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[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 "common/ocv.h"
16 #include "common/hw_features_common.h"
17 #include "eapol_supp/eapol_supp_sm.h"
18 #include "common/wpa_common.h"
19 #include "common/sae.h"
20 #include "common/dpp.h"
21 #include "rsn_supp/wpa.h"
22 #include "rsn_supp/pmksa_cache.h"
23 #include "config.h"
24 #include "wpa_supplicant_i.h"
25 #include "driver_i.h"
26 #include "wpas_glue.h"
27 #include "wps_supplicant.h"
28 #include "p2p_supplicant.h"
29 #include "notify.h"
30 #include "bss.h"
31 #include "scan.h"
32 #include "sme.h"
33 #include "hs20_supplicant.h"
34
35 #define SME_AUTH_TIMEOUT 5
36 #define SME_ASSOC_TIMEOUT 5
37
38 static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx);
39 static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx);
40 static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx);
41 static void sme_stop_sa_query(struct wpa_supplicant *wpa_s);
42
43
44 #ifdef CONFIG_SAE
45
46 static int index_within_array(const int *array, int idx)
47 {
48 int i;
49 for (i = 0; i < idx; i++) {
50 if (array[i] <= 0)
51 return 0;
52 }
53 return 1;
54 }
55
56
57 static int sme_set_sae_group(struct wpa_supplicant *wpa_s)
58 {
59 int *groups = wpa_s->conf->sae_groups;
60 int default_groups[] = { 19, 20, 21, 0 };
61
62 if (!groups || groups[0] <= 0)
63 groups = default_groups;
64
65 /* Configuration may have changed, so validate current index */
66 if (!index_within_array(groups, wpa_s->sme.sae_group_index))
67 return -1;
68
69 for (;;) {
70 int group = groups[wpa_s->sme.sae_group_index];
71 if (group <= 0)
72 break;
73 if (sae_set_group(&wpa_s->sme.sae, group) == 0) {
74 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected SAE group %d",
75 wpa_s->sme.sae.group);
76 return 0;
77 }
78 wpa_s->sme.sae_group_index++;
79 }
80
81 return -1;
82 }
83
84
85 static struct wpabuf * sme_auth_build_sae_commit(struct wpa_supplicant *wpa_s,
86 struct wpa_ssid *ssid,
87 const u8 *bssid, int external,
88 int reuse, int *ret_use_pt)
89 {
90 struct wpabuf *buf;
91 size_t len;
92 const char *password;
93 struct wpa_bss *bss;
94 int use_pt = 0;
95
96 if (ret_use_pt)
97 *ret_use_pt = 0;
98
99 #ifdef CONFIG_TESTING_OPTIONS
100 if (wpa_s->sae_commit_override) {
101 wpa_printf(MSG_DEBUG, "SAE: TESTING - commit override");
102 buf = wpabuf_alloc(4 + wpabuf_len(wpa_s->sae_commit_override));
103 if (!buf)
104 return NULL;
105 if (!external) {
106 wpabuf_put_le16(buf, 1); /* Transaction seq# */
107 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
108 }
109 wpabuf_put_buf(buf, wpa_s->sae_commit_override);
110 return buf;
111 }
112 #endif /* CONFIG_TESTING_OPTIONS */
113
114 password = ssid->sae_password;
115 if (!password)
116 password = ssid->passphrase;
117 if (!password) {
118 wpa_printf(MSG_DEBUG, "SAE: No password available");
119 return NULL;
120 }
121
122 if (reuse && wpa_s->sme.sae.tmp &&
123 os_memcmp(bssid, wpa_s->sme.sae.tmp->bssid, ETH_ALEN) == 0) {
124 wpa_printf(MSG_DEBUG,
125 "SAE: Reuse previously generated PWE on a retry with the same AP");
126 use_pt = wpa_s->sme.sae.tmp->h2e;
127 goto reuse_data;
128 }
129 if (sme_set_sae_group(wpa_s) < 0) {
130 wpa_printf(MSG_DEBUG, "SAE: Failed to select group");
131 return NULL;
132 }
133
134 if (ssid->sae_password_id && wpa_s->conf->sae_pwe != 3)
135 use_pt = 1;
136
137 if (use_pt || wpa_s->conf->sae_pwe == 1 || wpa_s->conf->sae_pwe == 2) {
138 bss = wpa_bss_get_bssid_latest(wpa_s, bssid);
139 if (bss) {
140 const u8 *rsnxe;
141
142 rsnxe = wpa_bss_get_ie(bss, WLAN_EID_RSNX);
143 if (rsnxe && rsnxe[1] >= 1)
144 use_pt = !!(rsnxe[2] &
145 BIT(WLAN_RSNX_CAPAB_SAE_H2E));
146 }
147
148 if ((wpa_s->conf->sae_pwe == 1 || ssid->sae_password_id) &&
149 wpa_s->conf->sae_pwe != 3 &&
150 !use_pt) {
151 wpa_printf(MSG_DEBUG,
152 "SAE: Cannot use H2E with the selected AP");
153 return NULL;
154 }
155 }
156
157 if (use_pt &&
158 sae_prepare_commit_pt(&wpa_s->sme.sae, ssid->pt,
159 wpa_s->own_addr, bssid,
160 wpa_s->sme.sae_rejected_groups) < 0)
161 return NULL;
162 if (!use_pt &&
163 sae_prepare_commit(wpa_s->own_addr, bssid,
164 (u8 *) password, os_strlen(password),
165 ssid->sae_password_id,
166 &wpa_s->sme.sae) < 0) {
167 wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE");
168 return NULL;
169 }
170 if (wpa_s->sme.sae.tmp)
171 os_memcpy(wpa_s->sme.sae.tmp->bssid, bssid, ETH_ALEN);
172
173 reuse_data:
174 len = wpa_s->sme.sae_token ? 3 + wpabuf_len(wpa_s->sme.sae_token) : 0;
175 if (ssid->sae_password_id)
176 len += 4 + os_strlen(ssid->sae_password_id);
177 buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + len);
178 if (buf == NULL)
179 return NULL;
180 if (!external) {
181 wpabuf_put_le16(buf, 1); /* Transaction seq# */
182 wpabuf_put_le16(buf, use_pt ? WLAN_STATUS_SAE_HASH_TO_ELEMENT :
183 WLAN_STATUS_SUCCESS);
184 }
185 if (sae_write_commit(&wpa_s->sme.sae, buf, wpa_s->sme.sae_token,
186 ssid->sae_password_id) < 0) {
187 wpabuf_free(buf);
188 return NULL;
189 }
190 if (ret_use_pt)
191 *ret_use_pt = use_pt;
192
193 return buf;
194 }
195
196
197 static struct wpabuf * sme_auth_build_sae_confirm(struct wpa_supplicant *wpa_s,
198 int external)
199 {
200 struct wpabuf *buf;
201
202 buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN);
203 if (buf == NULL)
204 return NULL;
205
206 if (!external) {
207 wpabuf_put_le16(buf, 2); /* Transaction seq# */
208 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
209 }
210 sae_write_confirm(&wpa_s->sme.sae, buf);
211
212 return buf;
213 }
214
215 #endif /* CONFIG_SAE */
216
217
218 /**
219 * sme_auth_handle_rrm - Handle RRM aspects of current authentication attempt
220 * @wpa_s: Pointer to wpa_supplicant data
221 * @bss: Pointer to the bss which is the target of authentication attempt
222 */
223 static void sme_auth_handle_rrm(struct wpa_supplicant *wpa_s,
224 struct wpa_bss *bss)
225 {
226 const u8 rrm_ie_len = 5;
227 u8 *pos;
228 const u8 *rrm_ie;
229
230 wpa_s->rrm.rrm_used = 0;
231
232 wpa_printf(MSG_DEBUG,
233 "RRM: Determining whether RRM can be used - device support: 0x%x",
234 wpa_s->drv_rrm_flags);
235
236 rrm_ie = wpa_bss_get_ie(bss, WLAN_EID_RRM_ENABLED_CAPABILITIES);
237 if (!rrm_ie || !(bss->caps & IEEE80211_CAP_RRM)) {
238 wpa_printf(MSG_DEBUG, "RRM: No RRM in network");
239 return;
240 }
241
242 if (!((wpa_s->drv_rrm_flags &
243 WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) &&
244 (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET)) &&
245 !(wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_SUPPORT_RRM)) {
246 wpa_printf(MSG_DEBUG,
247 "RRM: Insufficient RRM support in driver - do not use RRM");
248 return;
249 }
250
251 if (sizeof(wpa_s->sme.assoc_req_ie) <
252 wpa_s->sme.assoc_req_ie_len + rrm_ie_len + 2) {
253 wpa_printf(MSG_INFO,
254 "RRM: Unable to use RRM, no room for RRM IE");
255 return;
256 }
257
258 wpa_printf(MSG_DEBUG, "RRM: Adding RRM IE to Association Request");
259 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
260 os_memset(pos, 0, 2 + rrm_ie_len);
261 *pos++ = WLAN_EID_RRM_ENABLED_CAPABILITIES;
262 *pos++ = rrm_ie_len;
263
264 /* Set supported capabilites flags */
265 if (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION)
266 *pos |= WLAN_RRM_CAPS_LINK_MEASUREMENT;
267
268 *pos |= WLAN_RRM_CAPS_BEACON_REPORT_PASSIVE |
269 WLAN_RRM_CAPS_BEACON_REPORT_ACTIVE |
270 WLAN_RRM_CAPS_BEACON_REPORT_TABLE;
271
272 if (wpa_s->lci)
273 pos[1] |= WLAN_RRM_CAPS_LCI_MEASUREMENT;
274
275 wpa_s->sme.assoc_req_ie_len += rrm_ie_len + 2;
276 wpa_s->rrm.rrm_used = 1;
277 }
278
279
280 static void sme_send_authentication(struct wpa_supplicant *wpa_s,
281 struct wpa_bss *bss, struct wpa_ssid *ssid,
282 int start)
283 {
284 struct wpa_driver_auth_params params;
285 struct wpa_ssid *old_ssid;
286 #ifdef CONFIG_IEEE80211R
287 const u8 *ie;
288 #endif /* CONFIG_IEEE80211R */
289 #if defined(CONFIG_IEEE80211R) || defined(CONFIG_FILS)
290 const u8 *md = NULL;
291 #endif /* CONFIG_IEEE80211R || CONFIG_FILS */
292 int bssid_changed;
293 struct wpabuf *resp = NULL;
294 u8 ext_capab[18];
295 int ext_capab_len;
296 int skip_auth;
297 u8 *wpa_ie;
298 size_t wpa_ie_len;
299 #ifdef CONFIG_MBO
300 const u8 *mbo_ie;
301 #endif /* CONFIG_MBO */
302 int omit_rsnxe = 0;
303
304 if (bss == NULL) {
305 wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for "
306 "the network");
307 wpas_connect_work_done(wpa_s);
308 return;
309 }
310
311 skip_auth = wpa_s->conf->reassoc_same_bss_optim &&
312 wpa_s->reassoc_same_bss;
313 wpa_s->current_bss = bss;
314
315 os_memset(&params, 0, sizeof(params));
316 wpa_s->reassociate = 0;
317
318 params.freq = bss->freq;
319 params.bssid = bss->bssid;
320 params.ssid = bss->ssid;
321 params.ssid_len = bss->ssid_len;
322 params.p2p = ssid->p2p_group;
323
324 if (wpa_s->sme.ssid_len != params.ssid_len ||
325 os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
326 wpa_s->sme.prev_bssid_set = 0;
327
328 wpa_s->sme.freq = params.freq;
329 os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
330 wpa_s->sme.ssid_len = params.ssid_len;
331
332 params.auth_alg = WPA_AUTH_ALG_OPEN;
333 #ifdef IEEE8021X_EAPOL
334 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
335 if (ssid->leap) {
336 if (ssid->non_leap == 0)
337 params.auth_alg = WPA_AUTH_ALG_LEAP;
338 else
339 params.auth_alg |= WPA_AUTH_ALG_LEAP;
340 }
341 }
342 #endif /* IEEE8021X_EAPOL */
343 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
344 params.auth_alg);
345 if (ssid->auth_alg) {
346 params.auth_alg = ssid->auth_alg;
347 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
348 "0x%x", params.auth_alg);
349 }
350 #ifdef CONFIG_SAE
351 wpa_s->sme.sae_pmksa_caching = 0;
352 if (wpa_key_mgmt_sae(ssid->key_mgmt)) {
353 const u8 *rsn;
354 struct wpa_ie_data ied;
355
356 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
357 if (!rsn) {
358 wpa_dbg(wpa_s, MSG_DEBUG,
359 "SAE enabled, but target BSS does not advertise RSN");
360 #ifdef CONFIG_DPP
361 } else if (wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 &&
362 (ssid->key_mgmt & WPA_KEY_MGMT_DPP) &&
363 (ied.key_mgmt & WPA_KEY_MGMT_DPP)) {
364 wpa_dbg(wpa_s, MSG_DEBUG, "Prefer DPP over SAE when both are enabled");
365 #endif /* CONFIG_DPP */
366 } else if (wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 &&
367 wpa_key_mgmt_sae(ied.key_mgmt)) {
368 wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg");
369 params.auth_alg = WPA_AUTH_ALG_SAE;
370 } else {
371 wpa_dbg(wpa_s, MSG_DEBUG,
372 "SAE enabled, but target BSS does not advertise SAE AKM for RSN");
373 }
374 }
375 #endif /* CONFIG_SAE */
376
377 #ifdef CONFIG_WEP
378 {
379 int i;
380
381 for (i = 0; i < NUM_WEP_KEYS; i++) {
382 if (ssid->wep_key_len[i])
383 params.wep_key[i] = ssid->wep_key[i];
384 params.wep_key_len[i] = ssid->wep_key_len[i];
385 }
386 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
387 }
388 #endif /* CONFIG_WEP */
389
390 if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
391 wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
392 wpa_key_mgmt_wpa(ssid->key_mgmt)) {
393 int try_opportunistic;
394 const u8 *cache_id = NULL;
395
396 try_opportunistic = (ssid->proactive_key_caching < 0 ?
397 wpa_s->conf->okc :
398 ssid->proactive_key_caching) &&
399 (ssid->proto & WPA_PROTO_RSN);
400 #ifdef CONFIG_FILS
401 if (wpa_key_mgmt_fils(ssid->key_mgmt))
402 cache_id = wpa_bss_get_fils_cache_id(bss);
403 #endif /* CONFIG_FILS */
404 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
405 wpa_s->current_ssid,
406 try_opportunistic, cache_id,
407 0) == 0)
408 eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
409 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
410 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
411 wpa_s->sme.assoc_req_ie,
412 &wpa_s->sme.assoc_req_ie_len)) {
413 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
414 "key management and encryption suites");
415 wpas_connect_work_done(wpa_s);
416 return;
417 }
418 #ifdef CONFIG_HS20
419 } else if (wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE) &&
420 (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)) {
421 /* No PMKSA caching, but otherwise similar to RSN/WPA */
422 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
423 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
424 wpa_s->sme.assoc_req_ie,
425 &wpa_s->sme.assoc_req_ie_len)) {
426 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
427 "key management and encryption suites");
428 wpas_connect_work_done(wpa_s);
429 return;
430 }
431 #endif /* CONFIG_HS20 */
432 } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
433 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) {
434 /*
435 * Both WPA and non-WPA IEEE 802.1X enabled in configuration -
436 * use non-WPA since the scan results did not indicate that the
437 * AP is using WPA or WPA2.
438 */
439 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
440 wpa_s->sme.assoc_req_ie_len = 0;
441 } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
442 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
443 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
444 wpa_s->sme.assoc_req_ie,
445 &wpa_s->sme.assoc_req_ie_len)) {
446 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
447 "key management and encryption suites (no "
448 "scan results)");
449 wpas_connect_work_done(wpa_s);
450 return;
451 }
452 #ifdef CONFIG_WPS
453 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
454 struct wpabuf *wps_ie;
455 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
456 if (wps_ie && wpabuf_len(wps_ie) <=
457 sizeof(wpa_s->sme.assoc_req_ie)) {
458 wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
459 os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
460 wpa_s->sme.assoc_req_ie_len);
461 } else
462 wpa_s->sme.assoc_req_ie_len = 0;
463 wpabuf_free(wps_ie);
464 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
465 #endif /* CONFIG_WPS */
466 } else {
467 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
468 wpa_s->sme.assoc_req_ie_len = 0;
469 }
470
471 /* In case the WPA vendor IE is used, it should be placed after all the
472 * non-vendor IEs, as the lower layer expects the IEs to be ordered as
473 * defined in the standard. Store the WPA IE so it can later be
474 * inserted at the correct location.
475 */
476 wpa_ie = NULL;
477 wpa_ie_len = 0;
478 if (wpa_s->wpa_proto == WPA_PROTO_WPA) {
479 wpa_ie = os_memdup(wpa_s->sme.assoc_req_ie,
480 wpa_s->sme.assoc_req_ie_len);
481 if (wpa_ie) {
482 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Storing WPA IE");
483
484 wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
485 wpa_s->sme.assoc_req_ie_len = 0;
486 } else {
487 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed copy WPA IE");
488 wpas_connect_work_done(wpa_s);
489 return;
490 }
491 }
492
493 #ifdef CONFIG_IEEE80211R
494 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
495 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
496 md = ie + 2;
497 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
498 if (md && (!wpa_key_mgmt_ft(ssid->key_mgmt) ||
499 !wpa_key_mgmt_ft(wpa_s->key_mgmt)))
500 md = NULL;
501 if (md) {
502 /* Prepare for the next transition */
503 wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
504 }
505
506 if (md) {
507 wpa_dbg(wpa_s, MSG_DEBUG, "SME: FT mobility domain %02x%02x",
508 md[0], md[1]);
509
510 omit_rsnxe = !wpa_bss_get_ie(bss, WLAN_EID_RSNX);
511 if (wpa_s->sme.assoc_req_ie_len + 5 <
512 sizeof(wpa_s->sme.assoc_req_ie)) {
513 struct rsn_mdie *mdie;
514 u8 *pos = wpa_s->sme.assoc_req_ie +
515 wpa_s->sme.assoc_req_ie_len;
516 *pos++ = WLAN_EID_MOBILITY_DOMAIN;
517 *pos++ = sizeof(*mdie);
518 mdie = (struct rsn_mdie *) pos;
519 os_memcpy(mdie->mobility_domain, md,
520 MOBILITY_DOMAIN_ID_LEN);
521 mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
522 wpa_s->sme.assoc_req_ie_len += 5;
523 }
524
525 if (wpa_s->sme.prev_bssid_set && wpa_s->sme.ft_used &&
526 os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
527 wpa_sm_has_ptk(wpa_s->wpa)) {
528 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT "
529 "over-the-air");
530 params.auth_alg = WPA_AUTH_ALG_FT;
531 params.ie = wpa_s->sme.ft_ies;
532 params.ie_len = wpa_s->sme.ft_ies_len;
533 }
534 }
535 #endif /* CONFIG_IEEE80211R */
536
537 wpa_s->sme.mfp = wpas_get_ssid_pmf(wpa_s, ssid);
538 if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) {
539 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
540 struct wpa_ie_data _ie;
541 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
542 _ie.capabilities &
543 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
544 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports "
545 "MFP: require MFP");
546 wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
547 }
548 }
549
550 #ifdef CONFIG_P2P
551 if (wpa_s->global->p2p) {
552 u8 *pos;
553 size_t len;
554 int res;
555 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
556 len = sizeof(wpa_s->sme.assoc_req_ie) -
557 wpa_s->sme.assoc_req_ie_len;
558 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
559 ssid->p2p_group);
560 if (res >= 0)
561 wpa_s->sme.assoc_req_ie_len += res;
562 }
563 #endif /* CONFIG_P2P */
564
565 #ifdef CONFIG_FST
566 if (wpa_s->fst_ies) {
567 int fst_ies_len = wpabuf_len(wpa_s->fst_ies);
568
569 if (wpa_s->sme.assoc_req_ie_len + fst_ies_len <=
570 sizeof(wpa_s->sme.assoc_req_ie)) {
571 os_memcpy(wpa_s->sme.assoc_req_ie +
572 wpa_s->sme.assoc_req_ie_len,
573 wpabuf_head(wpa_s->fst_ies),
574 fst_ies_len);
575 wpa_s->sme.assoc_req_ie_len += fst_ies_len;
576 }
577 }
578 #endif /* CONFIG_FST */
579
580 sme_auth_handle_rrm(wpa_s, bss);
581
582 wpa_s->sme.assoc_req_ie_len += wpas_supp_op_class_ie(
583 wpa_s, ssid, bss,
584 wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
585 sizeof(wpa_s->sme.assoc_req_ie) - wpa_s->sme.assoc_req_ie_len);
586
587 if (params.p2p)
588 wpa_drv_get_ext_capa(wpa_s, WPA_IF_P2P_CLIENT);
589 else
590 wpa_drv_get_ext_capa(wpa_s, WPA_IF_STATION);
591
592 ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab,
593 sizeof(ext_capab));
594 if (ext_capab_len > 0) {
595 u8 *pos = wpa_s->sme.assoc_req_ie;
596 if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
597 pos += 2 + pos[1];
598 os_memmove(pos + ext_capab_len, pos,
599 wpa_s->sme.assoc_req_ie_len -
600 (pos - wpa_s->sme.assoc_req_ie));
601 wpa_s->sme.assoc_req_ie_len += ext_capab_len;
602 os_memcpy(pos, ext_capab, ext_capab_len);
603 }
604
605 #ifdef CONFIG_TESTING_OPTIONS
606 if (wpa_s->rsnxe_override_assoc &&
607 wpabuf_len(wpa_s->rsnxe_override_assoc) <=
608 sizeof(wpa_s->sme.assoc_req_ie) - wpa_s->sme.assoc_req_ie_len) {
609 wpa_printf(MSG_DEBUG, "TESTING: RSNXE AssocReq override");
610 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
611 wpabuf_head(wpa_s->rsnxe_override_assoc),
612 wpabuf_len(wpa_s->rsnxe_override_assoc));
613 wpa_s->sme.assoc_req_ie_len +=
614 wpabuf_len(wpa_s->rsnxe_override_assoc);
615 } else
616 #endif /* CONFIG_TESTING_OPTIONS */
617 if (wpa_s->rsnxe_len > 0 &&
618 wpa_s->rsnxe_len <=
619 sizeof(wpa_s->sme.assoc_req_ie) - wpa_s->sme.assoc_req_ie_len &&
620 !omit_rsnxe) {
621 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
622 wpa_s->rsnxe, wpa_s->rsnxe_len);
623 wpa_s->sme.assoc_req_ie_len += wpa_s->rsnxe_len;
624 }
625
626 #ifdef CONFIG_HS20
627 if (is_hs20_network(wpa_s, ssid, bss)) {
628 struct wpabuf *hs20;
629
630 hs20 = wpabuf_alloc(20 + MAX_ROAMING_CONS_OI_LEN);
631 if (hs20) {
632 int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid);
633 size_t len;
634
635 wpas_hs20_add_indication(hs20, pps_mo_id,
636 get_hs20_version(bss));
637 wpas_hs20_add_roam_cons_sel(hs20, ssid);
638 len = sizeof(wpa_s->sme.assoc_req_ie) -
639 wpa_s->sme.assoc_req_ie_len;
640 if (wpabuf_len(hs20) <= len) {
641 os_memcpy(wpa_s->sme.assoc_req_ie +
642 wpa_s->sme.assoc_req_ie_len,
643 wpabuf_head(hs20), wpabuf_len(hs20));
644 wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
645 }
646 wpabuf_free(hs20);
647 }
648 }
649 #endif /* CONFIG_HS20 */
650
651 if (wpa_ie) {
652 size_t len;
653
654 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Reinsert WPA IE");
655
656 len = sizeof(wpa_s->sme.assoc_req_ie) -
657 wpa_s->sme.assoc_req_ie_len;
658
659 if (len > wpa_ie_len) {
660 os_memcpy(wpa_s->sme.assoc_req_ie +
661 wpa_s->sme.assoc_req_ie_len,
662 wpa_ie, wpa_ie_len);
663 wpa_s->sme.assoc_req_ie_len += wpa_ie_len;
664 } else {
665 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Failed to add WPA IE");
666 }
667
668 os_free(wpa_ie);
669 }
670
671 if (wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]) {
672 struct wpabuf *buf = wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ];
673 size_t len;
674
675 len = sizeof(wpa_s->sme.assoc_req_ie) -
676 wpa_s->sme.assoc_req_ie_len;
677 if (wpabuf_len(buf) <= len) {
678 os_memcpy(wpa_s->sme.assoc_req_ie +
679 wpa_s->sme.assoc_req_ie_len,
680 wpabuf_head(buf), wpabuf_len(buf));
681 wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf);
682 }
683 }
684
685 #ifdef CONFIG_MBO
686 mbo_ie = wpa_bss_get_vendor_ie(bss, MBO_IE_VENDOR_TYPE);
687 if (!wpa_s->disable_mbo_oce && mbo_ie) {
688 int len;
689
690 len = wpas_mbo_ie(wpa_s, wpa_s->sme.assoc_req_ie +
691 wpa_s->sme.assoc_req_ie_len,
692 sizeof(wpa_s->sme.assoc_req_ie) -
693 wpa_s->sme.assoc_req_ie_len,
694 !!mbo_attr_from_mbo_ie(mbo_ie,
695 OCE_ATTR_ID_CAPA_IND));
696 if (len >= 0)
697 wpa_s->sme.assoc_req_ie_len += len;
698 }
699 #endif /* CONFIG_MBO */
700
701 #ifdef CONFIG_SAE
702 if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE &&
703 pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, ssid, 0,
704 NULL,
705 wpa_s->key_mgmt == WPA_KEY_MGMT_FT_SAE ?
706 WPA_KEY_MGMT_FT_SAE :
707 WPA_KEY_MGMT_SAE) == 0) {
708 wpa_dbg(wpa_s, MSG_DEBUG,
709 "PMKSA cache entry found - try to use PMKSA caching instead of new SAE authentication");
710 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa);
711 params.auth_alg = WPA_AUTH_ALG_OPEN;
712 wpa_s->sme.sae_pmksa_caching = 1;
713 }
714
715 if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE) {
716 if (start)
717 resp = sme_auth_build_sae_commit(wpa_s, ssid,
718 bss->bssid, 0,
719 start == 2, NULL);
720 else
721 resp = sme_auth_build_sae_confirm(wpa_s, 0);
722 if (resp == NULL) {
723 wpas_connection_failed(wpa_s, bss->bssid);
724 return;
725 }
726 params.auth_data = wpabuf_head(resp);
727 params.auth_data_len = wpabuf_len(resp);
728 wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED;
729 }
730 #endif /* CONFIG_SAE */
731
732 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
733 os_memset(wpa_s->bssid, 0, ETH_ALEN);
734 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
735 if (bssid_changed)
736 wpas_notify_bssid_changed(wpa_s);
737
738 old_ssid = wpa_s->current_ssid;
739 wpa_s->current_ssid = ssid;
740 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
741 wpa_supplicant_initiate_eapol(wpa_s);
742
743 #ifdef CONFIG_FILS
744 /* TODO: FILS operations can in some cases be done between different
745 * network_ctx (i.e., same credentials can be used with multiple
746 * networks). */
747 if (params.auth_alg == WPA_AUTH_ALG_OPEN &&
748 wpa_key_mgmt_fils(ssid->key_mgmt)) {
749 const u8 *indic;
750 u16 fils_info;
751 const u8 *realm, *username, *rrk;
752 size_t realm_len, username_len, rrk_len;
753 u16 next_seq_num;
754
755 /*
756 * Check FILS Indication element (FILS Information field) bits
757 * indicating supported authentication algorithms against local
758 * configuration (ssid->fils_dh_group). Try to use FILS
759 * authentication only if the AP supports the combination in the
760 * network profile. */
761 indic = wpa_bss_get_ie(bss, WLAN_EID_FILS_INDICATION);
762 if (!indic || indic[1] < 2) {
763 wpa_printf(MSG_DEBUG, "SME: " MACSTR
764 " does not include FILS Indication element - cannot use FILS authentication with it",
765 MAC2STR(bss->bssid));
766 goto no_fils;
767 }
768
769 fils_info = WPA_GET_LE16(indic + 2);
770 if (ssid->fils_dh_group == 0 && !(fils_info & BIT(9))) {
771 wpa_printf(MSG_DEBUG, "SME: " MACSTR
772 " does not support FILS SK without PFS - cannot use FILS authentication with it",
773 MAC2STR(bss->bssid));
774 goto no_fils;
775 }
776 if (ssid->fils_dh_group != 0 && !(fils_info & BIT(10))) {
777 wpa_printf(MSG_DEBUG, "SME: " MACSTR
778 " does not support FILS SK with PFS - cannot use FILS authentication with it",
779 MAC2STR(bss->bssid));
780 goto no_fils;
781 }
782
783 if (wpa_s->last_con_fail_realm &&
784 eapol_sm_get_erp_info(wpa_s->eapol, &ssid->eap,
785 &username, &username_len,
786 &realm, &realm_len, &next_seq_num,
787 &rrk, &rrk_len) == 0 &&
788 realm && realm_len == wpa_s->last_con_fail_realm_len &&
789 os_memcmp(realm, wpa_s->last_con_fail_realm,
790 realm_len) == 0) {
791 wpa_printf(MSG_DEBUG,
792 "SME: FILS authentication for this realm failed last time - try to regenerate ERP key hierarchy");
793 goto no_fils;
794 }
795
796 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
797 ssid, 0,
798 wpa_bss_get_fils_cache_id(bss),
799 0) == 0)
800 wpa_printf(MSG_DEBUG,
801 "SME: Try to use FILS with PMKSA caching");
802 resp = fils_build_auth(wpa_s->wpa, ssid->fils_dh_group, md);
803 if (resp) {
804 int auth_alg;
805
806 if (ssid->fils_dh_group)
807 wpa_printf(MSG_DEBUG,
808 "SME: Try to use FILS SK authentication with PFS (DH Group %u)",
809 ssid->fils_dh_group);
810 else
811 wpa_printf(MSG_DEBUG,
812 "SME: Try to use FILS SK authentication without PFS");
813 auth_alg = ssid->fils_dh_group ?
814 WPA_AUTH_ALG_FILS_SK_PFS : WPA_AUTH_ALG_FILS;
815 params.auth_alg = auth_alg;
816 params.auth_data = wpabuf_head(resp);
817 params.auth_data_len = wpabuf_len(resp);
818 wpa_s->sme.auth_alg = auth_alg;
819 }
820 }
821 no_fils:
822 #endif /* CONFIG_FILS */
823
824 wpa_supplicant_cancel_sched_scan(wpa_s);
825 wpa_supplicant_cancel_scan(wpa_s);
826
827 wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
828 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
829 wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
830
831 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
832 wpa_clear_keys(wpa_s, bss->bssid);
833 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
834 if (old_ssid != wpa_s->current_ssid)
835 wpas_notify_network_changed(wpa_s);
836
837 #ifdef CONFIG_HS20
838 hs20_configure_frame_filters(wpa_s);
839 #endif /* CONFIG_HS20 */
840
841 #ifdef CONFIG_P2P
842 /*
843 * If multi-channel concurrency is not supported, check for any
844 * frequency conflict. In case of any frequency conflict, remove the
845 * least prioritized connection.
846 */
847 if (wpa_s->num_multichan_concurrent < 2) {
848 int freq, num;
849 num = get_shared_radio_freqs(wpa_s, &freq, 1);
850 if (num > 0 && freq > 0 && freq != params.freq) {
851 wpa_printf(MSG_DEBUG,
852 "Conflicting frequency found (%d != %d)",
853 freq, params.freq);
854 if (wpas_p2p_handle_frequency_conflicts(wpa_s,
855 params.freq,
856 ssid) < 0) {
857 wpas_connection_failed(wpa_s, bss->bssid);
858 wpa_supplicant_mark_disassoc(wpa_s);
859 wpabuf_free(resp);
860 wpas_connect_work_done(wpa_s);
861 return;
862 }
863 }
864 }
865 #endif /* CONFIG_P2P */
866
867 if (skip_auth) {
868 wpa_msg(wpa_s, MSG_DEBUG,
869 "SME: Skip authentication step on reassoc-to-same-BSS");
870 wpabuf_free(resp);
871 sme_associate(wpa_s, ssid->mode, bss->bssid, WLAN_AUTH_OPEN);
872 return;
873 }
874
875
876 wpa_s->sme.auth_alg = params.auth_alg;
877 if (wpa_drv_authenticate(wpa_s, &params) < 0) {
878 wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
879 "driver failed");
880 wpas_connection_failed(wpa_s, bss->bssid);
881 wpa_supplicant_mark_disassoc(wpa_s);
882 wpabuf_free(resp);
883 wpas_connect_work_done(wpa_s);
884 return;
885 }
886
887 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
888 NULL);
889
890 /*
891 * Association will be started based on the authentication event from
892 * the driver.
893 */
894
895 wpabuf_free(resp);
896 }
897
898
899 static void sme_auth_start_cb(struct wpa_radio_work *work, int deinit)
900 {
901 struct wpa_connect_work *cwork = work->ctx;
902 struct wpa_supplicant *wpa_s = work->wpa_s;
903
904 if (deinit) {
905 if (work->started)
906 wpa_s->connect_work = NULL;
907
908 wpas_connect_work_free(cwork);
909 return;
910 }
911
912 wpa_s->connect_work = work;
913
914 if (cwork->bss_removed ||
915 !wpas_valid_bss_ssid(wpa_s, cwork->bss, cwork->ssid) ||
916 wpas_network_disabled(wpa_s, cwork->ssid)) {
917 wpa_dbg(wpa_s, MSG_DEBUG, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt");
918 wpas_connect_work_done(wpa_s);
919 return;
920 }
921
922 /* Starting new connection, so clear the possibly used WPA IE from the
923 * previous association. */
924 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
925 wpa_sm_set_assoc_rsnxe(wpa_s->wpa, NULL, 0);
926 wpa_s->rsnxe_len = 0;
927
928 sme_send_authentication(wpa_s, cwork->bss, cwork->ssid, 1);
929 }
930
931
932 void sme_authenticate(struct wpa_supplicant *wpa_s,
933 struct wpa_bss *bss, struct wpa_ssid *ssid)
934 {
935 struct wpa_connect_work *cwork;
936
937 if (bss == NULL || ssid == NULL)
938 return;
939 if (wpa_s->connect_work) {
940 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reject sme_authenticate() call since connect_work exist");
941 return;
942 }
943
944 if (radio_work_pending(wpa_s, "sme-connect")) {
945 /*
946 * The previous sme-connect work might no longer be valid due to
947 * the fact that the BSS list was updated. In addition, it makes
948 * sense to adhere to the 'newer' decision.
949 */
950 wpa_dbg(wpa_s, MSG_DEBUG,
951 "SME: Remove previous pending sme-connect");
952 radio_remove_works(wpa_s, "sme-connect", 0);
953 }
954
955 wpas_abort_ongoing_scan(wpa_s);
956
957 cwork = os_zalloc(sizeof(*cwork));
958 if (cwork == NULL)
959 return;
960 cwork->bss = bss;
961 cwork->ssid = ssid;
962 cwork->sme = 1;
963
964 #ifdef CONFIG_SAE
965 wpa_s->sme.sae.state = SAE_NOTHING;
966 wpa_s->sme.sae.send_confirm = 0;
967 wpa_s->sme.sae_group_index = 0;
968 #endif /* CONFIG_SAE */
969
970 if (radio_add_work(wpa_s, bss->freq, "sme-connect", 1,
971 sme_auth_start_cb, cwork) < 0)
972 wpas_connect_work_free(cwork);
973 }
974
975
976 #ifdef CONFIG_SAE
977
978 static int sme_external_auth_build_buf(struct wpabuf *buf,
979 struct wpabuf *params,
980 const u8 *sa, const u8 *da,
981 u16 auth_transaction, u16 seq_num,
982 u16 status_code)
983 {
984 struct ieee80211_mgmt *resp;
985
986 resp = wpabuf_put(buf, offsetof(struct ieee80211_mgmt,
987 u.auth.variable));
988
989 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
990 (WLAN_FC_STYPE_AUTH << 4));
991 os_memcpy(resp->da, da, ETH_ALEN);
992 os_memcpy(resp->sa, sa, ETH_ALEN);
993 os_memcpy(resp->bssid, da, ETH_ALEN);
994 resp->u.auth.auth_alg = host_to_le16(WLAN_AUTH_SAE);
995 resp->seq_ctrl = host_to_le16(seq_num << 4);
996 resp->u.auth.auth_transaction = host_to_le16(auth_transaction);
997 resp->u.auth.status_code = host_to_le16(status_code);
998 if (params)
999 wpabuf_put_buf(buf, params);
1000
1001 return 0;
1002 }
1003
1004
1005 static int sme_external_auth_send_sae_commit(struct wpa_supplicant *wpa_s,
1006 const u8 *bssid,
1007 struct wpa_ssid *ssid)
1008 {
1009 struct wpabuf *resp, *buf;
1010 int use_pt;
1011
1012 resp = sme_auth_build_sae_commit(wpa_s, ssid, bssid, 1, 0, &use_pt);
1013 if (!resp) {
1014 wpa_printf(MSG_DEBUG, "SAE: Failed to build SAE commit");
1015 return -1;
1016 }
1017
1018 wpa_s->sme.sae.state = SAE_COMMITTED;
1019 buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + wpabuf_len(resp));
1020 if (!buf) {
1021 wpabuf_free(resp);
1022 return -1;
1023 }
1024
1025 wpa_s->sme.seq_num++;
1026 sme_external_auth_build_buf(buf, resp, wpa_s->own_addr,
1027 bssid, 1, wpa_s->sme.seq_num,
1028 use_pt ? WLAN_STATUS_SAE_HASH_TO_ELEMENT :
1029 WLAN_STATUS_SUCCESS);
1030 wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 0, 0);
1031 wpabuf_free(resp);
1032 wpabuf_free(buf);
1033
1034 return 0;
1035 }
1036
1037
1038 static void sme_send_external_auth_status(struct wpa_supplicant *wpa_s,
1039 u16 status)
1040 {
1041 struct external_auth params;
1042
1043 os_memset(&params, 0, sizeof(params));
1044 params.status = status;
1045 params.ssid = wpa_s->sme.ext_auth_ssid;
1046 params.ssid_len = wpa_s->sme.ext_auth_ssid_len;
1047 params.bssid = wpa_s->sme.ext_auth_bssid;
1048 if (wpa_s->conf->sae_pmkid_in_assoc && status == WLAN_STATUS_SUCCESS)
1049 params.pmkid = wpa_s->sme.sae.pmkid;
1050 wpa_drv_send_external_auth_status(wpa_s, &params);
1051 }
1052
1053
1054 static int sme_handle_external_auth_start(struct wpa_supplicant *wpa_s,
1055 union wpa_event_data *data)
1056 {
1057 struct wpa_ssid *ssid;
1058 size_t ssid_str_len = data->external_auth.ssid_len;
1059 const u8 *ssid_str = data->external_auth.ssid;
1060
1061 /* Get the SSID conf from the ssid string obtained */
1062 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1063 if (!wpas_network_disabled(wpa_s, ssid) &&
1064 ssid_str_len == ssid->ssid_len &&
1065 os_memcmp(ssid_str, ssid->ssid, ssid_str_len) == 0 &&
1066 (ssid->key_mgmt & (WPA_KEY_MGMT_SAE | WPA_KEY_MGMT_FT_SAE)))
1067 break;
1068 }
1069 if (!ssid ||
1070 sme_external_auth_send_sae_commit(wpa_s, data->external_auth.bssid,
1071 ssid) < 0)
1072 return -1;
1073
1074 return 0;
1075 }
1076
1077
1078 static void sme_external_auth_send_sae_confirm(struct wpa_supplicant *wpa_s,
1079 const u8 *da)
1080 {
1081 struct wpabuf *resp, *buf;
1082
1083 resp = sme_auth_build_sae_confirm(wpa_s, 1);
1084 if (!resp) {
1085 wpa_printf(MSG_DEBUG, "SAE: Confirm message buf alloc failure");
1086 return;
1087 }
1088
1089 wpa_s->sme.sae.state = SAE_CONFIRMED;
1090 buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN + wpabuf_len(resp));
1091 if (!buf) {
1092 wpa_printf(MSG_DEBUG, "SAE: Auth Confirm buf alloc failure");
1093 wpabuf_free(resp);
1094 return;
1095 }
1096 wpa_s->sme.seq_num++;
1097 sme_external_auth_build_buf(buf, resp, wpa_s->own_addr,
1098 da, 2, wpa_s->sme.seq_num,
1099 WLAN_STATUS_SUCCESS);
1100 wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 0, 0);
1101 wpabuf_free(resp);
1102 wpabuf_free(buf);
1103 }
1104
1105
1106 void sme_external_auth_trigger(struct wpa_supplicant *wpa_s,
1107 union wpa_event_data *data)
1108 {
1109 if (RSN_SELECTOR_GET(&data->external_auth.key_mgmt_suite) !=
1110 RSN_AUTH_KEY_MGMT_SAE)
1111 return;
1112
1113 if (data->external_auth.action == EXT_AUTH_START) {
1114 if (!data->external_auth.bssid || !data->external_auth.ssid)
1115 return;
1116 os_memcpy(wpa_s->sme.ext_auth_bssid, data->external_auth.bssid,
1117 ETH_ALEN);
1118 os_memcpy(wpa_s->sme.ext_auth_ssid, data->external_auth.ssid,
1119 data->external_auth.ssid_len);
1120 wpa_s->sme.ext_auth_ssid_len = data->external_auth.ssid_len;
1121 wpa_s->sme.seq_num = 0;
1122 wpa_s->sme.sae.state = SAE_NOTHING;
1123 wpa_s->sme.sae.send_confirm = 0;
1124 wpa_s->sme.sae_group_index = 0;
1125 if (sme_handle_external_auth_start(wpa_s, data) < 0)
1126 sme_send_external_auth_status(wpa_s,
1127 WLAN_STATUS_UNSPECIFIED_FAILURE);
1128 } else if (data->external_auth.action == EXT_AUTH_ABORT) {
1129 /* Report failure to driver for the wrong trigger */
1130 sme_send_external_auth_status(wpa_s,
1131 WLAN_STATUS_UNSPECIFIED_FAILURE);
1132 }
1133 }
1134
1135
1136 static int sme_sae_is_group_enabled(struct wpa_supplicant *wpa_s, int group)
1137 {
1138 int *groups = wpa_s->conf->sae_groups;
1139 int default_groups[] = { 19, 20, 21, 0 };
1140 int i;
1141
1142 if (!groups)
1143 groups = default_groups;
1144
1145 for (i = 0; groups[i] > 0; i++) {
1146 if (groups[i] == group)
1147 return 1;
1148 }
1149
1150 return 0;
1151 }
1152
1153
1154 static int sme_check_sae_rejected_groups(struct wpa_supplicant *wpa_s,
1155 const struct wpabuf *groups)
1156 {
1157 size_t i, count;
1158 const u8 *pos;
1159
1160 if (!groups)
1161 return 0;
1162
1163 pos = wpabuf_head(groups);
1164 count = wpabuf_len(groups) / 2;
1165 for (i = 0; i < count; i++) {
1166 int enabled;
1167 u16 group;
1168
1169 group = WPA_GET_LE16(pos);
1170 pos += 2;
1171 enabled = sme_sae_is_group_enabled(wpa_s, group);
1172 wpa_printf(MSG_DEBUG, "SAE: Rejected group %u is %s",
1173 group, enabled ? "enabled" : "disabled");
1174 if (enabled)
1175 return 1;
1176 }
1177
1178 return 0;
1179 }
1180
1181
1182 static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
1183 u16 status_code, const u8 *data, size_t len,
1184 int external, const u8 *sa)
1185 {
1186 int *groups;
1187
1188 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
1189 "status code %u", auth_transaction, status_code);
1190
1191 if (auth_transaction == 1 &&
1192 status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
1193 wpa_s->sme.sae.state == SAE_COMMITTED &&
1194 (external || wpa_s->current_bss) && wpa_s->current_ssid) {
1195 int default_groups[] = { 19, 20, 21, 0 };
1196 u16 group;
1197 const u8 *token_pos;
1198 size_t token_len;
1199 int h2e = 0;
1200
1201 groups = wpa_s->conf->sae_groups;
1202 if (!groups || groups[0] <= 0)
1203 groups = default_groups;
1204
1205 wpa_hexdump(MSG_DEBUG, "SME: SAE anti-clogging token request",
1206 data, len);
1207 if (len < sizeof(le16)) {
1208 wpa_dbg(wpa_s, MSG_DEBUG,
1209 "SME: Too short SAE anti-clogging token request");
1210 return -1;
1211 }
1212 group = WPA_GET_LE16(data);
1213 wpa_dbg(wpa_s, MSG_DEBUG,
1214 "SME: SAE anti-clogging token requested (group %u)",
1215 group);
1216 if (sae_group_allowed(&wpa_s->sme.sae, groups, group) !=
1217 WLAN_STATUS_SUCCESS) {
1218 wpa_dbg(wpa_s, MSG_ERROR,
1219 "SME: SAE group %u of anti-clogging request is invalid",
1220 group);
1221 return -1;
1222 }
1223 wpabuf_free(wpa_s->sme.sae_token);
1224 token_pos = data + sizeof(le16);
1225 token_len = len - sizeof(le16);
1226 if (wpa_s->sme.sae.tmp)
1227 h2e = wpa_s->sme.sae.tmp->h2e;
1228 if (h2e) {
1229 if (token_len < 3) {
1230 wpa_dbg(wpa_s, MSG_DEBUG,
1231 "SME: Too short SAE anti-clogging token container");
1232 return -1;
1233 }
1234 if (token_pos[0] != WLAN_EID_EXTENSION ||
1235 token_pos[1] == 0 ||
1236 token_pos[1] > token_len - 2 ||
1237 token_pos[2] != WLAN_EID_EXT_ANTI_CLOGGING_TOKEN) {
1238 wpa_dbg(wpa_s, MSG_DEBUG,
1239 "SME: Invalid SAE anti-clogging token container header");
1240 return -1;
1241 }
1242 token_len = token_pos[1] - 1;
1243 token_pos += 3;
1244 }
1245 wpa_s->sme.sae_token = wpabuf_alloc_copy(token_pos, token_len);
1246 wpa_hexdump_buf(MSG_DEBUG, "SME: Requested anti-clogging token",
1247 wpa_s->sme.sae_token);
1248 if (!external)
1249 sme_send_authentication(wpa_s, wpa_s->current_bss,
1250 wpa_s->current_ssid, 2);
1251 else
1252 sme_external_auth_send_sae_commit(
1253 wpa_s, wpa_s->sme.ext_auth_bssid,
1254 wpa_s->current_ssid);
1255 return 0;
1256 }
1257
1258 if (auth_transaction == 1 &&
1259 status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
1260 wpa_s->sme.sae.state == SAE_COMMITTED &&
1261 (external || wpa_s->current_bss) && wpa_s->current_ssid) {
1262 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
1263 int_array_add_unique(&wpa_s->sme.sae_rejected_groups,
1264 wpa_s->sme.sae.group);
1265 wpa_s->sme.sae_group_index++;
1266 if (sme_set_sae_group(wpa_s) < 0)
1267 return -1; /* no other groups enabled */
1268 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
1269 if (!external)
1270 sme_send_authentication(wpa_s, wpa_s->current_bss,
1271 wpa_s->current_ssid, 1);
1272 else
1273 sme_external_auth_send_sae_commit(
1274 wpa_s, wpa_s->sme.ext_auth_bssid,
1275 wpa_s->current_ssid);
1276 return 0;
1277 }
1278
1279 if (auth_transaction == 1 &&
1280 status_code == WLAN_STATUS_UNKNOWN_PASSWORD_IDENTIFIER) {
1281 const u8 *bssid = sa ? sa : wpa_s->pending_bssid;
1282
1283 wpa_msg(wpa_s, MSG_INFO,
1284 WPA_EVENT_SAE_UNKNOWN_PASSWORD_IDENTIFIER MACSTR,
1285 MAC2STR(bssid));
1286 return -1;
1287 }
1288
1289 if (status_code != WLAN_STATUS_SUCCESS &&
1290 status_code != WLAN_STATUS_SAE_HASH_TO_ELEMENT)
1291 return -1;
1292
1293 if (auth_transaction == 1) {
1294 u16 res;
1295
1296 groups = wpa_s->conf->sae_groups;
1297
1298 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
1299 if ((!external && wpa_s->current_bss == NULL) ||
1300 wpa_s->current_ssid == NULL)
1301 return -1;
1302 if (wpa_s->sme.sae.state != SAE_COMMITTED) {
1303 wpa_printf(MSG_DEBUG,
1304 "SAE: Ignore commit message while waiting for confirm");
1305 return 0;
1306 }
1307 if (wpa_s->sme.sae.tmp && wpa_s->sme.sae.tmp->h2e &&
1308 status_code == WLAN_STATUS_SUCCESS) {
1309 wpa_printf(MSG_DEBUG,
1310 "SAE: Unexpected use of status code 0 in SAE commit when H2E was expected");
1311 return -1;
1312 }
1313 if (wpa_s->sme.sae.tmp && !wpa_s->sme.sae.tmp->h2e &&
1314 status_code == WLAN_STATUS_SAE_HASH_TO_ELEMENT) {
1315 wpa_printf(MSG_DEBUG,
1316 "SAE: Unexpected use of status code for H2E in SAE commit when H2E was not expected");
1317 return -1;
1318 }
1319
1320 if (groups && groups[0] <= 0)
1321 groups = NULL;
1322 res = sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
1323 groups, status_code ==
1324 WLAN_STATUS_SAE_HASH_TO_ELEMENT);
1325 if (res == SAE_SILENTLY_DISCARD) {
1326 wpa_printf(MSG_DEBUG,
1327 "SAE: Drop commit message due to reflection attack");
1328 return 0;
1329 }
1330 if (res != WLAN_STATUS_SUCCESS)
1331 return -1;
1332
1333 if (wpa_s->sme.sae.tmp &&
1334 sme_check_sae_rejected_groups(
1335 wpa_s,
1336 wpa_s->sme.sae.tmp->peer_rejected_groups))
1337 return -1;
1338
1339 if (sae_process_commit(&wpa_s->sme.sae) < 0) {
1340 wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
1341 "commit");
1342 return -1;
1343 }
1344
1345 wpabuf_free(wpa_s->sme.sae_token);
1346 wpa_s->sme.sae_token = NULL;
1347 if (!external)
1348 sme_send_authentication(wpa_s, wpa_s->current_bss,
1349 wpa_s->current_ssid, 0);
1350 else
1351 sme_external_auth_send_sae_confirm(wpa_s, sa);
1352 return 0;
1353 } else if (auth_transaction == 2) {
1354 if (status_code != WLAN_STATUS_SUCCESS)
1355 return -1;
1356 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
1357 if (wpa_s->sme.sae.state != SAE_CONFIRMED)
1358 return -1;
1359 if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
1360 return -1;
1361 wpa_s->sme.sae.state = SAE_ACCEPTED;
1362 sae_clear_temp_data(&wpa_s->sme.sae);
1363
1364 if (external) {
1365 /* Report success to driver */
1366 sme_send_external_auth_status(wpa_s,
1367 WLAN_STATUS_SUCCESS);
1368 }
1369
1370 return 1;
1371 }
1372
1373 return -1;
1374 }
1375
1376
1377 static int sme_sae_set_pmk(struct wpa_supplicant *wpa_s, const u8 *bssid)
1378 {
1379 wpa_printf(MSG_DEBUG,
1380 "SME: SAE completed - setting PMK for 4-way handshake");
1381 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN,
1382 wpa_s->sme.sae.pmkid, bssid);
1383 if (wpa_s->conf->sae_pmkid_in_assoc) {
1384 /* Update the own RSNE contents now that we have set the PMK
1385 * and added a PMKSA cache entry based on the successfully
1386 * completed SAE exchange. In practice, this will add the PMKID
1387 * into RSNE. */
1388 if (wpa_s->sme.assoc_req_ie_len + 2 + PMKID_LEN >
1389 sizeof(wpa_s->sme.assoc_req_ie)) {
1390 wpa_msg(wpa_s, MSG_WARNING,
1391 "RSN: Not enough room for inserting own PMKID into RSNE");
1392 return -1;
1393 }
1394 if (wpa_insert_pmkid(wpa_s->sme.assoc_req_ie,
1395 &wpa_s->sme.assoc_req_ie_len,
1396 wpa_s->sme.sae.pmkid) < 0)
1397 return -1;
1398 wpa_hexdump(MSG_DEBUG,
1399 "SME: Updated Association Request IEs",
1400 wpa_s->sme.assoc_req_ie,
1401 wpa_s->sme.assoc_req_ie_len);
1402 }
1403
1404 return 0;
1405 }
1406
1407
1408 void sme_external_auth_mgmt_rx(struct wpa_supplicant *wpa_s,
1409 const u8 *auth_frame, size_t len)
1410 {
1411 const struct ieee80211_mgmt *header;
1412 size_t auth_length;
1413
1414 header = (const struct ieee80211_mgmt *) auth_frame;
1415 auth_length = IEEE80211_HDRLEN + sizeof(header->u.auth);
1416
1417 if (len < auth_length) {
1418 /* Notify failure to the driver */
1419 sme_send_external_auth_status(wpa_s,
1420 WLAN_STATUS_UNSPECIFIED_FAILURE);
1421 return;
1422 }
1423
1424 if (le_to_host16(header->u.auth.auth_alg) == WLAN_AUTH_SAE) {
1425 int res;
1426
1427 res = sme_sae_auth(
1428 wpa_s, le_to_host16(header->u.auth.auth_transaction),
1429 le_to_host16(header->u.auth.status_code),
1430 header->u.auth.variable,
1431 len - auth_length, 1, header->sa);
1432 if (res < 0) {
1433 /* Notify failure to the driver */
1434 sme_send_external_auth_status(
1435 wpa_s, WLAN_STATUS_UNSPECIFIED_FAILURE);
1436 return;
1437 }
1438 if (res != 1)
1439 return;
1440
1441 if (sme_sae_set_pmk(wpa_s, wpa_s->sme.ext_auth_bssid) < 0)
1442 return;
1443 }
1444 }
1445
1446 #endif /* CONFIG_SAE */
1447
1448
1449 void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
1450 {
1451 struct wpa_ssid *ssid = wpa_s->current_ssid;
1452
1453 if (ssid == NULL) {
1454 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
1455 "when network is not selected");
1456 return;
1457 }
1458
1459 if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
1460 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
1461 "when not in authenticating state");
1462 return;
1463 }
1464
1465 if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
1466 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
1467 "unexpected peer " MACSTR,
1468 MAC2STR(data->auth.peer));
1469 return;
1470 }
1471
1472 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
1473 " auth_type=%d auth_transaction=%d status_code=%d",
1474 MAC2STR(data->auth.peer), data->auth.auth_type,
1475 data->auth.auth_transaction, data->auth.status_code);
1476 wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
1477 data->auth.ies, data->auth.ies_len);
1478
1479 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1480
1481 #ifdef CONFIG_SAE
1482 if (data->auth.auth_type == WLAN_AUTH_SAE) {
1483 int res;
1484 res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
1485 data->auth.status_code, data->auth.ies,
1486 data->auth.ies_len, 0, NULL);
1487 if (res < 0) {
1488 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1489 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1490
1491 }
1492 if (res != 1)
1493 return;
1494
1495 if (sme_sae_set_pmk(wpa_s, wpa_s->pending_bssid) < 0)
1496 return;
1497 }
1498 #endif /* CONFIG_SAE */
1499
1500 if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
1501 char *ie_txt = NULL;
1502
1503 if (data->auth.ies && data->auth.ies_len) {
1504 size_t buflen = 2 * data->auth.ies_len + 1;
1505 ie_txt = os_malloc(buflen);
1506 if (ie_txt) {
1507 wpa_snprintf_hex(ie_txt, buflen, data->auth.ies,
1508 data->auth.ies_len);
1509 }
1510 }
1511 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AUTH_REJECT MACSTR
1512 " auth_type=%u auth_transaction=%u status_code=%u%s%s",
1513 MAC2STR(data->auth.peer), data->auth.auth_type,
1514 data->auth.auth_transaction, data->auth.status_code,
1515 ie_txt ? " ie=" : "",
1516 ie_txt ? ie_txt : "");
1517 os_free(ie_txt);
1518
1519 #ifdef CONFIG_FILS
1520 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FILS ||
1521 wpa_s->sme.auth_alg == WPA_AUTH_ALG_FILS_SK_PFS)
1522 fils_connection_failure(wpa_s);
1523 #endif /* CONFIG_FILS */
1524
1525 if (data->auth.status_code !=
1526 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
1527 wpa_s->sme.auth_alg == data->auth.auth_type ||
1528 wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
1529 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1530 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1531 return;
1532 }
1533
1534 wpas_connect_work_done(wpa_s);
1535
1536 switch (data->auth.auth_type) {
1537 case WLAN_AUTH_OPEN:
1538 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
1539
1540 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
1541 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
1542 wpa_s->current_ssid);
1543 return;
1544
1545 case WLAN_AUTH_SHARED_KEY:
1546 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
1547
1548 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
1549 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
1550 wpa_s->current_ssid);
1551 return;
1552
1553 default:
1554 return;
1555 }
1556 }
1557
1558 #ifdef CONFIG_IEEE80211R
1559 if (data->auth.auth_type == WLAN_AUTH_FT) {
1560 const u8 *ric_ies = NULL;
1561 size_t ric_ies_len = 0;
1562
1563 if (wpa_s->ric_ies) {
1564 ric_ies = wpabuf_head(wpa_s->ric_ies);
1565 ric_ies_len = wpabuf_len(wpa_s->ric_ies);
1566 }
1567 if (wpa_ft_process_response(wpa_s->wpa, data->auth.ies,
1568 data->auth.ies_len, 0,
1569 data->auth.peer,
1570 ric_ies, ric_ies_len) < 0) {
1571 wpa_dbg(wpa_s, MSG_DEBUG,
1572 "SME: FT Authentication response processing failed");
1573 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
1574 MACSTR
1575 " reason=%d locally_generated=1",
1576 MAC2STR(wpa_s->pending_bssid),
1577 WLAN_REASON_DEAUTH_LEAVING);
1578 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1579 wpa_supplicant_mark_disassoc(wpa_s);
1580 return;
1581 }
1582 }
1583 #endif /* CONFIG_IEEE80211R */
1584
1585 #ifdef CONFIG_FILS
1586 if (data->auth.auth_type == WLAN_AUTH_FILS_SK ||
1587 data->auth.auth_type == WLAN_AUTH_FILS_SK_PFS) {
1588 u16 expect_auth_type;
1589
1590 expect_auth_type = wpa_s->sme.auth_alg ==
1591 WPA_AUTH_ALG_FILS_SK_PFS ? WLAN_AUTH_FILS_SK_PFS :
1592 WLAN_AUTH_FILS_SK;
1593 if (data->auth.auth_type != expect_auth_type) {
1594 wpa_dbg(wpa_s, MSG_DEBUG,
1595 "SME: FILS Authentication response used different auth alg (%u; expected %u)",
1596 data->auth.auth_type, expect_auth_type);
1597 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
1598 MACSTR
1599 " reason=%d locally_generated=1",
1600 MAC2STR(wpa_s->pending_bssid),
1601 WLAN_REASON_DEAUTH_LEAVING);
1602 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1603 wpa_supplicant_mark_disassoc(wpa_s);
1604 return;
1605 }
1606
1607 if (fils_process_auth(wpa_s->wpa, wpa_s->pending_bssid,
1608 data->auth.ies, data->auth.ies_len) < 0) {
1609 wpa_dbg(wpa_s, MSG_DEBUG,
1610 "SME: FILS Authentication response processing failed");
1611 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
1612 MACSTR
1613 " reason=%d locally_generated=1",
1614 MAC2STR(wpa_s->pending_bssid),
1615 WLAN_REASON_DEAUTH_LEAVING);
1616 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1617 wpa_supplicant_mark_disassoc(wpa_s);
1618 return;
1619 }
1620 }
1621 #endif /* CONFIG_FILS */
1622
1623 sme_associate(wpa_s, ssid->mode, data->auth.peer,
1624 data->auth.auth_type);
1625 }
1626
1627
1628 #ifdef CONFIG_IEEE80211R
1629 static void remove_ie(u8 *buf, size_t *len, u8 eid)
1630 {
1631 u8 *pos, *next, *end;
1632
1633 pos = (u8 *) get_ie(buf, *len, eid);
1634 if (pos) {
1635 next = pos + 2 + pos[1];
1636 end = buf + *len;
1637 *len -= 2 + pos[1];
1638 os_memmove(pos, next, end - next);
1639 }
1640 }
1641 #endif /* CONFIG_IEEE80211R */
1642
1643
1644 void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
1645 const u8 *bssid, u16 auth_type)
1646 {
1647 struct wpa_driver_associate_params params;
1648 struct ieee802_11_elems elems;
1649 #ifdef CONFIG_FILS
1650 u8 nonces[2 * FILS_NONCE_LEN];
1651 #endif /* CONFIG_FILS */
1652 #ifdef CONFIG_HT_OVERRIDES
1653 struct ieee80211_ht_capabilities htcaps;
1654 struct ieee80211_ht_capabilities htcaps_mask;
1655 #endif /* CONFIG_HT_OVERRIDES */
1656 #ifdef CONFIG_VHT_OVERRIDES
1657 struct ieee80211_vht_capabilities vhtcaps;
1658 struct ieee80211_vht_capabilities vhtcaps_mask;
1659 #endif /* CONFIG_VHT_OVERRIDES */
1660
1661 os_memset(&params, 0, sizeof(params));
1662
1663 #ifdef CONFIG_FILS
1664 if (auth_type == WLAN_AUTH_FILS_SK ||
1665 auth_type == WLAN_AUTH_FILS_SK_PFS) {
1666 struct wpabuf *buf;
1667 const u8 *snonce, *anonce;
1668 const unsigned int max_hlp = 20;
1669 struct wpabuf *hlp[max_hlp];
1670 unsigned int i, num_hlp = 0;
1671 struct fils_hlp_req *req;
1672
1673 dl_list_for_each(req, &wpa_s->fils_hlp_req, struct fils_hlp_req,
1674 list) {
1675 hlp[num_hlp] = wpabuf_alloc(2 * ETH_ALEN + 6 +
1676 wpabuf_len(req->pkt));
1677 if (!hlp[num_hlp])
1678 break;
1679 wpabuf_put_data(hlp[num_hlp], req->dst, ETH_ALEN);
1680 wpabuf_put_data(hlp[num_hlp], wpa_s->own_addr,
1681 ETH_ALEN);
1682 wpabuf_put_data(hlp[num_hlp],
1683 "\xaa\xaa\x03\x00\x00\x00", 6);
1684 wpabuf_put_buf(hlp[num_hlp], req->pkt);
1685 num_hlp++;
1686 if (num_hlp >= max_hlp)
1687 break;
1688 }
1689
1690 buf = fils_build_assoc_req(wpa_s->wpa, &params.fils_kek,
1691 &params.fils_kek_len, &snonce,
1692 &anonce,
1693 (const struct wpabuf **) hlp,
1694 num_hlp);
1695 for (i = 0; i < num_hlp; i++)
1696 wpabuf_free(hlp[i]);
1697 if (!buf)
1698 return;
1699 wpa_hexdump(MSG_DEBUG, "FILS: assoc_req before FILS elements",
1700 wpa_s->sme.assoc_req_ie,
1701 wpa_s->sme.assoc_req_ie_len);
1702 #ifdef CONFIG_IEEE80211R
1703 if (wpa_key_mgmt_ft(wpa_s->key_mgmt)) {
1704 /* Remove RSNE and MDE to allow them to be overridden
1705 * with FILS+FT specific values from
1706 * fils_build_assoc_req(). */
1707 remove_ie(wpa_s->sme.assoc_req_ie,
1708 &wpa_s->sme.assoc_req_ie_len,
1709 WLAN_EID_RSN);
1710 wpa_hexdump(MSG_DEBUG,
1711 "FILS: assoc_req after RSNE removal",
1712 wpa_s->sme.assoc_req_ie,
1713 wpa_s->sme.assoc_req_ie_len);
1714 remove_ie(wpa_s->sme.assoc_req_ie,
1715 &wpa_s->sme.assoc_req_ie_len,
1716 WLAN_EID_MOBILITY_DOMAIN);
1717 wpa_hexdump(MSG_DEBUG,
1718 "FILS: assoc_req after MDE removal",
1719 wpa_s->sme.assoc_req_ie,
1720 wpa_s->sme.assoc_req_ie_len);
1721 }
1722 #endif /* CONFIG_IEEE80211R */
1723 /* TODO: Make wpa_s->sme.assoc_req_ie use dynamic allocation */
1724 if (wpa_s->sme.assoc_req_ie_len + wpabuf_len(buf) >
1725 sizeof(wpa_s->sme.assoc_req_ie)) {
1726 wpa_printf(MSG_ERROR,
1727 "FILS: Not enough buffer room for own AssocReq elements");
1728 wpabuf_free(buf);
1729 return;
1730 }
1731 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1732 wpabuf_head(buf), wpabuf_len(buf));
1733 wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf);
1734 wpabuf_free(buf);
1735 wpa_hexdump(MSG_DEBUG, "FILS: assoc_req after FILS elements",
1736 wpa_s->sme.assoc_req_ie,
1737 wpa_s->sme.assoc_req_ie_len);
1738
1739 os_memcpy(nonces, snonce, FILS_NONCE_LEN);
1740 os_memcpy(nonces + FILS_NONCE_LEN, anonce, FILS_NONCE_LEN);
1741 params.fils_nonces = nonces;
1742 params.fils_nonces_len = sizeof(nonces);
1743 }
1744 #endif /* CONFIG_FILS */
1745
1746 #ifdef CONFIG_OWE
1747 #ifdef CONFIG_TESTING_OPTIONS
1748 if (get_ie_ext(wpa_s->sme.assoc_req_ie, wpa_s->sme.assoc_req_ie_len,
1749 WLAN_EID_EXT_OWE_DH_PARAM)) {
1750 wpa_printf(MSG_INFO, "TESTING: Override OWE DH element");
1751 } else
1752 #endif /* CONFIG_TESTING_OPTIONS */
1753 if (auth_type == WLAN_AUTH_OPEN &&
1754 wpa_s->key_mgmt == WPA_KEY_MGMT_OWE) {
1755 struct wpabuf *owe_ie;
1756 u16 group;
1757
1758 if (wpa_s->current_ssid && wpa_s->current_ssid->owe_group) {
1759 group = wpa_s->current_ssid->owe_group;
1760 } else if (wpa_s->assoc_status_code ==
1761 WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED) {
1762 if (wpa_s->last_owe_group == 19)
1763 group = 20;
1764 else if (wpa_s->last_owe_group == 20)
1765 group = 21;
1766 else
1767 group = OWE_DH_GROUP;
1768 } else {
1769 group = OWE_DH_GROUP;
1770 }
1771
1772 wpa_s->last_owe_group = group;
1773 wpa_printf(MSG_DEBUG, "OWE: Try to use group %u", group);
1774 owe_ie = owe_build_assoc_req(wpa_s->wpa, group);
1775 if (!owe_ie) {
1776 wpa_printf(MSG_ERROR,
1777 "OWE: Failed to build IE for Association Request frame");
1778 return;
1779 }
1780 if (wpa_s->sme.assoc_req_ie_len + wpabuf_len(owe_ie) >
1781 sizeof(wpa_s->sme.assoc_req_ie)) {
1782 wpa_printf(MSG_ERROR,
1783 "OWE: Not enough buffer room for own Association Request frame elements");
1784 wpabuf_free(owe_ie);
1785 return;
1786 }
1787 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1788 wpabuf_head(owe_ie), wpabuf_len(owe_ie));
1789 wpa_s->sme.assoc_req_ie_len += wpabuf_len(owe_ie);
1790 wpabuf_free(owe_ie);
1791 }
1792 #endif /* CONFIG_OWE */
1793
1794 #ifdef CONFIG_DPP2
1795 if (wpa_s->key_mgmt == WPA_KEY_MGMT_DPP && wpa_s->current_ssid &&
1796 wpa_s->current_ssid->dpp_netaccesskey &&
1797 wpa_s->current_ssid->dpp_pfs != 2 &&
1798 !wpa_s->current_ssid->dpp_pfs_fallback) {
1799 struct wpa_ssid *ssid = wpa_s->current_ssid;
1800
1801 dpp_pfs_free(wpa_s->dpp_pfs);
1802 wpa_s->dpp_pfs = dpp_pfs_init(ssid->dpp_netaccesskey,
1803 ssid->dpp_netaccesskey_len);
1804 if (!wpa_s->dpp_pfs) {
1805 wpa_printf(MSG_DEBUG, "DPP: Could not initialize PFS");
1806 /* Try to continue without PFS */
1807 goto pfs_fail;
1808 }
1809 if (wpa_s->sme.assoc_req_ie_len +
1810 wpabuf_len(wpa_s->dpp_pfs->ie) >
1811 sizeof(wpa_s->sme.assoc_req_ie)) {
1812 wpa_printf(MSG_ERROR,
1813 "DPP: Not enough buffer room for own Association Request frame elements");
1814 dpp_pfs_free(wpa_s->dpp_pfs);
1815 wpa_s->dpp_pfs = NULL;
1816 goto pfs_fail;
1817 }
1818 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1819 wpabuf_head(wpa_s->dpp_pfs->ie),
1820 wpabuf_len(wpa_s->dpp_pfs->ie));
1821 wpa_s->sme.assoc_req_ie_len += wpabuf_len(wpa_s->dpp_pfs->ie);
1822 }
1823 pfs_fail:
1824 #endif /* CONFIG_DPP2 */
1825
1826 if (wpa_s->current_ssid && wpa_s->current_ssid->multi_ap_backhaul_sta) {
1827 size_t multi_ap_ie_len;
1828
1829 multi_ap_ie_len = add_multi_ap_ie(
1830 wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1831 sizeof(wpa_s->sme.assoc_req_ie) -
1832 wpa_s->sme.assoc_req_ie_len,
1833 MULTI_AP_BACKHAUL_STA);
1834 if (multi_ap_ie_len == 0) {
1835 wpa_printf(MSG_ERROR,
1836 "Multi-AP: Failed to build Multi-AP IE");
1837 return;
1838 }
1839 wpa_s->sme.assoc_req_ie_len += multi_ap_ie_len;
1840 }
1841
1842 params.bssid = bssid;
1843 params.ssid = wpa_s->sme.ssid;
1844 params.ssid_len = wpa_s->sme.ssid_len;
1845 params.freq.freq = wpa_s->sme.freq;
1846 params.bg_scan_period = wpa_s->current_ssid ?
1847 wpa_s->current_ssid->bg_scan_period : -1;
1848 params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
1849 wpa_s->sme.assoc_req_ie : NULL;
1850 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
1851 wpa_hexdump(MSG_DEBUG, "SME: Association Request IEs",
1852 params.wpa_ie, params.wpa_ie_len);
1853 params.pairwise_suite = wpa_s->pairwise_cipher;
1854 params.group_suite = wpa_s->group_cipher;
1855 params.mgmt_group_suite = wpa_s->mgmt_group_cipher;
1856 params.key_mgmt_suite = wpa_s->key_mgmt;
1857 params.wpa_proto = wpa_s->wpa_proto;
1858 #ifdef CONFIG_HT_OVERRIDES
1859 os_memset(&htcaps, 0, sizeof(htcaps));
1860 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
1861 params.htcaps = (u8 *) &htcaps;
1862 params.htcaps_mask = (u8 *) &htcaps_mask;
1863 wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, &params);
1864 #endif /* CONFIG_HT_OVERRIDES */
1865 #ifdef CONFIG_VHT_OVERRIDES
1866 os_memset(&vhtcaps, 0, sizeof(vhtcaps));
1867 os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
1868 params.vhtcaps = &vhtcaps;
1869 params.vhtcaps_mask = &vhtcaps_mask;
1870 wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, &params);
1871 #endif /* CONFIG_VHT_OVERRIDES */
1872 #ifdef CONFIG_HE_OVERRIDES
1873 wpa_supplicant_apply_he_overrides(wpa_s, wpa_s->current_ssid, &params);
1874 #endif /* CONFIG_HE_OVERRIDES */
1875 #ifdef CONFIG_IEEE80211R
1876 if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies &&
1877 get_ie(wpa_s->sme.ft_ies, wpa_s->sme.ft_ies_len,
1878 WLAN_EID_RIC_DATA)) {
1879 /* There seems to be a pretty inconvenient bug in the Linux
1880 * kernel IE splitting functionality when RIC is used. For now,
1881 * skip correct behavior in IE construction here (i.e., drop the
1882 * additional non-FT-specific IEs) to avoid kernel issues. This
1883 * is fine since RIC is used only for testing purposes in the
1884 * current implementation. */
1885 wpa_printf(MSG_INFO,
1886 "SME: Linux kernel workaround - do not try to include additional IEs with RIC");
1887 params.wpa_ie = wpa_s->sme.ft_ies;
1888 params.wpa_ie_len = wpa_s->sme.ft_ies_len;
1889 } else if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
1890 const u8 *rm_en, *pos, *end;
1891 size_t rm_en_len = 0;
1892 u8 *rm_en_dup = NULL, *wpos;
1893
1894 /* Remove RSNE, MDE, FTE to allow them to be overridden with
1895 * FT specific values */
1896 remove_ie(wpa_s->sme.assoc_req_ie,
1897 &wpa_s->sme.assoc_req_ie_len,
1898 WLAN_EID_RSN);
1899 remove_ie(wpa_s->sme.assoc_req_ie,
1900 &wpa_s->sme.assoc_req_ie_len,
1901 WLAN_EID_MOBILITY_DOMAIN);
1902 remove_ie(wpa_s->sme.assoc_req_ie,
1903 &wpa_s->sme.assoc_req_ie_len,
1904 WLAN_EID_FAST_BSS_TRANSITION);
1905 rm_en = get_ie(wpa_s->sme.assoc_req_ie,
1906 wpa_s->sme.assoc_req_ie_len,
1907 WLAN_EID_RRM_ENABLED_CAPABILITIES);
1908 if (rm_en) {
1909 /* Need to remove RM Enabled Capabilities element as
1910 * well temporarily, so that it can be placed between
1911 * RSNE and MDE. */
1912 rm_en_len = 2 + rm_en[1];
1913 rm_en_dup = os_memdup(rm_en, rm_en_len);
1914 remove_ie(wpa_s->sme.assoc_req_ie,
1915 &wpa_s->sme.assoc_req_ie_len,
1916 WLAN_EID_RRM_ENABLED_CAPABILITIES);
1917 }
1918 wpa_hexdump(MSG_DEBUG,
1919 "SME: Association Request IEs after FT IE removal",
1920 wpa_s->sme.assoc_req_ie,
1921 wpa_s->sme.assoc_req_ie_len);
1922 if (wpa_s->sme.assoc_req_ie_len + wpa_s->sme.ft_ies_len +
1923 rm_en_len > sizeof(wpa_s->sme.assoc_req_ie)) {
1924 wpa_printf(MSG_ERROR,
1925 "SME: Not enough buffer room for FT IEs in Association Request frame");
1926 os_free(rm_en_dup);
1927 return;
1928 }
1929
1930 os_memmove(wpa_s->sme.assoc_req_ie + wpa_s->sme.ft_ies_len +
1931 rm_en_len,
1932 wpa_s->sme.assoc_req_ie,
1933 wpa_s->sme.assoc_req_ie_len);
1934 pos = wpa_s->sme.ft_ies;
1935 end = pos + wpa_s->sme.ft_ies_len;
1936 wpos = wpa_s->sme.assoc_req_ie;
1937 if (*pos == WLAN_EID_RSN) {
1938 os_memcpy(wpos, pos, 2 + pos[1]);
1939 wpos += 2 + pos[1];
1940 pos += 2 + pos[1];
1941 }
1942 if (rm_en_dup) {
1943 os_memcpy(wpos, rm_en_dup, rm_en_len);
1944 wpos += rm_en_len;
1945 os_free(rm_en_dup);
1946 }
1947 os_memcpy(wpos, pos, end - pos);
1948 wpa_s->sme.assoc_req_ie_len += wpa_s->sme.ft_ies_len +
1949 rm_en_len;
1950 params.wpa_ie = wpa_s->sme.assoc_req_ie;
1951 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
1952 wpa_hexdump(MSG_DEBUG,
1953 "SME: Association Request IEs after FT override",
1954 params.wpa_ie, params.wpa_ie_len);
1955 }
1956 #endif /* CONFIG_IEEE80211R */
1957 params.mode = mode;
1958 params.mgmt_frame_protection = wpa_s->sme.mfp;
1959 params.rrm_used = wpa_s->rrm.rrm_used;
1960 if (wpa_s->sme.prev_bssid_set)
1961 params.prev_bssid = wpa_s->sme.prev_bssid;
1962
1963 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
1964 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
1965 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
1966 params.freq.freq);
1967
1968 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
1969
1970 if (params.wpa_ie == NULL ||
1971 ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
1972 < 0) {
1973 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
1974 os_memset(&elems, 0, sizeof(elems));
1975 }
1976 if (elems.rsn_ie) {
1977 params.wpa_proto = WPA_PROTO_RSN;
1978 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
1979 elems.rsn_ie_len + 2);
1980 } else if (elems.wpa_ie) {
1981 params.wpa_proto = WPA_PROTO_WPA;
1982 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
1983 elems.wpa_ie_len + 2);
1984 } else if (elems.osen) {
1985 params.wpa_proto = WPA_PROTO_OSEN;
1986 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2,
1987 elems.osen_len + 2);
1988 } else
1989 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1990 if (elems.rsnxe)
1991 wpa_sm_set_assoc_rsnxe(wpa_s->wpa, elems.rsnxe - 2,
1992 elems.rsnxe_len + 2);
1993 else
1994 wpa_sm_set_assoc_rsnxe(wpa_s->wpa, NULL, 0);
1995 if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
1996 params.p2p = 1;
1997
1998 if (wpa_s->p2pdev->set_sta_uapsd)
1999 params.uapsd = wpa_s->p2pdev->sta_uapsd;
2000 else
2001 params.uapsd = -1;
2002
2003 if (wpa_drv_associate(wpa_s, &params) < 0) {
2004 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
2005 "driver failed");
2006 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
2007 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2008 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
2009 return;
2010 }
2011
2012 eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
2013 NULL);
2014
2015 #ifdef CONFIG_TESTING_OPTIONS
2016 wpabuf_free(wpa_s->last_assoc_req_wpa_ie);
2017 wpa_s->last_assoc_req_wpa_ie = NULL;
2018 if (params.wpa_ie)
2019 wpa_s->last_assoc_req_wpa_ie =
2020 wpabuf_alloc_copy(params.wpa_ie, params.wpa_ie_len);
2021 #endif /* CONFIG_TESTING_OPTIONS */
2022 }
2023
2024
2025 int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
2026 const u8 *ies, size_t ies_len)
2027 {
2028 if (md == NULL || ies == NULL) {
2029 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
2030 os_free(wpa_s->sme.ft_ies);
2031 wpa_s->sme.ft_ies = NULL;
2032 wpa_s->sme.ft_ies_len = 0;
2033 wpa_s->sme.ft_used = 0;
2034 return 0;
2035 }
2036
2037 os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
2038 wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
2039 os_free(wpa_s->sme.ft_ies);
2040 wpa_s->sme.ft_ies = os_memdup(ies, ies_len);
2041 if (wpa_s->sme.ft_ies == NULL)
2042 return -1;
2043 wpa_s->sme.ft_ies_len = ies_len;
2044 return 0;
2045 }
2046
2047
2048 static void sme_deauth(struct wpa_supplicant *wpa_s)
2049 {
2050 int bssid_changed;
2051
2052 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
2053
2054 if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
2055 WLAN_REASON_DEAUTH_LEAVING) < 0) {
2056 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
2057 "failed");
2058 }
2059 wpa_s->sme.prev_bssid_set = 0;
2060
2061 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
2062 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2063 os_memset(wpa_s->bssid, 0, ETH_ALEN);
2064 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
2065 if (bssid_changed)
2066 wpas_notify_bssid_changed(wpa_s);
2067 }
2068
2069
2070 void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
2071 union wpa_event_data *data)
2072 {
2073 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
2074 "status code %d", MAC2STR(wpa_s->pending_bssid),
2075 data->assoc_reject.status_code);
2076
2077 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
2078
2079 #ifdef CONFIG_SAE
2080 if (wpa_s->sme.sae_pmksa_caching && wpa_s->current_ssid &&
2081 wpa_key_mgmt_sae(wpa_s->current_ssid->key_mgmt)) {
2082 wpa_dbg(wpa_s, MSG_DEBUG,
2083 "PMKSA caching attempt rejected - drop PMKSA cache entry and fall back to SAE authentication");
2084 wpa_sm_aborted_cached(wpa_s->wpa);
2085 wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid);
2086 if (wpa_s->current_bss) {
2087 struct wpa_bss *bss = wpa_s->current_bss;
2088 struct wpa_ssid *ssid = wpa_s->current_ssid;
2089
2090 wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
2091 WLAN_REASON_DEAUTH_LEAVING);
2092 wpas_connect_work_done(wpa_s);
2093 wpa_supplicant_mark_disassoc(wpa_s);
2094 wpa_supplicant_connect(wpa_s, bss, ssid);
2095 return;
2096 }
2097 }
2098 #endif /* CONFIG_SAE */
2099
2100 /*
2101 * For now, unconditionally terminate the previous authentication. In
2102 * theory, this should not be needed, but mac80211 gets quite confused
2103 * if the authentication is left pending.. Some roaming cases might
2104 * benefit from using the previous authentication, so this could be
2105 * optimized in the future.
2106 */
2107 sme_deauth(wpa_s);
2108 }
2109
2110
2111 void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
2112 union wpa_event_data *data)
2113 {
2114 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
2115 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
2116 wpa_supplicant_mark_disassoc(wpa_s);
2117 }
2118
2119
2120 void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
2121 union wpa_event_data *data)
2122 {
2123 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
2124 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
2125 wpa_supplicant_mark_disassoc(wpa_s);
2126 }
2127
2128
2129 void sme_event_disassoc(struct wpa_supplicant *wpa_s,
2130 struct disassoc_info *info)
2131 {
2132 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
2133 if (wpa_s->sme.prev_bssid_set) {
2134 /*
2135 * cfg80211/mac80211 can get into somewhat confused state if
2136 * the AP only disassociates us and leaves us in authenticated
2137 * state. For now, force the state to be cleared to avoid
2138 * confusing errors if we try to associate with the AP again.
2139 */
2140 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
2141 "driver state");
2142 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
2143 WLAN_REASON_DEAUTH_LEAVING);
2144 }
2145 }
2146
2147
2148 static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
2149 {
2150 struct wpa_supplicant *wpa_s = eloop_ctx;
2151 if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
2152 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
2153 sme_deauth(wpa_s);
2154 }
2155 }
2156
2157
2158 static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
2159 {
2160 struct wpa_supplicant *wpa_s = eloop_ctx;
2161 if (wpa_s->wpa_state == WPA_ASSOCIATING) {
2162 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
2163 sme_deauth(wpa_s);
2164 }
2165 }
2166
2167
2168 void sme_state_changed(struct wpa_supplicant *wpa_s)
2169 {
2170 /* Make sure timers are cleaned up appropriately. */
2171 if (wpa_s->wpa_state != WPA_ASSOCIATING)
2172 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
2173 if (wpa_s->wpa_state != WPA_AUTHENTICATING)
2174 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
2175 }
2176
2177
2178 void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
2179 const u8 *prev_pending_bssid)
2180 {
2181 /*
2182 * mac80211-workaround to force deauth on failed auth cmd,
2183 * requires us to remain in authenticating state to allow the
2184 * second authentication attempt to be continued properly.
2185 */
2186 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
2187 "to proceed after disconnection event");
2188 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
2189 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
2190
2191 /*
2192 * Re-arm authentication timer in case auth fails for whatever reason.
2193 */
2194 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
2195 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
2196 NULL);
2197 }
2198
2199
2200 void sme_clear_on_disassoc(struct wpa_supplicant *wpa_s)
2201 {
2202 wpa_s->sme.prev_bssid_set = 0;
2203 #ifdef CONFIG_SAE
2204 wpabuf_free(wpa_s->sme.sae_token);
2205 wpa_s->sme.sae_token = NULL;
2206 sae_clear_data(&wpa_s->sme.sae);
2207 #endif /* CONFIG_SAE */
2208 #ifdef CONFIG_IEEE80211R
2209 if (wpa_s->sme.ft_ies || wpa_s->sme.ft_used)
2210 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
2211 #endif /* CONFIG_IEEE80211R */
2212 sme_stop_sa_query(wpa_s);
2213 }
2214
2215
2216 void sme_deinit(struct wpa_supplicant *wpa_s)
2217 {
2218 sme_clear_on_disassoc(wpa_s);
2219 #ifdef CONFIG_SAE
2220 os_free(wpa_s->sme.sae_rejected_groups);
2221 wpa_s->sme.sae_rejected_groups = NULL;
2222 #endif /* CONFIG_SAE */
2223
2224 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
2225 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
2226 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
2227 }
2228
2229
2230 static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
2231 const u8 *chan_list, u8 num_channels,
2232 u8 num_intol)
2233 {
2234 struct ieee80211_2040_bss_coex_ie *bc_ie;
2235 struct ieee80211_2040_intol_chan_report *ic_report;
2236 struct wpabuf *buf;
2237
2238 wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR
2239 " (num_channels=%u num_intol=%u)",
2240 MAC2STR(wpa_s->bssid), num_channels, num_intol);
2241 wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels",
2242 chan_list, num_channels);
2243
2244 buf = wpabuf_alloc(2 + /* action.category + action_code */
2245 sizeof(struct ieee80211_2040_bss_coex_ie) +
2246 sizeof(struct ieee80211_2040_intol_chan_report) +
2247 num_channels);
2248 if (buf == NULL)
2249 return;
2250
2251 wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
2252 wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
2253
2254 bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
2255 bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
2256 bc_ie->length = 1;
2257 if (num_intol)
2258 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
2259
2260 if (num_channels > 0) {
2261 ic_report = wpabuf_put(buf, sizeof(*ic_report));
2262 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
2263 ic_report->length = num_channels + 1;
2264 ic_report->op_class = 0;
2265 os_memcpy(wpabuf_put(buf, num_channels), chan_list,
2266 num_channels);
2267 }
2268
2269 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
2270 wpa_s->own_addr, wpa_s->bssid,
2271 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
2272 wpa_msg(wpa_s, MSG_INFO,
2273 "SME: Failed to send 20/40 BSS Coexistence frame");
2274 }
2275
2276 wpabuf_free(buf);
2277 }
2278
2279
2280 int sme_proc_obss_scan(struct wpa_supplicant *wpa_s,
2281 struct wpa_scan_results *scan_res)
2282 {
2283 const u8 *ie;
2284 u8 chan_list[P2P_MAX_CHANNELS], channel;
2285 u8 num_channels = 0, num_intol = 0, i;
2286 size_t j;
2287 int pri_freq, sec_freq;
2288
2289 if (!wpa_s->sme.sched_obss_scan)
2290 return 0;
2291
2292 wpa_s->sme.sched_obss_scan = 0;
2293 if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
2294 return 1;
2295
2296 /*
2297 * Check whether AP uses regulatory triplet or channel triplet in
2298 * country info. Right now the operating class of the BSS channel
2299 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
2300 * based on the assumption that operating class triplet is not used in
2301 * beacon frame. If the First Channel Number/Operating Extension
2302 * Identifier octet has a positive integer value of 201 or greater,
2303 * then its operating class triplet.
2304 *
2305 * TODO: If Supported Operating Classes element is present in beacon
2306 * frame, have to lookup operating class in Annex E and fill them in
2307 * 2040 coex frame.
2308 */
2309 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
2310 if (ie && (ie[1] >= 6) && (ie[5] >= 201))
2311 return 1;
2312
2313 os_memset(chan_list, 0, sizeof(chan_list));
2314
2315 pri_freq = wpa_s->assoc_freq;
2316
2317 switch (wpa_s->sme.ht_sec_chan) {
2318 case HT_SEC_CHAN_ABOVE:
2319 sec_freq = pri_freq + 20;
2320 break;
2321 case HT_SEC_CHAN_BELOW:
2322 sec_freq = pri_freq - 20;
2323 break;
2324 case HT_SEC_CHAN_UNKNOWN:
2325 default:
2326 wpa_msg(wpa_s, MSG_WARNING,
2327 "Undefined secondary channel: drop OBSS scan results");
2328 return 1;
2329 }
2330
2331 for (j = 0; j < scan_res->num; j++) {
2332 struct wpa_scan_res *bss = scan_res->res[j];
2333 enum hostapd_hw_mode mode;
2334 int res;
2335
2336 /* Skip other band bss */
2337 mode = ieee80211_freq_to_chan(bss->freq, &channel);
2338 if (mode != HOSTAPD_MODE_IEEE80211G &&
2339 mode != HOSTAPD_MODE_IEEE80211B)
2340 continue;
2341
2342 res = check_bss_coex_40mhz(bss, pri_freq, sec_freq);
2343 if (res) {
2344 if (res == 2)
2345 num_intol++;
2346
2347 /* Check whether the channel is already considered */
2348 for (i = 0; i < num_channels; i++) {
2349 if (channel == chan_list[i])
2350 break;
2351 }
2352 if (i != num_channels)
2353 continue;
2354
2355 chan_list[num_channels++] = channel;
2356 }
2357 }
2358
2359 sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
2360 return 1;
2361 }
2362
2363
2364 static void wpa_obss_scan_freqs_list(struct wpa_supplicant *wpa_s,
2365 struct wpa_driver_scan_params *params)
2366 {
2367 /* Include only affected channels */
2368 struct hostapd_hw_modes *mode;
2369 int count, i;
2370 int start, end;
2371
2372 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
2373 HOSTAPD_MODE_IEEE80211G, 0);
2374 if (mode == NULL) {
2375 /* No channels supported in this band - use empty list */
2376 params->freqs = os_zalloc(sizeof(int));
2377 return;
2378 }
2379
2380 if (wpa_s->sme.ht_sec_chan == HT_SEC_CHAN_UNKNOWN &&
2381 wpa_s->current_bss) {
2382 const u8 *ie;
2383
2384 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_OPERATION);
2385 if (ie && ie[1] >= 2) {
2386 u8 o;
2387
2388 o = ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK;
2389 if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
2390 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_ABOVE;
2391 else if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
2392 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_BELOW;
2393 }
2394 }
2395
2396 start = wpa_s->assoc_freq - 10;
2397 end = wpa_s->assoc_freq + 10;
2398 switch (wpa_s->sme.ht_sec_chan) {
2399 case HT_SEC_CHAN_UNKNOWN:
2400 /* HT40+ possible on channels 1..9 */
2401 if (wpa_s->assoc_freq <= 2452)
2402 start -= 20;
2403 /* HT40- possible on channels 5-13 */
2404 if (wpa_s->assoc_freq >= 2432)
2405 end += 20;
2406 break;
2407 case HT_SEC_CHAN_ABOVE:
2408 end += 20;
2409 break;
2410 case HT_SEC_CHAN_BELOW:
2411 start -= 20;
2412 break;
2413 }
2414 wpa_printf(MSG_DEBUG,
2415 "OBSS: assoc_freq %d possible affected range %d-%d",
2416 wpa_s->assoc_freq, start, end);
2417
2418 params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
2419 if (params->freqs == NULL)
2420 return;
2421 for (count = 0, i = 0; i < mode->num_channels; i++) {
2422 int freq;
2423
2424 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
2425 continue;
2426 freq = mode->channels[i].freq;
2427 if (freq - 10 >= end || freq + 10 <= start)
2428 continue; /* not affected */
2429 params->freqs[count++] = freq;
2430 }
2431 }
2432
2433
2434 static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
2435 {
2436 struct wpa_supplicant *wpa_s = eloop_ctx;
2437 struct wpa_driver_scan_params params;
2438
2439 if (!wpa_s->current_bss) {
2440 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
2441 return;
2442 }
2443
2444 os_memset(&params, 0, sizeof(params));
2445 wpa_obss_scan_freqs_list(wpa_s, &params);
2446 params.low_priority = 1;
2447 wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
2448
2449 if (wpa_supplicant_trigger_scan(wpa_s, &params))
2450 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
2451 else
2452 wpa_s->sme.sched_obss_scan = 1;
2453 os_free(params.freqs);
2454
2455 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
2456 sme_obss_scan_timeout, wpa_s, NULL);
2457 }
2458
2459
2460 void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
2461 {
2462 const u8 *ie;
2463 struct wpa_bss *bss = wpa_s->current_bss;
2464 struct wpa_ssid *ssid = wpa_s->current_ssid;
2465 struct hostapd_hw_modes *hw_mode = NULL;
2466 int i;
2467
2468 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
2469 wpa_s->sme.sched_obss_scan = 0;
2470 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_UNKNOWN;
2471 if (!enable)
2472 return;
2473
2474 /*
2475 * Schedule OBSS scan if driver is using station SME in wpa_supplicant
2476 * or it expects OBSS scan to be performed by wpa_supplicant.
2477 */
2478 if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
2479 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
2480 ssid == NULL || ssid->mode != WPAS_MODE_INFRA)
2481 return;
2482
2483 if (!wpa_s->hw.modes)
2484 return;
2485
2486 /* only HT caps in 11g mode are relevant */
2487 for (i = 0; i < wpa_s->hw.num_modes; i++) {
2488 hw_mode = &wpa_s->hw.modes[i];
2489 if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
2490 break;
2491 }
2492
2493 /* Driver does not support HT40 for 11g or doesn't have 11g. */
2494 if (i == wpa_s->hw.num_modes || !hw_mode ||
2495 !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
2496 return;
2497
2498 if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
2499 return; /* Not associated on 2.4 GHz band */
2500
2501 /* Check whether AP supports HT40 */
2502 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
2503 if (!ie || ie[1] < 2 ||
2504 !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
2505 return; /* AP does not support HT40 */
2506
2507 ie = wpa_bss_get_ie(wpa_s->current_bss,
2508 WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
2509 if (!ie || ie[1] < 14)
2510 return; /* AP does not request OBSS scans */
2511
2512 wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
2513 if (wpa_s->sme.obss_scan_int < 10) {
2514 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
2515 "replaced with the minimum 10 sec",
2516 wpa_s->sme.obss_scan_int);
2517 wpa_s->sme.obss_scan_int = 10;
2518 }
2519 wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
2520 wpa_s->sme.obss_scan_int);
2521 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
2522 sme_obss_scan_timeout, wpa_s, NULL);
2523 }
2524
2525
2526 static const unsigned int sa_query_max_timeout = 1000;
2527 static const unsigned int sa_query_retry_timeout = 201;
2528 static const unsigned int sa_query_ch_switch_max_delay = 5000; /* in usec */
2529
2530 static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
2531 {
2532 u32 tu;
2533 struct os_reltime now, passed;
2534 os_get_reltime(&now);
2535 os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed);
2536 tu = (passed.sec * 1000000 + passed.usec) / 1024;
2537 if (sa_query_max_timeout < tu) {
2538 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
2539 sme_stop_sa_query(wpa_s);
2540 wpa_supplicant_deauthenticate(
2541 wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
2542 return 1;
2543 }
2544
2545 return 0;
2546 }
2547
2548
2549 static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
2550 const u8 *trans_id)
2551 {
2552 u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN + OCV_OCI_EXTENDED_LEN];
2553 u8 req_len = 2 + WLAN_SA_QUERY_TR_ID_LEN;
2554
2555 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
2556 MACSTR, MAC2STR(wpa_s->bssid));
2557 wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
2558 trans_id, WLAN_SA_QUERY_TR_ID_LEN);
2559 req[0] = WLAN_ACTION_SA_QUERY;
2560 req[1] = WLAN_SA_QUERY_REQUEST;
2561 os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
2562
2563 #ifdef CONFIG_OCV
2564 if (wpa_sm_ocv_enabled(wpa_s->wpa)) {
2565 struct wpa_channel_info ci;
2566
2567 if (wpa_drv_channel_info(wpa_s, &ci) != 0) {
2568 wpa_printf(MSG_WARNING,
2569 "Failed to get channel info for OCI element in SA Query Request frame");
2570 return;
2571 }
2572
2573 if (ocv_insert_extended_oci(&ci, req + req_len) < 0)
2574 return;
2575
2576 req_len += OCV_OCI_EXTENDED_LEN;
2577 }
2578 #endif /* CONFIG_OCV */
2579
2580 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
2581 wpa_s->own_addr, wpa_s->bssid,
2582 req, req_len, 0) < 0)
2583 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
2584 "Request");
2585 }
2586
2587
2588 static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
2589 {
2590 struct wpa_supplicant *wpa_s = eloop_ctx;
2591 unsigned int timeout, sec, usec;
2592 u8 *trans_id, *nbuf;
2593
2594 if (wpa_s->sme.sa_query_count > 0 &&
2595 sme_check_sa_query_timeout(wpa_s))
2596 return;
2597
2598 nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
2599 wpa_s->sme.sa_query_count + 1,
2600 WLAN_SA_QUERY_TR_ID_LEN);
2601 if (nbuf == NULL) {
2602 sme_stop_sa_query(wpa_s);
2603 return;
2604 }
2605 if (wpa_s->sme.sa_query_count == 0) {
2606 /* Starting a new SA Query procedure */
2607 os_get_reltime(&wpa_s->sme.sa_query_start);
2608 }
2609 trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
2610 wpa_s->sme.sa_query_trans_id = nbuf;
2611 wpa_s->sme.sa_query_count++;
2612
2613 if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) {
2614 wpa_printf(MSG_DEBUG, "Could not generate SA Query ID");
2615 sme_stop_sa_query(wpa_s);
2616 return;
2617 }
2618
2619 timeout = sa_query_retry_timeout;
2620 sec = ((timeout / 1000) * 1024) / 1000;
2621 usec = (timeout % 1000) * 1024;
2622 eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
2623
2624 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
2625 wpa_s->sme.sa_query_count);
2626
2627 sme_send_sa_query_req(wpa_s, trans_id);
2628 }
2629
2630
2631 static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
2632 {
2633 sme_sa_query_timer(wpa_s, NULL);
2634 }
2635
2636
2637 static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
2638 {
2639 if (wpa_s->sme.sa_query_trans_id)
2640 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Stop SA Query");
2641 eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
2642 os_free(wpa_s->sme.sa_query_trans_id);
2643 wpa_s->sme.sa_query_trans_id = NULL;
2644 wpa_s->sme.sa_query_count = 0;
2645 }
2646
2647
2648 void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
2649 const u8 *da, u16 reason_code)
2650 {
2651 struct wpa_ssid *ssid;
2652 struct os_reltime now;
2653
2654 if (wpa_s->wpa_state != WPA_COMPLETED)
2655 return;
2656 ssid = wpa_s->current_ssid;
2657 if (wpas_get_ssid_pmf(wpa_s, ssid) == NO_MGMT_FRAME_PROTECTION)
2658 return;
2659 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
2660 return;
2661 if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
2662 reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
2663 return;
2664 if (wpa_s->sme.sa_query_count > 0)
2665 return;
2666 #ifdef CONFIG_TESTING_OPTIONS
2667 if (wpa_s->disable_sa_query)
2668 return;
2669 #endif /* CONFIG_TESTING_OPTIONS */
2670
2671 os_get_reltime(&now);
2672 if (wpa_s->sme.last_unprot_disconnect.sec &&
2673 !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10))
2674 return; /* limit SA Query procedure frequency */
2675 wpa_s->sme.last_unprot_disconnect = now;
2676
2677 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
2678 "possible AP/STA state mismatch - trigger SA Query");
2679 sme_start_sa_query(wpa_s);
2680 }
2681
2682
2683 void sme_event_ch_switch(struct wpa_supplicant *wpa_s)
2684 {
2685 unsigned int usec;
2686 u32 _rand;
2687
2688 if (wpa_s->wpa_state != WPA_COMPLETED ||
2689 !wpa_sm_ocv_enabled(wpa_s->wpa))
2690 return;
2691
2692 wpa_dbg(wpa_s, MSG_DEBUG,
2693 "SME: Channel switch completed - trigger new SA Query to verify new operating channel");
2694 sme_stop_sa_query(wpa_s);
2695
2696 if (os_get_random((u8 *) &_rand, sizeof(_rand)) < 0)
2697 _rand = os_random();
2698 usec = _rand % (sa_query_ch_switch_max_delay + 1);
2699 eloop_register_timeout(0, usec, sme_sa_query_timer, wpa_s, NULL);
2700 }
2701
2702
2703 static void sme_process_sa_query_request(struct wpa_supplicant *wpa_s,
2704 const u8 *sa, const u8 *data,
2705 size_t len)
2706 {
2707 u8 resp[2 + WLAN_SA_QUERY_TR_ID_LEN + OCV_OCI_EXTENDED_LEN];
2708 u8 resp_len = 2 + WLAN_SA_QUERY_TR_ID_LEN;
2709
2710 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Response to "
2711 MACSTR, MAC2STR(wpa_s->bssid));
2712
2713 resp[0] = WLAN_ACTION_SA_QUERY;
2714 resp[1] = WLAN_SA_QUERY_RESPONSE;
2715 os_memcpy(resp + 2, data + 1, WLAN_SA_QUERY_TR_ID_LEN);
2716
2717 #ifdef CONFIG_OCV
2718 if (wpa_sm_ocv_enabled(wpa_s->wpa)) {
2719 struct wpa_channel_info ci;
2720
2721 if (wpa_drv_channel_info(wpa_s, &ci) != 0) {
2722 wpa_printf(MSG_WARNING,
2723 "Failed to get channel info for OCI element in SA Query Response frame");
2724 return;
2725 }
2726
2727 if (ocv_insert_extended_oci(&ci, resp + resp_len) < 0)
2728 return;
2729
2730 resp_len += OCV_OCI_EXTENDED_LEN;
2731 }
2732 #endif /* CONFIG_OCV */
2733
2734 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
2735 wpa_s->own_addr, wpa_s->bssid,
2736 resp, resp_len, 0) < 0)
2737 wpa_msg(wpa_s, MSG_INFO,
2738 "SME: Failed to send SA Query Response");
2739 }
2740
2741
2742 static void sme_process_sa_query_response(struct wpa_supplicant *wpa_s,
2743 const u8 *sa, const u8 *data,
2744 size_t len)
2745 {
2746 int i;
2747
2748 if (!wpa_s->sme.sa_query_trans_id)
2749 return;
2750
2751 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
2752 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
2753
2754 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
2755 return;
2756
2757 for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
2758 if (os_memcmp(wpa_s->sme.sa_query_trans_id +
2759 i * WLAN_SA_QUERY_TR_ID_LEN,
2760 data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
2761 break;
2762 }
2763
2764 if (i >= wpa_s->sme.sa_query_count) {
2765 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
2766 "transaction identifier found");
2767 return;
2768 }
2769
2770 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
2771 "from " MACSTR, MAC2STR(sa));
2772 sme_stop_sa_query(wpa_s);
2773 }
2774
2775
2776 void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
2777 const u8 *data, size_t len)
2778 {
2779 if (len < 1 + WLAN_SA_QUERY_TR_ID_LEN)
2780 return;
2781
2782 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query frame from "
2783 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
2784
2785 #ifdef CONFIG_OCV
2786 if (wpa_sm_ocv_enabled(wpa_s->wpa)) {
2787 struct ieee802_11_elems elems;
2788 struct wpa_channel_info ci;
2789
2790 if (ieee802_11_parse_elems(data + 1 + WLAN_SA_QUERY_TR_ID_LEN,
2791 len - 1 - WLAN_SA_QUERY_TR_ID_LEN,
2792 &elems, 1) == ParseFailed) {
2793 wpa_printf(MSG_DEBUG,
2794 "SA Query: Failed to parse elements");
2795 return;
2796 }
2797
2798 if (wpa_drv_channel_info(wpa_s, &ci) != 0) {
2799 wpa_printf(MSG_WARNING,
2800 "Failed to get channel info to validate received OCI in SA Query Action frame");
2801 return;
2802 }
2803
2804 if (ocv_verify_tx_params(elems.oci, elems.oci_len, &ci,
2805 channel_width_to_int(ci.chanwidth),
2806 ci.seg1_idx) != 0) {
2807 wpa_printf(MSG_WARNING, "%s", ocv_errorstr);
2808 return;
2809 }
2810 }
2811 #endif /* CONFIG_OCV */
2812
2813 if (data[0] == WLAN_SA_QUERY_REQUEST)
2814 sme_process_sa_query_request(wpa_s, sa, data, len);
2815 else if (data[0] == WLAN_SA_QUERY_RESPONSE)
2816 sme_process_sa_query_response(wpa_s, sa, data, len);
2817 }
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