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6fc6879b JM |
1 | /* |
2 | * hostapd / IEEE 802.11 Management | |
3 | * Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi> | |
71b6ae14 | 4 | * Copyright (c) 2007-2008, Intel Corporation |
6fc6879b JM |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | * Alternatively, this software may be distributed under the terms of BSD | |
11 | * license. | |
12 | * | |
13 | * See README and COPYING for more details. | |
14 | */ | |
15 | ||
16 | #include "includes.h" | |
17 | ||
18 | #ifndef CONFIG_NATIVE_WINDOWS | |
19 | ||
20 | #include <net/if.h> | |
21 | ||
22 | #include "eloop.h" | |
23 | #include "hostapd.h" | |
24 | #include "ieee802_11.h" | |
25 | #include "beacon.h" | |
26 | #include "hw_features.h" | |
27 | #include "radius/radius.h" | |
28 | #include "radius/radius_client.h" | |
29 | #include "ieee802_11_auth.h" | |
30 | #include "sta_info.h" | |
31 | #include "rc4.h" | |
32 | #include "ieee802_1x.h" | |
33 | #include "wpa.h" | |
34 | #include "wme.h" | |
35 | #include "ap_list.h" | |
36 | #include "accounting.h" | |
37 | #include "driver.h" | |
6fc6879b JM |
38 | #include "mlme.h" |
39 | ||
40 | ||
41 | u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid) | |
42 | { | |
43 | u8 *pos = eid; | |
44 | int i, num, count; | |
45 | ||
46 | if (hapd->iface->current_rates == NULL) | |
47 | return eid; | |
48 | ||
49 | *pos++ = WLAN_EID_SUPP_RATES; | |
50 | num = hapd->iface->num_rates; | |
51 | if (num > 8) { | |
52 | /* rest of the rates are encoded in Extended supported | |
53 | * rates element */ | |
54 | num = 8; | |
55 | } | |
56 | ||
57 | *pos++ = num; | |
58 | count = 0; | |
59 | for (i = 0, count = 0; i < hapd->iface->num_rates && count < num; | |
60 | i++) { | |
61 | count++; | |
62 | *pos = hapd->iface->current_rates[i].rate / 5; | |
63 | if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC) | |
64 | *pos |= 0x80; | |
65 | pos++; | |
66 | } | |
67 | ||
68 | return pos; | |
69 | } | |
70 | ||
71 | ||
72 | u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid) | |
73 | { | |
74 | u8 *pos = eid; | |
75 | int i, num, count; | |
76 | ||
77 | if (hapd->iface->current_rates == NULL) | |
78 | return eid; | |
79 | ||
80 | num = hapd->iface->num_rates; | |
81 | if (num <= 8) | |
82 | return eid; | |
83 | num -= 8; | |
84 | ||
85 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
86 | *pos++ = num; | |
87 | count = 0; | |
88 | for (i = 0, count = 0; i < hapd->iface->num_rates && count < num + 8; | |
89 | i++) { | |
90 | count++; | |
91 | if (count <= 8) | |
92 | continue; /* already in SuppRates IE */ | |
93 | *pos = hapd->iface->current_rates[i].rate / 5; | |
94 | if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC) | |
95 | *pos |= 0x80; | |
96 | pos++; | |
97 | } | |
98 | ||
99 | return pos; | |
100 | } | |
101 | ||
102 | ||
de9289c8 JM |
103 | u8 * hostapd_eid_ht_capabilities_info(struct hostapd_data *hapd, u8 *eid) |
104 | { | |
9d2a76a2 | 105 | #ifdef CONFIG_IEEE80211N |
edd360e1 | 106 | struct ieee80211_ht_capability *cap; |
de9289c8 | 107 | u8 *pos = eid; |
edd360e1 | 108 | |
9d2a76a2 | 109 | if (!hapd->iconf->ieee80211n) |
edd360e1 JM |
110 | return eid; |
111 | ||
112 | *pos++ = WLAN_EID_HT_CAP; | |
113 | *pos++ = sizeof(*cap); | |
114 | ||
115 | cap = (struct ieee80211_ht_capability *) pos; | |
116 | os_memset(cap, 0, sizeof(*cap)); | |
117 | SET_2BIT_U8(&cap->mac_ht_params_info, | |
118 | MAC_HT_PARAM_INFO_MAX_RX_AMPDU_FACTOR_OFFSET, | |
119 | MAX_RX_AMPDU_FACTOR_64KB); | |
120 | ||
9d2a76a2 | 121 | cap->capabilities_info = host_to_le16(hapd->iconf->ht_capab); |
edd360e1 JM |
122 | |
123 | cap->supported_mcs_set[0] = 0xff; | |
124 | cap->supported_mcs_set[1] = 0xff; | |
125 | ||
126 | pos += sizeof(*cap); | |
127 | ||
de9289c8 | 128 | return pos; |
9d2a76a2 JM |
129 | #else /* CONFIG_IEEE80211N */ |
130 | return eid; | |
131 | #endif /* CONFIG_IEEE80211N */ | |
de9289c8 JM |
132 | } |
133 | ||
134 | ||
135 | u8 * hostapd_eid_ht_operation(struct hostapd_data *hapd, u8 *eid) | |
136 | { | |
9d2a76a2 | 137 | #ifdef CONFIG_IEEE80211N |
edd360e1 | 138 | struct ieee80211_ht_operation *oper; |
de9289c8 | 139 | u8 *pos = eid; |
edd360e1 | 140 | |
9d2a76a2 | 141 | if (!hapd->iconf->ieee80211n) |
edd360e1 JM |
142 | return eid; |
143 | ||
144 | *pos++ = WLAN_EID_HT_OPERATION; | |
145 | *pos++ = sizeof(*oper); | |
146 | ||
147 | oper = (struct ieee80211_ht_operation *) pos; | |
148 | os_memset(oper, 0, sizeof(*oper)); | |
149 | ||
a8d8410e | 150 | oper->control_chan = hapd->iconf->channel; |
edd360e1 | 151 | oper->operation_mode = host_to_le16(hapd->iface->ht_op_mode); |
a8d8410e | 152 | if (hapd->iconf->secondary_channel == 1) |
cd587cce JM |
153 | oper->ht_param |= HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE | |
154 | HT_INFO_HT_PARAM_REC_TRANS_CHNL_WIDTH; | |
a8d8410e | 155 | if (hapd->iconf->secondary_channel == -1) |
cd587cce JM |
156 | oper->ht_param |= HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW | |
157 | HT_INFO_HT_PARAM_REC_TRANS_CHNL_WIDTH; | |
edd360e1 JM |
158 | |
159 | pos += sizeof(*oper); | |
160 | ||
de9289c8 | 161 | return pos; |
9d2a76a2 JM |
162 | #else /* CONFIG_IEEE80211N */ |
163 | return eid; | |
164 | #endif /* CONFIG_IEEE80211N */ | |
de9289c8 JM |
165 | } |
166 | ||
167 | ||
9d2a76a2 JM |
168 | #ifdef CONFIG_IEEE80211N |
169 | ||
de9289c8 JM |
170 | /* |
171 | op_mode | |
172 | Set to 0 (HT pure) under the followign conditions | |
173 | - all STAs in the BSS are 20/40 MHz HT in 20/40 MHz BSS or | |
174 | - all STAs in the BSS are 20 MHz HT in 20 MHz BSS | |
175 | Set to 1 (HT non-member protection) if there may be non-HT STAs | |
176 | in both the primary and the secondary channel | |
177 | Set to 2 if only HT STAs are associated in BSS, | |
178 | however and at least one 20 MHz HT STA is associated | |
179 | Set to 3 (HT mixed mode) when one or more non-HT STAs are associated | |
180 | (currently non-GF HT station is considered as non-HT STA also) | |
181 | */ | |
182 | int hostapd_ht_operation_update(struct hostapd_iface *iface) | |
183 | { | |
de9289c8 JM |
184 | u16 cur_op_mode, new_op_mode; |
185 | int op_mode_changes = 0; | |
de9289c8 | 186 | |
9d2a76a2 | 187 | if (!iface->conf->ieee80211n || iface->conf->ht_op_mode_fixed) |
de9289c8 JM |
188 | return 0; |
189 | ||
de9289c8 | 190 | wpa_printf(MSG_DEBUG, "%s current operation mode=0x%X", |
edd360e1 | 191 | __func__, iface->ht_op_mode); |
de9289c8 | 192 | |
edd360e1 | 193 | if (!(iface->ht_op_mode & HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT) |
de9289c8 | 194 | && iface->num_sta_ht_no_gf) { |
edd360e1 JM |
195 | iface->ht_op_mode |= |
196 | HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT; | |
de9289c8 | 197 | op_mode_changes++; |
edd360e1 | 198 | } else if ((iface->ht_op_mode & |
de9289c8 JM |
199 | HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT) && |
200 | iface->num_sta_ht_no_gf == 0) { | |
edd360e1 JM |
201 | iface->ht_op_mode &= |
202 | ~HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT; | |
de9289c8 JM |
203 | op_mode_changes++; |
204 | } | |
205 | ||
edd360e1 JM |
206 | if (!(iface->ht_op_mode & HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT) && |
207 | (iface->num_sta_no_ht || iface->olbc_ht)) { | |
208 | iface->ht_op_mode |= HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT; | |
de9289c8 | 209 | op_mode_changes++; |
edd360e1 JM |
210 | } else if ((iface->ht_op_mode & |
211 | HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT) && | |
212 | (iface->num_sta_no_ht == 0 && !iface->olbc_ht)) { | |
213 | iface->ht_op_mode &= | |
214 | ~HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT; | |
de9289c8 JM |
215 | op_mode_changes++; |
216 | } | |
217 | ||
218 | /* Note: currently we switch to the MIXED op mode if HT non-greenfield | |
219 | * station is associated. Probably it's a theoretical case, since | |
220 | * it looks like all known HT STAs support greenfield. | |
221 | */ | |
222 | new_op_mode = 0; | |
223 | if (iface->num_sta_no_ht || | |
edd360e1 | 224 | (iface->ht_op_mode & HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT)) |
de9289c8 | 225 | new_op_mode = OP_MODE_MIXED; |
9d2a76a2 JM |
226 | else if ((iface->conf->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET) |
227 | && iface->num_sta_ht_20mhz) | |
de9289c8 JM |
228 | new_op_mode = OP_MODE_20MHZ_HT_STA_ASSOCED; |
229 | else if (iface->olbc_ht) | |
230 | new_op_mode = OP_MODE_MAY_BE_LEGACY_STAS; | |
231 | else | |
232 | new_op_mode = OP_MODE_PURE; | |
233 | ||
edd360e1 | 234 | cur_op_mode = iface->ht_op_mode & HT_INFO_OPERATION_MODE_OP_MODE_MASK; |
de9289c8 | 235 | if (cur_op_mode != new_op_mode) { |
edd360e1 JM |
236 | iface->ht_op_mode &= ~HT_INFO_OPERATION_MODE_OP_MODE_MASK; |
237 | iface->ht_op_mode |= new_op_mode; | |
de9289c8 JM |
238 | op_mode_changes++; |
239 | } | |
240 | ||
241 | wpa_printf(MSG_DEBUG, "%s new operation mode=0x%X changes=%d", | |
edd360e1 | 242 | __func__, iface->ht_op_mode, op_mode_changes); |
de9289c8 JM |
243 | |
244 | return op_mode_changes; | |
245 | } | |
246 | ||
247 | #endif /* CONFIG_IEEE80211N */ | |
248 | ||
249 | ||
6fc6879b JM |
250 | u16 hostapd_own_capab_info(struct hostapd_data *hapd, struct sta_info *sta, |
251 | int probe) | |
252 | { | |
253 | int capab = WLAN_CAPABILITY_ESS; | |
254 | int privacy; | |
255 | ||
256 | if (hapd->iface->num_sta_no_short_preamble == 0 && | |
257 | hapd->iconf->preamble == SHORT_PREAMBLE) | |
258 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
259 | ||
260 | privacy = hapd->conf->ssid.wep.keys_set; | |
261 | ||
262 | if (hapd->conf->ieee802_1x && | |
263 | (hapd->conf->default_wep_key_len || | |
264 | hapd->conf->individual_wep_key_len)) | |
265 | privacy = 1; | |
266 | ||
267 | if (hapd->conf->wpa) | |
268 | privacy = 1; | |
269 | ||
270 | if (sta) { | |
271 | int policy, def_klen; | |
272 | if (probe && sta->ssid_probe) { | |
273 | policy = sta->ssid_probe->security_policy; | |
274 | def_klen = sta->ssid_probe->wep.default_len; | |
275 | } else { | |
276 | policy = sta->ssid->security_policy; | |
277 | def_klen = sta->ssid->wep.default_len; | |
278 | } | |
279 | privacy = policy != SECURITY_PLAINTEXT; | |
280 | if (policy == SECURITY_IEEE_802_1X && def_klen == 0) | |
281 | privacy = 0; | |
282 | } | |
283 | ||
284 | if (privacy) | |
285 | capab |= WLAN_CAPABILITY_PRIVACY; | |
286 | ||
287 | if (hapd->iface->current_mode && | |
288 | hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G && | |
289 | hapd->iface->num_sta_no_short_slot_time == 0) | |
290 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; | |
291 | ||
6fc6879b JM |
292 | return capab; |
293 | } | |
294 | ||
295 | ||
5d22a1d5 JM |
296 | #ifdef CONFIG_IEEE80211W |
297 | static u8 * hostapd_eid_assoc_comeback_time(struct hostapd_data *hapd, | |
298 | struct sta_info *sta, u8 *eid) | |
299 | { | |
300 | u8 *pos = eid; | |
45c94154 JM |
301 | u32 timeout, tu; |
302 | struct os_time now, passed; | |
5d22a1d5 JM |
303 | |
304 | *pos++ = WLAN_EID_ASSOC_COMEBACK_TIME; | |
305 | *pos++ = 4; | |
45c94154 JM |
306 | os_get_time(&now); |
307 | os_time_sub(&now, &sta->sa_query_start, &passed); | |
308 | tu = (passed.sec * 1000000 + passed.usec) / 1024; | |
309 | if (hapd->conf->assoc_sa_query_max_timeout > tu) | |
310 | timeout = hapd->conf->assoc_sa_query_max_timeout - tu; | |
311 | else | |
312 | timeout = 0; | |
313 | if (timeout < hapd->conf->assoc_sa_query_max_timeout) | |
314 | timeout++; /* add some extra time for local timers */ | |
5d22a1d5 JM |
315 | WPA_PUT_LE32(pos, timeout); |
316 | pos += 4; | |
317 | ||
318 | return pos; | |
319 | } | |
320 | #endif /* CONFIG_IEEE80211W */ | |
321 | ||
322 | ||
6fc6879b JM |
323 | void ieee802_11_print_ssid(char *buf, const u8 *ssid, u8 len) |
324 | { | |
325 | int i; | |
326 | if (len > HOSTAPD_MAX_SSID_LEN) | |
327 | len = HOSTAPD_MAX_SSID_LEN; | |
328 | for (i = 0; i < len; i++) { | |
329 | if (ssid[i] >= 32 && ssid[i] < 127) | |
330 | buf[i] = ssid[i]; | |
331 | else | |
332 | buf[i] = '.'; | |
333 | } | |
334 | buf[len] = '\0'; | |
335 | } | |
336 | ||
337 | ||
338 | void ieee802_11_send_deauth(struct hostapd_data *hapd, u8 *addr, u16 reason) | |
339 | { | |
340 | struct ieee80211_mgmt mgmt; | |
6fc6879b JM |
341 | |
342 | hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211, | |
343 | HOSTAPD_LEVEL_DEBUG, | |
344 | "deauthenticate - reason %d", reason); | |
6fc6879b JM |
345 | os_memset(&mgmt, 0, sizeof(mgmt)); |
346 | mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, | |
347 | WLAN_FC_STYPE_DEAUTH); | |
348 | os_memcpy(mgmt.da, addr, ETH_ALEN); | |
349 | os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN); | |
350 | os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN); | |
351 | mgmt.u.deauth.reason_code = host_to_le16(reason); | |
352 | if (hostapd_send_mgmt_frame(hapd, &mgmt, IEEE80211_HDRLEN + | |
353 | sizeof(mgmt.u.deauth), 0) < 0) | |
354 | perror("ieee802_11_send_deauth: send"); | |
355 | } | |
356 | ||
357 | ||
6fc6879b JM |
358 | static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta, |
359 | u16 auth_transaction, u8 *challenge, int iswep) | |
360 | { | |
361 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
362 | HOSTAPD_LEVEL_DEBUG, | |
363 | "authentication (shared key, transaction %d)", | |
364 | auth_transaction); | |
365 | ||
366 | if (auth_transaction == 1) { | |
367 | if (!sta->challenge) { | |
368 | /* Generate a pseudo-random challenge */ | |
369 | u8 key[8]; | |
370 | time_t now; | |
371 | int r; | |
372 | sta->challenge = os_zalloc(WLAN_AUTH_CHALLENGE_LEN); | |
373 | if (sta->challenge == NULL) | |
374 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
375 | ||
376 | now = time(NULL); | |
377 | r = random(); | |
378 | os_memcpy(key, &now, 4); | |
379 | os_memcpy(key + 4, &r, 4); | |
380 | rc4(sta->challenge, WLAN_AUTH_CHALLENGE_LEN, | |
381 | key, sizeof(key)); | |
382 | } | |
383 | return 0; | |
384 | } | |
385 | ||
386 | if (auth_transaction != 3) | |
387 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
388 | ||
389 | /* Transaction 3 */ | |
390 | if (!iswep || !sta->challenge || !challenge || | |
391 | os_memcmp(sta->challenge, challenge, WLAN_AUTH_CHALLENGE_LEN)) { | |
392 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
393 | HOSTAPD_LEVEL_INFO, | |
394 | "shared key authentication - invalid " | |
395 | "challenge-response"); | |
396 | return WLAN_STATUS_CHALLENGE_FAIL; | |
397 | } | |
398 | ||
399 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
400 | HOSTAPD_LEVEL_DEBUG, | |
401 | "authentication OK (shared key)"); | |
402 | #ifdef IEEE80211_REQUIRE_AUTH_ACK | |
403 | /* Station will be marked authenticated if it ACKs the | |
404 | * authentication reply. */ | |
405 | #else | |
406 | sta->flags |= WLAN_STA_AUTH; | |
407 | wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH); | |
408 | #endif | |
409 | os_free(sta->challenge); | |
410 | sta->challenge = NULL; | |
411 | ||
412 | return 0; | |
413 | } | |
414 | ||
415 | ||
416 | static void send_auth_reply(struct hostapd_data *hapd, | |
417 | const u8 *dst, const u8 *bssid, | |
418 | u16 auth_alg, u16 auth_transaction, u16 resp, | |
419 | const u8 *ies, size_t ies_len) | |
420 | { | |
421 | struct ieee80211_mgmt *reply; | |
422 | u8 *buf; | |
423 | size_t rlen; | |
424 | ||
425 | rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth) + ies_len; | |
426 | buf = os_zalloc(rlen); | |
427 | if (buf == NULL) | |
428 | return; | |
429 | ||
430 | reply = (struct ieee80211_mgmt *) buf; | |
431 | reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, | |
432 | WLAN_FC_STYPE_AUTH); | |
6fc6879b JM |
433 | os_memcpy(reply->da, dst, ETH_ALEN); |
434 | os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN); | |
435 | os_memcpy(reply->bssid, bssid, ETH_ALEN); | |
436 | ||
437 | reply->u.auth.auth_alg = host_to_le16(auth_alg); | |
438 | reply->u.auth.auth_transaction = host_to_le16(auth_transaction); | |
439 | reply->u.auth.status_code = host_to_le16(resp); | |
440 | ||
441 | if (ies && ies_len) | |
442 | os_memcpy(reply->u.auth.variable, ies, ies_len); | |
443 | ||
444 | wpa_printf(MSG_DEBUG, "authentication reply: STA=" MACSTR | |
445 | " auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu)", | |
446 | MAC2STR(dst), auth_alg, auth_transaction, | |
447 | resp, (unsigned long) ies_len); | |
448 | if (hostapd_send_mgmt_frame(hapd, reply, rlen, 0) < 0) | |
449 | perror("send_auth_reply: send"); | |
450 | ||
451 | os_free(buf); | |
452 | } | |
453 | ||
454 | ||
455 | #ifdef CONFIG_IEEE80211R | |
456 | static void handle_auth_ft_finish(void *ctx, const u8 *dst, const u8 *bssid, | |
457 | u16 auth_transaction, u16 status, | |
458 | const u8 *ies, size_t ies_len) | |
459 | { | |
460 | struct hostapd_data *hapd = ctx; | |
461 | struct sta_info *sta; | |
462 | ||
463 | send_auth_reply(hapd, dst, bssid, WLAN_AUTH_FT, auth_transaction, | |
464 | status, ies, ies_len); | |
465 | ||
466 | if (status != WLAN_STATUS_SUCCESS) | |
467 | return; | |
468 | ||
469 | sta = ap_get_sta(hapd, dst); | |
470 | if (sta == NULL) | |
471 | return; | |
472 | ||
473 | hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211, | |
474 | HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)"); | |
475 | sta->flags |= WLAN_STA_AUTH; | |
476 | mlme_authenticate_indication(hapd, sta); | |
477 | } | |
478 | #endif /* CONFIG_IEEE80211R */ | |
479 | ||
480 | ||
481 | static void handle_auth(struct hostapd_data *hapd, struct ieee80211_mgmt *mgmt, | |
482 | size_t len) | |
483 | { | |
484 | u16 auth_alg, auth_transaction, status_code; | |
485 | u16 resp = WLAN_STATUS_SUCCESS; | |
486 | struct sta_info *sta = NULL; | |
487 | int res; | |
488 | u16 fc; | |
489 | u8 *challenge = NULL; | |
490 | u32 session_timeout, acct_interim_interval; | |
491 | int vlan_id = 0; | |
492 | u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN]; | |
493 | size_t resp_ies_len = 0; | |
494 | ||
495 | if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) { | |
496 | printf("handle_auth - too short payload (len=%lu)\n", | |
497 | (unsigned long) len); | |
498 | return; | |
499 | } | |
500 | ||
501 | auth_alg = le_to_host16(mgmt->u.auth.auth_alg); | |
502 | auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction); | |
503 | status_code = le_to_host16(mgmt->u.auth.status_code); | |
504 | fc = le_to_host16(mgmt->frame_control); | |
505 | ||
506 | if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) + | |
507 | 2 + WLAN_AUTH_CHALLENGE_LEN && | |
508 | mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE && | |
509 | mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN) | |
510 | challenge = &mgmt->u.auth.variable[2]; | |
511 | ||
512 | wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d " | |
513 | "auth_transaction=%d status_code=%d wep=%d%s", | |
514 | MAC2STR(mgmt->sa), auth_alg, auth_transaction, | |
515 | status_code, !!(fc & WLAN_FC_ISWEP), | |
516 | challenge ? " challenge" : ""); | |
517 | ||
6fc6879b JM |
518 | if (hapd->tkip_countermeasures) { |
519 | resp = WLAN_REASON_MICHAEL_MIC_FAILURE; | |
520 | goto fail; | |
521 | } | |
522 | ||
523 | if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) && | |
524 | auth_alg == WLAN_AUTH_OPEN) || | |
525 | #ifdef CONFIG_IEEE80211R | |
526 | (hapd->conf->wpa && | |
527 | (hapd->conf->wpa_key_mgmt & | |
528 | (WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_FT_PSK)) && | |
529 | auth_alg == WLAN_AUTH_FT) || | |
530 | #endif /* CONFIG_IEEE80211R */ | |
531 | ((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) && | |
532 | auth_alg == WLAN_AUTH_SHARED_KEY))) { | |
533 | printf("Unsupported authentication algorithm (%d)\n", | |
534 | auth_alg); | |
535 | resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG; | |
536 | goto fail; | |
537 | } | |
538 | ||
539 | if (!(auth_transaction == 1 || | |
540 | (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) { | |
541 | printf("Unknown authentication transaction number (%d)\n", | |
542 | auth_transaction); | |
543 | resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION; | |
544 | goto fail; | |
545 | } | |
546 | ||
547 | if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) { | |
548 | printf("Station " MACSTR " not allowed to authenticate.\n", | |
549 | MAC2STR(mgmt->sa)); | |
550 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
551 | goto fail; | |
552 | } | |
553 | ||
554 | res = hostapd_allowed_address(hapd, mgmt->sa, (u8 *) mgmt, len, | |
555 | &session_timeout, | |
556 | &acct_interim_interval, &vlan_id); | |
557 | if (res == HOSTAPD_ACL_REJECT) { | |
558 | printf("Station " MACSTR " not allowed to authenticate.\n", | |
559 | MAC2STR(mgmt->sa)); | |
560 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
561 | goto fail; | |
562 | } | |
563 | if (res == HOSTAPD_ACL_PENDING) { | |
564 | wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR | |
565 | " waiting for an external authentication", | |
566 | MAC2STR(mgmt->sa)); | |
567 | /* Authentication code will re-send the authentication frame | |
568 | * after it has received (and cached) information from the | |
569 | * external source. */ | |
570 | return; | |
571 | } | |
572 | ||
573 | sta = ap_sta_add(hapd, mgmt->sa); | |
574 | if (!sta) { | |
575 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
576 | goto fail; | |
577 | } | |
578 | ||
579 | if (vlan_id > 0) { | |
580 | if (hostapd_get_vlan_id_ifname(hapd->conf->vlan, | |
581 | sta->vlan_id) == NULL) { | |
582 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS, | |
583 | HOSTAPD_LEVEL_INFO, "Invalid VLAN ID " | |
584 | "%d received from RADIUS server", | |
585 | vlan_id); | |
586 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
587 | goto fail; | |
588 | } | |
589 | sta->vlan_id = vlan_id; | |
590 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS, | |
591 | HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id); | |
592 | } | |
593 | ||
594 | sta->flags &= ~WLAN_STA_PREAUTH; | |
595 | ieee802_1x_notify_pre_auth(sta->eapol_sm, 0); | |
596 | ||
597 | if (hapd->conf->radius->acct_interim_interval == 0 && | |
598 | acct_interim_interval) | |
599 | sta->acct_interim_interval = acct_interim_interval; | |
600 | if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT) | |
601 | ap_sta_session_timeout(hapd, sta, session_timeout); | |
602 | else | |
603 | ap_sta_no_session_timeout(hapd, sta); | |
604 | ||
605 | switch (auth_alg) { | |
606 | case WLAN_AUTH_OPEN: | |
607 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
608 | HOSTAPD_LEVEL_DEBUG, | |
609 | "authentication OK (open system)"); | |
610 | #ifdef IEEE80211_REQUIRE_AUTH_ACK | |
611 | /* Station will be marked authenticated if it ACKs the | |
612 | * authentication reply. */ | |
613 | #else | |
614 | sta->flags |= WLAN_STA_AUTH; | |
615 | wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH); | |
616 | sta->auth_alg = WLAN_AUTH_OPEN; | |
617 | mlme_authenticate_indication(hapd, sta); | |
618 | #endif | |
619 | break; | |
620 | case WLAN_AUTH_SHARED_KEY: | |
621 | resp = auth_shared_key(hapd, sta, auth_transaction, challenge, | |
622 | fc & WLAN_FC_ISWEP); | |
623 | sta->auth_alg = WLAN_AUTH_SHARED_KEY; | |
624 | mlme_authenticate_indication(hapd, sta); | |
625 | if (sta->challenge && auth_transaction == 1) { | |
626 | resp_ies[0] = WLAN_EID_CHALLENGE; | |
627 | resp_ies[1] = WLAN_AUTH_CHALLENGE_LEN; | |
628 | os_memcpy(resp_ies + 2, sta->challenge, | |
629 | WLAN_AUTH_CHALLENGE_LEN); | |
630 | resp_ies_len = 2 + WLAN_AUTH_CHALLENGE_LEN; | |
631 | } | |
632 | break; | |
633 | #ifdef CONFIG_IEEE80211R | |
634 | case WLAN_AUTH_FT: | |
635 | sta->auth_alg = WLAN_AUTH_FT; | |
636 | if (sta->wpa_sm == NULL) | |
637 | sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, | |
638 | sta->addr); | |
639 | if (sta->wpa_sm == NULL) { | |
640 | wpa_printf(MSG_DEBUG, "FT: Failed to initialize WPA " | |
641 | "state machine"); | |
642 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
643 | goto fail; | |
644 | } | |
645 | wpa_ft_process_auth(sta->wpa_sm, mgmt->bssid, | |
646 | auth_transaction, mgmt->u.auth.variable, | |
647 | len - IEEE80211_HDRLEN - | |
648 | sizeof(mgmt->u.auth), | |
649 | handle_auth_ft_finish, hapd); | |
650 | /* handle_auth_ft_finish() callback will complete auth. */ | |
651 | return; | |
652 | #endif /* CONFIG_IEEE80211R */ | |
653 | } | |
654 | ||
655 | fail: | |
656 | send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg, | |
657 | auth_transaction + 1, resp, resp_ies, resp_ies_len); | |
658 | } | |
659 | ||
660 | ||
661 | static void handle_assoc(struct hostapd_data *hapd, | |
662 | struct ieee80211_mgmt *mgmt, size_t len, int reassoc) | |
663 | { | |
664 | u16 capab_info, listen_interval; | |
665 | u16 resp = WLAN_STATUS_SUCCESS; | |
666 | u8 *pos, *wpa_ie; | |
667 | size_t wpa_ie_len; | |
668 | int send_deauth = 0, send_len, left, i; | |
669 | struct sta_info *sta; | |
670 | struct ieee802_11_elems elems; | |
671 | u8 buf[sizeof(struct ieee80211_mgmt) + 512]; | |
672 | struct ieee80211_mgmt *reply; | |
673 | ||
674 | if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) : | |
675 | sizeof(mgmt->u.assoc_req))) { | |
676 | printf("handle_assoc(reassoc=%d) - too short payload (len=%lu)" | |
677 | "\n", reassoc, (unsigned long) len); | |
678 | return; | |
679 | } | |
680 | ||
681 | if (reassoc) { | |
682 | capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info); | |
683 | listen_interval = le_to_host16( | |
684 | mgmt->u.reassoc_req.listen_interval); | |
685 | wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR | |
686 | " capab_info=0x%02x listen_interval=%d current_ap=" | |
687 | MACSTR, | |
688 | MAC2STR(mgmt->sa), capab_info, listen_interval, | |
689 | MAC2STR(mgmt->u.reassoc_req.current_ap)); | |
690 | left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req)); | |
691 | pos = mgmt->u.reassoc_req.variable; | |
692 | } else { | |
693 | capab_info = le_to_host16(mgmt->u.assoc_req.capab_info); | |
694 | listen_interval = le_to_host16( | |
695 | mgmt->u.assoc_req.listen_interval); | |
696 | wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR | |
697 | " capab_info=0x%02x listen_interval=%d", | |
698 | MAC2STR(mgmt->sa), capab_info, listen_interval); | |
699 | left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req)); | |
700 | pos = mgmt->u.assoc_req.variable; | |
701 | } | |
702 | ||
703 | sta = ap_get_sta(hapd, mgmt->sa); | |
704 | #ifdef CONFIG_IEEE80211R | |
705 | if (sta && sta->auth_alg == WLAN_AUTH_FT && | |
706 | (sta->flags & WLAN_STA_AUTH) == 0) { | |
707 | wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate " | |
708 | "prior to authentication since it is using " | |
709 | "over-the-DS FT", MAC2STR(mgmt->sa)); | |
710 | } else | |
711 | #endif /* CONFIG_IEEE80211R */ | |
712 | if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) { | |
713 | printf("STA " MACSTR " trying to associate before " | |
714 | "authentication\n", MAC2STR(mgmt->sa)); | |
715 | if (sta) { | |
716 | printf(" sta: addr=" MACSTR " aid=%d flags=0x%04x\n", | |
717 | MAC2STR(sta->addr), sta->aid, sta->flags); | |
718 | } | |
719 | send_deauth = 1; | |
720 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
721 | goto fail; | |
722 | } | |
723 | ||
724 | if (hapd->tkip_countermeasures) { | |
725 | resp = WLAN_REASON_MICHAEL_MIC_FAILURE; | |
726 | goto fail; | |
727 | } | |
728 | ||
b0194fe0 JM |
729 | if (listen_interval > hapd->conf->max_listen_interval) { |
730 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
731 | HOSTAPD_LEVEL_DEBUG, | |
732 | "Too large Listen Interval (%d)", | |
733 | listen_interval); | |
734 | resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE; | |
735 | goto fail; | |
736 | } | |
737 | ||
6fc6879b | 738 | sta->capability = capab_info; |
39e50be0 | 739 | sta->listen_interval = listen_interval; |
6fc6879b | 740 | |
de9289c8 JM |
741 | /* followed by SSID and Supported rates; and HT capabilities if 802.11n |
742 | * is used */ | |
3d536eb4 JM |
743 | if (ieee802_11_parse_elems(pos, left, &elems, 1) == ParseFailed || |
744 | !elems.ssid) { | |
6fc6879b JM |
745 | printf("STA " MACSTR " sent invalid association request\n", |
746 | MAC2STR(sta->addr)); | |
747 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
748 | goto fail; | |
749 | } | |
750 | ||
751 | if (elems.ssid_len != hapd->conf->ssid.ssid_len || | |
752 | os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) != 0) | |
753 | { | |
754 | char ssid_txt[33]; | |
755 | ieee802_11_print_ssid(ssid_txt, elems.ssid, elems.ssid_len); | |
756 | printf("Station " MACSTR " tried to associate with " | |
757 | "unknown SSID '%s'\n", MAC2STR(sta->addr), ssid_txt); | |
758 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
759 | goto fail; | |
760 | } | |
761 | ||
762 | sta->flags &= ~WLAN_STA_WME; | |
763 | if (elems.wme && hapd->conf->wme_enabled) { | |
764 | if (hostapd_eid_wme_valid(hapd, elems.wme, elems.wme_len)) | |
765 | hostapd_logger(hapd, sta->addr, | |
766 | HOSTAPD_MODULE_WPA, | |
767 | HOSTAPD_LEVEL_DEBUG, | |
768 | "invalid WME element in association " | |
769 | "request"); | |
770 | else | |
771 | sta->flags |= WLAN_STA_WME; | |
772 | } | |
773 | ||
774 | if (!elems.supp_rates) { | |
775 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
776 | HOSTAPD_LEVEL_DEBUG, | |
777 | "No supported rates element in AssocReq"); | |
778 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
779 | goto fail; | |
780 | } | |
781 | ||
782 | if (elems.supp_rates_len > sizeof(sta->supported_rates)) { | |
783 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
784 | HOSTAPD_LEVEL_DEBUG, | |
785 | "Invalid supported rates element length %d", | |
786 | elems.supp_rates_len); | |
787 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
788 | goto fail; | |
789 | } | |
790 | ||
791 | os_memset(sta->supported_rates, 0, sizeof(sta->supported_rates)); | |
792 | os_memcpy(sta->supported_rates, elems.supp_rates, | |
793 | elems.supp_rates_len); | |
794 | sta->supported_rates_len = elems.supp_rates_len; | |
795 | ||
796 | if (elems.ext_supp_rates) { | |
797 | if (elems.supp_rates_len + elems.ext_supp_rates_len > | |
798 | sizeof(sta->supported_rates)) { | |
799 | hostapd_logger(hapd, mgmt->sa, | |
800 | HOSTAPD_MODULE_IEEE80211, | |
801 | HOSTAPD_LEVEL_DEBUG, | |
802 | "Invalid supported rates element length" | |
803 | " %d+%d", elems.supp_rates_len, | |
804 | elems.ext_supp_rates_len); | |
805 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
806 | goto fail; | |
807 | } | |
808 | ||
809 | os_memcpy(sta->supported_rates + elems.supp_rates_len, | |
810 | elems.ext_supp_rates, elems.ext_supp_rates_len); | |
811 | sta->supported_rates_len += elems.ext_supp_rates_len; | |
812 | } | |
813 | ||
de9289c8 JM |
814 | #ifdef CONFIG_IEEE80211N |
815 | /* save HT capabilities in the sta object */ | |
816 | os_memset(&sta->ht_capabilities, 0, sizeof(sta->ht_capabilities)); | |
817 | if (elems.ht_capabilities && | |
f130ba9b JM |
818 | elems.ht_capabilities_len >= |
819 | sizeof(struct ieee80211_ht_capability)) { | |
de9289c8 JM |
820 | sta->flags |= WLAN_STA_HT; |
821 | sta->ht_capabilities.id = WLAN_EID_HT_CAP; | |
822 | sta->ht_capabilities.length = | |
823 | sizeof(struct ieee80211_ht_capability); | |
824 | os_memcpy(&sta->ht_capabilities.data, | |
825 | elems.ht_capabilities, | |
826 | sizeof(struct ieee80211_ht_capability)); | |
827 | } else | |
828 | sta->flags &= ~WLAN_STA_HT; | |
829 | #endif /* CONFIG_IEEE80211N */ | |
830 | ||
6fc6879b JM |
831 | if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) { |
832 | wpa_ie = elems.rsn_ie; | |
833 | wpa_ie_len = elems.rsn_ie_len; | |
834 | } else if ((hapd->conf->wpa & WPA_PROTO_WPA) && | |
835 | elems.wpa_ie) { | |
836 | wpa_ie = elems.wpa_ie; | |
837 | wpa_ie_len = elems.wpa_ie_len; | |
838 | } else { | |
839 | wpa_ie = NULL; | |
840 | wpa_ie_len = 0; | |
841 | } | |
ad08c363 | 842 | #ifdef CONFIG_WPS |
a8d05fca | 843 | sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS); |
ad08c363 JM |
844 | if (hapd->conf->wps_state && wpa_ie == NULL) { |
845 | if (elems.wps_ie) { | |
846 | wpa_printf(MSG_DEBUG, "STA included WPS IE in " | |
847 | "(Re)Association Request - assume WPS is " | |
848 | "used"); | |
849 | sta->flags |= WLAN_STA_WPS; | |
eb76b7e3 JM |
850 | wpabuf_free(sta->wps_ie); |
851 | sta->wps_ie = wpabuf_alloc_copy(elems.wps_ie + 4, | |
852 | elems.wps_ie_len - 4); | |
ad08c363 JM |
853 | } else { |
854 | wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE " | |
855 | "in (Re)Association Request - possible WPS " | |
856 | "use"); | |
857 | sta->flags |= WLAN_STA_MAYBE_WPS; | |
858 | } | |
859 | } else | |
860 | #endif /* CONFIG_WPS */ | |
6fc6879b JM |
861 | if (hapd->conf->wpa && wpa_ie == NULL) { |
862 | printf("STA " MACSTR ": No WPA/RSN IE in association " | |
863 | "request\n", MAC2STR(sta->addr)); | |
864 | resp = WLAN_STATUS_INVALID_IE; | |
865 | goto fail; | |
866 | } | |
867 | ||
868 | if (hapd->conf->wpa && wpa_ie) { | |
869 | int res; | |
870 | wpa_ie -= 2; | |
871 | wpa_ie_len += 2; | |
872 | if (sta->wpa_sm == NULL) | |
873 | sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, | |
874 | sta->addr); | |
875 | if (sta->wpa_sm == NULL) { | |
876 | printf("Failed to initialize WPA state machine\n"); | |
877 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
878 | goto fail; | |
879 | } | |
880 | res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm, | |
881 | wpa_ie, wpa_ie_len, | |
882 | elems.mdie, elems.mdie_len); | |
883 | if (res == WPA_INVALID_GROUP) | |
884 | resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID; | |
885 | else if (res == WPA_INVALID_PAIRWISE) | |
886 | resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID; | |
887 | else if (res == WPA_INVALID_AKMP) | |
888 | resp = WLAN_STATUS_AKMP_NOT_VALID; | |
889 | else if (res == WPA_ALLOC_FAIL) | |
890 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
891 | #ifdef CONFIG_IEEE80211W | |
892 | else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION) | |
9a9876bf | 893 | resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION; |
6fc6879b | 894 | else if (res == WPA_INVALID_MGMT_GROUP_CIPHER) |
9a9876bf | 895 | resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION; |
6fc6879b JM |
896 | #endif /* CONFIG_IEEE80211W */ |
897 | else if (res == WPA_INVALID_MDIE) | |
898 | resp = WLAN_STATUS_INVALID_MDIE; | |
899 | else if (res != WPA_IE_OK) | |
900 | resp = WLAN_STATUS_INVALID_IE; | |
901 | if (resp != WLAN_STATUS_SUCCESS) | |
902 | goto fail; | |
f3f7540e | 903 | #ifdef CONFIG_IEEE80211W |
45c94154 JM |
904 | if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out && |
905 | sta->sa_query_count > 0) | |
906 | ap_check_sa_query_timeout(hapd, sta); | |
8f4617c6 JM |
907 | if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out && |
908 | (!reassoc || sta->auth_alg != WLAN_AUTH_FT)) { | |
5d22a1d5 | 909 | /* |
93b76319 JM |
910 | * STA has already been associated with MFP and SA |
911 | * Query timeout has not been reached. Reject the | |
912 | * association attempt temporarily and start SA Query, | |
913 | * if one is not pending. | |
5d22a1d5 JM |
914 | */ |
915 | ||
93b76319 JM |
916 | if (sta->sa_query_count == 0) |
917 | ap_sta_start_sa_query(hapd, sta); | |
5d22a1d5 JM |
918 | |
919 | resp = WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY; | |
920 | goto fail; | |
921 | } | |
922 | ||
f3f7540e JM |
923 | if (wpa_auth_uses_mfp(sta->wpa_sm)) |
924 | sta->flags |= WLAN_STA_MFP; | |
925 | else | |
926 | sta->flags &= ~WLAN_STA_MFP; | |
927 | #endif /* CONFIG_IEEE80211W */ | |
6fc6879b JM |
928 | |
929 | #ifdef CONFIG_IEEE80211R | |
930 | if (sta->auth_alg == WLAN_AUTH_FT) { | |
931 | if (!reassoc) { | |
932 | wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried " | |
933 | "to use association (not " | |
934 | "re-association) with FT auth_alg", | |
935 | MAC2STR(sta->addr)); | |
936 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
937 | goto fail; | |
938 | } | |
939 | ||
940 | resp = wpa_ft_validate_reassoc(sta->wpa_sm, pos, left); | |
941 | if (resp != WLAN_STATUS_SUCCESS) | |
942 | goto fail; | |
943 | } | |
944 | #endif /* CONFIG_IEEE80211R */ | |
ff36ff00 JM |
945 | #ifdef CONFIG_IEEE80211N |
946 | if ((sta->flags & WLAN_STA_HT) && | |
947 | wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) { | |
948 | wpa_printf(MSG_DEBUG, "HT: " MACSTR " tried to " | |
949 | "use TKIP with HT association", | |
950 | MAC2STR(sta->addr)); | |
951 | resp = WLAN_STATUS_CIPHER_REJECTED_PER_POLICY; | |
952 | goto fail; | |
953 | } | |
954 | #endif /* CONFIG_IEEE80211N */ | |
a8d05fca JM |
955 | } else |
956 | wpa_auth_sta_no_wpa(sta->wpa_sm); | |
6fc6879b | 957 | |
6fc6879b JM |
958 | if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G) |
959 | sta->flags |= WLAN_STA_NONERP; | |
960 | for (i = 0; i < sta->supported_rates_len; i++) { | |
961 | if ((sta->supported_rates[i] & 0x7f) > 22) { | |
962 | sta->flags &= ~WLAN_STA_NONERP; | |
963 | break; | |
964 | } | |
965 | } | |
966 | if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) { | |
967 | sta->nonerp_set = 1; | |
968 | hapd->iface->num_sta_non_erp++; | |
969 | if (hapd->iface->num_sta_non_erp == 1) | |
970 | ieee802_11_set_beacons(hapd->iface); | |
971 | } | |
972 | ||
973 | if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) && | |
974 | !sta->no_short_slot_time_set) { | |
975 | sta->no_short_slot_time_set = 1; | |
976 | hapd->iface->num_sta_no_short_slot_time++; | |
977 | if (hapd->iface->current_mode->mode == | |
978 | HOSTAPD_MODE_IEEE80211G && | |
979 | hapd->iface->num_sta_no_short_slot_time == 1) | |
980 | ieee802_11_set_beacons(hapd->iface); | |
981 | } | |
982 | ||
983 | if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) | |
984 | sta->flags |= WLAN_STA_SHORT_PREAMBLE; | |
985 | else | |
986 | sta->flags &= ~WLAN_STA_SHORT_PREAMBLE; | |
987 | ||
988 | if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) && | |
989 | !sta->no_short_preamble_set) { | |
990 | sta->no_short_preamble_set = 1; | |
991 | hapd->iface->num_sta_no_short_preamble++; | |
992 | if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G | |
993 | && hapd->iface->num_sta_no_short_preamble == 1) | |
994 | ieee802_11_set_beacons(hapd->iface); | |
995 | } | |
996 | ||
de9289c8 JM |
997 | #ifdef CONFIG_IEEE80211N |
998 | if (sta->flags & WLAN_STA_HT) { | |
8725598c JM |
999 | u16 ht_capab = le_to_host16( |
1000 | sta->ht_capabilities.data.capabilities_info); | |
1001 | wpa_printf(MSG_DEBUG, "HT: STA " MACSTR " HT Capabilities " | |
1002 | "Info: 0x%04x", MAC2STR(sta->addr), ht_capab); | |
1003 | if ((ht_capab & HT_CAP_INFO_GREEN_FIELD) == 0) { | |
e8ff1e59 JM |
1004 | if (!sta->no_ht_gf_set) { |
1005 | sta->no_ht_gf_set = 1; | |
1006 | hapd->iface->num_sta_ht_no_gf++; | |
1007 | } | |
de9289c8 JM |
1008 | wpa_printf(MSG_DEBUG, "%s STA " MACSTR " - no " |
1009 | "greenfield, num of non-gf stations %d", | |
1010 | __func__, MAC2STR(sta->addr), | |
1011 | hapd->iface->num_sta_ht_no_gf); | |
1012 | } | |
8725598c | 1013 | if ((ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET) == 0) { |
e8ff1e59 JM |
1014 | if (!sta->ht_20mhz_set) { |
1015 | sta->ht_20mhz_set = 1; | |
1016 | hapd->iface->num_sta_ht_20mhz++; | |
1017 | } | |
de9289c8 JM |
1018 | wpa_printf(MSG_DEBUG, "%s STA " MACSTR " - 20 MHz HT, " |
1019 | "num of 20MHz HT STAs %d", | |
1020 | __func__, MAC2STR(sta->addr), | |
1021 | hapd->iface->num_sta_ht_20mhz); | |
1022 | } | |
1023 | } else { | |
e8ff1e59 JM |
1024 | if (!sta->no_ht_set) { |
1025 | sta->no_ht_set = 1; | |
1026 | hapd->iface->num_sta_no_ht++; | |
1027 | } | |
9d2a76a2 | 1028 | if (hapd->iconf->ieee80211n) { |
de9289c8 JM |
1029 | wpa_printf(MSG_DEBUG, "%s STA " MACSTR |
1030 | " - no HT, num of non-HT stations %d", | |
1031 | __func__, MAC2STR(sta->addr), | |
1032 | hapd->iface->num_sta_no_ht); | |
1033 | } | |
1034 | } | |
1035 | ||
1036 | if (hostapd_ht_operation_update(hapd->iface) > 0) | |
1037 | ieee802_11_set_beacons(hapd->iface); | |
1038 | #endif /* CONFIG_IEEE80211N */ | |
1039 | ||
6fc6879b JM |
1040 | /* get a unique AID */ |
1041 | if (sta->aid > 0) { | |
1042 | wpa_printf(MSG_DEBUG, " old AID %d", sta->aid); | |
1043 | } else { | |
1044 | for (sta->aid = 1; sta->aid <= MAX_AID_TABLE_SIZE; sta->aid++) | |
1045 | if (hapd->sta_aid[sta->aid - 1] == NULL) | |
1046 | break; | |
1047 | if (sta->aid > MAX_AID_TABLE_SIZE) { | |
1048 | sta->aid = 0; | |
1049 | resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA; | |
1050 | wpa_printf(MSG_ERROR, " no room for more AIDs"); | |
1051 | goto fail; | |
1052 | } else { | |
1053 | hapd->sta_aid[sta->aid - 1] = sta; | |
1054 | wpa_printf(MSG_DEBUG, " new AID %d", sta->aid); | |
1055 | } | |
1056 | } | |
1057 | ||
1058 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
1059 | HOSTAPD_LEVEL_DEBUG, | |
1060 | "association OK (aid %d)", sta->aid); | |
1061 | /* Station will be marked associated, after it acknowledges AssocResp | |
1062 | */ | |
1063 | ||
1e858f69 JM |
1064 | if (reassoc) { |
1065 | os_memcpy(sta->previous_ap, mgmt->u.reassoc_req.current_ap, | |
1066 | ETH_ALEN); | |
1067 | } | |
1068 | ||
6fc6879b JM |
1069 | if (sta->last_assoc_req) |
1070 | os_free(sta->last_assoc_req); | |
1071 | sta->last_assoc_req = os_malloc(len); | |
1072 | if (sta->last_assoc_req) | |
1073 | os_memcpy(sta->last_assoc_req, mgmt, len); | |
1074 | ||
1075 | /* Make sure that the previously registered inactivity timer will not | |
1076 | * remove the STA immediately. */ | |
1077 | sta->timeout_next = STA_NULLFUNC; | |
1078 | ||
1079 | fail: | |
1080 | os_memset(buf, 0, sizeof(buf)); | |
1081 | reply = (struct ieee80211_mgmt *) buf; | |
1082 | reply->frame_control = | |
1083 | IEEE80211_FC(WLAN_FC_TYPE_MGMT, | |
1084 | (send_deauth ? WLAN_FC_STYPE_DEAUTH : | |
1085 | (reassoc ? WLAN_FC_STYPE_REASSOC_RESP : | |
1086 | WLAN_FC_STYPE_ASSOC_RESP))); | |
1087 | os_memcpy(reply->da, mgmt->sa, ETH_ALEN); | |
1088 | os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN); | |
1089 | os_memcpy(reply->bssid, mgmt->bssid, ETH_ALEN); | |
1090 | ||
1091 | send_len = IEEE80211_HDRLEN; | |
1092 | if (send_deauth) { | |
1093 | send_len += sizeof(reply->u.deauth); | |
1094 | reply->u.deauth.reason_code = host_to_le16(resp); | |
1095 | } else { | |
1096 | u8 *p; | |
1097 | send_len += sizeof(reply->u.assoc_resp); | |
1098 | reply->u.assoc_resp.capab_info = | |
1099 | host_to_le16(hostapd_own_capab_info(hapd, sta, 0)); | |
1100 | reply->u.assoc_resp.status_code = host_to_le16(resp); | |
1101 | reply->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0) | |
1102 | | BIT(14) | BIT(15)); | |
1103 | /* Supported rates */ | |
1104 | p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable); | |
1105 | /* Extended supported rates */ | |
1106 | p = hostapd_eid_ext_supp_rates(hapd, p); | |
1107 | if (sta->flags & WLAN_STA_WME) | |
1108 | p = hostapd_eid_wme(hapd, p); | |
1109 | ||
9d2a76a2 JM |
1110 | p = hostapd_eid_ht_capabilities_info(hapd, p); |
1111 | p = hostapd_eid_ht_operation(hapd, p); | |
de9289c8 | 1112 | |
6fc6879b JM |
1113 | #ifdef CONFIG_IEEE80211R |
1114 | if (resp == WLAN_STATUS_SUCCESS) { | |
1115 | /* IEEE 802.11r: Mobility Domain Information, Fast BSS | |
1116 | * Transition Information, RSN */ | |
1117 | p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p, | |
1118 | buf + sizeof(buf) - p, | |
1119 | sta->auth_alg); | |
1120 | } | |
1121 | #endif /* CONFIG_IEEE80211R */ | |
1122 | ||
5d22a1d5 JM |
1123 | #ifdef CONFIG_IEEE80211W |
1124 | if (resp == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY) | |
1125 | p = hostapd_eid_assoc_comeback_time(hapd, sta, p); | |
1126 | #endif /* CONFIG_IEEE80211W */ | |
1127 | ||
6fc6879b | 1128 | send_len += p - reply->u.assoc_resp.variable; |
6fc6879b JM |
1129 | } |
1130 | ||
1131 | if (hostapd_send_mgmt_frame(hapd, reply, send_len, 0) < 0) | |
1132 | perror("handle_assoc: send"); | |
1133 | } | |
1134 | ||
1135 | ||
6fc6879b JM |
1136 | static void handle_disassoc(struct hostapd_data *hapd, |
1137 | struct ieee80211_mgmt *mgmt, size_t len) | |
1138 | { | |
1139 | struct sta_info *sta; | |
1140 | ||
1141 | if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) { | |
1142 | printf("handle_disassoc - too short payload (len=%lu)\n", | |
1143 | (unsigned long) len); | |
1144 | return; | |
1145 | } | |
1146 | ||
1147 | wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d", | |
1148 | MAC2STR(mgmt->sa), | |
1149 | le_to_host16(mgmt->u.disassoc.reason_code)); | |
1150 | ||
6fc6879b JM |
1151 | sta = ap_get_sta(hapd, mgmt->sa); |
1152 | if (sta == NULL) { | |
1153 | printf("Station " MACSTR " trying to disassociate, but it " | |
1154 | "is not associated.\n", MAC2STR(mgmt->sa)); | |
1155 | return; | |
1156 | } | |
1157 | ||
1158 | sta->flags &= ~WLAN_STA_ASSOC; | |
1159 | wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC); | |
1160 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
1161 | HOSTAPD_LEVEL_INFO, "disassociated"); | |
1162 | sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST; | |
1163 | ieee802_1x_notify_port_enabled(sta->eapol_sm, 0); | |
1164 | /* Stop Accounting and IEEE 802.1X sessions, but leave the STA | |
1165 | * authenticated. */ | |
1166 | accounting_sta_stop(hapd, sta); | |
1167 | ieee802_1x_free_station(sta); | |
1168 | hostapd_sta_remove(hapd, sta->addr); | |
1169 | ||
1170 | if (sta->timeout_next == STA_NULLFUNC || | |
1171 | sta->timeout_next == STA_DISASSOC) { | |
1172 | sta->timeout_next = STA_DEAUTH; | |
1173 | eloop_cancel_timeout(ap_handle_timer, hapd, sta); | |
1174 | eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer, | |
1175 | hapd, sta); | |
1176 | } | |
1177 | ||
1178 | mlme_disassociate_indication( | |
1179 | hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code)); | |
1180 | } | |
1181 | ||
1182 | ||
1183 | static void handle_deauth(struct hostapd_data *hapd, | |
1184 | struct ieee80211_mgmt *mgmt, size_t len) | |
1185 | { | |
1186 | struct sta_info *sta; | |
1187 | ||
1188 | if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) { | |
1189 | printf("handle_deauth - too short payload (len=%lu)\n", | |
1190 | (unsigned long) len); | |
1191 | return; | |
1192 | } | |
1193 | ||
1194 | wpa_printf(MSG_DEBUG, "deauthentication: STA=" MACSTR | |
1195 | " reason_code=%d", | |
1196 | MAC2STR(mgmt->sa), | |
1197 | le_to_host16(mgmt->u.deauth.reason_code)); | |
1198 | ||
6fc6879b JM |
1199 | sta = ap_get_sta(hapd, mgmt->sa); |
1200 | if (sta == NULL) { | |
1201 | printf("Station " MACSTR " trying to deauthenticate, but it " | |
1202 | "is not authenticated.\n", MAC2STR(mgmt->sa)); | |
1203 | return; | |
1204 | } | |
1205 | ||
1206 | sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC); | |
1207 | wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH); | |
1208 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
1209 | HOSTAPD_LEVEL_DEBUG, "deauthenticated"); | |
1210 | mlme_deauthenticate_indication( | |
1211 | hapd, sta, le_to_host16(mgmt->u.deauth.reason_code)); | |
1212 | sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST; | |
1213 | ieee802_1x_notify_port_enabled(sta->eapol_sm, 0); | |
1214 | ap_free_sta(hapd, sta); | |
1215 | } | |
1216 | ||
1217 | ||
1218 | static void handle_beacon(struct hostapd_data *hapd, | |
1219 | struct ieee80211_mgmt *mgmt, size_t len, | |
1220 | struct hostapd_frame_info *fi) | |
1221 | { | |
1222 | struct ieee802_11_elems elems; | |
1223 | ||
1224 | if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) { | |
1225 | printf("handle_beacon - too short payload (len=%lu)\n", | |
1226 | (unsigned long) len); | |
1227 | return; | |
1228 | } | |
1229 | ||
3d536eb4 | 1230 | (void) ieee802_11_parse_elems(mgmt->u.beacon.variable, |
6fc6879b JM |
1231 | len - (IEEE80211_HDRLEN + |
1232 | sizeof(mgmt->u.beacon)), &elems, | |
1233 | 0); | |
1234 | ||
6fc6879b JM |
1235 | ap_list_process_beacon(hapd->iface, mgmt, &elems, fi); |
1236 | } | |
1237 | ||
1238 | ||
5d22a1d5 | 1239 | #ifdef CONFIG_IEEE80211W |
93b76319 JM |
1240 | static void hostapd_sa_query_action(struct hostapd_data *hapd, |
1241 | struct ieee80211_mgmt *mgmt, size_t len) | |
5d22a1d5 JM |
1242 | { |
1243 | struct sta_info *sta; | |
1244 | u8 *end; | |
1245 | int i; | |
1246 | ||
93b76319 JM |
1247 | end = mgmt->u.action.u.sa_query_resp.trans_id + |
1248 | WLAN_SA_QUERY_TR_ID_LEN; | |
5d22a1d5 | 1249 | if (((u8 *) mgmt) + len < end) { |
93b76319 | 1250 | wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short SA Query Action " |
5d22a1d5 JM |
1251 | "frame (len=%lu)", (unsigned long) len); |
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 | ||
93b76319 | 1261 | /* MLME-SAQuery.confirm */ |
5d22a1d5 JM |
1262 | |
1263 | sta = ap_get_sta(hapd, mgmt->sa); | |
93b76319 | 1264 | if (sta == NULL || sta->sa_query_trans_id == NULL) { |
5d22a1d5 | 1265 | wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching STA with " |
93b76319 | 1266 | "pending SA Query request found"); |
5d22a1d5 JM |
1267 | return; |
1268 | } | |
1269 | ||
93b76319 JM |
1270 | for (i = 0; i < sta->sa_query_count; i++) { |
1271 | if (os_memcmp(sta->sa_query_trans_id + | |
1272 | i * WLAN_SA_QUERY_TR_ID_LEN, | |
1273 | mgmt->u.action.u.sa_query_resp.trans_id, | |
1274 | WLAN_SA_QUERY_TR_ID_LEN) == 0) | |
5d22a1d5 JM |
1275 | break; |
1276 | } | |
1277 | ||
93b76319 JM |
1278 | if (i >= sta->sa_query_count) { |
1279 | wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching SA Query " | |
5d22a1d5 JM |
1280 | "transaction identifier found"); |
1281 | return; | |
1282 | } | |
1283 | ||
1284 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
93b76319 JM |
1285 | HOSTAPD_LEVEL_DEBUG, |
1286 | "Reply to pending SA Query received"); | |
1287 | ap_sta_stop_sa_query(hapd, sta); | |
5d22a1d5 JM |
1288 | } |
1289 | #endif /* CONFIG_IEEE80211W */ | |
1290 | ||
1291 | ||
6fc6879b JM |
1292 | static void handle_action(struct hostapd_data *hapd, |
1293 | struct ieee80211_mgmt *mgmt, size_t len) | |
1294 | { | |
1295 | if (len < IEEE80211_HDRLEN + 1) { | |
1296 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
1297 | HOSTAPD_LEVEL_DEBUG, | |
1298 | "handle_action - too short payload (len=%lu)", | |
1299 | (unsigned long) len); | |
1300 | return; | |
1301 | } | |
1302 | ||
1303 | switch (mgmt->u.action.category) { | |
1304 | #ifdef CONFIG_IEEE80211R | |
1305 | case WLAN_ACTION_FT: | |
1306 | { | |
1307 | struct sta_info *sta; | |
1308 | ||
1309 | sta = ap_get_sta(hapd, mgmt->sa); | |
1310 | if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) { | |
1311 | wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored FT Action " | |
1312 | "frame from unassociated STA " MACSTR, | |
1313 | MAC2STR(mgmt->sa)); | |
1314 | return; | |
1315 | } | |
1316 | ||
1317 | if (wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action, | |
1318 | len - IEEE80211_HDRLEN)) | |
1319 | break; | |
1320 | ||
1321 | return; | |
1322 | } | |
1323 | #endif /* CONFIG_IEEE80211R */ | |
c2a71408 | 1324 | case WLAN_ACTION_WMM: |
6fc6879b JM |
1325 | hostapd_wme_action(hapd, mgmt, len); |
1326 | return; | |
5d22a1d5 | 1327 | #ifdef CONFIG_IEEE80211W |
93b76319 JM |
1328 | case WLAN_ACTION_SA_QUERY: |
1329 | hostapd_sa_query_action(hapd, mgmt, len); | |
5d22a1d5 JM |
1330 | return; |
1331 | #endif /* CONFIG_IEEE80211W */ | |
6fc6879b JM |
1332 | } |
1333 | ||
1334 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
1335 | HOSTAPD_LEVEL_DEBUG, | |
1336 | "handle_action - unknown action category %d or invalid " | |
1337 | "frame", | |
1338 | mgmt->u.action.category); | |
1339 | if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) && | |
1340 | !(mgmt->sa[0] & 0x01)) { | |
1341 | /* | |
1342 | * IEEE 802.11-REVma/D9.0 - 7.3.1.11 | |
1343 | * Return the Action frame to the source without change | |
1344 | * except that MSB of the Category set to 1. | |
1345 | */ | |
1346 | wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action " | |
1347 | "frame back to sender"); | |
1348 | os_memcpy(mgmt->da, mgmt->sa, ETH_ALEN); | |
1349 | os_memcpy(mgmt->sa, hapd->own_addr, ETH_ALEN); | |
1350 | os_memcpy(mgmt->bssid, hapd->own_addr, ETH_ALEN); | |
1351 | mgmt->u.action.category |= 0x80; | |
1352 | ||
1353 | hostapd_send_mgmt_frame(hapd, mgmt, len, 0); | |
1354 | } | |
1355 | } | |
1356 | ||
1357 | ||
1358 | /** | |
1359 | * ieee802_11_mgmt - process incoming IEEE 802.11 management frames | |
1360 | * @hapd: hostapd BSS data structure (the BSS to which the management frame was | |
1361 | * sent to) | |
1362 | * @buf: management frame data (starting from IEEE 802.11 header) | |
1363 | * @len: length of frame data in octets | |
1364 | * @stype: management frame subtype from frame control field | |
1365 | * | |
1366 | * Process all incoming IEEE 802.11 management frames. This will be called for | |
1367 | * each frame received from the kernel driver through wlan#ap interface. In | |
1368 | * addition, it can be called to re-inserted pending frames (e.g., when using | |
1369 | * external RADIUS server as an MAC ACL). | |
1370 | */ | |
1371 | void ieee802_11_mgmt(struct hostapd_data *hapd, u8 *buf, size_t len, u16 stype, | |
1372 | struct hostapd_frame_info *fi) | |
1373 | { | |
1374 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) buf; | |
1375 | int broadcast; | |
1376 | ||
1377 | if (stype == WLAN_FC_STYPE_BEACON) { | |
1378 | handle_beacon(hapd, mgmt, len, fi); | |
1379 | return; | |
1380 | } | |
1381 | ||
1382 | if (fi && fi->passive_scan) | |
1383 | return; | |
1384 | ||
1385 | broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff && | |
1386 | mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff && | |
1387 | mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff; | |
1388 | ||
1389 | if (!broadcast && | |
fe2c5241 | 1390 | os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) { |
6fc6879b JM |
1391 | printf("MGMT: BSSID=" MACSTR " not our address\n", |
1392 | MAC2STR(mgmt->bssid)); | |
1393 | return; | |
1394 | } | |
1395 | ||
1396 | ||
1397 | if (stype == WLAN_FC_STYPE_PROBE_REQ) { | |
1398 | handle_probe_req(hapd, mgmt, len); | |
1399 | return; | |
1400 | } | |
1401 | ||
1402 | if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) { | |
1403 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
1404 | HOSTAPD_LEVEL_DEBUG, | |
1405 | "MGMT: DA=" MACSTR " not our address", | |
1406 | MAC2STR(mgmt->da)); | |
1407 | return; | |
1408 | } | |
1409 | ||
1410 | switch (stype) { | |
1411 | case WLAN_FC_STYPE_AUTH: | |
1412 | wpa_printf(MSG_DEBUG, "mgmt::auth"); | |
1413 | handle_auth(hapd, mgmt, len); | |
1414 | break; | |
1415 | case WLAN_FC_STYPE_ASSOC_REQ: | |
1416 | wpa_printf(MSG_DEBUG, "mgmt::assoc_req"); | |
1417 | handle_assoc(hapd, mgmt, len, 0); | |
1418 | break; | |
6fc6879b JM |
1419 | case WLAN_FC_STYPE_REASSOC_REQ: |
1420 | wpa_printf(MSG_DEBUG, "mgmt::reassoc_req"); | |
1421 | handle_assoc(hapd, mgmt, len, 1); | |
1422 | break; | |
1423 | case WLAN_FC_STYPE_DISASSOC: | |
1424 | wpa_printf(MSG_DEBUG, "mgmt::disassoc"); | |
1425 | handle_disassoc(hapd, mgmt, len); | |
1426 | break; | |
1427 | case WLAN_FC_STYPE_DEAUTH: | |
1428 | wpa_printf(MSG_DEBUG, "mgmt::deauth"); | |
1429 | handle_deauth(hapd, mgmt, len); | |
1430 | break; | |
1431 | case WLAN_FC_STYPE_ACTION: | |
1432 | wpa_printf(MSG_DEBUG, "mgmt::action"); | |
1433 | handle_action(hapd, mgmt, len); | |
1434 | break; | |
1435 | default: | |
1436 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
1437 | HOSTAPD_LEVEL_DEBUG, | |
1438 | "unknown mgmt frame subtype %d", stype); | |
1439 | break; | |
1440 | } | |
1441 | } | |
1442 | ||
1443 | ||
1444 | static void handle_auth_cb(struct hostapd_data *hapd, | |
1445 | struct ieee80211_mgmt *mgmt, | |
1446 | size_t len, int ok) | |
1447 | { | |
1448 | u16 auth_alg, auth_transaction, status_code; | |
1449 | struct sta_info *sta; | |
1450 | ||
1451 | if (!ok) { | |
1452 | hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211, | |
1453 | HOSTAPD_LEVEL_NOTICE, | |
1454 | "did not acknowledge authentication response"); | |
1455 | return; | |
1456 | } | |
1457 | ||
1458 | if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) { | |
1459 | printf("handle_auth_cb - too short payload (len=%lu)\n", | |
1460 | (unsigned long) len); | |
1461 | return; | |
1462 | } | |
1463 | ||
1464 | auth_alg = le_to_host16(mgmt->u.auth.auth_alg); | |
1465 | auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction); | |
1466 | status_code = le_to_host16(mgmt->u.auth.status_code); | |
1467 | ||
1468 | sta = ap_get_sta(hapd, mgmt->da); | |
1469 | if (!sta) { | |
1470 | printf("handle_auth_cb: STA " MACSTR " not found\n", | |
1471 | MAC2STR(mgmt->da)); | |
1472 | return; | |
1473 | } | |
1474 | ||
1475 | if (status_code == WLAN_STATUS_SUCCESS && | |
1476 | ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) || | |
1477 | (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) { | |
1478 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
1479 | HOSTAPD_LEVEL_INFO, "authenticated"); | |
1480 | sta->flags |= WLAN_STA_AUTH; | |
1481 | } | |
1482 | } | |
1483 | ||
1484 | ||
1485 | static void handle_assoc_cb(struct hostapd_data *hapd, | |
1486 | struct ieee80211_mgmt *mgmt, | |
1487 | size_t len, int reassoc, int ok) | |
1488 | { | |
1489 | u16 status; | |
1490 | struct sta_info *sta; | |
1491 | int new_assoc = 1; | |
de9289c8 | 1492 | struct ht_cap_ie *ht_cap = NULL; |
6fc6879b JM |
1493 | |
1494 | if (!ok) { | |
1495 | hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211, | |
1496 | HOSTAPD_LEVEL_DEBUG, | |
1497 | "did not acknowledge association response"); | |
1498 | return; | |
1499 | } | |
1500 | ||
1501 | if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) : | |
1502 | sizeof(mgmt->u.assoc_resp))) { | |
1503 | printf("handle_assoc_cb(reassoc=%d) - too short payload " | |
1504 | "(len=%lu)\n", reassoc, (unsigned long) len); | |
1505 | return; | |
1506 | } | |
1507 | ||
1508 | if (reassoc) | |
1509 | status = le_to_host16(mgmt->u.reassoc_resp.status_code); | |
1510 | else | |
1511 | status = le_to_host16(mgmt->u.assoc_resp.status_code); | |
1512 | ||
1513 | sta = ap_get_sta(hapd, mgmt->da); | |
1514 | if (!sta) { | |
1515 | printf("handle_assoc_cb: STA " MACSTR " not found\n", | |
1516 | MAC2STR(mgmt->da)); | |
1517 | return; | |
1518 | } | |
1519 | ||
1520 | if (status != WLAN_STATUS_SUCCESS) | |
1521 | goto fail; | |
1522 | ||
1523 | /* Stop previous accounting session, if one is started, and allocate | |
1524 | * new session id for the new session. */ | |
1525 | accounting_sta_stop(hapd, sta); | |
6fc6879b JM |
1526 | |
1527 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
1528 | HOSTAPD_LEVEL_INFO, | |
2fc98d02 JM |
1529 | "associated (aid %d)", |
1530 | sta->aid); | |
6fc6879b JM |
1531 | |
1532 | if (sta->flags & WLAN_STA_ASSOC) | |
1533 | new_assoc = 0; | |
1534 | sta->flags |= WLAN_STA_ASSOC; | |
1535 | ||
1536 | if (reassoc) | |
1537 | mlme_reassociate_indication(hapd, sta); | |
1538 | else | |
1539 | mlme_associate_indication(hapd, sta); | |
1540 | ||
de9289c8 JM |
1541 | #ifdef CONFIG_IEEE80211N |
1542 | if (sta->flags & WLAN_STA_HT) | |
1543 | ht_cap = &sta->ht_capabilities; | |
1544 | #endif /* CONFIG_IEEE80211N */ | |
1545 | ||
5d22a1d5 | 1546 | #ifdef CONFIG_IEEE80211W |
93b76319 | 1547 | sta->sa_query_timed_out = 0; |
5d22a1d5 JM |
1548 | #endif /* CONFIG_IEEE80211W */ |
1549 | ||
6fc6879b JM |
1550 | if (hostapd_sta_add(hapd->conf->iface, hapd, sta->addr, sta->aid, |
1551 | sta->capability, sta->supported_rates, | |
de9289c8 JM |
1552 | sta->supported_rates_len, 0, sta->listen_interval, |
1553 | ht_cap)) | |
dc366e8e | 1554 | { |
6fc6879b JM |
1555 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, |
1556 | HOSTAPD_LEVEL_NOTICE, | |
1557 | "Could not add STA to kernel driver"); | |
1558 | } | |
1559 | ||
1560 | if (sta->eapol_sm == NULL) { | |
1561 | /* | |
1562 | * This STA does not use RADIUS server for EAP authentication, | |
1563 | * so bind it to the selected VLAN interface now, since the | |
1564 | * interface selection is not going to change anymore. | |
1565 | */ | |
1566 | ap_sta_bind_vlan(hapd, sta, 0); | |
1567 | } else if (sta->vlan_id) { | |
1568 | /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */ | |
1569 | ap_sta_bind_vlan(hapd, sta, 0); | |
1570 | } | |
1571 | if (sta->flags & WLAN_STA_SHORT_PREAMBLE) { | |
1572 | hostapd_sta_set_flags(hapd, sta->addr, sta->flags, | |
1573 | WLAN_STA_SHORT_PREAMBLE, ~0); | |
1574 | } else { | |
1575 | hostapd_sta_set_flags(hapd, sta->addr, sta->flags, | |
1576 | 0, ~WLAN_STA_SHORT_PREAMBLE); | |
1577 | } | |
1578 | ||
1579 | if (sta->auth_alg == WLAN_AUTH_FT) | |
1580 | wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT); | |
1581 | else | |
1582 | wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC); | |
1583 | hostapd_new_assoc_sta(hapd, sta, !new_assoc); | |
1584 | ||
1585 | ieee802_1x_notify_port_enabled(sta->eapol_sm, 1); | |
1586 | ||
1587 | fail: | |
1588 | /* Copy of the association request is not needed anymore */ | |
1589 | if (sta->last_assoc_req) { | |
1590 | os_free(sta->last_assoc_req); | |
1591 | sta->last_assoc_req = NULL; | |
1592 | } | |
1593 | } | |
1594 | ||
1595 | ||
1596 | void ieee802_11_mgmt_cb(struct hostapd_data *hapd, u8 *buf, size_t len, | |
1597 | u16 stype, int ok) | |
1598 | { | |
1599 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) buf; | |
1600 | ||
1601 | switch (stype) { | |
1602 | case WLAN_FC_STYPE_AUTH: | |
1603 | wpa_printf(MSG_DEBUG, "mgmt::auth cb"); | |
1604 | handle_auth_cb(hapd, mgmt, len, ok); | |
1605 | break; | |
1606 | case WLAN_FC_STYPE_ASSOC_RESP: | |
1607 | wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb"); | |
1608 | handle_assoc_cb(hapd, mgmt, len, 0, ok); | |
1609 | break; | |
1610 | case WLAN_FC_STYPE_REASSOC_RESP: | |
1611 | wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb"); | |
1612 | handle_assoc_cb(hapd, mgmt, len, 1, ok); | |
1613 | break; | |
1614 | case WLAN_FC_STYPE_PROBE_RESP: | |
1615 | wpa_printf(MSG_DEBUG, "mgmt::proberesp cb"); | |
1616 | break; | |
1617 | case WLAN_FC_STYPE_DEAUTH: | |
1618 | /* ignore */ | |
1619 | break; | |
5d22a1d5 JM |
1620 | case WLAN_FC_STYPE_ACTION: |
1621 | wpa_printf(MSG_DEBUG, "mgmt::action cb"); | |
1622 | break; | |
6fc6879b JM |
1623 | default: |
1624 | printf("unknown mgmt cb frame subtype %d\n", stype); | |
1625 | break; | |
1626 | } | |
1627 | } | |
1628 | ||
1629 | ||
1630 | static void ieee80211_tkip_countermeasures_stop(void *eloop_ctx, | |
1631 | void *timeout_ctx) | |
1632 | { | |
1633 | struct hostapd_data *hapd = eloop_ctx; | |
1634 | hapd->tkip_countermeasures = 0; | |
1635 | hostapd_set_countermeasures(hapd, 0); | |
1636 | hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211, | |
1637 | HOSTAPD_LEVEL_INFO, "TKIP countermeasures ended"); | |
1638 | } | |
1639 | ||
1640 | ||
1641 | static void ieee80211_tkip_countermeasures_start(struct hostapd_data *hapd) | |
1642 | { | |
1643 | struct sta_info *sta; | |
1644 | ||
1645 | hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211, | |
1646 | HOSTAPD_LEVEL_INFO, "TKIP countermeasures initiated"); | |
1647 | ||
1648 | wpa_auth_countermeasures_start(hapd->wpa_auth); | |
1649 | hapd->tkip_countermeasures = 1; | |
1650 | hostapd_set_countermeasures(hapd, 1); | |
1651 | wpa_gtk_rekey(hapd->wpa_auth); | |
1652 | eloop_cancel_timeout(ieee80211_tkip_countermeasures_stop, hapd, NULL); | |
1653 | eloop_register_timeout(60, 0, ieee80211_tkip_countermeasures_stop, | |
1654 | hapd, NULL); | |
1655 | for (sta = hapd->sta_list; sta != NULL; sta = sta->next) { | |
1656 | hostapd_sta_deauth(hapd, sta->addr, | |
1657 | WLAN_REASON_MICHAEL_MIC_FAILURE); | |
1658 | sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC | | |
1659 | WLAN_STA_AUTHORIZED); | |
1660 | hostapd_sta_remove(hapd, sta->addr); | |
1661 | } | |
1662 | } | |
1663 | ||
1664 | ||
1665 | void ieee80211_michael_mic_failure(struct hostapd_data *hapd, const u8 *addr, | |
1666 | int local) | |
1667 | { | |
1668 | time_t now; | |
1669 | ||
1670 | if (addr && local) { | |
1671 | struct sta_info *sta = ap_get_sta(hapd, addr); | |
1672 | if (sta != NULL) { | |
1673 | wpa_auth_sta_local_mic_failure_report(sta->wpa_sm); | |
1674 | hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211, | |
1675 | HOSTAPD_LEVEL_INFO, | |
1676 | "Michael MIC failure detected in " | |
1677 | "received frame"); | |
1678 | mlme_michaelmicfailure_indication(hapd, addr); | |
1679 | } else { | |
1680 | wpa_printf(MSG_DEBUG, | |
1681 | "MLME-MICHAELMICFAILURE.indication " | |
1682 | "for not associated STA (" MACSTR | |
1683 | ") ignored", MAC2STR(addr)); | |
1684 | return; | |
1685 | } | |
1686 | } | |
1687 | ||
1688 | time(&now); | |
1689 | if (now > hapd->michael_mic_failure + 60) { | |
1690 | hapd->michael_mic_failures = 1; | |
1691 | } else { | |
1692 | hapd->michael_mic_failures++; | |
1693 | if (hapd->michael_mic_failures > 1) | |
1694 | ieee80211_tkip_countermeasures_start(hapd); | |
1695 | } | |
1696 | hapd->michael_mic_failure = now; | |
1697 | } | |
1698 | ||
1699 | ||
1700 | int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen) | |
1701 | { | |
1702 | /* TODO */ | |
1703 | return 0; | |
1704 | } | |
1705 | ||
1706 | ||
1707 | int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta, | |
1708 | char *buf, size_t buflen) | |
1709 | { | |
1710 | /* TODO */ | |
1711 | return 0; | |
1712 | } | |
1713 | ||
1714 | #endif /* CONFIG_NATIVE_WINDOWS */ |