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SME: Fix SA Query local failure handling
[thirdparty/hostap.git] / wpa_supplicant / sme.c
1 /*
2 * wpa_supplicant - SME
3 * Copyright (c) 2009-2014, 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 "includes.h"
10
11 #include "common.h"
12 #include "utils/eloop.h"
13 #include "common/ieee802_11_defs.h"
14 #include "common/ieee802_11_common.h"
15 #include "eapol_supp/eapol_supp_sm.h"
16 #include "common/wpa_common.h"
17 #include "common/sae.h"
18 #include "rsn_supp/wpa.h"
19 #include "rsn_supp/pmksa_cache.h"
20 #include "config.h"
21 #include "wpa_supplicant_i.h"
22 #include "driver_i.h"
23 #include "wpas_glue.h"
24 #include "wps_supplicant.h"
25 #include "p2p_supplicant.h"
26 #include "notify.h"
27 #include "bss.h"
28 #include "scan.h"
29 #include "sme.h"
30 #include "hs20_supplicant.h"
31
32 #define SME_AUTH_TIMEOUT 5
33 #define SME_ASSOC_TIMEOUT 5
34
35 static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx);
36 static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx);
37 static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx);
38 #ifdef CONFIG_IEEE80211W
39 static void sme_stop_sa_query(struct wpa_supplicant *wpa_s);
40 #endif /* CONFIG_IEEE80211W */
41
42
43 #ifdef CONFIG_SAE
44
45 static int index_within_array(const int *array, int idx)
46 {
47 int i;
48 for (i = 0; i < idx; i++) {
49 if (array[i] <= 0)
50 return 0;
51 }
52 return 1;
53 }
54
55
56 static int sme_set_sae_group(struct wpa_supplicant *wpa_s)
57 {
58 int *groups = wpa_s->conf->sae_groups;
59 int default_groups[] = { 19, 20, 21, 25, 26, 0 };
60
61 if (!groups || groups[0] <= 0)
62 groups = default_groups;
63
64 /* Configuration may have changed, so validate current index */
65 if (!index_within_array(groups, wpa_s->sme.sae_group_index))
66 return -1;
67
68 for (;;) {
69 int group = groups[wpa_s->sme.sae_group_index];
70 if (group <= 0)
71 break;
72 if (sae_set_group(&wpa_s->sme.sae, group) == 0) {
73 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected SAE group %d",
74 wpa_s->sme.sae.group);
75 return 0;
76 }
77 wpa_s->sme.sae_group_index++;
78 }
79
80 return -1;
81 }
82
83
84 static struct wpabuf * sme_auth_build_sae_commit(struct wpa_supplicant *wpa_s,
85 struct wpa_ssid *ssid,
86 const u8 *bssid)
87 {
88 struct wpabuf *buf;
89 size_t len;
90
91 if (ssid->passphrase == NULL) {
92 wpa_printf(MSG_DEBUG, "SAE: No password available");
93 return NULL;
94 }
95
96 if (sme_set_sae_group(wpa_s) < 0) {
97 wpa_printf(MSG_DEBUG, "SAE: Failed to select group");
98 return NULL;
99 }
100
101 if (sae_prepare_commit(wpa_s->own_addr, bssid,
102 (u8 *) ssid->passphrase,
103 os_strlen(ssid->passphrase),
104 &wpa_s->sme.sae) < 0) {
105 wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE");
106 return NULL;
107 }
108
109 len = wpa_s->sme.sae_token ? wpabuf_len(wpa_s->sme.sae_token) : 0;
110 buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + len);
111 if (buf == NULL)
112 return NULL;
113
114 wpabuf_put_le16(buf, 1); /* Transaction seq# */
115 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
116 sae_write_commit(&wpa_s->sme.sae, buf, wpa_s->sme.sae_token);
117
118 return buf;
119 }
120
121
122 static struct wpabuf * sme_auth_build_sae_confirm(struct wpa_supplicant *wpa_s)
123 {
124 struct wpabuf *buf;
125
126 buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN);
127 if (buf == NULL)
128 return NULL;
129
130 wpabuf_put_le16(buf, 2); /* Transaction seq# */
131 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
132 sae_write_confirm(&wpa_s->sme.sae, buf);
133
134 return buf;
135 }
136
137 #endif /* CONFIG_SAE */
138
139
140 /**
141 * sme_auth_handle_rrm - Handle RRM aspects of current authentication attempt
142 * @wpa_s: Pointer to wpa_supplicant data
143 * @bss: Pointer to the bss which is the target of authentication attempt
144 */
145 static void sme_auth_handle_rrm(struct wpa_supplicant *wpa_s,
146 struct wpa_bss *bss)
147 {
148 const u8 rrm_ie_len = 5;
149 u8 *pos;
150 const u8 *rrm_ie;
151
152 wpa_s->rrm.rrm_used = 0;
153
154 wpa_printf(MSG_DEBUG,
155 "RRM: Determining whether RRM can be used - device support: 0x%x",
156 wpa_s->drv_rrm_flags);
157
158 rrm_ie = wpa_bss_get_ie(bss, WLAN_EID_RRM_ENABLED_CAPABILITIES);
159 if (!rrm_ie || !(bss->caps & IEEE80211_CAP_RRM)) {
160 wpa_printf(MSG_DEBUG, "RRM: No RRM in network");
161 return;
162 }
163
164 if (!((wpa_s->drv_rrm_flags &
165 WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) &&
166 (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET)) &&
167 !(wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_SUPPORT_RRM)) {
168 wpa_printf(MSG_DEBUG,
169 "RRM: Insufficient RRM support in driver - do not use RRM");
170 return;
171 }
172
173 if (sizeof(wpa_s->sme.assoc_req_ie) <
174 wpa_s->sme.assoc_req_ie_len + rrm_ie_len + 2) {
175 wpa_printf(MSG_INFO,
176 "RRM: Unable to use RRM, no room for RRM IE");
177 return;
178 }
179
180 wpa_printf(MSG_DEBUG, "RRM: Adding RRM IE to Association Request");
181 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
182 os_memset(pos, 0, 2 + rrm_ie_len);
183 *pos++ = WLAN_EID_RRM_ENABLED_CAPABILITIES;
184 *pos++ = rrm_ie_len;
185
186 /* Set supported capabilites flags */
187 if (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION)
188 *pos |= WLAN_RRM_CAPS_LINK_MEASUREMENT;
189
190 if (wpa_s->lci)
191 pos[1] |= WLAN_RRM_CAPS_LCI_MEASUREMENT;
192
193 wpa_s->sme.assoc_req_ie_len += rrm_ie_len + 2;
194 wpa_s->rrm.rrm_used = 1;
195 }
196
197
198 static void sme_send_authentication(struct wpa_supplicant *wpa_s,
199 struct wpa_bss *bss, struct wpa_ssid *ssid,
200 int start)
201 {
202 struct wpa_driver_auth_params params;
203 struct wpa_ssid *old_ssid;
204 #ifdef CONFIG_IEEE80211R
205 const u8 *ie;
206 #endif /* CONFIG_IEEE80211R */
207 #ifdef CONFIG_IEEE80211R
208 const u8 *md = NULL;
209 #endif /* CONFIG_IEEE80211R */
210 int i, bssid_changed;
211 struct wpabuf *resp = NULL;
212 u8 ext_capab[18];
213 int ext_capab_len;
214 int skip_auth;
215 #ifdef CONFIG_MBO
216 const u8 *mbo;
217 #endif /* CONFIG_MBO */
218
219 if (bss == NULL) {
220 wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for "
221 "the network");
222 wpas_connect_work_done(wpa_s);
223 return;
224 }
225
226 skip_auth = wpa_s->conf->reassoc_same_bss_optim &&
227 wpa_s->reassoc_same_bss;
228 wpa_s->current_bss = bss;
229
230 os_memset(&params, 0, sizeof(params));
231 wpa_s->reassociate = 0;
232
233 params.freq = bss->freq;
234 params.bssid = bss->bssid;
235 params.ssid = bss->ssid;
236 params.ssid_len = bss->ssid_len;
237 params.p2p = ssid->p2p_group;
238
239 if (wpa_s->sme.ssid_len != params.ssid_len ||
240 os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
241 wpa_s->sme.prev_bssid_set = 0;
242
243 wpa_s->sme.freq = params.freq;
244 os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
245 wpa_s->sme.ssid_len = params.ssid_len;
246
247 params.auth_alg = WPA_AUTH_ALG_OPEN;
248 #ifdef IEEE8021X_EAPOL
249 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
250 if (ssid->leap) {
251 if (ssid->non_leap == 0)
252 params.auth_alg = WPA_AUTH_ALG_LEAP;
253 else
254 params.auth_alg |= WPA_AUTH_ALG_LEAP;
255 }
256 }
257 #endif /* IEEE8021X_EAPOL */
258 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
259 params.auth_alg);
260 if (ssid->auth_alg) {
261 params.auth_alg = ssid->auth_alg;
262 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
263 "0x%x", params.auth_alg);
264 }
265 #ifdef CONFIG_SAE
266 wpa_s->sme.sae_pmksa_caching = 0;
267 if (wpa_key_mgmt_sae(ssid->key_mgmt)) {
268 const u8 *rsn;
269 struct wpa_ie_data ied;
270
271 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
272 if (!rsn) {
273 wpa_dbg(wpa_s, MSG_DEBUG,
274 "SAE enabled, but target BSS does not advertise RSN");
275 } else if (wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 &&
276 wpa_key_mgmt_sae(ied.key_mgmt)) {
277 wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg");
278 params.auth_alg = WPA_AUTH_ALG_SAE;
279 } else {
280 wpa_dbg(wpa_s, MSG_DEBUG,
281 "SAE enabled, but target BSS does not advertise SAE AKM for RSN");
282 }
283 }
284 #endif /* CONFIG_SAE */
285
286 for (i = 0; i < NUM_WEP_KEYS; i++) {
287 if (ssid->wep_key_len[i])
288 params.wep_key[i] = ssid->wep_key[i];
289 params.wep_key_len[i] = ssid->wep_key_len[i];
290 }
291 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
292
293 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
294 os_memset(wpa_s->bssid, 0, ETH_ALEN);
295 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
296 if (bssid_changed)
297 wpas_notify_bssid_changed(wpa_s);
298
299 if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
300 wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
301 wpa_key_mgmt_wpa(ssid->key_mgmt)) {
302 int try_opportunistic;
303 try_opportunistic = (ssid->proactive_key_caching < 0 ?
304 wpa_s->conf->okc :
305 ssid->proactive_key_caching) &&
306 (ssid->proto & WPA_PROTO_RSN);
307 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
308 wpa_s->current_ssid,
309 try_opportunistic) == 0)
310 eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
311 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
312 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
313 wpa_s->sme.assoc_req_ie,
314 &wpa_s->sme.assoc_req_ie_len)) {
315 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
316 "key management and encryption suites");
317 wpas_connect_work_done(wpa_s);
318 return;
319 }
320 } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
321 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) {
322 /*
323 * Both WPA and non-WPA IEEE 802.1X enabled in configuration -
324 * use non-WPA since the scan results did not indicate that the
325 * AP is using WPA or WPA2.
326 */
327 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
328 wpa_s->sme.assoc_req_ie_len = 0;
329 } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
330 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
331 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
332 wpa_s->sme.assoc_req_ie,
333 &wpa_s->sme.assoc_req_ie_len)) {
334 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
335 "key management and encryption suites (no "
336 "scan results)");
337 wpas_connect_work_done(wpa_s);
338 return;
339 }
340 #ifdef CONFIG_WPS
341 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
342 struct wpabuf *wps_ie;
343 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
344 if (wps_ie && wpabuf_len(wps_ie) <=
345 sizeof(wpa_s->sme.assoc_req_ie)) {
346 wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
347 os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
348 wpa_s->sme.assoc_req_ie_len);
349 } else
350 wpa_s->sme.assoc_req_ie_len = 0;
351 wpabuf_free(wps_ie);
352 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
353 #endif /* CONFIG_WPS */
354 } else {
355 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
356 wpa_s->sme.assoc_req_ie_len = 0;
357 }
358
359 #ifdef CONFIG_IEEE80211R
360 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
361 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
362 md = ie + 2;
363 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
364 if (md) {
365 /* Prepare for the next transition */
366 wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
367 }
368
369 if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) {
370 if (wpa_s->sme.assoc_req_ie_len + 5 <
371 sizeof(wpa_s->sme.assoc_req_ie)) {
372 struct rsn_mdie *mdie;
373 u8 *pos = wpa_s->sme.assoc_req_ie +
374 wpa_s->sme.assoc_req_ie_len;
375 *pos++ = WLAN_EID_MOBILITY_DOMAIN;
376 *pos++ = sizeof(*mdie);
377 mdie = (struct rsn_mdie *) pos;
378 os_memcpy(mdie->mobility_domain, md,
379 MOBILITY_DOMAIN_ID_LEN);
380 mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
381 wpa_s->sme.assoc_req_ie_len += 5;
382 }
383
384 if (wpa_s->sme.ft_used &&
385 os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
386 wpa_sm_has_ptk(wpa_s->wpa)) {
387 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT "
388 "over-the-air");
389 params.auth_alg = WPA_AUTH_ALG_FT;
390 params.ie = wpa_s->sme.ft_ies;
391 params.ie_len = wpa_s->sme.ft_ies_len;
392 }
393 }
394 #endif /* CONFIG_IEEE80211R */
395
396 #ifdef CONFIG_IEEE80211W
397 wpa_s->sme.mfp = wpas_get_ssid_pmf(wpa_s, ssid);
398 if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) {
399 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
400 struct wpa_ie_data _ie;
401 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
402 _ie.capabilities &
403 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
404 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports "
405 "MFP: require MFP");
406 wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
407 }
408 }
409 #endif /* CONFIG_IEEE80211W */
410
411 #ifdef CONFIG_P2P
412 if (wpa_s->global->p2p) {
413 u8 *pos;
414 size_t len;
415 int res;
416 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
417 len = sizeof(wpa_s->sme.assoc_req_ie) -
418 wpa_s->sme.assoc_req_ie_len;
419 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
420 ssid->p2p_group);
421 if (res >= 0)
422 wpa_s->sme.assoc_req_ie_len += res;
423 }
424 #endif /* CONFIG_P2P */
425
426 #ifdef CONFIG_FST
427 if (wpa_s->fst_ies) {
428 int fst_ies_len = wpabuf_len(wpa_s->fst_ies);
429
430 if (wpa_s->sme.assoc_req_ie_len + fst_ies_len <=
431 sizeof(wpa_s->sme.assoc_req_ie)) {
432 os_memcpy(wpa_s->sme.assoc_req_ie +
433 wpa_s->sme.assoc_req_ie_len,
434 wpabuf_head(wpa_s->fst_ies),
435 fst_ies_len);
436 wpa_s->sme.assoc_req_ie_len += fst_ies_len;
437 }
438 }
439 #endif /* CONFIG_FST */
440
441 sme_auth_handle_rrm(wpa_s, bss);
442
443 #ifdef CONFIG_MBO
444 mbo = wpa_bss_get_vendor_ie(bss, MBO_IE_VENDOR_TYPE);
445 if (mbo) {
446 int len;
447
448 len = wpas_mbo_supp_op_class_ie(
449 wpa_s, bss->freq,
450 wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
451 sizeof(wpa_s->sme.assoc_req_ie) -
452 wpa_s->sme.assoc_req_ie_len);
453 if (len > 0)
454 wpa_s->sme.assoc_req_ie_len += len;
455 }
456 #endif /* CONFIG_MBO */
457
458 if (params.p2p)
459 wpa_drv_get_ext_capa(wpa_s, WPA_IF_P2P_CLIENT);
460 else
461 wpa_drv_get_ext_capa(wpa_s, WPA_IF_STATION);
462
463 ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab,
464 sizeof(ext_capab));
465 if (ext_capab_len > 0) {
466 u8 *pos = wpa_s->sme.assoc_req_ie;
467 if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
468 pos += 2 + pos[1];
469 os_memmove(pos + ext_capab_len, pos,
470 wpa_s->sme.assoc_req_ie_len -
471 (pos - wpa_s->sme.assoc_req_ie));
472 wpa_s->sme.assoc_req_ie_len += ext_capab_len;
473 os_memcpy(pos, ext_capab, ext_capab_len);
474 }
475
476 #ifdef CONFIG_HS20
477 if (is_hs20_network(wpa_s, ssid, bss)) {
478 struct wpabuf *hs20;
479
480 hs20 = wpabuf_alloc(20);
481 if (hs20) {
482 int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid);
483 size_t len;
484
485 wpas_hs20_add_indication(hs20, pps_mo_id);
486 len = sizeof(wpa_s->sme.assoc_req_ie) -
487 wpa_s->sme.assoc_req_ie_len;
488 if (wpabuf_len(hs20) <= len) {
489 os_memcpy(wpa_s->sme.assoc_req_ie +
490 wpa_s->sme.assoc_req_ie_len,
491 wpabuf_head(hs20), wpabuf_len(hs20));
492 wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
493 }
494 wpabuf_free(hs20);
495 }
496 }
497 #endif /* CONFIG_HS20 */
498
499 if (wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]) {
500 struct wpabuf *buf = wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ];
501 size_t len;
502
503 len = sizeof(wpa_s->sme.assoc_req_ie) -
504 wpa_s->sme.assoc_req_ie_len;
505 if (wpabuf_len(buf) <= len) {
506 os_memcpy(wpa_s->sme.assoc_req_ie +
507 wpa_s->sme.assoc_req_ie_len,
508 wpabuf_head(buf), wpabuf_len(buf));
509 wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf);
510 }
511 }
512
513 #ifdef CONFIG_MBO
514 if (mbo) {
515 int len;
516
517 len = wpas_mbo_ie(wpa_s, wpa_s->sme.assoc_req_ie +
518 wpa_s->sme.assoc_req_ie_len,
519 sizeof(wpa_s->sme.assoc_req_ie) -
520 wpa_s->sme.assoc_req_ie_len);
521 if (len >= 0)
522 wpa_s->sme.assoc_req_ie_len += len;
523 }
524 #endif /* CONFIG_MBO */
525
526 #ifdef CONFIG_SAE
527 if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE &&
528 pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, ssid, 0) == 0)
529 {
530 wpa_dbg(wpa_s, MSG_DEBUG,
531 "PMKSA cache entry found - try to use PMKSA caching instead of new SAE authentication");
532 params.auth_alg = WPA_AUTH_ALG_OPEN;
533 wpa_s->sme.sae_pmksa_caching = 1;
534 }
535
536 if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE) {
537 if (start)
538 resp = sme_auth_build_sae_commit(wpa_s, ssid,
539 bss->bssid);
540 else
541 resp = sme_auth_build_sae_confirm(wpa_s);
542 if (resp == NULL) {
543 wpas_connection_failed(wpa_s, bss->bssid);
544 return;
545 }
546 params.sae_data = wpabuf_head(resp);
547 params.sae_data_len = wpabuf_len(resp);
548 wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED;
549 }
550 #endif /* CONFIG_SAE */
551
552 wpa_supplicant_cancel_sched_scan(wpa_s);
553 wpa_supplicant_cancel_scan(wpa_s);
554
555 wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
556 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
557 wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
558
559 wpa_clear_keys(wpa_s, bss->bssid);
560 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
561 old_ssid = wpa_s->current_ssid;
562 wpa_s->current_ssid = ssid;
563 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
564 wpa_supplicant_initiate_eapol(wpa_s);
565 if (old_ssid != wpa_s->current_ssid)
566 wpas_notify_network_changed(wpa_s);
567
568 #ifdef CONFIG_HS20
569 hs20_configure_frame_filters(wpa_s);
570 #endif /* CONFIG_HS20 */
571
572 #ifdef CONFIG_P2P
573 /*
574 * If multi-channel concurrency is not supported, check for any
575 * frequency conflict. In case of any frequency conflict, remove the
576 * least prioritized connection.
577 */
578 if (wpa_s->num_multichan_concurrent < 2) {
579 int freq, num;
580 num = get_shared_radio_freqs(wpa_s, &freq, 1);
581 if (num > 0 && freq > 0 && freq != params.freq) {
582 wpa_printf(MSG_DEBUG,
583 "Conflicting frequency found (%d != %d)",
584 freq, params.freq);
585 if (wpas_p2p_handle_frequency_conflicts(wpa_s,
586 params.freq,
587 ssid) < 0) {
588 wpas_connection_failed(wpa_s, bss->bssid);
589 wpa_supplicant_mark_disassoc(wpa_s);
590 wpabuf_free(resp);
591 wpas_connect_work_done(wpa_s);
592 return;
593 }
594 }
595 }
596 #endif /* CONFIG_P2P */
597
598 if (skip_auth) {
599 wpa_msg(wpa_s, MSG_DEBUG,
600 "SME: Skip authentication step on reassoc-to-same-BSS");
601 wpabuf_free(resp);
602 sme_associate(wpa_s, ssid->mode, bss->bssid, WLAN_AUTH_OPEN);
603 return;
604 }
605
606
607 wpa_s->sme.auth_alg = params.auth_alg;
608 if (wpa_drv_authenticate(wpa_s, &params) < 0) {
609 wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
610 "driver failed");
611 wpas_connection_failed(wpa_s, bss->bssid);
612 wpa_supplicant_mark_disassoc(wpa_s);
613 wpabuf_free(resp);
614 wpas_connect_work_done(wpa_s);
615 return;
616 }
617
618 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
619 NULL);
620
621 /*
622 * Association will be started based on the authentication event from
623 * the driver.
624 */
625
626 wpabuf_free(resp);
627 }
628
629
630 static void sme_auth_start_cb(struct wpa_radio_work *work, int deinit)
631 {
632 struct wpa_connect_work *cwork = work->ctx;
633 struct wpa_supplicant *wpa_s = work->wpa_s;
634
635 if (deinit) {
636 if (work->started)
637 wpa_s->connect_work = NULL;
638
639 wpas_connect_work_free(cwork);
640 return;
641 }
642
643 wpa_s->connect_work = work;
644
645 if (cwork->bss_removed ||
646 !wpas_valid_bss_ssid(wpa_s, cwork->bss, cwork->ssid) ||
647 wpas_network_disabled(wpa_s, cwork->ssid)) {
648 wpa_dbg(wpa_s, MSG_DEBUG, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt");
649 wpas_connect_work_done(wpa_s);
650 return;
651 }
652
653 sme_send_authentication(wpa_s, cwork->bss, cwork->ssid, 1);
654 }
655
656
657 void sme_authenticate(struct wpa_supplicant *wpa_s,
658 struct wpa_bss *bss, struct wpa_ssid *ssid)
659 {
660 struct wpa_connect_work *cwork;
661
662 if (bss == NULL || ssid == NULL)
663 return;
664 if (wpa_s->connect_work) {
665 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reject sme_authenticate() call since connect_work exist");
666 return;
667 }
668
669 if (radio_work_pending(wpa_s, "sme-connect")) {
670 /*
671 * The previous sme-connect work might no longer be valid due to
672 * the fact that the BSS list was updated. In addition, it makes
673 * sense to adhere to the 'newer' decision.
674 */
675 wpa_dbg(wpa_s, MSG_DEBUG,
676 "SME: Remove previous pending sme-connect");
677 radio_remove_works(wpa_s, "sme-connect", 0);
678 }
679
680 wpas_abort_ongoing_scan(wpa_s);
681
682 cwork = os_zalloc(sizeof(*cwork));
683 if (cwork == NULL)
684 return;
685 cwork->bss = bss;
686 cwork->ssid = ssid;
687 cwork->sme = 1;
688
689 #ifdef CONFIG_SAE
690 wpa_s->sme.sae.state = SAE_NOTHING;
691 wpa_s->sme.sae.send_confirm = 0;
692 wpa_s->sme.sae_group_index = 0;
693 #endif /* CONFIG_SAE */
694
695 if (radio_add_work(wpa_s, bss->freq, "sme-connect", 1,
696 sme_auth_start_cb, cwork) < 0)
697 wpas_connect_work_free(cwork);
698 }
699
700
701 #ifdef CONFIG_SAE
702
703 static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
704 u16 status_code, const u8 *data, size_t len)
705 {
706 int *groups;
707
708 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
709 "status code %u", auth_transaction, status_code);
710
711 if (auth_transaction == 1 &&
712 status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
713 wpa_s->sme.sae.state == SAE_COMMITTED &&
714 wpa_s->current_bss && wpa_s->current_ssid) {
715 int default_groups[] = { 19, 20, 21, 25, 26, 0 };
716 u16 group;
717
718 groups = wpa_s->conf->sae_groups;
719 if (!groups || groups[0] <= 0)
720 groups = default_groups;
721
722 if (len < sizeof(le16)) {
723 wpa_dbg(wpa_s, MSG_DEBUG,
724 "SME: Too short SAE anti-clogging token request");
725 return -1;
726 }
727 group = WPA_GET_LE16(data);
728 wpa_dbg(wpa_s, MSG_DEBUG,
729 "SME: SAE anti-clogging token requested (group %u)",
730 group);
731 if (sae_group_allowed(&wpa_s->sme.sae, groups, group) !=
732 WLAN_STATUS_SUCCESS) {
733 wpa_dbg(wpa_s, MSG_ERROR,
734 "SME: SAE group %u of anti-clogging request is invalid",
735 group);
736 return -1;
737 }
738 wpabuf_free(wpa_s->sme.sae_token);
739 wpa_s->sme.sae_token = wpabuf_alloc_copy(data + sizeof(le16),
740 len - sizeof(le16));
741 sme_send_authentication(wpa_s, wpa_s->current_bss,
742 wpa_s->current_ssid, 1);
743 return 0;
744 }
745
746 if (auth_transaction == 1 &&
747 status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
748 wpa_s->sme.sae.state == SAE_COMMITTED &&
749 wpa_s->current_bss && wpa_s->current_ssid) {
750 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
751 wpa_s->sme.sae_group_index++;
752 if (sme_set_sae_group(wpa_s) < 0)
753 return -1; /* no other groups enabled */
754 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
755 sme_send_authentication(wpa_s, wpa_s->current_bss,
756 wpa_s->current_ssid, 1);
757 return 0;
758 }
759
760 if (status_code != WLAN_STATUS_SUCCESS)
761 return -1;
762
763 if (auth_transaction == 1) {
764 u16 res;
765
766 groups = wpa_s->conf->sae_groups;
767
768 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
769 if (wpa_s->current_bss == NULL ||
770 wpa_s->current_ssid == NULL)
771 return -1;
772 if (wpa_s->sme.sae.state != SAE_COMMITTED)
773 return -1;
774 if (groups && groups[0] <= 0)
775 groups = NULL;
776 res = sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
777 groups);
778 if (res == SAE_SILENTLY_DISCARD) {
779 wpa_printf(MSG_DEBUG,
780 "SAE: Drop commit message due to reflection attack");
781 return 0;
782 }
783 if (res != WLAN_STATUS_SUCCESS)
784 return -1;
785
786 if (sae_process_commit(&wpa_s->sme.sae) < 0) {
787 wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
788 "commit");
789 return -1;
790 }
791
792 wpabuf_free(wpa_s->sme.sae_token);
793 wpa_s->sme.sae_token = NULL;
794 sme_send_authentication(wpa_s, wpa_s->current_bss,
795 wpa_s->current_ssid, 0);
796 return 0;
797 } else if (auth_transaction == 2) {
798 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
799 if (wpa_s->sme.sae.state != SAE_CONFIRMED)
800 return -1;
801 if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
802 return -1;
803 wpa_s->sme.sae.state = SAE_ACCEPTED;
804 sae_clear_temp_data(&wpa_s->sme.sae);
805 return 1;
806 }
807
808 return -1;
809 }
810 #endif /* CONFIG_SAE */
811
812
813 void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
814 {
815 struct wpa_ssid *ssid = wpa_s->current_ssid;
816
817 if (ssid == NULL) {
818 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
819 "when network is not selected");
820 return;
821 }
822
823 if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
824 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
825 "when not in authenticating state");
826 return;
827 }
828
829 if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
830 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
831 "unexpected peer " MACSTR,
832 MAC2STR(data->auth.peer));
833 return;
834 }
835
836 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
837 " auth_type=%d auth_transaction=%d status_code=%d",
838 MAC2STR(data->auth.peer), data->auth.auth_type,
839 data->auth.auth_transaction, data->auth.status_code);
840 wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
841 data->auth.ies, data->auth.ies_len);
842
843 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
844
845 #ifdef CONFIG_SAE
846 if (data->auth.auth_type == WLAN_AUTH_SAE) {
847 int res;
848 res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
849 data->auth.status_code, data->auth.ies,
850 data->auth.ies_len);
851 if (res < 0) {
852 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
853 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
854
855 }
856 if (res != 1)
857 return;
858
859 wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for "
860 "4-way handshake");
861 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN,
862 wpa_s->sme.sae.pmkid, wpa_s->pending_bssid);
863 }
864 #endif /* CONFIG_SAE */
865
866 if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
867 char *ie_txt = NULL;
868
869 if (data->auth.ies && data->auth.ies_len) {
870 size_t buflen = 2 * data->auth.ies_len + 1;
871 ie_txt = os_malloc(buflen);
872 if (ie_txt) {
873 wpa_snprintf_hex(ie_txt, buflen, data->auth.ies,
874 data->auth.ies_len);
875 }
876 }
877 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AUTH_REJECT MACSTR
878 " auth_type=%u auth_transaction=%u status_code=%u ie=%s",
879 MAC2STR(data->auth.peer), data->auth.auth_type,
880 data->auth.auth_transaction, data->auth.status_code,
881 ie_txt);
882 os_free(ie_txt);
883
884 if (data->auth.status_code !=
885 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
886 wpa_s->sme.auth_alg == data->auth.auth_type ||
887 wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
888 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
889 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
890 return;
891 }
892
893 wpas_connect_work_done(wpa_s);
894
895 switch (data->auth.auth_type) {
896 case WLAN_AUTH_OPEN:
897 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
898
899 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
900 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
901 wpa_s->current_ssid);
902 return;
903
904 case WLAN_AUTH_SHARED_KEY:
905 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
906
907 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
908 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
909 wpa_s->current_ssid);
910 return;
911
912 default:
913 return;
914 }
915 }
916
917 #ifdef CONFIG_IEEE80211R
918 if (data->auth.auth_type == WLAN_AUTH_FT) {
919 if (wpa_ft_process_response(wpa_s->wpa, data->auth.ies,
920 data->auth.ies_len, 0,
921 data->auth.peer, NULL, 0) < 0) {
922 wpa_dbg(wpa_s, MSG_DEBUG,
923 "SME: FT Authentication response processing failed");
924 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
925 MACSTR
926 " reason=%d locally_generated=1",
927 MAC2STR(wpa_s->pending_bssid),
928 WLAN_REASON_DEAUTH_LEAVING);
929 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
930 wpa_supplicant_mark_disassoc(wpa_s);
931 return;
932 }
933 }
934 #endif /* CONFIG_IEEE80211R */
935
936 sme_associate(wpa_s, ssid->mode, data->auth.peer,
937 data->auth.auth_type);
938 }
939
940
941 void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
942 const u8 *bssid, u16 auth_type)
943 {
944 struct wpa_driver_associate_params params;
945 struct ieee802_11_elems elems;
946 #ifdef CONFIG_HT_OVERRIDES
947 struct ieee80211_ht_capabilities htcaps;
948 struct ieee80211_ht_capabilities htcaps_mask;
949 #endif /* CONFIG_HT_OVERRIDES */
950 #ifdef CONFIG_VHT_OVERRIDES
951 struct ieee80211_vht_capabilities vhtcaps;
952 struct ieee80211_vht_capabilities vhtcaps_mask;
953 #endif /* CONFIG_VHT_OVERRIDES */
954
955 os_memset(&params, 0, sizeof(params));
956 params.bssid = bssid;
957 params.ssid = wpa_s->sme.ssid;
958 params.ssid_len = wpa_s->sme.ssid_len;
959 params.freq.freq = wpa_s->sme.freq;
960 params.bg_scan_period = wpa_s->current_ssid ?
961 wpa_s->current_ssid->bg_scan_period : -1;
962 params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
963 wpa_s->sme.assoc_req_ie : NULL;
964 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
965 params.pairwise_suite = wpa_s->pairwise_cipher;
966 params.group_suite = wpa_s->group_cipher;
967 params.key_mgmt_suite = wpa_s->key_mgmt;
968 params.wpa_proto = wpa_s->wpa_proto;
969 #ifdef CONFIG_HT_OVERRIDES
970 os_memset(&htcaps, 0, sizeof(htcaps));
971 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
972 params.htcaps = (u8 *) &htcaps;
973 params.htcaps_mask = (u8 *) &htcaps_mask;
974 wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, &params);
975 #endif /* CONFIG_HT_OVERRIDES */
976 #ifdef CONFIG_VHT_OVERRIDES
977 os_memset(&vhtcaps, 0, sizeof(vhtcaps));
978 os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
979 params.vhtcaps = &vhtcaps;
980 params.vhtcaps_mask = &vhtcaps_mask;
981 wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, &params);
982 #endif /* CONFIG_VHT_OVERRIDES */
983 #ifdef CONFIG_IEEE80211R
984 if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
985 params.wpa_ie = wpa_s->sme.ft_ies;
986 params.wpa_ie_len = wpa_s->sme.ft_ies_len;
987 }
988 #endif /* CONFIG_IEEE80211R */
989 params.mode = mode;
990 params.mgmt_frame_protection = wpa_s->sme.mfp;
991 params.rrm_used = wpa_s->rrm.rrm_used;
992 if (wpa_s->sme.prev_bssid_set)
993 params.prev_bssid = wpa_s->sme.prev_bssid;
994
995 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
996 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
997 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
998 params.freq.freq);
999
1000 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
1001
1002 if (params.wpa_ie == NULL ||
1003 ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
1004 < 0) {
1005 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
1006 os_memset(&elems, 0, sizeof(elems));
1007 }
1008 if (elems.rsn_ie) {
1009 params.wpa_proto = WPA_PROTO_RSN;
1010 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
1011 elems.rsn_ie_len + 2);
1012 } else if (elems.wpa_ie) {
1013 params.wpa_proto = WPA_PROTO_WPA;
1014 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
1015 elems.wpa_ie_len + 2);
1016 } else if (elems.osen) {
1017 params.wpa_proto = WPA_PROTO_OSEN;
1018 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2,
1019 elems.osen_len + 2);
1020 } else
1021 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1022 if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
1023 params.p2p = 1;
1024
1025 if (wpa_s->p2pdev->set_sta_uapsd)
1026 params.uapsd = wpa_s->p2pdev->sta_uapsd;
1027 else
1028 params.uapsd = -1;
1029
1030 if (wpa_drv_associate(wpa_s, &params) < 0) {
1031 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
1032 "driver failed");
1033 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1034 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1035 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1036 return;
1037 }
1038
1039 eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
1040 NULL);
1041 }
1042
1043
1044 int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
1045 const u8 *ies, size_t ies_len)
1046 {
1047 if (md == NULL || ies == NULL) {
1048 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
1049 os_free(wpa_s->sme.ft_ies);
1050 wpa_s->sme.ft_ies = NULL;
1051 wpa_s->sme.ft_ies_len = 0;
1052 wpa_s->sme.ft_used = 0;
1053 return 0;
1054 }
1055
1056 os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
1057 wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
1058 os_free(wpa_s->sme.ft_ies);
1059 wpa_s->sme.ft_ies = os_malloc(ies_len);
1060 if (wpa_s->sme.ft_ies == NULL)
1061 return -1;
1062 os_memcpy(wpa_s->sme.ft_ies, ies, ies_len);
1063 wpa_s->sme.ft_ies_len = ies_len;
1064 return 0;
1065 }
1066
1067
1068 static void sme_deauth(struct wpa_supplicant *wpa_s)
1069 {
1070 int bssid_changed;
1071
1072 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
1073
1074 if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
1075 WLAN_REASON_DEAUTH_LEAVING) < 0) {
1076 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
1077 "failed");
1078 }
1079 wpa_s->sme.prev_bssid_set = 0;
1080
1081 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1082 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1083 os_memset(wpa_s->bssid, 0, ETH_ALEN);
1084 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1085 if (bssid_changed)
1086 wpas_notify_bssid_changed(wpa_s);
1087 }
1088
1089
1090 void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
1091 union wpa_event_data *data)
1092 {
1093 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
1094 "status code %d", MAC2STR(wpa_s->pending_bssid),
1095 data->assoc_reject.status_code);
1096
1097 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1098
1099 #ifdef CONFIG_SAE
1100 if (wpa_s->sme.sae_pmksa_caching && wpa_s->current_ssid &&
1101 wpa_key_mgmt_sae(wpa_s->current_ssid->key_mgmt)) {
1102 wpa_dbg(wpa_s, MSG_DEBUG,
1103 "PMKSA caching attempt rejected - drop PMKSA cache entry and fall back to SAE authentication");
1104 wpa_sm_aborted_cached(wpa_s->wpa);
1105 wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid);
1106 if (wpa_s->current_bss) {
1107 struct wpa_bss *bss = wpa_s->current_bss;
1108 struct wpa_ssid *ssid = wpa_s->current_ssid;
1109
1110 wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
1111 WLAN_REASON_DEAUTH_LEAVING);
1112 wpas_connect_work_done(wpa_s);
1113 wpa_supplicant_mark_disassoc(wpa_s);
1114 wpa_supplicant_connect(wpa_s, bss, ssid);
1115 return;
1116 }
1117 }
1118 #endif /* CONFIG_SAE */
1119
1120 /*
1121 * For now, unconditionally terminate the previous authentication. In
1122 * theory, this should not be needed, but mac80211 gets quite confused
1123 * if the authentication is left pending.. Some roaming cases might
1124 * benefit from using the previous authentication, so this could be
1125 * optimized in the future.
1126 */
1127 sme_deauth(wpa_s);
1128 }
1129
1130
1131 void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
1132 union wpa_event_data *data)
1133 {
1134 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
1135 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1136 wpa_supplicant_mark_disassoc(wpa_s);
1137 }
1138
1139
1140 void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
1141 union wpa_event_data *data)
1142 {
1143 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
1144 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1145 wpa_supplicant_mark_disassoc(wpa_s);
1146 }
1147
1148
1149 void sme_event_disassoc(struct wpa_supplicant *wpa_s,
1150 struct disassoc_info *info)
1151 {
1152 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
1153 if (wpa_s->sme.prev_bssid_set) {
1154 /*
1155 * cfg80211/mac80211 can get into somewhat confused state if
1156 * the AP only disassociates us and leaves us in authenticated
1157 * state. For now, force the state to be cleared to avoid
1158 * confusing errors if we try to associate with the AP again.
1159 */
1160 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
1161 "driver state");
1162 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
1163 WLAN_REASON_DEAUTH_LEAVING);
1164 }
1165 }
1166
1167
1168 static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
1169 {
1170 struct wpa_supplicant *wpa_s = eloop_ctx;
1171 if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
1172 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
1173 sme_deauth(wpa_s);
1174 }
1175 }
1176
1177
1178 static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
1179 {
1180 struct wpa_supplicant *wpa_s = eloop_ctx;
1181 if (wpa_s->wpa_state == WPA_ASSOCIATING) {
1182 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
1183 sme_deauth(wpa_s);
1184 }
1185 }
1186
1187
1188 void sme_state_changed(struct wpa_supplicant *wpa_s)
1189 {
1190 /* Make sure timers are cleaned up appropriately. */
1191 if (wpa_s->wpa_state != WPA_ASSOCIATING)
1192 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1193 if (wpa_s->wpa_state != WPA_AUTHENTICATING)
1194 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1195 }
1196
1197
1198 void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
1199 const u8 *prev_pending_bssid)
1200 {
1201 /*
1202 * mac80211-workaround to force deauth on failed auth cmd,
1203 * requires us to remain in authenticating state to allow the
1204 * second authentication attempt to be continued properly.
1205 */
1206 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
1207 "to proceed after disconnection event");
1208 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
1209 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
1210
1211 /*
1212 * Re-arm authentication timer in case auth fails for whatever reason.
1213 */
1214 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1215 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
1216 NULL);
1217 }
1218
1219
1220 void sme_clear_on_disassoc(struct wpa_supplicant *wpa_s)
1221 {
1222 wpa_s->sme.prev_bssid_set = 0;
1223 #ifdef CONFIG_SAE
1224 wpabuf_free(wpa_s->sme.sae_token);
1225 wpa_s->sme.sae_token = NULL;
1226 sae_clear_data(&wpa_s->sme.sae);
1227 #endif /* CONFIG_SAE */
1228 #ifdef CONFIG_IEEE80211R
1229 if (wpa_s->sme.ft_ies)
1230 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
1231 #endif /* CONFIG_IEEE80211R */
1232 }
1233
1234
1235 void sme_deinit(struct wpa_supplicant *wpa_s)
1236 {
1237 os_free(wpa_s->sme.ft_ies);
1238 wpa_s->sme.ft_ies = NULL;
1239 wpa_s->sme.ft_ies_len = 0;
1240 #ifdef CONFIG_IEEE80211W
1241 sme_stop_sa_query(wpa_s);
1242 #endif /* CONFIG_IEEE80211W */
1243 sme_clear_on_disassoc(wpa_s);
1244
1245 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1246 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1247 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1248 }
1249
1250
1251 static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
1252 const u8 *chan_list, u8 num_channels,
1253 u8 num_intol)
1254 {
1255 struct ieee80211_2040_bss_coex_ie *bc_ie;
1256 struct ieee80211_2040_intol_chan_report *ic_report;
1257 struct wpabuf *buf;
1258
1259 wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR
1260 " (num_channels=%u num_intol=%u)",
1261 MAC2STR(wpa_s->bssid), num_channels, num_intol);
1262 wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels",
1263 chan_list, num_channels);
1264
1265 buf = wpabuf_alloc(2 + /* action.category + action_code */
1266 sizeof(struct ieee80211_2040_bss_coex_ie) +
1267 sizeof(struct ieee80211_2040_intol_chan_report) +
1268 num_channels);
1269 if (buf == NULL)
1270 return;
1271
1272 wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
1273 wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
1274
1275 bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
1276 bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
1277 bc_ie->length = 1;
1278 if (num_intol)
1279 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
1280
1281 if (num_channels > 0) {
1282 ic_report = wpabuf_put(buf, sizeof(*ic_report));
1283 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
1284 ic_report->length = num_channels + 1;
1285 ic_report->op_class = 0;
1286 os_memcpy(wpabuf_put(buf, num_channels), chan_list,
1287 num_channels);
1288 }
1289
1290 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
1291 wpa_s->own_addr, wpa_s->bssid,
1292 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
1293 wpa_msg(wpa_s, MSG_INFO,
1294 "SME: Failed to send 20/40 BSS Coexistence frame");
1295 }
1296
1297 wpabuf_free(buf);
1298 }
1299
1300
1301 int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
1302 {
1303 struct wpa_bss *bss;
1304 const u8 *ie;
1305 u16 ht_cap;
1306 u8 chan_list[P2P_MAX_CHANNELS], channel;
1307 u8 num_channels = 0, num_intol = 0, i;
1308
1309 if (!wpa_s->sme.sched_obss_scan)
1310 return 0;
1311
1312 wpa_s->sme.sched_obss_scan = 0;
1313 if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
1314 return 1;
1315
1316 /*
1317 * Check whether AP uses regulatory triplet or channel triplet in
1318 * country info. Right now the operating class of the BSS channel
1319 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
1320 * based on the assumption that operating class triplet is not used in
1321 * beacon frame. If the First Channel Number/Operating Extension
1322 * Identifier octet has a positive integer value of 201 or greater,
1323 * then its operating class triplet.
1324 *
1325 * TODO: If Supported Operating Classes element is present in beacon
1326 * frame, have to lookup operating class in Annex E and fill them in
1327 * 2040 coex frame.
1328 */
1329 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
1330 if (ie && (ie[1] >= 6) && (ie[5] >= 201))
1331 return 1;
1332
1333 os_memset(chan_list, 0, sizeof(chan_list));
1334
1335 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1336 /* Skip other band bss */
1337 enum hostapd_hw_mode mode;
1338 mode = ieee80211_freq_to_chan(bss->freq, &channel);
1339 if (mode != HOSTAPD_MODE_IEEE80211G &&
1340 mode != HOSTAPD_MODE_IEEE80211B)
1341 continue;
1342
1343 ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
1344 ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
1345 wpa_printf(MSG_DEBUG, "SME OBSS scan BSS " MACSTR
1346 " freq=%u chan=%u ht_cap=0x%x",
1347 MAC2STR(bss->bssid), bss->freq, channel, ht_cap);
1348
1349 if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
1350 if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
1351 num_intol++;
1352
1353 /* Check whether the channel is already considered */
1354 for (i = 0; i < num_channels; i++) {
1355 if (channel == chan_list[i])
1356 break;
1357 }
1358 if (i != num_channels)
1359 continue;
1360
1361 chan_list[num_channels++] = channel;
1362 }
1363 }
1364
1365 sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
1366 return 1;
1367 }
1368
1369
1370 static void wpa_obss_scan_freqs_list(struct wpa_supplicant *wpa_s,
1371 struct wpa_driver_scan_params *params)
1372 {
1373 /* Include only affected channels */
1374 struct hostapd_hw_modes *mode;
1375 int count, i;
1376 int start, end;
1377
1378 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
1379 HOSTAPD_MODE_IEEE80211G);
1380 if (mode == NULL) {
1381 /* No channels supported in this band - use empty list */
1382 params->freqs = os_zalloc(sizeof(int));
1383 return;
1384 }
1385
1386 if (wpa_s->sme.ht_sec_chan == HT_SEC_CHAN_UNKNOWN &&
1387 wpa_s->current_bss) {
1388 const u8 *ie;
1389
1390 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_OPERATION);
1391 if (ie && ie[1] >= 2) {
1392 u8 o;
1393
1394 o = ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK;
1395 if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
1396 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_ABOVE;
1397 else if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
1398 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_BELOW;
1399 }
1400 }
1401
1402 start = wpa_s->assoc_freq - 10;
1403 end = wpa_s->assoc_freq + 10;
1404 switch (wpa_s->sme.ht_sec_chan) {
1405 case HT_SEC_CHAN_UNKNOWN:
1406 /* HT40+ possible on channels 1..9 */
1407 if (wpa_s->assoc_freq <= 2452)
1408 start -= 20;
1409 /* HT40- possible on channels 5-13 */
1410 if (wpa_s->assoc_freq >= 2432)
1411 end += 20;
1412 break;
1413 case HT_SEC_CHAN_ABOVE:
1414 end += 20;
1415 break;
1416 case HT_SEC_CHAN_BELOW:
1417 start -= 20;
1418 break;
1419 }
1420 wpa_printf(MSG_DEBUG,
1421 "OBSS: assoc_freq %d possible affected range %d-%d",
1422 wpa_s->assoc_freq, start, end);
1423
1424 params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
1425 if (params->freqs == NULL)
1426 return;
1427 for (count = 0, i = 0; i < mode->num_channels; i++) {
1428 int freq;
1429
1430 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
1431 continue;
1432 freq = mode->channels[i].freq;
1433 if (freq - 10 >= end || freq + 10 <= start)
1434 continue; /* not affected */
1435 params->freqs[count++] = freq;
1436 }
1437 }
1438
1439
1440 static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1441 {
1442 struct wpa_supplicant *wpa_s = eloop_ctx;
1443 struct wpa_driver_scan_params params;
1444
1445 if (!wpa_s->current_bss) {
1446 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
1447 return;
1448 }
1449
1450 os_memset(&params, 0, sizeof(params));
1451 wpa_obss_scan_freqs_list(wpa_s, &params);
1452 params.low_priority = 1;
1453 wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
1454
1455 if (wpa_supplicant_trigger_scan(wpa_s, &params))
1456 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
1457 else
1458 wpa_s->sme.sched_obss_scan = 1;
1459 os_free(params.freqs);
1460
1461 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1462 sme_obss_scan_timeout, wpa_s, NULL);
1463 }
1464
1465
1466 void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
1467 {
1468 const u8 *ie;
1469 struct wpa_bss *bss = wpa_s->current_bss;
1470 struct wpa_ssid *ssid = wpa_s->current_ssid;
1471 struct hostapd_hw_modes *hw_mode = NULL;
1472 int i;
1473
1474 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1475 wpa_s->sme.sched_obss_scan = 0;
1476 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_UNKNOWN;
1477 if (!enable)
1478 return;
1479
1480 /*
1481 * Schedule OBSS scan if driver is using station SME in wpa_supplicant
1482 * or it expects OBSS scan to be performed by wpa_supplicant.
1483 */
1484 if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
1485 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
1486 ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA)
1487 return;
1488
1489 if (!wpa_s->hw.modes)
1490 return;
1491
1492 /* only HT caps in 11g mode are relevant */
1493 for (i = 0; i < wpa_s->hw.num_modes; i++) {
1494 hw_mode = &wpa_s->hw.modes[i];
1495 if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
1496 break;
1497 }
1498
1499 /* Driver does not support HT40 for 11g or doesn't have 11g. */
1500 if (i == wpa_s->hw.num_modes || !hw_mode ||
1501 !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1502 return;
1503
1504 if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
1505 return; /* Not associated on 2.4 GHz band */
1506
1507 /* Check whether AP supports HT40 */
1508 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
1509 if (!ie || ie[1] < 2 ||
1510 !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1511 return; /* AP does not support HT40 */
1512
1513 ie = wpa_bss_get_ie(wpa_s->current_bss,
1514 WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
1515 if (!ie || ie[1] < 14)
1516 return; /* AP does not request OBSS scans */
1517
1518 wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
1519 if (wpa_s->sme.obss_scan_int < 10) {
1520 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
1521 "replaced with the minimum 10 sec",
1522 wpa_s->sme.obss_scan_int);
1523 wpa_s->sme.obss_scan_int = 10;
1524 }
1525 wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
1526 wpa_s->sme.obss_scan_int);
1527 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1528 sme_obss_scan_timeout, wpa_s, NULL);
1529 }
1530
1531
1532 #ifdef CONFIG_IEEE80211W
1533
1534 static const unsigned int sa_query_max_timeout = 1000;
1535 static const unsigned int sa_query_retry_timeout = 201;
1536
1537 static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
1538 {
1539 u32 tu;
1540 struct os_reltime now, passed;
1541 os_get_reltime(&now);
1542 os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed);
1543 tu = (passed.sec * 1000000 + passed.usec) / 1024;
1544 if (sa_query_max_timeout < tu) {
1545 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
1546 sme_stop_sa_query(wpa_s);
1547 wpa_supplicant_deauthenticate(
1548 wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
1549 return 1;
1550 }
1551
1552 return 0;
1553 }
1554
1555
1556 static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
1557 const u8 *trans_id)
1558 {
1559 u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN];
1560 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
1561 MACSTR, MAC2STR(wpa_s->bssid));
1562 wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
1563 trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1564 req[0] = WLAN_ACTION_SA_QUERY;
1565 req[1] = WLAN_SA_QUERY_REQUEST;
1566 os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1567 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
1568 wpa_s->own_addr, wpa_s->bssid,
1569 req, sizeof(req), 0) < 0)
1570 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
1571 "Request");
1572 }
1573
1574
1575 static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
1576 {
1577 struct wpa_supplicant *wpa_s = eloop_ctx;
1578 unsigned int timeout, sec, usec;
1579 u8 *trans_id, *nbuf;
1580
1581 if (wpa_s->sme.sa_query_count > 0 &&
1582 sme_check_sa_query_timeout(wpa_s))
1583 return;
1584
1585 nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
1586 wpa_s->sme.sa_query_count + 1,
1587 WLAN_SA_QUERY_TR_ID_LEN);
1588 if (nbuf == NULL) {
1589 sme_stop_sa_query(wpa_s);
1590 return;
1591 }
1592 if (wpa_s->sme.sa_query_count == 0) {
1593 /* Starting a new SA Query procedure */
1594 os_get_reltime(&wpa_s->sme.sa_query_start);
1595 }
1596 trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
1597 wpa_s->sme.sa_query_trans_id = nbuf;
1598 wpa_s->sme.sa_query_count++;
1599
1600 if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) {
1601 wpa_printf(MSG_DEBUG, "Could not generate SA Query ID");
1602 sme_stop_sa_query(wpa_s);
1603 return;
1604 }
1605
1606 timeout = sa_query_retry_timeout;
1607 sec = ((timeout / 1000) * 1024) / 1000;
1608 usec = (timeout % 1000) * 1024;
1609 eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
1610
1611 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
1612 wpa_s->sme.sa_query_count);
1613
1614 sme_send_sa_query_req(wpa_s, trans_id);
1615 }
1616
1617
1618 static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
1619 {
1620 sme_sa_query_timer(wpa_s, NULL);
1621 }
1622
1623
1624 static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
1625 {
1626 eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
1627 os_free(wpa_s->sme.sa_query_trans_id);
1628 wpa_s->sme.sa_query_trans_id = NULL;
1629 wpa_s->sme.sa_query_count = 0;
1630 }
1631
1632
1633 void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
1634 const u8 *da, u16 reason_code)
1635 {
1636 struct wpa_ssid *ssid;
1637 struct os_reltime now;
1638
1639 if (wpa_s->wpa_state != WPA_COMPLETED)
1640 return;
1641 ssid = wpa_s->current_ssid;
1642 if (wpas_get_ssid_pmf(wpa_s, ssid) == NO_MGMT_FRAME_PROTECTION)
1643 return;
1644 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1645 return;
1646 if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
1647 reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
1648 return;
1649 if (wpa_s->sme.sa_query_count > 0)
1650 return;
1651
1652 os_get_reltime(&now);
1653 if (wpa_s->sme.last_unprot_disconnect.sec &&
1654 !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10))
1655 return; /* limit SA Query procedure frequency */
1656 wpa_s->sme.last_unprot_disconnect = now;
1657
1658 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
1659 "possible AP/STA state mismatch - trigger SA Query");
1660 sme_start_sa_query(wpa_s);
1661 }
1662
1663
1664 void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
1665 const u8 *data, size_t len)
1666 {
1667 int i;
1668
1669 if (wpa_s->sme.sa_query_trans_id == NULL ||
1670 len < 1 + WLAN_SA_QUERY_TR_ID_LEN ||
1671 data[0] != WLAN_SA_QUERY_RESPONSE)
1672 return;
1673 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
1674 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
1675
1676 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1677 return;
1678
1679 for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
1680 if (os_memcmp(wpa_s->sme.sa_query_trans_id +
1681 i * WLAN_SA_QUERY_TR_ID_LEN,
1682 data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
1683 break;
1684 }
1685
1686 if (i >= wpa_s->sme.sa_query_count) {
1687 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
1688 "transaction identifier found");
1689 return;
1690 }
1691
1692 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
1693 "from " MACSTR, MAC2STR(sa));
1694 sme_stop_sa_query(wpa_s);
1695 }
1696
1697 #endif /* CONFIG_IEEE80211W */
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