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Commit | Line | Data |
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6fc6879b JM |
1 | /* |
2 | * hostapd / IEEE 802.11 Management | |
f2991170 | 3 | * Copyright (c) 2002-2014, Jouni Malinen <j@w1.fi> |
6fc6879b | 4 | * |
0f3d578e JM |
5 | * This software may be distributed under the terms of the BSD license. |
6 | * See README for more details. | |
6fc6879b JM |
7 | */ |
8 | ||
1057d78e | 9 | #include "utils/includes.h" |
6fc6879b JM |
10 | |
11 | #ifndef CONFIG_NATIVE_WINDOWS | |
12 | ||
1057d78e JM |
13 | #include "utils/common.h" |
14 | #include "utils/eloop.h" | |
03da66bd | 15 | #include "crypto/crypto.h" |
d136c376 JM |
16 | #include "crypto/sha256.h" |
17 | #include "crypto/random.h" | |
81f4f619 JM |
18 | #include "common/ieee802_11_defs.h" |
19 | #include "common/ieee802_11_common.h" | |
03da66bd | 20 | #include "common/wpa_ctrl.h" |
98efcc41 | 21 | #include "common/sae.h" |
03da66bd JM |
22 | #include "radius/radius.h" |
23 | #include "radius/radius_client.h" | |
e44f8bf2 | 24 | #include "p2p/p2p.h" |
ed7a09f9 | 25 | #include "wps/wps.h" |
6fc6879b | 26 | #include "hostapd.h" |
6fc6879b | 27 | #include "beacon.h" |
6fc6879b JM |
28 | #include "ieee802_11_auth.h" |
29 | #include "sta_info.h" | |
6fc6879b | 30 | #include "ieee802_1x.h" |
6226e38d | 31 | #include "wpa_auth.h" |
f2991170 | 32 | #include "pmksa_cache_auth.h" |
1057d78e | 33 | #include "wmm.h" |
6fc6879b JM |
34 | #include "ap_list.h" |
35 | #include "accounting.h" | |
6226e38d JM |
36 | #include "ap_config.h" |
37 | #include "ap_mlme.h" | |
dce044cc | 38 | #include "p2p_hostapd.h" |
cee7d66b | 39 | #include "ap_drv_ops.h" |
c79938a5 | 40 | #include "wnm_ap.h" |
6226e38d | 41 | #include "ieee802_11.h" |
3d7ad2f6 | 42 | #include "dfs.h" |
6fc6879b JM |
43 | |
44 | ||
45 | u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid) | |
46 | { | |
47 | u8 *pos = eid; | |
48 | int i, num, count; | |
49 | ||
50 | if (hapd->iface->current_rates == NULL) | |
51 | return eid; | |
52 | ||
53 | *pos++ = WLAN_EID_SUPP_RATES; | |
54 | num = hapd->iface->num_rates; | |
29448243 JM |
55 | if (hapd->iconf->ieee80211n && hapd->iconf->require_ht) |
56 | num++; | |
202d97d4 JB |
57 | if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht) |
58 | num++; | |
6fc6879b JM |
59 | if (num > 8) { |
60 | /* rest of the rates are encoded in Extended supported | |
61 | * rates element */ | |
62 | num = 8; | |
63 | } | |
64 | ||
65 | *pos++ = num; | |
6fc6879b JM |
66 | for (i = 0, count = 0; i < hapd->iface->num_rates && count < num; |
67 | i++) { | |
68 | count++; | |
69 | *pos = hapd->iface->current_rates[i].rate / 5; | |
70 | if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC) | |
71 | *pos |= 0x80; | |
72 | pos++; | |
73 | } | |
74 | ||
202d97d4 JB |
75 | if (hapd->iconf->ieee80211n && hapd->iconf->require_ht && count < 8) { |
76 | count++; | |
29448243 | 77 | *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY; |
202d97d4 JB |
78 | } |
79 | ||
80 | if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht && count < 8) { | |
81 | count++; | |
82 | *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY; | |
83 | } | |
29448243 | 84 | |
6fc6879b JM |
85 | return pos; |
86 | } | |
87 | ||
88 | ||
89 | u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid) | |
90 | { | |
91 | u8 *pos = eid; | |
92 | int i, num, count; | |
93 | ||
94 | if (hapd->iface->current_rates == NULL) | |
95 | return eid; | |
96 | ||
97 | num = hapd->iface->num_rates; | |
29448243 JM |
98 | if (hapd->iconf->ieee80211n && hapd->iconf->require_ht) |
99 | num++; | |
202d97d4 JB |
100 | if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht) |
101 | num++; | |
6fc6879b JM |
102 | if (num <= 8) |
103 | return eid; | |
104 | num -= 8; | |
105 | ||
106 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
107 | *pos++ = num; | |
6fc6879b JM |
108 | for (i = 0, count = 0; i < hapd->iface->num_rates && count < num + 8; |
109 | i++) { | |
110 | count++; | |
111 | if (count <= 8) | |
112 | continue; /* already in SuppRates IE */ | |
113 | *pos = hapd->iface->current_rates[i].rate / 5; | |
114 | if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC) | |
115 | *pos |= 0x80; | |
116 | pos++; | |
117 | } | |
118 | ||
202d97d4 JB |
119 | if (hapd->iconf->ieee80211n && hapd->iconf->require_ht) { |
120 | count++; | |
121 | if (count > 8) | |
122 | *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY; | |
123 | } | |
124 | ||
125 | if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht) { | |
126 | count++; | |
127 | if (count > 8) | |
128 | *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY; | |
129 | } | |
29448243 | 130 | |
6fc6879b JM |
131 | return pos; |
132 | } | |
133 | ||
134 | ||
135 | u16 hostapd_own_capab_info(struct hostapd_data *hapd, struct sta_info *sta, | |
136 | int probe) | |
137 | { | |
138 | int capab = WLAN_CAPABILITY_ESS; | |
139 | int privacy; | |
3d7ad2f6 C |
140 | int dfs; |
141 | ||
142 | /* Check if any of configured channels require DFS */ | |
143 | dfs = hostapd_is_dfs_required(hapd->iface); | |
144 | if (dfs < 0) { | |
145 | wpa_printf(MSG_WARNING, "Failed to check if DFS is required; ret=%d", | |
146 | dfs); | |
147 | dfs = 0; | |
148 | } | |
6fc6879b JM |
149 | |
150 | if (hapd->iface->num_sta_no_short_preamble == 0 && | |
151 | hapd->iconf->preamble == SHORT_PREAMBLE) | |
152 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
153 | ||
154 | privacy = hapd->conf->ssid.wep.keys_set; | |
155 | ||
156 | if (hapd->conf->ieee802_1x && | |
157 | (hapd->conf->default_wep_key_len || | |
158 | hapd->conf->individual_wep_key_len)) | |
159 | privacy = 1; | |
160 | ||
161 | if (hapd->conf->wpa) | |
162 | privacy = 1; | |
163 | ||
a14896e8 JM |
164 | #ifdef CONFIG_HS20 |
165 | if (hapd->conf->osen) | |
166 | privacy = 1; | |
167 | #endif /* CONFIG_HS20 */ | |
168 | ||
6fc6879b JM |
169 | if (sta) { |
170 | int policy, def_klen; | |
171 | if (probe && sta->ssid_probe) { | |
172 | policy = sta->ssid_probe->security_policy; | |
173 | def_klen = sta->ssid_probe->wep.default_len; | |
174 | } else { | |
175 | policy = sta->ssid->security_policy; | |
176 | def_klen = sta->ssid->wep.default_len; | |
177 | } | |
178 | privacy = policy != SECURITY_PLAINTEXT; | |
179 | if (policy == SECURITY_IEEE_802_1X && def_klen == 0) | |
180 | privacy = 0; | |
181 | } | |
182 | ||
183 | if (privacy) | |
184 | capab |= WLAN_CAPABILITY_PRIVACY; | |
185 | ||
186 | if (hapd->iface->current_mode && | |
187 | hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G && | |
188 | hapd->iface->num_sta_no_short_slot_time == 0) | |
189 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; | |
190 | ||
3d7ad2f6 C |
191 | /* |
192 | * Currently, Spectrum Management capability bit is set when directly | |
193 | * requested in configuration by spectrum_mgmt_required or when AP is | |
194 | * running on DFS channel. | |
195 | * TODO: Also consider driver support for TPC to set Spectrum Mgmt bit | |
196 | */ | |
197 | if (hapd->iface->current_mode && | |
198 | hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211A && | |
199 | (hapd->iconf->spectrum_mgmt_required || dfs)) | |
200 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; | |
201 | ||
0629eeb4 JM |
202 | if (hapd->conf->radio_measurements) |
203 | capab |= IEEE80211_CAP_RRM; | |
204 | ||
6fc6879b JM |
205 | return capab; |
206 | } | |
207 | ||
208 | ||
6fc6879b | 209 | static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta, |
b57e086c JM |
210 | u16 auth_transaction, const u8 *challenge, |
211 | int iswep) | |
6fc6879b JM |
212 | { |
213 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
214 | HOSTAPD_LEVEL_DEBUG, | |
215 | "authentication (shared key, transaction %d)", | |
216 | auth_transaction); | |
217 | ||
218 | if (auth_transaction == 1) { | |
219 | if (!sta->challenge) { | |
220 | /* Generate a pseudo-random challenge */ | |
221 | u8 key[8]; | |
0b04889f | 222 | struct os_time now; |
6fc6879b JM |
223 | int r; |
224 | sta->challenge = os_zalloc(WLAN_AUTH_CHALLENGE_LEN); | |
225 | if (sta->challenge == NULL) | |
226 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
227 | ||
0b04889f PE |
228 | os_get_time(&now); |
229 | r = os_random(); | |
230 | os_memcpy(key, &now.sec, 4); | |
6fc6879b | 231 | os_memcpy(key + 4, &r, 4); |
8ef16831 JM |
232 | rc4_skip(key, sizeof(key), 0, |
233 | sta->challenge, WLAN_AUTH_CHALLENGE_LEN); | |
6fc6879b JM |
234 | } |
235 | return 0; | |
236 | } | |
237 | ||
238 | if (auth_transaction != 3) | |
239 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
240 | ||
241 | /* Transaction 3 */ | |
242 | if (!iswep || !sta->challenge || !challenge || | |
34ef46ce JM |
243 | os_memcmp_const(sta->challenge, challenge, |
244 | WLAN_AUTH_CHALLENGE_LEN)) { | |
6fc6879b JM |
245 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, |
246 | HOSTAPD_LEVEL_INFO, | |
247 | "shared key authentication - invalid " | |
248 | "challenge-response"); | |
249 | return WLAN_STATUS_CHALLENGE_FAIL; | |
250 | } | |
251 | ||
252 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
253 | HOSTAPD_LEVEL_DEBUG, | |
254 | "authentication OK (shared key)"); | |
6fc6879b JM |
255 | sta->flags |= WLAN_STA_AUTH; |
256 | wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH); | |
6fc6879b JM |
257 | os_free(sta->challenge); |
258 | sta->challenge = NULL; | |
259 | ||
260 | return 0; | |
261 | } | |
262 | ||
263 | ||
264 | static void send_auth_reply(struct hostapd_data *hapd, | |
265 | const u8 *dst, const u8 *bssid, | |
266 | u16 auth_alg, u16 auth_transaction, u16 resp, | |
267 | const u8 *ies, size_t ies_len) | |
268 | { | |
269 | struct ieee80211_mgmt *reply; | |
270 | u8 *buf; | |
271 | size_t rlen; | |
272 | ||
273 | rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth) + ies_len; | |
274 | buf = os_zalloc(rlen); | |
275 | if (buf == NULL) | |
276 | return; | |
277 | ||
278 | reply = (struct ieee80211_mgmt *) buf; | |
279 | reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, | |
280 | WLAN_FC_STYPE_AUTH); | |
6fc6879b JM |
281 | os_memcpy(reply->da, dst, ETH_ALEN); |
282 | os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN); | |
283 | os_memcpy(reply->bssid, bssid, ETH_ALEN); | |
284 | ||
285 | reply->u.auth.auth_alg = host_to_le16(auth_alg); | |
286 | reply->u.auth.auth_transaction = host_to_le16(auth_transaction); | |
287 | reply->u.auth.status_code = host_to_le16(resp); | |
288 | ||
289 | if (ies && ies_len) | |
290 | os_memcpy(reply->u.auth.variable, ies, ies_len); | |
291 | ||
292 | wpa_printf(MSG_DEBUG, "authentication reply: STA=" MACSTR | |
293 | " auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu)", | |
294 | MAC2STR(dst), auth_alg, auth_transaction, | |
295 | resp, (unsigned long) ies_len); | |
8cfa3527 | 296 | if (hostapd_drv_send_mlme(hapd, reply, rlen, 0) < 0) |
61323e70 | 297 | wpa_printf(MSG_INFO, "send_auth_reply: send"); |
6fc6879b JM |
298 | |
299 | os_free(buf); | |
300 | } | |
301 | ||
302 | ||
303 | #ifdef CONFIG_IEEE80211R | |
304 | static void handle_auth_ft_finish(void *ctx, const u8 *dst, const u8 *bssid, | |
305 | u16 auth_transaction, u16 status, | |
306 | const u8 *ies, size_t ies_len) | |
307 | { | |
308 | struct hostapd_data *hapd = ctx; | |
309 | struct sta_info *sta; | |
310 | ||
311 | send_auth_reply(hapd, dst, bssid, WLAN_AUTH_FT, auth_transaction, | |
312 | status, ies, ies_len); | |
313 | ||
314 | if (status != WLAN_STATUS_SUCCESS) | |
315 | return; | |
316 | ||
317 | sta = ap_get_sta(hapd, dst); | |
318 | if (sta == NULL) | |
319 | return; | |
320 | ||
321 | hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211, | |
322 | HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)"); | |
323 | sta->flags |= WLAN_STA_AUTH; | |
324 | mlme_authenticate_indication(hapd, sta); | |
325 | } | |
326 | #endif /* CONFIG_IEEE80211R */ | |
327 | ||
328 | ||
c10347f2 | 329 | #ifdef CONFIG_SAE |
21af6d15 | 330 | |
e96da42b | 331 | static struct wpabuf * auth_build_sae_commit(struct hostapd_data *hapd, |
872b7545 | 332 | struct sta_info *sta, int update) |
21af6d15 JM |
333 | { |
334 | struct wpabuf *buf; | |
335 | ||
146f6c9a JM |
336 | if (hapd->conf->ssid.wpa_passphrase == NULL) { |
337 | wpa_printf(MSG_DEBUG, "SAE: No password available"); | |
338 | return NULL; | |
339 | } | |
340 | ||
872b7545 MH |
341 | if (update && |
342 | sae_prepare_commit(hapd->own_addr, sta->addr, | |
8e31e955 JM |
343 | (u8 *) hapd->conf->ssid.wpa_passphrase, |
344 | os_strlen(hapd->conf->ssid.wpa_passphrase), | |
345 | sta->sae) < 0) { | |
346 | wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE"); | |
21af6d15 | 347 | return NULL; |
8e31e955 | 348 | } |
21af6d15 | 349 | |
8e31e955 JM |
350 | buf = wpabuf_alloc(SAE_COMMIT_MAX_LEN); |
351 | if (buf == NULL) | |
352 | return NULL; | |
872b7545 MH |
353 | sae_write_commit(sta->sae, buf, sta->sae->tmp ? |
354 | sta->sae->tmp->anti_clogging_token : NULL); | |
21af6d15 JM |
355 | |
356 | return buf; | |
357 | } | |
358 | ||
359 | ||
360 | static struct wpabuf * auth_build_sae_confirm(struct hostapd_data *hapd, | |
361 | struct sta_info *sta) | |
362 | { | |
363 | struct wpabuf *buf; | |
364 | ||
fb8fcc29 | 365 | buf = wpabuf_alloc(SAE_CONFIRM_MAX_LEN); |
21af6d15 JM |
366 | if (buf == NULL) |
367 | return NULL; | |
368 | ||
fb8fcc29 | 369 | sae_write_confirm(sta->sae, buf); |
21af6d15 JM |
370 | |
371 | return buf; | |
372 | } | |
373 | ||
374 | ||
e96da42b BC |
375 | static int auth_sae_send_commit(struct hostapd_data *hapd, |
376 | struct sta_info *sta, | |
872b7545 | 377 | const u8 *bssid, int update) |
e96da42b BC |
378 | { |
379 | struct wpabuf *data; | |
380 | ||
872b7545 | 381 | data = auth_build_sae_commit(hapd, sta, update); |
e96da42b BC |
382 | if (data == NULL) |
383 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
384 | ||
385 | send_auth_reply(hapd, sta->addr, bssid, | |
386 | WLAN_AUTH_SAE, 1, WLAN_STATUS_SUCCESS, | |
387 | wpabuf_head(data), wpabuf_len(data)); | |
388 | ||
389 | wpabuf_free(data); | |
390 | ||
391 | return WLAN_STATUS_SUCCESS; | |
392 | } | |
393 | ||
394 | ||
395 | static int auth_sae_send_confirm(struct hostapd_data *hapd, | |
396 | struct sta_info *sta, | |
397 | const u8 *bssid) | |
398 | { | |
399 | struct wpabuf *data; | |
400 | ||
401 | data = auth_build_sae_confirm(hapd, sta); | |
402 | if (data == NULL) | |
403 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
404 | ||
405 | send_auth_reply(hapd, sta->addr, bssid, | |
406 | WLAN_AUTH_SAE, 2, WLAN_STATUS_SUCCESS, | |
407 | wpabuf_head(data), wpabuf_len(data)); | |
408 | ||
409 | wpabuf_free(data); | |
410 | ||
411 | return WLAN_STATUS_SUCCESS; | |
412 | } | |
413 | ||
414 | ||
d136c376 JM |
415 | static int use_sae_anti_clogging(struct hostapd_data *hapd) |
416 | { | |
417 | struct sta_info *sta; | |
418 | unsigned int open = 0; | |
419 | ||
420 | if (hapd->conf->sae_anti_clogging_threshold == 0) | |
421 | return 1; | |
422 | ||
423 | for (sta = hapd->sta_list; sta; sta = sta->next) { | |
424 | if (!sta->sae) | |
425 | continue; | |
426 | if (sta->sae->state != SAE_COMMITTED && | |
427 | sta->sae->state != SAE_CONFIRMED) | |
428 | continue; | |
429 | open++; | |
430 | if (open >= hapd->conf->sae_anti_clogging_threshold) | |
431 | return 1; | |
432 | } | |
433 | ||
434 | return 0; | |
435 | } | |
436 | ||
437 | ||
438 | static int check_sae_token(struct hostapd_data *hapd, const u8 *addr, | |
439 | const u8 *token, size_t token_len) | |
440 | { | |
441 | u8 mac[SHA256_MAC_LEN]; | |
442 | ||
443 | if (token_len != SHA256_MAC_LEN) | |
444 | return -1; | |
445 | if (hmac_sha256(hapd->sae_token_key, sizeof(hapd->sae_token_key), | |
446 | addr, ETH_ALEN, mac) < 0 || | |
0233dcac | 447 | os_memcmp_const(token, mac, SHA256_MAC_LEN) != 0) |
d136c376 JM |
448 | return -1; |
449 | ||
450 | return 0; | |
451 | } | |
452 | ||
453 | ||
454 | static struct wpabuf * auth_build_token_req(struct hostapd_data *hapd, | |
a959a3b6 | 455 | int group, const u8 *addr) |
d136c376 JM |
456 | { |
457 | struct wpabuf *buf; | |
458 | u8 *token; | |
fe52c210 | 459 | struct os_reltime now; |
d136c376 | 460 | |
fe52c210 JB |
461 | os_get_reltime(&now); |
462 | if (!os_reltime_initialized(&hapd->last_sae_token_key_update) || | |
463 | os_reltime_expired(&now, &hapd->last_sae_token_key_update, 60)) { | |
a50414c3 JM |
464 | if (random_get_bytes(hapd->sae_token_key, |
465 | sizeof(hapd->sae_token_key)) < 0) | |
466 | return NULL; | |
d136c376 JM |
467 | wpa_hexdump(MSG_DEBUG, "SAE: Updated token key", |
468 | hapd->sae_token_key, sizeof(hapd->sae_token_key)); | |
fe52c210 | 469 | hapd->last_sae_token_key_update = now; |
d136c376 JM |
470 | } |
471 | ||
a959a3b6 | 472 | buf = wpabuf_alloc(sizeof(le16) + SHA256_MAC_LEN); |
d136c376 JM |
473 | if (buf == NULL) |
474 | return NULL; | |
475 | ||
a959a3b6 MH |
476 | wpabuf_put_le16(buf, group); /* Finite Cyclic Group */ |
477 | ||
d136c376 JM |
478 | token = wpabuf_put(buf, SHA256_MAC_LEN); |
479 | hmac_sha256(hapd->sae_token_key, sizeof(hapd->sae_token_key), | |
480 | addr, ETH_ALEN, token); | |
481 | ||
482 | return buf; | |
483 | } | |
484 | ||
485 | ||
e96da42b BC |
486 | static int sae_sm_step(struct hostapd_data *hapd, struct sta_info *sta, |
487 | const u8 *bssid, u8 auth_transaction) | |
488 | { | |
489 | int ret; | |
490 | ||
491 | if (auth_transaction != 1 && auth_transaction != 2) | |
492 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
493 | ||
494 | switch (sta->sae->state) { | |
495 | case SAE_NOTHING: | |
496 | if (auth_transaction == 1) { | |
872b7545 | 497 | ret = auth_sae_send_commit(hapd, sta, bssid, 1); |
e96da42b BC |
498 | if (ret) |
499 | return ret; | |
500 | sta->sae->state = SAE_COMMITTED; | |
501 | ||
502 | if (sae_process_commit(sta->sae) < 0) | |
503 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
504 | ||
505 | /* | |
506 | * In mesh case, both Commit and Confirm can be sent | |
507 | * immediately. In infrastructure BSS, only a single | |
508 | * Authentication frame (Commit) is expected from the AP | |
509 | * here and the second one (Confirm) will be sent once | |
510 | * the STA has sent its second Authentication frame | |
511 | * (Confirm). | |
512 | */ | |
513 | if (hapd->conf->mesh & MESH_ENABLED) { | |
514 | /* | |
515 | * Send both Commit and Confirm immediately | |
516 | * based on SAE finite state machine | |
517 | * Nothing -> Confirm transition. | |
518 | */ | |
519 | ret = auth_sae_send_confirm(hapd, sta, bssid); | |
520 | if (ret) | |
521 | return ret; | |
522 | sta->sae->state = SAE_CONFIRMED; | |
523 | } else { | |
524 | /* | |
525 | * For infrastructure BSS, send only the Commit | |
526 | * message now to get alternating sequence of | |
527 | * Authentication frames between the AP and STA. | |
528 | * Confirm will be sent in | |
529 | * Commited -> Confirmed/Accepted transition | |
530 | * when receiving Confirm from STA. | |
531 | */ | |
532 | } | |
533 | } else { | |
534 | hostapd_logger(hapd, sta->addr, | |
535 | HOSTAPD_MODULE_IEEE80211, | |
536 | HOSTAPD_LEVEL_DEBUG, | |
537 | "SAE confirm before commit"); | |
538 | } | |
539 | break; | |
540 | case SAE_COMMITTED: | |
541 | if (auth_transaction == 1) { | |
542 | if (sae_process_commit(sta->sae) < 0) | |
543 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
544 | ||
545 | ret = auth_sae_send_confirm(hapd, sta, bssid); | |
546 | if (ret) | |
547 | return ret; | |
548 | sta->sae->state = SAE_CONFIRMED; | |
549 | } else if (hapd->conf->mesh & MESH_ENABLED) { | |
550 | /* | |
551 | * In mesh case, follow SAE finite state machine and | |
552 | * send Commit now. | |
553 | */ | |
872b7545 | 554 | ret = auth_sae_send_commit(hapd, sta, bssid, 1); |
e96da42b BC |
555 | if (ret) |
556 | return ret; | |
557 | } else { | |
558 | /* | |
559 | * For instructure BSS, send the postponed Confirm from | |
560 | * Nothing -> Confirmed transition that was reduced to | |
561 | * Nothing -> Committed above. | |
562 | */ | |
563 | ret = auth_sae_send_confirm(hapd, sta, bssid); | |
564 | if (ret) | |
565 | return ret; | |
566 | ||
567 | sta->sae->state = SAE_CONFIRMED; | |
568 | ||
569 | /* | |
570 | * Since this was triggered on Confirm RX, run another | |
571 | * step to get to Accepted without waiting for | |
572 | * additional events. | |
573 | */ | |
574 | return sae_sm_step(hapd, sta, bssid, auth_transaction); | |
575 | } | |
576 | break; | |
577 | case SAE_CONFIRMED: | |
578 | if (auth_transaction == 1) { | |
872b7545 | 579 | ret = auth_sae_send_commit(hapd, sta, bssid, 1); |
e96da42b BC |
580 | if (ret) |
581 | return ret; | |
582 | ||
583 | if (sae_process_commit(sta->sae) < 0) | |
584 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
585 | ||
586 | ret = auth_sae_send_confirm(hapd, sta, bssid); | |
587 | if (ret) | |
588 | return ret; | |
589 | } else { | |
590 | sta->flags |= WLAN_STA_AUTH; | |
591 | sta->auth_alg = WLAN_AUTH_SAE; | |
592 | mlme_authenticate_indication(hapd, sta); | |
593 | wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH); | |
594 | sta->sae->state = SAE_ACCEPTED; | |
595 | wpa_auth_pmksa_add_sae(hapd->wpa_auth, sta->addr, | |
596 | sta->sae->pmk); | |
597 | } | |
598 | break; | |
599 | case SAE_ACCEPTED: | |
600 | if (auth_transaction == 1) { | |
601 | wpa_printf(MSG_DEBUG, "SAE: remove the STA (" MACSTR | |
602 | ") doing reauthentication", | |
603 | MAC2STR(sta->addr)); | |
604 | ap_free_sta(hapd, sta); | |
605 | } else { | |
606 | ret = auth_sae_send_confirm(hapd, sta, bssid); | |
607 | sae_clear_temp_data(sta->sae); | |
608 | if (ret) | |
609 | return ret; | |
610 | } | |
611 | break; | |
612 | default: | |
613 | wpa_printf(MSG_ERROR, "SAE: invalid state %d", | |
614 | sta->sae->state); | |
615 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
616 | } | |
617 | return WLAN_STATUS_SUCCESS; | |
618 | } | |
619 | ||
620 | ||
c10347f2 JM |
621 | static void handle_auth_sae(struct hostapd_data *hapd, struct sta_info *sta, |
622 | const struct ieee80211_mgmt *mgmt, size_t len, | |
afa2ffb4 | 623 | u16 auth_transaction, u16 status_code) |
c10347f2 JM |
624 | { |
625 | u16 resp = WLAN_STATUS_SUCCESS; | |
750efe6e | 626 | struct wpabuf *data = NULL; |
c10347f2 | 627 | |
98efcc41 | 628 | if (!sta->sae) { |
afa2ffb4 | 629 | if (auth_transaction != 1 || status_code != WLAN_STATUS_SUCCESS) |
d136c376 | 630 | return; |
98efcc41 JM |
631 | sta->sae = os_zalloc(sizeof(*sta->sae)); |
632 | if (sta->sae == NULL) | |
633 | return; | |
dd43026a | 634 | sta->sae->state = SAE_NOTHING; |
98efcc41 JM |
635 | } |
636 | ||
c10347f2 | 637 | if (auth_transaction == 1) { |
a959a3b6 | 638 | const u8 *token = NULL, *pos, *end; |
d136c376 | 639 | size_t token_len = 0; |
c10347f2 JM |
640 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, |
641 | HOSTAPD_LEVEL_DEBUG, | |
afa2ffb4 JM |
642 | "start SAE authentication (RX commit, status=%u)", |
643 | status_code); | |
872b7545 MH |
644 | |
645 | if ((hapd->conf->mesh & MESH_ENABLED) && | |
afa2ffb4 JM |
646 | status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ && |
647 | sta->sae->tmp) { | |
a959a3b6 MH |
648 | pos = mgmt->u.auth.variable; |
649 | end = ((const u8 *) mgmt) + len; | |
650 | if (pos + sizeof(le16) > end) { | |
651 | wpa_printf(MSG_ERROR, | |
652 | "SAE: Too short anti-clogging token request"); | |
653 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
654 | goto reply; | |
655 | } | |
656 | resp = sae_group_allowed(sta->sae, | |
657 | hapd->conf->sae_groups, | |
658 | WPA_GET_LE16(pos)); | |
659 | if (resp != WLAN_STATUS_SUCCESS) { | |
660 | wpa_printf(MSG_ERROR, | |
661 | "SAE: Invalid group in anti-clogging token request"); | |
662 | goto reply; | |
663 | } | |
664 | pos += sizeof(le16); | |
665 | ||
872b7545 MH |
666 | wpabuf_free(sta->sae->tmp->anti_clogging_token); |
667 | sta->sae->tmp->anti_clogging_token = | |
a959a3b6 | 668 | wpabuf_alloc_copy(pos, end - pos); |
872b7545 MH |
669 | if (sta->sae->tmp->anti_clogging_token == NULL) { |
670 | wpa_printf(MSG_ERROR, | |
671 | "SAE: Failed to alloc for anti-clogging token"); | |
672 | return; | |
673 | } | |
674 | ||
675 | /* | |
676 | * IEEE Std 802.11-2012, 11.3.8.6.4: If the Status code | |
677 | * is 76, a new Commit Message shall be constructed | |
678 | * with the Anti-Clogging Token from the received | |
679 | * Authentication frame, and the commit-scalar and | |
680 | * COMMIT-ELEMENT previously sent. | |
681 | */ | |
682 | if (auth_sae_send_commit(hapd, sta, mgmt->bssid, 0)) { | |
683 | wpa_printf(MSG_ERROR, | |
684 | "SAE: Failed to send commit message"); | |
685 | return; | |
686 | } | |
687 | sta->sae->state = SAE_COMMITTED; | |
688 | return; | |
689 | } | |
690 | ||
afa2ffb4 JM |
691 | if (status_code != WLAN_STATUS_SUCCESS) |
692 | return; | |
693 | ||
146f6c9a JM |
694 | resp = sae_parse_commit(sta->sae, mgmt->u.auth.variable, |
695 | ((const u8 *) mgmt) + len - | |
d136c376 | 696 | mgmt->u.auth.variable, &token, |
625f202a | 697 | &token_len, hapd->conf->sae_groups); |
d136c376 JM |
698 | if (token && check_sae_token(hapd, sta->addr, token, token_len) |
699 | < 0) { | |
700 | wpa_printf(MSG_DEBUG, "SAE: Drop commit message with " | |
701 | "incorrect token from " MACSTR, | |
702 | MAC2STR(sta->addr)); | |
703 | return; | |
704 | } | |
705 | ||
e96da42b BC |
706 | if (resp != WLAN_STATUS_SUCCESS) |
707 | goto reply; | |
708 | ||
709 | if (!token && use_sae_anti_clogging(hapd)) { | |
710 | wpa_printf(MSG_DEBUG, | |
711 | "SAE: Request anti-clogging token from " | |
712 | MACSTR, MAC2STR(sta->addr)); | |
a959a3b6 MH |
713 | data = auth_build_token_req(hapd, sta->sae->group, |
714 | sta->addr); | |
e96da42b | 715 | resp = WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ; |
872b7545 MH |
716 | if (hapd->conf->mesh & MESH_ENABLED) |
717 | sta->sae->state = SAE_NOTHING; | |
e96da42b | 718 | goto reply; |
750efe6e | 719 | } |
e96da42b BC |
720 | |
721 | resp = sae_sm_step(hapd, sta, mgmt->bssid, auth_transaction); | |
c10347f2 | 722 | } else if (auth_transaction == 2) { |
c10347f2 JM |
723 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, |
724 | HOSTAPD_LEVEL_DEBUG, | |
afa2ffb4 JM |
725 | "SAE authentication (RX confirm, status=%u)", |
726 | status_code); | |
727 | if (status_code != WLAN_STATUS_SUCCESS) | |
728 | return; | |
e96da42b BC |
729 | if (sta->sae->state >= SAE_CONFIRMED || |
730 | !(hapd->conf->mesh & MESH_ENABLED)) { | |
731 | if (sae_check_confirm(sta->sae, mgmt->u.auth.variable, | |
732 | ((u8 *) mgmt) + len - | |
733 | mgmt->u.auth.variable) < 0) { | |
750efe6e | 734 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; |
e96da42b | 735 | goto reply; |
b4fd3613 | 736 | } |
21af6d15 | 737 | } |
e96da42b | 738 | resp = sae_sm_step(hapd, sta, mgmt->bssid, auth_transaction); |
c10347f2 JM |
739 | } else { |
740 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
741 | HOSTAPD_LEVEL_DEBUG, | |
afa2ffb4 JM |
742 | "unexpected SAE authentication transaction %u (status=%u)", |
743 | auth_transaction, status_code); | |
744 | if (status_code != WLAN_STATUS_SUCCESS) | |
745 | return; | |
c10347f2 JM |
746 | resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION; |
747 | } | |
748 | ||
e96da42b BC |
749 | reply: |
750 | if (resp != WLAN_STATUS_SUCCESS) { | |
751 | send_auth_reply(hapd, mgmt->sa, mgmt->bssid, WLAN_AUTH_SAE, | |
752 | auth_transaction, resp, | |
753 | data ? wpabuf_head(data) : (u8 *) "", | |
754 | data ? wpabuf_len(data) : 0); | |
755 | } | |
21af6d15 | 756 | wpabuf_free(data); |
c10347f2 JM |
757 | } |
758 | #endif /* CONFIG_SAE */ | |
759 | ||
760 | ||
b57e086c JM |
761 | static void handle_auth(struct hostapd_data *hapd, |
762 | const struct ieee80211_mgmt *mgmt, size_t len) | |
6fc6879b JM |
763 | { |
764 | u16 auth_alg, auth_transaction, status_code; | |
765 | u16 resp = WLAN_STATUS_SUCCESS; | |
766 | struct sta_info *sta = NULL; | |
767 | int res; | |
768 | u16 fc; | |
b57e086c | 769 | const u8 *challenge = NULL; |
6fc6879b JM |
770 | u32 session_timeout, acct_interim_interval; |
771 | int vlan_id = 0; | |
2ad3e6c8 | 772 | struct hostapd_sta_wpa_psk_short *psk = NULL; |
6fc6879b JM |
773 | u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN]; |
774 | size_t resp_ies_len = 0; | |
2092597f MB |
775 | char *identity = NULL; |
776 | char *radius_cui = NULL; | |
38cb0a2d | 777 | u16 seq_ctrl; |
6fc6879b JM |
778 | |
779 | if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) { | |
61323e70 JM |
780 | wpa_printf(MSG_INFO, "handle_auth - too short payload (len=%lu)", |
781 | (unsigned long) len); | |
6fc6879b JM |
782 | return; |
783 | } | |
784 | ||
c2aff6b1 | 785 | #ifdef CONFIG_TESTING_OPTIONS |
06df2aa6 | 786 | if (hapd->iconf->ignore_auth_probability > 0.0 && |
c2aff6b1 JB |
787 | drand48() < hapd->iconf->ignore_auth_probability) { |
788 | wpa_printf(MSG_INFO, | |
789 | "TESTING: ignoring auth frame from " MACSTR, | |
790 | MAC2STR(mgmt->sa)); | |
791 | return; | |
792 | } | |
793 | #endif /* CONFIG_TESTING_OPTIONS */ | |
794 | ||
6fc6879b JM |
795 | auth_alg = le_to_host16(mgmt->u.auth.auth_alg); |
796 | auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction); | |
797 | status_code = le_to_host16(mgmt->u.auth.status_code); | |
798 | fc = le_to_host16(mgmt->frame_control); | |
38cb0a2d | 799 | seq_ctrl = le_to_host16(mgmt->seq_ctrl); |
6fc6879b JM |
800 | |
801 | if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) + | |
802 | 2 + WLAN_AUTH_CHALLENGE_LEN && | |
803 | mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE && | |
804 | mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN) | |
805 | challenge = &mgmt->u.auth.variable[2]; | |
806 | ||
807 | wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d " | |
38cb0a2d IP |
808 | "auth_transaction=%d status_code=%d wep=%d%s " |
809 | "seq_ctrl=0x%x%s", | |
6fc6879b JM |
810 | MAC2STR(mgmt->sa), auth_alg, auth_transaction, |
811 | status_code, !!(fc & WLAN_FC_ISWEP), | |
38cb0a2d IP |
812 | challenge ? " challenge" : "", |
813 | seq_ctrl, (fc & WLAN_FC_RETRY) ? " retry" : ""); | |
6fc6879b | 814 | |
6fc6879b JM |
815 | if (hapd->tkip_countermeasures) { |
816 | resp = WLAN_REASON_MICHAEL_MIC_FAILURE; | |
817 | goto fail; | |
818 | } | |
819 | ||
820 | if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) && | |
821 | auth_alg == WLAN_AUTH_OPEN) || | |
822 | #ifdef CONFIG_IEEE80211R | |
0bf927a0 | 823 | (hapd->conf->wpa && wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt) && |
6fc6879b JM |
824 | auth_alg == WLAN_AUTH_FT) || |
825 | #endif /* CONFIG_IEEE80211R */ | |
c10347f2 JM |
826 | #ifdef CONFIG_SAE |
827 | (hapd->conf->wpa && wpa_key_mgmt_sae(hapd->conf->wpa_key_mgmt) && | |
828 | auth_alg == WLAN_AUTH_SAE) || | |
829 | #endif /* CONFIG_SAE */ | |
6fc6879b JM |
830 | ((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) && |
831 | auth_alg == WLAN_AUTH_SHARED_KEY))) { | |
61323e70 JM |
832 | wpa_printf(MSG_INFO, "Unsupported authentication algorithm (%d)", |
833 | auth_alg); | |
6fc6879b JM |
834 | resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG; |
835 | goto fail; | |
836 | } | |
837 | ||
c10347f2 | 838 | if (!(auth_transaction == 1 || auth_alg == WLAN_AUTH_SAE || |
6fc6879b | 839 | (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) { |
61323e70 JM |
840 | wpa_printf(MSG_INFO, "Unknown authentication transaction number (%d)", |
841 | auth_transaction); | |
6fc6879b JM |
842 | resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION; |
843 | goto fail; | |
844 | } | |
845 | ||
846 | if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) { | |
61323e70 JM |
847 | wpa_printf(MSG_INFO, "Station " MACSTR " not allowed to authenticate", |
848 | MAC2STR(mgmt->sa)); | |
6fc6879b JM |
849 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; |
850 | goto fail; | |
851 | } | |
852 | ||
853 | res = hostapd_allowed_address(hapd, mgmt->sa, (u8 *) mgmt, len, | |
854 | &session_timeout, | |
05ab9712 | 855 | &acct_interim_interval, &vlan_id, |
2ad3e6c8 | 856 | &psk, &identity, &radius_cui); |
05ab9712 | 857 | |
6fc6879b | 858 | if (res == HOSTAPD_ACL_REJECT) { |
61323e70 JM |
859 | wpa_printf(MSG_INFO, "Station " MACSTR " not allowed to authenticate", |
860 | MAC2STR(mgmt->sa)); | |
6fc6879b JM |
861 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; |
862 | goto fail; | |
863 | } | |
864 | if (res == HOSTAPD_ACL_PENDING) { | |
865 | wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR | |
866 | " waiting for an external authentication", | |
867 | MAC2STR(mgmt->sa)); | |
868 | /* Authentication code will re-send the authentication frame | |
869 | * after it has received (and cached) information from the | |
870 | * external source. */ | |
871 | return; | |
872 | } | |
873 | ||
38cb0a2d IP |
874 | sta = ap_get_sta(hapd, mgmt->sa); |
875 | if (sta) { | |
876 | if ((fc & WLAN_FC_RETRY) && | |
877 | sta->last_seq_ctrl != WLAN_INVALID_MGMT_SEQ && | |
878 | sta->last_seq_ctrl == seq_ctrl && | |
879 | sta->last_subtype == WLAN_FC_STYPE_AUTH) { | |
880 | hostapd_logger(hapd, sta->addr, | |
881 | HOSTAPD_MODULE_IEEE80211, | |
882 | HOSTAPD_LEVEL_DEBUG, | |
883 | "Drop repeated authentication frame seq_ctrl=0x%x", | |
884 | seq_ctrl); | |
885 | return; | |
886 | } | |
887 | } else { | |
c50d94f1 | 888 | #ifdef CONFIG_MESH |
38cb0a2d IP |
889 | if (hapd->conf->mesh & MESH_ENABLED) { |
890 | /* if the mesh peer is not available, we don't do auth. | |
891 | */ | |
c50d94f1 | 892 | return; |
38cb0a2d | 893 | } |
c50d94f1 | 894 | #endif /* CONFIG_MESH */ |
38cb0a2d | 895 | |
c50d94f1 BC |
896 | sta = ap_sta_add(hapd, mgmt->sa); |
897 | if (!sta) { | |
898 | resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA; | |
899 | goto fail; | |
900 | } | |
6fc6879b | 901 | } |
38cb0a2d IP |
902 | sta->last_seq_ctrl = seq_ctrl; |
903 | sta->last_subtype = WLAN_FC_STYPE_AUTH; | |
6fc6879b JM |
904 | |
905 | if (vlan_id > 0) { | |
80ebfd95 | 906 | if (!hostapd_vlan_id_valid(hapd->conf->vlan, vlan_id)) { |
6fc6879b JM |
907 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS, |
908 | HOSTAPD_LEVEL_INFO, "Invalid VLAN ID " | |
909 | "%d received from RADIUS server", | |
910 | vlan_id); | |
911 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
912 | goto fail; | |
913 | } | |
914 | sta->vlan_id = vlan_id; | |
915 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS, | |
916 | HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id); | |
917 | } | |
918 | ||
f2a14be7 | 919 | hostapd_free_psk_list(sta->psk); |
5ee56c4e MB |
920 | if (hapd->conf->wpa_psk_radius != PSK_RADIUS_IGNORED) { |
921 | sta->psk = psk; | |
922 | psk = NULL; | |
05ab9712 | 923 | } else { |
05ab9712 MB |
924 | sta->psk = NULL; |
925 | } | |
926 | ||
2092597f MB |
927 | sta->identity = identity; |
928 | identity = NULL; | |
929 | sta->radius_cui = radius_cui; | |
930 | radius_cui = NULL; | |
931 | ||
6fc6879b JM |
932 | sta->flags &= ~WLAN_STA_PREAUTH; |
933 | ieee802_1x_notify_pre_auth(sta->eapol_sm, 0); | |
934 | ||
5843e1c9 | 935 | if (hapd->conf->acct_interim_interval == 0 && acct_interim_interval) |
6fc6879b JM |
936 | sta->acct_interim_interval = acct_interim_interval; |
937 | if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT) | |
938 | ap_sta_session_timeout(hapd, sta, session_timeout); | |
939 | else | |
940 | ap_sta_no_session_timeout(hapd, sta); | |
941 | ||
942 | switch (auth_alg) { | |
943 | case WLAN_AUTH_OPEN: | |
944 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
945 | HOSTAPD_LEVEL_DEBUG, | |
946 | "authentication OK (open system)"); | |
6fc6879b JM |
947 | sta->flags |= WLAN_STA_AUTH; |
948 | wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH); | |
949 | sta->auth_alg = WLAN_AUTH_OPEN; | |
950 | mlme_authenticate_indication(hapd, sta); | |
6fc6879b JM |
951 | break; |
952 | case WLAN_AUTH_SHARED_KEY: | |
953 | resp = auth_shared_key(hapd, sta, auth_transaction, challenge, | |
954 | fc & WLAN_FC_ISWEP); | |
955 | sta->auth_alg = WLAN_AUTH_SHARED_KEY; | |
956 | mlme_authenticate_indication(hapd, sta); | |
957 | if (sta->challenge && auth_transaction == 1) { | |
958 | resp_ies[0] = WLAN_EID_CHALLENGE; | |
959 | resp_ies[1] = WLAN_AUTH_CHALLENGE_LEN; | |
960 | os_memcpy(resp_ies + 2, sta->challenge, | |
961 | WLAN_AUTH_CHALLENGE_LEN); | |
962 | resp_ies_len = 2 + WLAN_AUTH_CHALLENGE_LEN; | |
963 | } | |
964 | break; | |
965 | #ifdef CONFIG_IEEE80211R | |
966 | case WLAN_AUTH_FT: | |
967 | sta->auth_alg = WLAN_AUTH_FT; | |
968 | if (sta->wpa_sm == NULL) | |
969 | sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, | |
94ddef3e | 970 | sta->addr, NULL); |
6fc6879b JM |
971 | if (sta->wpa_sm == NULL) { |
972 | wpa_printf(MSG_DEBUG, "FT: Failed to initialize WPA " | |
973 | "state machine"); | |
974 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
975 | goto fail; | |
976 | } | |
977 | wpa_ft_process_auth(sta->wpa_sm, mgmt->bssid, | |
978 | auth_transaction, mgmt->u.auth.variable, | |
979 | len - IEEE80211_HDRLEN - | |
980 | sizeof(mgmt->u.auth), | |
981 | handle_auth_ft_finish, hapd); | |
982 | /* handle_auth_ft_finish() callback will complete auth. */ | |
983 | return; | |
984 | #endif /* CONFIG_IEEE80211R */ | |
c10347f2 JM |
985 | #ifdef CONFIG_SAE |
986 | case WLAN_AUTH_SAE: | |
c50d94f1 | 987 | #ifdef CONFIG_MESH |
afa2ffb4 JM |
988 | if (status_code == WLAN_STATUS_SUCCESS && |
989 | hapd->conf->mesh & MESH_ENABLED) { | |
c50d94f1 BC |
990 | if (sta->wpa_sm == NULL) |
991 | sta->wpa_sm = | |
992 | wpa_auth_sta_init(hapd->wpa_auth, | |
993 | sta->addr, NULL); | |
994 | if (sta->wpa_sm == NULL) { | |
995 | wpa_printf(MSG_DEBUG, | |
996 | "SAE: Failed to initialize WPA state machine"); | |
997 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
998 | goto fail; | |
999 | } | |
1000 | } | |
1001 | #endif /* CONFIG_MESH */ | |
afa2ffb4 JM |
1002 | handle_auth_sae(hapd, sta, mgmt, len, auth_transaction, |
1003 | status_code); | |
c10347f2 JM |
1004 | return; |
1005 | #endif /* CONFIG_SAE */ | |
6fc6879b JM |
1006 | } |
1007 | ||
1008 | fail: | |
2092597f MB |
1009 | os_free(identity); |
1010 | os_free(radius_cui); | |
f2a14be7 | 1011 | hostapd_free_psk_list(psk); |
2092597f | 1012 | |
6fc6879b JM |
1013 | send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg, |
1014 | auth_transaction + 1, resp, resp_ies, resp_ies_len); | |
1015 | } | |
1016 | ||
1017 | ||
d42a62b3 JM |
1018 | static int hostapd_get_aid(struct hostapd_data *hapd, struct sta_info *sta) |
1019 | { | |
2991469c JM |
1020 | int i, j = 32, aid; |
1021 | ||
d42a62b3 JM |
1022 | /* get a unique AID */ |
1023 | if (sta->aid > 0) { | |
1024 | wpa_printf(MSG_DEBUG, " old AID %d", sta->aid); | |
1025 | return 0; | |
1026 | } | |
1027 | ||
2991469c JM |
1028 | for (i = 0; i < AID_WORDS; i++) { |
1029 | if (hapd->sta_aid[i] == (u32) -1) | |
1030 | continue; | |
1031 | for (j = 0; j < 32; j++) { | |
1032 | if (!(hapd->sta_aid[i] & BIT(j))) | |
1033 | break; | |
1034 | } | |
1035 | if (j < 32) | |
d42a62b3 | 1036 | break; |
d42a62b3 | 1037 | } |
2991469c JM |
1038 | if (j == 32) |
1039 | return -1; | |
1040 | aid = i * 32 + j + 1; | |
1041 | if (aid > 2007) | |
1042 | return -1; | |
d42a62b3 | 1043 | |
2991469c JM |
1044 | sta->aid = aid; |
1045 | hapd->sta_aid[i] |= BIT(j); | |
d42a62b3 JM |
1046 | wpa_printf(MSG_DEBUG, " new AID %d", sta->aid); |
1047 | return 0; | |
1048 | } | |
1049 | ||
1050 | ||
5586f500 JM |
1051 | static u16 check_ssid(struct hostapd_data *hapd, struct sta_info *sta, |
1052 | const u8 *ssid_ie, size_t ssid_ie_len) | |
6fc6879b | 1053 | { |
5586f500 JM |
1054 | if (ssid_ie == NULL) |
1055 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
6fc6879b | 1056 | |
5586f500 JM |
1057 | if (ssid_ie_len != hapd->conf->ssid.ssid_len || |
1058 | os_memcmp(ssid_ie, hapd->conf->ssid.ssid, ssid_ie_len) != 0) { | |
5586f500 JM |
1059 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, |
1060 | HOSTAPD_LEVEL_INFO, | |
1061 | "Station tried to associate with unknown SSID " | |
b37d582e | 1062 | "'%s'", wpa_ssid_txt(ssid_ie, ssid_ie_len)); |
5586f500 | 1063 | return WLAN_STATUS_UNSPECIFIED_FAILURE; |
b0194fe0 JM |
1064 | } |
1065 | ||
5586f500 JM |
1066 | return WLAN_STATUS_SUCCESS; |
1067 | } | |
6fc6879b | 1068 | |
6fc6879b | 1069 | |
5586f500 JM |
1070 | static u16 check_wmm(struct hostapd_data *hapd, struct sta_info *sta, |
1071 | const u8 *wmm_ie, size_t wmm_ie_len) | |
1072 | { | |
3ae0800c | 1073 | sta->flags &= ~WLAN_STA_WMM; |
5d061637 | 1074 | sta->qosinfo = 0; |
5586f500 | 1075 | if (wmm_ie && hapd->conf->wmm_enabled) { |
5f32f79c | 1076 | struct wmm_information_element *wmm; |
5f32f79c | 1077 | |
c84b868a | 1078 | if (!hostapd_eid_wmm_valid(hapd, wmm_ie, wmm_ie_len)) { |
6fc6879b JM |
1079 | hostapd_logger(hapd, sta->addr, |
1080 | HOSTAPD_MODULE_WPA, | |
1081 | HOSTAPD_LEVEL_DEBUG, | |
3ae0800c | 1082 | "invalid WMM element in association " |
6fc6879b | 1083 | "request"); |
5f32f79c EP |
1084 | return WLAN_STATUS_UNSPECIFIED_FAILURE; |
1085 | } | |
1086 | ||
1087 | sta->flags |= WLAN_STA_WMM; | |
1088 | wmm = (struct wmm_information_element *) wmm_ie; | |
5d061637 | 1089 | sta->qosinfo = wmm->qos_info; |
6fc6879b | 1090 | } |
5586f500 JM |
1091 | return WLAN_STATUS_SUCCESS; |
1092 | } | |
6fc6879b | 1093 | |
5586f500 JM |
1094 | |
1095 | static u16 copy_supp_rates(struct hostapd_data *hapd, struct sta_info *sta, | |
1096 | struct ieee802_11_elems *elems) | |
1097 | { | |
1098 | if (!elems->supp_rates) { | |
1099 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
6fc6879b JM |
1100 | HOSTAPD_LEVEL_DEBUG, |
1101 | "No supported rates element in AssocReq"); | |
5586f500 | 1102 | return WLAN_STATUS_UNSPECIFIED_FAILURE; |
6fc6879b JM |
1103 | } |
1104 | ||
3489cfb0 JM |
1105 | if (elems->supp_rates_len + elems->ext_supp_rates_len > |
1106 | sizeof(sta->supported_rates)) { | |
5586f500 | 1107 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, |
6fc6879b | 1108 | HOSTAPD_LEVEL_DEBUG, |
3489cfb0 JM |
1109 | "Invalid supported rates element length %d+%d", |
1110 | elems->supp_rates_len, | |
1111 | elems->ext_supp_rates_len); | |
5586f500 | 1112 | return WLAN_STATUS_UNSPECIFIED_FAILURE; |
6fc6879b JM |
1113 | } |
1114 | ||
3489cfb0 JM |
1115 | sta->supported_rates_len = merge_byte_arrays( |
1116 | sta->supported_rates, sizeof(sta->supported_rates), | |
1117 | elems->supp_rates, elems->supp_rates_len, | |
1118 | elems->ext_supp_rates, elems->ext_supp_rates_len); | |
6fc6879b | 1119 | |
5586f500 JM |
1120 | return WLAN_STATUS_SUCCESS; |
1121 | } | |
1122 | ||
1123 | ||
c551700f KP |
1124 | static u16 check_ext_capab(struct hostapd_data *hapd, struct sta_info *sta, |
1125 | const u8 *ext_capab_ie, size_t ext_capab_ie_len) | |
1126 | { | |
1127 | #ifdef CONFIG_INTERWORKING | |
1128 | /* check for QoS Map support */ | |
1129 | if (ext_capab_ie_len >= 5) { | |
1130 | if (ext_capab_ie[4] & 0x01) | |
1131 | sta->qos_map_enabled = 1; | |
1132 | } | |
1133 | #endif /* CONFIG_INTERWORKING */ | |
1134 | ||
1135 | return WLAN_STATUS_SUCCESS; | |
1136 | } | |
1137 | ||
1138 | ||
5586f500 | 1139 | static u16 check_assoc_ies(struct hostapd_data *hapd, struct sta_info *sta, |
b57e086c | 1140 | const u8 *ies, size_t ies_len, int reassoc) |
5586f500 JM |
1141 | { |
1142 | struct ieee802_11_elems elems; | |
1143 | u16 resp; | |
ba091c06 | 1144 | const u8 *wpa_ie; |
5586f500 | 1145 | size_t wpa_ie_len; |
94ddef3e | 1146 | const u8 *p2p_dev_addr = NULL; |
5586f500 JM |
1147 | |
1148 | if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) { | |
1149 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
1150 | HOSTAPD_LEVEL_INFO, "Station sent an invalid " | |
1151 | "association request"); | |
1152 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1153 | } | |
1154 | ||
1155 | resp = check_ssid(hapd, sta, elems.ssid, elems.ssid_len); | |
1156 | if (resp != WLAN_STATUS_SUCCESS) | |
1157 | return resp; | |
1158 | resp = check_wmm(hapd, sta, elems.wmm, elems.wmm_len); | |
c551700f KP |
1159 | if (resp != WLAN_STATUS_SUCCESS) |
1160 | return resp; | |
1161 | resp = check_ext_capab(hapd, sta, elems.ext_capab, elems.ext_capab_len); | |
5586f500 JM |
1162 | if (resp != WLAN_STATUS_SUCCESS) |
1163 | return resp; | |
1164 | resp = copy_supp_rates(hapd, sta, &elems); | |
1165 | if (resp != WLAN_STATUS_SUCCESS) | |
1166 | return resp; | |
d45354be | 1167 | #ifdef CONFIG_IEEE80211N |
f39b07d7 | 1168 | resp = copy_sta_ht_capab(hapd, sta, elems.ht_capabilities, |
5586f500 JM |
1169 | elems.ht_capabilities_len); |
1170 | if (resp != WLAN_STATUS_SUCCESS) | |
1171 | return resp; | |
29448243 JM |
1172 | if (hapd->iconf->ieee80211n && hapd->iconf->require_ht && |
1173 | !(sta->flags & WLAN_STA_HT)) { | |
1174 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
1175 | HOSTAPD_LEVEL_INFO, "Station does not support " | |
1176 | "mandatory HT PHY - reject association"); | |
1177 | return WLAN_STATUS_ASSOC_DENIED_NO_HT; | |
1178 | } | |
d45354be | 1179 | #endif /* CONFIG_IEEE80211N */ |
5586f500 | 1180 | |
de3cdf35 MP |
1181 | #ifdef CONFIG_IEEE80211AC |
1182 | resp = copy_sta_vht_capab(hapd, sta, elems.vht_capabilities, | |
1183 | elems.vht_capabilities_len); | |
1184 | if (resp != WLAN_STATUS_SUCCESS) | |
1185 | return resp; | |
8a458116 MK |
1186 | |
1187 | resp = set_sta_vht_opmode(hapd, sta, elems.vht_opmode_notif); | |
1188 | if (resp != WLAN_STATUS_SUCCESS) | |
1189 | return resp; | |
1190 | ||
140e850a MP |
1191 | if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht && |
1192 | !(sta->flags & WLAN_STA_VHT)) { | |
1193 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
1194 | HOSTAPD_LEVEL_INFO, "Station does not support " | |
1195 | "mandatory VHT PHY - reject association"); | |
13b24a76 | 1196 | return WLAN_STATUS_ASSOC_DENIED_NO_VHT; |
140e850a | 1197 | } |
de3cdf35 MP |
1198 | #endif /* CONFIG_IEEE80211AC */ |
1199 | ||
94ddef3e JM |
1200 | #ifdef CONFIG_P2P |
1201 | if (elems.p2p) { | |
1202 | wpabuf_free(sta->p2p_ie); | |
1203 | sta->p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, | |
1204 | P2P_IE_VENDOR_TYPE); | |
1205 | if (sta->p2p_ie) | |
1206 | p2p_dev_addr = p2p_get_go_dev_addr(sta->p2p_ie); | |
1207 | } else { | |
1208 | wpabuf_free(sta->p2p_ie); | |
1209 | sta->p2p_ie = NULL; | |
1210 | } | |
1211 | #endif /* CONFIG_P2P */ | |
1212 | ||
6fc6879b JM |
1213 | if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) { |
1214 | wpa_ie = elems.rsn_ie; | |
1215 | wpa_ie_len = elems.rsn_ie_len; | |
1216 | } else if ((hapd->conf->wpa & WPA_PROTO_WPA) && | |
1217 | elems.wpa_ie) { | |
1218 | wpa_ie = elems.wpa_ie; | |
1219 | wpa_ie_len = elems.wpa_ie_len; | |
1220 | } else { | |
1221 | wpa_ie = NULL; | |
1222 | wpa_ie_len = 0; | |
1223 | } | |
5586f500 | 1224 | |
ad08c363 | 1225 | #ifdef CONFIG_WPS |
17f6b900 | 1226 | sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS | WLAN_STA_WPS2); |
c47cf42e JM |
1227 | if (hapd->conf->wps_state && elems.wps_ie) { |
1228 | wpa_printf(MSG_DEBUG, "STA included WPS IE in (Re)Association " | |
1229 | "Request - assume WPS is used"); | |
1230 | sta->flags |= WLAN_STA_WPS; | |
1231 | wpabuf_free(sta->wps_ie); | |
16e46ec0 JM |
1232 | sta->wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, |
1233 | WPS_IE_VENDOR_TYPE); | |
17f6b900 JM |
1234 | if (sta->wps_ie && wps_is_20(sta->wps_ie)) { |
1235 | wpa_printf(MSG_DEBUG, "WPS: STA supports WPS 2.0"); | |
1236 | sta->flags |= WLAN_STA_WPS2; | |
1237 | } | |
c47cf42e JM |
1238 | wpa_ie = NULL; |
1239 | wpa_ie_len = 0; | |
54f489be JM |
1240 | if (sta->wps_ie && wps_validate_assoc_req(sta->wps_ie) < 0) { |
1241 | wpa_printf(MSG_DEBUG, "WPS: Invalid WPS IE in " | |
1242 | "(Re)Association Request - reject"); | |
1243 | return WLAN_STATUS_INVALID_IE; | |
1244 | } | |
c47cf42e JM |
1245 | } else if (hapd->conf->wps_state && wpa_ie == NULL) { |
1246 | wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE in " | |
1247 | "(Re)Association Request - possible WPS use"); | |
1248 | sta->flags |= WLAN_STA_MAYBE_WPS; | |
ad08c363 JM |
1249 | } else |
1250 | #endif /* CONFIG_WPS */ | |
6fc6879b | 1251 | if (hapd->conf->wpa && wpa_ie == NULL) { |
5586f500 JM |
1252 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, |
1253 | HOSTAPD_LEVEL_INFO, | |
1254 | "No WPA/RSN IE in association request"); | |
1255 | return WLAN_STATUS_INVALID_IE; | |
6fc6879b JM |
1256 | } |
1257 | ||
1258 | if (hapd->conf->wpa && wpa_ie) { | |
1259 | int res; | |
1260 | wpa_ie -= 2; | |
1261 | wpa_ie_len += 2; | |
1262 | if (sta->wpa_sm == NULL) | |
1263 | sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, | |
94ddef3e JM |
1264 | sta->addr, |
1265 | p2p_dev_addr); | |
6fc6879b | 1266 | if (sta->wpa_sm == NULL) { |
5586f500 JM |
1267 | wpa_printf(MSG_WARNING, "Failed to initialize WPA " |
1268 | "state machine"); | |
1269 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
6fc6879b JM |
1270 | } |
1271 | res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm, | |
1272 | wpa_ie, wpa_ie_len, | |
1273 | elems.mdie, elems.mdie_len); | |
1274 | if (res == WPA_INVALID_GROUP) | |
1275 | resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID; | |
1276 | else if (res == WPA_INVALID_PAIRWISE) | |
1277 | resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID; | |
1278 | else if (res == WPA_INVALID_AKMP) | |
1279 | resp = WLAN_STATUS_AKMP_NOT_VALID; | |
1280 | else if (res == WPA_ALLOC_FAIL) | |
1281 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1282 | #ifdef CONFIG_IEEE80211W | |
1283 | else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION) | |
9a9876bf | 1284 | resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION; |
6fc6879b | 1285 | else if (res == WPA_INVALID_MGMT_GROUP_CIPHER) |
9a9876bf | 1286 | resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION; |
6fc6879b JM |
1287 | #endif /* CONFIG_IEEE80211W */ |
1288 | else if (res == WPA_INVALID_MDIE) | |
1289 | resp = WLAN_STATUS_INVALID_MDIE; | |
1290 | else if (res != WPA_IE_OK) | |
1291 | resp = WLAN_STATUS_INVALID_IE; | |
1292 | if (resp != WLAN_STATUS_SUCCESS) | |
5586f500 | 1293 | return resp; |
f3f7540e | 1294 | #ifdef CONFIG_IEEE80211W |
45c94154 JM |
1295 | if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out && |
1296 | sta->sa_query_count > 0) | |
1297 | ap_check_sa_query_timeout(hapd, sta); | |
8f4617c6 JM |
1298 | if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out && |
1299 | (!reassoc || sta->auth_alg != WLAN_AUTH_FT)) { | |
5d22a1d5 | 1300 | /* |
93b76319 JM |
1301 | * STA has already been associated with MFP and SA |
1302 | * Query timeout has not been reached. Reject the | |
1303 | * association attempt temporarily and start SA Query, | |
1304 | * if one is not pending. | |
5d22a1d5 JM |
1305 | */ |
1306 | ||
93b76319 JM |
1307 | if (sta->sa_query_count == 0) |
1308 | ap_sta_start_sa_query(hapd, sta); | |
5d22a1d5 | 1309 | |
5586f500 | 1310 | return WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY; |
5d22a1d5 JM |
1311 | } |
1312 | ||
f3f7540e JM |
1313 | if (wpa_auth_uses_mfp(sta->wpa_sm)) |
1314 | sta->flags |= WLAN_STA_MFP; | |
1315 | else | |
1316 | sta->flags &= ~WLAN_STA_MFP; | |
1317 | #endif /* CONFIG_IEEE80211W */ | |
6fc6879b JM |
1318 | |
1319 | #ifdef CONFIG_IEEE80211R | |
1320 | if (sta->auth_alg == WLAN_AUTH_FT) { | |
1321 | if (!reassoc) { | |
1322 | wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried " | |
1323 | "to use association (not " | |
1324 | "re-association) with FT auth_alg", | |
1325 | MAC2STR(sta->addr)); | |
5586f500 | 1326 | return WLAN_STATUS_UNSPECIFIED_FAILURE; |
6fc6879b JM |
1327 | } |
1328 | ||
5586f500 JM |
1329 | resp = wpa_ft_validate_reassoc(sta->wpa_sm, ies, |
1330 | ies_len); | |
6fc6879b | 1331 | if (resp != WLAN_STATUS_SUCCESS) |
5586f500 | 1332 | return resp; |
6fc6879b JM |
1333 | } |
1334 | #endif /* CONFIG_IEEE80211R */ | |
5586f500 | 1335 | |
c10347f2 JM |
1336 | #ifdef CONFIG_SAE |
1337 | if (wpa_auth_uses_sae(sta->wpa_sm) && | |
f2991170 JM |
1338 | sta->auth_alg == WLAN_AUTH_OPEN) { |
1339 | struct rsn_pmksa_cache_entry *sa; | |
1340 | sa = wpa_auth_sta_get_pmksa(sta->wpa_sm); | |
1341 | if (!sa || sa->akmp != WPA_KEY_MGMT_SAE) { | |
1342 | wpa_printf(MSG_DEBUG, | |
1343 | "SAE: No PMKSA cache entry found for " | |
1344 | MACSTR, MAC2STR(sta->addr)); | |
1345 | return WLAN_STATUS_INVALID_PMKID; | |
1346 | } | |
1347 | wpa_printf(MSG_DEBUG, "SAE: " MACSTR | |
1348 | " using PMKSA caching", MAC2STR(sta->addr)); | |
1349 | } else if (wpa_auth_uses_sae(sta->wpa_sm) && | |
1350 | sta->auth_alg != WLAN_AUTH_SAE && | |
1351 | !(sta->auth_alg == WLAN_AUTH_FT && | |
1352 | wpa_auth_uses_ft_sae(sta->wpa_sm))) { | |
c10347f2 JM |
1353 | wpa_printf(MSG_DEBUG, "SAE: " MACSTR " tried to use " |
1354 | "SAE AKM after non-SAE auth_alg %u", | |
1355 | MAC2STR(sta->addr), sta->auth_alg); | |
1356 | return WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG; | |
1357 | } | |
1358 | #endif /* CONFIG_SAE */ | |
1359 | ||
ff36ff00 | 1360 | #ifdef CONFIG_IEEE80211N |
f0c7a986 | 1361 | if ((sta->flags & (WLAN_STA_HT | WLAN_STA_VHT)) && |
ff36ff00 | 1362 | wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) { |
5586f500 JM |
1363 | hostapd_logger(hapd, sta->addr, |
1364 | HOSTAPD_MODULE_IEEE80211, | |
1365 | HOSTAPD_LEVEL_INFO, | |
1366 | "Station tried to use TKIP with HT " | |
1367 | "association"); | |
1368 | return WLAN_STATUS_CIPHER_REJECTED_PER_POLICY; | |
ff36ff00 JM |
1369 | } |
1370 | #endif /* CONFIG_IEEE80211N */ | |
a14896e8 JM |
1371 | #ifdef CONFIG_HS20 |
1372 | } else if (hapd->conf->osen) { | |
1373 | if (elems.osen == NULL) { | |
1374 | hostapd_logger( | |
1375 | hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
1376 | HOSTAPD_LEVEL_INFO, | |
1377 | "No HS 2.0 OSEN element in association request"); | |
1378 | return WLAN_STATUS_INVALID_IE; | |
1379 | } | |
1380 | ||
1381 | wpa_printf(MSG_DEBUG, "HS 2.0: OSEN association"); | |
1382 | if (sta->wpa_sm == NULL) | |
1383 | sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, | |
1384 | sta->addr, NULL); | |
1385 | if (sta->wpa_sm == NULL) { | |
1386 | wpa_printf(MSG_WARNING, "Failed to initialize WPA " | |
1387 | "state machine"); | |
1388 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1389 | } | |
1390 | if (wpa_validate_osen(hapd->wpa_auth, sta->wpa_sm, | |
1391 | elems.osen - 2, elems.osen_len + 2) < 0) | |
1392 | return WLAN_STATUS_INVALID_IE; | |
1393 | #endif /* CONFIG_HS20 */ | |
a8d05fca JM |
1394 | } else |
1395 | wpa_auth_sta_no_wpa(sta->wpa_sm); | |
6fc6879b | 1396 | |
b305c684 | 1397 | #ifdef CONFIG_P2P |
3f4ce13f | 1398 | p2p_group_notif_assoc(hapd->p2p_group, sta->addr, ies, ies_len); |
b305c684 JM |
1399 | #endif /* CONFIG_P2P */ |
1400 | ||
f403dcd6 JM |
1401 | #ifdef CONFIG_HS20 |
1402 | wpabuf_free(sta->hs20_ie); | |
1403 | if (elems.hs20 && elems.hs20_len > 4) { | |
1404 | sta->hs20_ie = wpabuf_alloc_copy(elems.hs20 + 4, | |
1405 | elems.hs20_len - 4); | |
1406 | } else | |
1407 | sta->hs20_ie = NULL; | |
1408 | #endif /* CONFIG_HS20 */ | |
1409 | ||
5586f500 JM |
1410 | return WLAN_STATUS_SUCCESS; |
1411 | } | |
1412 | ||
1413 | ||
1414 | static void send_deauth(struct hostapd_data *hapd, const u8 *addr, | |
1415 | u16 reason_code) | |
1416 | { | |
1417 | int send_len; | |
1418 | struct ieee80211_mgmt reply; | |
1419 | ||
1420 | os_memset(&reply, 0, sizeof(reply)); | |
1421 | reply.frame_control = | |
1422 | IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_DEAUTH); | |
1423 | os_memcpy(reply.da, addr, ETH_ALEN); | |
1424 | os_memcpy(reply.sa, hapd->own_addr, ETH_ALEN); | |
1425 | os_memcpy(reply.bssid, hapd->own_addr, ETH_ALEN); | |
1426 | ||
1427 | send_len = IEEE80211_HDRLEN + sizeof(reply.u.deauth); | |
1428 | reply.u.deauth.reason_code = host_to_le16(reason_code); | |
1429 | ||
8cfa3527 | 1430 | if (hostapd_drv_send_mlme(hapd, &reply, send_len, 0) < 0) |
5586f500 JM |
1431 | wpa_printf(MSG_INFO, "Failed to send deauth: %s", |
1432 | strerror(errno)); | |
1433 | } | |
1434 | ||
1435 | ||
1436 | static void send_assoc_resp(struct hostapd_data *hapd, struct sta_info *sta, | |
b57e086c | 1437 | u16 status_code, int reassoc, const u8 *ies, |
5586f500 JM |
1438 | size_t ies_len) |
1439 | { | |
1440 | int send_len; | |
1441 | u8 buf[sizeof(struct ieee80211_mgmt) + 1024]; | |
1442 | struct ieee80211_mgmt *reply; | |
1443 | u8 *p; | |
1444 | ||
1445 | os_memset(buf, 0, sizeof(buf)); | |
1446 | reply = (struct ieee80211_mgmt *) buf; | |
1447 | reply->frame_control = | |
1448 | IEEE80211_FC(WLAN_FC_TYPE_MGMT, | |
1449 | (reassoc ? WLAN_FC_STYPE_REASSOC_RESP : | |
1450 | WLAN_FC_STYPE_ASSOC_RESP)); | |
1451 | os_memcpy(reply->da, sta->addr, ETH_ALEN); | |
1452 | os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN); | |
1453 | os_memcpy(reply->bssid, hapd->own_addr, ETH_ALEN); | |
1454 | ||
1455 | send_len = IEEE80211_HDRLEN; | |
1456 | send_len += sizeof(reply->u.assoc_resp); | |
1457 | reply->u.assoc_resp.capab_info = | |
1458 | host_to_le16(hostapd_own_capab_info(hapd, sta, 0)); | |
1459 | reply->u.assoc_resp.status_code = host_to_le16(status_code); | |
93a1caec | 1460 | reply->u.assoc_resp.aid = host_to_le16(sta->aid | BIT(14) | BIT(15)); |
5586f500 JM |
1461 | /* Supported rates */ |
1462 | p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable); | |
1463 | /* Extended supported rates */ | |
1464 | p = hostapd_eid_ext_supp_rates(hapd, p); | |
5586f500 JM |
1465 | |
1466 | #ifdef CONFIG_IEEE80211R | |
1467 | if (status_code == WLAN_STATUS_SUCCESS) { | |
1468 | /* IEEE 802.11r: Mobility Domain Information, Fast BSS | |
1469 | * Transition Information, RSN, [RIC Response] */ | |
1470 | p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p, | |
1471 | buf + sizeof(buf) - p, | |
1472 | sta->auth_alg, ies, ies_len); | |
1473 | } | |
1474 | #endif /* CONFIG_IEEE80211R */ | |
1475 | ||
1476 | #ifdef CONFIG_IEEE80211W | |
1477 | if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY) | |
1478 | p = hostapd_eid_assoc_comeback_time(hapd, sta, p); | |
1479 | #endif /* CONFIG_IEEE80211W */ | |
1480 | ||
1bc774a1 JM |
1481 | #ifdef CONFIG_IEEE80211N |
1482 | p = hostapd_eid_ht_capabilities(hapd, p); | |
1483 | p = hostapd_eid_ht_operation(hapd, p); | |
1484 | #endif /* CONFIG_IEEE80211N */ | |
1485 | ||
14708b50 MP |
1486 | #ifdef CONFIG_IEEE80211AC |
1487 | p = hostapd_eid_vht_capabilities(hapd, p); | |
1488 | p = hostapd_eid_vht_operation(hapd, p); | |
1489 | #endif /* CONFIG_IEEE80211AC */ | |
1490 | ||
1161ff1e | 1491 | p = hostapd_eid_ext_capab(hapd, p); |
b6668734 | 1492 | p = hostapd_eid_bss_max_idle_period(hapd, p); |
c551700f KP |
1493 | if (sta->qos_map_enabled) |
1494 | p = hostapd_eid_qos_map_set(hapd, p); | |
1161ff1e | 1495 | |
1bc774a1 JM |
1496 | if (sta->flags & WLAN_STA_WMM) |
1497 | p = hostapd_eid_wmm(hapd, p); | |
1498 | ||
ed7a09f9 | 1499 | #ifdef CONFIG_WPS |
71093e5e JM |
1500 | if ((sta->flags & WLAN_STA_WPS) || |
1501 | ((sta->flags & WLAN_STA_MAYBE_WPS) && hapd->conf->wpa)) { | |
ed7a09f9 JM |
1502 | struct wpabuf *wps = wps_build_assoc_resp_ie(); |
1503 | if (wps) { | |
1504 | os_memcpy(p, wpabuf_head(wps), wpabuf_len(wps)); | |
1505 | p += wpabuf_len(wps); | |
1506 | wpabuf_free(wps); | |
1507 | } | |
1508 | } | |
1509 | #endif /* CONFIG_WPS */ | |
1510 | ||
8ccbe415 JM |
1511 | #ifdef CONFIG_P2P |
1512 | if (sta->p2p_ie) { | |
1513 | struct wpabuf *p2p_resp_ie; | |
1514 | enum p2p_status_code status; | |
1515 | switch (status_code) { | |
1516 | case WLAN_STATUS_SUCCESS: | |
1517 | status = P2P_SC_SUCCESS; | |
1518 | break; | |
1519 | case WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA: | |
1520 | status = P2P_SC_FAIL_LIMIT_REACHED; | |
1521 | break; | |
1522 | default: | |
1523 | status = P2P_SC_FAIL_INVALID_PARAMS; | |
1524 | break; | |
1525 | } | |
1526 | p2p_resp_ie = p2p_group_assoc_resp_ie(hapd->p2p_group, status); | |
1527 | if (p2p_resp_ie) { | |
1528 | os_memcpy(p, wpabuf_head(p2p_resp_ie), | |
1529 | wpabuf_len(p2p_resp_ie)); | |
1530 | p += wpabuf_len(p2p_resp_ie); | |
1531 | wpabuf_free(p2p_resp_ie); | |
1532 | } | |
1533 | } | |
1534 | #endif /* CONFIG_P2P */ | |
1535 | ||
962473c1 JM |
1536 | #ifdef CONFIG_P2P_MANAGER |
1537 | if (hapd->conf->p2p & P2P_MANAGE) | |
1538 | p = hostapd_eid_p2p_manage(hapd, p); | |
1539 | #endif /* CONFIG_P2P_MANAGER */ | |
1540 | ||
5586f500 JM |
1541 | send_len += p - reply->u.assoc_resp.variable; |
1542 | ||
8cfa3527 | 1543 | if (hostapd_drv_send_mlme(hapd, reply, send_len, 0) < 0) |
5586f500 JM |
1544 | wpa_printf(MSG_INFO, "Failed to send assoc resp: %s", |
1545 | strerror(errno)); | |
1546 | } | |
1547 | ||
1548 | ||
1549 | static void handle_assoc(struct hostapd_data *hapd, | |
b57e086c JM |
1550 | const struct ieee80211_mgmt *mgmt, size_t len, |
1551 | int reassoc) | |
5586f500 | 1552 | { |
38cb0a2d | 1553 | u16 capab_info, listen_interval, seq_ctrl, fc; |
5586f500 | 1554 | u16 resp = WLAN_STATUS_SUCCESS; |
b57e086c | 1555 | const u8 *pos; |
5586f500 JM |
1556 | int left, i; |
1557 | struct sta_info *sta; | |
1558 | ||
1559 | if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) : | |
1560 | sizeof(mgmt->u.assoc_req))) { | |
61323e70 JM |
1561 | wpa_printf(MSG_INFO, "handle_assoc(reassoc=%d) - too short payload (len=%lu)", |
1562 | reassoc, (unsigned long) len); | |
5586f500 JM |
1563 | return; |
1564 | } | |
1565 | ||
c2aff6b1 JB |
1566 | #ifdef CONFIG_TESTING_OPTIONS |
1567 | if (reassoc) { | |
06df2aa6 | 1568 | if (hapd->iconf->ignore_reassoc_probability > 0.0 && |
c2aff6b1 JB |
1569 | drand48() < hapd->iconf->ignore_reassoc_probability) { |
1570 | wpa_printf(MSG_INFO, | |
1571 | "TESTING: ignoring reassoc request from " | |
1572 | MACSTR, MAC2STR(mgmt->sa)); | |
1573 | return; | |
1574 | } | |
1575 | } else { | |
06df2aa6 | 1576 | if (hapd->iconf->ignore_assoc_probability > 0.0 && |
c2aff6b1 JB |
1577 | drand48() < hapd->iconf->ignore_assoc_probability) { |
1578 | wpa_printf(MSG_INFO, | |
1579 | "TESTING: ignoring assoc request from " | |
1580 | MACSTR, MAC2STR(mgmt->sa)); | |
1581 | return; | |
1582 | } | |
1583 | } | |
1584 | #endif /* CONFIG_TESTING_OPTIONS */ | |
1585 | ||
38cb0a2d IP |
1586 | fc = le_to_host16(mgmt->frame_control); |
1587 | seq_ctrl = le_to_host16(mgmt->seq_ctrl); | |
1588 | ||
5586f500 JM |
1589 | if (reassoc) { |
1590 | capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info); | |
1591 | listen_interval = le_to_host16( | |
1592 | mgmt->u.reassoc_req.listen_interval); | |
1593 | wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR | |
1594 | " capab_info=0x%02x listen_interval=%d current_ap=" | |
38cb0a2d | 1595 | MACSTR " seq_ctrl=0x%x%s", |
5586f500 | 1596 | MAC2STR(mgmt->sa), capab_info, listen_interval, |
38cb0a2d IP |
1597 | MAC2STR(mgmt->u.reassoc_req.current_ap), |
1598 | seq_ctrl, (fc & WLAN_FC_RETRY) ? " retry" : ""); | |
5586f500 JM |
1599 | left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req)); |
1600 | pos = mgmt->u.reassoc_req.variable; | |
1601 | } else { | |
1602 | capab_info = le_to_host16(mgmt->u.assoc_req.capab_info); | |
1603 | listen_interval = le_to_host16( | |
1604 | mgmt->u.assoc_req.listen_interval); | |
1605 | wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR | |
38cb0a2d IP |
1606 | " capab_info=0x%02x listen_interval=%d " |
1607 | "seq_ctrl=0x%x%s", | |
1608 | MAC2STR(mgmt->sa), capab_info, listen_interval, | |
1609 | seq_ctrl, (fc & WLAN_FC_RETRY) ? " retry" : ""); | |
5586f500 JM |
1610 | left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req)); |
1611 | pos = mgmt->u.assoc_req.variable; | |
1612 | } | |
1613 | ||
1614 | sta = ap_get_sta(hapd, mgmt->sa); | |
1615 | #ifdef CONFIG_IEEE80211R | |
1616 | if (sta && sta->auth_alg == WLAN_AUTH_FT && | |
1617 | (sta->flags & WLAN_STA_AUTH) == 0) { | |
1618 | wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate " | |
1619 | "prior to authentication since it is using " | |
1620 | "over-the-DS FT", MAC2STR(mgmt->sa)); | |
1621 | } else | |
1622 | #endif /* CONFIG_IEEE80211R */ | |
1623 | if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) { | |
1624 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
1625 | HOSTAPD_LEVEL_INFO, "Station tried to " | |
1626 | "associate before authentication " | |
1627 | "(aid=%d flags=0x%x)", | |
1628 | sta ? sta->aid : -1, | |
1629 | sta ? sta->flags : 0); | |
1630 | send_deauth(hapd, mgmt->sa, | |
1631 | WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA); | |
1632 | return; | |
1633 | } | |
1634 | ||
38cb0a2d IP |
1635 | if ((fc & WLAN_FC_RETRY) && |
1636 | sta->last_seq_ctrl != WLAN_INVALID_MGMT_SEQ && | |
1637 | sta->last_seq_ctrl == seq_ctrl && | |
1638 | sta->last_subtype == reassoc ? WLAN_FC_STYPE_REASSOC_REQ : | |
1639 | WLAN_FC_STYPE_ASSOC_REQ) { | |
1640 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
1641 | HOSTAPD_LEVEL_DEBUG, | |
1642 | "Drop repeated association frame seq_ctrl=0x%x", | |
1643 | seq_ctrl); | |
1644 | return; | |
1645 | } | |
1646 | sta->last_seq_ctrl = seq_ctrl; | |
1647 | sta->last_subtype = reassoc ? WLAN_FC_STYPE_REASSOC_REQ : | |
1648 | WLAN_FC_STYPE_ASSOC_REQ; | |
1649 | ||
5586f500 JM |
1650 | if (hapd->tkip_countermeasures) { |
1651 | resp = WLAN_REASON_MICHAEL_MIC_FAILURE; | |
1652 | goto fail; | |
1653 | } | |
1654 | ||
1655 | if (listen_interval > hapd->conf->max_listen_interval) { | |
1656 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
1657 | HOSTAPD_LEVEL_DEBUG, | |
1658 | "Too large Listen Interval (%d)", | |
1659 | listen_interval); | |
1660 | resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE; | |
1661 | goto fail; | |
1662 | } | |
1663 | ||
1664 | /* followed by SSID and Supported rates; and HT capabilities if 802.11n | |
1665 | * is used */ | |
1666 | resp = check_assoc_ies(hapd, sta, pos, left, reassoc); | |
1667 | if (resp != WLAN_STATUS_SUCCESS) | |
1668 | goto fail; | |
1669 | ||
1670 | if (hostapd_get_aid(hapd, sta) < 0) { | |
1671 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
1672 | HOSTAPD_LEVEL_INFO, "No room for more AIDs"); | |
1673 | resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA; | |
1674 | goto fail; | |
1675 | } | |
1676 | ||
1677 | sta->capability = capab_info; | |
1678 | sta->listen_interval = listen_interval; | |
1679 | ||
6fc6879b JM |
1680 | if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G) |
1681 | sta->flags |= WLAN_STA_NONERP; | |
1682 | for (i = 0; i < sta->supported_rates_len; i++) { | |
1683 | if ((sta->supported_rates[i] & 0x7f) > 22) { | |
1684 | sta->flags &= ~WLAN_STA_NONERP; | |
1685 | break; | |
1686 | } | |
1687 | } | |
1688 | if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) { | |
1689 | sta->nonerp_set = 1; | |
1690 | hapd->iface->num_sta_non_erp++; | |
1691 | if (hapd->iface->num_sta_non_erp == 1) | |
1692 | ieee802_11_set_beacons(hapd->iface); | |
1693 | } | |
1694 | ||
1695 | if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) && | |
1696 | !sta->no_short_slot_time_set) { | |
1697 | sta->no_short_slot_time_set = 1; | |
1698 | hapd->iface->num_sta_no_short_slot_time++; | |
1699 | if (hapd->iface->current_mode->mode == | |
1700 | HOSTAPD_MODE_IEEE80211G && | |
1701 | hapd->iface->num_sta_no_short_slot_time == 1) | |
1702 | ieee802_11_set_beacons(hapd->iface); | |
1703 | } | |
1704 | ||
1705 | if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) | |
1706 | sta->flags |= WLAN_STA_SHORT_PREAMBLE; | |
1707 | else | |
1708 | sta->flags &= ~WLAN_STA_SHORT_PREAMBLE; | |
1709 | ||
1710 | if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) && | |
1711 | !sta->no_short_preamble_set) { | |
1712 | sta->no_short_preamble_set = 1; | |
1713 | hapd->iface->num_sta_no_short_preamble++; | |
1714 | if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G | |
1715 | && hapd->iface->num_sta_no_short_preamble == 1) | |
1716 | ieee802_11_set_beacons(hapd->iface); | |
1717 | } | |
1718 | ||
d45354be | 1719 | #ifdef CONFIG_IEEE80211N |
5586f500 | 1720 | update_ht_state(hapd, sta); |
d45354be | 1721 | #endif /* CONFIG_IEEE80211N */ |
de9289c8 | 1722 | |
6fc6879b JM |
1723 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, |
1724 | HOSTAPD_LEVEL_DEBUG, | |
1725 | "association OK (aid %d)", sta->aid); | |
1726 | /* Station will be marked associated, after it acknowledges AssocResp | |
1727 | */ | |
b8281964 | 1728 | sta->flags |= WLAN_STA_ASSOC_REQ_OK; |
6fc6879b | 1729 | |
6f5c8dbd JM |
1730 | #ifdef CONFIG_IEEE80211W |
1731 | if ((sta->flags & WLAN_STA_MFP) && sta->sa_query_timed_out) { | |
1732 | wpa_printf(MSG_DEBUG, "Allowing %sassociation after timed out " | |
1733 | "SA Query procedure", reassoc ? "re" : ""); | |
1734 | /* TODO: Send a protected Disassociate frame to the STA using | |
1735 | * the old key and Reason Code "Previous Authentication no | |
1736 | * longer valid". Make sure this is only sent protected since | |
1737 | * unprotected frame would be received by the STA that is now | |
1738 | * trying to associate. | |
1739 | */ | |
1740 | } | |
1741 | #endif /* CONFIG_IEEE80211W */ | |
1742 | ||
6fc6879b JM |
1743 | /* Make sure that the previously registered inactivity timer will not |
1744 | * remove the STA immediately. */ | |
1745 | sta->timeout_next = STA_NULLFUNC; | |
1746 | ||
1747 | fail: | |
5586f500 | 1748 | send_assoc_resp(hapd, sta, resp, reassoc, pos, left); |
6fc6879b JM |
1749 | } |
1750 | ||
1751 | ||
6fc6879b | 1752 | static void handle_disassoc(struct hostapd_data *hapd, |
f8b1f695 | 1753 | const struct ieee80211_mgmt *mgmt, size_t len) |
6fc6879b JM |
1754 | { |
1755 | struct sta_info *sta; | |
1756 | ||
1757 | if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) { | |
61323e70 JM |
1758 | wpa_printf(MSG_INFO, "handle_disassoc - too short payload (len=%lu)", |
1759 | (unsigned long) len); | |
6fc6879b JM |
1760 | return; |
1761 | } | |
1762 | ||
1763 | wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d", | |
1764 | MAC2STR(mgmt->sa), | |
1765 | le_to_host16(mgmt->u.disassoc.reason_code)); | |
1766 | ||
6fc6879b JM |
1767 | sta = ap_get_sta(hapd, mgmt->sa); |
1768 | if (sta == NULL) { | |
61323e70 JM |
1769 | wpa_printf(MSG_INFO, "Station " MACSTR " trying to disassociate, but it is not associated", |
1770 | MAC2STR(mgmt->sa)); | |
6fc6879b JM |
1771 | return; |
1772 | } | |
1773 | ||
ae055af4 | 1774 | ap_sta_set_authorized(hapd, sta, 0); |
38cb0a2d | 1775 | sta->last_seq_ctrl = WLAN_INVALID_MGMT_SEQ; |
b8281964 | 1776 | sta->flags &= ~(WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK); |
6fc6879b JM |
1777 | wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC); |
1778 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
1779 | HOSTAPD_LEVEL_INFO, "disassociated"); | |
1780 | sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST; | |
1781 | ieee802_1x_notify_port_enabled(sta->eapol_sm, 0); | |
1782 | /* Stop Accounting and IEEE 802.1X sessions, but leave the STA | |
1783 | * authenticated. */ | |
1784 | accounting_sta_stop(hapd, sta); | |
1785 | ieee802_1x_free_station(sta); | |
7d597d46 | 1786 | if (sta->ipaddr) |
ed4ddb6d | 1787 | hostapd_drv_br_delete_ip_neigh(hapd, 4, (u8 *) &sta->ipaddr); |
bd00c431 | 1788 | ap_sta_ip6addr_del(hapd, sta); |
51e2a27a | 1789 | hostapd_drv_sta_remove(hapd, sta->addr); |
6fc6879b JM |
1790 | |
1791 | if (sta->timeout_next == STA_NULLFUNC || | |
1792 | sta->timeout_next == STA_DISASSOC) { | |
1793 | sta->timeout_next = STA_DEAUTH; | |
1794 | eloop_cancel_timeout(ap_handle_timer, hapd, sta); | |
1795 | eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer, | |
1796 | hapd, sta); | |
1797 | } | |
1798 | ||
1799 | mlme_disassociate_indication( | |
1800 | hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code)); | |
1801 | } | |
1802 | ||
1803 | ||
1804 | static void handle_deauth(struct hostapd_data *hapd, | |
f8b1f695 | 1805 | const struct ieee80211_mgmt *mgmt, size_t len) |
6fc6879b JM |
1806 | { |
1807 | struct sta_info *sta; | |
1808 | ||
1809 | if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) { | |
3ec1e902 JM |
1810 | wpa_msg(hapd->msg_ctx, MSG_DEBUG, "handle_deauth - too short " |
1811 | "payload (len=%lu)", (unsigned long) len); | |
6fc6879b JM |
1812 | return; |
1813 | } | |
1814 | ||
3ec1e902 | 1815 | wpa_msg(hapd->msg_ctx, MSG_DEBUG, "deauthentication: STA=" MACSTR |
24d75245 BG |
1816 | " reason_code=%d", |
1817 | MAC2STR(mgmt->sa), le_to_host16(mgmt->u.deauth.reason_code)); | |
6fc6879b | 1818 | |
6fc6879b JM |
1819 | sta = ap_get_sta(hapd, mgmt->sa); |
1820 | if (sta == NULL) { | |
3ec1e902 JM |
1821 | wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR " trying " |
1822 | "to deauthenticate, but it is not authenticated", | |
24d75245 | 1823 | MAC2STR(mgmt->sa)); |
6fc6879b JM |
1824 | return; |
1825 | } | |
1826 | ||
ae055af4 | 1827 | ap_sta_set_authorized(hapd, sta, 0); |
38cb0a2d | 1828 | sta->last_seq_ctrl = WLAN_INVALID_MGMT_SEQ; |
b8281964 JM |
1829 | sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC | |
1830 | WLAN_STA_ASSOC_REQ_OK); | |
6fc6879b JM |
1831 | wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH); |
1832 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
1833 | HOSTAPD_LEVEL_DEBUG, "deauthenticated"); | |
1834 | mlme_deauthenticate_indication( | |
1835 | hapd, sta, le_to_host16(mgmt->u.deauth.reason_code)); | |
1836 | sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST; | |
1837 | ieee802_1x_notify_port_enabled(sta->eapol_sm, 0); | |
1838 | ap_free_sta(hapd, sta); | |
1839 | } | |
1840 | ||
1841 | ||
1842 | static void handle_beacon(struct hostapd_data *hapd, | |
b57e086c | 1843 | const struct ieee80211_mgmt *mgmt, size_t len, |
6fc6879b JM |
1844 | struct hostapd_frame_info *fi) |
1845 | { | |
1846 | struct ieee802_11_elems elems; | |
1847 | ||
1848 | if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) { | |
61323e70 JM |
1849 | wpa_printf(MSG_INFO, "handle_beacon - too short payload (len=%lu)", |
1850 | (unsigned long) len); | |
6fc6879b JM |
1851 | return; |
1852 | } | |
1853 | ||
3d536eb4 | 1854 | (void) ieee802_11_parse_elems(mgmt->u.beacon.variable, |
6fc6879b JM |
1855 | len - (IEEE80211_HDRLEN + |
1856 | sizeof(mgmt->u.beacon)), &elems, | |
1857 | 0); | |
1858 | ||
6fc6879b JM |
1859 | ap_list_process_beacon(hapd->iface, mgmt, &elems, fi); |
1860 | } | |
1861 | ||
1862 | ||
5d22a1d5 | 1863 | #ifdef CONFIG_IEEE80211W |
88b4b424 | 1864 | |
912b34f0 JM |
1865 | static int hostapd_sa_query_action(struct hostapd_data *hapd, |
1866 | const struct ieee80211_mgmt *mgmt, | |
1867 | size_t len) | |
5d22a1d5 | 1868 | { |
b57e086c | 1869 | const u8 *end; |
5d22a1d5 | 1870 | |
93b76319 JM |
1871 | end = mgmt->u.action.u.sa_query_resp.trans_id + |
1872 | WLAN_SA_QUERY_TR_ID_LEN; | |
5d22a1d5 | 1873 | if (((u8 *) mgmt) + len < end) { |
93b76319 | 1874 | wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short SA Query Action " |
5d22a1d5 | 1875 | "frame (len=%lu)", (unsigned long) len); |
912b34f0 | 1876 | return 0; |
5d22a1d5 JM |
1877 | } |
1878 | ||
d4370eac MP |
1879 | ieee802_11_sa_query_action(hapd, mgmt->sa, |
1880 | mgmt->u.action.u.sa_query_resp.action, | |
1881 | mgmt->u.action.u.sa_query_resp.trans_id); | |
912b34f0 | 1882 | return 1; |
5d22a1d5 | 1883 | } |
5d22a1d5 JM |
1884 | |
1885 | ||
c4e281fd JM |
1886 | static int robust_action_frame(u8 category) |
1887 | { | |
1888 | return category != WLAN_ACTION_PUBLIC && | |
1889 | category != WLAN_ACTION_HT; | |
1890 | } | |
9f64b827 | 1891 | #endif /* CONFIG_IEEE80211W */ |
c4e281fd JM |
1892 | |
1893 | ||
912b34f0 JM |
1894 | static int handle_action(struct hostapd_data *hapd, |
1895 | const struct ieee80211_mgmt *mgmt, size_t len) | |
6fc6879b | 1896 | { |
c4e281fd | 1897 | struct sta_info *sta; |
46eeedac | 1898 | sta = ap_get_sta(hapd, mgmt->sa); |
c4e281fd | 1899 | |
6fc6879b JM |
1900 | if (len < IEEE80211_HDRLEN + 1) { |
1901 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
1902 | HOSTAPD_LEVEL_DEBUG, | |
1903 | "handle_action - too short payload (len=%lu)", | |
1904 | (unsigned long) len); | |
912b34f0 | 1905 | return 0; |
6fc6879b JM |
1906 | } |
1907 | ||
c79938a5 JM |
1908 | if (mgmt->u.action.category != WLAN_ACTION_PUBLIC && |
1909 | (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))) { | |
1910 | wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored Action " | |
1911 | "frame (category=%u) from unassociated STA " MACSTR, | |
1912 | MAC2STR(mgmt->sa), mgmt->u.action.category); | |
912b34f0 | 1913 | return 0; |
c79938a5 JM |
1914 | } |
1915 | ||
c4e281fd JM |
1916 | #ifdef CONFIG_IEEE80211W |
1917 | if (sta && (sta->flags & WLAN_STA_MFP) && | |
7b2c42f8 JM |
1918 | !(mgmt->frame_control & host_to_le16(WLAN_FC_ISWEP)) && |
1919 | robust_action_frame(mgmt->u.action.category)) { | |
c4e281fd JM |
1920 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, |
1921 | HOSTAPD_LEVEL_DEBUG, | |
1922 | "Dropped unprotected Robust Action frame from " | |
1923 | "an MFP STA"); | |
912b34f0 | 1924 | return 0; |
c4e281fd JM |
1925 | } |
1926 | #endif /* CONFIG_IEEE80211W */ | |
1927 | ||
38cb0a2d IP |
1928 | if (sta) { |
1929 | u16 fc = le_to_host16(mgmt->frame_control); | |
1930 | u16 seq_ctrl = le_to_host16(mgmt->seq_ctrl); | |
1931 | ||
1932 | if ((fc & WLAN_FC_RETRY) && | |
1933 | sta->last_seq_ctrl != WLAN_INVALID_MGMT_SEQ && | |
1934 | sta->last_seq_ctrl == seq_ctrl && | |
1935 | sta->last_subtype == WLAN_FC_STYPE_ACTION) { | |
1936 | hostapd_logger(hapd, sta->addr, | |
1937 | HOSTAPD_MODULE_IEEE80211, | |
1938 | HOSTAPD_LEVEL_DEBUG, | |
1939 | "Drop repeated action frame seq_ctrl=0x%x", | |
1940 | seq_ctrl); | |
1941 | return 1; | |
1942 | } | |
1943 | ||
1944 | sta->last_seq_ctrl = seq_ctrl; | |
1945 | sta->last_subtype = WLAN_FC_STYPE_ACTION; | |
1946 | } | |
1947 | ||
6fc6879b JM |
1948 | switch (mgmt->u.action.category) { |
1949 | #ifdef CONFIG_IEEE80211R | |
1950 | case WLAN_ACTION_FT: | |
d6c6b1fb JM |
1951 | if (!sta || |
1952 | wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action, | |
6fc6879b JM |
1953 | len - IEEE80211_HDRLEN)) |
1954 | break; | |
912b34f0 | 1955 | return 1; |
6fc6879b | 1956 | #endif /* CONFIG_IEEE80211R */ |
c2a71408 | 1957 | case WLAN_ACTION_WMM: |
3ae0800c | 1958 | hostapd_wmm_action(hapd, mgmt, len); |
912b34f0 | 1959 | return 1; |
5d22a1d5 | 1960 | #ifdef CONFIG_IEEE80211W |
93b76319 | 1961 | case WLAN_ACTION_SA_QUERY: |
912b34f0 | 1962 | return hostapd_sa_query_action(hapd, mgmt, len); |
5d22a1d5 | 1963 | #endif /* CONFIG_IEEE80211W */ |
c79938a5 JM |
1964 | #ifdef CONFIG_WNM |
1965 | case WLAN_ACTION_WNM: | |
dbfb8e82 JM |
1966 | ieee802_11_rx_wnm_action_ap(hapd, mgmt, len); |
1967 | return 1; | |
c79938a5 | 1968 | #endif /* CONFIG_WNM */ |
c706d5aa | 1969 | case WLAN_ACTION_PUBLIC: |
5ce00d09 | 1970 | case WLAN_ACTION_PROTECTED_DUAL: |
587d60d2 PX |
1971 | #ifdef CONFIG_IEEE80211N |
1972 | if (mgmt->u.action.u.public_action.action == | |
1973 | WLAN_PA_20_40_BSS_COEX) { | |
1974 | wpa_printf(MSG_DEBUG, | |
1975 | "HT20/40 coex mgmt frame received from STA " | |
1976 | MACSTR, MAC2STR(mgmt->sa)); | |
1977 | hostapd_2040_coex_action(hapd, mgmt, len); | |
1978 | } | |
1979 | #endif /* CONFIG_IEEE80211N */ | |
c706d5aa JM |
1980 | if (hapd->public_action_cb) { |
1981 | hapd->public_action_cb(hapd->public_action_cb_ctx, | |
1982 | (u8 *) mgmt, len, | |
1983 | hapd->iface->freq); | |
c706d5aa | 1984 | } |
2d9ffe1e | 1985 | if (hapd->public_action_cb2) { |
8dabf4bb | 1986 | hapd->public_action_cb2(hapd->public_action_cb2_ctx, |
2d9ffe1e JM |
1987 | (u8 *) mgmt, len, |
1988 | hapd->iface->freq); | |
1989 | } | |
1990 | if (hapd->public_action_cb || hapd->public_action_cb2) | |
912b34f0 | 1991 | return 1; |
c706d5aa | 1992 | break; |
e44f8bf2 JM |
1993 | case WLAN_ACTION_VENDOR_SPECIFIC: |
1994 | if (hapd->vendor_action_cb) { | |
1995 | if (hapd->vendor_action_cb(hapd->vendor_action_cb_ctx, | |
1996 | (u8 *) mgmt, len, | |
1997 | hapd->iface->freq) == 0) | |
912b34f0 | 1998 | return 1; |
e44f8bf2 JM |
1999 | } |
2000 | break; | |
6fc6879b JM |
2001 | } |
2002 | ||
2003 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
2004 | HOSTAPD_LEVEL_DEBUG, | |
2005 | "handle_action - unknown action category %d or invalid " | |
2006 | "frame", | |
2007 | mgmt->u.action.category); | |
2008 | if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) && | |
2009 | !(mgmt->sa[0] & 0x01)) { | |
b57e086c JM |
2010 | struct ieee80211_mgmt *resp; |
2011 | ||
6fc6879b JM |
2012 | /* |
2013 | * IEEE 802.11-REVma/D9.0 - 7.3.1.11 | |
2014 | * Return the Action frame to the source without change | |
2015 | * except that MSB of the Category set to 1. | |
2016 | */ | |
2017 | wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action " | |
2018 | "frame back to sender"); | |
b57e086c JM |
2019 | resp = os_malloc(len); |
2020 | if (resp == NULL) | |
912b34f0 | 2021 | return 0; |
b57e086c JM |
2022 | os_memcpy(resp, mgmt, len); |
2023 | os_memcpy(resp->da, resp->sa, ETH_ALEN); | |
2024 | os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN); | |
2025 | os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN); | |
2026 | resp->u.action.category |= 0x80; | |
2027 | ||
41fe8b42 JM |
2028 | if (hostapd_drv_send_mlme(hapd, resp, len, 0) < 0) { |
2029 | wpa_printf(MSG_ERROR, "IEEE 802.11: Failed to send " | |
2030 | "Action frame"); | |
2031 | } | |
b57e086c | 2032 | os_free(resp); |
6fc6879b | 2033 | } |
912b34f0 JM |
2034 | |
2035 | return 1; | |
6fc6879b JM |
2036 | } |
2037 | ||
2038 | ||
2039 | /** | |
2040 | * ieee802_11_mgmt - process incoming IEEE 802.11 management frames | |
2041 | * @hapd: hostapd BSS data structure (the BSS to which the management frame was | |
2042 | * sent to) | |
2043 | * @buf: management frame data (starting from IEEE 802.11 header) | |
2044 | * @len: length of frame data in octets | |
a17df5fb | 2045 | * @fi: meta data about received frame (signal level, etc.) |
6fc6879b JM |
2046 | * |
2047 | * Process all incoming IEEE 802.11 management frames. This will be called for | |
2048 | * each frame received from the kernel driver through wlan#ap interface. In | |
2049 | * addition, it can be called to re-inserted pending frames (e.g., when using | |
2050 | * external RADIUS server as an MAC ACL). | |
2051 | */ | |
912b34f0 JM |
2052 | int ieee802_11_mgmt(struct hostapd_data *hapd, const u8 *buf, size_t len, |
2053 | struct hostapd_frame_info *fi) | |
6fc6879b | 2054 | { |
f8b1f695 | 2055 | struct ieee80211_mgmt *mgmt; |
6fc6879b | 2056 | int broadcast; |
f8b1f695 | 2057 | u16 fc, stype; |
912b34f0 | 2058 | int ret = 0; |
f8b1f695 | 2059 | |
cbcf92b4 | 2060 | if (len < 24) |
912b34f0 | 2061 | return 0; |
cbcf92b4 | 2062 | |
f8b1f695 JM |
2063 | mgmt = (struct ieee80211_mgmt *) buf; |
2064 | fc = le_to_host16(mgmt->frame_control); | |
2065 | stype = WLAN_FC_GET_STYPE(fc); | |
6fc6879b JM |
2066 | |
2067 | if (stype == WLAN_FC_STYPE_BEACON) { | |
2068 | handle_beacon(hapd, mgmt, len, fi); | |
912b34f0 | 2069 | return 1; |
6fc6879b JM |
2070 | } |
2071 | ||
6fc6879b JM |
2072 | broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff && |
2073 | mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff && | |
2074 | mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff; | |
2075 | ||
2076 | if (!broadcast && | |
3eeee931 AN |
2077 | #ifdef CONFIG_P2P |
2078 | /* Invitation responses can be sent with the peer MAC as BSSID */ | |
2079 | !((hapd->conf->p2p & P2P_GROUP_OWNER) && | |
2080 | stype == WLAN_FC_STYPE_ACTION) && | |
2081 | #endif /* CONFIG_P2P */ | |
f3e9899e BC |
2082 | #ifdef CONFIG_MESH |
2083 | !(hapd->conf->mesh & MESH_ENABLED) && | |
2084 | #endif /* CONFIG_MESH */ | |
fe2c5241 | 2085 | os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) { |
61323e70 JM |
2086 | wpa_printf(MSG_INFO, "MGMT: BSSID=" MACSTR " not our address", |
2087 | MAC2STR(mgmt->bssid)); | |
912b34f0 | 2088 | return 0; |
6fc6879b JM |
2089 | } |
2090 | ||
2091 | ||
2092 | if (stype == WLAN_FC_STYPE_PROBE_REQ) { | |
baf513d6 | 2093 | handle_probe_req(hapd, mgmt, len, fi->ssi_signal); |
912b34f0 | 2094 | return 1; |
6fc6879b JM |
2095 | } |
2096 | ||
2097 | if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) { | |
2098 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
2099 | HOSTAPD_LEVEL_DEBUG, | |
2100 | "MGMT: DA=" MACSTR " not our address", | |
2101 | MAC2STR(mgmt->da)); | |
912b34f0 | 2102 | return 0; |
6fc6879b JM |
2103 | } |
2104 | ||
2105 | switch (stype) { | |
2106 | case WLAN_FC_STYPE_AUTH: | |
2107 | wpa_printf(MSG_DEBUG, "mgmt::auth"); | |
2108 | handle_auth(hapd, mgmt, len); | |
912b34f0 | 2109 | ret = 1; |
6fc6879b JM |
2110 | break; |
2111 | case WLAN_FC_STYPE_ASSOC_REQ: | |
2112 | wpa_printf(MSG_DEBUG, "mgmt::assoc_req"); | |
2113 | handle_assoc(hapd, mgmt, len, 0); | |
912b34f0 | 2114 | ret = 1; |
6fc6879b | 2115 | break; |
6fc6879b JM |
2116 | case WLAN_FC_STYPE_REASSOC_REQ: |
2117 | wpa_printf(MSG_DEBUG, "mgmt::reassoc_req"); | |
2118 | handle_assoc(hapd, mgmt, len, 1); | |
912b34f0 | 2119 | ret = 1; |
6fc6879b JM |
2120 | break; |
2121 | case WLAN_FC_STYPE_DISASSOC: | |
2122 | wpa_printf(MSG_DEBUG, "mgmt::disassoc"); | |
2123 | handle_disassoc(hapd, mgmt, len); | |
912b34f0 | 2124 | ret = 1; |
6fc6879b JM |
2125 | break; |
2126 | case WLAN_FC_STYPE_DEAUTH: | |
3ec1e902 | 2127 | wpa_msg(hapd->msg_ctx, MSG_DEBUG, "mgmt::deauth"); |
6fc6879b | 2128 | handle_deauth(hapd, mgmt, len); |
912b34f0 | 2129 | ret = 1; |
6fc6879b JM |
2130 | break; |
2131 | case WLAN_FC_STYPE_ACTION: | |
2132 | wpa_printf(MSG_DEBUG, "mgmt::action"); | |
912b34f0 | 2133 | ret = handle_action(hapd, mgmt, len); |
6fc6879b JM |
2134 | break; |
2135 | default: | |
2136 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
2137 | HOSTAPD_LEVEL_DEBUG, | |
2138 | "unknown mgmt frame subtype %d", stype); | |
2139 | break; | |
2140 | } | |
912b34f0 JM |
2141 | |
2142 | return ret; | |
6fc6879b JM |
2143 | } |
2144 | ||
2145 | ||
2146 | static void handle_auth_cb(struct hostapd_data *hapd, | |
f8b1f695 | 2147 | const struct ieee80211_mgmt *mgmt, |
6fc6879b JM |
2148 | size_t len, int ok) |
2149 | { | |
2150 | u16 auth_alg, auth_transaction, status_code; | |
2151 | struct sta_info *sta; | |
2152 | ||
2153 | if (!ok) { | |
2154 | hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211, | |
2155 | HOSTAPD_LEVEL_NOTICE, | |
2156 | "did not acknowledge authentication response"); | |
2157 | return; | |
2158 | } | |
2159 | ||
2160 | if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) { | |
61323e70 JM |
2161 | wpa_printf(MSG_INFO, "handle_auth_cb - too short payload (len=%lu)", |
2162 | (unsigned long) len); | |
6fc6879b JM |
2163 | return; |
2164 | } | |
2165 | ||
2166 | auth_alg = le_to_host16(mgmt->u.auth.auth_alg); | |
2167 | auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction); | |
2168 | status_code = le_to_host16(mgmt->u.auth.status_code); | |
2169 | ||
2170 | sta = ap_get_sta(hapd, mgmt->da); | |
2171 | if (!sta) { | |
61323e70 JM |
2172 | wpa_printf(MSG_INFO, "handle_auth_cb: STA " MACSTR " not found", |
2173 | MAC2STR(mgmt->da)); | |
6fc6879b JM |
2174 | return; |
2175 | } | |
2176 | ||
2177 | if (status_code == WLAN_STATUS_SUCCESS && | |
2178 | ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) || | |
2179 | (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) { | |
2180 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
2181 | HOSTAPD_LEVEL_INFO, "authenticated"); | |
2182 | sta->flags |= WLAN_STA_AUTH; | |
2183 | } | |
2184 | } | |
2185 | ||
2186 | ||
69dd2967 SM |
2187 | static void hostapd_set_wds_encryption(struct hostapd_data *hapd, |
2188 | struct sta_info *sta, | |
2189 | char *ifname_wds) | |
2190 | { | |
2191 | int i; | |
2192 | struct hostapd_ssid *ssid = sta->ssid; | |
2193 | ||
2194 | if (hapd->conf->ieee802_1x || hapd->conf->wpa) | |
2195 | return; | |
2196 | ||
2197 | for (i = 0; i < 4; i++) { | |
2198 | if (ssid->wep.key[i] && | |
2199 | hostapd_drv_set_key(ifname_wds, hapd, WPA_ALG_WEP, NULL, i, | |
2200 | i == ssid->wep.idx, NULL, 0, | |
2201 | ssid->wep.key[i], ssid->wep.len[i])) { | |
2202 | wpa_printf(MSG_WARNING, | |
2203 | "Could not set WEP keys for WDS interface; %s", | |
2204 | ifname_wds); | |
2205 | break; | |
2206 | } | |
2207 | } | |
2208 | } | |
2209 | ||
2210 | ||
6fc6879b | 2211 | static void handle_assoc_cb(struct hostapd_data *hapd, |
f8b1f695 | 2212 | const struct ieee80211_mgmt *mgmt, |
6fc6879b JM |
2213 | size_t len, int reassoc, int ok) |
2214 | { | |
2215 | u16 status; | |
2216 | struct sta_info *sta; | |
2217 | int new_assoc = 1; | |
fc4e2d95 | 2218 | struct ieee80211_ht_capabilities ht_cap; |
a9a1d0f0 | 2219 | struct ieee80211_vht_capabilities vht_cap; |
6fc6879b | 2220 | |
6fc6879b JM |
2221 | if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) : |
2222 | sizeof(mgmt->u.assoc_resp))) { | |
61323e70 JM |
2223 | wpa_printf(MSG_INFO, "handle_assoc_cb(reassoc=%d) - too short payload (len=%lu)", |
2224 | reassoc, (unsigned long) len); | |
6fc6879b JM |
2225 | return; |
2226 | } | |
2227 | ||
6fc6879b JM |
2228 | sta = ap_get_sta(hapd, mgmt->da); |
2229 | if (!sta) { | |
61323e70 JM |
2230 | wpa_printf(MSG_INFO, "handle_assoc_cb: STA " MACSTR " not found", |
2231 | MAC2STR(mgmt->da)); | |
6fc6879b JM |
2232 | return; |
2233 | } | |
2234 | ||
22b42372 FF |
2235 | if (!ok) { |
2236 | hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211, | |
2237 | HOSTAPD_LEVEL_DEBUG, | |
2238 | "did not acknowledge association response"); | |
2239 | sta->flags &= ~WLAN_STA_ASSOC_REQ_OK; | |
2240 | return; | |
2241 | } | |
2242 | ||
2243 | if (reassoc) | |
2244 | status = le_to_host16(mgmt->u.reassoc_resp.status_code); | |
2245 | else | |
2246 | status = le_to_host16(mgmt->u.assoc_resp.status_code); | |
2247 | ||
6fc6879b | 2248 | if (status != WLAN_STATUS_SUCCESS) |
5bdac4ab | 2249 | return; |
6fc6879b JM |
2250 | |
2251 | /* Stop previous accounting session, if one is started, and allocate | |
2252 | * new session id for the new session. */ | |
2253 | accounting_sta_stop(hapd, sta); | |
6fc6879b JM |
2254 | |
2255 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
2256 | HOSTAPD_LEVEL_INFO, | |
2fc98d02 JM |
2257 | "associated (aid %d)", |
2258 | sta->aid); | |
6fc6879b JM |
2259 | |
2260 | if (sta->flags & WLAN_STA_ASSOC) | |
2261 | new_assoc = 0; | |
2262 | sta->flags |= WLAN_STA_ASSOC; | |
3578e665 | 2263 | sta->flags &= ~WLAN_STA_WNM_SLEEP_MODE; |
a14896e8 | 2264 | if ((!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen) || |
ef580012 JM |
2265 | sta->auth_alg == WLAN_AUTH_FT) { |
2266 | /* | |
2267 | * Open, static WEP, or FT protocol; no separate authorization | |
2268 | * step. | |
2269 | */ | |
6905dcb1 | 2270 | ap_sta_set_authorized(hapd, sta, 1); |
515cf93f | 2271 | } |
6fc6879b JM |
2272 | |
2273 | if (reassoc) | |
2274 | mlme_reassociate_indication(hapd, sta); | |
2275 | else | |
2276 | mlme_associate_indication(hapd, sta); | |
2277 | ||
5d22a1d5 | 2278 | #ifdef CONFIG_IEEE80211W |
93b76319 | 2279 | sta->sa_query_timed_out = 0; |
5d22a1d5 JM |
2280 | #endif /* CONFIG_IEEE80211W */ |
2281 | ||
c140a228 JM |
2282 | /* |
2283 | * Remove the STA entry in order to make sure the STA PS state gets | |
2284 | * cleared and configuration gets updated in case of reassociation back | |
2285 | * to the same AP. | |
2286 | */ | |
51e2a27a | 2287 | hostapd_drv_sta_remove(hapd, sta->addr); |
c140a228 | 2288 | |
d45354be JM |
2289 | #ifdef CONFIG_IEEE80211N |
2290 | if (sta->flags & WLAN_STA_HT) | |
2291 | hostapd_get_ht_capab(hapd, sta->ht_capabilities, &ht_cap); | |
2292 | #endif /* CONFIG_IEEE80211N */ | |
a9a1d0f0 JB |
2293 | #ifdef CONFIG_IEEE80211AC |
2294 | if (sta->flags & WLAN_STA_VHT) | |
2295 | hostapd_get_vht_capab(hapd, sta->vht_capabilities, &vht_cap); | |
2296 | #endif /* CONFIG_IEEE80211AC */ | |
d45354be | 2297 | |
0e8a96a9 JM |
2298 | if (hostapd_sta_add(hapd, sta->addr, sta->aid, sta->capability, |
2299 | sta->supported_rates, sta->supported_rates_len, | |
2300 | sta->listen_interval, | |
d83ab1fe | 2301 | sta->flags & WLAN_STA_HT ? &ht_cap : NULL, |
a9a1d0f0 | 2302 | sta->flags & WLAN_STA_VHT ? &vht_cap : NULL, |
8a458116 | 2303 | sta->flags, sta->qosinfo, sta->vht_opmode)) { |
6fc6879b JM |
2304 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, |
2305 | HOSTAPD_LEVEL_NOTICE, | |
2306 | "Could not add STA to kernel driver"); | |
8666585b YAP |
2307 | |
2308 | ap_sta_disconnect(hapd, sta, sta->addr, | |
2309 | WLAN_REASON_DISASSOC_AP_BUSY); | |
2310 | ||
5bdac4ab | 2311 | return; |
6fc6879b JM |
2312 | } |
2313 | ||
69dd2967 SM |
2314 | if (sta->flags & WLAN_STA_WDS) { |
2315 | int ret; | |
2316 | char ifname_wds[IFNAMSIZ + 1]; | |
2317 | ||
2318 | ret = hostapd_set_wds_sta(hapd, ifname_wds, sta->addr, | |
2319 | sta->aid, 1); | |
2320 | if (!ret) | |
2321 | hostapd_set_wds_encryption(hapd, sta, ifname_wds); | |
2322 | } | |
7826ceae | 2323 | |
6fc6879b JM |
2324 | if (sta->eapol_sm == NULL) { |
2325 | /* | |
2326 | * This STA does not use RADIUS server for EAP authentication, | |
2327 | * so bind it to the selected VLAN interface now, since the | |
2328 | * interface selection is not going to change anymore. | |
2329 | */ | |
4254100d | 2330 | if (ap_sta_bind_vlan(hapd, sta, 0) < 0) |
5bdac4ab | 2331 | return; |
6fc6879b JM |
2332 | } else if (sta->vlan_id) { |
2333 | /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */ | |
4254100d | 2334 | if (ap_sta_bind_vlan(hapd, sta, 0) < 0) |
5bdac4ab | 2335 | return; |
6fc6879b | 2336 | } |
eddd8010 | 2337 | |
0e8a96a9 | 2338 | hostapd_set_sta_flags(hapd, sta); |
6fc6879b JM |
2339 | |
2340 | if (sta->auth_alg == WLAN_AUTH_FT) | |
2341 | wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT); | |
2342 | else | |
2343 | wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC); | |
d24df7c3 | 2344 | hapd->new_assoc_sta_cb(hapd, sta, !new_assoc); |
6fc6879b JM |
2345 | |
2346 | ieee802_1x_notify_port_enabled(sta->eapol_sm, 1); | |
6fc6879b JM |
2347 | } |
2348 | ||
2349 | ||
4dc03726 JM |
2350 | static void handle_deauth_cb(struct hostapd_data *hapd, |
2351 | const struct ieee80211_mgmt *mgmt, | |
2352 | size_t len, int ok) | |
2353 | { | |
2354 | struct sta_info *sta; | |
2355 | if (mgmt->da[0] & 0x01) | |
2356 | return; | |
2357 | sta = ap_get_sta(hapd, mgmt->da); | |
2358 | if (!sta) { | |
2359 | wpa_printf(MSG_DEBUG, "handle_deauth_cb: STA " MACSTR | |
2360 | " not found", MAC2STR(mgmt->da)); | |
2361 | return; | |
2362 | } | |
2363 | if (ok) | |
2364 | wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged deauth", | |
2365 | MAC2STR(sta->addr)); | |
2366 | else | |
2367 | wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge " | |
2368 | "deauth", MAC2STR(sta->addr)); | |
2369 | ||
2370 | ap_sta_deauth_cb(hapd, sta); | |
2371 | } | |
2372 | ||
2373 | ||
2374 | static void handle_disassoc_cb(struct hostapd_data *hapd, | |
2375 | const struct ieee80211_mgmt *mgmt, | |
2376 | size_t len, int ok) | |
2377 | { | |
2378 | struct sta_info *sta; | |
2379 | if (mgmt->da[0] & 0x01) | |
2380 | return; | |
2381 | sta = ap_get_sta(hapd, mgmt->da); | |
2382 | if (!sta) { | |
2383 | wpa_printf(MSG_DEBUG, "handle_disassoc_cb: STA " MACSTR | |
2384 | " not found", MAC2STR(mgmt->da)); | |
2385 | return; | |
2386 | } | |
2387 | if (ok) | |
2388 | wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged disassoc", | |
2389 | MAC2STR(sta->addr)); | |
2390 | else | |
2391 | wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge " | |
2392 | "disassoc", MAC2STR(sta->addr)); | |
2393 | ||
2394 | ap_sta_disassoc_cb(hapd, sta); | |
2395 | } | |
2396 | ||
2397 | ||
1c6e69cc JM |
2398 | /** |
2399 | * ieee802_11_mgmt_cb - Process management frame TX status callback | |
2400 | * @hapd: hostapd BSS data structure (the BSS from which the management frame | |
2401 | * was sent from) | |
2402 | * @buf: management frame data (starting from IEEE 802.11 header) | |
2403 | * @len: length of frame data in octets | |
2404 | * @stype: management frame subtype from frame control field | |
2405 | * @ok: Whether the frame was ACK'ed | |
2406 | */ | |
f8b1f695 | 2407 | void ieee802_11_mgmt_cb(struct hostapd_data *hapd, const u8 *buf, size_t len, |
6fc6879b JM |
2408 | u16 stype, int ok) |
2409 | { | |
f8b1f695 JM |
2410 | const struct ieee80211_mgmt *mgmt; |
2411 | mgmt = (const struct ieee80211_mgmt *) buf; | |
6fc6879b | 2412 | |
93827f45 JM |
2413 | #ifdef CONFIG_TESTING_OPTIONS |
2414 | if (hapd->ext_mgmt_frame_handling) { | |
2415 | wpa_msg(hapd->msg_ctx, MSG_INFO, "MGMT-TX-STATUS stype=%u ok=%d", | |
2416 | stype, ok); | |
2417 | return; | |
2418 | } | |
2419 | #endif /* CONFIG_TESTING_OPTIONS */ | |
2420 | ||
6fc6879b JM |
2421 | switch (stype) { |
2422 | case WLAN_FC_STYPE_AUTH: | |
2423 | wpa_printf(MSG_DEBUG, "mgmt::auth cb"); | |
2424 | handle_auth_cb(hapd, mgmt, len, ok); | |
2425 | break; | |
2426 | case WLAN_FC_STYPE_ASSOC_RESP: | |
2427 | wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb"); | |
2428 | handle_assoc_cb(hapd, mgmt, len, 0, ok); | |
2429 | break; | |
2430 | case WLAN_FC_STYPE_REASSOC_RESP: | |
2431 | wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb"); | |
2432 | handle_assoc_cb(hapd, mgmt, len, 1, ok); | |
2433 | break; | |
2434 | case WLAN_FC_STYPE_PROBE_RESP: | |
2d8bf732 | 2435 | wpa_printf(MSG_EXCESSIVE, "mgmt::proberesp cb"); |
6fc6879b JM |
2436 | break; |
2437 | case WLAN_FC_STYPE_DEAUTH: | |
4dc03726 JM |
2438 | wpa_printf(MSG_DEBUG, "mgmt::deauth cb"); |
2439 | handle_deauth_cb(hapd, mgmt, len, ok); | |
2440 | break; | |
2441 | case WLAN_FC_STYPE_DISASSOC: | |
2442 | wpa_printf(MSG_DEBUG, "mgmt::disassoc cb"); | |
2443 | handle_disassoc_cb(hapd, mgmt, len, ok); | |
6fc6879b | 2444 | break; |
5d22a1d5 JM |
2445 | case WLAN_FC_STYPE_ACTION: |
2446 | wpa_printf(MSG_DEBUG, "mgmt::action cb"); | |
2447 | break; | |
6fc6879b | 2448 | default: |
61323e70 | 2449 | wpa_printf(MSG_INFO, "unknown mgmt cb frame subtype %d", stype); |
6fc6879b JM |
2450 | break; |
2451 | } | |
2452 | } | |
2453 | ||
2454 | ||
6fc6879b JM |
2455 | int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen) |
2456 | { | |
2457 | /* TODO */ | |
2458 | return 0; | |
2459 | } | |
2460 | ||
2461 | ||
2462 | int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta, | |
2463 | char *buf, size_t buflen) | |
2464 | { | |
2465 | /* TODO */ | |
2466 | return 0; | |
2467 | } | |
2468 | ||
f8b1f695 JM |
2469 | |
2470 | void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr, | |
2471 | const u8 *buf, size_t len, int ack) | |
2472 | { | |
2473 | struct sta_info *sta; | |
2474 | struct hostapd_iface *iface = hapd->iface; | |
2475 | ||
2476 | sta = ap_get_sta(hapd, addr); | |
2477 | if (sta == NULL && iface->num_bss > 1) { | |
2478 | size_t j; | |
2479 | for (j = 0; j < iface->num_bss; j++) { | |
2480 | hapd = iface->bss[j]; | |
2481 | sta = ap_get_sta(hapd, addr); | |
2482 | if (sta) | |
2483 | break; | |
2484 | } | |
2485 | } | |
0c01d65d | 2486 | if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) |
f8b1f695 JM |
2487 | return; |
2488 | if (sta->flags & WLAN_STA_PENDING_POLL) { | |
2489 | wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending " | |
2490 | "activity poll", MAC2STR(sta->addr), | |
2491 | ack ? "ACKed" : "did not ACK"); | |
2492 | if (ack) | |
2493 | sta->flags &= ~WLAN_STA_PENDING_POLL; | |
2494 | } | |
2495 | ||
2496 | ieee802_1x_tx_status(hapd, sta, buf, len, ack); | |
2497 | } | |
2498 | ||
2499 | ||
dd840f79 JB |
2500 | void hostapd_eapol_tx_status(struct hostapd_data *hapd, const u8 *dst, |
2501 | const u8 *data, size_t len, int ack) | |
2502 | { | |
2503 | struct sta_info *sta; | |
2504 | struct hostapd_iface *iface = hapd->iface; | |
2505 | ||
2506 | sta = ap_get_sta(hapd, dst); | |
2507 | if (sta == NULL && iface->num_bss > 1) { | |
2508 | size_t j; | |
2509 | for (j = 0; j < iface->num_bss; j++) { | |
2510 | hapd = iface->bss[j]; | |
2511 | sta = ap_get_sta(hapd, dst); | |
2512 | if (sta) | |
2513 | break; | |
2514 | } | |
2515 | } | |
d9a38716 JM |
2516 | if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) { |
2517 | wpa_printf(MSG_DEBUG, "Ignore TX status for Data frame to STA " | |
2518 | MACSTR " that is not currently associated", | |
2519 | MAC2STR(dst)); | |
dd840f79 | 2520 | return; |
d9a38716 | 2521 | } |
dd840f79 JB |
2522 | |
2523 | ieee802_1x_eapol_tx_status(hapd, sta, data, len, ack); | |
2524 | } | |
2525 | ||
2526 | ||
bcf24348 JB |
2527 | void hostapd_client_poll_ok(struct hostapd_data *hapd, const u8 *addr) |
2528 | { | |
2529 | struct sta_info *sta; | |
2530 | struct hostapd_iface *iface = hapd->iface; | |
2531 | ||
2532 | sta = ap_get_sta(hapd, addr); | |
2533 | if (sta == NULL && iface->num_bss > 1) { | |
2534 | size_t j; | |
2535 | for (j = 0; j < iface->num_bss; j++) { | |
2536 | hapd = iface->bss[j]; | |
2537 | sta = ap_get_sta(hapd, addr); | |
2538 | if (sta) | |
2539 | break; | |
2540 | } | |
2541 | } | |
2542 | if (sta == NULL) | |
2543 | return; | |
2544 | if (!(sta->flags & WLAN_STA_PENDING_POLL)) | |
2545 | return; | |
2546 | ||
2547 | wpa_printf(MSG_DEBUG, "STA " MACSTR " ACKed pending " | |
2548 | "activity poll", MAC2STR(sta->addr)); | |
2549 | sta->flags &= ~WLAN_STA_PENDING_POLL; | |
2550 | } | |
2551 | ||
2552 | ||
fbbfcbac FF |
2553 | void ieee802_11_rx_from_unknown(struct hostapd_data *hapd, const u8 *src, |
2554 | int wds) | |
f8b1f695 JM |
2555 | { |
2556 | struct sta_info *sta; | |
2557 | ||
2558 | sta = ap_get_sta(hapd, src); | |
fbbfcbac | 2559 | if (sta && (sta->flags & WLAN_STA_ASSOC)) { |
99743811 FF |
2560 | if (!hapd->conf->wds_sta) |
2561 | return; | |
2562 | ||
fbbfcbac | 2563 | if (wds && !(sta->flags & WLAN_STA_WDS)) { |
69dd2967 SM |
2564 | int ret; |
2565 | char ifname_wds[IFNAMSIZ + 1]; | |
2566 | ||
fbbfcbac FF |
2567 | wpa_printf(MSG_DEBUG, "Enable 4-address WDS mode for " |
2568 | "STA " MACSTR " (aid %u)", | |
2569 | MAC2STR(sta->addr), sta->aid); | |
2570 | sta->flags |= WLAN_STA_WDS; | |
69dd2967 SM |
2571 | ret = hostapd_set_wds_sta(hapd, ifname_wds, |
2572 | sta->addr, sta->aid, 1); | |
2573 | if (!ret) | |
2574 | hostapd_set_wds_encryption(hapd, sta, | |
2575 | ifname_wds); | |
fbbfcbac | 2576 | } |
f8b1f695 | 2577 | return; |
fbbfcbac | 2578 | } |
f8b1f695 JM |
2579 | |
2580 | wpa_printf(MSG_DEBUG, "Data/PS-poll frame from not associated STA " | |
2581 | MACSTR, MAC2STR(src)); | |
1df492df JM |
2582 | if (src[0] & 0x01) { |
2583 | /* Broadcast bit set in SA?! Ignore the frame silently. */ | |
2584 | return; | |
2585 | } | |
2586 | ||
b8281964 JM |
2587 | if (sta && (sta->flags & WLAN_STA_ASSOC_REQ_OK)) { |
2588 | wpa_printf(MSG_DEBUG, "Association Response to the STA has " | |
2589 | "already been sent, but no TX status yet known - " | |
2590 | "ignore Class 3 frame issue with " MACSTR, | |
2591 | MAC2STR(src)); | |
2592 | return; | |
2593 | } | |
2594 | ||
f8b1f695 | 2595 | if (sta && (sta->flags & WLAN_STA_AUTH)) |
51e2a27a | 2596 | hostapd_drv_sta_disassoc( |
f8b1f695 JM |
2597 | hapd, src, |
2598 | WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); | |
2599 | else | |
51e2a27a | 2600 | hostapd_drv_sta_deauth( |
f8b1f695 JM |
2601 | hapd, src, |
2602 | WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); | |
2603 | } | |
2604 | ||
2605 | ||
6fc6879b | 2606 | #endif /* CONFIG_NATIVE_WINDOWS */ |