276}
277
278
279static void send_auth_reply(struct hostapd_data *hapd,
280 const u8 *dst, const u8 *bssid,
281 u16 auth_alg, u16 auth_transaction, u16 resp,
282 const u8 *ies, size_t ies_len)
283{
284 struct ieee80211_mgmt *reply;
285 u8 *buf;
286 size_t rlen;
287
288 rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth) + ies_len;
289 buf = os_zalloc(rlen);
290 if (buf == NULL)
291 return;
292
293 reply = (struct ieee80211_mgmt *) buf;
294 reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
295 WLAN_FC_STYPE_AUTH);
6fc6879b
JM		 296 os_memcpy(reply->da, dst, ETH_ALEN);
297 os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
298 os_memcpy(reply->bssid, bssid, ETH_ALEN);
299
300 reply->u.auth.auth_alg = host_to_le16(auth_alg);
301 reply->u.auth.auth_transaction = host_to_le16(auth_transaction);
302 reply->u.auth.status_code = host_to_le16(resp);
303
304 if (ies && ies_len)
305 os_memcpy(reply->u.auth.variable, ies, ies_len);
306
307 wpa_printf(MSG_DEBUG, "authentication reply: STA=" MACSTR
308 " auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu)",
309 MAC2STR(dst), auth_alg, auth_transaction,
310 resp, (unsigned long) ies_len);
c90933d2 311 if (hapd->drv.send_mgmt_frame(hapd, reply, rlen) < 0)
6fc6879b
JM		 312 perror("send_auth_reply: send");
313
314 os_free(buf);
315}
316
317
318#ifdef CONFIG_IEEE80211R
319static void handle_auth_ft_finish(void *ctx, const u8 *dst, const u8 *bssid,
320 u16 auth_transaction, u16 status,
321 const u8 *ies, size_t ies_len)
322{
323 struct hostapd_data *hapd = ctx;
324 struct sta_info *sta;
325
326 send_auth_reply(hapd, dst, bssid, WLAN_AUTH_FT, auth_transaction,
327 status, ies, ies_len);
328
329 if (status != WLAN_STATUS_SUCCESS)
330 return;
331
332 sta = ap_get_sta(hapd, dst);
333 if (sta == NULL)
334 return;
335
336 hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211,
337 HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)");
338 sta->flags |= WLAN_STA_AUTH;
339 mlme_authenticate_indication(hapd, sta);
340}
341#endif /* CONFIG_IEEE80211R */
342
343
b57e086c
JM		 344static void handle_auth(struct hostapd_data *hapd,
345 const struct ieee80211_mgmt *mgmt, size_t len)
6fc6879b
JM		 346{
347 u16 auth_alg, auth_transaction, status_code;
348 u16 resp = WLAN_STATUS_SUCCESS;
349 struct sta_info *sta = NULL;
350 int res;
351 u16 fc;
b57e086c 352 const u8 *challenge = NULL;
6fc6879b
JM		 353 u32 session_timeout, acct_interim_interval;
354 int vlan_id = 0;
355 u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN];
356 size_t resp_ies_len = 0;
357
358 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
359 printf("handle_auth - too short payload (len=%lu)\n",
360 (unsigned long) len);
361 return;
362 }
363
364 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
365 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
366 status_code = le_to_host16(mgmt->u.auth.status_code);
367 fc = le_to_host16(mgmt->frame_control);
368
369 if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) +
370 2 + WLAN_AUTH_CHALLENGE_LEN &&
371 mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE &&
372 mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN)
373 challenge = &mgmt->u.auth.variable[2];
374
375 wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d "
376 "auth_transaction=%d status_code=%d wep=%d%s",
377 MAC2STR(mgmt->sa), auth_alg, auth_transaction,
378 status_code, !!(fc & WLAN_FC_ISWEP),
379 challenge ? " challenge" : "");
380
6fc6879b
JM		 381 if (hapd->tkip_countermeasures) {
382 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
383 goto fail;
384 }
385
386 if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) &&
387 auth_alg == WLAN_AUTH_OPEN) ||
388#ifdef CONFIG_IEEE80211R
389 (hapd->conf->wpa &&
390 (hapd->conf->wpa_key_mgmt &
391 (WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_FT_PSK)) &&
392 auth_alg == WLAN_AUTH_FT) ||
393#endif /* CONFIG_IEEE80211R */
394 ((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) &&
395 auth_alg == WLAN_AUTH_SHARED_KEY))) {
396 printf("Unsupported authentication algorithm (%d)\n",
397 auth_alg);
398 resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
399 goto fail;
400 }
401
402 if (!(auth_transaction == 1 ||
403 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) {
404 printf("Unknown authentication transaction number (%d)\n",
405 auth_transaction);
406 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
407 goto fail;
408 }
409
410 if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) {
411 printf("Station " MACSTR " not allowed to authenticate.\n",
412 MAC2STR(mgmt->sa));
413 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
414 goto fail;
415 }
416
417 res = hostapd_allowed_address(hapd, mgmt->sa, (u8 *) mgmt, len,
418 &session_timeout,
419 &acct_interim_interval, &vlan_id);
420 if (res == HOSTAPD_ACL_REJECT) {
421 printf("Station " MACSTR " not allowed to authenticate.\n",
422 MAC2STR(mgmt->sa));
423 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
424 goto fail;
425 }
426 if (res == HOSTAPD_ACL_PENDING) {
427 wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR
428 " waiting for an external authentication",
429 MAC2STR(mgmt->sa));
430 /* Authentication code will re-send the authentication frame
431 * after it has received (and cached) information from the
432 * external source. */
433 return;
434 }
435
436 sta = ap_sta_add(hapd, mgmt->sa);
437 if (!sta) {
438 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
439 goto fail;
440 }
441
442 if (vlan_id > 0) {
443 if (hostapd_get_vlan_id_ifname(hapd->conf->vlan,
1066c1ee 444 vlan_id) == NULL) {
6fc6879b
JM		 445 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
446 HOSTAPD_LEVEL_INFO, "Invalid VLAN ID "
447 "%d received from RADIUS server",
448 vlan_id);
449 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
450 goto fail;
451 }
452 sta->vlan_id = vlan_id;
453 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
454 HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id);
455 }
456
457 sta->flags &= ~WLAN_STA_PREAUTH;
458 ieee802_1x_notify_pre_auth(sta->eapol_sm, 0);
459
5843e1c9 460 if (hapd->conf->acct_interim_interval == 0 && acct_interim_interval)
6fc6879b
JM		 461 sta->acct_interim_interval = acct_interim_interval;
462 if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT)
463 ap_sta_session_timeout(hapd, sta, session_timeout);
464 else
465 ap_sta_no_session_timeout(hapd, sta);
466
467 switch (auth_alg) {
468 case WLAN_AUTH_OPEN:
469 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
470 HOSTAPD_LEVEL_DEBUG,
471 "authentication OK (open system)");
472#ifdef IEEE80211_REQUIRE_AUTH_ACK
473 /* Station will be marked authenticated if it ACKs the
474 * authentication reply. */
475#else
476 sta->flags |= WLAN_STA_AUTH;
477 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
478 sta->auth_alg = WLAN_AUTH_OPEN;
479 mlme_authenticate_indication(hapd, sta);
480#endif
481 break;
482 case WLAN_AUTH_SHARED_KEY:
483 resp = auth_shared_key(hapd, sta, auth_transaction, challenge,
484 fc & WLAN_FC_ISWEP);
485 sta->auth_alg = WLAN_AUTH_SHARED_KEY;
486 mlme_authenticate_indication(hapd, sta);
487 if (sta->challenge && auth_transaction == 1) {
488 resp_ies[0] = WLAN_EID_CHALLENGE;
489 resp_ies[1] = WLAN_AUTH_CHALLENGE_LEN;
490 os_memcpy(resp_ies + 2, sta->challenge,
491 WLAN_AUTH_CHALLENGE_LEN);
492 resp_ies_len = 2 + WLAN_AUTH_CHALLENGE_LEN;
493 }
494 break;
495#ifdef CONFIG_IEEE80211R
496 case WLAN_AUTH_FT:
497 sta->auth_alg = WLAN_AUTH_FT;
498 if (sta->wpa_sm == NULL)
499 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
500 sta->addr);
501 if (sta->wpa_sm == NULL) {
502 wpa_printf(MSG_DEBUG, "FT: Failed to initialize WPA "
503 "state machine");
504 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
505 goto fail;
506 }
507 wpa_ft_process_auth(sta->wpa_sm, mgmt->bssid,
508 auth_transaction, mgmt->u.auth.variable,
509 len - IEEE80211_HDRLEN -
510 sizeof(mgmt->u.auth),
511 handle_auth_ft_finish, hapd);
512 /* handle_auth_ft_finish() callback will complete auth. */
513 return;
514#endif /* CONFIG_IEEE80211R */
515 }
516
517 fail:
518 send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg,
519 auth_transaction + 1, resp, resp_ies, resp_ies_len);
520}
521
522
d42a62b3
JM		 523static int hostapd_get_aid(struct hostapd_data *hapd, struct sta_info *sta)
524{
2991469c
JM		 525 int i, j = 32, aid;
526
d42a62b3
JM		 527 /* get a unique AID */
528 if (sta->aid > 0) {
529 wpa_printf(MSG_DEBUG, " old AID %d", sta->aid);
530 return 0;
531 }
532
2991469c
JM		 533 for (i = 0; i < AID_WORDS; i++) {
534 if (hapd->sta_aid[i] == (u32) -1)
535 continue;
536 for (j = 0; j < 32; j++) {
537 if (!(hapd->sta_aid[i] & BIT(j)))
538 break;
539 }
540 if (j < 32)
d42a62b3 541 break;
d42a62b3 542 }
2991469c
JM		 543 if (j == 32)
544 return -1;
545 aid = i * 32 + j + 1;
546 if (aid > 2007)
547 return -1;
d42a62b3 548
2991469c
JM		 549 sta->aid = aid;
550 hapd->sta_aid[i] |= BIT(j);
d42a62b3
JM		 551 wpa_printf(MSG_DEBUG, " new AID %d", sta->aid);
552 return 0;
553}
554
555
5586f500
JM		 556static u16 check_ssid(struct hostapd_data *hapd, struct sta_info *sta,
557 const u8 *ssid_ie, size_t ssid_ie_len)
6fc6879b 558{
5586f500
JM		 559 if (ssid_ie == NULL)
560 return WLAN_STATUS_UNSPECIFIED_FAILURE;
6fc6879b 561
5586f500
JM		 562 if (ssid_ie_len != hapd->conf->ssid.ssid_len ||
563 os_memcmp(ssid_ie, hapd->conf->ssid.ssid, ssid_ie_len) != 0) {
564 char ssid_txt[33];
565 ieee802_11_print_ssid(ssid_txt, ssid_ie, ssid_ie_len);
566 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
567 HOSTAPD_LEVEL_INFO,
568 "Station tried to associate with unknown SSID "
569 "'%s'", ssid_txt);
570 return WLAN_STATUS_UNSPECIFIED_FAILURE;
b0194fe0
JM		 571 }
572
5586f500
JM		 573 return WLAN_STATUS_SUCCESS;
574}
6fc6879b 575
6fc6879b 576
5586f500
JM		 577static u16 check_wmm(struct hostapd_data *hapd, struct sta_info *sta,
578 const u8 *wmm_ie, size_t wmm_ie_len)
579{
3ae0800c 580 sta->flags &= ~WLAN_STA_WMM;
5586f500
JM		 581 if (wmm_ie && hapd->conf->wmm_enabled) {
582 if (hostapd_eid_wmm_valid(hapd, wmm_ie, wmm_ie_len))
6fc6879b
JM		 583 hostapd_logger(hapd, sta->addr,
584 HOSTAPD_MODULE_WPA,
585 HOSTAPD_LEVEL_DEBUG,
3ae0800c 586 "invalid WMM element in association "
6fc6879b
JM		 587 "request");
588 else
3ae0800c 589 sta->flags |= WLAN_STA_WMM;
6fc6879b 590 }
5586f500
JM		 591 return WLAN_STATUS_SUCCESS;
592}
6fc6879b 593
5586f500
JM		 594
595static u16 copy_supp_rates(struct hostapd_data *hapd, struct sta_info *sta,
596 struct ieee802_11_elems *elems)
597{
598 if (!elems->supp_rates) {
599 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
6fc6879b
JM		 600 HOSTAPD_LEVEL_DEBUG,
601 "No supported rates element in AssocReq");
5586f500 602 return WLAN_STATUS_UNSPECIFIED_FAILURE;
6fc6879b
JM		 603 }
604
5586f500
JM		 605 if (elems->supp_rates_len > sizeof(sta->supported_rates)) {
606 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
6fc6879b
JM		 607 HOSTAPD_LEVEL_DEBUG,
608 "Invalid supported rates element length %d",
5586f500
JM		 609 elems->supp_rates_len);
610 return WLAN_STATUS_UNSPECIFIED_FAILURE;
6fc6879b
JM		 611 }
612
613 os_memset(sta->supported_rates, 0, sizeof(sta->supported_rates));
5586f500
JM		 614 os_memcpy(sta->supported_rates, elems->supp_rates,
615 elems->supp_rates_len);
616 sta->supported_rates_len = elems->supp_rates_len;
6fc6879b 617
5586f500
JM		 618 if (elems->ext_supp_rates) {
619 if (elems->supp_rates_len + elems->ext_supp_rates_len >
6fc6879b 620 sizeof(sta->supported_rates)) {
5586f500 621 hostapd_logger(hapd, sta->addr,
6fc6879b
JM		 622 HOSTAPD_MODULE_IEEE80211,
623 HOSTAPD_LEVEL_DEBUG,
624 "Invalid supported rates element length"
5586f500
JM		 625 " %d+%d", elems->supp_rates_len,
626 elems->ext_supp_rates_len);
627 return WLAN_STATUS_UNSPECIFIED_FAILURE;
6fc6879b
JM		 628 }
629
5586f500
JM		 630 os_memcpy(sta->supported_rates + elems->supp_rates_len,
631 elems->ext_supp_rates, elems->ext_supp_rates_len);
632 sta->supported_rates_len += elems->ext_supp_rates_len;
6fc6879b
JM		 633 }
634
5586f500
JM		 635 return WLAN_STATUS_SUCCESS;
636}
637
638
5586f500 639static u16 check_assoc_ies(struct hostapd_data *hapd, struct sta_info *sta,
b57e086c 640 const u8 *ies, size_t ies_len, int reassoc)
5586f500
JM		 641{
642 struct ieee802_11_elems elems;
643 u16 resp;
ba091c06 644 const u8 *wpa_ie;
5586f500
JM		 645 size_t wpa_ie_len;
646
647 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) {
648 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
649 HOSTAPD_LEVEL_INFO, "Station sent an invalid "
650 "association request");
651 return WLAN_STATUS_UNSPECIFIED_FAILURE;
652 }
653
654 resp = check_ssid(hapd, sta, elems.ssid, elems.ssid_len);
655 if (resp != WLAN_STATUS_SUCCESS)
656 return resp;
657 resp = check_wmm(hapd, sta, elems.wmm, elems.wmm_len);
658 if (resp != WLAN_STATUS_SUCCESS)
659 return resp;
660 resp = copy_supp_rates(hapd, sta, &elems);
661 if (resp != WLAN_STATUS_SUCCESS)
662 return resp;
d45354be 663#ifdef CONFIG_IEEE80211N
5586f500
JM		 664 resp = copy_sta_ht_capab(sta, elems.ht_capabilities,
665 elems.ht_capabilities_len);
666 if (resp != WLAN_STATUS_SUCCESS)
667 return resp;
d45354be 668#endif /* CONFIG_IEEE80211N */
5586f500 669
6fc6879b
JM		 670 if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) {
671 wpa_ie = elems.rsn_ie;
672 wpa_ie_len = elems.rsn_ie_len;
673 } else if ((hapd->conf->wpa & WPA_PROTO_WPA) &&
674 elems.wpa_ie) {
675 wpa_ie = elems.wpa_ie;
676 wpa_ie_len = elems.wpa_ie_len;
677 } else {
678 wpa_ie = NULL;
679 wpa_ie_len = 0;
680 }
5586f500 681
ad08c363 682#ifdef CONFIG_WPS
a8d05fca 683 sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS);
ad08c363
JM		 684 if (hapd->conf->wps_state && wpa_ie == NULL) {
685 if (elems.wps_ie) {
686 wpa_printf(MSG_DEBUG, "STA included WPS IE in "
687 "(Re)Association Request - assume WPS is "
688 "used");
689 sta->flags |= WLAN_STA_WPS;
eb76b7e3
JM		 690 wpabuf_free(sta->wps_ie);
691 sta->wps_ie = wpabuf_alloc_copy(elems.wps_ie + 4,
692 elems.wps_ie_len - 4);
ad08c363
JM		 693 } else {
694 wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE "
695 "in (Re)Association Request - possible WPS "
696 "use");
697 sta->flags |= WLAN_STA_MAYBE_WPS;
698 }
699 } else
700#endif /* CONFIG_WPS */
6fc6879b 701 if (hapd->conf->wpa && wpa_ie == NULL) {
5586f500
JM		 702 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
703 HOSTAPD_LEVEL_INFO,
704 "No WPA/RSN IE in association request");
705 return WLAN_STATUS_INVALID_IE;
6fc6879b
JM		 706 }
707
708 if (hapd->conf->wpa && wpa_ie) {
709 int res;
710 wpa_ie -= 2;
711 wpa_ie_len += 2;
712 if (sta->wpa_sm == NULL)
713 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
714 sta->addr);
715 if (sta->wpa_sm == NULL) {
5586f500
JM		 716 wpa_printf(MSG_WARNING, "Failed to initialize WPA "
717 "state machine");
718 return WLAN_STATUS_UNSPECIFIED_FAILURE;
6fc6879b
JM		 719 }
720 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
721 wpa_ie, wpa_ie_len,
722 elems.mdie, elems.mdie_len);
723 if (res == WPA_INVALID_GROUP)
724 resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
725 else if (res == WPA_INVALID_PAIRWISE)
726 resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
727 else if (res == WPA_INVALID_AKMP)
728 resp = WLAN_STATUS_AKMP_NOT_VALID;
729 else if (res == WPA_ALLOC_FAIL)
730 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
731#ifdef CONFIG_IEEE80211W
732 else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION)
9a9876bf 733 resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
6fc6879b 734 else if (res == WPA_INVALID_MGMT_GROUP_CIPHER)
9a9876bf 735 resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
6fc6879b
JM		 736#endif /* CONFIG_IEEE80211W */
737 else if (res == WPA_INVALID_MDIE)
738 resp = WLAN_STATUS_INVALID_MDIE;
739 else if (res != WPA_IE_OK)
740 resp = WLAN_STATUS_INVALID_IE;
741 if (resp != WLAN_STATUS_SUCCESS)
5586f500 742 return resp;
f3f7540e 743#ifdef CONFIG_IEEE80211W
45c94154
JM		 744 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
745 sta->sa_query_count > 0)
746 ap_check_sa_query_timeout(hapd, sta);
8f4617c6
JM		 747 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
748 (!reassoc || sta->auth_alg != WLAN_AUTH_FT)) {
5d22a1d5 749 /*
93b76319
JM		 750 * STA has already been associated with MFP and SA
751 * Query timeout has not been reached. Reject the
752 * association attempt temporarily and start SA Query,
753 * if one is not pending.
5d22a1d5
JM		 754 */
755
93b76319
JM		 756 if (sta->sa_query_count == 0)
757 ap_sta_start_sa_query(hapd, sta);
5d22a1d5 758
5586f500 759 return WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;
5d22a1d5
JM		 760 }
761
f3f7540e
JM		 762 if (wpa_auth_uses_mfp(sta->wpa_sm))
763 sta->flags |= WLAN_STA_MFP;
764 else
765 sta->flags &= ~WLAN_STA_MFP;
766#endif /* CONFIG_IEEE80211W */
6fc6879b
JM		 767
768#ifdef CONFIG_IEEE80211R
769 if (sta->auth_alg == WLAN_AUTH_FT) {
770 if (!reassoc) {
771 wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried "
772 "to use association (not "
773 "re-association) with FT auth_alg",
774 MAC2STR(sta->addr));
5586f500 775 return WLAN_STATUS_UNSPECIFIED_FAILURE;
6fc6879b
JM		 776 }
777
5586f500
JM		 778 resp = wpa_ft_validate_reassoc(sta->wpa_sm, ies,
779 ies_len);
6fc6879b 780 if (resp != WLAN_STATUS_SUCCESS)
5586f500 781 return resp;
6fc6879b
JM		 782 }
783#endif /* CONFIG_IEEE80211R */
5586f500 784
ff36ff00
JM		 785#ifdef CONFIG_IEEE80211N
786 if ((sta->flags & WLAN_STA_HT) &&
787 wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) {
5586f500
JM		 788 hostapd_logger(hapd, sta->addr,
789 HOSTAPD_MODULE_IEEE80211,
790 HOSTAPD_LEVEL_INFO,
791 "Station tried to use TKIP with HT "
792 "association");
793 return WLAN_STATUS_CIPHER_REJECTED_PER_POLICY;
ff36ff00
JM		 794 }
795#endif /* CONFIG_IEEE80211N */
a8d05fca
JM		 796 } else
797 wpa_auth_sta_no_wpa(sta->wpa_sm);
6fc6879b 798
5586f500
JM		 799 return WLAN_STATUS_SUCCESS;
800}
801
802
803static void send_deauth(struct hostapd_data *hapd, const u8 *addr,
804 u16 reason_code)
805{
806 int send_len;
807 struct ieee80211_mgmt reply;
808
809 os_memset(&reply, 0, sizeof(reply));
810 reply.frame_control =
811 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_DEAUTH);
812 os_memcpy(reply.da, addr, ETH_ALEN);
813 os_memcpy(reply.sa, hapd->own_addr, ETH_ALEN);
814 os_memcpy(reply.bssid, hapd->own_addr, ETH_ALEN);
815
816 send_len = IEEE80211_HDRLEN + sizeof(reply.u.deauth);
817 reply.u.deauth.reason_code = host_to_le16(reason_code);
818
c90933d2 819 if (hapd->drv.send_mgmt_frame(hapd, &reply, send_len) < 0)
5586f500
JM		 820 wpa_printf(MSG_INFO, "Failed to send deauth: %s",
821 strerror(errno));
822}
823
824
825static void send_assoc_resp(struct hostapd_data *hapd, struct sta_info *sta,
b57e086c 826 u16 status_code, int reassoc, const u8 *ies,
5586f500
JM		 827 size_t ies_len)
828{
829 int send_len;
830 u8 buf[sizeof(struct ieee80211_mgmt) + 1024];
831 struct ieee80211_mgmt *reply;
832 u8 *p;
833
834 os_memset(buf, 0, sizeof(buf));
835 reply = (struct ieee80211_mgmt *) buf;
836 reply->frame_control =
837 IEEE80211_FC(WLAN_FC_TYPE_MGMT,
838 (reassoc ? WLAN_FC_STYPE_REASSOC_RESP :
839 WLAN_FC_STYPE_ASSOC_RESP));
840 os_memcpy(reply->da, sta->addr, ETH_ALEN);
841 os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
842 os_memcpy(reply->bssid, hapd->own_addr, ETH_ALEN);
843
844 send_len = IEEE80211_HDRLEN;
845 send_len += sizeof(reply->u.assoc_resp);
846 reply->u.assoc_resp.capab_info =
847 host_to_le16(hostapd_own_capab_info(hapd, sta, 0));
848 reply->u.assoc_resp.status_code = host_to_le16(status_code);
849 reply->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0)
850 | BIT(14) | BIT(15));
851 /* Supported rates */
852 p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable);
853 /* Extended supported rates */
854 p = hostapd_eid_ext_supp_rates(hapd, p);
855 if (sta->flags & WLAN_STA_WMM)
856 p = hostapd_eid_wmm(hapd, p);
857
d45354be 858#ifdef CONFIG_IEEE80211N
5586f500
JM		 859 p = hostapd_eid_ht_capabilities(hapd, p);
860 p = hostapd_eid_ht_operation(hapd, p);
d45354be 861#endif /* CONFIG_IEEE80211N */
5586f500
JM		 862
863#ifdef CONFIG_IEEE80211R
864 if (status_code == WLAN_STATUS_SUCCESS) {
865 /* IEEE 802.11r: Mobility Domain Information, Fast BSS
866 * Transition Information, RSN, [RIC Response] */
867 p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p,
868 buf + sizeof(buf) - p,
869 sta->auth_alg, ies, ies_len);
870 }
871#endif /* CONFIG_IEEE80211R */
872
873#ifdef CONFIG_IEEE80211W
874 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY)
875 p = hostapd_eid_assoc_comeback_time(hapd, sta, p);
876#endif /* CONFIG_IEEE80211W */
877
878 send_len += p - reply->u.assoc_resp.variable;
879
c90933d2 880 if (hapd->drv.send_mgmt_frame(hapd, reply, send_len) < 0)
5586f500
JM		 881 wpa_printf(MSG_INFO, "Failed to send assoc resp: %s",
882 strerror(errno));
883}
884
885
886static void handle_assoc(struct hostapd_data *hapd,
b57e086c
JM		 887 const struct ieee80211_mgmt *mgmt, size_t len,
888 int reassoc)
5586f500
JM		 889{
890 u16 capab_info, listen_interval;
891 u16 resp = WLAN_STATUS_SUCCESS;
b57e086c 892 const u8 *pos;
5586f500
JM		 893 int left, i;
894 struct sta_info *sta;
895
896 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
897 sizeof(mgmt->u.assoc_req))) {
898 printf("handle_assoc(reassoc=%d) - too short payload (len=%lu)"
899 "\n", reassoc, (unsigned long) len);
900 return;
901 }
902
903 if (reassoc) {
904 capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info);
905 listen_interval = le_to_host16(
906 mgmt->u.reassoc_req.listen_interval);
907 wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR
908 " capab_info=0x%02x listen_interval=%d current_ap="
909 MACSTR,
910 MAC2STR(mgmt->sa), capab_info, listen_interval,
911 MAC2STR(mgmt->u.reassoc_req.current_ap));
912 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req));
913 pos = mgmt->u.reassoc_req.variable;
914 } else {
915 capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
916 listen_interval = le_to_host16(
917 mgmt->u.assoc_req.listen_interval);
918 wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR
919 " capab_info=0x%02x listen_interval=%d",
920 MAC2STR(mgmt->sa), capab_info, listen_interval);
921 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req));
922 pos = mgmt->u.assoc_req.variable;
923 }
924
925 sta = ap_get_sta(hapd, mgmt->sa);
926#ifdef CONFIG_IEEE80211R
927 if (sta && sta->auth_alg == WLAN_AUTH_FT &&
928 (sta->flags & WLAN_STA_AUTH) == 0) {
929 wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate "
930 "prior to authentication since it is using "
931 "over-the-DS FT", MAC2STR(mgmt->sa));
932 } else
933#endif /* CONFIG_IEEE80211R */
934 if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
935 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
936 HOSTAPD_LEVEL_INFO, "Station tried to "
937 "associate before authentication "
938 "(aid=%d flags=0x%x)",
939 sta ? sta->aid : -1,
940 sta ? sta->flags : 0);
941 send_deauth(hapd, mgmt->sa,
942 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA);
943 return;
944 }
945
946 if (hapd->tkip_countermeasures) {
947 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
948 goto fail;
949 }
950
951 if (listen_interval > hapd->conf->max_listen_interval) {
952 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
953 HOSTAPD_LEVEL_DEBUG,
954 "Too large Listen Interval (%d)",
955 listen_interval);
956 resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE;
957 goto fail;
958 }
959
960 /* followed by SSID and Supported rates; and HT capabilities if 802.11n
961 * is used */
962 resp = check_assoc_ies(hapd, sta, pos, left, reassoc);
963 if (resp != WLAN_STATUS_SUCCESS)
964 goto fail;
965
966 if (hostapd_get_aid(hapd, sta) < 0) {
967 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
968 HOSTAPD_LEVEL_INFO, "No room for more AIDs");
969 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
970 goto fail;
971 }
972
973 sta->capability = capab_info;
974 sta->listen_interval = listen_interval;
975
6fc6879b
JM		 976 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
977 sta->flags |= WLAN_STA_NONERP;
978 for (i = 0; i < sta->supported_rates_len; i++) {
979 if ((sta->supported_rates[i] & 0x7f) > 22) {
980 sta->flags &= ~WLAN_STA_NONERP;
981 break;
982 }
983 }
984 if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) {
985 sta->nonerp_set = 1;
986 hapd->iface->num_sta_non_erp++;
987 if (hapd->iface->num_sta_non_erp == 1)
988 ieee802_11_set_beacons(hapd->iface);
989 }
990
991 if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) &&
992 !sta->no_short_slot_time_set) {
993 sta->no_short_slot_time_set = 1;
994 hapd->iface->num_sta_no_short_slot_time++;
995 if (hapd->iface->current_mode->mode ==
996 HOSTAPD_MODE_IEEE80211G &&
997 hapd->iface->num_sta_no_short_slot_time == 1)
998 ieee802_11_set_beacons(hapd->iface);
999 }
1000
1001 if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1002 sta->flags |= WLAN_STA_SHORT_PREAMBLE;
1003 else
1004 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
1005
1006 if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
1007 !sta->no_short_preamble_set) {
1008 sta->no_short_preamble_set = 1;
1009 hapd->iface->num_sta_no_short_preamble++;
1010 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
1011 && hapd->iface->num_sta_no_short_preamble == 1)
1012 ieee802_11_set_beacons(hapd->iface);
1013 }
1014
d45354be 1015#ifdef CONFIG_IEEE80211N
5586f500 1016 update_ht_state(hapd, sta);
d45354be 1017#endif /* CONFIG_IEEE80211N */
de9289c8 1018
6fc6879b
JM		 1019 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1020 HOSTAPD_LEVEL_DEBUG,
1021 "association OK (aid %d)", sta->aid);
1022 /* Station will be marked associated, after it acknowledges AssocResp
1023 */
1024
6f5c8dbd
JM		 1025#ifdef CONFIG_IEEE80211W
1026 if ((sta->flags & WLAN_STA_MFP) && sta->sa_query_timed_out) {
1027 wpa_printf(MSG_DEBUG, "Allowing %sassociation after timed out "
1028 "SA Query procedure", reassoc ? "re" : "");
1029 /* TODO: Send a protected Disassociate frame to the STA using
1030 * the old key and Reason Code "Previous Authentication no
1031 * longer valid". Make sure this is only sent protected since
1032 * unprotected frame would be received by the STA that is now
1033 * trying to associate.
1034 */
1035 }
1036#endif /* CONFIG_IEEE80211W */
1037
1e858f69
JM		 1038 if (reassoc) {
1039 os_memcpy(sta->previous_ap, mgmt->u.reassoc_req.current_ap,
1040 ETH_ALEN);
1041 }
1042
6fc6879b
JM		 1043 if (sta->last_assoc_req)
1044 os_free(sta->last_assoc_req);
1045 sta->last_assoc_req = os_malloc(len);
1046 if (sta->last_assoc_req)
1047 os_memcpy(sta->last_assoc_req, mgmt, len);
1048
1049 /* Make sure that the previously registered inactivity timer will not
1050 * remove the STA immediately. */
1051 sta->timeout_next = STA_NULLFUNC;
1052
1053 fail:
5586f500 1054 send_assoc_resp(hapd, sta, resp, reassoc, pos, left);
6fc6879b
JM		 1055}
1056
1057
6fc6879b 1058static void handle_disassoc(struct hostapd_data *hapd,
f8b1f695 1059 const struct ieee80211_mgmt *mgmt, size_t len)
6fc6879b
JM		 1060{
1061 struct sta_info *sta;
1062
1063 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) {
1064 printf("handle_disassoc - too short payload (len=%lu)\n",
1065 (unsigned long) len);
1066 return;
1067 }
1068
1069 wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d",
1070 MAC2STR(mgmt->sa),
1071 le_to_host16(mgmt->u.disassoc.reason_code));
1072
6fc6879b
JM		 1073 sta = ap_get_sta(hapd, mgmt->sa);
1074 if (sta == NULL) {
1075 printf("Station " MACSTR " trying to disassociate, but it "
1076 "is not associated.\n", MAC2STR(mgmt->sa));
1077 return;
1078 }
1079
1080 sta->flags &= ~WLAN_STA_ASSOC;
20bd9547
JM		 1081 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED MACSTR,
1082 MAC2STR(sta->addr));
6fc6879b
JM		 1083 wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
1084 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1085 HOSTAPD_LEVEL_INFO, "disassociated");
1086 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1087 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1088 /* Stop Accounting and IEEE 802.1X sessions, but leave the STA
1089 * authenticated. */
1090 accounting_sta_stop(hapd, sta);
1091 ieee802_1x_free_station(sta);
bdee6fce 1092 hapd->drv.sta_remove(hapd, sta->addr);
6fc6879b
JM		 1093
1094 if (sta->timeout_next == STA_NULLFUNC ||
1095 sta->timeout_next == STA_DISASSOC) {
1096 sta->timeout_next = STA_DEAUTH;
1097 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1098 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
1099 hapd, sta);
1100 }
1101
1102 mlme_disassociate_indication(
1103 hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code));
1104}
1105
1106
1107static void handle_deauth(struct hostapd_data *hapd,
f8b1f695 1108 const struct ieee80211_mgmt *mgmt, size_t len)
6fc6879b
JM		 1109{
1110 struct sta_info *sta;
1111
1112 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) {
1113 printf("handle_deauth - too short payload (len=%lu)\n",
1114 (unsigned long) len);
1115 return;
1116 }
1117
1118 wpa_printf(MSG_DEBUG, "deauthentication: STA=" MACSTR
1119 " reason_code=%d",
1120 MAC2STR(mgmt->sa),
1121 le_to_host16(mgmt->u.deauth.reason_code));
1122
6fc6879b
JM		 1123 sta = ap_get_sta(hapd, mgmt->sa);
1124 if (sta == NULL) {
1125 printf("Station " MACSTR " trying to deauthenticate, but it "
1126 "is not authenticated.\n", MAC2STR(mgmt->sa));
1127 return;
1128 }
1129
1130 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
20bd9547
JM		 1131 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED MACSTR,
1132 MAC2STR(sta->addr));
6fc6879b
JM		 1133 wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
1134 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1135 HOSTAPD_LEVEL_DEBUG, "deauthenticated");
1136 mlme_deauthenticate_indication(
1137 hapd, sta, le_to_host16(mgmt->u.deauth.reason_code));
1138 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1139 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1140 ap_free_sta(hapd, sta);
1141}
1142
1143
1144static void handle_beacon(struct hostapd_data *hapd,
b57e086c 1145 const struct ieee80211_mgmt *mgmt, size_t len,
6fc6879b
JM		 1146 struct hostapd_frame_info *fi)
1147{
1148 struct ieee802_11_elems elems;
1149
1150 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) {
1151 printf("handle_beacon - too short payload (len=%lu)\n",
1152 (unsigned long) len);
1153 return;
1154 }
1155
3d536eb4 1156 (void) ieee802_11_parse_elems(mgmt->u.beacon.variable,
6fc6879b
JM		 1157 len - (IEEE80211_HDRLEN +
1158 sizeof(mgmt->u.beacon)), &elems,
1159 0);
1160
6fc6879b
JM		 1161 ap_list_process_beacon(hapd->iface, mgmt, &elems, fi);
1162}
1163
1164
5d22a1d5 1165#ifdef CONFIG_IEEE80211W
88b4b424
JM		 1166
1167/* MLME-SAQuery.request */
1168void ieee802_11_send_sa_query_req(struct hostapd_data *hapd,
1169 const u8 *addr, const u8 *trans_id)
1170{
1171 struct ieee80211_mgmt mgmt;
1172 u8 *end;
1173
92305c5d
JM		 1174 wpa_printf(MSG_DEBUG, "IEEE 802.11: Sending SA Query Request to "
1175 MACSTR, MAC2STR(addr));
1176 wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID",
1177 trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1178
88b4b424
JM		 1179 os_memset(&mgmt, 0, sizeof(mgmt));
1180 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1181 WLAN_FC_STYPE_ACTION);
1182 os_memcpy(mgmt.da, addr, ETH_ALEN);
1183 os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
1184 os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
1185 mgmt.u.action.category = WLAN_ACTION_SA_QUERY;
1186 mgmt.u.action.u.sa_query_req.action = WLAN_SA_QUERY_REQUEST;
1187 os_memcpy(mgmt.u.action.u.sa_query_req.trans_id, trans_id,
1188 WLAN_SA_QUERY_TR_ID_LEN);
1189 end = mgmt.u.action.u.sa_query_req.trans_id + WLAN_SA_QUERY_TR_ID_LEN;
c90933d2 1190 if (hapd->drv.send_mgmt_frame(hapd, &mgmt, end - (u8 *) &mgmt) < 0)
88b4b424
JM		 1191 perror("ieee802_11_send_sa_query_req: send");
1192}
1193
1194
358c3691
JM		 1195static void hostapd_sa_query_request(struct hostapd_data *hapd,
1196 const struct ieee80211_mgmt *mgmt)
1197{
1198 struct sta_info *sta;
1199 struct ieee80211_mgmt resp;
1200 u8 *end;
1201
1202 wpa_printf(MSG_DEBUG, "IEEE 802.11: Received SA Query Request from "
1203 MACSTR, MAC2STR(mgmt->sa));
1204 wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID",
1205 mgmt->u.action.u.sa_query_resp.trans_id,
1206 WLAN_SA_QUERY_TR_ID_LEN);
1207
1208 sta = ap_get_sta(hapd, mgmt->sa);
1209 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
1210 wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignore SA Query Request "
1211 "from unassociated STA " MACSTR, MAC2STR(mgmt->sa));
1212 return;
1213 }
1214
1215 wpa_printf(MSG_DEBUG, "IEEE 802.11: Sending SA Query Response to "
1216 MACSTR, MAC2STR(mgmt->sa));
1217
1218 os_memset(&resp, 0, sizeof(resp));
1219 resp.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1220 WLAN_FC_STYPE_ACTION);
1221 os_memcpy(resp.da, mgmt->sa, ETH_ALEN);
1222 os_memcpy(resp.sa, hapd->own_addr, ETH_ALEN);
1223 os_memcpy(resp.bssid, hapd->own_addr, ETH_ALEN);
1224 resp.u.action.category = WLAN_ACTION_SA_QUERY;
1225 resp.u.action.u.sa_query_req.action = WLAN_SA_QUERY_RESPONSE;
1226 os_memcpy(resp.u.action.u.sa_query_req.trans_id,
1227 mgmt->u.action.u.sa_query_req.trans_id,
1228 WLAN_SA_QUERY_TR_ID_LEN);
1229 end = resp.u.action.u.sa_query_req.trans_id + WLAN_SA_QUERY_TR_ID_LEN;
1230 if (hapd->drv.send_mgmt_frame(hapd, &resp, end - (u8 *) &resp) < 0)
1231 perror("hostapd_sa_query_request: send");
1232}
1233
1234
93b76319 1235static void hostapd_sa_query_action(struct hostapd_data *hapd,
b57e086c
JM		 1236 const struct ieee80211_mgmt *mgmt,
1237 size_t len)
5d22a1d5
JM		 1238{
1239 struct sta_info *sta;
b57e086c 1240 const u8 *end;
5d22a1d5
JM		 1241 int i;
1242
93b76319
JM		 1243 end = mgmt->u.action.u.sa_query_resp.trans_id +
1244 WLAN_SA_QUERY_TR_ID_LEN;
5d22a1d5 1245 if (((u8 *) mgmt) + len < end) {
93b76319 1246 wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short SA Query Action "
5d22a1d5
JM		 1247 "frame (len=%lu)", (unsigned long) len);
1248 return;
1249 }
1250
358c3691
JM		 1251 if (mgmt->u.action.u.sa_query_resp.action == WLAN_SA_QUERY_REQUEST) {
1252 hostapd_sa_query_request(hapd, mgmt);
1253 return;
1254 }
1255
93b76319
JM		 1256 if (mgmt->u.action.u.sa_query_resp.action != WLAN_SA_QUERY_RESPONSE) {
1257 wpa_printf(MSG_DEBUG, "IEEE 802.11: Unexpected SA Query "
1258 "Action %d", mgmt->u.action.u.sa_query_resp.action);
5d22a1d5
JM		 1259 return;
1260 }
1261
92305c5d
JM		 1262 wpa_printf(MSG_DEBUG, "IEEE 802.11: Received SA Query Response from "
1263 MACSTR, MAC2STR(mgmt->sa));
1264 wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID",
1265 mgmt->u.action.u.sa_query_resp.trans_id,
1266 WLAN_SA_QUERY_TR_ID_LEN);
1267
93b76319 1268 /* MLME-SAQuery.confirm */
5d22a1d5
JM		 1269
1270 sta = ap_get_sta(hapd, mgmt->sa);
93b76319 1271 if (sta == NULL || sta->sa_query_trans_id == NULL) {
5d22a1d5 1272 wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching STA with "
93b76319 1273 "pending SA Query request found");
5d22a1d5
JM		 1274 return;
1275 }
1276
93b76319
JM		 1277 for (i = 0; i < sta->sa_query_count; i++) {
1278 if (os_memcmp(sta->sa_query_trans_id +
1279 i * WLAN_SA_QUERY_TR_ID_LEN,
1280 mgmt->u.action.u.sa_query_resp.trans_id,
1281 WLAN_SA_QUERY_TR_ID_LEN) == 0)
5d22a1d5
JM		 1282 break;
1283 }
1284
93b76319
JM		 1285 if (i >= sta->sa_query_count) {
1286 wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching SA Query "
5d22a1d5
JM		 1287 "transaction identifier found");
1288 return;
1289 }
1290
1291 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
93b76319
JM		 1292 HOSTAPD_LEVEL_DEBUG,
1293 "Reply to pending SA Query received");
1294 ap_sta_stop_sa_query(hapd, sta);
5d22a1d5 1295}
5d22a1d5
JM		 1296
1297
c4e281fd
JM		 1298static int robust_action_frame(u8 category)
1299{
1300 return category != WLAN_ACTION_PUBLIC &&
1301 category != WLAN_ACTION_HT;
1302}
9f64b827 1303#endif /* CONFIG_IEEE80211W */
c4e281fd
JM		 1304
1305
6fc6879b 1306static void handle_action(struct hostapd_data *hapd,
b57e086c 1307 const struct ieee80211_mgmt *mgmt, size_t len)
6fc6879b 1308{
c4e281fd
JM		 1309 struct sta_info *sta;
1310
6fc6879b
JM		 1311 if (len < IEEE80211_HDRLEN + 1) {
1312 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1313 HOSTAPD_LEVEL_DEBUG,
1314 "handle_action - too short payload (len=%lu)",
1315 (unsigned long) len);
1316 return;
1317 }
1318
c4e281fd
JM		 1319 sta = ap_get_sta(hapd, mgmt->sa);
1320#ifdef CONFIG_IEEE80211W
1321 if (sta && (sta->flags & WLAN_STA_MFP) &&
1322 !(mgmt->frame_control & host_to_le16(WLAN_FC_ISWEP) &&
1323 robust_action_frame(mgmt->u.action.category))) {
1324 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1325 HOSTAPD_LEVEL_DEBUG,
1326 "Dropped unprotected Robust Action frame from "
1327 "an MFP STA");
1328 return;
1329 }
1330#endif /* CONFIG_IEEE80211W */
1331
6fc6879b
JM		 1332 switch (mgmt->u.action.category) {
1333#ifdef CONFIG_IEEE80211R
1334 case WLAN_ACTION_FT:
1335 {
6fc6879b
JM		 1336 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
1337 wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored FT Action "
1338 "frame from unassociated STA " MACSTR,
1339 MAC2STR(mgmt->sa));
1340 return;
1341 }
1342
1343 if (wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action,
1344 len - IEEE80211_HDRLEN))
1345 break;
1346
1347 return;
1348 }
1349#endif /* CONFIG_IEEE80211R */
c2a71408 1350 case WLAN_ACTION_WMM:
3ae0800c 1351 hostapd_wmm_action(hapd, mgmt, len);
6fc6879b 1352 return;
5d22a1d5 1353#ifdef CONFIG_IEEE80211W
93b76319
JM		 1354 case WLAN_ACTION_SA_QUERY:
1355 hostapd_sa_query_action(hapd, mgmt, len);
5d22a1d5
JM		 1356 return;
1357#endif /* CONFIG_IEEE80211W */
c706d5aa
JM		 1358 case WLAN_ACTION_PUBLIC:
1359 if (hapd->public_action_cb) {
1360 hapd->public_action_cb(hapd->public_action_cb_ctx,
1361 (u8 *) mgmt, len,
1362 hapd->iface->freq);
1363 return;
1364 }
1365 break;
6fc6879b
JM		 1366 }
1367
1368 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1369 HOSTAPD_LEVEL_DEBUG,
1370 "handle_action - unknown action category %d or invalid "
1371 "frame",
1372 mgmt->u.action.category);
1373 if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) &&
1374 !(mgmt->sa[0] & 0x01)) {
b57e086c
JM		 1375 struct ieee80211_mgmt *resp;
1376
6fc6879b
JM		 1377 /*
1378 * IEEE 802.11-REVma/D9.0 - 7.3.1.11
1379 * Return the Action frame to the source without change
1380 * except that MSB of the Category set to 1.
1381 */
1382 wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action "
1383 "frame back to sender");
b57e086c
JM		 1384 resp = os_malloc(len);
1385 if (resp == NULL)
1386 return;
1387 os_memcpy(resp, mgmt, len);
1388 os_memcpy(resp->da, resp->sa, ETH_ALEN);
1389 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
1390 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
1391 resp->u.action.category |= 0x80;
1392
c90933d2 1393 hapd->drv.send_mgmt_frame(hapd, resp, len);
b57e086c 1394 os_free(resp);
6fc6879b
JM		 1395 }
1396}
1397
1398
1399/**
1400 * ieee802_11_mgmt - process incoming IEEE 802.11 management frames
1401 * @hapd: hostapd BSS data structure (the BSS to which the management frame was
1402 * sent to)
1403 * @buf: management frame data (starting from IEEE 802.11 header)
1404 * @len: length of frame data in octets
a17df5fb 1405 * @fi: meta data about received frame (signal level, etc.)
6fc6879b
JM		 1406 *
1407 * Process all incoming IEEE 802.11 management frames. This will be called for
1408 * each frame received from the kernel driver through wlan#ap interface. In
1409 * addition, it can be called to re-inserted pending frames (e.g., when using
1410 * external RADIUS server as an MAC ACL).
1411 */
b57e086c 1412void ieee802_11_mgmt(struct hostapd_data *hapd, const u8 *buf, size_t len,
6fc6879b
JM		 1413 struct hostapd_frame_info *fi)
1414{
f8b1f695 1415 struct ieee80211_mgmt *mgmt;
6fc6879b 1416 int broadcast;
f8b1f695
JM		 1417 u16 fc, stype;
1418
1419 mgmt = (struct ieee80211_mgmt *) buf;
1420 fc = le_to_host16(mgmt->frame_control);
1421 stype = WLAN_FC_GET_STYPE(fc);
6fc6879b
JM		 1422
1423 if (stype == WLAN_FC_STYPE_BEACON) {
1424 handle_beacon(hapd, mgmt, len, fi);
1425 return;
1426 }
1427
6fc6879b
JM		 1428 broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff &&
1429 mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff &&
1430 mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff;
1431
1432 if (!broadcast &&
fe2c5241 1433 os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) {
6fc6879b
JM		 1434 printf("MGMT: BSSID=" MACSTR " not our address\n",
1435 MAC2STR(mgmt->bssid));
1436 return;
1437 }
1438
1439
1440 if (stype == WLAN_FC_STYPE_PROBE_REQ) {
1441 handle_probe_req(hapd, mgmt, len);
1442 return;
1443 }
1444
1445 if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) {
1446 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1447 HOSTAPD_LEVEL_DEBUG,
1448 "MGMT: DA=" MACSTR " not our address",
1449 MAC2STR(mgmt->da));
1450 return;
1451 }
1452
1453 switch (stype) {
1454 case WLAN_FC_STYPE_AUTH:
1455 wpa_printf(MSG_DEBUG, "mgmt::auth");
1456 handle_auth(hapd, mgmt, len);
1457 break;
1458 case WLAN_FC_STYPE_ASSOC_REQ:
1459 wpa_printf(MSG_DEBUG, "mgmt::assoc_req");
1460 handle_assoc(hapd, mgmt, len, 0);
1461 break;
6fc6879b
JM		 1462 case WLAN_FC_STYPE_REASSOC_REQ:
1463 wpa_printf(MSG_DEBUG, "mgmt::reassoc_req");
1464 handle_assoc(hapd, mgmt, len, 1);
1465 break;
1466 case WLAN_FC_STYPE_DISASSOC:
1467 wpa_printf(MSG_DEBUG, "mgmt::disassoc");
1468 handle_disassoc(hapd, mgmt, len);
1469 break;
1470 case WLAN_FC_STYPE_DEAUTH:
1471 wpa_printf(MSG_DEBUG, "mgmt::deauth");
1472 handle_deauth(hapd, mgmt, len);
1473 break;
1474 case WLAN_FC_STYPE_ACTION:
1475 wpa_printf(MSG_DEBUG, "mgmt::action");
1476 handle_action(hapd, mgmt, len);
1477 break;
1478 default:
1479 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1480 HOSTAPD_LEVEL_DEBUG,
1481 "unknown mgmt frame subtype %d", stype);
1482 break;
1483 }
1484}
1485
1486
1487static void handle_auth_cb(struct hostapd_data *hapd,
f8b1f695 1488 const struct ieee80211_mgmt *mgmt,
6fc6879b
JM		 1489 size_t len, int ok)
1490{
1491 u16 auth_alg, auth_transaction, status_code;
1492 struct sta_info *sta;
1493
1494 if (!ok) {
1495 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1496 HOSTAPD_LEVEL_NOTICE,
1497 "did not acknowledge authentication response");
1498 return;
1499 }
1500
1501 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
1502 printf("handle_auth_cb - too short payload (len=%lu)\n",
1503 (unsigned long) len);
1504 return;
1505 }
1506
1507 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
1508 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
1509 status_code = le_to_host16(mgmt->u.auth.status_code);
1510
1511 sta = ap_get_sta(hapd, mgmt->da);
1512 if (!sta) {
1513 printf("handle_auth_cb: STA " MACSTR " not found\n",
1514 MAC2STR(mgmt->da));
1515 return;
1516 }
1517
1518 if (status_code == WLAN_STATUS_SUCCESS &&
1519 ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
1520 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
1521 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1522 HOSTAPD_LEVEL_INFO, "authenticated");
1523 sta->flags |= WLAN_STA_AUTH;
1524 }
1525}
1526
1527
1528static void handle_assoc_cb(struct hostapd_data *hapd,
f8b1f695 1529 const struct ieee80211_mgmt *mgmt,
6fc6879b
JM		 1530 size_t len, int reassoc, int ok)
1531{
1532 u16 status;
1533 struct sta_info *sta;
1534 int new_assoc = 1;
fc4e2d95 1535 struct ieee80211_ht_capabilities ht_cap;
6fc6879b
JM		 1536
1537 if (!ok) {
1538 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1539 HOSTAPD_LEVEL_DEBUG,
1540 "did not acknowledge association response");
1541 return;
1542 }
1543
1544 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) :
1545 sizeof(mgmt->u.assoc_resp))) {
1546 printf("handle_assoc_cb(reassoc=%d) - too short payload "
1547 "(len=%lu)\n", reassoc, (unsigned long) len);
1548 return;
1549 }
1550
1551 if (reassoc)
1552 status = le_to_host16(mgmt->u.reassoc_resp.status_code);
1553 else
1554 status = le_to_host16(mgmt->u.assoc_resp.status_code);
1555
1556 sta = ap_get_sta(hapd, mgmt->da);
1557 if (!sta) {
1558 printf("handle_assoc_cb: STA " MACSTR " not found\n",
1559 MAC2STR(mgmt->da));
1560 return;
1561 }
1562
1563 if (status != WLAN_STATUS_SUCCESS)
1564 goto fail;
1565
1566 /* Stop previous accounting session, if one is started, and allocate
1567 * new session id for the new session. */
1568 accounting_sta_stop(hapd, sta);
6fc6879b
JM		 1569
1570 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1571 HOSTAPD_LEVEL_INFO,
2fc98d02
JM		 1572 "associated (aid %d)",
1573 sta->aid);
6fc6879b
JM		 1574
1575 if (sta->flags & WLAN_STA_ASSOC)
1576 new_assoc = 0;
1577 sta->flags |= WLAN_STA_ASSOC;
ef580012
JM		 1578 if ((!hapd->conf->ieee802_1x && !hapd->conf->wpa) ||
1579 sta->auth_alg == WLAN_AUTH_FT) {
1580 /*
1581 * Open, static WEP, or FT protocol; no separate authorization
1582 * step.
1583 */
515cf93f 1584 sta->flags |= WLAN_STA_AUTHORIZED;
20bd9547
JM		 1585 wpa_msg(hapd->msg_ctx, MSG_INFO,
1586 AP_STA_CONNECTED MACSTR, MAC2STR(sta->addr));
515cf93f 1587 }
6fc6879b
JM		 1588
1589 if (reassoc)
1590 mlme_reassociate_indication(hapd, sta);
1591 else
1592 mlme_associate_indication(hapd, sta);
1593
5d22a1d5 1594#ifdef CONFIG_IEEE80211W
93b76319 1595 sta->sa_query_timed_out = 0;
5d22a1d5
JM		 1596#endif /* CONFIG_IEEE80211W */
1597
c140a228
JM		 1598 /*
1599 * Remove the STA entry in order to make sure the STA PS state gets
1600 * cleared and configuration gets updated in case of reassociation back
1601 * to the same AP.
1602 */
bdee6fce 1603 hapd->drv.sta_remove(hapd, sta->addr);
c140a228 1604
d45354be
JM		 1605#ifdef CONFIG_IEEE80211N
1606 if (sta->flags & WLAN_STA_HT)
1607 hostapd_get_ht_capab(hapd, sta->ht_capabilities, &ht_cap);
1608#endif /* CONFIG_IEEE80211N */
1609
62847751
JM		 1610 if (hapd->drv.sta_add(hapd, sta->addr, sta->aid, sta->capability,
1611 sta->supported_rates, sta->supported_rates_len,
1612 sta->listen_interval,
2ce86d9d 1613 sta->flags & WLAN_STA_HT ? &ht_cap : NULL)) {
6fc6879b
JM		 1614 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1615 HOSTAPD_LEVEL_NOTICE,
1616 "Could not add STA to kernel driver");
1617 }
1618
1619 if (sta->eapol_sm == NULL) {
1620 /*
1621 * This STA does not use RADIUS server for EAP authentication,
1622 * so bind it to the selected VLAN interface now, since the
1623 * interface selection is not going to change anymore.
1624 */
1625 ap_sta_bind_vlan(hapd, sta, 0);
1626 } else if (sta->vlan_id) {
1627 /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */
1628 ap_sta_bind_vlan(hapd, sta, 0);
1629 }
eddd8010 1630
4c2ddda4 1631 hapd->drv.set_sta_flags(hapd, sta);
6fc6879b
JM		 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);
d24df7c3 1637 hapd->new_assoc_sta_cb(hapd, sta, !new_assoc);
6fc6879b
JM		 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
1c6e69cc
JM		 1650/**
1651 * ieee802_11_mgmt_cb - Process management frame TX status callback
1652 * @hapd: hostapd BSS data structure (the BSS from which the management frame
1653 * was sent from)
1654 * @buf: management frame data (starting from IEEE 802.11 header)
1655 * @len: length of frame data in octets
1656 * @stype: management frame subtype from frame control field
1657 * @ok: Whether the frame was ACK'ed
1658 */
f8b1f695 1659void ieee802_11_mgmt_cb(struct hostapd_data *hapd, const u8 *buf, size_t len,
6fc6879b
JM		 1660 u16 stype, int ok)
1661{
f8b1f695
JM		 1662 const struct ieee80211_mgmt *mgmt;
1663 mgmt = (const struct ieee80211_mgmt *) buf;
6fc6879b
JM		 1664
1665 switch (stype) {
1666 case WLAN_FC_STYPE_AUTH:
1667 wpa_printf(MSG_DEBUG, "mgmt::auth cb");
1668 handle_auth_cb(hapd, mgmt, len, ok);
1669 break;
1670 case WLAN_FC_STYPE_ASSOC_RESP:
1671 wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb");
1672 handle_assoc_cb(hapd, mgmt, len, 0, ok);
1673 break;
1674 case WLAN_FC_STYPE_REASSOC_RESP:
1675 wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb");
1676 handle_assoc_cb(hapd, mgmt, len, 1, ok);
1677 break;
1678 case WLAN_FC_STYPE_PROBE_RESP:
1679 wpa_printf(MSG_DEBUG, "mgmt::proberesp cb");
1680 break;
1681 case WLAN_FC_STYPE_DEAUTH:
1682 /* ignore */
1683 break;
5d22a1d5
JM		 1684 case WLAN_FC_STYPE_ACTION:
1685 wpa_printf(MSG_DEBUG, "mgmt::action cb");
1686 break;
6fc6879b
JM		 1687 default:
1688 printf("unknown mgmt cb frame subtype %d\n", stype);
1689 break;
1690 }
1691}
1692
1693
6fc6879b
JM		 1694int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
1695{
1696 /* TODO */
1697 return 0;
1698}
1699
1700
1701int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
1702 char *buf, size_t buflen)
1703{
1704 /* TODO */
1705 return 0;
1706}
1707
f8b1f695
JM		 1708
1709void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr,
1710 const u8 *buf, size_t len, int ack)
1711{
1712 struct sta_info *sta;
1713 struct hostapd_iface *iface = hapd->iface;
1714
1715 sta = ap_get_sta(hapd, addr);
1716 if (sta == NULL && iface->num_bss > 1) {
1717 size_t j;
1718 for (j = 0; j < iface->num_bss; j++) {
1719 hapd = iface->bss[j];
1720 sta = ap_get_sta(hapd, addr);
1721 if (sta)
1722 break;
1723 }
1724 }
1725 if (sta == NULL)
1726 return;
1727 if (sta->flags & WLAN_STA_PENDING_POLL) {
1728 wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
1729 "activity poll", MAC2STR(sta->addr),
1730 ack ? "ACKed" : "did not ACK");
1731 if (ack)
1732 sta->flags &= ~WLAN_STA_PENDING_POLL;
1733 }
1734
1735 ieee802_1x_tx_status(hapd, sta, buf, len, ack);
1736}
1737
1738
fbbfcbac
FF		 1739void ieee802_11_rx_from_unknown(struct hostapd_data *hapd, const u8 *src,
1740 int wds)
f8b1f695
JM		 1741{
1742 struct sta_info *sta;
1743
1744 sta = ap_get_sta(hapd, src);
fbbfcbac
FF		 1745 if (sta && (sta->flags & WLAN_STA_ASSOC)) {
1746 if (wds && !(sta->flags & WLAN_STA_WDS)) {
1747 wpa_printf(MSG_DEBUG, "Enable 4-address WDS mode for "
1748 "STA " MACSTR " (aid %u)",
1749 MAC2STR(sta->addr), sta->aid);
1750 sta->flags |= WLAN_STA_WDS;
bdee6fce 1751 hapd->drv.set_wds_sta(hapd, sta->addr, sta->aid, 1);
fbbfcbac 1752 }
f8b1f695 1753 return;
fbbfcbac 1754 }
f8b1f695
JM		 1755
1756 wpa_printf(MSG_DEBUG, "Data/PS-poll frame from not associated STA "
1757 MACSTR, MAC2STR(src));
1758 if (sta && (sta->flags & WLAN_STA_AUTH))
bdee6fce 1759 hapd->drv.sta_disassoc(
f8b1f695
JM		 1760 hapd, src,
1761 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1762 else
bdee6fce 1763 hapd->drv.sta_deauth(
f8b1f695
JM		 1764 hapd, src,
1765 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1766}
1767
1768
6fc6879b 1769#endif /* CONFIG_NATIVE_WINDOWS */
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