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1 | /* | |
2 | * hostapd / IEEE 802.11 Management | |
3 | * Copyright (c) 2002-2017, Jouni Malinen <j@w1.fi> | |
4 | * | |
5 | * This software may be distributed under the terms of the BSD license. | |
6 | * See README for more details. | |
7 | */ | |
8 | ||
9 | #include "utils/includes.h" | |
10 | ||
11 | #ifndef CONFIG_NATIVE_WINDOWS | |
12 | ||
13 | #include "utils/common.h" | |
14 | #include "utils/eloop.h" | |
15 | #include "crypto/crypto.h" | |
16 | #include "crypto/sha256.h" | |
17 | #include "crypto/random.h" | |
18 | #include "common/ieee802_11_defs.h" | |
19 | #include "common/ieee802_11_common.h" | |
20 | #include "common/wpa_ctrl.h" | |
21 | #include "common/sae.h" | |
22 | #include "radius/radius.h" | |
23 | #include "radius/radius_client.h" | |
24 | #include "p2p/p2p.h" | |
25 | #include "wps/wps.h" | |
26 | #include "fst/fst.h" | |
27 | #include "hostapd.h" | |
28 | #include "beacon.h" | |
29 | #include "ieee802_11_auth.h" | |
30 | #include "sta_info.h" | |
31 | #include "ieee802_1x.h" | |
32 | #include "wpa_auth.h" | |
33 | #include "pmksa_cache_auth.h" | |
34 | #include "wmm.h" | |
35 | #include "ap_list.h" | |
36 | #include "accounting.h" | |
37 | #include "ap_config.h" | |
38 | #include "ap_mlme.h" | |
39 | #include "p2p_hostapd.h" | |
40 | #include "ap_drv_ops.h" | |
41 | #include "wnm_ap.h" | |
42 | #include "hw_features.h" | |
43 | #include "ieee802_11.h" | |
44 | #include "dfs.h" | |
45 | #include "mbo_ap.h" | |
46 | #include "rrm.h" | |
47 | #include "taxonomy.h" | |
48 | #include "fils_hlp.h" | |
49 | #include "dpp_hostapd.h" | |
50 | #include "gas_query_ap.h" | |
51 | ||
52 | ||
53 | #ifdef CONFIG_FILS | |
54 | static struct wpabuf * | |
55 | prepare_auth_resp_fils(struct hostapd_data *hapd, | |
56 | struct sta_info *sta, u16 *resp, | |
57 | struct rsn_pmksa_cache_entry *pmksa, | |
58 | struct wpabuf *erp_resp, | |
59 | const u8 *msk, size_t msk_len, | |
60 | int *is_pub); | |
61 | #endif /* CONFIG_FILS */ | |
62 | ||
63 | u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid) | |
64 | { | |
65 | u8 *pos = eid; | |
66 | int i, num, count; | |
67 | ||
68 | if (hapd->iface->current_rates == NULL) | |
69 | return eid; | |
70 | ||
71 | *pos++ = WLAN_EID_SUPP_RATES; | |
72 | num = hapd->iface->num_rates; | |
73 | if (hapd->iconf->ieee80211n && hapd->iconf->require_ht) | |
74 | num++; | |
75 | if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht) | |
76 | num++; | |
77 | if (num > 8) { | |
78 | /* rest of the rates are encoded in Extended supported | |
79 | * rates element */ | |
80 | num = 8; | |
81 | } | |
82 | ||
83 | *pos++ = num; | |
84 | for (i = 0, count = 0; i < hapd->iface->num_rates && count < num; | |
85 | i++) { | |
86 | count++; | |
87 | *pos = hapd->iface->current_rates[i].rate / 5; | |
88 | if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC) | |
89 | *pos |= 0x80; | |
90 | pos++; | |
91 | } | |
92 | ||
93 | if (hapd->iconf->ieee80211n && hapd->iconf->require_ht && count < 8) { | |
94 | count++; | |
95 | *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY; | |
96 | } | |
97 | ||
98 | if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht && count < 8) { | |
99 | count++; | |
100 | *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY; | |
101 | } | |
102 | ||
103 | return pos; | |
104 | } | |
105 | ||
106 | ||
107 | u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid) | |
108 | { | |
109 | u8 *pos = eid; | |
110 | int i, num, count; | |
111 | ||
112 | if (hapd->iface->current_rates == NULL) | |
113 | return eid; | |
114 | ||
115 | num = hapd->iface->num_rates; | |
116 | if (hapd->iconf->ieee80211n && hapd->iconf->require_ht) | |
117 | num++; | |
118 | if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht) | |
119 | num++; | |
120 | if (num <= 8) | |
121 | return eid; | |
122 | num -= 8; | |
123 | ||
124 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
125 | *pos++ = num; | |
126 | for (i = 0, count = 0; i < hapd->iface->num_rates && count < num + 8; | |
127 | i++) { | |
128 | count++; | |
129 | if (count <= 8) | |
130 | continue; /* already in SuppRates IE */ | |
131 | *pos = hapd->iface->current_rates[i].rate / 5; | |
132 | if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC) | |
133 | *pos |= 0x80; | |
134 | pos++; | |
135 | } | |
136 | ||
137 | if (hapd->iconf->ieee80211n && hapd->iconf->require_ht) { | |
138 | count++; | |
139 | if (count > 8) | |
140 | *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY; | |
141 | } | |
142 | ||
143 | if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht) { | |
144 | count++; | |
145 | if (count > 8) | |
146 | *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY; | |
147 | } | |
148 | ||
149 | return pos; | |
150 | } | |
151 | ||
152 | ||
153 | u16 hostapd_own_capab_info(struct hostapd_data *hapd) | |
154 | { | |
155 | int capab = WLAN_CAPABILITY_ESS; | |
156 | int privacy; | |
157 | int dfs; | |
158 | int i; | |
159 | ||
160 | /* Check if any of configured channels require DFS */ | |
161 | dfs = hostapd_is_dfs_required(hapd->iface); | |
162 | if (dfs < 0) { | |
163 | wpa_printf(MSG_WARNING, "Failed to check if DFS is required; ret=%d", | |
164 | dfs); | |
165 | dfs = 0; | |
166 | } | |
167 | ||
168 | if (hapd->iface->num_sta_no_short_preamble == 0 && | |
169 | hapd->iconf->preamble == SHORT_PREAMBLE) | |
170 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
171 | ||
172 | privacy = hapd->conf->ssid.wep.keys_set; | |
173 | ||
174 | if (hapd->conf->ieee802_1x && | |
175 | (hapd->conf->default_wep_key_len || | |
176 | hapd->conf->individual_wep_key_len)) | |
177 | privacy = 1; | |
178 | ||
179 | if (hapd->conf->wpa) | |
180 | privacy = 1; | |
181 | ||
182 | #ifdef CONFIG_HS20 | |
183 | if (hapd->conf->osen) | |
184 | privacy = 1; | |
185 | #endif /* CONFIG_HS20 */ | |
186 | ||
187 | if (privacy) | |
188 | capab |= WLAN_CAPABILITY_PRIVACY; | |
189 | ||
190 | if (hapd->iface->current_mode && | |
191 | hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G && | |
192 | hapd->iface->num_sta_no_short_slot_time == 0) | |
193 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; | |
194 | ||
195 | /* | |
196 | * Currently, Spectrum Management capability bit is set when directly | |
197 | * requested in configuration by spectrum_mgmt_required or when AP is | |
198 | * running on DFS channel. | |
199 | * TODO: Also consider driver support for TPC to set Spectrum Mgmt bit | |
200 | */ | |
201 | if (hapd->iface->current_mode && | |
202 | hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211A && | |
203 | (hapd->iconf->spectrum_mgmt_required || dfs)) | |
204 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; | |
205 | ||
206 | for (i = 0; i < RRM_CAPABILITIES_IE_LEN; i++) { | |
207 | if (hapd->conf->radio_measurements[i]) { | |
208 | capab |= IEEE80211_CAP_RRM; | |
209 | break; | |
210 | } | |
211 | } | |
212 | ||
213 | return capab; | |
214 | } | |
215 | ||
216 | ||
217 | #ifndef CONFIG_NO_RC4 | |
218 | static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta, | |
219 | u16 auth_transaction, const u8 *challenge, | |
220 | int iswep) | |
221 | { | |
222 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
223 | HOSTAPD_LEVEL_DEBUG, | |
224 | "authentication (shared key, transaction %d)", | |
225 | auth_transaction); | |
226 | ||
227 | if (auth_transaction == 1) { | |
228 | if (!sta->challenge) { | |
229 | /* Generate a pseudo-random challenge */ | |
230 | u8 key[8]; | |
231 | ||
232 | sta->challenge = os_zalloc(WLAN_AUTH_CHALLENGE_LEN); | |
233 | if (sta->challenge == NULL) | |
234 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
235 | ||
236 | if (os_get_random(key, sizeof(key)) < 0) { | |
237 | os_free(sta->challenge); | |
238 | sta->challenge = NULL; | |
239 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
240 | } | |
241 | ||
242 | rc4_skip(key, sizeof(key), 0, | |
243 | sta->challenge, WLAN_AUTH_CHALLENGE_LEN); | |
244 | } | |
245 | return 0; | |
246 | } | |
247 | ||
248 | if (auth_transaction != 3) | |
249 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
250 | ||
251 | /* Transaction 3 */ | |
252 | if (!iswep || !sta->challenge || !challenge || | |
253 | os_memcmp_const(sta->challenge, challenge, | |
254 | WLAN_AUTH_CHALLENGE_LEN)) { | |
255 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
256 | HOSTAPD_LEVEL_INFO, | |
257 | "shared key authentication - invalid " | |
258 | "challenge-response"); | |
259 | return WLAN_STATUS_CHALLENGE_FAIL; | |
260 | } | |
261 | ||
262 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
263 | HOSTAPD_LEVEL_DEBUG, | |
264 | "authentication OK (shared key)"); | |
265 | sta->flags |= WLAN_STA_AUTH; | |
266 | wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH); | |
267 | os_free(sta->challenge); | |
268 | sta->challenge = NULL; | |
269 | ||
270 | return 0; | |
271 | } | |
272 | #endif /* CONFIG_NO_RC4 */ | |
273 | ||
274 | ||
275 | static int send_auth_reply(struct hostapd_data *hapd, | |
276 | const u8 *dst, const u8 *bssid, | |
277 | u16 auth_alg, u16 auth_transaction, u16 resp, | |
278 | const u8 *ies, size_t ies_len) | |
279 | { | |
280 | struct ieee80211_mgmt *reply; | |
281 | u8 *buf; | |
282 | size_t rlen; | |
283 | int reply_res = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
284 | ||
285 | rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth) + ies_len; | |
286 | buf = os_zalloc(rlen); | |
287 | if (buf == NULL) | |
288 | return -1; | |
289 | ||
290 | reply = (struct ieee80211_mgmt *) buf; | |
291 | reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, | |
292 | WLAN_FC_STYPE_AUTH); | |
293 | os_memcpy(reply->da, dst, ETH_ALEN); | |
294 | os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN); | |
295 | os_memcpy(reply->bssid, bssid, ETH_ALEN); | |
296 | ||
297 | reply->u.auth.auth_alg = host_to_le16(auth_alg); | |
298 | reply->u.auth.auth_transaction = host_to_le16(auth_transaction); | |
299 | reply->u.auth.status_code = host_to_le16(resp); | |
300 | ||
301 | if (ies && ies_len) | |
302 | os_memcpy(reply->u.auth.variable, ies, ies_len); | |
303 | ||
304 | wpa_printf(MSG_DEBUG, "authentication reply: STA=" MACSTR | |
305 | " auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu)", | |
306 | MAC2STR(dst), auth_alg, auth_transaction, | |
307 | resp, (unsigned long) ies_len); | |
308 | if (hostapd_drv_send_mlme(hapd, reply, rlen, 0) < 0) | |
309 | wpa_printf(MSG_INFO, "send_auth_reply: send failed"); | |
310 | else | |
311 | reply_res = WLAN_STATUS_SUCCESS; | |
312 | ||
313 | os_free(buf); | |
314 | ||
315 | return reply_res; | |
316 | } | |
317 | ||
318 | ||
319 | #ifdef CONFIG_IEEE80211R_AP | |
320 | static void handle_auth_ft_finish(void *ctx, const u8 *dst, const u8 *bssid, | |
321 | u16 auth_transaction, u16 status, | |
322 | const u8 *ies, size_t ies_len) | |
323 | { | |
324 | struct hostapd_data *hapd = ctx; | |
325 | struct sta_info *sta; | |
326 | int reply_res; | |
327 | ||
328 | reply_res = send_auth_reply(hapd, dst, bssid, WLAN_AUTH_FT, | |
329 | auth_transaction, status, ies, ies_len); | |
330 | ||
331 | sta = ap_get_sta(hapd, dst); | |
332 | if (sta == NULL) | |
333 | return; | |
334 | ||
335 | if (sta->added_unassoc && (reply_res != WLAN_STATUS_SUCCESS || | |
336 | status != WLAN_STATUS_SUCCESS)) { | |
337 | hostapd_drv_sta_remove(hapd, sta->addr); | |
338 | sta->added_unassoc = 0; | |
339 | return; | |
340 | } | |
341 | ||
342 | if (status != WLAN_STATUS_SUCCESS) | |
343 | return; | |
344 | ||
345 | hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211, | |
346 | HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)"); | |
347 | sta->flags |= WLAN_STA_AUTH; | |
348 | mlme_authenticate_indication(hapd, sta); | |
349 | } | |
350 | #endif /* CONFIG_IEEE80211R_AP */ | |
351 | ||
352 | ||
353 | #ifdef CONFIG_SAE | |
354 | ||
355 | #define dot11RSNASAESync 5 /* attempts */ | |
356 | ||
357 | ||
358 | static struct wpabuf * auth_build_sae_commit(struct hostapd_data *hapd, | |
359 | struct sta_info *sta, int update) | |
360 | { | |
361 | struct wpabuf *buf; | |
362 | ||
363 | if (hapd->conf->ssid.wpa_passphrase == NULL) { | |
364 | wpa_printf(MSG_DEBUG, "SAE: No password available"); | |
365 | return NULL; | |
366 | } | |
367 | ||
368 | if (update && | |
369 | sae_prepare_commit(hapd->own_addr, sta->addr, | |
370 | (u8 *) hapd->conf->ssid.wpa_passphrase, | |
371 | os_strlen(hapd->conf->ssid.wpa_passphrase), | |
372 | sta->sae) < 0) { | |
373 | wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE"); | |
374 | return NULL; | |
375 | } | |
376 | ||
377 | buf = wpabuf_alloc(SAE_COMMIT_MAX_LEN); | |
378 | if (buf == NULL) | |
379 | return NULL; | |
380 | sae_write_commit(sta->sae, buf, sta->sae->tmp ? | |
381 | sta->sae->tmp->anti_clogging_token : NULL); | |
382 | ||
383 | return buf; | |
384 | } | |
385 | ||
386 | ||
387 | static struct wpabuf * auth_build_sae_confirm(struct hostapd_data *hapd, | |
388 | struct sta_info *sta) | |
389 | { | |
390 | struct wpabuf *buf; | |
391 | ||
392 | buf = wpabuf_alloc(SAE_CONFIRM_MAX_LEN); | |
393 | if (buf == NULL) | |
394 | return NULL; | |
395 | ||
396 | sae_write_confirm(sta->sae, buf); | |
397 | ||
398 | return buf; | |
399 | } | |
400 | ||
401 | ||
402 | static int auth_sae_send_commit(struct hostapd_data *hapd, | |
403 | struct sta_info *sta, | |
404 | const u8 *bssid, int update) | |
405 | { | |
406 | struct wpabuf *data; | |
407 | int reply_res; | |
408 | ||
409 | data = auth_build_sae_commit(hapd, sta, update); | |
410 | if (data == NULL) | |
411 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
412 | ||
413 | reply_res = send_auth_reply(hapd, sta->addr, bssid, WLAN_AUTH_SAE, 1, | |
414 | WLAN_STATUS_SUCCESS, wpabuf_head(data), | |
415 | wpabuf_len(data)); | |
416 | ||
417 | wpabuf_free(data); | |
418 | ||
419 | return reply_res; | |
420 | } | |
421 | ||
422 | ||
423 | static int auth_sae_send_confirm(struct hostapd_data *hapd, | |
424 | struct sta_info *sta, | |
425 | const u8 *bssid) | |
426 | { | |
427 | struct wpabuf *data; | |
428 | int reply_res; | |
429 | ||
430 | data = auth_build_sae_confirm(hapd, sta); | |
431 | if (data == NULL) | |
432 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
433 | ||
434 | reply_res = send_auth_reply(hapd, sta->addr, bssid, WLAN_AUTH_SAE, 2, | |
435 | WLAN_STATUS_SUCCESS, wpabuf_head(data), | |
436 | wpabuf_len(data)); | |
437 | ||
438 | wpabuf_free(data); | |
439 | ||
440 | return reply_res; | |
441 | } | |
442 | ||
443 | ||
444 | static int use_sae_anti_clogging(struct hostapd_data *hapd) | |
445 | { | |
446 | struct sta_info *sta; | |
447 | unsigned int open = 0; | |
448 | ||
449 | if (hapd->conf->sae_anti_clogging_threshold == 0) | |
450 | return 1; | |
451 | ||
452 | for (sta = hapd->sta_list; sta; sta = sta->next) { | |
453 | if (!sta->sae) | |
454 | continue; | |
455 | if (sta->sae->state != SAE_COMMITTED && | |
456 | sta->sae->state != SAE_CONFIRMED) | |
457 | continue; | |
458 | open++; | |
459 | if (open >= hapd->conf->sae_anti_clogging_threshold) | |
460 | return 1; | |
461 | } | |
462 | ||
463 | return 0; | |
464 | } | |
465 | ||
466 | ||
467 | static int check_sae_token(struct hostapd_data *hapd, const u8 *addr, | |
468 | const u8 *token, size_t token_len) | |
469 | { | |
470 | u8 mac[SHA256_MAC_LEN]; | |
471 | ||
472 | if (token_len != SHA256_MAC_LEN) | |
473 | return -1; | |
474 | if (hmac_sha256(hapd->sae_token_key, sizeof(hapd->sae_token_key), | |
475 | addr, ETH_ALEN, mac) < 0 || | |
476 | os_memcmp_const(token, mac, SHA256_MAC_LEN) != 0) | |
477 | return -1; | |
478 | ||
479 | return 0; | |
480 | } | |
481 | ||
482 | ||
483 | static struct wpabuf * auth_build_token_req(struct hostapd_data *hapd, | |
484 | int group, const u8 *addr) | |
485 | { | |
486 | struct wpabuf *buf; | |
487 | u8 *token; | |
488 | struct os_reltime now; | |
489 | ||
490 | os_get_reltime(&now); | |
491 | if (!os_reltime_initialized(&hapd->last_sae_token_key_update) || | |
492 | os_reltime_expired(&now, &hapd->last_sae_token_key_update, 60)) { | |
493 | if (random_get_bytes(hapd->sae_token_key, | |
494 | sizeof(hapd->sae_token_key)) < 0) | |
495 | return NULL; | |
496 | wpa_hexdump(MSG_DEBUG, "SAE: Updated token key", | |
497 | hapd->sae_token_key, sizeof(hapd->sae_token_key)); | |
498 | hapd->last_sae_token_key_update = now; | |
499 | } | |
500 | ||
501 | buf = wpabuf_alloc(sizeof(le16) + SHA256_MAC_LEN); | |
502 | if (buf == NULL) | |
503 | return NULL; | |
504 | ||
505 | wpabuf_put_le16(buf, group); /* Finite Cyclic Group */ | |
506 | ||
507 | token = wpabuf_put(buf, SHA256_MAC_LEN); | |
508 | hmac_sha256(hapd->sae_token_key, sizeof(hapd->sae_token_key), | |
509 | addr, ETH_ALEN, token); | |
510 | ||
511 | return buf; | |
512 | } | |
513 | ||
514 | ||
515 | static int sae_check_big_sync(struct sta_info *sta) | |
516 | { | |
517 | if (sta->sae->sync > dot11RSNASAESync) { | |
518 | sta->sae->state = SAE_NOTHING; | |
519 | sta->sae->sync = 0; | |
520 | return -1; | |
521 | } | |
522 | return 0; | |
523 | } | |
524 | ||
525 | ||
526 | static void auth_sae_retransmit_timer(void *eloop_ctx, void *eloop_data) | |
527 | { | |
528 | struct hostapd_data *hapd = eloop_ctx; | |
529 | struct sta_info *sta = eloop_data; | |
530 | int ret; | |
531 | ||
532 | if (sae_check_big_sync(sta)) | |
533 | return; | |
534 | sta->sae->sync++; | |
535 | wpa_printf(MSG_DEBUG, "SAE: Auth SAE retransmit timer for " MACSTR | |
536 | " (sync=%d state=%d)", | |
537 | MAC2STR(sta->addr), sta->sae->sync, sta->sae->state); | |
538 | ||
539 | switch (sta->sae->state) { | |
540 | case SAE_COMMITTED: | |
541 | ret = auth_sae_send_commit(hapd, sta, hapd->own_addr, 0); | |
542 | eloop_register_timeout(0, | |
543 | hapd->dot11RSNASAERetransPeriod * 1000, | |
544 | auth_sae_retransmit_timer, hapd, sta); | |
545 | break; | |
546 | case SAE_CONFIRMED: | |
547 | ret = auth_sae_send_confirm(hapd, sta, hapd->own_addr); | |
548 | eloop_register_timeout(0, | |
549 | hapd->dot11RSNASAERetransPeriod * 1000, | |
550 | auth_sae_retransmit_timer, hapd, sta); | |
551 | break; | |
552 | default: | |
553 | ret = -1; | |
554 | break; | |
555 | } | |
556 | ||
557 | if (ret != WLAN_STATUS_SUCCESS) | |
558 | wpa_printf(MSG_INFO, "SAE: Failed to retransmit: ret=%d", ret); | |
559 | } | |
560 | ||
561 | ||
562 | void sae_clear_retransmit_timer(struct hostapd_data *hapd, struct sta_info *sta) | |
563 | { | |
564 | eloop_cancel_timeout(auth_sae_retransmit_timer, hapd, sta); | |
565 | } | |
566 | ||
567 | ||
568 | static void sae_set_retransmit_timer(struct hostapd_data *hapd, | |
569 | struct sta_info *sta) | |
570 | { | |
571 | if (!(hapd->conf->mesh & MESH_ENABLED)) | |
572 | return; | |
573 | ||
574 | eloop_cancel_timeout(auth_sae_retransmit_timer, hapd, sta); | |
575 | eloop_register_timeout(0, hapd->dot11RSNASAERetransPeriod * 1000, | |
576 | auth_sae_retransmit_timer, hapd, sta); | |
577 | } | |
578 | ||
579 | ||
580 | void sae_accept_sta(struct hostapd_data *hapd, struct sta_info *sta) | |
581 | { | |
582 | sta->flags |= WLAN_STA_AUTH; | |
583 | sta->auth_alg = WLAN_AUTH_SAE; | |
584 | mlme_authenticate_indication(hapd, sta); | |
585 | wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH); | |
586 | sta->sae->state = SAE_ACCEPTED; | |
587 | wpa_auth_pmksa_add_sae(hapd->wpa_auth, sta->addr, | |
588 | sta->sae->pmk, sta->sae->pmkid); | |
589 | } | |
590 | ||
591 | ||
592 | static int sae_sm_step(struct hostapd_data *hapd, struct sta_info *sta, | |
593 | const u8 *bssid, u8 auth_transaction) | |
594 | { | |
595 | int ret; | |
596 | ||
597 | if (auth_transaction != 1 && auth_transaction != 2) | |
598 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
599 | ||
600 | switch (sta->sae->state) { | |
601 | case SAE_NOTHING: | |
602 | if (auth_transaction == 1) { | |
603 | ret = auth_sae_send_commit(hapd, sta, bssid, 1); | |
604 | if (ret) | |
605 | return ret; | |
606 | sta->sae->state = SAE_COMMITTED; | |
607 | ||
608 | if (sae_process_commit(sta->sae) < 0) | |
609 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
610 | ||
611 | /* | |
612 | * In mesh case, both Commit and Confirm can be sent | |
613 | * immediately. In infrastructure BSS, only a single | |
614 | * Authentication frame (Commit) is expected from the AP | |
615 | * here and the second one (Confirm) will be sent once | |
616 | * the STA has sent its second Authentication frame | |
617 | * (Confirm). | |
618 | */ | |
619 | if (hapd->conf->mesh & MESH_ENABLED) { | |
620 | /* | |
621 | * Send both Commit and Confirm immediately | |
622 | * based on SAE finite state machine | |
623 | * Nothing -> Confirm transition. | |
624 | */ | |
625 | ret = auth_sae_send_confirm(hapd, sta, bssid); | |
626 | if (ret) | |
627 | return ret; | |
628 | sta->sae->state = SAE_CONFIRMED; | |
629 | } else { | |
630 | /* | |
631 | * For infrastructure BSS, send only the Commit | |
632 | * message now to get alternating sequence of | |
633 | * Authentication frames between the AP and STA. | |
634 | * Confirm will be sent in | |
635 | * Committed -> Confirmed/Accepted transition | |
636 | * when receiving Confirm from STA. | |
637 | */ | |
638 | } | |
639 | sta->sae->sync = 0; | |
640 | sae_set_retransmit_timer(hapd, sta); | |
641 | } else { | |
642 | hostapd_logger(hapd, sta->addr, | |
643 | HOSTAPD_MODULE_IEEE80211, | |
644 | HOSTAPD_LEVEL_DEBUG, | |
645 | "SAE confirm before commit"); | |
646 | } | |
647 | break; | |
648 | case SAE_COMMITTED: | |
649 | sae_clear_retransmit_timer(hapd, sta); | |
650 | if (auth_transaction == 1) { | |
651 | if (sae_process_commit(sta->sae) < 0) | |
652 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
653 | ||
654 | ret = auth_sae_send_confirm(hapd, sta, bssid); | |
655 | if (ret) | |
656 | return ret; | |
657 | sta->sae->state = SAE_CONFIRMED; | |
658 | sta->sae->sync = 0; | |
659 | sae_set_retransmit_timer(hapd, sta); | |
660 | } else if (hapd->conf->mesh & MESH_ENABLED) { | |
661 | /* | |
662 | * In mesh case, follow SAE finite state machine and | |
663 | * send Commit now, if sync count allows. | |
664 | */ | |
665 | if (sae_check_big_sync(sta)) | |
666 | return WLAN_STATUS_SUCCESS; | |
667 | sta->sae->sync++; | |
668 | ||
669 | ret = auth_sae_send_commit(hapd, sta, bssid, 0); | |
670 | if (ret) | |
671 | return ret; | |
672 | ||
673 | sae_set_retransmit_timer(hapd, sta); | |
674 | } else { | |
675 | /* | |
676 | * For instructure BSS, send the postponed Confirm from | |
677 | * Nothing -> Confirmed transition that was reduced to | |
678 | * Nothing -> Committed above. | |
679 | */ | |
680 | ret = auth_sae_send_confirm(hapd, sta, bssid); | |
681 | if (ret) | |
682 | return ret; | |
683 | ||
684 | sta->sae->state = SAE_CONFIRMED; | |
685 | ||
686 | /* | |
687 | * Since this was triggered on Confirm RX, run another | |
688 | * step to get to Accepted without waiting for | |
689 | * additional events. | |
690 | */ | |
691 | return sae_sm_step(hapd, sta, bssid, auth_transaction); | |
692 | } | |
693 | break; | |
694 | case SAE_CONFIRMED: | |
695 | sae_clear_retransmit_timer(hapd, sta); | |
696 | if (auth_transaction == 1) { | |
697 | if (sae_check_big_sync(sta)) | |
698 | return WLAN_STATUS_SUCCESS; | |
699 | sta->sae->sync++; | |
700 | ||
701 | ret = auth_sae_send_commit(hapd, sta, bssid, 1); | |
702 | if (ret) | |
703 | return ret; | |
704 | ||
705 | if (sae_process_commit(sta->sae) < 0) | |
706 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
707 | ||
708 | ret = auth_sae_send_confirm(hapd, sta, bssid); | |
709 | if (ret) | |
710 | return ret; | |
711 | ||
712 | sae_set_retransmit_timer(hapd, sta); | |
713 | } else { | |
714 | sae_accept_sta(hapd, sta); | |
715 | } | |
716 | break; | |
717 | case SAE_ACCEPTED: | |
718 | if (auth_transaction == 1) { | |
719 | wpa_printf(MSG_DEBUG, "SAE: remove the STA (" MACSTR | |
720 | ") doing reauthentication", | |
721 | MAC2STR(sta->addr)); | |
722 | ap_free_sta(hapd, sta); | |
723 | wpa_auth_pmksa_remove(hapd->wpa_auth, sta->addr); | |
724 | } else { | |
725 | if (sae_check_big_sync(sta)) | |
726 | return WLAN_STATUS_SUCCESS; | |
727 | sta->sae->sync++; | |
728 | ||
729 | ret = auth_sae_send_confirm(hapd, sta, bssid); | |
730 | sae_clear_temp_data(sta->sae); | |
731 | if (ret) | |
732 | return ret; | |
733 | } | |
734 | break; | |
735 | default: | |
736 | wpa_printf(MSG_ERROR, "SAE: invalid state %d", | |
737 | sta->sae->state); | |
738 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
739 | } | |
740 | return WLAN_STATUS_SUCCESS; | |
741 | } | |
742 | ||
743 | ||
744 | static void sae_pick_next_group(struct hostapd_data *hapd, struct sta_info *sta) | |
745 | { | |
746 | struct sae_data *sae = sta->sae; | |
747 | int i, *groups = hapd->conf->sae_groups; | |
748 | ||
749 | if (sae->state != SAE_COMMITTED) | |
750 | return; | |
751 | ||
752 | wpa_printf(MSG_DEBUG, "SAE: Previously selected group: %d", sae->group); | |
753 | ||
754 | for (i = 0; groups && groups[i] > 0; i++) { | |
755 | if (sae->group == groups[i]) | |
756 | break; | |
757 | } | |
758 | ||
759 | if (!groups || groups[i] <= 0) { | |
760 | wpa_printf(MSG_DEBUG, | |
761 | "SAE: Previously selected group not found from the current configuration"); | |
762 | return; | |
763 | } | |
764 | ||
765 | for (;;) { | |
766 | i++; | |
767 | if (groups[i] <= 0) { | |
768 | wpa_printf(MSG_DEBUG, | |
769 | "SAE: No alternative group enabled"); | |
770 | return; | |
771 | } | |
772 | ||
773 | if (sae_set_group(sae, groups[i]) < 0) | |
774 | continue; | |
775 | ||
776 | break; | |
777 | } | |
778 | wpa_printf(MSG_DEBUG, "SAE: Selected new group: %d", groups[i]); | |
779 | } | |
780 | ||
781 | ||
782 | static void handle_auth_sae(struct hostapd_data *hapd, struct sta_info *sta, | |
783 | const struct ieee80211_mgmt *mgmt, size_t len, | |
784 | u16 auth_transaction, u16 status_code) | |
785 | { | |
786 | int resp = WLAN_STATUS_SUCCESS; | |
787 | struct wpabuf *data = NULL; | |
788 | ||
789 | #ifdef CONFIG_TESTING_OPTIONS | |
790 | if (hapd->conf->sae_reflection_attack && auth_transaction == 1) { | |
791 | const u8 *pos, *end; | |
792 | ||
793 | wpa_printf(MSG_DEBUG, "SAE: TESTING - reflection attack"); | |
794 | pos = mgmt->u.auth.variable; | |
795 | end = ((const u8 *) mgmt) + len; | |
796 | send_auth_reply(hapd, mgmt->sa, mgmt->bssid, WLAN_AUTH_SAE, | |
797 | auth_transaction, resp, pos, end - pos); | |
798 | goto remove_sta; | |
799 | } | |
800 | ||
801 | if (hapd->conf->sae_commit_override && auth_transaction == 1) { | |
802 | wpa_printf(MSG_DEBUG, "SAE: TESTING - commit override"); | |
803 | send_auth_reply(hapd, mgmt->sa, mgmt->bssid, WLAN_AUTH_SAE, | |
804 | auth_transaction, resp, | |
805 | wpabuf_head(hapd->conf->sae_commit_override), | |
806 | wpabuf_len(hapd->conf->sae_commit_override)); | |
807 | goto remove_sta; | |
808 | } | |
809 | #endif /* CONFIG_TESTING_OPTIONS */ | |
810 | if (!sta->sae) { | |
811 | if (auth_transaction != 1 || | |
812 | status_code != WLAN_STATUS_SUCCESS) { | |
813 | resp = -1; | |
814 | goto remove_sta; | |
815 | } | |
816 | sta->sae = os_zalloc(sizeof(*sta->sae)); | |
817 | if (!sta->sae) { | |
818 | resp = -1; | |
819 | goto remove_sta; | |
820 | } | |
821 | sta->sae->state = SAE_NOTHING; | |
822 | sta->sae->sync = 0; | |
823 | } | |
824 | ||
825 | if (sta->mesh_sae_pmksa_caching) { | |
826 | wpa_printf(MSG_DEBUG, | |
827 | "SAE: Cancel use of mesh PMKSA caching because peer starts SAE authentication"); | |
828 | wpa_auth_pmksa_remove(hapd->wpa_auth, sta->addr); | |
829 | sta->mesh_sae_pmksa_caching = 0; | |
830 | } | |
831 | ||
832 | if (auth_transaction == 1) { | |
833 | const u8 *token = NULL, *pos, *end; | |
834 | size_t token_len = 0; | |
835 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
836 | HOSTAPD_LEVEL_DEBUG, | |
837 | "start SAE authentication (RX commit, status=%u)", | |
838 | status_code); | |
839 | ||
840 | if ((hapd->conf->mesh & MESH_ENABLED) && | |
841 | status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ && | |
842 | sta->sae->tmp) { | |
843 | pos = mgmt->u.auth.variable; | |
844 | end = ((const u8 *) mgmt) + len; | |
845 | if (pos + sizeof(le16) > end) { | |
846 | wpa_printf(MSG_ERROR, | |
847 | "SAE: Too short anti-clogging token request"); | |
848 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
849 | goto reply; | |
850 | } | |
851 | resp = sae_group_allowed(sta->sae, | |
852 | hapd->conf->sae_groups, | |
853 | WPA_GET_LE16(pos)); | |
854 | if (resp != WLAN_STATUS_SUCCESS) { | |
855 | wpa_printf(MSG_ERROR, | |
856 | "SAE: Invalid group in anti-clogging token request"); | |
857 | goto reply; | |
858 | } | |
859 | pos += sizeof(le16); | |
860 | ||
861 | wpabuf_free(sta->sae->tmp->anti_clogging_token); | |
862 | sta->sae->tmp->anti_clogging_token = | |
863 | wpabuf_alloc_copy(pos, end - pos); | |
864 | if (sta->sae->tmp->anti_clogging_token == NULL) { | |
865 | wpa_printf(MSG_ERROR, | |
866 | "SAE: Failed to alloc for anti-clogging token"); | |
867 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
868 | goto remove_sta; | |
869 | } | |
870 | ||
871 | /* | |
872 | * IEEE Std 802.11-2012, 11.3.8.6.4: If the Status code | |
873 | * is 76, a new Commit Message shall be constructed | |
874 | * with the Anti-Clogging Token from the received | |
875 | * Authentication frame, and the commit-scalar and | |
876 | * COMMIT-ELEMENT previously sent. | |
877 | */ | |
878 | resp = auth_sae_send_commit(hapd, sta, mgmt->bssid, 0); | |
879 | if (resp != WLAN_STATUS_SUCCESS) { | |
880 | wpa_printf(MSG_ERROR, | |
881 | "SAE: Failed to send commit message"); | |
882 | goto remove_sta; | |
883 | } | |
884 | sta->sae->state = SAE_COMMITTED; | |
885 | sta->sae->sync = 0; | |
886 | sae_set_retransmit_timer(hapd, sta); | |
887 | return; | |
888 | } | |
889 | ||
890 | if ((hapd->conf->mesh & MESH_ENABLED) && | |
891 | status_code == | |
892 | WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED && | |
893 | sta->sae->tmp) { | |
894 | wpa_printf(MSG_DEBUG, | |
895 | "SAE: Peer did not accept our SAE group"); | |
896 | sae_pick_next_group(hapd, sta); | |
897 | goto remove_sta; | |
898 | } | |
899 | ||
900 | if (status_code != WLAN_STATUS_SUCCESS) | |
901 | goto remove_sta; | |
902 | ||
903 | resp = sae_parse_commit(sta->sae, mgmt->u.auth.variable, | |
904 | ((const u8 *) mgmt) + len - | |
905 | mgmt->u.auth.variable, &token, | |
906 | &token_len, hapd->conf->sae_groups); | |
907 | if (resp == SAE_SILENTLY_DISCARD) { | |
908 | wpa_printf(MSG_DEBUG, | |
909 | "SAE: Drop commit message from " MACSTR " due to reflection attack", | |
910 | MAC2STR(sta->addr)); | |
911 | goto remove_sta; | |
912 | } | |
913 | if (token && check_sae_token(hapd, sta->addr, token, token_len) | |
914 | < 0) { | |
915 | wpa_printf(MSG_DEBUG, "SAE: Drop commit message with " | |
916 | "incorrect token from " MACSTR, | |
917 | MAC2STR(sta->addr)); | |
918 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
919 | goto remove_sta; | |
920 | } | |
921 | ||
922 | if (resp != WLAN_STATUS_SUCCESS) | |
923 | goto reply; | |
924 | ||
925 | if (!token && use_sae_anti_clogging(hapd)) { | |
926 | wpa_printf(MSG_DEBUG, | |
927 | "SAE: Request anti-clogging token from " | |
928 | MACSTR, MAC2STR(sta->addr)); | |
929 | data = auth_build_token_req(hapd, sta->sae->group, | |
930 | sta->addr); | |
931 | resp = WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ; | |
932 | if (hapd->conf->mesh & MESH_ENABLED) | |
933 | sta->sae->state = SAE_NOTHING; | |
934 | goto reply; | |
935 | } | |
936 | ||
937 | resp = sae_sm_step(hapd, sta, mgmt->bssid, auth_transaction); | |
938 | } else if (auth_transaction == 2) { | |
939 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
940 | HOSTAPD_LEVEL_DEBUG, | |
941 | "SAE authentication (RX confirm, status=%u)", | |
942 | status_code); | |
943 | if (status_code != WLAN_STATUS_SUCCESS) | |
944 | goto remove_sta; | |
945 | if (sta->sae->state >= SAE_CONFIRMED || | |
946 | !(hapd->conf->mesh & MESH_ENABLED)) { | |
947 | if (sae_check_confirm(sta->sae, mgmt->u.auth.variable, | |
948 | ((u8 *) mgmt) + len - | |
949 | mgmt->u.auth.variable) < 0) { | |
950 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
951 | goto reply; | |
952 | } | |
953 | } | |
954 | resp = sae_sm_step(hapd, sta, mgmt->bssid, auth_transaction); | |
955 | } else { | |
956 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
957 | HOSTAPD_LEVEL_DEBUG, | |
958 | "unexpected SAE authentication transaction %u (status=%u)", | |
959 | auth_transaction, status_code); | |
960 | if (status_code != WLAN_STATUS_SUCCESS) | |
961 | goto remove_sta; | |
962 | resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION; | |
963 | } | |
964 | ||
965 | reply: | |
966 | if (resp != WLAN_STATUS_SUCCESS) { | |
967 | send_auth_reply(hapd, mgmt->sa, mgmt->bssid, WLAN_AUTH_SAE, | |
968 | auth_transaction, resp, | |
969 | data ? wpabuf_head(data) : (u8 *) "", | |
970 | data ? wpabuf_len(data) : 0); | |
971 | } | |
972 | ||
973 | remove_sta: | |
974 | if (sta->added_unassoc && (resp != WLAN_STATUS_SUCCESS || | |
975 | status_code != WLAN_STATUS_SUCCESS)) { | |
976 | hostapd_drv_sta_remove(hapd, sta->addr); | |
977 | sta->added_unassoc = 0; | |
978 | } | |
979 | wpabuf_free(data); | |
980 | } | |
981 | ||
982 | ||
983 | /** | |
984 | * auth_sae_init_committed - Send COMMIT and start SAE in committed state | |
985 | * @hapd: BSS data for the device initiating the authentication | |
986 | * @sta: the peer to which commit authentication frame is sent | |
987 | * | |
988 | * This function implements Init event handling (IEEE Std 802.11-2012, | |
989 | * 11.3.8.6.3) in which initial COMMIT message is sent. Prior to calling, the | |
990 | * sta->sae structure should be initialized appropriately via a call to | |
991 | * sae_prepare_commit(). | |
992 | */ | |
993 | int auth_sae_init_committed(struct hostapd_data *hapd, struct sta_info *sta) | |
994 | { | |
995 | int ret; | |
996 | ||
997 | if (!sta->sae || !sta->sae->tmp) | |
998 | return -1; | |
999 | ||
1000 | if (sta->sae->state != SAE_NOTHING) | |
1001 | return -1; | |
1002 | ||
1003 | ret = auth_sae_send_commit(hapd, sta, hapd->own_addr, 0); | |
1004 | if (ret) | |
1005 | return -1; | |
1006 | ||
1007 | sta->sae->state = SAE_COMMITTED; | |
1008 | sta->sae->sync = 0; | |
1009 | sae_set_retransmit_timer(hapd, sta); | |
1010 | ||
1011 | return 0; | |
1012 | } | |
1013 | ||
1014 | #endif /* CONFIG_SAE */ | |
1015 | ||
1016 | ||
1017 | static u16 wpa_res_to_status_code(int res) | |
1018 | { | |
1019 | if (res == WPA_INVALID_GROUP) | |
1020 | return WLAN_STATUS_GROUP_CIPHER_NOT_VALID; | |
1021 | if (res == WPA_INVALID_PAIRWISE) | |
1022 | return WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID; | |
1023 | if (res == WPA_INVALID_AKMP) | |
1024 | return WLAN_STATUS_AKMP_NOT_VALID; | |
1025 | if (res == WPA_ALLOC_FAIL) | |
1026 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1027 | #ifdef CONFIG_IEEE80211W | |
1028 | if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION) | |
1029 | return WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION; | |
1030 | if (res == WPA_INVALID_MGMT_GROUP_CIPHER) | |
1031 | return WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION; | |
1032 | #endif /* CONFIG_IEEE80211W */ | |
1033 | if (res == WPA_INVALID_MDIE) | |
1034 | return WLAN_STATUS_INVALID_MDIE; | |
1035 | if (res == WPA_INVALID_PMKID) | |
1036 | return WLAN_STATUS_INVALID_PMKID; | |
1037 | if (res != WPA_IE_OK) | |
1038 | return WLAN_STATUS_INVALID_IE; | |
1039 | return WLAN_STATUS_SUCCESS; | |
1040 | } | |
1041 | ||
1042 | ||
1043 | #ifdef CONFIG_FILS | |
1044 | ||
1045 | static void handle_auth_fils_finish(struct hostapd_data *hapd, | |
1046 | struct sta_info *sta, u16 resp, | |
1047 | struct wpabuf *data, int pub); | |
1048 | ||
1049 | void handle_auth_fils(struct hostapd_data *hapd, struct sta_info *sta, | |
1050 | const u8 *pos, size_t len, u16 auth_alg, | |
1051 | u16 auth_transaction, u16 status_code, | |
1052 | void (*cb)(struct hostapd_data *hapd, | |
1053 | struct sta_info *sta, u16 resp, | |
1054 | struct wpabuf *data, int pub)) | |
1055 | { | |
1056 | u16 resp = WLAN_STATUS_SUCCESS; | |
1057 | const u8 *end; | |
1058 | struct ieee802_11_elems elems; | |
1059 | int res; | |
1060 | struct wpa_ie_data rsn; | |
1061 | struct rsn_pmksa_cache_entry *pmksa = NULL; | |
1062 | ||
1063 | if (auth_transaction != 1 || status_code != WLAN_STATUS_SUCCESS) | |
1064 | return; | |
1065 | ||
1066 | end = pos + len; | |
1067 | ||
1068 | wpa_hexdump(MSG_DEBUG, "FILS: Authentication frame fields", | |
1069 | pos, end - pos); | |
1070 | ||
1071 | /* TODO: FILS PK */ | |
1072 | #ifdef CONFIG_FILS_SK_PFS | |
1073 | if (auth_alg == WLAN_AUTH_FILS_SK_PFS) { | |
1074 | u16 group; | |
1075 | struct wpabuf *pub; | |
1076 | size_t elem_len; | |
1077 | ||
1078 | /* Using FILS PFS */ | |
1079 | ||
1080 | /* Finite Cyclic Group */ | |
1081 | if (end - pos < 2) { | |
1082 | wpa_printf(MSG_DEBUG, | |
1083 | "FILS: No room for Finite Cyclic Group"); | |
1084 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1085 | goto fail; | |
1086 | } | |
1087 | group = WPA_GET_LE16(pos); | |
1088 | pos += 2; | |
1089 | if (group != hapd->conf->fils_dh_group) { | |
1090 | wpa_printf(MSG_DEBUG, | |
1091 | "FILS: Unsupported Finite Cyclic Group: %u (expected %u)", | |
1092 | group, hapd->conf->fils_dh_group); | |
1093 | resp = WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED; | |
1094 | goto fail; | |
1095 | } | |
1096 | ||
1097 | crypto_ecdh_deinit(sta->fils_ecdh); | |
1098 | sta->fils_ecdh = crypto_ecdh_init(group); | |
1099 | if (!sta->fils_ecdh) { | |
1100 | wpa_printf(MSG_INFO, | |
1101 | "FILS: Could not initialize ECDH with group %d", | |
1102 | group); | |
1103 | resp = WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED; | |
1104 | goto fail; | |
1105 | } | |
1106 | ||
1107 | pub = crypto_ecdh_get_pubkey(sta->fils_ecdh, 1); | |
1108 | if (!pub) { | |
1109 | wpa_printf(MSG_DEBUG, | |
1110 | "FILS: Failed to derive ECDH public key"); | |
1111 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1112 | goto fail; | |
1113 | } | |
1114 | elem_len = wpabuf_len(pub); | |
1115 | wpabuf_free(pub); | |
1116 | ||
1117 | /* Element */ | |
1118 | if ((size_t) (end - pos) < elem_len) { | |
1119 | wpa_printf(MSG_DEBUG, "FILS: No room for Element"); | |
1120 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1121 | goto fail; | |
1122 | } | |
1123 | ||
1124 | wpabuf_free(sta->fils_g_sta); | |
1125 | sta->fils_g_sta = wpabuf_alloc_copy(pos, elem_len); | |
1126 | wpabuf_clear_free(sta->fils_dh_ss); | |
1127 | sta->fils_dh_ss = crypto_ecdh_set_peerkey(sta->fils_ecdh, 1, | |
1128 | pos, elem_len); | |
1129 | if (!sta->fils_dh_ss) { | |
1130 | wpa_printf(MSG_DEBUG, "FILS: ECDH operation failed"); | |
1131 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1132 | goto fail; | |
1133 | } | |
1134 | wpa_hexdump_buf_key(MSG_DEBUG, "FILS: DH_SS", sta->fils_dh_ss); | |
1135 | pos += elem_len; | |
1136 | } else { | |
1137 | crypto_ecdh_deinit(sta->fils_ecdh); | |
1138 | sta->fils_ecdh = NULL; | |
1139 | wpabuf_clear_free(sta->fils_dh_ss); | |
1140 | sta->fils_dh_ss = NULL; | |
1141 | } | |
1142 | #endif /* CONFIG_FILS_SK_PFS */ | |
1143 | ||
1144 | wpa_hexdump(MSG_DEBUG, "FILS: Remaining IEs", pos, end - pos); | |
1145 | if (ieee802_11_parse_elems(pos, end - pos, &elems, 1) == ParseFailed) { | |
1146 | wpa_printf(MSG_DEBUG, "FILS: Could not parse elements"); | |
1147 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1148 | goto fail; | |
1149 | } | |
1150 | ||
1151 | /* RSNE */ | |
1152 | wpa_hexdump(MSG_DEBUG, "FILS: RSN element", | |
1153 | elems.rsn_ie, elems.rsn_ie_len); | |
1154 | if (!elems.rsn_ie || | |
1155 | wpa_parse_wpa_ie_rsn(elems.rsn_ie - 2, elems.rsn_ie_len + 2, | |
1156 | &rsn) < 0) { | |
1157 | wpa_printf(MSG_DEBUG, "FILS: No valid RSN element"); | |
1158 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1159 | goto fail; | |
1160 | } | |
1161 | ||
1162 | if (!sta->wpa_sm) | |
1163 | sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, sta->addr, | |
1164 | NULL); | |
1165 | if (!sta->wpa_sm) { | |
1166 | wpa_printf(MSG_DEBUG, | |
1167 | "FILS: Failed to initialize RSN state machine"); | |
1168 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1169 | goto fail; | |
1170 | } | |
1171 | ||
1172 | res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm, | |
1173 | elems.rsn_ie - 2, elems.rsn_ie_len + 2, | |
1174 | elems.mdie, elems.mdie_len, NULL, 0); | |
1175 | resp = wpa_res_to_status_code(res); | |
1176 | if (resp != WLAN_STATUS_SUCCESS) | |
1177 | goto fail; | |
1178 | ||
1179 | if (!elems.fils_nonce) { | |
1180 | wpa_printf(MSG_DEBUG, "FILS: No FILS Nonce field"); | |
1181 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1182 | goto fail; | |
1183 | } | |
1184 | wpa_hexdump(MSG_DEBUG, "FILS: SNonce", elems.fils_nonce, | |
1185 | FILS_NONCE_LEN); | |
1186 | os_memcpy(sta->fils_snonce, elems.fils_nonce, FILS_NONCE_LEN); | |
1187 | ||
1188 | /* PMKID List */ | |
1189 | if (rsn.pmkid && rsn.num_pmkid > 0) { | |
1190 | u8 num; | |
1191 | const u8 *pmkid; | |
1192 | ||
1193 | wpa_hexdump(MSG_DEBUG, "FILS: PMKID List", | |
1194 | rsn.pmkid, rsn.num_pmkid * PMKID_LEN); | |
1195 | ||
1196 | pmkid = rsn.pmkid; | |
1197 | num = rsn.num_pmkid; | |
1198 | while (num) { | |
1199 | wpa_hexdump(MSG_DEBUG, "FILS: PMKID", pmkid, PMKID_LEN); | |
1200 | pmksa = wpa_auth_pmksa_get(hapd->wpa_auth, sta->addr, | |
1201 | pmkid); | |
1202 | if (pmksa) | |
1203 | break; | |
1204 | pmksa = wpa_auth_pmksa_get_fils_cache_id(hapd->wpa_auth, | |
1205 | sta->addr, | |
1206 | pmkid); | |
1207 | if (pmksa) | |
1208 | break; | |
1209 | pmkid += PMKID_LEN; | |
1210 | num--; | |
1211 | } | |
1212 | } | |
1213 | if (pmksa && wpa_auth_sta_key_mgmt(sta->wpa_sm) != pmksa->akmp) { | |
1214 | wpa_printf(MSG_DEBUG, | |
1215 | "FILS: Matching PMKSA cache entry has different AKMP (0x%x != 0x%x) - ignore", | |
1216 | wpa_auth_sta_key_mgmt(sta->wpa_sm), pmksa->akmp); | |
1217 | pmksa = NULL; | |
1218 | } | |
1219 | if (pmksa) | |
1220 | wpa_printf(MSG_DEBUG, "FILS: Found matching PMKSA cache entry"); | |
1221 | ||
1222 | /* FILS Session */ | |
1223 | if (!elems.fils_session) { | |
1224 | wpa_printf(MSG_DEBUG, "FILS: No FILS Session element"); | |
1225 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1226 | goto fail; | |
1227 | } | |
1228 | wpa_hexdump(MSG_DEBUG, "FILS: FILS Session", elems.fils_session, | |
1229 | FILS_SESSION_LEN); | |
1230 | os_memcpy(sta->fils_session, elems.fils_session, FILS_SESSION_LEN); | |
1231 | ||
1232 | /* FILS Wrapped Data */ | |
1233 | if (elems.fils_wrapped_data) { | |
1234 | wpa_hexdump(MSG_DEBUG, "FILS: Wrapped Data", | |
1235 | elems.fils_wrapped_data, | |
1236 | elems.fils_wrapped_data_len); | |
1237 | if (!pmksa) { | |
1238 | #ifndef CONFIG_NO_RADIUS | |
1239 | if (!sta->eapol_sm) { | |
1240 | sta->eapol_sm = | |
1241 | ieee802_1x_alloc_eapol_sm(hapd, sta); | |
1242 | } | |
1243 | wpa_printf(MSG_DEBUG, | |
1244 | "FILS: Forward EAP-Initiate/Re-auth to authentication server"); | |
1245 | ieee802_1x_encapsulate_radius( | |
1246 | hapd, sta, elems.fils_wrapped_data, | |
1247 | elems.fils_wrapped_data_len); | |
1248 | sta->fils_pending_cb = cb; | |
1249 | wpa_printf(MSG_DEBUG, | |
1250 | "FILS: Will send Authentication frame once the response from authentication server is available"); | |
1251 | sta->flags |= WLAN_STA_PENDING_FILS_ERP; | |
1252 | /* Calculate pending PMKID here so that we do not need | |
1253 | * to maintain a copy of the EAP-Initiate/Reauth | |
1254 | * message. */ | |
1255 | if (fils_pmkid_erp(wpa_auth_sta_key_mgmt(sta->wpa_sm), | |
1256 | elems.fils_wrapped_data, | |
1257 | elems.fils_wrapped_data_len, | |
1258 | sta->fils_erp_pmkid) == 0) | |
1259 | sta->fils_erp_pmkid_set = 1; | |
1260 | return; | |
1261 | #else /* CONFIG_NO_RADIUS */ | |
1262 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1263 | goto fail; | |
1264 | #endif /* CONFIG_NO_RADIUS */ | |
1265 | } | |
1266 | } | |
1267 | ||
1268 | fail: | |
1269 | if (cb) { | |
1270 | struct wpabuf *data; | |
1271 | int pub = 0; | |
1272 | ||
1273 | data = prepare_auth_resp_fils(hapd, sta, &resp, pmksa, NULL, | |
1274 | NULL, 0, &pub); | |
1275 | if (!data) { | |
1276 | wpa_printf(MSG_DEBUG, | |
1277 | "%s: prepare_auth_resp_fils() returned failure", | |
1278 | __func__); | |
1279 | } | |
1280 | ||
1281 | cb(hapd, sta, resp, data, pub); | |
1282 | } | |
1283 | } | |
1284 | ||
1285 | ||
1286 | static struct wpabuf * | |
1287 | prepare_auth_resp_fils(struct hostapd_data *hapd, | |
1288 | struct sta_info *sta, u16 *resp, | |
1289 | struct rsn_pmksa_cache_entry *pmksa, | |
1290 | struct wpabuf *erp_resp, | |
1291 | const u8 *msk, size_t msk_len, | |
1292 | int *is_pub) | |
1293 | { | |
1294 | u8 fils_nonce[FILS_NONCE_LEN]; | |
1295 | size_t ielen; | |
1296 | struct wpabuf *data = NULL; | |
1297 | const u8 *ie; | |
1298 | u8 *ie_buf = NULL; | |
1299 | const u8 *pmk = NULL; | |
1300 | size_t pmk_len = 0; | |
1301 | u8 pmk_buf[PMK_LEN_MAX]; | |
1302 | struct wpabuf *pub = NULL; | |
1303 | ||
1304 | if (*resp != WLAN_STATUS_SUCCESS) | |
1305 | goto fail; | |
1306 | ||
1307 | ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &ielen); | |
1308 | if (!ie) { | |
1309 | *resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1310 | goto fail; | |
1311 | } | |
1312 | ||
1313 | if (pmksa) { | |
1314 | /* Add PMKID of the selected PMKSA into RSNE */ | |
1315 | ie_buf = os_malloc(ielen + 2 + 2 + PMKID_LEN); | |
1316 | if (!ie_buf) { | |
1317 | *resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1318 | goto fail; | |
1319 | } | |
1320 | ||
1321 | os_memcpy(ie_buf, ie, ielen); | |
1322 | if (wpa_insert_pmkid(ie_buf, &ielen, pmksa->pmkid) < 0) { | |
1323 | *resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1324 | goto fail; | |
1325 | } | |
1326 | ie = ie_buf; | |
1327 | } | |
1328 | ||
1329 | if (random_get_bytes(fils_nonce, FILS_NONCE_LEN) < 0) { | |
1330 | *resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1331 | goto fail; | |
1332 | } | |
1333 | wpa_hexdump(MSG_DEBUG, "RSN: Generated FILS Nonce", | |
1334 | fils_nonce, FILS_NONCE_LEN); | |
1335 | ||
1336 | #ifdef CONFIG_FILS_SK_PFS | |
1337 | if (sta->fils_dh_ss && sta->fils_ecdh) { | |
1338 | pub = crypto_ecdh_get_pubkey(sta->fils_ecdh, 1); | |
1339 | if (!pub) { | |
1340 | *resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1341 | goto fail; | |
1342 | } | |
1343 | } | |
1344 | #endif /* CONFIG_FILS_SK_PFS */ | |
1345 | ||
1346 | data = wpabuf_alloc(1000 + ielen + (pub ? wpabuf_len(pub) : 0)); | |
1347 | if (!data) { | |
1348 | *resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1349 | goto fail; | |
1350 | } | |
1351 | ||
1352 | /* TODO: FILS PK */ | |
1353 | #ifdef CONFIG_FILS_SK_PFS | |
1354 | if (pub) { | |
1355 | /* Finite Cyclic Group */ | |
1356 | wpabuf_put_le16(data, hapd->conf->fils_dh_group); | |
1357 | ||
1358 | /* Element */ | |
1359 | wpabuf_put_buf(data, pub); | |
1360 | } | |
1361 | #endif /* CONFIG_FILS_SK_PFS */ | |
1362 | ||
1363 | /* RSNE */ | |
1364 | wpabuf_put_data(data, ie, ielen); | |
1365 | ||
1366 | /* MDE when using FILS+FT (already included in ie,ielen with RSNE) */ | |
1367 | ||
1368 | #ifdef CONFIG_IEEE80211R_AP | |
1369 | if (wpa_key_mgmt_ft(wpa_auth_sta_key_mgmt(sta->wpa_sm))) { | |
1370 | /* FTE[R1KH-ID,R0KH-ID] when using FILS+FT */ | |
1371 | int res; | |
1372 | ||
1373 | res = wpa_auth_write_fte(hapd->wpa_auth, wpabuf_put(data, 0), | |
1374 | wpabuf_tailroom(data)); | |
1375 | if (res < 0) { | |
1376 | *resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1377 | goto fail; | |
1378 | } | |
1379 | wpabuf_put(data, res); | |
1380 | } | |
1381 | #endif /* CONFIG_IEEE80211R_AP */ | |
1382 | ||
1383 | /* FILS Nonce */ | |
1384 | wpabuf_put_u8(data, WLAN_EID_EXTENSION); /* Element ID */ | |
1385 | wpabuf_put_u8(data, 1 + FILS_NONCE_LEN); /* Length */ | |
1386 | /* Element ID Extension */ | |
1387 | wpabuf_put_u8(data, WLAN_EID_EXT_FILS_NONCE); | |
1388 | wpabuf_put_data(data, fils_nonce, FILS_NONCE_LEN); | |
1389 | ||
1390 | /* FILS Session */ | |
1391 | wpabuf_put_u8(data, WLAN_EID_EXTENSION); /* Element ID */ | |
1392 | wpabuf_put_u8(data, 1 + FILS_SESSION_LEN); /* Length */ | |
1393 | /* Element ID Extension */ | |
1394 | wpabuf_put_u8(data, WLAN_EID_EXT_FILS_SESSION); | |
1395 | wpabuf_put_data(data, sta->fils_session, FILS_SESSION_LEN); | |
1396 | ||
1397 | /* FILS Wrapped Data */ | |
1398 | if (!pmksa && erp_resp) { | |
1399 | wpabuf_put_u8(data, WLAN_EID_EXTENSION); /* Element ID */ | |
1400 | wpabuf_put_u8(data, 1 + wpabuf_len(erp_resp)); /* Length */ | |
1401 | /* Element ID Extension */ | |
1402 | wpabuf_put_u8(data, WLAN_EID_EXT_FILS_WRAPPED_DATA); | |
1403 | wpabuf_put_buf(data, erp_resp); | |
1404 | ||
1405 | if (fils_rmsk_to_pmk(wpa_auth_sta_key_mgmt(sta->wpa_sm), | |
1406 | msk, msk_len, sta->fils_snonce, fils_nonce, | |
1407 | sta->fils_dh_ss ? | |
1408 | wpabuf_head(sta->fils_dh_ss) : NULL, | |
1409 | sta->fils_dh_ss ? | |
1410 | wpabuf_len(sta->fils_dh_ss) : 0, | |
1411 | pmk_buf, &pmk_len)) { | |
1412 | wpa_printf(MSG_DEBUG, "FILS: Failed to derive PMK"); | |
1413 | *resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1414 | wpabuf_free(data); | |
1415 | data = NULL; | |
1416 | goto fail; | |
1417 | } | |
1418 | pmk = pmk_buf; | |
1419 | ||
1420 | if (sta->fils_erp_pmkid_set) { | |
1421 | /* TODO: get PMKLifetime from WPA parameters */ | |
1422 | unsigned int dot11RSNAConfigPMKLifetime = 43200; | |
1423 | ||
1424 | sta->fils_erp_pmkid_set = 0; | |
1425 | if (wpa_auth_pmksa_add2( | |
1426 | hapd->wpa_auth, sta->addr, | |
1427 | pmk, pmk_len, | |
1428 | sta->fils_erp_pmkid, | |
1429 | sta->session_timeout_set ? | |
1430 | sta->session_timeout : | |
1431 | dot11RSNAConfigPMKLifetime, | |
1432 | wpa_auth_sta_key_mgmt(sta->wpa_sm)) < 0) { | |
1433 | wpa_printf(MSG_ERROR, | |
1434 | "FILS: Failed to add PMKSA cache entry based on ERP"); | |
1435 | } | |
1436 | } | |
1437 | } else if (pmksa) { | |
1438 | pmk = pmksa->pmk; | |
1439 | pmk_len = pmksa->pmk_len; | |
1440 | } | |
1441 | ||
1442 | if (!pmk) { | |
1443 | wpa_printf(MSG_DEBUG, "FILS: No PMK available"); | |
1444 | *resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1445 | wpabuf_free(data); | |
1446 | data = NULL; | |
1447 | goto fail; | |
1448 | } | |
1449 | ||
1450 | if (fils_auth_pmk_to_ptk(sta->wpa_sm, pmk, pmk_len, | |
1451 | sta->fils_snonce, fils_nonce, | |
1452 | sta->fils_g_sta, pub) < 0) { | |
1453 | *resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1454 | wpabuf_free(data); | |
1455 | data = NULL; | |
1456 | goto fail; | |
1457 | } | |
1458 | ||
1459 | fail: | |
1460 | if (is_pub) | |
1461 | *is_pub = pub != NULL; | |
1462 | os_free(ie_buf); | |
1463 | wpabuf_free(pub); | |
1464 | wpabuf_clear_free(sta->fils_dh_ss); | |
1465 | sta->fils_dh_ss = NULL; | |
1466 | #ifdef CONFIG_FILS_SK_PFS | |
1467 | crypto_ecdh_deinit(sta->fils_ecdh); | |
1468 | sta->fils_ecdh = NULL; | |
1469 | #endif /* CONFIG_FILS_SK_PFS */ | |
1470 | return data; | |
1471 | } | |
1472 | ||
1473 | ||
1474 | static void handle_auth_fils_finish(struct hostapd_data *hapd, | |
1475 | struct sta_info *sta, u16 resp, | |
1476 | struct wpabuf *data, int pub) | |
1477 | { | |
1478 | u16 auth_alg; | |
1479 | ||
1480 | auth_alg = (pub || | |
1481 | resp == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED) ? | |
1482 | WLAN_AUTH_FILS_SK_PFS : WLAN_AUTH_FILS_SK; | |
1483 | send_auth_reply(hapd, sta->addr, hapd->own_addr, auth_alg, 2, resp, | |
1484 | data ? wpabuf_head(data) : (u8 *) "", | |
1485 | data ? wpabuf_len(data) : 0); | |
1486 | wpabuf_free(data); | |
1487 | ||
1488 | if (resp == WLAN_STATUS_SUCCESS) { | |
1489 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
1490 | HOSTAPD_LEVEL_DEBUG, | |
1491 | "authentication OK (FILS)"); | |
1492 | sta->flags |= WLAN_STA_AUTH; | |
1493 | wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH); | |
1494 | sta->auth_alg = pub ? WLAN_AUTH_FILS_SK_PFS : WLAN_AUTH_FILS_SK; | |
1495 | mlme_authenticate_indication(hapd, sta); | |
1496 | } | |
1497 | } | |
1498 | ||
1499 | ||
1500 | void ieee802_11_finish_fils_auth(struct hostapd_data *hapd, | |
1501 | struct sta_info *sta, int success, | |
1502 | struct wpabuf *erp_resp, | |
1503 | const u8 *msk, size_t msk_len) | |
1504 | { | |
1505 | struct wpabuf *data; | |
1506 | int pub = 0; | |
1507 | u16 resp; | |
1508 | ||
1509 | sta->flags &= ~WLAN_STA_PENDING_FILS_ERP; | |
1510 | ||
1511 | if (!sta->fils_pending_cb) | |
1512 | return; | |
1513 | resp = success ? WLAN_STATUS_SUCCESS : WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1514 | data = prepare_auth_resp_fils(hapd, sta, &resp, NULL, erp_resp, | |
1515 | msk, msk_len, &pub); | |
1516 | if (!data) { | |
1517 | wpa_printf(MSG_DEBUG, | |
1518 | "%s: prepare_auth_resp_fils() returned failure", | |
1519 | __func__); | |
1520 | } | |
1521 | sta->fils_pending_cb(hapd, sta, resp, data, pub); | |
1522 | } | |
1523 | ||
1524 | #endif /* CONFIG_FILS */ | |
1525 | ||
1526 | ||
1527 | static int | |
1528 | ieee802_11_allowed_address(struct hostapd_data *hapd, const u8 *addr, | |
1529 | const u8 *msg, size_t len, u32 *session_timeout, | |
1530 | u32 *acct_interim_interval, | |
1531 | struct vlan_description *vlan_id, | |
1532 | struct hostapd_sta_wpa_psk_short **psk, | |
1533 | char **identity, char **radius_cui) | |
1534 | { | |
1535 | int res; | |
1536 | ||
1537 | os_memset(vlan_id, 0, sizeof(*vlan_id)); | |
1538 | res = hostapd_allowed_address(hapd, addr, msg, len, | |
1539 | session_timeout, acct_interim_interval, | |
1540 | vlan_id, psk, identity, radius_cui); | |
1541 | ||
1542 | if (res == HOSTAPD_ACL_REJECT) { | |
1543 | wpa_printf(MSG_INFO, | |
1544 | "Station " MACSTR " not allowed to authenticate", | |
1545 | MAC2STR(addr)); | |
1546 | return HOSTAPD_ACL_REJECT; | |
1547 | } | |
1548 | ||
1549 | if (res == HOSTAPD_ACL_PENDING) { | |
1550 | wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR | |
1551 | " waiting for an external authentication", | |
1552 | MAC2STR(addr)); | |
1553 | /* Authentication code will re-send the authentication frame | |
1554 | * after it has received (and cached) information from the | |
1555 | * external source. */ | |
1556 | return HOSTAPD_ACL_PENDING; | |
1557 | } | |
1558 | ||
1559 | return res; | |
1560 | } | |
1561 | ||
1562 | ||
1563 | static int | |
1564 | ieee802_11_set_radius_info(struct hostapd_data *hapd, struct sta_info *sta, | |
1565 | int res, u32 session_timeout, | |
1566 | u32 acct_interim_interval, | |
1567 | struct vlan_description *vlan_id, | |
1568 | struct hostapd_sta_wpa_psk_short **psk, | |
1569 | char **identity, char **radius_cui) | |
1570 | { | |
1571 | if (vlan_id->notempty && | |
1572 | !hostapd_vlan_valid(hapd->conf->vlan, vlan_id)) { | |
1573 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS, | |
1574 | HOSTAPD_LEVEL_INFO, | |
1575 | "Invalid VLAN %d%s received from RADIUS server", | |
1576 | vlan_id->untagged, | |
1577 | vlan_id->tagged[0] ? "+" : ""); | |
1578 | return -1; | |
1579 | } | |
1580 | if (ap_sta_set_vlan(hapd, sta, vlan_id) < 0) | |
1581 | return -1; | |
1582 | if (sta->vlan_id) | |
1583 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS, | |
1584 | HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id); | |
1585 | ||
1586 | hostapd_free_psk_list(sta->psk); | |
1587 | if (hapd->conf->wpa_psk_radius != PSK_RADIUS_IGNORED) { | |
1588 | sta->psk = *psk; | |
1589 | *psk = NULL; | |
1590 | } else { | |
1591 | sta->psk = NULL; | |
1592 | } | |
1593 | ||
1594 | sta->identity = *identity; | |
1595 | *identity = NULL; | |
1596 | sta->radius_cui = *radius_cui; | |
1597 | *radius_cui = NULL; | |
1598 | ||
1599 | if (hapd->conf->acct_interim_interval == 0 && acct_interim_interval) | |
1600 | sta->acct_interim_interval = acct_interim_interval; | |
1601 | if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT) | |
1602 | ap_sta_session_timeout(hapd, sta, session_timeout); | |
1603 | else | |
1604 | ap_sta_no_session_timeout(hapd, sta); | |
1605 | ||
1606 | return 0; | |
1607 | } | |
1608 | ||
1609 | ||
1610 | static void handle_auth(struct hostapd_data *hapd, | |
1611 | const struct ieee80211_mgmt *mgmt, size_t len) | |
1612 | { | |
1613 | u16 auth_alg, auth_transaction, status_code; | |
1614 | u16 resp = WLAN_STATUS_SUCCESS; | |
1615 | struct sta_info *sta = NULL; | |
1616 | int res, reply_res; | |
1617 | u16 fc; | |
1618 | const u8 *challenge = NULL; | |
1619 | u32 session_timeout, acct_interim_interval; | |
1620 | struct vlan_description vlan_id; | |
1621 | struct hostapd_sta_wpa_psk_short *psk = NULL; | |
1622 | u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN]; | |
1623 | size_t resp_ies_len = 0; | |
1624 | char *identity = NULL; | |
1625 | char *radius_cui = NULL; | |
1626 | u16 seq_ctrl; | |
1627 | ||
1628 | if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) { | |
1629 | wpa_printf(MSG_INFO, "handle_auth - too short payload (len=%lu)", | |
1630 | (unsigned long) len); | |
1631 | return; | |
1632 | } | |
1633 | ||
1634 | #ifdef CONFIG_TESTING_OPTIONS | |
1635 | if (hapd->iconf->ignore_auth_probability > 0.0 && | |
1636 | drand48() < hapd->iconf->ignore_auth_probability) { | |
1637 | wpa_printf(MSG_INFO, | |
1638 | "TESTING: ignoring auth frame from " MACSTR, | |
1639 | MAC2STR(mgmt->sa)); | |
1640 | return; | |
1641 | } | |
1642 | #endif /* CONFIG_TESTING_OPTIONS */ | |
1643 | ||
1644 | auth_alg = le_to_host16(mgmt->u.auth.auth_alg); | |
1645 | auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction); | |
1646 | status_code = le_to_host16(mgmt->u.auth.status_code); | |
1647 | fc = le_to_host16(mgmt->frame_control); | |
1648 | seq_ctrl = le_to_host16(mgmt->seq_ctrl); | |
1649 | ||
1650 | if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) + | |
1651 | 2 + WLAN_AUTH_CHALLENGE_LEN && | |
1652 | mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE && | |
1653 | mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN) | |
1654 | challenge = &mgmt->u.auth.variable[2]; | |
1655 | ||
1656 | wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d " | |
1657 | "auth_transaction=%d status_code=%d wep=%d%s " | |
1658 | "seq_ctrl=0x%x%s", | |
1659 | MAC2STR(mgmt->sa), auth_alg, auth_transaction, | |
1660 | status_code, !!(fc & WLAN_FC_ISWEP), | |
1661 | challenge ? " challenge" : "", | |
1662 | seq_ctrl, (fc & WLAN_FC_RETRY) ? " retry" : ""); | |
1663 | ||
1664 | #ifdef CONFIG_NO_RC4 | |
1665 | if (auth_alg == WLAN_AUTH_SHARED_KEY) { | |
1666 | wpa_printf(MSG_INFO, | |
1667 | "Unsupported authentication algorithm (%d)", | |
1668 | auth_alg); | |
1669 | resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG; | |
1670 | goto fail; | |
1671 | } | |
1672 | #endif /* CONFIG_NO_RC4 */ | |
1673 | ||
1674 | if (hapd->tkip_countermeasures) { | |
1675 | resp = WLAN_REASON_MICHAEL_MIC_FAILURE; | |
1676 | goto fail; | |
1677 | } | |
1678 | ||
1679 | if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) && | |
1680 | auth_alg == WLAN_AUTH_OPEN) || | |
1681 | #ifdef CONFIG_IEEE80211R_AP | |
1682 | (hapd->conf->wpa && wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt) && | |
1683 | auth_alg == WLAN_AUTH_FT) || | |
1684 | #endif /* CONFIG_IEEE80211R_AP */ | |
1685 | #ifdef CONFIG_SAE | |
1686 | (hapd->conf->wpa && wpa_key_mgmt_sae(hapd->conf->wpa_key_mgmt) && | |
1687 | auth_alg == WLAN_AUTH_SAE) || | |
1688 | #endif /* CONFIG_SAE */ | |
1689 | #ifdef CONFIG_FILS | |
1690 | (hapd->conf->wpa && wpa_key_mgmt_fils(hapd->conf->wpa_key_mgmt) && | |
1691 | auth_alg == WLAN_AUTH_FILS_SK) || | |
1692 | (hapd->conf->wpa && wpa_key_mgmt_fils(hapd->conf->wpa_key_mgmt) && | |
1693 | hapd->conf->fils_dh_group && | |
1694 | auth_alg == WLAN_AUTH_FILS_SK_PFS) || | |
1695 | #endif /* CONFIG_FILS */ | |
1696 | ((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) && | |
1697 | auth_alg == WLAN_AUTH_SHARED_KEY))) { | |
1698 | wpa_printf(MSG_INFO, "Unsupported authentication algorithm (%d)", | |
1699 | auth_alg); | |
1700 | resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG; | |
1701 | goto fail; | |
1702 | } | |
1703 | ||
1704 | if (!(auth_transaction == 1 || auth_alg == WLAN_AUTH_SAE || | |
1705 | (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) { | |
1706 | wpa_printf(MSG_INFO, "Unknown authentication transaction number (%d)", | |
1707 | auth_transaction); | |
1708 | resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION; | |
1709 | goto fail; | |
1710 | } | |
1711 | ||
1712 | if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) { | |
1713 | wpa_printf(MSG_INFO, "Station " MACSTR " not allowed to authenticate", | |
1714 | MAC2STR(mgmt->sa)); | |
1715 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1716 | goto fail; | |
1717 | } | |
1718 | ||
1719 | if (hapd->conf->no_auth_if_seen_on) { | |
1720 | struct hostapd_data *other; | |
1721 | ||
1722 | other = sta_track_seen_on(hapd->iface, mgmt->sa, | |
1723 | hapd->conf->no_auth_if_seen_on); | |
1724 | if (other) { | |
1725 | u8 *pos; | |
1726 | u32 info; | |
1727 | u8 op_class, channel, phytype; | |
1728 | ||
1729 | wpa_printf(MSG_DEBUG, "%s: Reject authentication from " | |
1730 | MACSTR " since STA has been seen on %s", | |
1731 | hapd->conf->iface, MAC2STR(mgmt->sa), | |
1732 | hapd->conf->no_auth_if_seen_on); | |
1733 | ||
1734 | resp = WLAN_STATUS_REJECTED_WITH_SUGGESTED_BSS_TRANSITION; | |
1735 | pos = &resp_ies[0]; | |
1736 | *pos++ = WLAN_EID_NEIGHBOR_REPORT; | |
1737 | *pos++ = 13; | |
1738 | os_memcpy(pos, other->own_addr, ETH_ALEN); | |
1739 | pos += ETH_ALEN; | |
1740 | info = 0; /* TODO: BSSID Information */ | |
1741 | WPA_PUT_LE32(pos, info); | |
1742 | pos += 4; | |
1743 | if (other->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD) | |
1744 | phytype = 8; /* dmg */ | |
1745 | else if (other->iconf->ieee80211ac) | |
1746 | phytype = 9; /* vht */ | |
1747 | else if (other->iconf->ieee80211n) | |
1748 | phytype = 7; /* ht */ | |
1749 | else if (other->iconf->hw_mode == | |
1750 | HOSTAPD_MODE_IEEE80211A) | |
1751 | phytype = 4; /* ofdm */ | |
1752 | else if (other->iconf->hw_mode == | |
1753 | HOSTAPD_MODE_IEEE80211G) | |
1754 | phytype = 6; /* erp */ | |
1755 | else | |
1756 | phytype = 5; /* hrdsss */ | |
1757 | if (ieee80211_freq_to_channel_ext( | |
1758 | hostapd_hw_get_freq(other, | |
1759 | other->iconf->channel), | |
1760 | other->iconf->secondary_channel, | |
1761 | other->iconf->ieee80211ac, | |
1762 | &op_class, &channel) == NUM_HOSTAPD_MODES) { | |
1763 | op_class = 0; | |
1764 | channel = other->iconf->channel; | |
1765 | } | |
1766 | *pos++ = op_class; | |
1767 | *pos++ = channel; | |
1768 | *pos++ = phytype; | |
1769 | resp_ies_len = pos - &resp_ies[0]; | |
1770 | goto fail; | |
1771 | } | |
1772 | } | |
1773 | ||
1774 | res = ieee802_11_allowed_address( | |
1775 | hapd, mgmt->sa, (const u8 *) mgmt, len, &session_timeout, | |
1776 | &acct_interim_interval, &vlan_id, &psk, &identity, &radius_cui); | |
1777 | if (res == HOSTAPD_ACL_REJECT) { | |
1778 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1779 | goto fail; | |
1780 | } | |
1781 | if (res == HOSTAPD_ACL_PENDING) | |
1782 | return; | |
1783 | ||
1784 | sta = ap_get_sta(hapd, mgmt->sa); | |
1785 | if (sta) { | |
1786 | sta->flags &= ~WLAN_STA_PENDING_FILS_ERP; | |
1787 | if ((fc & WLAN_FC_RETRY) && | |
1788 | sta->last_seq_ctrl != WLAN_INVALID_MGMT_SEQ && | |
1789 | sta->last_seq_ctrl == seq_ctrl && | |
1790 | sta->last_subtype == WLAN_FC_STYPE_AUTH) { | |
1791 | hostapd_logger(hapd, sta->addr, | |
1792 | HOSTAPD_MODULE_IEEE80211, | |
1793 | HOSTAPD_LEVEL_DEBUG, | |
1794 | "Drop repeated authentication frame seq_ctrl=0x%x", | |
1795 | seq_ctrl); | |
1796 | return; | |
1797 | } | |
1798 | #ifdef CONFIG_MESH | |
1799 | if ((hapd->conf->mesh & MESH_ENABLED) && | |
1800 | sta->plink_state == PLINK_BLOCKED) { | |
1801 | wpa_printf(MSG_DEBUG, "Mesh peer " MACSTR | |
1802 | " is blocked - drop Authentication frame", | |
1803 | MAC2STR(mgmt->sa)); | |
1804 | return; | |
1805 | } | |
1806 | #endif /* CONFIG_MESH */ | |
1807 | } else { | |
1808 | #ifdef CONFIG_MESH | |
1809 | if (hapd->conf->mesh & MESH_ENABLED) { | |
1810 | /* if the mesh peer is not available, we don't do auth. | |
1811 | */ | |
1812 | wpa_printf(MSG_DEBUG, "Mesh peer " MACSTR | |
1813 | " not yet known - drop Authentication frame", | |
1814 | MAC2STR(mgmt->sa)); | |
1815 | /* | |
1816 | * Save a copy of the frame so that it can be processed | |
1817 | * if a new peer entry is added shortly after this. | |
1818 | */ | |
1819 | wpabuf_free(hapd->mesh_pending_auth); | |
1820 | hapd->mesh_pending_auth = wpabuf_alloc_copy(mgmt, len); | |
1821 | os_get_reltime(&hapd->mesh_pending_auth_time); | |
1822 | return; | |
1823 | } | |
1824 | #endif /* CONFIG_MESH */ | |
1825 | ||
1826 | sta = ap_sta_add(hapd, mgmt->sa); | |
1827 | if (!sta) { | |
1828 | resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA; | |
1829 | goto fail; | |
1830 | } | |
1831 | } | |
1832 | sta->last_seq_ctrl = seq_ctrl; | |
1833 | sta->last_subtype = WLAN_FC_STYPE_AUTH; | |
1834 | ||
1835 | res = ieee802_11_set_radius_info( | |
1836 | hapd, sta, res, session_timeout, acct_interim_interval, | |
1837 | &vlan_id, &psk, &identity, &radius_cui); | |
1838 | if (res) { | |
1839 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1840 | goto fail; | |
1841 | } | |
1842 | ||
1843 | sta->flags &= ~WLAN_STA_PREAUTH; | |
1844 | ieee802_1x_notify_pre_auth(sta->eapol_sm, 0); | |
1845 | ||
1846 | /* | |
1847 | * If the driver supports full AP client state, add a station to the | |
1848 | * driver before sending authentication reply to make sure the driver | |
1849 | * has resources, and not to go through the entire authentication and | |
1850 | * association handshake, and fail it at the end. | |
1851 | * | |
1852 | * If this is not the first transaction, in a multi-step authentication | |
1853 | * algorithm, the station already exists in the driver | |
1854 | * (sta->added_unassoc = 1) so skip it. | |
1855 | * | |
1856 | * In mesh mode, the station was already added to the driver when the | |
1857 | * NEW_PEER_CANDIDATE event is received. | |
1858 | * | |
1859 | * If PMF was negotiated for the existing association, skip this to | |
1860 | * avoid dropping the STA entry and the associated keys. This is needed | |
1861 | * to allow the original connection work until the attempt can complete | |
1862 | * (re)association, so that unprotected Authentication frame cannot be | |
1863 | * used to bypass PMF protection. | |
1864 | */ | |
1865 | if (FULL_AP_CLIENT_STATE_SUPP(hapd->iface->drv_flags) && | |
1866 | (!(sta->flags & WLAN_STA_MFP) || !ap_sta_is_authorized(sta)) && | |
1867 | !(hapd->conf->mesh & MESH_ENABLED) && | |
1868 | !(sta->added_unassoc)) { | |
1869 | /* | |
1870 | * If a station that is already associated to the AP, is trying | |
1871 | * to authenticate again, remove the STA entry, in order to make | |
1872 | * sure the STA PS state gets cleared and configuration gets | |
1873 | * updated. To handle this, station's added_unassoc flag is | |
1874 | * cleared once the station has completed association. | |
1875 | */ | |
1876 | hostapd_drv_sta_remove(hapd, sta->addr); | |
1877 | sta->flags &= ~(WLAN_STA_ASSOC | WLAN_STA_AUTH | | |
1878 | WLAN_STA_AUTHORIZED); | |
1879 | ||
1880 | if (hostapd_sta_add(hapd, sta->addr, 0, 0, NULL, 0, 0, | |
1881 | NULL, NULL, sta->flags, 0, 0, 0, 0)) { | |
1882 | hostapd_logger(hapd, sta->addr, | |
1883 | HOSTAPD_MODULE_IEEE80211, | |
1884 | HOSTAPD_LEVEL_NOTICE, | |
1885 | "Could not add STA to kernel driver"); | |
1886 | resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA; | |
1887 | goto fail; | |
1888 | } | |
1889 | ||
1890 | sta->added_unassoc = 1; | |
1891 | } | |
1892 | ||
1893 | switch (auth_alg) { | |
1894 | case WLAN_AUTH_OPEN: | |
1895 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
1896 | HOSTAPD_LEVEL_DEBUG, | |
1897 | "authentication OK (open system)"); | |
1898 | sta->flags |= WLAN_STA_AUTH; | |
1899 | wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH); | |
1900 | sta->auth_alg = WLAN_AUTH_OPEN; | |
1901 | mlme_authenticate_indication(hapd, sta); | |
1902 | break; | |
1903 | #ifndef CONFIG_NO_RC4 | |
1904 | case WLAN_AUTH_SHARED_KEY: | |
1905 | resp = auth_shared_key(hapd, sta, auth_transaction, challenge, | |
1906 | fc & WLAN_FC_ISWEP); | |
1907 | sta->auth_alg = WLAN_AUTH_SHARED_KEY; | |
1908 | mlme_authenticate_indication(hapd, sta); | |
1909 | if (sta->challenge && auth_transaction == 1) { | |
1910 | resp_ies[0] = WLAN_EID_CHALLENGE; | |
1911 | resp_ies[1] = WLAN_AUTH_CHALLENGE_LEN; | |
1912 | os_memcpy(resp_ies + 2, sta->challenge, | |
1913 | WLAN_AUTH_CHALLENGE_LEN); | |
1914 | resp_ies_len = 2 + WLAN_AUTH_CHALLENGE_LEN; | |
1915 | } | |
1916 | break; | |
1917 | #endif /* CONFIG_NO_RC4 */ | |
1918 | #ifdef CONFIG_IEEE80211R_AP | |
1919 | case WLAN_AUTH_FT: | |
1920 | sta->auth_alg = WLAN_AUTH_FT; | |
1921 | if (sta->wpa_sm == NULL) | |
1922 | sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, | |
1923 | sta->addr, NULL); | |
1924 | if (sta->wpa_sm == NULL) { | |
1925 | wpa_printf(MSG_DEBUG, "FT: Failed to initialize WPA " | |
1926 | "state machine"); | |
1927 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1928 | goto fail; | |
1929 | } | |
1930 | wpa_ft_process_auth(sta->wpa_sm, mgmt->bssid, | |
1931 | auth_transaction, mgmt->u.auth.variable, | |
1932 | len - IEEE80211_HDRLEN - | |
1933 | sizeof(mgmt->u.auth), | |
1934 | handle_auth_ft_finish, hapd); | |
1935 | /* handle_auth_ft_finish() callback will complete auth. */ | |
1936 | return; | |
1937 | #endif /* CONFIG_IEEE80211R_AP */ | |
1938 | #ifdef CONFIG_SAE | |
1939 | case WLAN_AUTH_SAE: | |
1940 | #ifdef CONFIG_MESH | |
1941 | if (status_code == WLAN_STATUS_SUCCESS && | |
1942 | hapd->conf->mesh & MESH_ENABLED) { | |
1943 | if (sta->wpa_sm == NULL) | |
1944 | sta->wpa_sm = | |
1945 | wpa_auth_sta_init(hapd->wpa_auth, | |
1946 | sta->addr, NULL); | |
1947 | if (sta->wpa_sm == NULL) { | |
1948 | wpa_printf(MSG_DEBUG, | |
1949 | "SAE: Failed to initialize WPA state machine"); | |
1950 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
1951 | goto fail; | |
1952 | } | |
1953 | } | |
1954 | #endif /* CONFIG_MESH */ | |
1955 | handle_auth_sae(hapd, sta, mgmt, len, auth_transaction, | |
1956 | status_code); | |
1957 | return; | |
1958 | #endif /* CONFIG_SAE */ | |
1959 | #ifdef CONFIG_FILS | |
1960 | case WLAN_AUTH_FILS_SK: | |
1961 | case WLAN_AUTH_FILS_SK_PFS: | |
1962 | handle_auth_fils(hapd, sta, mgmt->u.auth.variable, | |
1963 | len - IEEE80211_HDRLEN - sizeof(mgmt->u.auth), | |
1964 | auth_alg, auth_transaction, status_code, | |
1965 | handle_auth_fils_finish); | |
1966 | return; | |
1967 | #endif /* CONFIG_FILS */ | |
1968 | } | |
1969 | ||
1970 | fail: | |
1971 | os_free(identity); | |
1972 | os_free(radius_cui); | |
1973 | hostapd_free_psk_list(psk); | |
1974 | ||
1975 | reply_res = send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg, | |
1976 | auth_transaction + 1, resp, resp_ies, | |
1977 | resp_ies_len); | |
1978 | ||
1979 | if (sta && sta->added_unassoc && (resp != WLAN_STATUS_SUCCESS || | |
1980 | reply_res != WLAN_STATUS_SUCCESS)) { | |
1981 | hostapd_drv_sta_remove(hapd, sta->addr); | |
1982 | sta->added_unassoc = 0; | |
1983 | } | |
1984 | } | |
1985 | ||
1986 | ||
1987 | int hostapd_get_aid(struct hostapd_data *hapd, struct sta_info *sta) | |
1988 | { | |
1989 | int i, j = 32, aid; | |
1990 | ||
1991 | /* get a unique AID */ | |
1992 | if (sta->aid > 0) { | |
1993 | wpa_printf(MSG_DEBUG, " old AID %d", sta->aid); | |
1994 | return 0; | |
1995 | } | |
1996 | ||
1997 | if (TEST_FAIL()) | |
1998 | return -1; | |
1999 | ||
2000 | for (i = 0; i < AID_WORDS; i++) { | |
2001 | if (hapd->sta_aid[i] == (u32) -1) | |
2002 | continue; | |
2003 | for (j = 0; j < 32; j++) { | |
2004 | if (!(hapd->sta_aid[i] & BIT(j))) | |
2005 | break; | |
2006 | } | |
2007 | if (j < 32) | |
2008 | break; | |
2009 | } | |
2010 | if (j == 32) | |
2011 | return -1; | |
2012 | aid = i * 32 + j + 1; | |
2013 | if (aid > 2007) | |
2014 | return -1; | |
2015 | ||
2016 | sta->aid = aid; | |
2017 | hapd->sta_aid[i] |= BIT(j); | |
2018 | wpa_printf(MSG_DEBUG, " new AID %d", sta->aid); | |
2019 | return 0; | |
2020 | } | |
2021 | ||
2022 | ||
2023 | static u16 check_ssid(struct hostapd_data *hapd, struct sta_info *sta, | |
2024 | const u8 *ssid_ie, size_t ssid_ie_len) | |
2025 | { | |
2026 | if (ssid_ie == NULL) | |
2027 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
2028 | ||
2029 | if (ssid_ie_len != hapd->conf->ssid.ssid_len || | |
2030 | os_memcmp(ssid_ie, hapd->conf->ssid.ssid, ssid_ie_len) != 0) { | |
2031 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
2032 | HOSTAPD_LEVEL_INFO, | |
2033 | "Station tried to associate with unknown SSID " | |
2034 | "'%s'", wpa_ssid_txt(ssid_ie, ssid_ie_len)); | |
2035 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
2036 | } | |
2037 | ||
2038 | return WLAN_STATUS_SUCCESS; | |
2039 | } | |
2040 | ||
2041 | ||
2042 | static u16 check_wmm(struct hostapd_data *hapd, struct sta_info *sta, | |
2043 | const u8 *wmm_ie, size_t wmm_ie_len) | |
2044 | { | |
2045 | sta->flags &= ~WLAN_STA_WMM; | |
2046 | sta->qosinfo = 0; | |
2047 | if (wmm_ie && hapd->conf->wmm_enabled) { | |
2048 | struct wmm_information_element *wmm; | |
2049 | ||
2050 | if (!hostapd_eid_wmm_valid(hapd, wmm_ie, wmm_ie_len)) { | |
2051 | hostapd_logger(hapd, sta->addr, | |
2052 | HOSTAPD_MODULE_WPA, | |
2053 | HOSTAPD_LEVEL_DEBUG, | |
2054 | "invalid WMM element in association " | |
2055 | "request"); | |
2056 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
2057 | } | |
2058 | ||
2059 | sta->flags |= WLAN_STA_WMM; | |
2060 | wmm = (struct wmm_information_element *) wmm_ie; | |
2061 | sta->qosinfo = wmm->qos_info; | |
2062 | } | |
2063 | return WLAN_STATUS_SUCCESS; | |
2064 | } | |
2065 | ||
2066 | ||
2067 | static u16 copy_supp_rates(struct hostapd_data *hapd, struct sta_info *sta, | |
2068 | struct ieee802_11_elems *elems) | |
2069 | { | |
2070 | /* Supported rates not used in IEEE 802.11ad/DMG */ | |
2071 | if (hapd->iface->current_mode && | |
2072 | hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211AD) | |
2073 | return WLAN_STATUS_SUCCESS; | |
2074 | ||
2075 | if (!elems->supp_rates) { | |
2076 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
2077 | HOSTAPD_LEVEL_DEBUG, | |
2078 | "No supported rates element in AssocReq"); | |
2079 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
2080 | } | |
2081 | ||
2082 | if (elems->supp_rates_len + elems->ext_supp_rates_len > | |
2083 | sizeof(sta->supported_rates)) { | |
2084 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
2085 | HOSTAPD_LEVEL_DEBUG, | |
2086 | "Invalid supported rates element length %d+%d", | |
2087 | elems->supp_rates_len, | |
2088 | elems->ext_supp_rates_len); | |
2089 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
2090 | } | |
2091 | ||
2092 | sta->supported_rates_len = merge_byte_arrays( | |
2093 | sta->supported_rates, sizeof(sta->supported_rates), | |
2094 | elems->supp_rates, elems->supp_rates_len, | |
2095 | elems->ext_supp_rates, elems->ext_supp_rates_len); | |
2096 | ||
2097 | return WLAN_STATUS_SUCCESS; | |
2098 | } | |
2099 | ||
2100 | ||
2101 | static u16 check_ext_capab(struct hostapd_data *hapd, struct sta_info *sta, | |
2102 | const u8 *ext_capab_ie, size_t ext_capab_ie_len) | |
2103 | { | |
2104 | #ifdef CONFIG_INTERWORKING | |
2105 | /* check for QoS Map support */ | |
2106 | if (ext_capab_ie_len >= 5) { | |
2107 | if (ext_capab_ie[4] & 0x01) | |
2108 | sta->qos_map_enabled = 1; | |
2109 | } | |
2110 | #endif /* CONFIG_INTERWORKING */ | |
2111 | ||
2112 | if (ext_capab_ie_len > 0) | |
2113 | sta->ecsa_supported = !!(ext_capab_ie[0] & BIT(2)); | |
2114 | ||
2115 | return WLAN_STATUS_SUCCESS; | |
2116 | } | |
2117 | ||
2118 | ||
2119 | #ifdef CONFIG_OWE | |
2120 | static u16 owe_process_assoc_req(struct sta_info *sta, const u8 *owe_dh, | |
2121 | u8 owe_dh_len) | |
2122 | { | |
2123 | struct wpabuf *secret, *pub, *hkey; | |
2124 | int res; | |
2125 | u8 prk[SHA256_MAC_LEN], pmkid[SHA256_MAC_LEN]; | |
2126 | const char *info = "OWE Key Generation"; | |
2127 | const u8 *addr[2]; | |
2128 | size_t len[2]; | |
2129 | ||
2130 | if (WPA_GET_LE16(owe_dh) != OWE_DH_GROUP) | |
2131 | return WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED; | |
2132 | ||
2133 | crypto_ecdh_deinit(sta->owe_ecdh); | |
2134 | sta->owe_ecdh = crypto_ecdh_init(OWE_DH_GROUP); | |
2135 | if (!sta->owe_ecdh) | |
2136 | return WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED; | |
2137 | ||
2138 | secret = crypto_ecdh_set_peerkey(sta->owe_ecdh, 0, owe_dh + 2, | |
2139 | owe_dh_len - 2); | |
2140 | if (!secret) { | |
2141 | wpa_printf(MSG_DEBUG, "OWE: Invalid peer DH public key"); | |
2142 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
2143 | } | |
2144 | wpa_hexdump_buf_key(MSG_DEBUG, "OWE: DH shared secret", secret); | |
2145 | ||
2146 | /* prk = HKDF-extract(C | A | group, z) */ | |
2147 | ||
2148 | pub = crypto_ecdh_get_pubkey(sta->owe_ecdh, 0); | |
2149 | if (!pub) { | |
2150 | wpabuf_clear_free(secret); | |
2151 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
2152 | } | |
2153 | ||
2154 | /* PMKID = Truncate-128(Hash(C | A)) */ | |
2155 | addr[0] = owe_dh + 2; | |
2156 | len[0] = owe_dh_len - 2; | |
2157 | addr[1] = wpabuf_head(pub); | |
2158 | len[1] = wpabuf_len(pub); | |
2159 | res = sha256_vector(2, addr, len, pmkid); | |
2160 | if (res < 0) { | |
2161 | wpabuf_free(pub); | |
2162 | wpabuf_clear_free(secret); | |
2163 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
2164 | } | |
2165 | ||
2166 | hkey = wpabuf_alloc(owe_dh_len - 2 + wpabuf_len(pub) + 2); | |
2167 | if (!hkey) { | |
2168 | wpabuf_free(pub); | |
2169 | wpabuf_clear_free(secret); | |
2170 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
2171 | } | |
2172 | ||
2173 | wpabuf_put_data(hkey, owe_dh + 2, owe_dh_len - 2); /* C */ | |
2174 | wpabuf_put_buf(hkey, pub); /* A */ | |
2175 | wpabuf_free(pub); | |
2176 | wpabuf_put_le16(hkey, OWE_DH_GROUP); /* group */ | |
2177 | res = hmac_sha256(wpabuf_head(hkey), wpabuf_len(hkey), | |
2178 | wpabuf_head(secret), wpabuf_len(secret), prk); | |
2179 | wpabuf_clear_free(hkey); | |
2180 | wpabuf_clear_free(secret); | |
2181 | if (res < 0) | |
2182 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
2183 | ||
2184 | wpa_hexdump_key(MSG_DEBUG, "OWE: prk", prk, SHA256_MAC_LEN); | |
2185 | ||
2186 | /* PMK = HKDF-expand(prk, "OWE Key Generation", n) */ | |
2187 | ||
2188 | os_free(sta->owe_pmk); | |
2189 | sta->owe_pmk = os_malloc(PMK_LEN); | |
2190 | if (!sta->owe_pmk) { | |
2191 | os_memset(prk, 0, SHA256_MAC_LEN); | |
2192 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
2193 | } | |
2194 | ||
2195 | res = hmac_sha256_kdf(prk, SHA256_MAC_LEN, NULL, (const u8 *) info, | |
2196 | os_strlen(info), sta->owe_pmk, PMK_LEN); | |
2197 | os_memset(prk, 0, SHA256_MAC_LEN); | |
2198 | if (res < 0) { | |
2199 | os_free(sta->owe_pmk); | |
2200 | sta->owe_pmk = NULL; | |
2201 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
2202 | } | |
2203 | ||
2204 | wpa_hexdump_key(MSG_DEBUG, "OWE: PMK", sta->owe_pmk, PMK_LEN); | |
2205 | wpa_hexdump(MSG_DEBUG, "OWE: PMKID", pmkid, PMKID_LEN); | |
2206 | /* TODO: Add PMKSA cache entry */ | |
2207 | ||
2208 | return WLAN_STATUS_SUCCESS; | |
2209 | } | |
2210 | #endif /* CONFIG_OWE */ | |
2211 | ||
2212 | ||
2213 | static u16 check_assoc_ies(struct hostapd_data *hapd, struct sta_info *sta, | |
2214 | const u8 *ies, size_t ies_len, int reassoc) | |
2215 | { | |
2216 | struct ieee802_11_elems elems; | |
2217 | u16 resp; | |
2218 | const u8 *wpa_ie; | |
2219 | size_t wpa_ie_len; | |
2220 | const u8 *p2p_dev_addr = NULL; | |
2221 | ||
2222 | if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) { | |
2223 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
2224 | HOSTAPD_LEVEL_INFO, "Station sent an invalid " | |
2225 | "association request"); | |
2226 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
2227 | } | |
2228 | ||
2229 | resp = check_ssid(hapd, sta, elems.ssid, elems.ssid_len); | |
2230 | if (resp != WLAN_STATUS_SUCCESS) | |
2231 | return resp; | |
2232 | resp = check_wmm(hapd, sta, elems.wmm, elems.wmm_len); | |
2233 | if (resp != WLAN_STATUS_SUCCESS) | |
2234 | return resp; | |
2235 | resp = check_ext_capab(hapd, sta, elems.ext_capab, elems.ext_capab_len); | |
2236 | if (resp != WLAN_STATUS_SUCCESS) | |
2237 | return resp; | |
2238 | resp = copy_supp_rates(hapd, sta, &elems); | |
2239 | if (resp != WLAN_STATUS_SUCCESS) | |
2240 | return resp; | |
2241 | #ifdef CONFIG_IEEE80211N | |
2242 | resp = copy_sta_ht_capab(hapd, sta, elems.ht_capabilities); | |
2243 | if (resp != WLAN_STATUS_SUCCESS) | |
2244 | return resp; | |
2245 | if (hapd->iconf->ieee80211n && hapd->iconf->require_ht && | |
2246 | !(sta->flags & WLAN_STA_HT)) { | |
2247 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
2248 | HOSTAPD_LEVEL_INFO, "Station does not support " | |
2249 | "mandatory HT PHY - reject association"); | |
2250 | return WLAN_STATUS_ASSOC_DENIED_NO_HT; | |
2251 | } | |
2252 | #endif /* CONFIG_IEEE80211N */ | |
2253 | ||
2254 | #ifdef CONFIG_IEEE80211AC | |
2255 | if (hapd->iconf->ieee80211ac) { | |
2256 | resp = copy_sta_vht_capab(hapd, sta, elems.vht_capabilities); | |
2257 | if (resp != WLAN_STATUS_SUCCESS) | |
2258 | return resp; | |
2259 | ||
2260 | resp = set_sta_vht_opmode(hapd, sta, elems.vht_opmode_notif); | |
2261 | if (resp != WLAN_STATUS_SUCCESS) | |
2262 | return resp; | |
2263 | } | |
2264 | ||
2265 | if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht && | |
2266 | !(sta->flags & WLAN_STA_VHT)) { | |
2267 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
2268 | HOSTAPD_LEVEL_INFO, "Station does not support " | |
2269 | "mandatory VHT PHY - reject association"); | |
2270 | return WLAN_STATUS_ASSOC_DENIED_NO_VHT; | |
2271 | } | |
2272 | ||
2273 | if (hapd->conf->vendor_vht && !elems.vht_capabilities) { | |
2274 | resp = copy_sta_vendor_vht(hapd, sta, elems.vendor_vht, | |
2275 | elems.vendor_vht_len); | |
2276 | if (resp != WLAN_STATUS_SUCCESS) | |
2277 | return resp; | |
2278 | } | |
2279 | #endif /* CONFIG_IEEE80211AC */ | |
2280 | ||
2281 | #ifdef CONFIG_P2P | |
2282 | if (elems.p2p) { | |
2283 | wpabuf_free(sta->p2p_ie); | |
2284 | sta->p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, | |
2285 | P2P_IE_VENDOR_TYPE); | |
2286 | if (sta->p2p_ie) | |
2287 | p2p_dev_addr = p2p_get_go_dev_addr(sta->p2p_ie); | |
2288 | } else { | |
2289 | wpabuf_free(sta->p2p_ie); | |
2290 | sta->p2p_ie = NULL; | |
2291 | } | |
2292 | #endif /* CONFIG_P2P */ | |
2293 | ||
2294 | if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) { | |
2295 | wpa_ie = elems.rsn_ie; | |
2296 | wpa_ie_len = elems.rsn_ie_len; | |
2297 | } else if ((hapd->conf->wpa & WPA_PROTO_WPA) && | |
2298 | elems.wpa_ie) { | |
2299 | wpa_ie = elems.wpa_ie; | |
2300 | wpa_ie_len = elems.wpa_ie_len; | |
2301 | } else { | |
2302 | wpa_ie = NULL; | |
2303 | wpa_ie_len = 0; | |
2304 | } | |
2305 | ||
2306 | #ifdef CONFIG_WPS | |
2307 | sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS | WLAN_STA_WPS2); | |
2308 | if (hapd->conf->wps_state && elems.wps_ie) { | |
2309 | wpa_printf(MSG_DEBUG, "STA included WPS IE in (Re)Association " | |
2310 | "Request - assume WPS is used"); | |
2311 | sta->flags |= WLAN_STA_WPS; | |
2312 | wpabuf_free(sta->wps_ie); | |
2313 | sta->wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, | |
2314 | WPS_IE_VENDOR_TYPE); | |
2315 | if (sta->wps_ie && wps_is_20(sta->wps_ie)) { | |
2316 | wpa_printf(MSG_DEBUG, "WPS: STA supports WPS 2.0"); | |
2317 | sta->flags |= WLAN_STA_WPS2; | |
2318 | } | |
2319 | wpa_ie = NULL; | |
2320 | wpa_ie_len = 0; | |
2321 | if (sta->wps_ie && wps_validate_assoc_req(sta->wps_ie) < 0) { | |
2322 | wpa_printf(MSG_DEBUG, "WPS: Invalid WPS IE in " | |
2323 | "(Re)Association Request - reject"); | |
2324 | return WLAN_STATUS_INVALID_IE; | |
2325 | } | |
2326 | } else if (hapd->conf->wps_state && wpa_ie == NULL) { | |
2327 | wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE in " | |
2328 | "(Re)Association Request - possible WPS use"); | |
2329 | sta->flags |= WLAN_STA_MAYBE_WPS; | |
2330 | } else | |
2331 | #endif /* CONFIG_WPS */ | |
2332 | if (hapd->conf->wpa && wpa_ie == NULL) { | |
2333 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
2334 | HOSTAPD_LEVEL_INFO, | |
2335 | "No WPA/RSN IE in association request"); | |
2336 | return WLAN_STATUS_INVALID_IE; | |
2337 | } | |
2338 | ||
2339 | if (hapd->conf->wpa && wpa_ie) { | |
2340 | int res; | |
2341 | wpa_ie -= 2; | |
2342 | wpa_ie_len += 2; | |
2343 | if (sta->wpa_sm == NULL) | |
2344 | sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, | |
2345 | sta->addr, | |
2346 | p2p_dev_addr); | |
2347 | if (sta->wpa_sm == NULL) { | |
2348 | wpa_printf(MSG_WARNING, "Failed to initialize WPA " | |
2349 | "state machine"); | |
2350 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
2351 | } | |
2352 | res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm, | |
2353 | wpa_ie, wpa_ie_len, | |
2354 | elems.mdie, elems.mdie_len, | |
2355 | elems.owe_dh, elems.owe_dh_len); | |
2356 | resp = wpa_res_to_status_code(res); | |
2357 | if (resp != WLAN_STATUS_SUCCESS) | |
2358 | return resp; | |
2359 | #ifdef CONFIG_IEEE80211W | |
2360 | if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out && | |
2361 | sta->sa_query_count > 0) | |
2362 | ap_check_sa_query_timeout(hapd, sta); | |
2363 | if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out && | |
2364 | (!reassoc || sta->auth_alg != WLAN_AUTH_FT)) { | |
2365 | /* | |
2366 | * STA has already been associated with MFP and SA | |
2367 | * Query timeout has not been reached. Reject the | |
2368 | * association attempt temporarily and start SA Query, | |
2369 | * if one is not pending. | |
2370 | */ | |
2371 | ||
2372 | if (sta->sa_query_count == 0) | |
2373 | ap_sta_start_sa_query(hapd, sta); | |
2374 | ||
2375 | return WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY; | |
2376 | } | |
2377 | ||
2378 | if (wpa_auth_uses_mfp(sta->wpa_sm)) | |
2379 | sta->flags |= WLAN_STA_MFP; | |
2380 | else | |
2381 | sta->flags &= ~WLAN_STA_MFP; | |
2382 | #endif /* CONFIG_IEEE80211W */ | |
2383 | ||
2384 | #ifdef CONFIG_IEEE80211R_AP | |
2385 | if (sta->auth_alg == WLAN_AUTH_FT) { | |
2386 | if (!reassoc) { | |
2387 | wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried " | |
2388 | "to use association (not " | |
2389 | "re-association) with FT auth_alg", | |
2390 | MAC2STR(sta->addr)); | |
2391 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
2392 | } | |
2393 | ||
2394 | resp = wpa_ft_validate_reassoc(sta->wpa_sm, ies, | |
2395 | ies_len); | |
2396 | if (resp != WLAN_STATUS_SUCCESS) | |
2397 | return resp; | |
2398 | } | |
2399 | #endif /* CONFIG_IEEE80211R_AP */ | |
2400 | ||
2401 | #ifdef CONFIG_SAE | |
2402 | if (wpa_auth_uses_sae(sta->wpa_sm) && | |
2403 | sta->auth_alg == WLAN_AUTH_OPEN) { | |
2404 | struct rsn_pmksa_cache_entry *sa; | |
2405 | sa = wpa_auth_sta_get_pmksa(sta->wpa_sm); | |
2406 | if (!sa || sa->akmp != WPA_KEY_MGMT_SAE) { | |
2407 | wpa_printf(MSG_DEBUG, | |
2408 | "SAE: No PMKSA cache entry found for " | |
2409 | MACSTR, MAC2STR(sta->addr)); | |
2410 | return WLAN_STATUS_INVALID_PMKID; | |
2411 | } | |
2412 | wpa_printf(MSG_DEBUG, "SAE: " MACSTR | |
2413 | " using PMKSA caching", MAC2STR(sta->addr)); | |
2414 | } else if (wpa_auth_uses_sae(sta->wpa_sm) && | |
2415 | sta->auth_alg != WLAN_AUTH_SAE && | |
2416 | !(sta->auth_alg == WLAN_AUTH_FT && | |
2417 | wpa_auth_uses_ft_sae(sta->wpa_sm))) { | |
2418 | wpa_printf(MSG_DEBUG, "SAE: " MACSTR " tried to use " | |
2419 | "SAE AKM after non-SAE auth_alg %u", | |
2420 | MAC2STR(sta->addr), sta->auth_alg); | |
2421 | return WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG; | |
2422 | } | |
2423 | #endif /* CONFIG_SAE */ | |
2424 | ||
2425 | #ifdef CONFIG_OWE | |
2426 | if ((hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_OWE) && | |
2427 | wpa_auth_sta_key_mgmt(sta->wpa_sm) == WPA_KEY_MGMT_OWE && | |
2428 | elems.owe_dh) { | |
2429 | resp = owe_process_assoc_req(sta, elems.owe_dh, | |
2430 | elems.owe_dh_len); | |
2431 | if (resp != WLAN_STATUS_SUCCESS) | |
2432 | return resp; | |
2433 | } | |
2434 | #endif /* CONFIG_OWE */ | |
2435 | ||
2436 | #ifdef CONFIG_IEEE80211N | |
2437 | if ((sta->flags & (WLAN_STA_HT | WLAN_STA_VHT)) && | |
2438 | wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) { | |
2439 | hostapd_logger(hapd, sta->addr, | |
2440 | HOSTAPD_MODULE_IEEE80211, | |
2441 | HOSTAPD_LEVEL_INFO, | |
2442 | "Station tried to use TKIP with HT " | |
2443 | "association"); | |
2444 | return WLAN_STATUS_CIPHER_REJECTED_PER_POLICY; | |
2445 | } | |
2446 | #endif /* CONFIG_IEEE80211N */ | |
2447 | #ifdef CONFIG_HS20 | |
2448 | } else if (hapd->conf->osen) { | |
2449 | if (elems.osen == NULL) { | |
2450 | hostapd_logger( | |
2451 | hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
2452 | HOSTAPD_LEVEL_INFO, | |
2453 | "No HS 2.0 OSEN element in association request"); | |
2454 | return WLAN_STATUS_INVALID_IE; | |
2455 | } | |
2456 | ||
2457 | wpa_printf(MSG_DEBUG, "HS 2.0: OSEN association"); | |
2458 | if (sta->wpa_sm == NULL) | |
2459 | sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, | |
2460 | sta->addr, NULL); | |
2461 | if (sta->wpa_sm == NULL) { | |
2462 | wpa_printf(MSG_WARNING, "Failed to initialize WPA " | |
2463 | "state machine"); | |
2464 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
2465 | } | |
2466 | if (wpa_validate_osen(hapd->wpa_auth, sta->wpa_sm, | |
2467 | elems.osen - 2, elems.osen_len + 2) < 0) | |
2468 | return WLAN_STATUS_INVALID_IE; | |
2469 | #endif /* CONFIG_HS20 */ | |
2470 | } else | |
2471 | wpa_auth_sta_no_wpa(sta->wpa_sm); | |
2472 | ||
2473 | #ifdef CONFIG_P2P | |
2474 | p2p_group_notif_assoc(hapd->p2p_group, sta->addr, ies, ies_len); | |
2475 | #endif /* CONFIG_P2P */ | |
2476 | ||
2477 | #ifdef CONFIG_HS20 | |
2478 | wpabuf_free(sta->hs20_ie); | |
2479 | if (elems.hs20 && elems.hs20_len > 4) { | |
2480 | sta->hs20_ie = wpabuf_alloc_copy(elems.hs20 + 4, | |
2481 | elems.hs20_len - 4); | |
2482 | } else | |
2483 | sta->hs20_ie = NULL; | |
2484 | #endif /* CONFIG_HS20 */ | |
2485 | ||
2486 | #ifdef CONFIG_FST | |
2487 | wpabuf_free(sta->mb_ies); | |
2488 | if (hapd->iface->fst) | |
2489 | sta->mb_ies = mb_ies_by_info(&elems.mb_ies); | |
2490 | else | |
2491 | sta->mb_ies = NULL; | |
2492 | #endif /* CONFIG_FST */ | |
2493 | ||
2494 | #ifdef CONFIG_MBO | |
2495 | mbo_ap_check_sta_assoc(hapd, sta, &elems); | |
2496 | ||
2497 | if (hapd->conf->mbo_enabled && (hapd->conf->wpa & 2) && | |
2498 | elems.mbo && sta->cell_capa && !(sta->flags & WLAN_STA_MFP) && | |
2499 | hapd->conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) { | |
2500 | wpa_printf(MSG_INFO, | |
2501 | "MBO: Reject WPA2 association without PMF"); | |
2502 | return WLAN_STATUS_UNSPECIFIED_FAILURE; | |
2503 | } | |
2504 | #endif /* CONFIG_MBO */ | |
2505 | ||
2506 | ap_copy_sta_supp_op_classes(sta, elems.supp_op_classes, | |
2507 | elems.supp_op_classes_len); | |
2508 | ||
2509 | if ((sta->capability & WLAN_CAPABILITY_RADIO_MEASUREMENT) && | |
2510 | elems.rrm_enabled && | |
2511 | elems.rrm_enabled_len >= sizeof(sta->rrm_enabled_capa)) | |
2512 | os_memcpy(sta->rrm_enabled_capa, elems.rrm_enabled, | |
2513 | sizeof(sta->rrm_enabled_capa)); | |
2514 | ||
2515 | return WLAN_STATUS_SUCCESS; | |
2516 | } | |
2517 | ||
2518 | ||
2519 | static void send_deauth(struct hostapd_data *hapd, const u8 *addr, | |
2520 | u16 reason_code) | |
2521 | { | |
2522 | int send_len; | |
2523 | struct ieee80211_mgmt reply; | |
2524 | ||
2525 | os_memset(&reply, 0, sizeof(reply)); | |
2526 | reply.frame_control = | |
2527 | IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_DEAUTH); | |
2528 | os_memcpy(reply.da, addr, ETH_ALEN); | |
2529 | os_memcpy(reply.sa, hapd->own_addr, ETH_ALEN); | |
2530 | os_memcpy(reply.bssid, hapd->own_addr, ETH_ALEN); | |
2531 | ||
2532 | send_len = IEEE80211_HDRLEN + sizeof(reply.u.deauth); | |
2533 | reply.u.deauth.reason_code = host_to_le16(reason_code); | |
2534 | ||
2535 | if (hostapd_drv_send_mlme(hapd, &reply, send_len, 0) < 0) | |
2536 | wpa_printf(MSG_INFO, "Failed to send deauth: %s", | |
2537 | strerror(errno)); | |
2538 | } | |
2539 | ||
2540 | ||
2541 | static int add_associated_sta(struct hostapd_data *hapd, | |
2542 | struct sta_info *sta) | |
2543 | { | |
2544 | struct ieee80211_ht_capabilities ht_cap; | |
2545 | struct ieee80211_vht_capabilities vht_cap; | |
2546 | ||
2547 | /* | |
2548 | * Remove the STA entry to ensure the STA PS state gets cleared and | |
2549 | * configuration gets updated. This is relevant for cases, such as | |
2550 | * FT-over-the-DS, where a station re-associates back to the same AP but | |
2551 | * skips the authentication flow, or if working with a driver that | |
2552 | * does not support full AP client state. | |
2553 | */ | |
2554 | if (!sta->added_unassoc) | |
2555 | hostapd_drv_sta_remove(hapd, sta->addr); | |
2556 | ||
2557 | #ifdef CONFIG_IEEE80211N | |
2558 | if (sta->flags & WLAN_STA_HT) | |
2559 | hostapd_get_ht_capab(hapd, sta->ht_capabilities, &ht_cap); | |
2560 | #endif /* CONFIG_IEEE80211N */ | |
2561 | #ifdef CONFIG_IEEE80211AC | |
2562 | if (sta->flags & WLAN_STA_VHT) | |
2563 | hostapd_get_vht_capab(hapd, sta->vht_capabilities, &vht_cap); | |
2564 | #endif /* CONFIG_IEEE80211AC */ | |
2565 | ||
2566 | /* | |
2567 | * Add the station with forced WLAN_STA_ASSOC flag. The sta->flags | |
2568 | * will be set when the ACK frame for the (Re)Association Response frame | |
2569 | * is processed (TX status driver event). | |
2570 | */ | |
2571 | if (hostapd_sta_add(hapd, sta->addr, sta->aid, sta->capability, | |
2572 | sta->supported_rates, sta->supported_rates_len, | |
2573 | sta->listen_interval, | |
2574 | sta->flags & WLAN_STA_HT ? &ht_cap : NULL, | |
2575 | sta->flags & WLAN_STA_VHT ? &vht_cap : NULL, | |
2576 | sta->flags | WLAN_STA_ASSOC, sta->qosinfo, | |
2577 | sta->vht_opmode, sta->p2p_ie ? 1 : 0, | |
2578 | sta->added_unassoc)) { | |
2579 | hostapd_logger(hapd, sta->addr, | |
2580 | HOSTAPD_MODULE_IEEE80211, HOSTAPD_LEVEL_NOTICE, | |
2581 | "Could not %s STA to kernel driver", | |
2582 | sta->added_unassoc ? "set" : "add"); | |
2583 | ||
2584 | if (sta->added_unassoc) { | |
2585 | hostapd_drv_sta_remove(hapd, sta->addr); | |
2586 | sta->added_unassoc = 0; | |
2587 | } | |
2588 | ||
2589 | return -1; | |
2590 | } | |
2591 | ||
2592 | sta->added_unassoc = 0; | |
2593 | ||
2594 | return 0; | |
2595 | } | |
2596 | ||
2597 | ||
2598 | static u16 send_assoc_resp(struct hostapd_data *hapd, struct sta_info *sta, | |
2599 | const u8 *addr, u16 status_code, int reassoc, | |
2600 | const u8 *ies, size_t ies_len) | |
2601 | { | |
2602 | int send_len; | |
2603 | u8 *buf; | |
2604 | size_t buflen; | |
2605 | struct ieee80211_mgmt *reply; | |
2606 | u8 *p; | |
2607 | u16 res = WLAN_STATUS_SUCCESS; | |
2608 | ||
2609 | buflen = sizeof(struct ieee80211_mgmt) + 1024; | |
2610 | #ifdef CONFIG_FILS | |
2611 | if (sta && sta->fils_hlp_resp) | |
2612 | buflen += wpabuf_len(sta->fils_hlp_resp); | |
2613 | #endif /* CONFIG_FILS */ | |
2614 | #ifdef CONFIG_OWE | |
2615 | if (sta && (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_OWE)) | |
2616 | buflen += 50; | |
2617 | #endif /* CONFIG_OWE */ | |
2618 | buf = os_zalloc(buflen); | |
2619 | if (!buf) { | |
2620 | res = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
2621 | goto done; | |
2622 | } | |
2623 | reply = (struct ieee80211_mgmt *) buf; | |
2624 | reply->frame_control = | |
2625 | IEEE80211_FC(WLAN_FC_TYPE_MGMT, | |
2626 | (reassoc ? WLAN_FC_STYPE_REASSOC_RESP : | |
2627 | WLAN_FC_STYPE_ASSOC_RESP)); | |
2628 | os_memcpy(reply->da, addr, ETH_ALEN); | |
2629 | os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN); | |
2630 | os_memcpy(reply->bssid, hapd->own_addr, ETH_ALEN); | |
2631 | ||
2632 | send_len = IEEE80211_HDRLEN; | |
2633 | send_len += sizeof(reply->u.assoc_resp); | |
2634 | reply->u.assoc_resp.capab_info = | |
2635 | host_to_le16(hostapd_own_capab_info(hapd)); | |
2636 | reply->u.assoc_resp.status_code = host_to_le16(status_code); | |
2637 | ||
2638 | reply->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0) | | |
2639 | BIT(14) | BIT(15)); | |
2640 | /* Supported rates */ | |
2641 | p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable); | |
2642 | /* Extended supported rates */ | |
2643 | p = hostapd_eid_ext_supp_rates(hapd, p); | |
2644 | ||
2645 | #ifdef CONFIG_IEEE80211R_AP | |
2646 | if (sta && status_code == WLAN_STATUS_SUCCESS) { | |
2647 | /* IEEE 802.11r: Mobility Domain Information, Fast BSS | |
2648 | * Transition Information, RSN, [RIC Response] */ | |
2649 | p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p, | |
2650 | buf + buflen - p, | |
2651 | sta->auth_alg, ies, ies_len); | |
2652 | } | |
2653 | #endif /* CONFIG_IEEE80211R_AP */ | |
2654 | ||
2655 | #ifdef CONFIG_IEEE80211W | |
2656 | if (sta && status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY) | |
2657 | p = hostapd_eid_assoc_comeback_time(hapd, sta, p); | |
2658 | #endif /* CONFIG_IEEE80211W */ | |
2659 | ||
2660 | #ifdef CONFIG_IEEE80211N | |
2661 | p = hostapd_eid_ht_capabilities(hapd, p); | |
2662 | p = hostapd_eid_ht_operation(hapd, p); | |
2663 | #endif /* CONFIG_IEEE80211N */ | |
2664 | ||
2665 | #ifdef CONFIG_IEEE80211AC | |
2666 | if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) { | |
2667 | u32 nsts = 0, sta_nsts; | |
2668 | ||
2669 | if (sta && hapd->conf->use_sta_nsts && sta->vht_capabilities) { | |
2670 | struct ieee80211_vht_capabilities *capa; | |
2671 | ||
2672 | nsts = (hapd->iface->conf->vht_capab >> | |
2673 | VHT_CAP_BEAMFORMEE_STS_OFFSET) & 7; | |
2674 | capa = sta->vht_capabilities; | |
2675 | sta_nsts = (le_to_host32(capa->vht_capabilities_info) >> | |
2676 | VHT_CAP_BEAMFORMEE_STS_OFFSET) & 7; | |
2677 | ||
2678 | if (nsts < sta_nsts) | |
2679 | nsts = 0; | |
2680 | else | |
2681 | nsts = sta_nsts; | |
2682 | } | |
2683 | p = hostapd_eid_vht_capabilities(hapd, p, nsts); | |
2684 | p = hostapd_eid_vht_operation(hapd, p); | |
2685 | } | |
2686 | #endif /* CONFIG_IEEE80211AC */ | |
2687 | ||
2688 | p = hostapd_eid_ext_capab(hapd, p); | |
2689 | p = hostapd_eid_bss_max_idle_period(hapd, p); | |
2690 | if (sta && sta->qos_map_enabled) | |
2691 | p = hostapd_eid_qos_map_set(hapd, p); | |
2692 | ||
2693 | #ifdef CONFIG_FST | |
2694 | if (hapd->iface->fst_ies) { | |
2695 | os_memcpy(p, wpabuf_head(hapd->iface->fst_ies), | |
2696 | wpabuf_len(hapd->iface->fst_ies)); | |
2697 | p += wpabuf_len(hapd->iface->fst_ies); | |
2698 | } | |
2699 | #endif /* CONFIG_FST */ | |
2700 | ||
2701 | #ifdef CONFIG_IEEE80211AC | |
2702 | if (sta && hapd->conf->vendor_vht && (sta->flags & WLAN_STA_VENDOR_VHT)) | |
2703 | p = hostapd_eid_vendor_vht(hapd, p); | |
2704 | #endif /* CONFIG_IEEE80211AC */ | |
2705 | ||
2706 | if (sta && (sta->flags & WLAN_STA_WMM)) | |
2707 | p = hostapd_eid_wmm(hapd, p); | |
2708 | ||
2709 | #ifdef CONFIG_WPS | |
2710 | if (sta && | |
2711 | ((sta->flags & WLAN_STA_WPS) || | |
2712 | ((sta->flags & WLAN_STA_MAYBE_WPS) && hapd->conf->wpa))) { | |
2713 | struct wpabuf *wps = wps_build_assoc_resp_ie(); | |
2714 | if (wps) { | |
2715 | os_memcpy(p, wpabuf_head(wps), wpabuf_len(wps)); | |
2716 | p += wpabuf_len(wps); | |
2717 | wpabuf_free(wps); | |
2718 | } | |
2719 | } | |
2720 | #endif /* CONFIG_WPS */ | |
2721 | ||
2722 | #ifdef CONFIG_P2P | |
2723 | if (sta && sta->p2p_ie && hapd->p2p_group) { | |
2724 | struct wpabuf *p2p_resp_ie; | |
2725 | enum p2p_status_code status; | |
2726 | switch (status_code) { | |
2727 | case WLAN_STATUS_SUCCESS: | |
2728 | status = P2P_SC_SUCCESS; | |
2729 | break; | |
2730 | case WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA: | |
2731 | status = P2P_SC_FAIL_LIMIT_REACHED; | |
2732 | break; | |
2733 | default: | |
2734 | status = P2P_SC_FAIL_INVALID_PARAMS; | |
2735 | break; | |
2736 | } | |
2737 | p2p_resp_ie = p2p_group_assoc_resp_ie(hapd->p2p_group, status); | |
2738 | if (p2p_resp_ie) { | |
2739 | os_memcpy(p, wpabuf_head(p2p_resp_ie), | |
2740 | wpabuf_len(p2p_resp_ie)); | |
2741 | p += wpabuf_len(p2p_resp_ie); | |
2742 | wpabuf_free(p2p_resp_ie); | |
2743 | } | |
2744 | } | |
2745 | #endif /* CONFIG_P2P */ | |
2746 | ||
2747 | #ifdef CONFIG_P2P_MANAGER | |
2748 | if (hapd->conf->p2p & P2P_MANAGE) | |
2749 | p = hostapd_eid_p2p_manage(hapd, p); | |
2750 | #endif /* CONFIG_P2P_MANAGER */ | |
2751 | ||
2752 | p = hostapd_eid_mbo(hapd, p, buf + buflen - p); | |
2753 | ||
2754 | if (hapd->conf->assocresp_elements && | |
2755 | (size_t) (buf + buflen - p) >= | |
2756 | wpabuf_len(hapd->conf->assocresp_elements)) { | |
2757 | os_memcpy(p, wpabuf_head(hapd->conf->assocresp_elements), | |
2758 | wpabuf_len(hapd->conf->assocresp_elements)); | |
2759 | p += wpabuf_len(hapd->conf->assocresp_elements); | |
2760 | } | |
2761 | ||
2762 | send_len += p - reply->u.assoc_resp.variable; | |
2763 | ||
2764 | #ifdef CONFIG_FILS | |
2765 | if (sta && | |
2766 | (sta->auth_alg == WLAN_AUTH_FILS_SK || | |
2767 | sta->auth_alg == WLAN_AUTH_FILS_SK_PFS || | |
2768 | sta->auth_alg == WLAN_AUTH_FILS_PK) && | |
2769 | status_code == WLAN_STATUS_SUCCESS) { | |
2770 | struct ieee802_11_elems elems; | |
2771 | ||
2772 | if (ieee802_11_parse_elems(ies, ies_len, &elems, 0) == | |
2773 | ParseFailed || !elems.fils_session) { | |
2774 | res = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
2775 | goto done; | |
2776 | } | |
2777 | ||
2778 | /* FILS Session */ | |
2779 | *p++ = WLAN_EID_EXTENSION; /* Element ID */ | |
2780 | *p++ = 1 + FILS_SESSION_LEN; /* Length */ | |
2781 | *p++ = WLAN_EID_EXT_FILS_SESSION; /* Element ID Extension */ | |
2782 | os_memcpy(p, elems.fils_session, FILS_SESSION_LEN); | |
2783 | send_len += 2 + 1 + FILS_SESSION_LEN; | |
2784 | ||
2785 | send_len = fils_encrypt_assoc(sta->wpa_sm, buf, send_len, | |
2786 | buflen, sta->fils_hlp_resp); | |
2787 | if (send_len < 0) { | |
2788 | res = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
2789 | goto done; | |
2790 | } | |
2791 | } | |
2792 | #endif /* CONFIG_FILS */ | |
2793 | ||
2794 | #ifdef CONFIG_OWE | |
2795 | if ((hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_OWE) && | |
2796 | sta && sta->owe_ecdh && | |
2797 | wpa_auth_sta_key_mgmt(sta->wpa_sm) == WPA_KEY_MGMT_OWE) { | |
2798 | struct wpabuf *pub; | |
2799 | ||
2800 | pub = crypto_ecdh_get_pubkey(sta->owe_ecdh, 0); | |
2801 | if (!pub) { | |
2802 | res = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
2803 | goto done; | |
2804 | } | |
2805 | /* OWE Diffie-Hellman Parameter element */ | |
2806 | *p++ = WLAN_EID_EXTENSION; /* Element ID */ | |
2807 | *p++ = 1 + 2 + wpabuf_len(pub); /* Length */ | |
2808 | *p++ = WLAN_EID_EXT_OWE_DH_PARAM; /* Element ID Extension */ | |
2809 | WPA_PUT_LE16(p, OWE_DH_GROUP); | |
2810 | p += 2; | |
2811 | os_memcpy(p, wpabuf_head(pub), wpabuf_len(pub)); | |
2812 | p += wpabuf_len(pub); | |
2813 | send_len += 3 + 2 + wpabuf_len(pub); | |
2814 | wpabuf_free(pub); | |
2815 | } | |
2816 | #endif /* CONFIG_OWE */ | |
2817 | ||
2818 | if (hostapd_drv_send_mlme(hapd, reply, send_len, 0) < 0) { | |
2819 | wpa_printf(MSG_INFO, "Failed to send assoc resp: %s", | |
2820 | strerror(errno)); | |
2821 | res = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
2822 | } | |
2823 | ||
2824 | done: | |
2825 | os_free(buf); | |
2826 | return res; | |
2827 | } | |
2828 | ||
2829 | ||
2830 | #ifdef CONFIG_FILS | |
2831 | ||
2832 | void fils_hlp_finish_assoc(struct hostapd_data *hapd, struct sta_info *sta) | |
2833 | { | |
2834 | u16 reply_res; | |
2835 | ||
2836 | wpa_printf(MSG_DEBUG, "FILS: Finish association with " MACSTR, | |
2837 | MAC2STR(sta->addr)); | |
2838 | eloop_cancel_timeout(fils_hlp_timeout, hapd, sta); | |
2839 | if (!sta->fils_pending_assoc_req) | |
2840 | return; | |
2841 | reply_res = send_assoc_resp(hapd, sta, sta->addr, WLAN_STATUS_SUCCESS, | |
2842 | sta->fils_pending_assoc_is_reassoc, | |
2843 | sta->fils_pending_assoc_req, | |
2844 | sta->fils_pending_assoc_req_len); | |
2845 | os_free(sta->fils_pending_assoc_req); | |
2846 | sta->fils_pending_assoc_req = NULL; | |
2847 | sta->fils_pending_assoc_req_len = 0; | |
2848 | wpabuf_free(sta->fils_hlp_resp); | |
2849 | sta->fils_hlp_resp = NULL; | |
2850 | wpabuf_free(sta->hlp_dhcp_discover); | |
2851 | sta->hlp_dhcp_discover = NULL; | |
2852 | ||
2853 | /* | |
2854 | * Remove the station in case tranmission of a success response fails | |
2855 | * (the STA was added associated to the driver) or if the station was | |
2856 | * previously added unassociated. | |
2857 | */ | |
2858 | if (reply_res != WLAN_STATUS_SUCCESS || sta->added_unassoc) { | |
2859 | hostapd_drv_sta_remove(hapd, sta->addr); | |
2860 | sta->added_unassoc = 0; | |
2861 | } | |
2862 | } | |
2863 | ||
2864 | ||
2865 | void fils_hlp_timeout(void *eloop_ctx, void *eloop_data) | |
2866 | { | |
2867 | struct hostapd_data *hapd = eloop_ctx; | |
2868 | struct sta_info *sta = eloop_data; | |
2869 | ||
2870 | wpa_printf(MSG_DEBUG, | |
2871 | "FILS: HLP response timeout - continue with association response for " | |
2872 | MACSTR, MAC2STR(sta->addr)); | |
2873 | if (sta->fils_drv_assoc_finish) | |
2874 | hostapd_notify_assoc_fils_finish(hapd, sta); | |
2875 | else | |
2876 | fils_hlp_finish_assoc(hapd, sta); | |
2877 | } | |
2878 | ||
2879 | #endif /* CONFIG_FILS */ | |
2880 | ||
2881 | ||
2882 | static void handle_assoc(struct hostapd_data *hapd, | |
2883 | const struct ieee80211_mgmt *mgmt, size_t len, | |
2884 | int reassoc) | |
2885 | { | |
2886 | u16 capab_info, listen_interval, seq_ctrl, fc; | |
2887 | u16 resp = WLAN_STATUS_SUCCESS, reply_res; | |
2888 | const u8 *pos; | |
2889 | int left, i; | |
2890 | struct sta_info *sta; | |
2891 | u8 *tmp = NULL; | |
2892 | struct hostapd_sta_wpa_psk_short *psk = NULL; | |
2893 | char *identity = NULL; | |
2894 | char *radius_cui = NULL; | |
2895 | #ifdef CONFIG_FILS | |
2896 | int delay_assoc = 0; | |
2897 | #endif /* CONFIG_FILS */ | |
2898 | ||
2899 | if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) : | |
2900 | sizeof(mgmt->u.assoc_req))) { | |
2901 | wpa_printf(MSG_INFO, "handle_assoc(reassoc=%d) - too short payload (len=%lu)", | |
2902 | reassoc, (unsigned long) len); | |
2903 | return; | |
2904 | } | |
2905 | ||
2906 | #ifdef CONFIG_TESTING_OPTIONS | |
2907 | if (reassoc) { | |
2908 | if (hapd->iconf->ignore_reassoc_probability > 0.0 && | |
2909 | drand48() < hapd->iconf->ignore_reassoc_probability) { | |
2910 | wpa_printf(MSG_INFO, | |
2911 | "TESTING: ignoring reassoc request from " | |
2912 | MACSTR, MAC2STR(mgmt->sa)); | |
2913 | return; | |
2914 | } | |
2915 | } else { | |
2916 | if (hapd->iconf->ignore_assoc_probability > 0.0 && | |
2917 | drand48() < hapd->iconf->ignore_assoc_probability) { | |
2918 | wpa_printf(MSG_INFO, | |
2919 | "TESTING: ignoring assoc request from " | |
2920 | MACSTR, MAC2STR(mgmt->sa)); | |
2921 | return; | |
2922 | } | |
2923 | } | |
2924 | #endif /* CONFIG_TESTING_OPTIONS */ | |
2925 | ||
2926 | fc = le_to_host16(mgmt->frame_control); | |
2927 | seq_ctrl = le_to_host16(mgmt->seq_ctrl); | |
2928 | ||
2929 | if (reassoc) { | |
2930 | capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info); | |
2931 | listen_interval = le_to_host16( | |
2932 | mgmt->u.reassoc_req.listen_interval); | |
2933 | wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR | |
2934 | " capab_info=0x%02x listen_interval=%d current_ap=" | |
2935 | MACSTR " seq_ctrl=0x%x%s", | |
2936 | MAC2STR(mgmt->sa), capab_info, listen_interval, | |
2937 | MAC2STR(mgmt->u.reassoc_req.current_ap), | |
2938 | seq_ctrl, (fc & WLAN_FC_RETRY) ? " retry" : ""); | |
2939 | left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req)); | |
2940 | pos = mgmt->u.reassoc_req.variable; | |
2941 | } else { | |
2942 | capab_info = le_to_host16(mgmt->u.assoc_req.capab_info); | |
2943 | listen_interval = le_to_host16( | |
2944 | mgmt->u.assoc_req.listen_interval); | |
2945 | wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR | |
2946 | " capab_info=0x%02x listen_interval=%d " | |
2947 | "seq_ctrl=0x%x%s", | |
2948 | MAC2STR(mgmt->sa), capab_info, listen_interval, | |
2949 | seq_ctrl, (fc & WLAN_FC_RETRY) ? " retry" : ""); | |
2950 | left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req)); | |
2951 | pos = mgmt->u.assoc_req.variable; | |
2952 | } | |
2953 | ||
2954 | sta = ap_get_sta(hapd, mgmt->sa); | |
2955 | #ifdef CONFIG_IEEE80211R_AP | |
2956 | if (sta && sta->auth_alg == WLAN_AUTH_FT && | |
2957 | (sta->flags & WLAN_STA_AUTH) == 0) { | |
2958 | wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate " | |
2959 | "prior to authentication since it is using " | |
2960 | "over-the-DS FT", MAC2STR(mgmt->sa)); | |
2961 | ||
2962 | /* | |
2963 | * Mark station as authenticated, to avoid adding station | |
2964 | * entry in the driver as associated and not authenticated | |
2965 | */ | |
2966 | sta->flags |= WLAN_STA_AUTH; | |
2967 | } else | |
2968 | #endif /* CONFIG_IEEE80211R_AP */ | |
2969 | if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) { | |
2970 | if (hapd->iface->current_mode && | |
2971 | hapd->iface->current_mode->mode == | |
2972 | HOSTAPD_MODE_IEEE80211AD) { | |
2973 | int acl_res; | |
2974 | u32 session_timeout, acct_interim_interval; | |
2975 | struct vlan_description vlan_id; | |
2976 | ||
2977 | acl_res = ieee802_11_allowed_address( | |
2978 | hapd, mgmt->sa, (const u8 *) mgmt, len, | |
2979 | &session_timeout, &acct_interim_interval, | |
2980 | &vlan_id, &psk, &identity, &radius_cui); | |
2981 | if (acl_res == HOSTAPD_ACL_REJECT) { | |
2982 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
2983 | goto fail; | |
2984 | } | |
2985 | if (acl_res == HOSTAPD_ACL_PENDING) | |
2986 | return; | |
2987 | ||
2988 | /* DMG/IEEE 802.11ad does not use authentication. | |
2989 | * Allocate sta entry upon association. */ | |
2990 | sta = ap_sta_add(hapd, mgmt->sa); | |
2991 | if (!sta) { | |
2992 | hostapd_logger(hapd, mgmt->sa, | |
2993 | HOSTAPD_MODULE_IEEE80211, | |
2994 | HOSTAPD_LEVEL_INFO, | |
2995 | "Failed to add STA"); | |
2996 | resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA; | |
2997 | goto fail; | |
2998 | } | |
2999 | ||
3000 | acl_res = ieee802_11_set_radius_info( | |
3001 | hapd, sta, acl_res, session_timeout, | |
3002 | acct_interim_interval, &vlan_id, &psk, | |
3003 | &identity, &radius_cui); | |
3004 | if (acl_res) { | |
3005 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
3006 | goto fail; | |
3007 | } | |
3008 | ||
3009 | hostapd_logger(hapd, sta->addr, | |
3010 | HOSTAPD_MODULE_IEEE80211, | |
3011 | HOSTAPD_LEVEL_DEBUG, | |
3012 | "Skip authentication for DMG/IEEE 802.11ad"); | |
3013 | sta->flags |= WLAN_STA_AUTH; | |
3014 | wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH); | |
3015 | sta->auth_alg = WLAN_AUTH_OPEN; | |
3016 | } else { | |
3017 | hostapd_logger(hapd, mgmt->sa, | |
3018 | HOSTAPD_MODULE_IEEE80211, | |
3019 | HOSTAPD_LEVEL_INFO, | |
3020 | "Station tried to associate before authentication (aid=%d flags=0x%x)", | |
3021 | sta ? sta->aid : -1, | |
3022 | sta ? sta->flags : 0); | |
3023 | send_deauth(hapd, mgmt->sa, | |
3024 | WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA); | |
3025 | return; | |
3026 | } | |
3027 | } | |
3028 | ||
3029 | if ((fc & WLAN_FC_RETRY) && | |
3030 | sta->last_seq_ctrl != WLAN_INVALID_MGMT_SEQ && | |
3031 | sta->last_seq_ctrl == seq_ctrl && | |
3032 | sta->last_subtype == (reassoc ? WLAN_FC_STYPE_REASSOC_REQ : | |
3033 | WLAN_FC_STYPE_ASSOC_REQ)) { | |
3034 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
3035 | HOSTAPD_LEVEL_DEBUG, | |
3036 | "Drop repeated association frame seq_ctrl=0x%x", | |
3037 | seq_ctrl); | |
3038 | return; | |
3039 | } | |
3040 | sta->last_seq_ctrl = seq_ctrl; | |
3041 | sta->last_subtype = reassoc ? WLAN_FC_STYPE_REASSOC_REQ : | |
3042 | WLAN_FC_STYPE_ASSOC_REQ; | |
3043 | ||
3044 | if (hapd->tkip_countermeasures) { | |
3045 | resp = WLAN_REASON_MICHAEL_MIC_FAILURE; | |
3046 | goto fail; | |
3047 | } | |
3048 | ||
3049 | if (listen_interval > hapd->conf->max_listen_interval) { | |
3050 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
3051 | HOSTAPD_LEVEL_DEBUG, | |
3052 | "Too large Listen Interval (%d)", | |
3053 | listen_interval); | |
3054 | resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE; | |
3055 | goto fail; | |
3056 | } | |
3057 | ||
3058 | #ifdef CONFIG_MBO | |
3059 | if (hapd->conf->mbo_enabled && hapd->mbo_assoc_disallow) { | |
3060 | resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA; | |
3061 | goto fail; | |
3062 | } | |
3063 | #endif /* CONFIG_MBO */ | |
3064 | ||
3065 | /* | |
3066 | * sta->capability is used in check_assoc_ies() for RRM enabled | |
3067 | * capability element. | |
3068 | */ | |
3069 | sta->capability = capab_info; | |
3070 | ||
3071 | #ifdef CONFIG_FILS | |
3072 | if (sta->auth_alg == WLAN_AUTH_FILS_SK || | |
3073 | sta->auth_alg == WLAN_AUTH_FILS_SK_PFS || | |
3074 | sta->auth_alg == WLAN_AUTH_FILS_PK) { | |
3075 | /* The end of the payload is encrypted. Need to decrypt it | |
3076 | * before parsing. */ | |
3077 | ||
3078 | tmp = os_memdup(pos, left); | |
3079 | if (!tmp) { | |
3080 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
3081 | goto fail; | |
3082 | } | |
3083 | ||
3084 | left = fils_decrypt_assoc(sta->wpa_sm, sta->fils_session, mgmt, | |
3085 | len, tmp, left); | |
3086 | if (left < 0) { | |
3087 | resp = WLAN_STATUS_UNSPECIFIED_FAILURE; | |
3088 | goto fail; | |
3089 | } | |
3090 | pos = tmp; | |
3091 | } | |
3092 | #endif /* CONFIG_FILS */ | |
3093 | ||
3094 | /* followed by SSID and Supported rates; and HT capabilities if 802.11n | |
3095 | * is used */ | |
3096 | resp = check_assoc_ies(hapd, sta, pos, left, reassoc); | |
3097 | if (resp != WLAN_STATUS_SUCCESS) | |
3098 | goto fail; | |
3099 | ||
3100 | if (hostapd_get_aid(hapd, sta) < 0) { | |
3101 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
3102 | HOSTAPD_LEVEL_INFO, "No room for more AIDs"); | |
3103 | resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA; | |
3104 | goto fail; | |
3105 | } | |
3106 | ||
3107 | sta->listen_interval = listen_interval; | |
3108 | ||
3109 | if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G) | |
3110 | sta->flags |= WLAN_STA_NONERP; | |
3111 | for (i = 0; i < sta->supported_rates_len; i++) { | |
3112 | if ((sta->supported_rates[i] & 0x7f) > 22) { | |
3113 | sta->flags &= ~WLAN_STA_NONERP; | |
3114 | break; | |
3115 | } | |
3116 | } | |
3117 | if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) { | |
3118 | sta->nonerp_set = 1; | |
3119 | hapd->iface->num_sta_non_erp++; | |
3120 | if (hapd->iface->num_sta_non_erp == 1) | |
3121 | ieee802_11_set_beacons(hapd->iface); | |
3122 | } | |
3123 | ||
3124 | if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) && | |
3125 | !sta->no_short_slot_time_set) { | |
3126 | sta->no_short_slot_time_set = 1; | |
3127 | hapd->iface->num_sta_no_short_slot_time++; | |
3128 | if (hapd->iface->current_mode->mode == | |
3129 | HOSTAPD_MODE_IEEE80211G && | |
3130 | hapd->iface->num_sta_no_short_slot_time == 1) | |
3131 | ieee802_11_set_beacons(hapd->iface); | |
3132 | } | |
3133 | ||
3134 | if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) | |
3135 | sta->flags |= WLAN_STA_SHORT_PREAMBLE; | |
3136 | else | |
3137 | sta->flags &= ~WLAN_STA_SHORT_PREAMBLE; | |
3138 | ||
3139 | if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) && | |
3140 | !sta->no_short_preamble_set) { | |
3141 | sta->no_short_preamble_set = 1; | |
3142 | hapd->iface->num_sta_no_short_preamble++; | |
3143 | if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G | |
3144 | && hapd->iface->num_sta_no_short_preamble == 1) | |
3145 | ieee802_11_set_beacons(hapd->iface); | |
3146 | } | |
3147 | ||
3148 | #ifdef CONFIG_IEEE80211N | |
3149 | update_ht_state(hapd, sta); | |
3150 | #endif /* CONFIG_IEEE80211N */ | |
3151 | ||
3152 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
3153 | HOSTAPD_LEVEL_DEBUG, | |
3154 | "association OK (aid %d)", sta->aid); | |
3155 | /* Station will be marked associated, after it acknowledges AssocResp | |
3156 | */ | |
3157 | sta->flags |= WLAN_STA_ASSOC_REQ_OK; | |
3158 | ||
3159 | #ifdef CONFIG_IEEE80211W | |
3160 | if ((sta->flags & WLAN_STA_MFP) && sta->sa_query_timed_out) { | |
3161 | wpa_printf(MSG_DEBUG, "Allowing %sassociation after timed out " | |
3162 | "SA Query procedure", reassoc ? "re" : ""); | |
3163 | /* TODO: Send a protected Disassociate frame to the STA using | |
3164 | * the old key and Reason Code "Previous Authentication no | |
3165 | * longer valid". Make sure this is only sent protected since | |
3166 | * unprotected frame would be received by the STA that is now | |
3167 | * trying to associate. | |
3168 | */ | |
3169 | } | |
3170 | #endif /* CONFIG_IEEE80211W */ | |
3171 | ||
3172 | /* Make sure that the previously registered inactivity timer will not | |
3173 | * remove the STA immediately. */ | |
3174 | sta->timeout_next = STA_NULLFUNC; | |
3175 | ||
3176 | #ifdef CONFIG_TAXONOMY | |
3177 | taxonomy_sta_info_assoc_req(hapd, sta, pos, left); | |
3178 | #endif /* CONFIG_TAXONOMY */ | |
3179 | ||
3180 | sta->pending_wds_enable = 0; | |
3181 | ||
3182 | #ifdef CONFIG_FILS | |
3183 | if (sta->auth_alg == WLAN_AUTH_FILS_SK || | |
3184 | sta->auth_alg == WLAN_AUTH_FILS_SK_PFS || | |
3185 | sta->auth_alg == WLAN_AUTH_FILS_PK) { | |
3186 | if (fils_process_hlp(hapd, sta, pos, left) > 0) | |
3187 | delay_assoc = 1; | |
3188 | } | |
3189 | #endif /* CONFIG_FILS */ | |
3190 | ||
3191 | fail: | |
3192 | os_free(identity); | |
3193 | os_free(radius_cui); | |
3194 | hostapd_free_psk_list(psk); | |
3195 | ||
3196 | /* | |
3197 | * In case of a successful response, add the station to the driver. | |
3198 | * Otherwise, the kernel may ignore Data frames before we process the | |
3199 | * ACK frame (TX status). In case of a failure, this station will be | |
3200 | * removed. | |
3201 | * | |
3202 | * Note that this is not compliant with the IEEE 802.11 standard that | |
3203 | * states that a non-AP station should transition into the | |
3204 | * authenticated/associated state only after the station acknowledges | |
3205 | * the (Re)Association Response frame. However, still do this as: | |
3206 | * | |
3207 | * 1. In case the station does not acknowledge the (Re)Association | |
3208 | * Response frame, it will be removed. | |
3209 | * 2. Data frames will be dropped in the kernel until the station is | |
3210 | * set into authorized state, and there are no significant known | |
3211 | * issues with processing other non-Data Class 3 frames during this | |
3212 | * window. | |
3213 | */ | |
3214 | if (resp == WLAN_STATUS_SUCCESS && sta && add_associated_sta(hapd, sta)) | |
3215 | resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA; | |
3216 | ||
3217 | #ifdef CONFIG_FILS | |
3218 | if (sta) { | |
3219 | eloop_cancel_timeout(fils_hlp_timeout, hapd, sta); | |
3220 | os_free(sta->fils_pending_assoc_req); | |
3221 | sta->fils_pending_assoc_req = NULL; | |
3222 | sta->fils_pending_assoc_req_len = 0; | |
3223 | wpabuf_free(sta->fils_hlp_resp); | |
3224 | sta->fils_hlp_resp = NULL; | |
3225 | } | |
3226 | if (sta && delay_assoc && resp == WLAN_STATUS_SUCCESS) { | |
3227 | sta->fils_pending_assoc_req = tmp; | |
3228 | sta->fils_pending_assoc_req_len = left; | |
3229 | sta->fils_pending_assoc_is_reassoc = reassoc; | |
3230 | sta->fils_drv_assoc_finish = 0; | |
3231 | wpa_printf(MSG_DEBUG, | |
3232 | "FILS: Waiting for HLP processing before sending (Re)Association Response frame to " | |
3233 | MACSTR, MAC2STR(sta->addr)); | |
3234 | eloop_cancel_timeout(fils_hlp_timeout, hapd, sta); | |
3235 | eloop_register_timeout(0, hapd->conf->fils_hlp_wait_time * 1024, | |
3236 | fils_hlp_timeout, hapd, sta); | |
3237 | return; | |
3238 | } | |
3239 | #endif /* CONFIG_FILS */ | |
3240 | ||
3241 | reply_res = send_assoc_resp(hapd, sta, mgmt->sa, resp, reassoc, pos, | |
3242 | left); | |
3243 | os_free(tmp); | |
3244 | ||
3245 | /* | |
3246 | * Remove the station in case tranmission of a success response fails | |
3247 | * (the STA was added associated to the driver) or if the station was | |
3248 | * previously added unassociated. | |
3249 | */ | |
3250 | if (sta && ((reply_res != WLAN_STATUS_SUCCESS && | |
3251 | resp == WLAN_STATUS_SUCCESS) || sta->added_unassoc)) { | |
3252 | hostapd_drv_sta_remove(hapd, sta->addr); | |
3253 | sta->added_unassoc = 0; | |
3254 | } | |
3255 | } | |
3256 | ||
3257 | ||
3258 | static void handle_disassoc(struct hostapd_data *hapd, | |
3259 | const struct ieee80211_mgmt *mgmt, size_t len) | |
3260 | { | |
3261 | struct sta_info *sta; | |
3262 | ||
3263 | if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) { | |
3264 | wpa_printf(MSG_INFO, "handle_disassoc - too short payload (len=%lu)", | |
3265 | (unsigned long) len); | |
3266 | return; | |
3267 | } | |
3268 | ||
3269 | wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d", | |
3270 | MAC2STR(mgmt->sa), | |
3271 | le_to_host16(mgmt->u.disassoc.reason_code)); | |
3272 | ||
3273 | sta = ap_get_sta(hapd, mgmt->sa); | |
3274 | if (sta == NULL) { | |
3275 | wpa_printf(MSG_INFO, "Station " MACSTR " trying to disassociate, but it is not associated", | |
3276 | MAC2STR(mgmt->sa)); | |
3277 | return; | |
3278 | } | |
3279 | ||
3280 | ap_sta_set_authorized(hapd, sta, 0); | |
3281 | sta->last_seq_ctrl = WLAN_INVALID_MGMT_SEQ; | |
3282 | sta->flags &= ~(WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK); | |
3283 | wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC); | |
3284 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
3285 | HOSTAPD_LEVEL_INFO, "disassociated"); | |
3286 | sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST; | |
3287 | ieee802_1x_notify_port_enabled(sta->eapol_sm, 0); | |
3288 | /* Stop Accounting and IEEE 802.1X sessions, but leave the STA | |
3289 | * authenticated. */ | |
3290 | accounting_sta_stop(hapd, sta); | |
3291 | ieee802_1x_free_station(hapd, sta); | |
3292 | if (sta->ipaddr) | |
3293 | hostapd_drv_br_delete_ip_neigh(hapd, 4, (u8 *) &sta->ipaddr); | |
3294 | ap_sta_ip6addr_del(hapd, sta); | |
3295 | hostapd_drv_sta_remove(hapd, sta->addr); | |
3296 | sta->added_unassoc = 0; | |
3297 | ||
3298 | if (sta->timeout_next == STA_NULLFUNC || | |
3299 | sta->timeout_next == STA_DISASSOC) { | |
3300 | sta->timeout_next = STA_DEAUTH; | |
3301 | eloop_cancel_timeout(ap_handle_timer, hapd, sta); | |
3302 | eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer, | |
3303 | hapd, sta); | |
3304 | } | |
3305 | ||
3306 | mlme_disassociate_indication( | |
3307 | hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code)); | |
3308 | ||
3309 | /* DMG/IEEE 802.11ad does not use deauthication. Deallocate sta upon | |
3310 | * disassociation. */ | |
3311 | if (hapd->iface->current_mode && | |
3312 | hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211AD) { | |
3313 | sta->flags &= ~WLAN_STA_AUTH; | |
3314 | wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH); | |
3315 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
3316 | HOSTAPD_LEVEL_DEBUG, "deauthenticated"); | |
3317 | ap_free_sta(hapd, sta); | |
3318 | } | |
3319 | } | |
3320 | ||
3321 | ||
3322 | static void handle_deauth(struct hostapd_data *hapd, | |
3323 | const struct ieee80211_mgmt *mgmt, size_t len) | |
3324 | { | |
3325 | struct sta_info *sta; | |
3326 | ||
3327 | if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) { | |
3328 | wpa_msg(hapd->msg_ctx, MSG_DEBUG, "handle_deauth - too short " | |
3329 | "payload (len=%lu)", (unsigned long) len); | |
3330 | return; | |
3331 | } | |
3332 | ||
3333 | wpa_msg(hapd->msg_ctx, MSG_DEBUG, "deauthentication: STA=" MACSTR | |
3334 | " reason_code=%d", | |
3335 | MAC2STR(mgmt->sa), le_to_host16(mgmt->u.deauth.reason_code)); | |
3336 | ||
3337 | sta = ap_get_sta(hapd, mgmt->sa); | |
3338 | if (sta == NULL) { | |
3339 | wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR " trying " | |
3340 | "to deauthenticate, but it is not authenticated", | |
3341 | MAC2STR(mgmt->sa)); | |
3342 | return; | |
3343 | } | |
3344 | ||
3345 | ap_sta_set_authorized(hapd, sta, 0); | |
3346 | sta->last_seq_ctrl = WLAN_INVALID_MGMT_SEQ; | |
3347 | sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC | | |
3348 | WLAN_STA_ASSOC_REQ_OK); | |
3349 | wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH); | |
3350 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
3351 | HOSTAPD_LEVEL_DEBUG, "deauthenticated"); | |
3352 | mlme_deauthenticate_indication( | |
3353 | hapd, sta, le_to_host16(mgmt->u.deauth.reason_code)); | |
3354 | sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST; | |
3355 | ieee802_1x_notify_port_enabled(sta->eapol_sm, 0); | |
3356 | ap_free_sta(hapd, sta); | |
3357 | } | |
3358 | ||
3359 | ||
3360 | static void handle_beacon(struct hostapd_data *hapd, | |
3361 | const struct ieee80211_mgmt *mgmt, size_t len, | |
3362 | struct hostapd_frame_info *fi) | |
3363 | { | |
3364 | struct ieee802_11_elems elems; | |
3365 | ||
3366 | if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) { | |
3367 | wpa_printf(MSG_INFO, "handle_beacon - too short payload (len=%lu)", | |
3368 | (unsigned long) len); | |
3369 | return; | |
3370 | } | |
3371 | ||
3372 | (void) ieee802_11_parse_elems(mgmt->u.beacon.variable, | |
3373 | len - (IEEE80211_HDRLEN + | |
3374 | sizeof(mgmt->u.beacon)), &elems, | |
3375 | 0); | |
3376 | ||
3377 | ap_list_process_beacon(hapd->iface, mgmt, &elems, fi); | |
3378 | } | |
3379 | ||
3380 | ||
3381 | #ifdef CONFIG_IEEE80211W | |
3382 | ||
3383 | static int hostapd_sa_query_action(struct hostapd_data *hapd, | |
3384 | const struct ieee80211_mgmt *mgmt, | |
3385 | size_t len) | |
3386 | { | |
3387 | const u8 *end; | |
3388 | ||
3389 | end = mgmt->u.action.u.sa_query_resp.trans_id + | |
3390 | WLAN_SA_QUERY_TR_ID_LEN; | |
3391 | if (((u8 *) mgmt) + len < end) { | |
3392 | wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short SA Query Action " | |
3393 | "frame (len=%lu)", (unsigned long) len); | |
3394 | return 0; | |
3395 | } | |
3396 | ||
3397 | ieee802_11_sa_query_action(hapd, mgmt->sa, | |
3398 | mgmt->u.action.u.sa_query_resp.action, | |
3399 | mgmt->u.action.u.sa_query_resp.trans_id); | |
3400 | return 1; | |
3401 | } | |
3402 | ||
3403 | ||
3404 | static int robust_action_frame(u8 category) | |
3405 | { | |
3406 | return category != WLAN_ACTION_PUBLIC && | |
3407 | category != WLAN_ACTION_HT; | |
3408 | } | |
3409 | #endif /* CONFIG_IEEE80211W */ | |
3410 | ||
3411 | ||
3412 | static int handle_action(struct hostapd_data *hapd, | |
3413 | const struct ieee80211_mgmt *mgmt, size_t len) | |
3414 | { | |
3415 | struct sta_info *sta; | |
3416 | sta = ap_get_sta(hapd, mgmt->sa); | |
3417 | ||
3418 | if (len < IEEE80211_HDRLEN + 1) { | |
3419 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
3420 | HOSTAPD_LEVEL_DEBUG, | |
3421 | "handle_action - too short payload (len=%lu)", | |
3422 | (unsigned long) len); | |
3423 | return 0; | |
3424 | } | |
3425 | ||
3426 | if (mgmt->u.action.category != WLAN_ACTION_PUBLIC && | |
3427 | (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))) { | |
3428 | wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored Action " | |
3429 | "frame (category=%u) from unassociated STA " MACSTR, | |
3430 | mgmt->u.action.category, MAC2STR(mgmt->sa)); | |
3431 | return 0; | |
3432 | } | |
3433 | ||
3434 | #ifdef CONFIG_IEEE80211W | |
3435 | if (sta && (sta->flags & WLAN_STA_MFP) && | |
3436 | !(mgmt->frame_control & host_to_le16(WLAN_FC_ISWEP)) && | |
3437 | robust_action_frame(mgmt->u.action.category)) { | |
3438 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
3439 | HOSTAPD_LEVEL_DEBUG, | |
3440 | "Dropped unprotected Robust Action frame from " | |
3441 | "an MFP STA"); | |
3442 | return 0; | |
3443 | } | |
3444 | #endif /* CONFIG_IEEE80211W */ | |
3445 | ||
3446 | if (sta) { | |
3447 | u16 fc = le_to_host16(mgmt->frame_control); | |
3448 | u16 seq_ctrl = le_to_host16(mgmt->seq_ctrl); | |
3449 | ||
3450 | if ((fc & WLAN_FC_RETRY) && | |
3451 | sta->last_seq_ctrl != WLAN_INVALID_MGMT_SEQ && | |
3452 | sta->last_seq_ctrl == seq_ctrl && | |
3453 | sta->last_subtype == WLAN_FC_STYPE_ACTION) { | |
3454 | hostapd_logger(hapd, sta->addr, | |
3455 | HOSTAPD_MODULE_IEEE80211, | |
3456 | HOSTAPD_LEVEL_DEBUG, | |
3457 | "Drop repeated action frame seq_ctrl=0x%x", | |
3458 | seq_ctrl); | |
3459 | return 1; | |
3460 | } | |
3461 | ||
3462 | sta->last_seq_ctrl = seq_ctrl; | |
3463 | sta->last_subtype = WLAN_FC_STYPE_ACTION; | |
3464 | } | |
3465 | ||
3466 | switch (mgmt->u.action.category) { | |
3467 | #ifdef CONFIG_IEEE80211R_AP | |
3468 | case WLAN_ACTION_FT: | |
3469 | if (!sta || | |
3470 | wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action, | |
3471 | len - IEEE80211_HDRLEN)) | |
3472 | break; | |
3473 | return 1; | |
3474 | #endif /* CONFIG_IEEE80211R_AP */ | |
3475 | case WLAN_ACTION_WMM: | |
3476 | hostapd_wmm_action(hapd, mgmt, len); | |
3477 | return 1; | |
3478 | #ifdef CONFIG_IEEE80211W | |
3479 | case WLAN_ACTION_SA_QUERY: | |
3480 | return hostapd_sa_query_action(hapd, mgmt, len); | |
3481 | #endif /* CONFIG_IEEE80211W */ | |
3482 | #ifdef CONFIG_WNM_AP | |
3483 | case WLAN_ACTION_WNM: | |
3484 | ieee802_11_rx_wnm_action_ap(hapd, mgmt, len); | |
3485 | return 1; | |
3486 | #endif /* CONFIG_WNM_AP */ | |
3487 | #ifdef CONFIG_FST | |
3488 | case WLAN_ACTION_FST: | |
3489 | if (hapd->iface->fst) | |
3490 | fst_rx_action(hapd->iface->fst, mgmt, len); | |
3491 | else | |
3492 | wpa_printf(MSG_DEBUG, | |
3493 | "FST: Ignore FST Action frame - no FST attached"); | |
3494 | return 1; | |
3495 | #endif /* CONFIG_FST */ | |
3496 | case WLAN_ACTION_PUBLIC: | |
3497 | case WLAN_ACTION_PROTECTED_DUAL: | |
3498 | #ifdef CONFIG_IEEE80211N | |
3499 | if (len >= IEEE80211_HDRLEN + 2 && | |
3500 | mgmt->u.action.u.public_action.action == | |
3501 | WLAN_PA_20_40_BSS_COEX) { | |
3502 | wpa_printf(MSG_DEBUG, | |
3503 | "HT20/40 coex mgmt frame received from STA " | |
3504 | MACSTR, MAC2STR(mgmt->sa)); | |
3505 | hostapd_2040_coex_action(hapd, mgmt, len); | |
3506 | return 1; | |
3507 | } | |
3508 | #endif /* CONFIG_IEEE80211N */ | |
3509 | #ifdef CONFIG_DPP | |
3510 | if (len >= IEEE80211_HDRLEN + 6 && | |
3511 | mgmt->u.action.u.vs_public_action.action == | |
3512 | WLAN_PA_VENDOR_SPECIFIC && | |
3513 | WPA_GET_BE24(mgmt->u.action.u.vs_public_action.oui) == | |
3514 | OUI_WFA && | |
3515 | mgmt->u.action.u.vs_public_action.variable[0] == | |
3516 | DPP_OUI_TYPE) { | |
3517 | const u8 *pos, *end; | |
3518 | ||
3519 | pos = &mgmt->u.action.u.vs_public_action.variable[1]; | |
3520 | end = ((const u8 *) mgmt) + len; | |
3521 | hostapd_dpp_rx_action(hapd, mgmt->sa, pos, end - pos, | |
3522 | hapd->iface->freq); | |
3523 | return 1; | |
3524 | } | |
3525 | if (len >= IEEE80211_HDRLEN + 2 && | |
3526 | (mgmt->u.action.u.public_action.action == | |
3527 | WLAN_PA_GAS_INITIAL_RESP || | |
3528 | mgmt->u.action.u.public_action.action == | |
3529 | WLAN_PA_GAS_COMEBACK_RESP)) { | |
3530 | const u8 *pos, *end; | |
3531 | ||
3532 | pos = &mgmt->u.action.u.public_action.action; | |
3533 | end = ((const u8 *) mgmt) + len; | |
3534 | gas_query_ap_rx(hapd->gas, mgmt->sa, | |
3535 | mgmt->u.action.category, | |
3536 | pos, end - pos, hapd->iface->freq); | |
3537 | return 1; | |
3538 | } | |
3539 | #endif /* CONFIG_DPP */ | |
3540 | if (hapd->public_action_cb) { | |
3541 | hapd->public_action_cb(hapd->public_action_cb_ctx, | |
3542 | (u8 *) mgmt, len, | |
3543 | hapd->iface->freq); | |
3544 | } | |
3545 | if (hapd->public_action_cb2) { | |
3546 | hapd->public_action_cb2(hapd->public_action_cb2_ctx, | |
3547 | (u8 *) mgmt, len, | |
3548 | hapd->iface->freq); | |
3549 | } | |
3550 | if (hapd->public_action_cb || hapd->public_action_cb2) | |
3551 | return 1; | |
3552 | break; | |
3553 | case WLAN_ACTION_VENDOR_SPECIFIC: | |
3554 | if (hapd->vendor_action_cb) { | |
3555 | if (hapd->vendor_action_cb(hapd->vendor_action_cb_ctx, | |
3556 | (u8 *) mgmt, len, | |
3557 | hapd->iface->freq) == 0) | |
3558 | return 1; | |
3559 | } | |
3560 | break; | |
3561 | case WLAN_ACTION_RADIO_MEASUREMENT: | |
3562 | hostapd_handle_radio_measurement(hapd, (const u8 *) mgmt, len); | |
3563 | return 1; | |
3564 | } | |
3565 | ||
3566 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
3567 | HOSTAPD_LEVEL_DEBUG, | |
3568 | "handle_action - unknown action category %d or invalid " | |
3569 | "frame", | |
3570 | mgmt->u.action.category); | |
3571 | if (!is_multicast_ether_addr(mgmt->da) && | |
3572 | !(mgmt->u.action.category & 0x80) && | |
3573 | !is_multicast_ether_addr(mgmt->sa)) { | |
3574 | struct ieee80211_mgmt *resp; | |
3575 | ||
3576 | /* | |
3577 | * IEEE 802.11-REVma/D9.0 - 7.3.1.11 | |
3578 | * Return the Action frame to the source without change | |
3579 | * except that MSB of the Category set to 1. | |
3580 | */ | |
3581 | wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action " | |
3582 | "frame back to sender"); | |
3583 | resp = os_memdup(mgmt, len); | |
3584 | if (resp == NULL) | |
3585 | return 0; | |
3586 | os_memcpy(resp->da, resp->sa, ETH_ALEN); | |
3587 | os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN); | |
3588 | os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN); | |
3589 | resp->u.action.category |= 0x80; | |
3590 | ||
3591 | if (hostapd_drv_send_mlme(hapd, resp, len, 0) < 0) { | |
3592 | wpa_printf(MSG_ERROR, "IEEE 802.11: Failed to send " | |
3593 | "Action frame"); | |
3594 | } | |
3595 | os_free(resp); | |
3596 | } | |
3597 | ||
3598 | return 1; | |
3599 | } | |
3600 | ||
3601 | ||
3602 | /** | |
3603 | * ieee802_11_mgmt - process incoming IEEE 802.11 management frames | |
3604 | * @hapd: hostapd BSS data structure (the BSS to which the management frame was | |
3605 | * sent to) | |
3606 | * @buf: management frame data (starting from IEEE 802.11 header) | |
3607 | * @len: length of frame data in octets | |
3608 | * @fi: meta data about received frame (signal level, etc.) | |
3609 | * | |
3610 | * Process all incoming IEEE 802.11 management frames. This will be called for | |
3611 | * each frame received from the kernel driver through wlan#ap interface. In | |
3612 | * addition, it can be called to re-inserted pending frames (e.g., when using | |
3613 | * external RADIUS server as an MAC ACL). | |
3614 | */ | |
3615 | int ieee802_11_mgmt(struct hostapd_data *hapd, const u8 *buf, size_t len, | |
3616 | struct hostapd_frame_info *fi) | |
3617 | { | |
3618 | struct ieee80211_mgmt *mgmt; | |
3619 | u16 fc, stype; | |
3620 | int ret = 0; | |
3621 | ||
3622 | if (len < 24) | |
3623 | return 0; | |
3624 | ||
3625 | mgmt = (struct ieee80211_mgmt *) buf; | |
3626 | fc = le_to_host16(mgmt->frame_control); | |
3627 | stype = WLAN_FC_GET_STYPE(fc); | |
3628 | ||
3629 | if (stype == WLAN_FC_STYPE_BEACON) { | |
3630 | handle_beacon(hapd, mgmt, len, fi); | |
3631 | return 1; | |
3632 | } | |
3633 | ||
3634 | if (!is_broadcast_ether_addr(mgmt->bssid) && | |
3635 | #ifdef CONFIG_P2P | |
3636 | /* Invitation responses can be sent with the peer MAC as BSSID */ | |
3637 | !((hapd->conf->p2p & P2P_GROUP_OWNER) && | |
3638 | stype == WLAN_FC_STYPE_ACTION) && | |
3639 | #endif /* CONFIG_P2P */ | |
3640 | #ifdef CONFIG_MESH | |
3641 | !(hapd->conf->mesh & MESH_ENABLED) && | |
3642 | #endif /* CONFIG_MESH */ | |
3643 | os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) { | |
3644 | wpa_printf(MSG_INFO, "MGMT: BSSID=" MACSTR " not our address", | |
3645 | MAC2STR(mgmt->bssid)); | |
3646 | return 0; | |
3647 | } | |
3648 | ||
3649 | ||
3650 | if (stype == WLAN_FC_STYPE_PROBE_REQ) { | |
3651 | handle_probe_req(hapd, mgmt, len, fi->ssi_signal); | |
3652 | return 1; | |
3653 | } | |
3654 | ||
3655 | if ((!is_broadcast_ether_addr(mgmt->da) || | |
3656 | stype != WLAN_FC_STYPE_ACTION) && | |
3657 | os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) { | |
3658 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
3659 | HOSTAPD_LEVEL_DEBUG, | |
3660 | "MGMT: DA=" MACSTR " not our address", | |
3661 | MAC2STR(mgmt->da)); | |
3662 | return 0; | |
3663 | } | |
3664 | ||
3665 | if (hapd->iconf->track_sta_max_num) | |
3666 | sta_track_add(hapd->iface, mgmt->sa, fi->ssi_signal); | |
3667 | ||
3668 | switch (stype) { | |
3669 | case WLAN_FC_STYPE_AUTH: | |
3670 | wpa_printf(MSG_DEBUG, "mgmt::auth"); | |
3671 | handle_auth(hapd, mgmt, len); | |
3672 | ret = 1; | |
3673 | break; | |
3674 | case WLAN_FC_STYPE_ASSOC_REQ: | |
3675 | wpa_printf(MSG_DEBUG, "mgmt::assoc_req"); | |
3676 | handle_assoc(hapd, mgmt, len, 0); | |
3677 | ret = 1; | |
3678 | break; | |
3679 | case WLAN_FC_STYPE_REASSOC_REQ: | |
3680 | wpa_printf(MSG_DEBUG, "mgmt::reassoc_req"); | |
3681 | handle_assoc(hapd, mgmt, len, 1); | |
3682 | ret = 1; | |
3683 | break; | |
3684 | case WLAN_FC_STYPE_DISASSOC: | |
3685 | wpa_printf(MSG_DEBUG, "mgmt::disassoc"); | |
3686 | handle_disassoc(hapd, mgmt, len); | |
3687 | ret = 1; | |
3688 | break; | |
3689 | case WLAN_FC_STYPE_DEAUTH: | |
3690 | wpa_msg(hapd->msg_ctx, MSG_DEBUG, "mgmt::deauth"); | |
3691 | handle_deauth(hapd, mgmt, len); | |
3692 | ret = 1; | |
3693 | break; | |
3694 | case WLAN_FC_STYPE_ACTION: | |
3695 | wpa_printf(MSG_DEBUG, "mgmt::action"); | |
3696 | ret = handle_action(hapd, mgmt, len); | |
3697 | break; | |
3698 | default: | |
3699 | hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211, | |
3700 | HOSTAPD_LEVEL_DEBUG, | |
3701 | "unknown mgmt frame subtype %d", stype); | |
3702 | break; | |
3703 | } | |
3704 | ||
3705 | return ret; | |
3706 | } | |
3707 | ||
3708 | ||
3709 | static void handle_auth_cb(struct hostapd_data *hapd, | |
3710 | const struct ieee80211_mgmt *mgmt, | |
3711 | size_t len, int ok) | |
3712 | { | |
3713 | u16 auth_alg, auth_transaction, status_code; | |
3714 | struct sta_info *sta; | |
3715 | ||
3716 | sta = ap_get_sta(hapd, mgmt->da); | |
3717 | if (!sta) { | |
3718 | wpa_printf(MSG_INFO, "handle_auth_cb: STA " MACSTR " not found", | |
3719 | MAC2STR(mgmt->da)); | |
3720 | return; | |
3721 | } | |
3722 | ||
3723 | auth_alg = le_to_host16(mgmt->u.auth.auth_alg); | |
3724 | auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction); | |
3725 | status_code = le_to_host16(mgmt->u.auth.status_code); | |
3726 | ||
3727 | if (!ok) { | |
3728 | hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211, | |
3729 | HOSTAPD_LEVEL_NOTICE, | |
3730 | "did not acknowledge authentication response"); | |
3731 | goto fail; | |
3732 | } | |
3733 | ||
3734 | if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) { | |
3735 | wpa_printf(MSG_INFO, "handle_auth_cb - too short payload (len=%lu)", | |
3736 | (unsigned long) len); | |
3737 | goto fail; | |
3738 | } | |
3739 | ||
3740 | if (status_code == WLAN_STATUS_SUCCESS && | |
3741 | ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) || | |
3742 | (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) { | |
3743 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
3744 | HOSTAPD_LEVEL_INFO, "authenticated"); | |
3745 | sta->flags |= WLAN_STA_AUTH; | |
3746 | if (sta->added_unassoc) | |
3747 | hostapd_set_sta_flags(hapd, sta); | |
3748 | return; | |
3749 | } | |
3750 | ||
3751 | fail: | |
3752 | if (status_code != WLAN_STATUS_SUCCESS && sta->added_unassoc) { | |
3753 | hostapd_drv_sta_remove(hapd, sta->addr); | |
3754 | sta->added_unassoc = 0; | |
3755 | } | |
3756 | } | |
3757 | ||
3758 | ||
3759 | static void hostapd_set_wds_encryption(struct hostapd_data *hapd, | |
3760 | struct sta_info *sta, | |
3761 | char *ifname_wds) | |
3762 | { | |
3763 | int i; | |
3764 | struct hostapd_ssid *ssid = &hapd->conf->ssid; | |
3765 | ||
3766 | if (hapd->conf->ieee802_1x || hapd->conf->wpa) | |
3767 | return; | |
3768 | ||
3769 | for (i = 0; i < 4; i++) { | |
3770 | if (ssid->wep.key[i] && | |
3771 | hostapd_drv_set_key(ifname_wds, hapd, WPA_ALG_WEP, NULL, i, | |
3772 | i == ssid->wep.idx, NULL, 0, | |
3773 | ssid->wep.key[i], ssid->wep.len[i])) { | |
3774 | wpa_printf(MSG_WARNING, | |
3775 | "Could not set WEP keys for WDS interface; %s", | |
3776 | ifname_wds); | |
3777 | break; | |
3778 | } | |
3779 | } | |
3780 | } | |
3781 | ||
3782 | ||
3783 | static void handle_assoc_cb(struct hostapd_data *hapd, | |
3784 | const struct ieee80211_mgmt *mgmt, | |
3785 | size_t len, int reassoc, int ok) | |
3786 | { | |
3787 | u16 status; | |
3788 | struct sta_info *sta; | |
3789 | int new_assoc = 1; | |
3790 | ||
3791 | sta = ap_get_sta(hapd, mgmt->da); | |
3792 | if (!sta) { | |
3793 | wpa_printf(MSG_INFO, "handle_assoc_cb: STA " MACSTR " not found", | |
3794 | MAC2STR(mgmt->da)); | |
3795 | return; | |
3796 | } | |
3797 | ||
3798 | if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) : | |
3799 | sizeof(mgmt->u.assoc_resp))) { | |
3800 | wpa_printf(MSG_INFO, | |
3801 | "handle_assoc_cb(reassoc=%d) - too short payload (len=%lu)", | |
3802 | reassoc, (unsigned long) len); | |
3803 | hostapd_drv_sta_remove(hapd, sta->addr); | |
3804 | return; | |
3805 | } | |
3806 | ||
3807 | if (reassoc) | |
3808 | status = le_to_host16(mgmt->u.reassoc_resp.status_code); | |
3809 | else | |
3810 | status = le_to_host16(mgmt->u.assoc_resp.status_code); | |
3811 | ||
3812 | if (!ok) { | |
3813 | hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211, | |
3814 | HOSTAPD_LEVEL_DEBUG, | |
3815 | "did not acknowledge association response"); | |
3816 | sta->flags &= ~WLAN_STA_ASSOC_REQ_OK; | |
3817 | /* The STA is added only in case of SUCCESS */ | |
3818 | if (status == WLAN_STATUS_SUCCESS) | |
3819 | hostapd_drv_sta_remove(hapd, sta->addr); | |
3820 | ||
3821 | return; | |
3822 | } | |
3823 | ||
3824 | if (status != WLAN_STATUS_SUCCESS) | |
3825 | return; | |
3826 | ||
3827 | /* Stop previous accounting session, if one is started, and allocate | |
3828 | * new session id for the new session. */ | |
3829 | accounting_sta_stop(hapd, sta); | |
3830 | ||
3831 | hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, | |
3832 | HOSTAPD_LEVEL_INFO, | |
3833 | "associated (aid %d)", | |
3834 | sta->aid); | |
3835 | ||
3836 | if (sta->flags & WLAN_STA_ASSOC) | |
3837 | new_assoc = 0; | |
3838 | sta->flags |= WLAN_STA_ASSOC; | |
3839 | sta->flags &= ~WLAN_STA_WNM_SLEEP_MODE; | |
3840 | if ((!hapd->conf->ieee802_1x && !hapd->conf->wpa && | |
3841 | !hapd->conf->osen) || | |
3842 | sta->auth_alg == WLAN_AUTH_FILS_SK || | |
3843 | sta->auth_alg == WLAN_AUTH_FILS_SK_PFS || | |
3844 | sta->auth_alg == WLAN_AUTH_FILS_PK || | |
3845 | sta->auth_alg == WLAN_AUTH_FT) { | |
3846 | /* | |
3847 | * Open, static WEP, FT protocol, or FILS; no separate | |
3848 | * authorization step. | |
3849 | */ | |
3850 | ap_sta_set_authorized(hapd, sta, 1); | |
3851 | } | |
3852 | ||
3853 | if (reassoc) | |
3854 | mlme_reassociate_indication(hapd, sta); | |
3855 | else | |
3856 | mlme_associate_indication(hapd, sta); | |
3857 | ||
3858 | #ifdef CONFIG_IEEE80211W | |
3859 | sta->sa_query_timed_out = 0; | |
3860 | #endif /* CONFIG_IEEE80211W */ | |
3861 | ||
3862 | if (sta->eapol_sm == NULL) { | |
3863 | /* | |
3864 | * This STA does not use RADIUS server for EAP authentication, | |
3865 | * so bind it to the selected VLAN interface now, since the | |
3866 | * interface selection is not going to change anymore. | |
3867 | */ | |
3868 | if (ap_sta_bind_vlan(hapd, sta) < 0) | |
3869 | return; | |
3870 | } else if (sta->vlan_id) { | |
3871 | /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */ | |
3872 | if (ap_sta_bind_vlan(hapd, sta) < 0) | |
3873 | return; | |
3874 | } | |
3875 | ||
3876 | hostapd_set_sta_flags(hapd, sta); | |
3877 | ||
3878 | if (!(sta->flags & WLAN_STA_WDS) && sta->pending_wds_enable) { | |
3879 | wpa_printf(MSG_DEBUG, "Enable 4-address WDS mode for STA " | |
3880 | MACSTR " based on pending request", | |
3881 | MAC2STR(sta->addr)); | |
3882 | sta->pending_wds_enable = 0; | |
3883 | sta->flags |= WLAN_STA_WDS; | |
3884 | } | |
3885 | ||
3886 | if (sta->flags & WLAN_STA_WDS) { | |
3887 | int ret; | |
3888 | char ifname_wds[IFNAMSIZ + 1]; | |
3889 | ||
3890 | wpa_printf(MSG_DEBUG, "Reenable 4-address WDS mode for STA " | |
3891 | MACSTR " (aid %u)", | |
3892 | MAC2STR(sta->addr), sta->aid); | |
3893 | ret = hostapd_set_wds_sta(hapd, ifname_wds, sta->addr, | |
3894 | sta->aid, 1); | |
3895 | if (!ret) | |
3896 | hostapd_set_wds_encryption(hapd, sta, ifname_wds); | |
3897 | } | |
3898 | ||
3899 | if (sta->auth_alg == WLAN_AUTH_FT) | |
3900 | wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT); | |
3901 | else | |
3902 | wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC); | |
3903 | hapd->new_assoc_sta_cb(hapd, sta, !new_assoc); | |
3904 | ieee802_1x_notify_port_enabled(sta->eapol_sm, 1); | |
3905 | ||
3906 | #ifdef CONFIG_FILS | |
3907 | if ((sta->auth_alg == WLAN_AUTH_FILS_SK || | |
3908 | sta->auth_alg == WLAN_AUTH_FILS_SK_PFS || | |
3909 | sta->auth_alg == WLAN_AUTH_FILS_PK) && | |
3910 | fils_set_tk(sta->wpa_sm) < 0) { | |
3911 | wpa_printf(MSG_DEBUG, "FILS: TK configuration failed"); | |
3912 | ap_sta_disconnect(hapd, sta, sta->addr, | |
3913 | WLAN_REASON_UNSPECIFIED); | |
3914 | return; | |
3915 | } | |
3916 | #endif /* CONFIG_FILS */ | |
3917 | ||
3918 | if (sta->pending_eapol_rx) { | |
3919 | struct os_reltime now, age; | |
3920 | ||
3921 | os_get_reltime(&now); | |
3922 | os_reltime_sub(&now, &sta->pending_eapol_rx->rx_time, &age); | |
3923 | if (age.sec == 0 && age.usec < 200000) { | |
3924 | wpa_printf(MSG_DEBUG, | |
3925 | "Process pending EAPOL frame that was received from " MACSTR " just before association notification", | |
3926 | MAC2STR(sta->addr)); | |
3927 | ieee802_1x_receive( | |
3928 | hapd, mgmt->da, | |
3929 | wpabuf_head(sta->pending_eapol_rx->buf), | |
3930 | wpabuf_len(sta->pending_eapol_rx->buf)); | |
3931 | } | |
3932 | wpabuf_free(sta->pending_eapol_rx->buf); | |
3933 | os_free(sta->pending_eapol_rx); | |
3934 | sta->pending_eapol_rx = NULL; | |
3935 | } | |
3936 | } | |
3937 | ||
3938 | ||
3939 | static void handle_deauth_cb(struct hostapd_data *hapd, | |
3940 | const struct ieee80211_mgmt *mgmt, | |
3941 | size_t len, int ok) | |
3942 | { | |
3943 | struct sta_info *sta; | |
3944 | if (is_multicast_ether_addr(mgmt->da)) | |
3945 | return; | |
3946 | sta = ap_get_sta(hapd, mgmt->da); | |
3947 | if (!sta) { | |
3948 | wpa_printf(MSG_DEBUG, "handle_deauth_cb: STA " MACSTR | |
3949 | " not found", MAC2STR(mgmt->da)); | |
3950 | return; | |
3951 | } | |
3952 | if (ok) | |
3953 | wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged deauth", | |
3954 | MAC2STR(sta->addr)); | |
3955 | else | |
3956 | wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge " | |
3957 | "deauth", MAC2STR(sta->addr)); | |
3958 | ||
3959 | ap_sta_deauth_cb(hapd, sta); | |
3960 | } | |
3961 | ||
3962 | ||
3963 | static void handle_disassoc_cb(struct hostapd_data *hapd, | |
3964 | const struct ieee80211_mgmt *mgmt, | |
3965 | size_t len, int ok) | |
3966 | { | |
3967 | struct sta_info *sta; | |
3968 | if (is_multicast_ether_addr(mgmt->da)) | |
3969 | return; | |
3970 | sta = ap_get_sta(hapd, mgmt->da); | |
3971 | if (!sta) { | |
3972 | wpa_printf(MSG_DEBUG, "handle_disassoc_cb: STA " MACSTR | |
3973 | " not found", MAC2STR(mgmt->da)); | |
3974 | return; | |
3975 | } | |
3976 | if (ok) | |
3977 | wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged disassoc", | |
3978 | MAC2STR(sta->addr)); | |
3979 | else | |
3980 | wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge " | |
3981 | "disassoc", MAC2STR(sta->addr)); | |
3982 | ||
3983 | ap_sta_disassoc_cb(hapd, sta); | |
3984 | } | |
3985 | ||
3986 | ||
3987 | static void handle_action_cb(struct hostapd_data *hapd, | |
3988 | const struct ieee80211_mgmt *mgmt, | |
3989 | size_t len, int ok) | |
3990 | { | |
3991 | struct sta_info *sta; | |
3992 | const struct rrm_measurement_report_element *report; | |
3993 | ||
3994 | if (is_multicast_ether_addr(mgmt->da)) | |
3995 | return; | |
3996 | #ifdef CONFIG_DPP | |
3997 | if (len >= IEEE80211_HDRLEN + 6 && | |
3998 | mgmt->u.action.category == WLAN_ACTION_PUBLIC && | |
3999 | mgmt->u.action.u.vs_public_action.action == | |
4000 | WLAN_PA_VENDOR_SPECIFIC && | |
4001 | WPA_GET_BE24(mgmt->u.action.u.vs_public_action.oui) == | |
4002 | OUI_WFA && | |
4003 | mgmt->u.action.u.vs_public_action.variable[0] == | |
4004 | DPP_OUI_TYPE) { | |
4005 | const u8 *pos, *end; | |
4006 | ||
4007 | pos = &mgmt->u.action.u.vs_public_action.variable[1]; | |
4008 | end = ((const u8 *) mgmt) + len; | |
4009 | hostapd_dpp_tx_status(hapd, mgmt->da, pos, end - pos, ok); | |
4010 | return; | |
4011 | } | |
4012 | if (len >= IEEE80211_HDRLEN + 2 && | |
4013 | mgmt->u.action.category == WLAN_ACTION_PUBLIC && | |
4014 | (mgmt->u.action.u.public_action.action == | |
4015 | WLAN_PA_GAS_INITIAL_REQ || | |
4016 | mgmt->u.action.u.public_action.action == | |
4017 | WLAN_PA_GAS_COMEBACK_REQ)) { | |
4018 | const u8 *pos, *end; | |
4019 | ||
4020 | pos = mgmt->u.action.u.public_action.variable; | |
4021 | end = ((const u8 *) mgmt) + len; | |
4022 | gas_query_ap_tx_status(hapd->gas, mgmt->da, pos, end - pos, ok); | |
4023 | return; | |
4024 | } | |
4025 | #endif /* CONFIG_DPP */ | |
4026 | sta = ap_get_sta(hapd, mgmt->da); | |
4027 | if (!sta) { | |
4028 | wpa_printf(MSG_DEBUG, "handle_action_cb: STA " MACSTR | |
4029 | " not found", MAC2STR(mgmt->da)); | |
4030 | return; | |
4031 | } | |
4032 | ||
4033 | if (len < 24 + 5 + sizeof(*report)) | |
4034 | return; | |
4035 | report = (const struct rrm_measurement_report_element *) | |
4036 | &mgmt->u.action.u.rrm.variable[2]; | |
4037 | if (mgmt->u.action.category == WLAN_ACTION_RADIO_MEASUREMENT && | |
4038 | mgmt->u.action.u.rrm.action == WLAN_RRM_RADIO_MEASUREMENT_REQUEST && | |
4039 | report->eid == WLAN_EID_MEASURE_REQUEST && | |
4040 | report->len >= 3 && | |
4041 | report->type == MEASURE_TYPE_BEACON) | |
4042 | hostapd_rrm_beacon_req_tx_status(hapd, mgmt, len, ok); | |
4043 | } | |
4044 | ||
4045 | ||
4046 | /** | |
4047 | * ieee802_11_mgmt_cb - Process management frame TX status callback | |
4048 | * @hapd: hostapd BSS data structure (the BSS from which the management frame | |
4049 | * was sent from) | |
4050 | * @buf: management frame data (starting from IEEE 802.11 header) | |
4051 | * @len: length of frame data in octets | |
4052 | * @stype: management frame subtype from frame control field | |
4053 | * @ok: Whether the frame was ACK'ed | |
4054 | */ | |
4055 | void ieee802_11_mgmt_cb(struct hostapd_data *hapd, const u8 *buf, size_t len, | |
4056 | u16 stype, int ok) | |
4057 | { | |
4058 | const struct ieee80211_mgmt *mgmt; | |
4059 | mgmt = (const struct ieee80211_mgmt *) buf; | |
4060 | ||
4061 | #ifdef CONFIG_TESTING_OPTIONS | |
4062 | if (hapd->ext_mgmt_frame_handling) { | |
4063 | wpa_msg(hapd->msg_ctx, MSG_INFO, "MGMT-TX-STATUS stype=%u ok=%d", | |
4064 | stype, ok); | |
4065 | return; | |
4066 | } | |
4067 | #endif /* CONFIG_TESTING_OPTIONS */ | |
4068 | ||
4069 | switch (stype) { | |
4070 | case WLAN_FC_STYPE_AUTH: | |
4071 | wpa_printf(MSG_DEBUG, "mgmt::auth cb"); | |
4072 | handle_auth_cb(hapd, mgmt, len, ok); | |
4073 | break; | |
4074 | case WLAN_FC_STYPE_ASSOC_RESP: | |
4075 | wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb"); | |
4076 | handle_assoc_cb(hapd, mgmt, len, 0, ok); | |
4077 | break; | |
4078 | case WLAN_FC_STYPE_REASSOC_RESP: | |
4079 | wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb"); | |
4080 | handle_assoc_cb(hapd, mgmt, len, 1, ok); | |
4081 | break; | |
4082 | case WLAN_FC_STYPE_PROBE_RESP: | |
4083 | wpa_printf(MSG_EXCESSIVE, "mgmt::proberesp cb ok=%d", ok); | |
4084 | break; | |
4085 | case WLAN_FC_STYPE_DEAUTH: | |
4086 | wpa_printf(MSG_DEBUG, "mgmt::deauth cb"); | |
4087 | handle_deauth_cb(hapd, mgmt, len, ok); | |
4088 | break; | |
4089 | case WLAN_FC_STYPE_DISASSOC: | |
4090 | wpa_printf(MSG_DEBUG, "mgmt::disassoc cb"); | |
4091 | handle_disassoc_cb(hapd, mgmt, len, ok); | |
4092 | break; | |
4093 | case WLAN_FC_STYPE_ACTION: | |
4094 | wpa_printf(MSG_DEBUG, "mgmt::action cb ok=%d", ok); | |
4095 | handle_action_cb(hapd, mgmt, len, ok); | |
4096 | break; | |
4097 | default: | |
4098 | wpa_printf(MSG_INFO, "unknown mgmt cb frame subtype %d", stype); | |
4099 | break; | |
4100 | } | |
4101 | } | |
4102 | ||
4103 | ||
4104 | int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen) | |
4105 | { | |
4106 | /* TODO */ | |
4107 | return 0; | |
4108 | } | |
4109 | ||
4110 | ||
4111 | int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta, | |
4112 | char *buf, size_t buflen) | |
4113 | { | |
4114 | /* TODO */ | |
4115 | return 0; | |
4116 | } | |
4117 | ||
4118 | ||
4119 | void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr, | |
4120 | const u8 *buf, size_t len, int ack) | |
4121 | { | |
4122 | struct sta_info *sta; | |
4123 | struct hostapd_iface *iface = hapd->iface; | |
4124 | ||
4125 | sta = ap_get_sta(hapd, addr); | |
4126 | if (sta == NULL && iface->num_bss > 1) { | |
4127 | size_t j; | |
4128 | for (j = 0; j < iface->num_bss; j++) { | |
4129 | hapd = iface->bss[j]; | |
4130 | sta = ap_get_sta(hapd, addr); | |
4131 | if (sta) | |
4132 | break; | |
4133 | } | |
4134 | } | |
4135 | if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) | |
4136 | return; | |
4137 | if (sta->flags & WLAN_STA_PENDING_POLL) { | |
4138 | wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending " | |
4139 | "activity poll", MAC2STR(sta->addr), | |
4140 | ack ? "ACKed" : "did not ACK"); | |
4141 | if (ack) | |
4142 | sta->flags &= ~WLAN_STA_PENDING_POLL; | |
4143 | } | |
4144 | ||
4145 | ieee802_1x_tx_status(hapd, sta, buf, len, ack); | |
4146 | } | |
4147 | ||
4148 | ||
4149 | void hostapd_eapol_tx_status(struct hostapd_data *hapd, const u8 *dst, | |
4150 | const u8 *data, size_t len, int ack) | |
4151 | { | |
4152 | struct sta_info *sta; | |
4153 | struct hostapd_iface *iface = hapd->iface; | |
4154 | ||
4155 | sta = ap_get_sta(hapd, dst); | |
4156 | if (sta == NULL && iface->num_bss > 1) { | |
4157 | size_t j; | |
4158 | for (j = 0; j < iface->num_bss; j++) { | |
4159 | hapd = iface->bss[j]; | |
4160 | sta = ap_get_sta(hapd, dst); | |
4161 | if (sta) | |
4162 | break; | |
4163 | } | |
4164 | } | |
4165 | if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) { | |
4166 | wpa_printf(MSG_DEBUG, "Ignore TX status for Data frame to STA " | |
4167 | MACSTR " that is not currently associated", | |
4168 | MAC2STR(dst)); | |
4169 | return; | |
4170 | } | |
4171 | ||
4172 | ieee802_1x_eapol_tx_status(hapd, sta, data, len, ack); | |
4173 | } | |
4174 | ||
4175 | ||
4176 | void hostapd_client_poll_ok(struct hostapd_data *hapd, const u8 *addr) | |
4177 | { | |
4178 | struct sta_info *sta; | |
4179 | struct hostapd_iface *iface = hapd->iface; | |
4180 | ||
4181 | sta = ap_get_sta(hapd, addr); | |
4182 | if (sta == NULL && iface->num_bss > 1) { | |
4183 | size_t j; | |
4184 | for (j = 0; j < iface->num_bss; j++) { | |
4185 | hapd = iface->bss[j]; | |
4186 | sta = ap_get_sta(hapd, addr); | |
4187 | if (sta) | |
4188 | break; | |
4189 | } | |
4190 | } | |
4191 | if (sta == NULL) | |
4192 | return; | |
4193 | wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_POLL_OK MACSTR, | |
4194 | MAC2STR(sta->addr)); | |
4195 | if (!(sta->flags & WLAN_STA_PENDING_POLL)) | |
4196 | return; | |
4197 | ||
4198 | wpa_printf(MSG_DEBUG, "STA " MACSTR " ACKed pending " | |
4199 | "activity poll", MAC2STR(sta->addr)); | |
4200 | sta->flags &= ~WLAN_STA_PENDING_POLL; | |
4201 | } | |
4202 | ||
4203 | ||
4204 | void ieee802_11_rx_from_unknown(struct hostapd_data *hapd, const u8 *src, | |
4205 | int wds) | |
4206 | { | |
4207 | struct sta_info *sta; | |
4208 | ||
4209 | sta = ap_get_sta(hapd, src); | |
4210 | if (sta && | |
4211 | ((sta->flags & WLAN_STA_ASSOC) || | |
4212 | ((sta->flags & WLAN_STA_ASSOC_REQ_OK) && wds))) { | |
4213 | if (!hapd->conf->wds_sta) | |
4214 | return; | |
4215 | ||
4216 | if ((sta->flags & (WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK)) == | |
4217 | WLAN_STA_ASSOC_REQ_OK) { | |
4218 | wpa_printf(MSG_DEBUG, | |
4219 | "Postpone 4-address WDS mode enabling for STA " | |
4220 | MACSTR " since TX status for AssocResp is not yet known", | |
4221 | MAC2STR(sta->addr)); | |
4222 | sta->pending_wds_enable = 1; | |
4223 | return; | |
4224 | } | |
4225 | ||
4226 | if (wds && !(sta->flags & WLAN_STA_WDS)) { | |
4227 | int ret; | |
4228 | char ifname_wds[IFNAMSIZ + 1]; | |
4229 | ||
4230 | wpa_printf(MSG_DEBUG, "Enable 4-address WDS mode for " | |
4231 | "STA " MACSTR " (aid %u)", | |
4232 | MAC2STR(sta->addr), sta->aid); | |
4233 | sta->flags |= WLAN_STA_WDS; | |
4234 | ret = hostapd_set_wds_sta(hapd, ifname_wds, | |
4235 | sta->addr, sta->aid, 1); | |
4236 | if (!ret) | |
4237 | hostapd_set_wds_encryption(hapd, sta, | |
4238 | ifname_wds); | |
4239 | } | |
4240 | return; | |
4241 | } | |
4242 | ||
4243 | wpa_printf(MSG_DEBUG, "Data/PS-poll frame from not associated STA " | |
4244 | MACSTR, MAC2STR(src)); | |
4245 | if (is_multicast_ether_addr(src)) { | |
4246 | /* Broadcast bit set in SA?! Ignore the frame silently. */ | |
4247 | return; | |
4248 | } | |
4249 | ||
4250 | if (sta && (sta->flags & WLAN_STA_ASSOC_REQ_OK)) { | |
4251 | wpa_printf(MSG_DEBUG, "Association Response to the STA has " | |
4252 | "already been sent, but no TX status yet known - " | |
4253 | "ignore Class 3 frame issue with " MACSTR, | |
4254 | MAC2STR(src)); | |
4255 | return; | |
4256 | } | |
4257 | ||
4258 | if (sta && (sta->flags & WLAN_STA_AUTH)) | |
4259 | hostapd_drv_sta_disassoc( | |
4260 | hapd, src, | |
4261 | WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); | |
4262 | else | |
4263 | hostapd_drv_sta_deauth( | |
4264 | hapd, src, | |
4265 | WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); | |
4266 | } | |
4267 | ||
4268 | ||
4269 | #endif /* CONFIG_NATIVE_WINDOWS */ |