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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 | ||
42 | u8 * 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 | ||
73 | u8 * 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 | ||
104 | u16 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 |
151 | static 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 |
178 | void 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 |
199 | void 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 | 220 | static 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 | ||
279 | static 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 | |
319 | static 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 |
344 | static 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 |
523 | static 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 |
556 | static 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 |
577 | static 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 | |
595 | static 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 | 639 | static 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); |
c47cf42e JM |
684 | if (hapd->conf->wps_state && elems.wps_ie) { |
685 | wpa_printf(MSG_DEBUG, "STA included WPS IE in (Re)Association " | |
686 | "Request - assume WPS is used"); | |
687 | sta->flags |= WLAN_STA_WPS; | |
688 | wpabuf_free(sta->wps_ie); | |
16e46ec0 JM |
689 | sta->wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, |
690 | WPS_IE_VENDOR_TYPE); | |
c47cf42e JM |
691 | wpa_ie = NULL; |
692 | wpa_ie_len = 0; | |
693 | } else if (hapd->conf->wps_state && wpa_ie == NULL) { | |
694 | wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE in " | |
695 | "(Re)Association Request - possible WPS use"); | |
696 | sta->flags |= WLAN_STA_MAYBE_WPS; | |
ad08c363 JM |
697 | } else |
698 | #endif /* CONFIG_WPS */ | |
6fc6879b | 699 | if (hapd->conf->wpa && wpa_ie == NULL) { |
5586f500 JM |
700 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, |
701 | HOSTAPD_LEVEL_INFO, | |
702 | "No WPA/RSN IE in association request"); | |
703 | return WLAN_STATUS_INVALID_IE; | |
6fc6879b JM |
704 | } |
705 | ||
706 | if (hapd->conf->wpa && wpa_ie) { | |
707 | int res; | |
708 | wpa_ie -= 2; | |
709 | wpa_ie_len += 2; | |
710 | if (sta->wpa_sm == NULL) | |
711 | sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, | |
712 | sta->addr); | |
713 | if (sta->wpa_sm == NULL) { | |
5586f500 JM |
714 | wpa_printf(MSG_WARNING, "Failed to initialize WPA " |
715 | "state machine"); | |
716 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
6fc6879b JM |
717 | } |
718 | res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm, | |
719 | wpa_ie, wpa_ie_len, | |
720 | elems.mdie, elems.mdie_len); | |
721 | if (res == WPA_INVALID_GROUP) | |
722 | resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID; | |
723 | else if (res == WPA_INVALID_PAIRWISE) | |
724 | resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID; | |
725 | else if (res == WPA_INVALID_AKMP) | |
726 | resp = WLAN_STATUS_AKMP_NOT_VALID; | |
727 | else if (res == WPA_ALLOC_FAIL) | |
728 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
729 | #ifdef CONFIG_IEEE80211W | |
730 | else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION) | |
9a9876bf | 731 | resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION; |
6fc6879b | 732 | else if (res == WPA_INVALID_MGMT_GROUP_CIPHER) |
9a9876bf | 733 | resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION; |
6fc6879b JM |
734 | #endif /* CONFIG_IEEE80211W */ |
735 | else if (res == WPA_INVALID_MDIE) | |
736 | resp = WLAN_STATUS_INVALID_MDIE; | |
737 | else if (res != WPA_IE_OK) | |
738 | resp = WLAN_STATUS_INVALID_IE; | |
739 | if (resp != WLAN_STATUS_SUCCESS) | |
5586f500 | 740 | return resp; |
f3f7540e | 741 | #ifdef CONFIG_IEEE80211W |
45c94154 JM |
742 | if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out && |
743 | sta->sa_query_count > 0) | |
744 | ap_check_sa_query_timeout(hapd, sta); | |
8f4617c6 JM |
745 | if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out && |
746 | (!reassoc || sta->auth_alg != WLAN_AUTH_FT)) { | |
5d22a1d5 | 747 | /* |
93b76319 JM |
748 | * STA has already been associated with MFP and SA |
749 | * Query timeout has not been reached. Reject the | |
750 | * association attempt temporarily and start SA Query, | |
751 | * if one is not pending. | |
5d22a1d5 JM |
752 | */ |
753 | ||
93b76319 JM |
754 | if (sta->sa_query_count == 0) |
755 | ap_sta_start_sa_query(hapd, sta); | |
5d22a1d5 | 756 | |
5586f500 | 757 | return WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY; |
5d22a1d5 JM |
758 | } |
759 | ||
f3f7540e JM |
760 | if (wpa_auth_uses_mfp(sta->wpa_sm)) |
761 | sta->flags |= WLAN_STA_MFP; | |
762 | else | |
763 | sta->flags &= ~WLAN_STA_MFP; | |
764 | #endif /* CONFIG_IEEE80211W */ | |
6fc6879b JM |
765 | |
766 | #ifdef CONFIG_IEEE80211R | |
767 | if (sta->auth_alg == WLAN_AUTH_FT) { | |
768 | if (!reassoc) { | |
769 | wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried " | |
770 | "to use association (not " | |
771 | "re-association) with FT auth_alg", | |
772 | MAC2STR(sta->addr)); | |
5586f500 | 773 | return WLAN_STATUS_UNSPECIFIED_FAILURE; |
6fc6879b JM |
774 | } |
775 | ||
5586f500 JM |
776 | resp = wpa_ft_validate_reassoc(sta->wpa_sm, ies, |
777 | ies_len); | |
6fc6879b | 778 | if (resp != WLAN_STATUS_SUCCESS) |
5586f500 | 779 | return resp; |
6fc6879b JM |
780 | } |
781 | #endif /* CONFIG_IEEE80211R */ | |
5586f500 | 782 | |
ff36ff00 JM |
783 | #ifdef CONFIG_IEEE80211N |
784 | if ((sta->flags & WLAN_STA_HT) && | |
785 | wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) { | |
5586f500 JM |
786 | hostapd_logger(hapd, sta->addr, |
787 | HOSTAPD_MODULE_IEEE80211, | |
788 | HOSTAPD_LEVEL_INFO, | |
789 | "Station tried to use TKIP with HT " | |
790 | "association"); | |
791 | return WLAN_STATUS_CIPHER_REJECTED_PER_POLICY; | |
ff36ff00 JM |
792 | } |
793 | #endif /* CONFIG_IEEE80211N */ | |
a8d05fca JM |
794 | } else |
795 | wpa_auth_sta_no_wpa(sta->wpa_sm); | |
6fc6879b | 796 | |
5586f500 JM |
797 | return WLAN_STATUS_SUCCESS; |
798 | } | |
799 | ||
800 | ||
801 | static void send_deauth(struct hostapd_data *hapd, const u8 *addr, | |
802 | u16 reason_code) | |
803 | { | |
804 | int send_len; | |
805 | struct ieee80211_mgmt reply; | |
806 | ||
807 | os_memset(&reply, 0, sizeof(reply)); | |
808 | reply.frame_control = | |
809 | IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_DEAUTH); | |
810 | os_memcpy(reply.da, addr, ETH_ALEN); | |
811 | os_memcpy(reply.sa, hapd->own_addr, ETH_ALEN); | |
812 | os_memcpy(reply.bssid, hapd->own_addr, ETH_ALEN); | |
813 | ||
814 | send_len = IEEE80211_HDRLEN + sizeof(reply.u.deauth); | |
815 | reply.u.deauth.reason_code = host_to_le16(reason_code); | |
816 | ||
c90933d2 | 817 | if (hapd->drv.send_mgmt_frame(hapd, &reply, send_len) < 0) |
5586f500 JM |
818 | wpa_printf(MSG_INFO, "Failed to send deauth: %s", |
819 | strerror(errno)); | |
820 | } | |
821 | ||
822 | ||
823 | static void send_assoc_resp(struct hostapd_data *hapd, struct sta_info *sta, | |
b57e086c | 824 | u16 status_code, int reassoc, const u8 *ies, |
5586f500 JM |
825 | size_t ies_len) |
826 | { | |
827 | int send_len; | |
828 | u8 buf[sizeof(struct ieee80211_mgmt) + 1024]; | |
829 | struct ieee80211_mgmt *reply; | |
830 | u8 *p; | |
831 | ||
832 | os_memset(buf, 0, sizeof(buf)); | |
833 | reply = (struct ieee80211_mgmt *) buf; | |
834 | reply->frame_control = | |
835 | IEEE80211_FC(WLAN_FC_TYPE_MGMT, | |
836 | (reassoc ? WLAN_FC_STYPE_REASSOC_RESP : | |
837 | WLAN_FC_STYPE_ASSOC_RESP)); | |
838 | os_memcpy(reply->da, sta->addr, ETH_ALEN); | |
839 | os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN); | |
840 | os_memcpy(reply->bssid, hapd->own_addr, ETH_ALEN); | |
841 | ||
842 | send_len = IEEE80211_HDRLEN; | |
843 | send_len += sizeof(reply->u.assoc_resp); | |
844 | reply->u.assoc_resp.capab_info = | |
845 | host_to_le16(hostapd_own_capab_info(hapd, sta, 0)); | |
846 | reply->u.assoc_resp.status_code = host_to_le16(status_code); | |
847 | reply->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0) | |
848 | | BIT(14) | BIT(15)); | |
849 | /* Supported rates */ | |
850 | p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable); | |
851 | /* Extended supported rates */ | |
852 | p = hostapd_eid_ext_supp_rates(hapd, p); | |
5586f500 JM |
853 | |
854 | #ifdef CONFIG_IEEE80211R | |
855 | if (status_code == WLAN_STATUS_SUCCESS) { | |
856 | /* IEEE 802.11r: Mobility Domain Information, Fast BSS | |
857 | * Transition Information, RSN, [RIC Response] */ | |
858 | p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p, | |
859 | buf + sizeof(buf) - p, | |
860 | sta->auth_alg, ies, ies_len); | |
861 | } | |
862 | #endif /* CONFIG_IEEE80211R */ | |
863 | ||
864 | #ifdef CONFIG_IEEE80211W | |
865 | if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY) | |
866 | p = hostapd_eid_assoc_comeback_time(hapd, sta, p); | |
867 | #endif /* CONFIG_IEEE80211W */ | |
868 | ||
1bc774a1 JM |
869 | #ifdef CONFIG_IEEE80211N |
870 | p = hostapd_eid_ht_capabilities(hapd, p); | |
871 | p = hostapd_eid_ht_operation(hapd, p); | |
872 | #endif /* CONFIG_IEEE80211N */ | |
873 | ||
874 | if (sta->flags & WLAN_STA_WMM) | |
875 | p = hostapd_eid_wmm(hapd, p); | |
876 | ||
5586f500 JM |
877 | send_len += p - reply->u.assoc_resp.variable; |
878 | ||
c90933d2 | 879 | if (hapd->drv.send_mgmt_frame(hapd, reply, send_len) < 0) |
5586f500 JM |
880 | wpa_printf(MSG_INFO, "Failed to send assoc resp: %s", |
881 | strerror(errno)); | |
882 | } | |
883 | ||
884 | ||
885 | static void handle_assoc(struct hostapd_data *hapd, | |
b57e086c JM |
886 | const struct ieee80211_mgmt *mgmt, size_t len, |
887 | int reassoc) | |
5586f500 JM |
888 | { |
889 | u16 capab_info, listen_interval; | |
890 | u16 resp = WLAN_STATUS_SUCCESS; | |
b57e086c | 891 | const u8 *pos; |
5586f500 JM |
892 | int left, i; |
893 | struct sta_info *sta; | |
894 | ||
895 | if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) : | |
896 | sizeof(mgmt->u.assoc_req))) { | |
897 | printf("handle_assoc(reassoc=%d) - too short payload (len=%lu)" | |
898 | "\n", reassoc, (unsigned long) len); | |
899 | return; | |
900 | } | |
901 | ||
902 | if (reassoc) { | |
903 | capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info); | |
904 | listen_interval = le_to_host16( | |
905 | mgmt->u.reassoc_req.listen_interval); | |
906 | wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR | |
907 | " capab_info=0x%02x listen_interval=%d current_ap=" | |
908 | MACSTR, | |
909 | MAC2STR(mgmt->sa), capab_info, listen_interval, | |
910 | MAC2STR(mgmt->u.reassoc_req.current_ap)); | |
911 | left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req)); | |
912 | pos = mgmt->u.reassoc_req.variable; | |
913 | } else { | |
914 | capab_info = le_to_host16(mgmt->u.assoc_req.capab_info); | |
915 | listen_interval = le_to_host16( | |
916 | mgmt->u.assoc_req.listen_interval); | |
917 | wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR | |
918 | " capab_info=0x%02x listen_interval=%d", | |
919 | MAC2STR(mgmt->sa), capab_info, listen_interval); | |
920 | left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req)); | |
921 | pos = mgmt->u.assoc_req.variable; | |
922 | } | |
923 | ||
924 | sta = ap_get_sta(hapd, mgmt->sa); | |
925 | #ifdef CONFIG_IEEE80211R | |
926 | if (sta && sta->auth_alg == WLAN_AUTH_FT && | |
927 | (sta->flags & WLAN_STA_AUTH) == 0) { | |
928 | wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate " | |
929 | "prior to authentication since it is using " | |
930 | "over-the-DS FT", MAC2STR(mgmt->sa)); | |
931 | } else | |
932 | #endif /* CONFIG_IEEE80211R */ | |
933 | if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) { | |
934 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
935 | HOSTAPD_LEVEL_INFO, "Station tried to " | |
936 | "associate before authentication " | |
937 | "(aid=%d flags=0x%x)", | |
938 | sta ? sta->aid : -1, | |
939 | sta ? sta->flags : 0); | |
940 | send_deauth(hapd, mgmt->sa, | |
941 | WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA); | |
942 | return; | |
943 | } | |
944 | ||
945 | if (hapd->tkip_countermeasures) { | |
946 | resp = WLAN_REASON_MICHAEL_MIC_FAILURE; | |
947 | goto fail; | |
948 | } | |
949 | ||
950 | if (listen_interval > hapd->conf->max_listen_interval) { | |
951 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
952 | HOSTAPD_LEVEL_DEBUG, | |
953 | "Too large Listen Interval (%d)", | |
954 | listen_interval); | |
955 | resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE; | |
956 | goto fail; | |
957 | } | |
958 | ||
959 | /* followed by SSID and Supported rates; and HT capabilities if 802.11n | |
960 | * is used */ | |
961 | resp = check_assoc_ies(hapd, sta, pos, left, reassoc); | |
962 | if (resp != WLAN_STATUS_SUCCESS) | |
963 | goto fail; | |
964 | ||
965 | if (hostapd_get_aid(hapd, sta) < 0) { | |
966 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
967 | HOSTAPD_LEVEL_INFO, "No room for more AIDs"); | |
968 | resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA; | |
969 | goto fail; | |
970 | } | |
971 | ||
972 | sta->capability = capab_info; | |
973 | sta->listen_interval = listen_interval; | |
974 | ||
6fc6879b JM |
975 | if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G) |
976 | sta->flags |= WLAN_STA_NONERP; | |
977 | for (i = 0; i < sta->supported_rates_len; i++) { | |
978 | if ((sta->supported_rates[i] & 0x7f) > 22) { | |
979 | sta->flags &= ~WLAN_STA_NONERP; | |
980 | break; | |
981 | } | |
982 | } | |
983 | if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) { | |
984 | sta->nonerp_set = 1; | |
985 | hapd->iface->num_sta_non_erp++; | |
986 | if (hapd->iface->num_sta_non_erp == 1) | |
987 | ieee802_11_set_beacons(hapd->iface); | |
988 | } | |
989 | ||
990 | if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) && | |
991 | !sta->no_short_slot_time_set) { | |
992 | sta->no_short_slot_time_set = 1; | |
993 | hapd->iface->num_sta_no_short_slot_time++; | |
994 | if (hapd->iface->current_mode->mode == | |
995 | HOSTAPD_MODE_IEEE80211G && | |
996 | hapd->iface->num_sta_no_short_slot_time == 1) | |
997 | ieee802_11_set_beacons(hapd->iface); | |
998 | } | |
999 | ||
1000 | if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) | |
1001 | sta->flags |= WLAN_STA_SHORT_PREAMBLE; | |
1002 | else | |
1003 | sta->flags &= ~WLAN_STA_SHORT_PREAMBLE; | |
1004 | ||
1005 | if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) && | |
1006 | !sta->no_short_preamble_set) { | |
1007 | sta->no_short_preamble_set = 1; | |
1008 | hapd->iface->num_sta_no_short_preamble++; | |
1009 | if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G | |
1010 | && hapd->iface->num_sta_no_short_preamble == 1) | |
1011 | ieee802_11_set_beacons(hapd->iface); | |
1012 | } | |
1013 | ||
d45354be | 1014 | #ifdef CONFIG_IEEE80211N |
5586f500 | 1015 | update_ht_state(hapd, sta); |
d45354be | 1016 | #endif /* CONFIG_IEEE80211N */ |
de9289c8 | 1017 | |
6fc6879b JM |
1018 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, |
1019 | HOSTAPD_LEVEL_DEBUG, | |
1020 | "association OK (aid %d)", sta->aid); | |
1021 | /* Station will be marked associated, after it acknowledges AssocResp | |
1022 | */ | |
1023 | ||
6f5c8dbd JM |
1024 | #ifdef CONFIG_IEEE80211W |
1025 | if ((sta->flags & WLAN_STA_MFP) && sta->sa_query_timed_out) { | |
1026 | wpa_printf(MSG_DEBUG, "Allowing %sassociation after timed out " | |
1027 | "SA Query procedure", reassoc ? "re" : ""); | |
1028 | /* TODO: Send a protected Disassociate frame to the STA using | |
1029 | * the old key and Reason Code "Previous Authentication no | |
1030 | * longer valid". Make sure this is only sent protected since | |
1031 | * unprotected frame would be received by the STA that is now | |
1032 | * trying to associate. | |
1033 | */ | |
1034 | } | |
1035 | #endif /* CONFIG_IEEE80211W */ | |
1036 | ||
1e858f69 JM |
1037 | if (reassoc) { |
1038 | os_memcpy(sta->previous_ap, mgmt->u.reassoc_req.current_ap, | |
1039 | ETH_ALEN); | |
1040 | } | |
1041 | ||
6fc6879b JM |
1042 | if (sta->last_assoc_req) |
1043 | os_free(sta->last_assoc_req); | |
1044 | sta->last_assoc_req = os_malloc(len); | |
1045 | if (sta->last_assoc_req) | |
1046 | os_memcpy(sta->last_assoc_req, mgmt, len); | |
1047 | ||
1048 | /* Make sure that the previously registered inactivity timer will not | |
1049 | * remove the STA immediately. */ | |
1050 | sta->timeout_next = STA_NULLFUNC; | |
1051 | ||
1052 | fail: | |
5586f500 | 1053 | send_assoc_resp(hapd, sta, resp, reassoc, pos, left); |
6fc6879b JM |
1054 | } |
1055 | ||
1056 | ||
6fc6879b | 1057 | static void handle_disassoc(struct hostapd_data *hapd, |
f8b1f695 | 1058 | const struct ieee80211_mgmt *mgmt, size_t len) |
6fc6879b JM |
1059 | { |
1060 | struct sta_info *sta; | |
1061 | ||
1062 | if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) { | |
1063 | printf("handle_disassoc - too short payload (len=%lu)\n", | |
1064 | (unsigned long) len); | |
1065 | return; | |
1066 | } | |
1067 | ||
1068 | wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d", | |
1069 | MAC2STR(mgmt->sa), | |
1070 | le_to_host16(mgmt->u.disassoc.reason_code)); | |
1071 | ||
6fc6879b JM |
1072 | sta = ap_get_sta(hapd, mgmt->sa); |
1073 | if (sta == NULL) { | |
1074 | printf("Station " MACSTR " trying to disassociate, but it " | |
1075 | "is not associated.\n", MAC2STR(mgmt->sa)); | |
1076 | return; | |
1077 | } | |
1078 | ||
1079 | sta->flags &= ~WLAN_STA_ASSOC; | |
20bd9547 JM |
1080 | wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED MACSTR, |
1081 | MAC2STR(sta->addr)); | |
6fc6879b JM |
1082 | wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC); |
1083 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
1084 | HOSTAPD_LEVEL_INFO, "disassociated"); | |
1085 | sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST; | |
1086 | ieee802_1x_notify_port_enabled(sta->eapol_sm, 0); | |
1087 | /* Stop Accounting and IEEE 802.1X sessions, but leave the STA | |
1088 | * authenticated. */ | |
1089 | accounting_sta_stop(hapd, sta); | |
1090 | ieee802_1x_free_station(sta); | |
bdee6fce | 1091 | hapd->drv.sta_remove(hapd, sta->addr); |
6fc6879b JM |
1092 | |
1093 | if (sta->timeout_next == STA_NULLFUNC || | |
1094 | sta->timeout_next == STA_DISASSOC) { | |
1095 | sta->timeout_next = STA_DEAUTH; | |
1096 | eloop_cancel_timeout(ap_handle_timer, hapd, sta); | |
1097 | eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer, | |
1098 | hapd, sta); | |
1099 | } | |
1100 | ||
1101 | mlme_disassociate_indication( | |
1102 | hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code)); | |
1103 | } | |
1104 | ||
1105 | ||
1106 | static void handle_deauth(struct hostapd_data *hapd, | |
f8b1f695 | 1107 | const struct ieee80211_mgmt *mgmt, size_t len) |
6fc6879b JM |
1108 | { |
1109 | struct sta_info *sta; | |
1110 | ||
1111 | if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) { | |
1112 | printf("handle_deauth - too short payload (len=%lu)\n", | |
1113 | (unsigned long) len); | |
1114 | return; | |
1115 | } | |
1116 | ||
1117 | wpa_printf(MSG_DEBUG, "deauthentication: STA=" MACSTR | |
1118 | " reason_code=%d", | |
1119 | MAC2STR(mgmt->sa), | |
1120 | le_to_host16(mgmt->u.deauth.reason_code)); | |
1121 | ||
6fc6879b JM |
1122 | sta = ap_get_sta(hapd, mgmt->sa); |
1123 | if (sta == NULL) { | |
1124 | printf("Station " MACSTR " trying to deauthenticate, but it " | |
1125 | "is not authenticated.\n", MAC2STR(mgmt->sa)); | |
1126 | return; | |
1127 | } | |
1128 | ||
1129 | sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC); | |
20bd9547 JM |
1130 | wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED MACSTR, |
1131 | MAC2STR(sta->addr)); | |
6fc6879b JM |
1132 | wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH); |
1133 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
1134 | HOSTAPD_LEVEL_DEBUG, "deauthenticated"); | |
1135 | mlme_deauthenticate_indication( | |
1136 | hapd, sta, le_to_host16(mgmt->u.deauth.reason_code)); | |
1137 | sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST; | |
1138 | ieee802_1x_notify_port_enabled(sta->eapol_sm, 0); | |
1139 | ap_free_sta(hapd, sta); | |
1140 | } | |
1141 | ||
1142 | ||
1143 | static void handle_beacon(struct hostapd_data *hapd, | |
b57e086c | 1144 | const struct ieee80211_mgmt *mgmt, size_t len, |
6fc6879b JM |
1145 | struct hostapd_frame_info *fi) |
1146 | { | |
1147 | struct ieee802_11_elems elems; | |
1148 | ||
1149 | if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) { | |
1150 | printf("handle_beacon - too short payload (len=%lu)\n", | |
1151 | (unsigned long) len); | |
1152 | return; | |
1153 | } | |
1154 | ||
3d536eb4 | 1155 | (void) ieee802_11_parse_elems(mgmt->u.beacon.variable, |
6fc6879b JM |
1156 | len - (IEEE80211_HDRLEN + |
1157 | sizeof(mgmt->u.beacon)), &elems, | |
1158 | 0); | |
1159 | ||
6fc6879b JM |
1160 | ap_list_process_beacon(hapd->iface, mgmt, &elems, fi); |
1161 | } | |
1162 | ||
1163 | ||
5d22a1d5 | 1164 | #ifdef CONFIG_IEEE80211W |
88b4b424 JM |
1165 | |
1166 | /* MLME-SAQuery.request */ | |
1167 | void ieee802_11_send_sa_query_req(struct hostapd_data *hapd, | |
1168 | const u8 *addr, const u8 *trans_id) | |
1169 | { | |
1170 | struct ieee80211_mgmt mgmt; | |
1171 | u8 *end; | |
1172 | ||
92305c5d JM |
1173 | wpa_printf(MSG_DEBUG, "IEEE 802.11: Sending SA Query Request to " |
1174 | MACSTR, MAC2STR(addr)); | |
1175 | wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID", | |
1176 | trans_id, WLAN_SA_QUERY_TR_ID_LEN); | |
1177 | ||
88b4b424 JM |
1178 | os_memset(&mgmt, 0, sizeof(mgmt)); |
1179 | mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, | |
1180 | WLAN_FC_STYPE_ACTION); | |
1181 | os_memcpy(mgmt.da, addr, ETH_ALEN); | |
1182 | os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN); | |
1183 | os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN); | |
1184 | mgmt.u.action.category = WLAN_ACTION_SA_QUERY; | |
1185 | mgmt.u.action.u.sa_query_req.action = WLAN_SA_QUERY_REQUEST; | |
1186 | os_memcpy(mgmt.u.action.u.sa_query_req.trans_id, trans_id, | |
1187 | WLAN_SA_QUERY_TR_ID_LEN); | |
1188 | end = mgmt.u.action.u.sa_query_req.trans_id + WLAN_SA_QUERY_TR_ID_LEN; | |
c90933d2 | 1189 | if (hapd->drv.send_mgmt_frame(hapd, &mgmt, end - (u8 *) &mgmt) < 0) |
88b4b424 JM |
1190 | perror("ieee802_11_send_sa_query_req: send"); |
1191 | } | |
1192 | ||
1193 | ||
358c3691 JM |
1194 | static void hostapd_sa_query_request(struct hostapd_data *hapd, |
1195 | const struct ieee80211_mgmt *mgmt) | |
1196 | { | |
1197 | struct sta_info *sta; | |
1198 | struct ieee80211_mgmt resp; | |
1199 | u8 *end; | |
1200 | ||
1201 | wpa_printf(MSG_DEBUG, "IEEE 802.11: Received SA Query Request from " | |
1202 | MACSTR, MAC2STR(mgmt->sa)); | |
1203 | wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID", | |
1204 | mgmt->u.action.u.sa_query_resp.trans_id, | |
1205 | WLAN_SA_QUERY_TR_ID_LEN); | |
1206 | ||
1207 | sta = ap_get_sta(hapd, mgmt->sa); | |
1208 | if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) { | |
1209 | wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignore SA Query Request " | |
1210 | "from unassociated STA " MACSTR, MAC2STR(mgmt->sa)); | |
1211 | return; | |
1212 | } | |
1213 | ||
1214 | wpa_printf(MSG_DEBUG, "IEEE 802.11: Sending SA Query Response to " | |
1215 | MACSTR, MAC2STR(mgmt->sa)); | |
1216 | ||
1217 | os_memset(&resp, 0, sizeof(resp)); | |
1218 | resp.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, | |
1219 | WLAN_FC_STYPE_ACTION); | |
1220 | os_memcpy(resp.da, mgmt->sa, ETH_ALEN); | |
1221 | os_memcpy(resp.sa, hapd->own_addr, ETH_ALEN); | |
1222 | os_memcpy(resp.bssid, hapd->own_addr, ETH_ALEN); | |
1223 | resp.u.action.category = WLAN_ACTION_SA_QUERY; | |
1224 | resp.u.action.u.sa_query_req.action = WLAN_SA_QUERY_RESPONSE; | |
1225 | os_memcpy(resp.u.action.u.sa_query_req.trans_id, | |
1226 | mgmt->u.action.u.sa_query_req.trans_id, | |
1227 | WLAN_SA_QUERY_TR_ID_LEN); | |
1228 | end = resp.u.action.u.sa_query_req.trans_id + WLAN_SA_QUERY_TR_ID_LEN; | |
1229 | if (hapd->drv.send_mgmt_frame(hapd, &resp, end - (u8 *) &resp) < 0) | |
1230 | perror("hostapd_sa_query_request: send"); | |
1231 | } | |
1232 | ||
1233 | ||
93b76319 | 1234 | static void hostapd_sa_query_action(struct hostapd_data *hapd, |
b57e086c JM |
1235 | const struct ieee80211_mgmt *mgmt, |
1236 | size_t len) | |
5d22a1d5 JM |
1237 | { |
1238 | struct sta_info *sta; | |
b57e086c | 1239 | const u8 *end; |
5d22a1d5 JM |
1240 | int i; |
1241 | ||
93b76319 JM |
1242 | end = mgmt->u.action.u.sa_query_resp.trans_id + |
1243 | WLAN_SA_QUERY_TR_ID_LEN; | |
5d22a1d5 | 1244 | if (((u8 *) mgmt) + len < end) { |
93b76319 | 1245 | wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short SA Query Action " |
5d22a1d5 JM |
1246 | "frame (len=%lu)", (unsigned long) len); |
1247 | return; | |
1248 | } | |
1249 | ||
358c3691 JM |
1250 | if (mgmt->u.action.u.sa_query_resp.action == WLAN_SA_QUERY_REQUEST) { |
1251 | hostapd_sa_query_request(hapd, mgmt); | |
1252 | return; | |
1253 | } | |
1254 | ||
93b76319 JM |
1255 | if (mgmt->u.action.u.sa_query_resp.action != WLAN_SA_QUERY_RESPONSE) { |
1256 | wpa_printf(MSG_DEBUG, "IEEE 802.11: Unexpected SA Query " | |
1257 | "Action %d", mgmt->u.action.u.sa_query_resp.action); | |
5d22a1d5 JM |
1258 | return; |
1259 | } | |
1260 | ||
92305c5d JM |
1261 | wpa_printf(MSG_DEBUG, "IEEE 802.11: Received SA Query Response from " |
1262 | MACSTR, MAC2STR(mgmt->sa)); | |
1263 | wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID", | |
1264 | mgmt->u.action.u.sa_query_resp.trans_id, | |
1265 | WLAN_SA_QUERY_TR_ID_LEN); | |
1266 | ||
93b76319 | 1267 | /* MLME-SAQuery.confirm */ |
5d22a1d5 JM |
1268 | |
1269 | sta = ap_get_sta(hapd, mgmt->sa); | |
93b76319 | 1270 | if (sta == NULL || sta->sa_query_trans_id == NULL) { |
5d22a1d5 | 1271 | wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching STA with " |
93b76319 | 1272 | "pending SA Query request found"); |
5d22a1d5 JM |
1273 | return; |
1274 | } | |
1275 | ||
93b76319 JM |
1276 | for (i = 0; i < sta->sa_query_count; i++) { |
1277 | if (os_memcmp(sta->sa_query_trans_id + | |
1278 | i * WLAN_SA_QUERY_TR_ID_LEN, | |
1279 | mgmt->u.action.u.sa_query_resp.trans_id, | |
1280 | WLAN_SA_QUERY_TR_ID_LEN) == 0) | |
5d22a1d5 JM |
1281 | break; |
1282 | } | |
1283 | ||
93b76319 JM |
1284 | if (i >= sta->sa_query_count) { |
1285 | wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching SA Query " | |
5d22a1d5 JM |
1286 | "transaction identifier found"); |
1287 | return; | |
1288 | } | |
1289 | ||
1290 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
93b76319 JM |
1291 | HOSTAPD_LEVEL_DEBUG, |
1292 | "Reply to pending SA Query received"); | |
1293 | ap_sta_stop_sa_query(hapd, sta); | |
5d22a1d5 | 1294 | } |
5d22a1d5 JM |
1295 | |
1296 | ||
c4e281fd JM |
1297 | static int robust_action_frame(u8 category) |
1298 | { | |
1299 | return category != WLAN_ACTION_PUBLIC && | |
1300 | category != WLAN_ACTION_HT; | |
1301 | } | |
9f64b827 | 1302 | #endif /* CONFIG_IEEE80211W */ |
c4e281fd JM |
1303 | |
1304 | ||
6fc6879b | 1305 | static void handle_action(struct hostapd_data *hapd, |
b57e086c | 1306 | const struct ieee80211_mgmt *mgmt, size_t len) |
6fc6879b | 1307 | { |
c4e281fd JM |
1308 | struct sta_info *sta; |
1309 | ||
6fc6879b JM |
1310 | if (len < IEEE80211_HDRLEN + 1) { |
1311 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
1312 | HOSTAPD_LEVEL_DEBUG, | |
1313 | "handle_action - too short payload (len=%lu)", | |
1314 | (unsigned long) len); | |
1315 | return; | |
1316 | } | |
1317 | ||
c4e281fd JM |
1318 | sta = ap_get_sta(hapd, mgmt->sa); |
1319 | #ifdef CONFIG_IEEE80211W | |
1320 | if (sta && (sta->flags & WLAN_STA_MFP) && | |
1321 | !(mgmt->frame_control & host_to_le16(WLAN_FC_ISWEP) && | |
1322 | robust_action_frame(mgmt->u.action.category))) { | |
1323 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
1324 | HOSTAPD_LEVEL_DEBUG, | |
1325 | "Dropped unprotected Robust Action frame from " | |
1326 | "an MFP STA"); | |
1327 | return; | |
1328 | } | |
1329 | #endif /* CONFIG_IEEE80211W */ | |
1330 | ||
6fc6879b JM |
1331 | switch (mgmt->u.action.category) { |
1332 | #ifdef CONFIG_IEEE80211R | |
1333 | case WLAN_ACTION_FT: | |
1334 | { | |
6fc6879b JM |
1335 | if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) { |
1336 | wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored FT Action " | |
1337 | "frame from unassociated STA " MACSTR, | |
1338 | MAC2STR(mgmt->sa)); | |
1339 | return; | |
1340 | } | |
1341 | ||
1342 | if (wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action, | |
1343 | len - IEEE80211_HDRLEN)) | |
1344 | break; | |
1345 | ||
1346 | return; | |
1347 | } | |
1348 | #endif /* CONFIG_IEEE80211R */ | |
c2a71408 | 1349 | case WLAN_ACTION_WMM: |
3ae0800c | 1350 | hostapd_wmm_action(hapd, mgmt, len); |
6fc6879b | 1351 | return; |
5d22a1d5 | 1352 | #ifdef CONFIG_IEEE80211W |
93b76319 JM |
1353 | case WLAN_ACTION_SA_QUERY: |
1354 | hostapd_sa_query_action(hapd, mgmt, len); | |
5d22a1d5 JM |
1355 | return; |
1356 | #endif /* CONFIG_IEEE80211W */ | |
c706d5aa JM |
1357 | case WLAN_ACTION_PUBLIC: |
1358 | if (hapd->public_action_cb) { | |
1359 | hapd->public_action_cb(hapd->public_action_cb_ctx, | |
1360 | (u8 *) mgmt, len, | |
1361 | hapd->iface->freq); | |
1362 | return; | |
1363 | } | |
1364 | break; | |
6fc6879b JM |
1365 | } |
1366 | ||
1367 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
1368 | HOSTAPD_LEVEL_DEBUG, | |
1369 | "handle_action - unknown action category %d or invalid " | |
1370 | "frame", | |
1371 | mgmt->u.action.category); | |
1372 | if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) && | |
1373 | !(mgmt->sa[0] & 0x01)) { | |
b57e086c JM |
1374 | struct ieee80211_mgmt *resp; |
1375 | ||
6fc6879b JM |
1376 | /* |
1377 | * IEEE 802.11-REVma/D9.0 - 7.3.1.11 | |
1378 | * Return the Action frame to the source without change | |
1379 | * except that MSB of the Category set to 1. | |
1380 | */ | |
1381 | wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action " | |
1382 | "frame back to sender"); | |
b57e086c JM |
1383 | resp = os_malloc(len); |
1384 | if (resp == NULL) | |
1385 | return; | |
1386 | os_memcpy(resp, mgmt, len); | |
1387 | os_memcpy(resp->da, resp->sa, ETH_ALEN); | |
1388 | os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN); | |
1389 | os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN); | |
1390 | resp->u.action.category |= 0x80; | |
1391 | ||
c90933d2 | 1392 | hapd->drv.send_mgmt_frame(hapd, resp, len); |
b57e086c | 1393 | os_free(resp); |
6fc6879b JM |
1394 | } |
1395 | } | |
1396 | ||
1397 | ||
1398 | /** | |
1399 | * ieee802_11_mgmt - process incoming IEEE 802.11 management frames | |
1400 | * @hapd: hostapd BSS data structure (the BSS to which the management frame was | |
1401 | * sent to) | |
1402 | * @buf: management frame data (starting from IEEE 802.11 header) | |
1403 | * @len: length of frame data in octets | |
a17df5fb | 1404 | * @fi: meta data about received frame (signal level, etc.) |
6fc6879b JM |
1405 | * |
1406 | * Process all incoming IEEE 802.11 management frames. This will be called for | |
1407 | * each frame received from the kernel driver through wlan#ap interface. In | |
1408 | * addition, it can be called to re-inserted pending frames (e.g., when using | |
1409 | * external RADIUS server as an MAC ACL). | |
1410 | */ | |
b57e086c | 1411 | void ieee802_11_mgmt(struct hostapd_data *hapd, const u8 *buf, size_t len, |
6fc6879b JM |
1412 | struct hostapd_frame_info *fi) |
1413 | { | |
f8b1f695 | 1414 | struct ieee80211_mgmt *mgmt; |
6fc6879b | 1415 | int broadcast; |
f8b1f695 JM |
1416 | u16 fc, stype; |
1417 | ||
1418 | mgmt = (struct ieee80211_mgmt *) buf; | |
1419 | fc = le_to_host16(mgmt->frame_control); | |
1420 | stype = WLAN_FC_GET_STYPE(fc); | |
6fc6879b JM |
1421 | |
1422 | if (stype == WLAN_FC_STYPE_BEACON) { | |
1423 | handle_beacon(hapd, mgmt, len, fi); | |
1424 | return; | |
1425 | } | |
1426 | ||
6fc6879b JM |
1427 | broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff && |
1428 | mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff && | |
1429 | mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff; | |
1430 | ||
1431 | if (!broadcast && | |
fe2c5241 | 1432 | os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) { |
6fc6879b JM |
1433 | printf("MGMT: BSSID=" MACSTR " not our address\n", |
1434 | MAC2STR(mgmt->bssid)); | |
1435 | return; | |
1436 | } | |
1437 | ||
1438 | ||
1439 | if (stype == WLAN_FC_STYPE_PROBE_REQ) { | |
1440 | handle_probe_req(hapd, mgmt, len); | |
1441 | return; | |
1442 | } | |
1443 | ||
1444 | if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) { | |
1445 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
1446 | HOSTAPD_LEVEL_DEBUG, | |
1447 | "MGMT: DA=" MACSTR " not our address", | |
1448 | MAC2STR(mgmt->da)); | |
1449 | return; | |
1450 | } | |
1451 | ||
1452 | switch (stype) { | |
1453 | case WLAN_FC_STYPE_AUTH: | |
1454 | wpa_printf(MSG_DEBUG, "mgmt::auth"); | |
1455 | handle_auth(hapd, mgmt, len); | |
1456 | break; | |
1457 | case WLAN_FC_STYPE_ASSOC_REQ: | |
1458 | wpa_printf(MSG_DEBUG, "mgmt::assoc_req"); | |
1459 | handle_assoc(hapd, mgmt, len, 0); | |
1460 | break; | |
6fc6879b JM |
1461 | case WLAN_FC_STYPE_REASSOC_REQ: |
1462 | wpa_printf(MSG_DEBUG, "mgmt::reassoc_req"); | |
1463 | handle_assoc(hapd, mgmt, len, 1); | |
1464 | break; | |
1465 | case WLAN_FC_STYPE_DISASSOC: | |
1466 | wpa_printf(MSG_DEBUG, "mgmt::disassoc"); | |
1467 | handle_disassoc(hapd, mgmt, len); | |
1468 | break; | |
1469 | case WLAN_FC_STYPE_DEAUTH: | |
1470 | wpa_printf(MSG_DEBUG, "mgmt::deauth"); | |
1471 | handle_deauth(hapd, mgmt, len); | |
1472 | break; | |
1473 | case WLAN_FC_STYPE_ACTION: | |
1474 | wpa_printf(MSG_DEBUG, "mgmt::action"); | |
1475 | handle_action(hapd, mgmt, len); | |
1476 | break; | |
1477 | default: | |
1478 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
1479 | HOSTAPD_LEVEL_DEBUG, | |
1480 | "unknown mgmt frame subtype %d", stype); | |
1481 | break; | |
1482 | } | |
1483 | } | |
1484 | ||
1485 | ||
1486 | static void handle_auth_cb(struct hostapd_data *hapd, | |
f8b1f695 | 1487 | const struct ieee80211_mgmt *mgmt, |
6fc6879b JM |
1488 | size_t len, int ok) |
1489 | { | |
1490 | u16 auth_alg, auth_transaction, status_code; | |
1491 | struct sta_info *sta; | |
1492 | ||
1493 | if (!ok) { | |
1494 | hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211, | |
1495 | HOSTAPD_LEVEL_NOTICE, | |
1496 | "did not acknowledge authentication response"); | |
1497 | return; | |
1498 | } | |
1499 | ||
1500 | if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) { | |
1501 | printf("handle_auth_cb - too short payload (len=%lu)\n", | |
1502 | (unsigned long) len); | |
1503 | return; | |
1504 | } | |
1505 | ||
1506 | auth_alg = le_to_host16(mgmt->u.auth.auth_alg); | |
1507 | auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction); | |
1508 | status_code = le_to_host16(mgmt->u.auth.status_code); | |
1509 | ||
1510 | sta = ap_get_sta(hapd, mgmt->da); | |
1511 | if (!sta) { | |
1512 | printf("handle_auth_cb: STA " MACSTR " not found\n", | |
1513 | MAC2STR(mgmt->da)); | |
1514 | return; | |
1515 | } | |
1516 | ||
1517 | if (status_code == WLAN_STATUS_SUCCESS && | |
1518 | ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) || | |
1519 | (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) { | |
1520 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
1521 | HOSTAPD_LEVEL_INFO, "authenticated"); | |
1522 | sta->flags |= WLAN_STA_AUTH; | |
1523 | } | |
1524 | } | |
1525 | ||
1526 | ||
1527 | static void handle_assoc_cb(struct hostapd_data *hapd, | |
f8b1f695 | 1528 | const struct ieee80211_mgmt *mgmt, |
6fc6879b JM |
1529 | size_t len, int reassoc, int ok) |
1530 | { | |
1531 | u16 status; | |
1532 | struct sta_info *sta; | |
1533 | int new_assoc = 1; | |
fc4e2d95 | 1534 | struct ieee80211_ht_capabilities ht_cap; |
6fc6879b JM |
1535 | |
1536 | if (!ok) { | |
1537 | hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211, | |
1538 | HOSTAPD_LEVEL_DEBUG, | |
1539 | "did not acknowledge association response"); | |
1540 | return; | |
1541 | } | |
1542 | ||
1543 | if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) : | |
1544 | sizeof(mgmt->u.assoc_resp))) { | |
1545 | printf("handle_assoc_cb(reassoc=%d) - too short payload " | |
1546 | "(len=%lu)\n", reassoc, (unsigned long) len); | |
1547 | return; | |
1548 | } | |
1549 | ||
1550 | if (reassoc) | |
1551 | status = le_to_host16(mgmt->u.reassoc_resp.status_code); | |
1552 | else | |
1553 | status = le_to_host16(mgmt->u.assoc_resp.status_code); | |
1554 | ||
1555 | sta = ap_get_sta(hapd, mgmt->da); | |
1556 | if (!sta) { | |
1557 | printf("handle_assoc_cb: STA " MACSTR " not found\n", | |
1558 | MAC2STR(mgmt->da)); | |
1559 | return; | |
1560 | } | |
1561 | ||
1562 | if (status != WLAN_STATUS_SUCCESS) | |
1563 | goto fail; | |
1564 | ||
1565 | /* Stop previous accounting session, if one is started, and allocate | |
1566 | * new session id for the new session. */ | |
1567 | accounting_sta_stop(hapd, sta); | |
6fc6879b JM |
1568 | |
1569 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
1570 | HOSTAPD_LEVEL_INFO, | |
2fc98d02 JM |
1571 | "associated (aid %d)", |
1572 | sta->aid); | |
6fc6879b JM |
1573 | |
1574 | if (sta->flags & WLAN_STA_ASSOC) | |
1575 | new_assoc = 0; | |
1576 | sta->flags |= WLAN_STA_ASSOC; | |
ef580012 JM |
1577 | if ((!hapd->conf->ieee802_1x && !hapd->conf->wpa) || |
1578 | sta->auth_alg == WLAN_AUTH_FT) { | |
1579 | /* | |
1580 | * Open, static WEP, or FT protocol; no separate authorization | |
1581 | * step. | |
1582 | */ | |
515cf93f | 1583 | sta->flags |= WLAN_STA_AUTHORIZED; |
20bd9547 JM |
1584 | wpa_msg(hapd->msg_ctx, MSG_INFO, |
1585 | AP_STA_CONNECTED MACSTR, MAC2STR(sta->addr)); | |
515cf93f | 1586 | } |
6fc6879b JM |
1587 | |
1588 | if (reassoc) | |
1589 | mlme_reassociate_indication(hapd, sta); | |
1590 | else | |
1591 | mlme_associate_indication(hapd, sta); | |
1592 | ||
5d22a1d5 | 1593 | #ifdef CONFIG_IEEE80211W |
93b76319 | 1594 | sta->sa_query_timed_out = 0; |
5d22a1d5 JM |
1595 | #endif /* CONFIG_IEEE80211W */ |
1596 | ||
c140a228 JM |
1597 | /* |
1598 | * Remove the STA entry in order to make sure the STA PS state gets | |
1599 | * cleared and configuration gets updated in case of reassociation back | |
1600 | * to the same AP. | |
1601 | */ | |
bdee6fce | 1602 | hapd->drv.sta_remove(hapd, sta->addr); |
c140a228 | 1603 | |
d45354be JM |
1604 | #ifdef CONFIG_IEEE80211N |
1605 | if (sta->flags & WLAN_STA_HT) | |
1606 | hostapd_get_ht_capab(hapd, sta->ht_capabilities, &ht_cap); | |
1607 | #endif /* CONFIG_IEEE80211N */ | |
1608 | ||
62847751 JM |
1609 | if (hapd->drv.sta_add(hapd, sta->addr, sta->aid, sta->capability, |
1610 | sta->supported_rates, sta->supported_rates_len, | |
1611 | sta->listen_interval, | |
2ce86d9d | 1612 | sta->flags & WLAN_STA_HT ? &ht_cap : NULL)) { |
6fc6879b JM |
1613 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, |
1614 | HOSTAPD_LEVEL_NOTICE, | |
1615 | "Could not add STA to kernel driver"); | |
1616 | } | |
1617 | ||
1618 | if (sta->eapol_sm == NULL) { | |
1619 | /* | |
1620 | * This STA does not use RADIUS server for EAP authentication, | |
1621 | * so bind it to the selected VLAN interface now, since the | |
1622 | * interface selection is not going to change anymore. | |
1623 | */ | |
4254100d JM |
1624 | if (ap_sta_bind_vlan(hapd, sta, 0) < 0) |
1625 | goto fail; | |
6fc6879b JM |
1626 | } else if (sta->vlan_id) { |
1627 | /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */ | |
4254100d JM |
1628 | if (ap_sta_bind_vlan(hapd, sta, 0) < 0) |
1629 | goto fail; | |
6fc6879b | 1630 | } |
eddd8010 | 1631 | |
4c2ddda4 | 1632 | hapd->drv.set_sta_flags(hapd, sta); |
6fc6879b JM |
1633 | |
1634 | if (sta->auth_alg == WLAN_AUTH_FT) | |
1635 | wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT); | |
1636 | else | |
1637 | wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC); | |
d24df7c3 | 1638 | hapd->new_assoc_sta_cb(hapd, sta, !new_assoc); |
6fc6879b JM |
1639 | |
1640 | ieee802_1x_notify_port_enabled(sta->eapol_sm, 1); | |
1641 | ||
1642 | fail: | |
1643 | /* Copy of the association request is not needed anymore */ | |
1644 | if (sta->last_assoc_req) { | |
1645 | os_free(sta->last_assoc_req); | |
1646 | sta->last_assoc_req = NULL; | |
1647 | } | |
1648 | } | |
1649 | ||
1650 | ||
1c6e69cc JM |
1651 | /** |
1652 | * ieee802_11_mgmt_cb - Process management frame TX status callback | |
1653 | * @hapd: hostapd BSS data structure (the BSS from which the management frame | |
1654 | * was sent from) | |
1655 | * @buf: management frame data (starting from IEEE 802.11 header) | |
1656 | * @len: length of frame data in octets | |
1657 | * @stype: management frame subtype from frame control field | |
1658 | * @ok: Whether the frame was ACK'ed | |
1659 | */ | |
f8b1f695 | 1660 | void ieee802_11_mgmt_cb(struct hostapd_data *hapd, const u8 *buf, size_t len, |
6fc6879b JM |
1661 | u16 stype, int ok) |
1662 | { | |
f8b1f695 JM |
1663 | const struct ieee80211_mgmt *mgmt; |
1664 | mgmt = (const struct ieee80211_mgmt *) buf; | |
6fc6879b JM |
1665 | |
1666 | switch (stype) { | |
1667 | case WLAN_FC_STYPE_AUTH: | |
1668 | wpa_printf(MSG_DEBUG, "mgmt::auth cb"); | |
1669 | handle_auth_cb(hapd, mgmt, len, ok); | |
1670 | break; | |
1671 | case WLAN_FC_STYPE_ASSOC_RESP: | |
1672 | wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb"); | |
1673 | handle_assoc_cb(hapd, mgmt, len, 0, ok); | |
1674 | break; | |
1675 | case WLAN_FC_STYPE_REASSOC_RESP: | |
1676 | wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb"); | |
1677 | handle_assoc_cb(hapd, mgmt, len, 1, ok); | |
1678 | break; | |
1679 | case WLAN_FC_STYPE_PROBE_RESP: | |
1680 | wpa_printf(MSG_DEBUG, "mgmt::proberesp cb"); | |
1681 | break; | |
1682 | case WLAN_FC_STYPE_DEAUTH: | |
1683 | /* ignore */ | |
1684 | break; | |
5d22a1d5 JM |
1685 | case WLAN_FC_STYPE_ACTION: |
1686 | wpa_printf(MSG_DEBUG, "mgmt::action cb"); | |
1687 | break; | |
6fc6879b JM |
1688 | default: |
1689 | printf("unknown mgmt cb frame subtype %d\n", stype); | |
1690 | break; | |
1691 | } | |
1692 | } | |
1693 | ||
1694 | ||
6fc6879b JM |
1695 | int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen) |
1696 | { | |
1697 | /* TODO */ | |
1698 | return 0; | |
1699 | } | |
1700 | ||
1701 | ||
1702 | int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta, | |
1703 | char *buf, size_t buflen) | |
1704 | { | |
1705 | /* TODO */ | |
1706 | return 0; | |
1707 | } | |
1708 | ||
f8b1f695 JM |
1709 | |
1710 | void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr, | |
1711 | const u8 *buf, size_t len, int ack) | |
1712 | { | |
1713 | struct sta_info *sta; | |
1714 | struct hostapd_iface *iface = hapd->iface; | |
1715 | ||
1716 | sta = ap_get_sta(hapd, addr); | |
1717 | if (sta == NULL && iface->num_bss > 1) { | |
1718 | size_t j; | |
1719 | for (j = 0; j < iface->num_bss; j++) { | |
1720 | hapd = iface->bss[j]; | |
1721 | sta = ap_get_sta(hapd, addr); | |
1722 | if (sta) | |
1723 | break; | |
1724 | } | |
1725 | } | |
1726 | if (sta == NULL) | |
1727 | return; | |
1728 | if (sta->flags & WLAN_STA_PENDING_POLL) { | |
1729 | wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending " | |
1730 | "activity poll", MAC2STR(sta->addr), | |
1731 | ack ? "ACKed" : "did not ACK"); | |
1732 | if (ack) | |
1733 | sta->flags &= ~WLAN_STA_PENDING_POLL; | |
1734 | } | |
1735 | ||
1736 | ieee802_1x_tx_status(hapd, sta, buf, len, ack); | |
1737 | } | |
1738 | ||
1739 | ||
fbbfcbac FF |
1740 | void ieee802_11_rx_from_unknown(struct hostapd_data *hapd, const u8 *src, |
1741 | int wds) | |
f8b1f695 JM |
1742 | { |
1743 | struct sta_info *sta; | |
1744 | ||
1745 | sta = ap_get_sta(hapd, src); | |
fbbfcbac FF |
1746 | if (sta && (sta->flags & WLAN_STA_ASSOC)) { |
1747 | if (wds && !(sta->flags & WLAN_STA_WDS)) { | |
1748 | wpa_printf(MSG_DEBUG, "Enable 4-address WDS mode for " | |
1749 | "STA " MACSTR " (aid %u)", | |
1750 | MAC2STR(sta->addr), sta->aid); | |
1751 | sta->flags |= WLAN_STA_WDS; | |
bdee6fce | 1752 | hapd->drv.set_wds_sta(hapd, sta->addr, sta->aid, 1); |
fbbfcbac | 1753 | } |
f8b1f695 | 1754 | return; |
fbbfcbac | 1755 | } |
f8b1f695 JM |
1756 | |
1757 | wpa_printf(MSG_DEBUG, "Data/PS-poll frame from not associated STA " | |
1758 | MACSTR, MAC2STR(src)); | |
1759 | if (sta && (sta->flags & WLAN_STA_AUTH)) | |
bdee6fce | 1760 | hapd->drv.sta_disassoc( |
f8b1f695 JM |
1761 | hapd, src, |
1762 | WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); | |
1763 | else | |
bdee6fce | 1764 | hapd->drv.sta_deauth( |
f8b1f695 JM |
1765 | hapd, src, |
1766 | WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); | |
1767 | } | |
1768 | ||
1769 | ||
6fc6879b | 1770 | #endif /* CONFIG_NATIVE_WINDOWS */ |