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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 "eapol_supp/eapol_supp_sm.h"
17 #include "common/wpa_common.h"
18 #include "common/sae.h"
19 #include "common/dpp.h"
20 #include "rsn_supp/wpa.h"
21 #include "rsn_supp/pmksa_cache.h"
22 #include "config.h"
23 #include "wpa_supplicant_i.h"
24 #include "driver_i.h"
25 #include "wpas_glue.h"
26 #include "wps_supplicant.h"
27 #include "p2p_supplicant.h"
28 #include "notify.h"
29 #include "bss.h"
30 #include "scan.h"
31 #include "sme.h"
32 #include "hs20_supplicant.h"
33
34 #define SME_AUTH_TIMEOUT 5
35 #define SME_ASSOC_TIMEOUT 5
36
37 static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx);
38 static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx);
39 static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx);
40 #ifdef CONFIG_IEEE80211W
41 static void sme_stop_sa_query(struct wpa_supplicant *wpa_s);
42 #endif /* CONFIG_IEEE80211W */
43
44
45 #ifdef CONFIG_SAE
46
47 static int index_within_array(const int *array, int idx)
48 {
49 int i;
50 for (i = 0; i < idx; i++) {
51 if (array[i] <= 0)
52 return 0;
53 }
54 return 1;
55 }
56
57
58 static int sme_set_sae_group(struct wpa_supplicant *wpa_s)
59 {
60 int *groups = wpa_s->conf->sae_groups;
61 int default_groups[] = { 19, 20, 21, 0 };
62
63 if (!groups || groups[0] <= 0)
64 groups = default_groups;
65
66 /* Configuration may have changed, so validate current index */
67 if (!index_within_array(groups, wpa_s->sme.sae_group_index))
68 return -1;
69
70 for (;;) {
71 int group = groups[wpa_s->sme.sae_group_index];
72 if (group <= 0)
73 break;
74 if (sae_set_group(&wpa_s->sme.sae, group) == 0) {
75 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected SAE group %d",
76 wpa_s->sme.sae.group);
77 return 0;
78 }
79 wpa_s->sme.sae_group_index++;
80 }
81
82 return -1;
83 }
84
85
86 static struct wpabuf * sme_auth_build_sae_commit(struct wpa_supplicant *wpa_s,
87 struct wpa_ssid *ssid,
88 const u8 *bssid, int external,
89 int reuse)
90 {
91 struct wpabuf *buf;
92 size_t len;
93 const char *password;
94
95 #ifdef CONFIG_TESTING_OPTIONS
96 if (wpa_s->sae_commit_override) {
97 wpa_printf(MSG_DEBUG, "SAE: TESTING - commit override");
98 buf = wpabuf_alloc(4 + wpabuf_len(wpa_s->sae_commit_override));
99 if (!buf)
100 return NULL;
101 if (!external) {
102 wpabuf_put_le16(buf, 1); /* Transaction seq# */
103 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
104 }
105 wpabuf_put_buf(buf, wpa_s->sae_commit_override);
106 return buf;
107 }
108 #endif /* CONFIG_TESTING_OPTIONS */
109
110 password = ssid->sae_password;
111 if (!password)
112 password = ssid->passphrase;
113 if (!password) {
114 wpa_printf(MSG_DEBUG, "SAE: No password available");
115 return NULL;
116 }
117
118 if (reuse && wpa_s->sme.sae.tmp &&
119 os_memcmp(bssid, wpa_s->sme.sae.tmp->bssid, ETH_ALEN) == 0) {
120 wpa_printf(MSG_DEBUG,
121 "SAE: Reuse previously generated PWE on a retry with the same AP");
122 goto reuse_data;
123 }
124 if (sme_set_sae_group(wpa_s) < 0) {
125 wpa_printf(MSG_DEBUG, "SAE: Failed to select group");
126 return NULL;
127 }
128
129 if (sae_prepare_commit(wpa_s->own_addr, bssid,
130 (u8 *) password, os_strlen(password),
131 ssid->sae_password_id,
132 &wpa_s->sme.sae) < 0) {
133 wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE");
134 return NULL;
135 }
136 if (wpa_s->sme.sae.tmp)
137 os_memcpy(wpa_s->sme.sae.tmp->bssid, bssid, ETH_ALEN);
138
139 reuse_data:
140 len = wpa_s->sme.sae_token ? wpabuf_len(wpa_s->sme.sae_token) : 0;
141 if (ssid->sae_password_id)
142 len += 4 + os_strlen(ssid->sae_password_id);
143 buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + len);
144 if (buf == NULL)
145 return NULL;
146 if (!external) {
147 wpabuf_put_le16(buf, 1); /* Transaction seq# */
148 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
149 }
150 sae_write_commit(&wpa_s->sme.sae, buf, wpa_s->sme.sae_token,
151 ssid->sae_password_id);
152
153 return buf;
154 }
155
156
157 static struct wpabuf * sme_auth_build_sae_confirm(struct wpa_supplicant *wpa_s,
158 int external)
159 {
160 struct wpabuf *buf;
161
162 buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN);
163 if (buf == NULL)
164 return NULL;
165
166 if (!external) {
167 wpabuf_put_le16(buf, 2); /* Transaction seq# */
168 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
169 }
170 sae_write_confirm(&wpa_s->sme.sae, buf);
171
172 return buf;
173 }
174
175 #endif /* CONFIG_SAE */
176
177
178 /**
179 * sme_auth_handle_rrm - Handle RRM aspects of current authentication attempt
180 * @wpa_s: Pointer to wpa_supplicant data
181 * @bss: Pointer to the bss which is the target of authentication attempt
182 */
183 static void sme_auth_handle_rrm(struct wpa_supplicant *wpa_s,
184 struct wpa_bss *bss)
185 {
186 const u8 rrm_ie_len = 5;
187 u8 *pos;
188 const u8 *rrm_ie;
189
190 wpa_s->rrm.rrm_used = 0;
191
192 wpa_printf(MSG_DEBUG,
193 "RRM: Determining whether RRM can be used - device support: 0x%x",
194 wpa_s->drv_rrm_flags);
195
196 rrm_ie = wpa_bss_get_ie(bss, WLAN_EID_RRM_ENABLED_CAPABILITIES);
197 if (!rrm_ie || !(bss->caps & IEEE80211_CAP_RRM)) {
198 wpa_printf(MSG_DEBUG, "RRM: No RRM in network");
199 return;
200 }
201
202 if (!((wpa_s->drv_rrm_flags &
203 WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) &&
204 (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET)) &&
205 !(wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_SUPPORT_RRM)) {
206 wpa_printf(MSG_DEBUG,
207 "RRM: Insufficient RRM support in driver - do not use RRM");
208 return;
209 }
210
211 if (sizeof(wpa_s->sme.assoc_req_ie) <
212 wpa_s->sme.assoc_req_ie_len + rrm_ie_len + 2) {
213 wpa_printf(MSG_INFO,
214 "RRM: Unable to use RRM, no room for RRM IE");
215 return;
216 }
217
218 wpa_printf(MSG_DEBUG, "RRM: Adding RRM IE to Association Request");
219 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
220 os_memset(pos, 0, 2 + rrm_ie_len);
221 *pos++ = WLAN_EID_RRM_ENABLED_CAPABILITIES;
222 *pos++ = rrm_ie_len;
223
224 /* Set supported capabilites flags */
225 if (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION)
226 *pos |= WLAN_RRM_CAPS_LINK_MEASUREMENT;
227
228 *pos |= WLAN_RRM_CAPS_BEACON_REPORT_PASSIVE |
229 WLAN_RRM_CAPS_BEACON_REPORT_ACTIVE |
230 WLAN_RRM_CAPS_BEACON_REPORT_TABLE;
231
232 if (wpa_s->lci)
233 pos[1] |= WLAN_RRM_CAPS_LCI_MEASUREMENT;
234
235 wpa_s->sme.assoc_req_ie_len += rrm_ie_len + 2;
236 wpa_s->rrm.rrm_used = 1;
237 }
238
239
240 static void sme_send_authentication(struct wpa_supplicant *wpa_s,
241 struct wpa_bss *bss, struct wpa_ssid *ssid,
242 int start)
243 {
244 struct wpa_driver_auth_params params;
245 struct wpa_ssid *old_ssid;
246 #ifdef CONFIG_IEEE80211R
247 const u8 *ie;
248 #endif /* CONFIG_IEEE80211R */
249 #if defined(CONFIG_IEEE80211R) || defined(CONFIG_FILS)
250 const u8 *md = NULL;
251 #endif /* CONFIG_IEEE80211R || CONFIG_FILS */
252 int i, bssid_changed;
253 struct wpabuf *resp = NULL;
254 u8 ext_capab[18];
255 int ext_capab_len;
256 int skip_auth;
257 u8 *wpa_ie;
258 size_t wpa_ie_len;
259 #ifdef CONFIG_MBO
260 const u8 *mbo_ie;
261 #endif /* CONFIG_MBO */
262
263 if (bss == NULL) {
264 wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for "
265 "the network");
266 wpas_connect_work_done(wpa_s);
267 return;
268 }
269
270 skip_auth = wpa_s->conf->reassoc_same_bss_optim &&
271 wpa_s->reassoc_same_bss;
272 wpa_s->current_bss = bss;
273
274 os_memset(&params, 0, sizeof(params));
275 wpa_s->reassociate = 0;
276
277 params.freq = bss->freq;
278 params.bssid = bss->bssid;
279 params.ssid = bss->ssid;
280 params.ssid_len = bss->ssid_len;
281 params.p2p = ssid->p2p_group;
282
283 if (wpa_s->sme.ssid_len != params.ssid_len ||
284 os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
285 wpa_s->sme.prev_bssid_set = 0;
286
287 wpa_s->sme.freq = params.freq;
288 os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
289 wpa_s->sme.ssid_len = params.ssid_len;
290
291 params.auth_alg = WPA_AUTH_ALG_OPEN;
292 #ifdef IEEE8021X_EAPOL
293 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
294 if (ssid->leap) {
295 if (ssid->non_leap == 0)
296 params.auth_alg = WPA_AUTH_ALG_LEAP;
297 else
298 params.auth_alg |= WPA_AUTH_ALG_LEAP;
299 }
300 }
301 #endif /* IEEE8021X_EAPOL */
302 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
303 params.auth_alg);
304 if (ssid->auth_alg) {
305 params.auth_alg = ssid->auth_alg;
306 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
307 "0x%x", params.auth_alg);
308 }
309 #ifdef CONFIG_SAE
310 wpa_s->sme.sae_pmksa_caching = 0;
311 if (wpa_key_mgmt_sae(ssid->key_mgmt)) {
312 const u8 *rsn;
313 struct wpa_ie_data ied;
314
315 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
316 if (!rsn) {
317 wpa_dbg(wpa_s, MSG_DEBUG,
318 "SAE enabled, but target BSS does not advertise RSN");
319 #ifdef CONFIG_DPP
320 } else if (wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 &&
321 (ssid->key_mgmt & WPA_KEY_MGMT_DPP) &&
322 (ied.key_mgmt & WPA_KEY_MGMT_DPP)) {
323 wpa_dbg(wpa_s, MSG_DEBUG, "Prefer DPP over SAE when both are enabled");
324 #endif /* CONFIG_DPP */
325 } else if (wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 &&
326 wpa_key_mgmt_sae(ied.key_mgmt)) {
327 wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg");
328 params.auth_alg = WPA_AUTH_ALG_SAE;
329 } else {
330 wpa_dbg(wpa_s, MSG_DEBUG,
331 "SAE enabled, but target BSS does not advertise SAE AKM for RSN");
332 }
333 }
334 #endif /* CONFIG_SAE */
335
336 for (i = 0; i < NUM_WEP_KEYS; i++) {
337 if (ssid->wep_key_len[i])
338 params.wep_key[i] = ssid->wep_key[i];
339 params.wep_key_len[i] = ssid->wep_key_len[i];
340 }
341 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
342
343 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
344 os_memset(wpa_s->bssid, 0, ETH_ALEN);
345 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
346 if (bssid_changed)
347 wpas_notify_bssid_changed(wpa_s);
348
349 if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
350 wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
351 wpa_key_mgmt_wpa(ssid->key_mgmt)) {
352 int try_opportunistic;
353 const u8 *cache_id = NULL;
354
355 try_opportunistic = (ssid->proactive_key_caching < 0 ?
356 wpa_s->conf->okc :
357 ssid->proactive_key_caching) &&
358 (ssid->proto & WPA_PROTO_RSN);
359 #ifdef CONFIG_FILS
360 if (wpa_key_mgmt_fils(ssid->key_mgmt))
361 cache_id = wpa_bss_get_fils_cache_id(bss);
362 #endif /* CONFIG_FILS */
363 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
364 wpa_s->current_ssid,
365 try_opportunistic, cache_id,
366 0) == 0)
367 eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
368 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
369 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
370 wpa_s->sme.assoc_req_ie,
371 &wpa_s->sme.assoc_req_ie_len)) {
372 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
373 "key management and encryption suites");
374 wpas_connect_work_done(wpa_s);
375 return;
376 }
377 #ifdef CONFIG_HS20
378 } else if (wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE) &&
379 (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)) {
380 /* No PMKSA caching, but otherwise similar to RSN/WPA */
381 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
382 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
383 wpa_s->sme.assoc_req_ie,
384 &wpa_s->sme.assoc_req_ie_len)) {
385 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
386 "key management and encryption suites");
387 wpas_connect_work_done(wpa_s);
388 return;
389 }
390 #endif /* CONFIG_HS20 */
391 } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
392 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) {
393 /*
394 * Both WPA and non-WPA IEEE 802.1X enabled in configuration -
395 * use non-WPA since the scan results did not indicate that the
396 * AP is using WPA or WPA2.
397 */
398 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
399 wpa_s->sme.assoc_req_ie_len = 0;
400 } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
401 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
402 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
403 wpa_s->sme.assoc_req_ie,
404 &wpa_s->sme.assoc_req_ie_len)) {
405 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
406 "key management and encryption suites (no "
407 "scan results)");
408 wpas_connect_work_done(wpa_s);
409 return;
410 }
411 #ifdef CONFIG_WPS
412 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
413 struct wpabuf *wps_ie;
414 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
415 if (wps_ie && wpabuf_len(wps_ie) <=
416 sizeof(wpa_s->sme.assoc_req_ie)) {
417 wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
418 os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
419 wpa_s->sme.assoc_req_ie_len);
420 } else
421 wpa_s->sme.assoc_req_ie_len = 0;
422 wpabuf_free(wps_ie);
423 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
424 #endif /* CONFIG_WPS */
425 } else {
426 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
427 wpa_s->sme.assoc_req_ie_len = 0;
428 }
429
430 /* In case the WPA vendor IE is used, it should be placed after all the
431 * non-vendor IEs, as the lower layer expects the IEs to be ordered as
432 * defined in the standard. Store the WPA IE so it can later be
433 * inserted at the correct location.
434 */
435 wpa_ie = NULL;
436 wpa_ie_len = 0;
437 if (wpa_s->wpa_proto == WPA_PROTO_WPA) {
438 wpa_ie = os_memdup(wpa_s->sme.assoc_req_ie,
439 wpa_s->sme.assoc_req_ie_len);
440 if (wpa_ie) {
441 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Storing WPA IE");
442
443 wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
444 wpa_s->sme.assoc_req_ie_len = 0;
445 } else {
446 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed copy WPA IE");
447 wpas_connect_work_done(wpa_s);
448 return;
449 }
450 }
451
452 #ifdef CONFIG_IEEE80211R
453 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
454 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
455 md = ie + 2;
456 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
457 if (md && (!wpa_key_mgmt_ft(ssid->key_mgmt) ||
458 !wpa_key_mgmt_ft(wpa_s->key_mgmt)))
459 md = NULL;
460 if (md) {
461 /* Prepare for the next transition */
462 wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
463 }
464
465 if (md) {
466 wpa_dbg(wpa_s, MSG_DEBUG, "SME: FT mobility domain %02x%02x",
467 md[0], md[1]);
468
469 if (wpa_s->sme.assoc_req_ie_len + 5 <
470 sizeof(wpa_s->sme.assoc_req_ie)) {
471 struct rsn_mdie *mdie;
472 u8 *pos = wpa_s->sme.assoc_req_ie +
473 wpa_s->sme.assoc_req_ie_len;
474 *pos++ = WLAN_EID_MOBILITY_DOMAIN;
475 *pos++ = sizeof(*mdie);
476 mdie = (struct rsn_mdie *) pos;
477 os_memcpy(mdie->mobility_domain, md,
478 MOBILITY_DOMAIN_ID_LEN);
479 mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
480 wpa_s->sme.assoc_req_ie_len += 5;
481 }
482
483 if (wpa_s->sme.prev_bssid_set && wpa_s->sme.ft_used &&
484 os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
485 wpa_sm_has_ptk(wpa_s->wpa)) {
486 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT "
487 "over-the-air");
488 params.auth_alg = WPA_AUTH_ALG_FT;
489 params.ie = wpa_s->sme.ft_ies;
490 params.ie_len = wpa_s->sme.ft_ies_len;
491 }
492 }
493 #endif /* CONFIG_IEEE80211R */
494
495 #ifdef CONFIG_IEEE80211W
496 wpa_s->sme.mfp = wpas_get_ssid_pmf(wpa_s, ssid);
497 if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) {
498 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
499 struct wpa_ie_data _ie;
500 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
501 _ie.capabilities &
502 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
503 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports "
504 "MFP: require MFP");
505 wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
506 }
507 }
508 #endif /* CONFIG_IEEE80211W */
509
510 #ifdef CONFIG_P2P
511 if (wpa_s->global->p2p) {
512 u8 *pos;
513 size_t len;
514 int res;
515 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
516 len = sizeof(wpa_s->sme.assoc_req_ie) -
517 wpa_s->sme.assoc_req_ie_len;
518 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
519 ssid->p2p_group);
520 if (res >= 0)
521 wpa_s->sme.assoc_req_ie_len += res;
522 }
523 #endif /* CONFIG_P2P */
524
525 #ifdef CONFIG_FST
526 if (wpa_s->fst_ies) {
527 int fst_ies_len = wpabuf_len(wpa_s->fst_ies);
528
529 if (wpa_s->sme.assoc_req_ie_len + fst_ies_len <=
530 sizeof(wpa_s->sme.assoc_req_ie)) {
531 os_memcpy(wpa_s->sme.assoc_req_ie +
532 wpa_s->sme.assoc_req_ie_len,
533 wpabuf_head(wpa_s->fst_ies),
534 fst_ies_len);
535 wpa_s->sme.assoc_req_ie_len += fst_ies_len;
536 }
537 }
538 #endif /* CONFIG_FST */
539
540 sme_auth_handle_rrm(wpa_s, bss);
541
542 wpa_s->sme.assoc_req_ie_len += wpas_supp_op_class_ie(
543 wpa_s, ssid, bss->freq,
544 wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
545 sizeof(wpa_s->sme.assoc_req_ie) - wpa_s->sme.assoc_req_ie_len);
546
547 if (params.p2p)
548 wpa_drv_get_ext_capa(wpa_s, WPA_IF_P2P_CLIENT);
549 else
550 wpa_drv_get_ext_capa(wpa_s, WPA_IF_STATION);
551
552 ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab,
553 sizeof(ext_capab));
554 if (ext_capab_len > 0) {
555 u8 *pos = wpa_s->sme.assoc_req_ie;
556 if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
557 pos += 2 + pos[1];
558 os_memmove(pos + ext_capab_len, pos,
559 wpa_s->sme.assoc_req_ie_len -
560 (pos - wpa_s->sme.assoc_req_ie));
561 wpa_s->sme.assoc_req_ie_len += ext_capab_len;
562 os_memcpy(pos, ext_capab, ext_capab_len);
563 }
564
565 #ifdef CONFIG_HS20
566 if (is_hs20_network(wpa_s, ssid, bss)) {
567 struct wpabuf *hs20;
568
569 hs20 = wpabuf_alloc(20 + MAX_ROAMING_CONS_OI_LEN);
570 if (hs20) {
571 int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid);
572 size_t len;
573
574 wpas_hs20_add_indication(hs20, pps_mo_id,
575 get_hs20_version(bss));
576 wpas_hs20_add_roam_cons_sel(hs20, ssid);
577 len = sizeof(wpa_s->sme.assoc_req_ie) -
578 wpa_s->sme.assoc_req_ie_len;
579 if (wpabuf_len(hs20) <= len) {
580 os_memcpy(wpa_s->sme.assoc_req_ie +
581 wpa_s->sme.assoc_req_ie_len,
582 wpabuf_head(hs20), wpabuf_len(hs20));
583 wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
584 }
585 wpabuf_free(hs20);
586 }
587 }
588 #endif /* CONFIG_HS20 */
589
590 if (wpa_ie) {
591 size_t len;
592
593 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Reinsert WPA IE");
594
595 len = sizeof(wpa_s->sme.assoc_req_ie) -
596 wpa_s->sme.assoc_req_ie_len;
597
598 if (len > wpa_ie_len) {
599 os_memcpy(wpa_s->sme.assoc_req_ie +
600 wpa_s->sme.assoc_req_ie_len,
601 wpa_ie, wpa_ie_len);
602 wpa_s->sme.assoc_req_ie_len += wpa_ie_len;
603 } else {
604 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Failed to add WPA IE");
605 }
606
607 os_free(wpa_ie);
608 }
609
610 if (wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]) {
611 struct wpabuf *buf = wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ];
612 size_t len;
613
614 len = sizeof(wpa_s->sme.assoc_req_ie) -
615 wpa_s->sme.assoc_req_ie_len;
616 if (wpabuf_len(buf) <= len) {
617 os_memcpy(wpa_s->sme.assoc_req_ie +
618 wpa_s->sme.assoc_req_ie_len,
619 wpabuf_head(buf), wpabuf_len(buf));
620 wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf);
621 }
622 }
623
624 #ifdef CONFIG_MBO
625 mbo_ie = wpa_bss_get_vendor_ie(bss, MBO_IE_VENDOR_TYPE);
626 if (mbo_ie) {
627 int len;
628
629 len = wpas_mbo_ie(wpa_s, wpa_s->sme.assoc_req_ie +
630 wpa_s->sme.assoc_req_ie_len,
631 sizeof(wpa_s->sme.assoc_req_ie) -
632 wpa_s->sme.assoc_req_ie_len,
633 !!mbo_attr_from_mbo_ie(mbo_ie,
634 OCE_ATTR_ID_CAPA_IND));
635 if (len >= 0)
636 wpa_s->sme.assoc_req_ie_len += len;
637 }
638 #endif /* CONFIG_MBO */
639
640 #ifdef CONFIG_SAE
641 if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE &&
642 pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, ssid, 0,
643 NULL,
644 wpa_s->key_mgmt == WPA_KEY_MGMT_FT_SAE ?
645 WPA_KEY_MGMT_FT_SAE :
646 WPA_KEY_MGMT_SAE) == 0) {
647 wpa_dbg(wpa_s, MSG_DEBUG,
648 "PMKSA cache entry found - try to use PMKSA caching instead of new SAE authentication");
649 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa);
650 params.auth_alg = WPA_AUTH_ALG_OPEN;
651 wpa_s->sme.sae_pmksa_caching = 1;
652 }
653
654 if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE) {
655 if (start)
656 resp = sme_auth_build_sae_commit(wpa_s, ssid,
657 bss->bssid, 0,
658 start == 2);
659 else
660 resp = sme_auth_build_sae_confirm(wpa_s, 0);
661 if (resp == NULL) {
662 wpas_connection_failed(wpa_s, bss->bssid);
663 return;
664 }
665 params.auth_data = wpabuf_head(resp);
666 params.auth_data_len = wpabuf_len(resp);
667 wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED;
668 }
669 #endif /* CONFIG_SAE */
670
671 old_ssid = wpa_s->current_ssid;
672 wpa_s->current_ssid = ssid;
673 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
674 wpa_supplicant_initiate_eapol(wpa_s);
675
676 #ifdef CONFIG_FILS
677 /* TODO: FILS operations can in some cases be done between different
678 * network_ctx (i.e., same credentials can be used with multiple
679 * networks). */
680 if (params.auth_alg == WPA_AUTH_ALG_OPEN &&
681 wpa_key_mgmt_fils(ssid->key_mgmt)) {
682 const u8 *indic;
683 u16 fils_info;
684 const u8 *realm, *username, *rrk;
685 size_t realm_len, username_len, rrk_len;
686 u16 next_seq_num;
687
688 /*
689 * Check FILS Indication element (FILS Information field) bits
690 * indicating supported authentication algorithms against local
691 * configuration (ssid->fils_dh_group). Try to use FILS
692 * authentication only if the AP supports the combination in the
693 * network profile. */
694 indic = wpa_bss_get_ie(bss, WLAN_EID_FILS_INDICATION);
695 if (!indic || indic[1] < 2) {
696 wpa_printf(MSG_DEBUG, "SME: " MACSTR
697 " does not include FILS Indication element - cannot use FILS authentication with it",
698 MAC2STR(bss->bssid));
699 goto no_fils;
700 }
701
702 fils_info = WPA_GET_LE16(indic + 2);
703 if (ssid->fils_dh_group == 0 && !(fils_info & BIT(9))) {
704 wpa_printf(MSG_DEBUG, "SME: " MACSTR
705 " does not support FILS SK without PFS - cannot use FILS authentication with it",
706 MAC2STR(bss->bssid));
707 goto no_fils;
708 }
709 if (ssid->fils_dh_group != 0 && !(fils_info & BIT(10))) {
710 wpa_printf(MSG_DEBUG, "SME: " MACSTR
711 " does not support FILS SK with PFS - cannot use FILS authentication with it",
712 MAC2STR(bss->bssid));
713 goto no_fils;
714 }
715
716 if (wpa_s->last_con_fail_realm &&
717 eapol_sm_get_erp_info(wpa_s->eapol, &ssid->eap,
718 &username, &username_len,
719 &realm, &realm_len, &next_seq_num,
720 &rrk, &rrk_len) == 0 &&
721 realm && realm_len == wpa_s->last_con_fail_realm_len &&
722 os_memcmp(realm, wpa_s->last_con_fail_realm,
723 realm_len) == 0) {
724 wpa_printf(MSG_DEBUG,
725 "SME: FILS authentication for this realm failed last time - try to regenerate ERP key hierarchy");
726 goto no_fils;
727 }
728
729 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
730 ssid, 0,
731 wpa_bss_get_fils_cache_id(bss),
732 0) == 0)
733 wpa_printf(MSG_DEBUG,
734 "SME: Try to use FILS with PMKSA caching");
735 resp = fils_build_auth(wpa_s->wpa, ssid->fils_dh_group, md);
736 if (resp) {
737 int auth_alg;
738
739 if (ssid->fils_dh_group)
740 wpa_printf(MSG_DEBUG,
741 "SME: Try to use FILS SK authentication with PFS (DH Group %u)",
742 ssid->fils_dh_group);
743 else
744 wpa_printf(MSG_DEBUG,
745 "SME: Try to use FILS SK authentication without PFS");
746 auth_alg = ssid->fils_dh_group ?
747 WPA_AUTH_ALG_FILS_SK_PFS : WPA_AUTH_ALG_FILS;
748 params.auth_alg = auth_alg;
749 params.auth_data = wpabuf_head(resp);
750 params.auth_data_len = wpabuf_len(resp);
751 wpa_s->sme.auth_alg = auth_alg;
752 }
753 }
754 no_fils:
755 #endif /* CONFIG_FILS */
756
757 wpa_supplicant_cancel_sched_scan(wpa_s);
758 wpa_supplicant_cancel_scan(wpa_s);
759
760 wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
761 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
762 wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
763
764 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
765 wpa_clear_keys(wpa_s, bss->bssid);
766 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
767 if (old_ssid != wpa_s->current_ssid)
768 wpas_notify_network_changed(wpa_s);
769
770 #ifdef CONFIG_HS20
771 hs20_configure_frame_filters(wpa_s);
772 #endif /* CONFIG_HS20 */
773
774 #ifdef CONFIG_P2P
775 /*
776 * If multi-channel concurrency is not supported, check for any
777 * frequency conflict. In case of any frequency conflict, remove the
778 * least prioritized connection.
779 */
780 if (wpa_s->num_multichan_concurrent < 2) {
781 int freq, num;
782 num = get_shared_radio_freqs(wpa_s, &freq, 1);
783 if (num > 0 && freq > 0 && freq != params.freq) {
784 wpa_printf(MSG_DEBUG,
785 "Conflicting frequency found (%d != %d)",
786 freq, params.freq);
787 if (wpas_p2p_handle_frequency_conflicts(wpa_s,
788 params.freq,
789 ssid) < 0) {
790 wpas_connection_failed(wpa_s, bss->bssid);
791 wpa_supplicant_mark_disassoc(wpa_s);
792 wpabuf_free(resp);
793 wpas_connect_work_done(wpa_s);
794 return;
795 }
796 }
797 }
798 #endif /* CONFIG_P2P */
799
800 if (skip_auth) {
801 wpa_msg(wpa_s, MSG_DEBUG,
802 "SME: Skip authentication step on reassoc-to-same-BSS");
803 wpabuf_free(resp);
804 sme_associate(wpa_s, ssid->mode, bss->bssid, WLAN_AUTH_OPEN);
805 return;
806 }
807
808
809 wpa_s->sme.auth_alg = params.auth_alg;
810 if (wpa_drv_authenticate(wpa_s, &params) < 0) {
811 wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
812 "driver failed");
813 wpas_connection_failed(wpa_s, bss->bssid);
814 wpa_supplicant_mark_disassoc(wpa_s);
815 wpabuf_free(resp);
816 wpas_connect_work_done(wpa_s);
817 return;
818 }
819
820 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
821 NULL);
822
823 /*
824 * Association will be started based on the authentication event from
825 * the driver.
826 */
827
828 wpabuf_free(resp);
829 }
830
831
832 static void sme_auth_start_cb(struct wpa_radio_work *work, int deinit)
833 {
834 struct wpa_connect_work *cwork = work->ctx;
835 struct wpa_supplicant *wpa_s = work->wpa_s;
836
837 if (deinit) {
838 if (work->started)
839 wpa_s->connect_work = NULL;
840
841 wpas_connect_work_free(cwork);
842 return;
843 }
844
845 wpa_s->connect_work = work;
846
847 if (cwork->bss_removed ||
848 !wpas_valid_bss_ssid(wpa_s, cwork->bss, cwork->ssid) ||
849 wpas_network_disabled(wpa_s, cwork->ssid)) {
850 wpa_dbg(wpa_s, MSG_DEBUG, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt");
851 wpas_connect_work_done(wpa_s);
852 return;
853 }
854
855 /* Starting new connection, so clear the possibly used WPA IE from the
856 * previous association. */
857 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
858
859 sme_send_authentication(wpa_s, cwork->bss, cwork->ssid, 1);
860 }
861
862
863 void sme_authenticate(struct wpa_supplicant *wpa_s,
864 struct wpa_bss *bss, struct wpa_ssid *ssid)
865 {
866 struct wpa_connect_work *cwork;
867
868 if (bss == NULL || ssid == NULL)
869 return;
870 if (wpa_s->connect_work) {
871 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reject sme_authenticate() call since connect_work exist");
872 return;
873 }
874
875 if (radio_work_pending(wpa_s, "sme-connect")) {
876 /*
877 * The previous sme-connect work might no longer be valid due to
878 * the fact that the BSS list was updated. In addition, it makes
879 * sense to adhere to the 'newer' decision.
880 */
881 wpa_dbg(wpa_s, MSG_DEBUG,
882 "SME: Remove previous pending sme-connect");
883 radio_remove_works(wpa_s, "sme-connect", 0);
884 }
885
886 wpas_abort_ongoing_scan(wpa_s);
887
888 cwork = os_zalloc(sizeof(*cwork));
889 if (cwork == NULL)
890 return;
891 cwork->bss = bss;
892 cwork->ssid = ssid;
893 cwork->sme = 1;
894
895 #ifdef CONFIG_SAE
896 wpa_s->sme.sae.state = SAE_NOTHING;
897 wpa_s->sme.sae.send_confirm = 0;
898 wpa_s->sme.sae_group_index = 0;
899 #endif /* CONFIG_SAE */
900
901 if (radio_add_work(wpa_s, bss->freq, "sme-connect", 1,
902 sme_auth_start_cb, cwork) < 0)
903 wpas_connect_work_free(cwork);
904 }
905
906
907 #ifdef CONFIG_SAE
908
909 static int sme_external_auth_build_buf(struct wpabuf *buf,
910 struct wpabuf *params,
911 const u8 *sa, const u8 *da,
912 u16 auth_transaction, u16 seq_num)
913 {
914 struct ieee80211_mgmt *resp;
915
916 resp = wpabuf_put(buf, offsetof(struct ieee80211_mgmt,
917 u.auth.variable));
918
919 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
920 (WLAN_FC_STYPE_AUTH << 4));
921 os_memcpy(resp->da, da, ETH_ALEN);
922 os_memcpy(resp->sa, sa, ETH_ALEN);
923 os_memcpy(resp->bssid, da, ETH_ALEN);
924 resp->u.auth.auth_alg = host_to_le16(WLAN_AUTH_SAE);
925 resp->seq_ctrl = host_to_le16(seq_num << 4);
926 resp->u.auth.auth_transaction = host_to_le16(auth_transaction);
927 resp->u.auth.status_code = host_to_le16(WLAN_STATUS_SUCCESS);
928 if (params)
929 wpabuf_put_buf(buf, params);
930
931 return 0;
932 }
933
934
935 static int sme_external_auth_send_sae_commit(struct wpa_supplicant *wpa_s,
936 const u8 *bssid,
937 struct wpa_ssid *ssid)
938 {
939 struct wpabuf *resp, *buf;
940
941 resp = sme_auth_build_sae_commit(wpa_s, ssid, bssid, 1, 0);
942 if (!resp) {
943 wpa_printf(MSG_DEBUG, "SAE: Failed to build SAE commit");
944 return -1;
945 }
946
947 wpa_s->sme.sae.state = SAE_COMMITTED;
948 buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + wpabuf_len(resp));
949 if (!buf) {
950 wpabuf_free(resp);
951 return -1;
952 }
953
954 wpa_s->sme.seq_num++;
955 sme_external_auth_build_buf(buf, resp, wpa_s->own_addr,
956 bssid, 1, wpa_s->sme.seq_num);
957 wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 0);
958 wpabuf_free(resp);
959 wpabuf_free(buf);
960
961 return 0;
962 }
963
964
965 static void sme_send_external_auth_status(struct wpa_supplicant *wpa_s,
966 u16 status)
967 {
968 struct external_auth params;
969
970 os_memset(&params, 0, sizeof(params));
971 params.status = status;
972 params.ssid = wpa_s->sme.ext_auth_ssid;
973 params.ssid_len = wpa_s->sme.ext_auth_ssid_len;
974 params.bssid = wpa_s->sme.ext_auth_bssid;
975 wpa_drv_send_external_auth_status(wpa_s, &params);
976 }
977
978
979 static int sme_handle_external_auth_start(struct wpa_supplicant *wpa_s,
980 union wpa_event_data *data)
981 {
982 struct wpa_ssid *ssid;
983 size_t ssid_str_len = data->external_auth.ssid_len;
984 const u8 *ssid_str = data->external_auth.ssid;
985
986 /* Get the SSID conf from the ssid string obtained */
987 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
988 if (!wpas_network_disabled(wpa_s, ssid) &&
989 ssid_str_len == ssid->ssid_len &&
990 os_memcmp(ssid_str, ssid->ssid, ssid_str_len) == 0 &&
991 (ssid->key_mgmt & (WPA_KEY_MGMT_SAE | WPA_KEY_MGMT_FT_SAE)))
992 break;
993 }
994 if (!ssid ||
995 sme_external_auth_send_sae_commit(wpa_s, data->external_auth.bssid,
996 ssid) < 0)
997 return -1;
998
999 return 0;
1000 }
1001
1002
1003 static void sme_external_auth_send_sae_confirm(struct wpa_supplicant *wpa_s,
1004 const u8 *da)
1005 {
1006 struct wpabuf *resp, *buf;
1007
1008 resp = sme_auth_build_sae_confirm(wpa_s, 1);
1009 if (!resp) {
1010 wpa_printf(MSG_DEBUG, "SAE: Confirm message buf alloc failure");
1011 return;
1012 }
1013
1014 wpa_s->sme.sae.state = SAE_CONFIRMED;
1015 buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN + wpabuf_len(resp));
1016 if (!buf) {
1017 wpa_printf(MSG_DEBUG, "SAE: Auth Confirm buf alloc failure");
1018 wpabuf_free(resp);
1019 return;
1020 }
1021 wpa_s->sme.seq_num++;
1022 sme_external_auth_build_buf(buf, resp, wpa_s->own_addr,
1023 da, 2, wpa_s->sme.seq_num);
1024 wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 0);
1025 wpabuf_free(resp);
1026 wpabuf_free(buf);
1027 }
1028
1029
1030 void sme_external_auth_trigger(struct wpa_supplicant *wpa_s,
1031 union wpa_event_data *data)
1032 {
1033 if (RSN_SELECTOR_GET(&data->external_auth.key_mgmt_suite) !=
1034 RSN_AUTH_KEY_MGMT_SAE)
1035 return;
1036
1037 if (data->external_auth.action == EXT_AUTH_START) {
1038 if (!data->external_auth.bssid || !data->external_auth.ssid)
1039 return;
1040 os_memcpy(wpa_s->sme.ext_auth_bssid, data->external_auth.bssid,
1041 ETH_ALEN);
1042 os_memcpy(wpa_s->sme.ext_auth_ssid, data->external_auth.ssid,
1043 data->external_auth.ssid_len);
1044 wpa_s->sme.ext_auth_ssid_len = data->external_auth.ssid_len;
1045 wpa_s->sme.seq_num = 0;
1046 wpa_s->sme.sae.state = SAE_NOTHING;
1047 wpa_s->sme.sae.send_confirm = 0;
1048 wpa_s->sme.sae_group_index = 0;
1049 if (sme_handle_external_auth_start(wpa_s, data) < 0)
1050 sme_send_external_auth_status(wpa_s,
1051 WLAN_STATUS_UNSPECIFIED_FAILURE);
1052 } else if (data->external_auth.action == EXT_AUTH_ABORT) {
1053 /* Report failure to driver for the wrong trigger */
1054 sme_send_external_auth_status(wpa_s,
1055 WLAN_STATUS_UNSPECIFIED_FAILURE);
1056 }
1057 }
1058
1059
1060 static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
1061 u16 status_code, const u8 *data, size_t len,
1062 int external, const u8 *sa)
1063 {
1064 int *groups;
1065
1066 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
1067 "status code %u", auth_transaction, status_code);
1068
1069 if (auth_transaction == 1 &&
1070 status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
1071 wpa_s->sme.sae.state == SAE_COMMITTED &&
1072 (external || wpa_s->current_bss) && wpa_s->current_ssid) {
1073 int default_groups[] = { 19, 20, 21, 0 };
1074 u16 group;
1075
1076 groups = wpa_s->conf->sae_groups;
1077 if (!groups || groups[0] <= 0)
1078 groups = default_groups;
1079
1080 if (len < sizeof(le16)) {
1081 wpa_dbg(wpa_s, MSG_DEBUG,
1082 "SME: Too short SAE anti-clogging token request");
1083 return -1;
1084 }
1085 group = WPA_GET_LE16(data);
1086 wpa_dbg(wpa_s, MSG_DEBUG,
1087 "SME: SAE anti-clogging token requested (group %u)",
1088 group);
1089 if (sae_group_allowed(&wpa_s->sme.sae, groups, group) !=
1090 WLAN_STATUS_SUCCESS) {
1091 wpa_dbg(wpa_s, MSG_ERROR,
1092 "SME: SAE group %u of anti-clogging request is invalid",
1093 group);
1094 return -1;
1095 }
1096 wpabuf_free(wpa_s->sme.sae_token);
1097 wpa_s->sme.sae_token = wpabuf_alloc_copy(data + sizeof(le16),
1098 len - sizeof(le16));
1099 if (!external)
1100 sme_send_authentication(wpa_s, wpa_s->current_bss,
1101 wpa_s->current_ssid, 2);
1102 else
1103 sme_external_auth_send_sae_commit(
1104 wpa_s, wpa_s->sme.ext_auth_bssid,
1105 wpa_s->current_ssid);
1106 return 0;
1107 }
1108
1109 if (auth_transaction == 1 &&
1110 status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
1111 wpa_s->sme.sae.state == SAE_COMMITTED &&
1112 (external || wpa_s->current_bss) && wpa_s->current_ssid) {
1113 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
1114 wpa_s->sme.sae_group_index++;
1115 if (sme_set_sae_group(wpa_s) < 0)
1116 return -1; /* no other groups enabled */
1117 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
1118 if (!external)
1119 sme_send_authentication(wpa_s, wpa_s->current_bss,
1120 wpa_s->current_ssid, 1);
1121 else
1122 sme_external_auth_send_sae_commit(
1123 wpa_s, wpa_s->sme.ext_auth_bssid,
1124 wpa_s->current_ssid);
1125 return 0;
1126 }
1127
1128 if (auth_transaction == 1 &&
1129 status_code == WLAN_STATUS_UNKNOWN_PASSWORD_IDENTIFIER) {
1130 const u8 *bssid = sa ? sa : wpa_s->pending_bssid;
1131
1132 wpa_msg(wpa_s, MSG_INFO,
1133 WPA_EVENT_SAE_UNKNOWN_PASSWORD_IDENTIFIER MACSTR,
1134 MAC2STR(bssid));
1135 return -1;
1136 }
1137
1138 if (status_code != WLAN_STATUS_SUCCESS)
1139 return -1;
1140
1141 if (auth_transaction == 1) {
1142 u16 res;
1143
1144 groups = wpa_s->conf->sae_groups;
1145
1146 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
1147 if ((!external && wpa_s->current_bss == NULL) ||
1148 wpa_s->current_ssid == NULL)
1149 return -1;
1150 if (wpa_s->sme.sae.state != SAE_COMMITTED)
1151 return -1;
1152 if (groups && groups[0] <= 0)
1153 groups = NULL;
1154 res = sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
1155 groups);
1156 if (res == SAE_SILENTLY_DISCARD) {
1157 wpa_printf(MSG_DEBUG,
1158 "SAE: Drop commit message due to reflection attack");
1159 return 0;
1160 }
1161 if (res != WLAN_STATUS_SUCCESS)
1162 return -1;
1163
1164 if (sae_process_commit(&wpa_s->sme.sae) < 0) {
1165 wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
1166 "commit");
1167 return -1;
1168 }
1169
1170 wpabuf_free(wpa_s->sme.sae_token);
1171 wpa_s->sme.sae_token = NULL;
1172 if (!external)
1173 sme_send_authentication(wpa_s, wpa_s->current_bss,
1174 wpa_s->current_ssid, 0);
1175 else
1176 sme_external_auth_send_sae_confirm(wpa_s, sa);
1177 return 0;
1178 } else if (auth_transaction == 2) {
1179 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
1180 if (wpa_s->sme.sae.state != SAE_CONFIRMED)
1181 return -1;
1182 if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
1183 return -1;
1184 wpa_s->sme.sae.state = SAE_ACCEPTED;
1185 sae_clear_temp_data(&wpa_s->sme.sae);
1186
1187 if (external) {
1188 /* Report success to driver */
1189 sme_send_external_auth_status(wpa_s,
1190 WLAN_STATUS_SUCCESS);
1191 }
1192
1193 return 1;
1194 }
1195
1196 return -1;
1197 }
1198
1199
1200 static int sme_sae_set_pmk(struct wpa_supplicant *wpa_s)
1201 {
1202 wpa_printf(MSG_DEBUG,
1203 "SME: SAE completed - setting PMK for 4-way handshake");
1204 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN,
1205 wpa_s->sme.sae.pmkid, wpa_s->pending_bssid);
1206 if (wpa_s->conf->sae_pmkid_in_assoc) {
1207 /* Update the own RSNE contents now that we have set the PMK
1208 * and added a PMKSA cache entry based on the successfully
1209 * completed SAE exchange. In practice, this will add the PMKID
1210 * into RSNE. */
1211 if (wpa_s->sme.assoc_req_ie_len + 2 + PMKID_LEN >
1212 sizeof(wpa_s->sme.assoc_req_ie)) {
1213 wpa_msg(wpa_s, MSG_WARNING,
1214 "RSN: Not enough room for inserting own PMKID into RSNE");
1215 return -1;
1216 }
1217 if (wpa_insert_pmkid(wpa_s->sme.assoc_req_ie,
1218 &wpa_s->sme.assoc_req_ie_len,
1219 wpa_s->sme.sae.pmkid) < 0)
1220 return -1;
1221 wpa_hexdump(MSG_DEBUG,
1222 "SME: Updated Association Request IEs",
1223 wpa_s->sme.assoc_req_ie,
1224 wpa_s->sme.assoc_req_ie_len);
1225 }
1226
1227 return 0;
1228 }
1229
1230
1231 void sme_external_auth_mgmt_rx(struct wpa_supplicant *wpa_s,
1232 const u8 *auth_frame, size_t len)
1233 {
1234 const struct ieee80211_mgmt *header;
1235 size_t auth_length;
1236
1237 header = (const struct ieee80211_mgmt *) auth_frame;
1238 auth_length = IEEE80211_HDRLEN + sizeof(header->u.auth);
1239
1240 if (len < auth_length) {
1241 /* Notify failure to the driver */
1242 sme_send_external_auth_status(wpa_s,
1243 WLAN_STATUS_UNSPECIFIED_FAILURE);
1244 return;
1245 }
1246
1247 if (le_to_host16(header->u.auth.auth_alg) == WLAN_AUTH_SAE) {
1248 int res;
1249
1250 res = sme_sae_auth(
1251 wpa_s, le_to_host16(header->u.auth.auth_transaction),
1252 le_to_host16(header->u.auth.status_code),
1253 header->u.auth.variable,
1254 len - auth_length, 1, header->sa);
1255 if (res < 0) {
1256 /* Notify failure to the driver */
1257 sme_send_external_auth_status(
1258 wpa_s, WLAN_STATUS_UNSPECIFIED_FAILURE);
1259 return;
1260 }
1261 if (res != 1)
1262 return;
1263
1264 if (sme_sae_set_pmk(wpa_s) < 0)
1265 return;
1266 }
1267 }
1268
1269 #endif /* CONFIG_SAE */
1270
1271
1272 void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
1273 {
1274 struct wpa_ssid *ssid = wpa_s->current_ssid;
1275
1276 if (ssid == NULL) {
1277 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
1278 "when network is not selected");
1279 return;
1280 }
1281
1282 if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
1283 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
1284 "when not in authenticating state");
1285 return;
1286 }
1287
1288 if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
1289 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
1290 "unexpected peer " MACSTR,
1291 MAC2STR(data->auth.peer));
1292 return;
1293 }
1294
1295 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
1296 " auth_type=%d auth_transaction=%d status_code=%d",
1297 MAC2STR(data->auth.peer), data->auth.auth_type,
1298 data->auth.auth_transaction, data->auth.status_code);
1299 wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
1300 data->auth.ies, data->auth.ies_len);
1301
1302 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1303
1304 #ifdef CONFIG_SAE
1305 if (data->auth.auth_type == WLAN_AUTH_SAE) {
1306 int res;
1307 res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
1308 data->auth.status_code, data->auth.ies,
1309 data->auth.ies_len, 0, NULL);
1310 if (res < 0) {
1311 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1312 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1313
1314 }
1315 if (res != 1)
1316 return;
1317
1318 if (sme_sae_set_pmk(wpa_s) < 0)
1319 return;
1320 }
1321 #endif /* CONFIG_SAE */
1322
1323 if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
1324 char *ie_txt = NULL;
1325
1326 if (data->auth.ies && data->auth.ies_len) {
1327 size_t buflen = 2 * data->auth.ies_len + 1;
1328 ie_txt = os_malloc(buflen);
1329 if (ie_txt) {
1330 wpa_snprintf_hex(ie_txt, buflen, data->auth.ies,
1331 data->auth.ies_len);
1332 }
1333 }
1334 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AUTH_REJECT MACSTR
1335 " auth_type=%u auth_transaction=%u status_code=%u%s%s",
1336 MAC2STR(data->auth.peer), data->auth.auth_type,
1337 data->auth.auth_transaction, data->auth.status_code,
1338 ie_txt ? " ie=" : "",
1339 ie_txt ? ie_txt : "");
1340 os_free(ie_txt);
1341
1342 #ifdef CONFIG_FILS
1343 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FILS ||
1344 wpa_s->sme.auth_alg == WPA_AUTH_ALG_FILS_SK_PFS)
1345 fils_connection_failure(wpa_s);
1346 #endif /* CONFIG_FILS */
1347
1348 if (data->auth.status_code !=
1349 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
1350 wpa_s->sme.auth_alg == data->auth.auth_type ||
1351 wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
1352 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1353 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1354 return;
1355 }
1356
1357 wpas_connect_work_done(wpa_s);
1358
1359 switch (data->auth.auth_type) {
1360 case WLAN_AUTH_OPEN:
1361 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
1362
1363 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
1364 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
1365 wpa_s->current_ssid);
1366 return;
1367
1368 case WLAN_AUTH_SHARED_KEY:
1369 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
1370
1371 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
1372 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
1373 wpa_s->current_ssid);
1374 return;
1375
1376 default:
1377 return;
1378 }
1379 }
1380
1381 #ifdef CONFIG_IEEE80211R
1382 if (data->auth.auth_type == WLAN_AUTH_FT) {
1383 const u8 *ric_ies = NULL;
1384 size_t ric_ies_len = 0;
1385
1386 if (wpa_s->ric_ies) {
1387 ric_ies = wpabuf_head(wpa_s->ric_ies);
1388 ric_ies_len = wpabuf_len(wpa_s->ric_ies);
1389 }
1390 if (wpa_ft_process_response(wpa_s->wpa, data->auth.ies,
1391 data->auth.ies_len, 0,
1392 data->auth.peer,
1393 ric_ies, ric_ies_len) < 0) {
1394 wpa_dbg(wpa_s, MSG_DEBUG,
1395 "SME: FT Authentication response processing failed");
1396 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
1397 MACSTR
1398 " reason=%d locally_generated=1",
1399 MAC2STR(wpa_s->pending_bssid),
1400 WLAN_REASON_DEAUTH_LEAVING);
1401 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1402 wpa_supplicant_mark_disassoc(wpa_s);
1403 return;
1404 }
1405 }
1406 #endif /* CONFIG_IEEE80211R */
1407
1408 #ifdef CONFIG_FILS
1409 if (data->auth.auth_type == WLAN_AUTH_FILS_SK ||
1410 data->auth.auth_type == WLAN_AUTH_FILS_SK_PFS) {
1411 u16 expect_auth_type;
1412
1413 expect_auth_type = wpa_s->sme.auth_alg ==
1414 WPA_AUTH_ALG_FILS_SK_PFS ? WLAN_AUTH_FILS_SK_PFS :
1415 WLAN_AUTH_FILS_SK;
1416 if (data->auth.auth_type != expect_auth_type) {
1417 wpa_dbg(wpa_s, MSG_DEBUG,
1418 "SME: FILS Authentication response used different auth alg (%u; expected %u)",
1419 data->auth.auth_type, expect_auth_type);
1420 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
1421 MACSTR
1422 " reason=%d locally_generated=1",
1423 MAC2STR(wpa_s->pending_bssid),
1424 WLAN_REASON_DEAUTH_LEAVING);
1425 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1426 wpa_supplicant_mark_disassoc(wpa_s);
1427 return;
1428 }
1429
1430 if (fils_process_auth(wpa_s->wpa, wpa_s->pending_bssid,
1431 data->auth.ies, data->auth.ies_len) < 0) {
1432 wpa_dbg(wpa_s, MSG_DEBUG,
1433 "SME: FILS Authentication response processing failed");
1434 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
1435 MACSTR
1436 " reason=%d locally_generated=1",
1437 MAC2STR(wpa_s->pending_bssid),
1438 WLAN_REASON_DEAUTH_LEAVING);
1439 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1440 wpa_supplicant_mark_disassoc(wpa_s);
1441 return;
1442 }
1443 }
1444 #endif /* CONFIG_FILS */
1445
1446 sme_associate(wpa_s, ssid->mode, data->auth.peer,
1447 data->auth.auth_type);
1448 }
1449
1450
1451 #ifdef CONFIG_IEEE80211R
1452 static void remove_ie(u8 *buf, size_t *len, u8 eid)
1453 {
1454 u8 *pos, *next, *end;
1455
1456 pos = (u8 *) get_ie(buf, *len, eid);
1457 if (pos) {
1458 next = pos + 2 + pos[1];
1459 end = buf + *len;
1460 *len -= 2 + pos[1];
1461 os_memmove(pos, next, end - next);
1462 }
1463 }
1464 #endif /* CONFIG_IEEE80211R */
1465
1466
1467 void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
1468 const u8 *bssid, u16 auth_type)
1469 {
1470 struct wpa_driver_associate_params params;
1471 struct ieee802_11_elems elems;
1472 #ifdef CONFIG_FILS
1473 u8 nonces[2 * FILS_NONCE_LEN];
1474 #endif /* CONFIG_FILS */
1475 #ifdef CONFIG_HT_OVERRIDES
1476 struct ieee80211_ht_capabilities htcaps;
1477 struct ieee80211_ht_capabilities htcaps_mask;
1478 #endif /* CONFIG_HT_OVERRIDES */
1479 #ifdef CONFIG_VHT_OVERRIDES
1480 struct ieee80211_vht_capabilities vhtcaps;
1481 struct ieee80211_vht_capabilities vhtcaps_mask;
1482 #endif /* CONFIG_VHT_OVERRIDES */
1483
1484 os_memset(&params, 0, sizeof(params));
1485
1486 #ifdef CONFIG_FILS
1487 if (auth_type == WLAN_AUTH_FILS_SK ||
1488 auth_type == WLAN_AUTH_FILS_SK_PFS) {
1489 struct wpabuf *buf;
1490 const u8 *snonce, *anonce;
1491 const unsigned int max_hlp = 20;
1492 struct wpabuf *hlp[max_hlp];
1493 unsigned int i, num_hlp = 0;
1494 struct fils_hlp_req *req;
1495
1496 dl_list_for_each(req, &wpa_s->fils_hlp_req, struct fils_hlp_req,
1497 list) {
1498 hlp[num_hlp] = wpabuf_alloc(2 * ETH_ALEN + 6 +
1499 wpabuf_len(req->pkt));
1500 if (!hlp[num_hlp])
1501 break;
1502 wpabuf_put_data(hlp[num_hlp], req->dst, ETH_ALEN);
1503 wpabuf_put_data(hlp[num_hlp], wpa_s->own_addr,
1504 ETH_ALEN);
1505 wpabuf_put_data(hlp[num_hlp],
1506 "\xaa\xaa\x03\x00\x00\x00", 6);
1507 wpabuf_put_buf(hlp[num_hlp], req->pkt);
1508 num_hlp++;
1509 if (num_hlp >= max_hlp)
1510 break;
1511 }
1512
1513 buf = fils_build_assoc_req(wpa_s->wpa, &params.fils_kek,
1514 &params.fils_kek_len, &snonce,
1515 &anonce,
1516 (const struct wpabuf **) hlp,
1517 num_hlp);
1518 for (i = 0; i < num_hlp; i++)
1519 wpabuf_free(hlp[i]);
1520 if (!buf)
1521 return;
1522 wpa_hexdump(MSG_DEBUG, "FILS: assoc_req before FILS elements",
1523 wpa_s->sme.assoc_req_ie,
1524 wpa_s->sme.assoc_req_ie_len);
1525 #ifdef CONFIG_IEEE80211R
1526 if (wpa_key_mgmt_ft(wpa_s->key_mgmt)) {
1527 /* Remove RSNE and MDE to allow them to be overridden
1528 * with FILS+FT specific values from
1529 * fils_build_assoc_req(). */
1530 remove_ie(wpa_s->sme.assoc_req_ie,
1531 &wpa_s->sme.assoc_req_ie_len,
1532 WLAN_EID_RSN);
1533 wpa_hexdump(MSG_DEBUG,
1534 "FILS: assoc_req after RSNE removal",
1535 wpa_s->sme.assoc_req_ie,
1536 wpa_s->sme.assoc_req_ie_len);
1537 remove_ie(wpa_s->sme.assoc_req_ie,
1538 &wpa_s->sme.assoc_req_ie_len,
1539 WLAN_EID_MOBILITY_DOMAIN);
1540 wpa_hexdump(MSG_DEBUG,
1541 "FILS: assoc_req after MDE removal",
1542 wpa_s->sme.assoc_req_ie,
1543 wpa_s->sme.assoc_req_ie_len);
1544 }
1545 #endif /* CONFIG_IEEE80211R */
1546 /* TODO: Make wpa_s->sme.assoc_req_ie use dynamic allocation */
1547 if (wpa_s->sme.assoc_req_ie_len + wpabuf_len(buf) >
1548 sizeof(wpa_s->sme.assoc_req_ie)) {
1549 wpa_printf(MSG_ERROR,
1550 "FILS: Not enough buffer room for own AssocReq elements");
1551 wpabuf_free(buf);
1552 return;
1553 }
1554 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1555 wpabuf_head(buf), wpabuf_len(buf));
1556 wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf);
1557 wpabuf_free(buf);
1558 wpa_hexdump(MSG_DEBUG, "FILS: assoc_req after FILS elements",
1559 wpa_s->sme.assoc_req_ie,
1560 wpa_s->sme.assoc_req_ie_len);
1561
1562 os_memcpy(nonces, snonce, FILS_NONCE_LEN);
1563 os_memcpy(nonces + FILS_NONCE_LEN, anonce, FILS_NONCE_LEN);
1564 params.fils_nonces = nonces;
1565 params.fils_nonces_len = sizeof(nonces);
1566 }
1567 #endif /* CONFIG_FILS */
1568
1569 #ifdef CONFIG_OWE
1570 #ifdef CONFIG_TESTING_OPTIONS
1571 if (get_ie_ext(wpa_s->sme.assoc_req_ie, wpa_s->sme.assoc_req_ie_len,
1572 WLAN_EID_EXT_OWE_DH_PARAM)) {
1573 wpa_printf(MSG_INFO, "TESTING: Override OWE DH element");
1574 } else
1575 #endif /* CONFIG_TESTING_OPTIONS */
1576 if (auth_type == WLAN_AUTH_OPEN &&
1577 wpa_s->key_mgmt == WPA_KEY_MGMT_OWE) {
1578 struct wpabuf *owe_ie;
1579 u16 group;
1580
1581 if (wpa_s->current_ssid && wpa_s->current_ssid->owe_group) {
1582 group = wpa_s->current_ssid->owe_group;
1583 } else if (wpa_s->assoc_status_code ==
1584 WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED) {
1585 if (wpa_s->last_owe_group == 19)
1586 group = 20;
1587 else if (wpa_s->last_owe_group == 20)
1588 group = 21;
1589 else
1590 group = OWE_DH_GROUP;
1591 } else {
1592 group = OWE_DH_GROUP;
1593 }
1594
1595 wpa_s->last_owe_group = group;
1596 wpa_printf(MSG_DEBUG, "OWE: Try to use group %u", group);
1597 owe_ie = owe_build_assoc_req(wpa_s->wpa, group);
1598 if (!owe_ie) {
1599 wpa_printf(MSG_ERROR,
1600 "OWE: Failed to build IE for Association Request frame");
1601 return;
1602 }
1603 if (wpa_s->sme.assoc_req_ie_len + wpabuf_len(owe_ie) >
1604 sizeof(wpa_s->sme.assoc_req_ie)) {
1605 wpa_printf(MSG_ERROR,
1606 "OWE: Not enough buffer room for own Association Request frame elements");
1607 wpabuf_free(owe_ie);
1608 return;
1609 }
1610 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1611 wpabuf_head(owe_ie), wpabuf_len(owe_ie));
1612 wpa_s->sme.assoc_req_ie_len += wpabuf_len(owe_ie);
1613 wpabuf_free(owe_ie);
1614 }
1615 #endif /* CONFIG_OWE */
1616
1617 #ifdef CONFIG_DPP2
1618 if (wpa_s->key_mgmt == WPA_KEY_MGMT_DPP && wpa_s->current_ssid &&
1619 wpa_s->current_ssid->dpp_netaccesskey) {
1620 struct wpa_ssid *ssid = wpa_s->current_ssid;
1621
1622 dpp_pfs_free(wpa_s->dpp_pfs);
1623 wpa_s->dpp_pfs = dpp_pfs_init(ssid->dpp_netaccesskey,
1624 ssid->dpp_netaccesskey_len);
1625 if (!wpa_s->dpp_pfs) {
1626 wpa_printf(MSG_DEBUG, "DPP: Could not initialize PFS");
1627 /* Try to continue without PFS */
1628 goto pfs_fail;
1629 }
1630 if (wpa_s->sme.assoc_req_ie_len +
1631 wpabuf_len(wpa_s->dpp_pfs->ie) >
1632 sizeof(wpa_s->sme.assoc_req_ie)) {
1633 wpa_printf(MSG_ERROR,
1634 "DPP: Not enough buffer room for own Association Request frame elements");
1635 dpp_pfs_free(wpa_s->dpp_pfs);
1636 wpa_s->dpp_pfs = NULL;
1637 goto pfs_fail;
1638 }
1639 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1640 wpabuf_head(wpa_s->dpp_pfs->ie),
1641 wpabuf_len(wpa_s->dpp_pfs->ie));
1642 wpa_s->sme.assoc_req_ie_len += wpabuf_len(wpa_s->dpp_pfs->ie);
1643 }
1644 pfs_fail:
1645 #endif /* CONFIG_DPP2 */
1646
1647 if (wpa_s->current_ssid && wpa_s->current_ssid->multi_ap_backhaul_sta) {
1648 size_t multi_ap_ie_len;
1649
1650 multi_ap_ie_len = add_multi_ap_ie(
1651 wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1652 sizeof(wpa_s->sme.assoc_req_ie) -
1653 wpa_s->sme.assoc_req_ie_len,
1654 MULTI_AP_BACKHAUL_STA);
1655 if (multi_ap_ie_len == 0) {
1656 wpa_printf(MSG_ERROR,
1657 "Multi-AP: Failed to build Multi-AP IE");
1658 return;
1659 }
1660 wpa_s->sme.assoc_req_ie_len += multi_ap_ie_len;
1661 }
1662
1663 params.bssid = bssid;
1664 params.ssid = wpa_s->sme.ssid;
1665 params.ssid_len = wpa_s->sme.ssid_len;
1666 params.freq.freq = wpa_s->sme.freq;
1667 params.bg_scan_period = wpa_s->current_ssid ?
1668 wpa_s->current_ssid->bg_scan_period : -1;
1669 params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
1670 wpa_s->sme.assoc_req_ie : NULL;
1671 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
1672 wpa_hexdump(MSG_DEBUG, "SME: Association Request IEs",
1673 params.wpa_ie, params.wpa_ie_len);
1674 params.pairwise_suite = wpa_s->pairwise_cipher;
1675 params.group_suite = wpa_s->group_cipher;
1676 params.mgmt_group_suite = wpa_s->mgmt_group_cipher;
1677 params.key_mgmt_suite = wpa_s->key_mgmt;
1678 params.wpa_proto = wpa_s->wpa_proto;
1679 #ifdef CONFIG_HT_OVERRIDES
1680 os_memset(&htcaps, 0, sizeof(htcaps));
1681 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
1682 params.htcaps = (u8 *) &htcaps;
1683 params.htcaps_mask = (u8 *) &htcaps_mask;
1684 wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, &params);
1685 #endif /* CONFIG_HT_OVERRIDES */
1686 #ifdef CONFIG_VHT_OVERRIDES
1687 os_memset(&vhtcaps, 0, sizeof(vhtcaps));
1688 os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
1689 params.vhtcaps = &vhtcaps;
1690 params.vhtcaps_mask = &vhtcaps_mask;
1691 wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, &params);
1692 #endif /* CONFIG_VHT_OVERRIDES */
1693 #ifdef CONFIG_IEEE80211R
1694 if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies &&
1695 get_ie(wpa_s->sme.ft_ies, wpa_s->sme.ft_ies_len,
1696 WLAN_EID_RIC_DATA)) {
1697 /* There seems to be a pretty inconvenient bug in the Linux
1698 * kernel IE splitting functionality when RIC is used. For now,
1699 * skip correct behavior in IE construction here (i.e., drop the
1700 * additional non-FT-specific IEs) to avoid kernel issues. This
1701 * is fine since RIC is used only for testing purposes in the
1702 * current implementation. */
1703 wpa_printf(MSG_INFO,
1704 "SME: Linux kernel workaround - do not try to include additional IEs with RIC");
1705 params.wpa_ie = wpa_s->sme.ft_ies;
1706 params.wpa_ie_len = wpa_s->sme.ft_ies_len;
1707 } else if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
1708 const u8 *rm_en, *pos, *end;
1709 size_t rm_en_len = 0;
1710 u8 *rm_en_dup = NULL, *wpos;
1711
1712 /* Remove RSNE, MDE, FTE to allow them to be overridden with
1713 * FT specific values */
1714 remove_ie(wpa_s->sme.assoc_req_ie,
1715 &wpa_s->sme.assoc_req_ie_len,
1716 WLAN_EID_RSN);
1717 remove_ie(wpa_s->sme.assoc_req_ie,
1718 &wpa_s->sme.assoc_req_ie_len,
1719 WLAN_EID_MOBILITY_DOMAIN);
1720 remove_ie(wpa_s->sme.assoc_req_ie,
1721 &wpa_s->sme.assoc_req_ie_len,
1722 WLAN_EID_FAST_BSS_TRANSITION);
1723 rm_en = get_ie(wpa_s->sme.assoc_req_ie,
1724 wpa_s->sme.assoc_req_ie_len,
1725 WLAN_EID_RRM_ENABLED_CAPABILITIES);
1726 if (rm_en) {
1727 /* Need to remove RM Enabled Capabilities element as
1728 * well temporarily, so that it can be placed between
1729 * RSNE and MDE. */
1730 rm_en_len = 2 + rm_en[1];
1731 rm_en_dup = os_memdup(rm_en, rm_en_len);
1732 remove_ie(wpa_s->sme.assoc_req_ie,
1733 &wpa_s->sme.assoc_req_ie_len,
1734 WLAN_EID_RRM_ENABLED_CAPABILITIES);
1735 }
1736 wpa_hexdump(MSG_DEBUG,
1737 "SME: Association Request IEs after FT IE removal",
1738 wpa_s->sme.assoc_req_ie,
1739 wpa_s->sme.assoc_req_ie_len);
1740 if (wpa_s->sme.assoc_req_ie_len + wpa_s->sme.ft_ies_len +
1741 rm_en_len > sizeof(wpa_s->sme.assoc_req_ie)) {
1742 wpa_printf(MSG_ERROR,
1743 "SME: Not enough buffer room for FT IEs in Association Request frame");
1744 os_free(rm_en_dup);
1745 return;
1746 }
1747
1748 os_memmove(wpa_s->sme.assoc_req_ie + wpa_s->sme.ft_ies_len +
1749 rm_en_len,
1750 wpa_s->sme.assoc_req_ie,
1751 wpa_s->sme.assoc_req_ie_len);
1752 pos = wpa_s->sme.ft_ies;
1753 end = pos + wpa_s->sme.ft_ies_len;
1754 wpos = wpa_s->sme.assoc_req_ie;
1755 if (*pos == WLAN_EID_RSN) {
1756 os_memcpy(wpos, pos, 2 + pos[1]);
1757 wpos += 2 + pos[1];
1758 pos += 2 + pos[1];
1759 }
1760 if (rm_en_dup) {
1761 os_memcpy(wpos, rm_en_dup, rm_en_len);
1762 wpos += rm_en_len;
1763 os_free(rm_en_dup);
1764 }
1765 os_memcpy(wpos, pos, end - pos);
1766 wpa_s->sme.assoc_req_ie_len += wpa_s->sme.ft_ies_len +
1767 rm_en_len;
1768 params.wpa_ie = wpa_s->sme.assoc_req_ie;
1769 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
1770 wpa_hexdump(MSG_DEBUG,
1771 "SME: Association Request IEs after FT override",
1772 params.wpa_ie, params.wpa_ie_len);
1773 }
1774 #endif /* CONFIG_IEEE80211R */
1775 params.mode = mode;
1776 params.mgmt_frame_protection = wpa_s->sme.mfp;
1777 params.rrm_used = wpa_s->rrm.rrm_used;
1778 if (wpa_s->sme.prev_bssid_set)
1779 params.prev_bssid = wpa_s->sme.prev_bssid;
1780
1781 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
1782 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
1783 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
1784 params.freq.freq);
1785
1786 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
1787
1788 if (params.wpa_ie == NULL ||
1789 ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
1790 < 0) {
1791 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
1792 os_memset(&elems, 0, sizeof(elems));
1793 }
1794 if (elems.rsn_ie) {
1795 params.wpa_proto = WPA_PROTO_RSN;
1796 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
1797 elems.rsn_ie_len + 2);
1798 } else if (elems.wpa_ie) {
1799 params.wpa_proto = WPA_PROTO_WPA;
1800 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
1801 elems.wpa_ie_len + 2);
1802 } else if (elems.osen) {
1803 params.wpa_proto = WPA_PROTO_OSEN;
1804 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2,
1805 elems.osen_len + 2);
1806 } else
1807 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1808 if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
1809 params.p2p = 1;
1810
1811 if (wpa_s->p2pdev->set_sta_uapsd)
1812 params.uapsd = wpa_s->p2pdev->sta_uapsd;
1813 else
1814 params.uapsd = -1;
1815
1816 if (wpa_drv_associate(wpa_s, &params) < 0) {
1817 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
1818 "driver failed");
1819 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1820 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1821 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1822 return;
1823 }
1824
1825 eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
1826 NULL);
1827
1828 #ifdef CONFIG_TESTING_OPTIONS
1829 wpabuf_free(wpa_s->last_assoc_req_wpa_ie);
1830 wpa_s->last_assoc_req_wpa_ie = NULL;
1831 if (params.wpa_ie)
1832 wpa_s->last_assoc_req_wpa_ie =
1833 wpabuf_alloc_copy(params.wpa_ie, params.wpa_ie_len);
1834 #endif /* CONFIG_TESTING_OPTIONS */
1835 }
1836
1837
1838 int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
1839 const u8 *ies, size_t ies_len)
1840 {
1841 if (md == NULL || ies == NULL) {
1842 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
1843 os_free(wpa_s->sme.ft_ies);
1844 wpa_s->sme.ft_ies = NULL;
1845 wpa_s->sme.ft_ies_len = 0;
1846 wpa_s->sme.ft_used = 0;
1847 return 0;
1848 }
1849
1850 os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
1851 wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
1852 os_free(wpa_s->sme.ft_ies);
1853 wpa_s->sme.ft_ies = os_memdup(ies, ies_len);
1854 if (wpa_s->sme.ft_ies == NULL)
1855 return -1;
1856 wpa_s->sme.ft_ies_len = ies_len;
1857 return 0;
1858 }
1859
1860
1861 static void sme_deauth(struct wpa_supplicant *wpa_s)
1862 {
1863 int bssid_changed;
1864
1865 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
1866
1867 if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
1868 WLAN_REASON_DEAUTH_LEAVING) < 0) {
1869 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
1870 "failed");
1871 }
1872 wpa_s->sme.prev_bssid_set = 0;
1873
1874 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1875 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1876 os_memset(wpa_s->bssid, 0, ETH_ALEN);
1877 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1878 if (bssid_changed)
1879 wpas_notify_bssid_changed(wpa_s);
1880 }
1881
1882
1883 void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
1884 union wpa_event_data *data)
1885 {
1886 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
1887 "status code %d", MAC2STR(wpa_s->pending_bssid),
1888 data->assoc_reject.status_code);
1889
1890 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1891
1892 #ifdef CONFIG_SAE
1893 if (wpa_s->sme.sae_pmksa_caching && wpa_s->current_ssid &&
1894 wpa_key_mgmt_sae(wpa_s->current_ssid->key_mgmt)) {
1895 wpa_dbg(wpa_s, MSG_DEBUG,
1896 "PMKSA caching attempt rejected - drop PMKSA cache entry and fall back to SAE authentication");
1897 wpa_sm_aborted_cached(wpa_s->wpa);
1898 wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid);
1899 if (wpa_s->current_bss) {
1900 struct wpa_bss *bss = wpa_s->current_bss;
1901 struct wpa_ssid *ssid = wpa_s->current_ssid;
1902
1903 wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
1904 WLAN_REASON_DEAUTH_LEAVING);
1905 wpas_connect_work_done(wpa_s);
1906 wpa_supplicant_mark_disassoc(wpa_s);
1907 wpa_supplicant_connect(wpa_s, bss, ssid);
1908 return;
1909 }
1910 }
1911 #endif /* CONFIG_SAE */
1912
1913 /*
1914 * For now, unconditionally terminate the previous authentication. In
1915 * theory, this should not be needed, but mac80211 gets quite confused
1916 * if the authentication is left pending.. Some roaming cases might
1917 * benefit from using the previous authentication, so this could be
1918 * optimized in the future.
1919 */
1920 sme_deauth(wpa_s);
1921 }
1922
1923
1924 void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
1925 union wpa_event_data *data)
1926 {
1927 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
1928 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1929 wpa_supplicant_mark_disassoc(wpa_s);
1930 }
1931
1932
1933 void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
1934 union wpa_event_data *data)
1935 {
1936 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
1937 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1938 wpa_supplicant_mark_disassoc(wpa_s);
1939 }
1940
1941
1942 void sme_event_disassoc(struct wpa_supplicant *wpa_s,
1943 struct disassoc_info *info)
1944 {
1945 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
1946 if (wpa_s->sme.prev_bssid_set) {
1947 /*
1948 * cfg80211/mac80211 can get into somewhat confused state if
1949 * the AP only disassociates us and leaves us in authenticated
1950 * state. For now, force the state to be cleared to avoid
1951 * confusing errors if we try to associate with the AP again.
1952 */
1953 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
1954 "driver state");
1955 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
1956 WLAN_REASON_DEAUTH_LEAVING);
1957 }
1958 }
1959
1960
1961 static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
1962 {
1963 struct wpa_supplicant *wpa_s = eloop_ctx;
1964 if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
1965 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
1966 sme_deauth(wpa_s);
1967 }
1968 }
1969
1970
1971 static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
1972 {
1973 struct wpa_supplicant *wpa_s = eloop_ctx;
1974 if (wpa_s->wpa_state == WPA_ASSOCIATING) {
1975 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
1976 sme_deauth(wpa_s);
1977 }
1978 }
1979
1980
1981 void sme_state_changed(struct wpa_supplicant *wpa_s)
1982 {
1983 /* Make sure timers are cleaned up appropriately. */
1984 if (wpa_s->wpa_state != WPA_ASSOCIATING)
1985 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1986 if (wpa_s->wpa_state != WPA_AUTHENTICATING)
1987 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1988 }
1989
1990
1991 void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
1992 const u8 *prev_pending_bssid)
1993 {
1994 /*
1995 * mac80211-workaround to force deauth on failed auth cmd,
1996 * requires us to remain in authenticating state to allow the
1997 * second authentication attempt to be continued properly.
1998 */
1999 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
2000 "to proceed after disconnection event");
2001 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
2002 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
2003
2004 /*
2005 * Re-arm authentication timer in case auth fails for whatever reason.
2006 */
2007 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
2008 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
2009 NULL);
2010 }
2011
2012
2013 void sme_clear_on_disassoc(struct wpa_supplicant *wpa_s)
2014 {
2015 wpa_s->sme.prev_bssid_set = 0;
2016 #ifdef CONFIG_SAE
2017 wpabuf_free(wpa_s->sme.sae_token);
2018 wpa_s->sme.sae_token = NULL;
2019 sae_clear_data(&wpa_s->sme.sae);
2020 #endif /* CONFIG_SAE */
2021 #ifdef CONFIG_IEEE80211R
2022 if (wpa_s->sme.ft_ies || wpa_s->sme.ft_used)
2023 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
2024 #endif /* CONFIG_IEEE80211R */
2025 #ifdef CONFIG_IEEE80211W
2026 sme_stop_sa_query(wpa_s);
2027 #endif /* CONFIG_IEEE80211W */
2028 }
2029
2030
2031 void sme_deinit(struct wpa_supplicant *wpa_s)
2032 {
2033 sme_clear_on_disassoc(wpa_s);
2034
2035 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
2036 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
2037 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
2038 }
2039
2040
2041 static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
2042 const u8 *chan_list, u8 num_channels,
2043 u8 num_intol)
2044 {
2045 struct ieee80211_2040_bss_coex_ie *bc_ie;
2046 struct ieee80211_2040_intol_chan_report *ic_report;
2047 struct wpabuf *buf;
2048
2049 wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR
2050 " (num_channels=%u num_intol=%u)",
2051 MAC2STR(wpa_s->bssid), num_channels, num_intol);
2052 wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels",
2053 chan_list, num_channels);
2054
2055 buf = wpabuf_alloc(2 + /* action.category + action_code */
2056 sizeof(struct ieee80211_2040_bss_coex_ie) +
2057 sizeof(struct ieee80211_2040_intol_chan_report) +
2058 num_channels);
2059 if (buf == NULL)
2060 return;
2061
2062 wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
2063 wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
2064
2065 bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
2066 bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
2067 bc_ie->length = 1;
2068 if (num_intol)
2069 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
2070
2071 if (num_channels > 0) {
2072 ic_report = wpabuf_put(buf, sizeof(*ic_report));
2073 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
2074 ic_report->length = num_channels + 1;
2075 ic_report->op_class = 0;
2076 os_memcpy(wpabuf_put(buf, num_channels), chan_list,
2077 num_channels);
2078 }
2079
2080 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
2081 wpa_s->own_addr, wpa_s->bssid,
2082 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
2083 wpa_msg(wpa_s, MSG_INFO,
2084 "SME: Failed to send 20/40 BSS Coexistence frame");
2085 }
2086
2087 wpabuf_free(buf);
2088 }
2089
2090
2091 int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
2092 {
2093 struct wpa_bss *bss;
2094 const u8 *ie;
2095 u16 ht_cap;
2096 u8 chan_list[P2P_MAX_CHANNELS], channel;
2097 u8 num_channels = 0, num_intol = 0, i;
2098
2099 if (!wpa_s->sme.sched_obss_scan)
2100 return 0;
2101
2102 wpa_s->sme.sched_obss_scan = 0;
2103 if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
2104 return 1;
2105
2106 /*
2107 * Check whether AP uses regulatory triplet or channel triplet in
2108 * country info. Right now the operating class of the BSS channel
2109 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
2110 * based on the assumption that operating class triplet is not used in
2111 * beacon frame. If the First Channel Number/Operating Extension
2112 * Identifier octet has a positive integer value of 201 or greater,
2113 * then its operating class triplet.
2114 *
2115 * TODO: If Supported Operating Classes element is present in beacon
2116 * frame, have to lookup operating class in Annex E and fill them in
2117 * 2040 coex frame.
2118 */
2119 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
2120 if (ie && (ie[1] >= 6) && (ie[5] >= 201))
2121 return 1;
2122
2123 os_memset(chan_list, 0, sizeof(chan_list));
2124
2125 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2126 /* Skip other band bss */
2127 enum hostapd_hw_mode mode;
2128 mode = ieee80211_freq_to_chan(bss->freq, &channel);
2129 if (mode != HOSTAPD_MODE_IEEE80211G &&
2130 mode != HOSTAPD_MODE_IEEE80211B)
2131 continue;
2132
2133 ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
2134 ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
2135 wpa_printf(MSG_DEBUG, "SME OBSS scan BSS " MACSTR
2136 " freq=%u chan=%u ht_cap=0x%x",
2137 MAC2STR(bss->bssid), bss->freq, channel, ht_cap);
2138
2139 if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
2140 if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
2141 num_intol++;
2142
2143 /* Check whether the channel is already considered */
2144 for (i = 0; i < num_channels; i++) {
2145 if (channel == chan_list[i])
2146 break;
2147 }
2148 if (i != num_channels)
2149 continue;
2150
2151 chan_list[num_channels++] = channel;
2152 }
2153 }
2154
2155 sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
2156 return 1;
2157 }
2158
2159
2160 static void wpa_obss_scan_freqs_list(struct wpa_supplicant *wpa_s,
2161 struct wpa_driver_scan_params *params)
2162 {
2163 /* Include only affected channels */
2164 struct hostapd_hw_modes *mode;
2165 int count, i;
2166 int start, end;
2167
2168 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
2169 HOSTAPD_MODE_IEEE80211G);
2170 if (mode == NULL) {
2171 /* No channels supported in this band - use empty list */
2172 params->freqs = os_zalloc(sizeof(int));
2173 return;
2174 }
2175
2176 if (wpa_s->sme.ht_sec_chan == HT_SEC_CHAN_UNKNOWN &&
2177 wpa_s->current_bss) {
2178 const u8 *ie;
2179
2180 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_OPERATION);
2181 if (ie && ie[1] >= 2) {
2182 u8 o;
2183
2184 o = ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK;
2185 if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
2186 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_ABOVE;
2187 else if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
2188 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_BELOW;
2189 }
2190 }
2191
2192 start = wpa_s->assoc_freq - 10;
2193 end = wpa_s->assoc_freq + 10;
2194 switch (wpa_s->sme.ht_sec_chan) {
2195 case HT_SEC_CHAN_UNKNOWN:
2196 /* HT40+ possible on channels 1..9 */
2197 if (wpa_s->assoc_freq <= 2452)
2198 start -= 20;
2199 /* HT40- possible on channels 5-13 */
2200 if (wpa_s->assoc_freq >= 2432)
2201 end += 20;
2202 break;
2203 case HT_SEC_CHAN_ABOVE:
2204 end += 20;
2205 break;
2206 case HT_SEC_CHAN_BELOW:
2207 start -= 20;
2208 break;
2209 }
2210 wpa_printf(MSG_DEBUG,
2211 "OBSS: assoc_freq %d possible affected range %d-%d",
2212 wpa_s->assoc_freq, start, end);
2213
2214 params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
2215 if (params->freqs == NULL)
2216 return;
2217 for (count = 0, i = 0; i < mode->num_channels; i++) {
2218 int freq;
2219
2220 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
2221 continue;
2222 freq = mode->channels[i].freq;
2223 if (freq - 10 >= end || freq + 10 <= start)
2224 continue; /* not affected */
2225 params->freqs[count++] = freq;
2226 }
2227 }
2228
2229
2230 static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
2231 {
2232 struct wpa_supplicant *wpa_s = eloop_ctx;
2233 struct wpa_driver_scan_params params;
2234
2235 if (!wpa_s->current_bss) {
2236 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
2237 return;
2238 }
2239
2240 os_memset(&params, 0, sizeof(params));
2241 wpa_obss_scan_freqs_list(wpa_s, &params);
2242 params.low_priority = 1;
2243 wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
2244
2245 if (wpa_supplicant_trigger_scan(wpa_s, &params))
2246 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
2247 else
2248 wpa_s->sme.sched_obss_scan = 1;
2249 os_free(params.freqs);
2250
2251 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
2252 sme_obss_scan_timeout, wpa_s, NULL);
2253 }
2254
2255
2256 void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
2257 {
2258 const u8 *ie;
2259 struct wpa_bss *bss = wpa_s->current_bss;
2260 struct wpa_ssid *ssid = wpa_s->current_ssid;
2261 struct hostapd_hw_modes *hw_mode = NULL;
2262 int i;
2263
2264 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
2265 wpa_s->sme.sched_obss_scan = 0;
2266 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_UNKNOWN;
2267 if (!enable)
2268 return;
2269
2270 /*
2271 * Schedule OBSS scan if driver is using station SME in wpa_supplicant
2272 * or it expects OBSS scan to be performed by wpa_supplicant.
2273 */
2274 if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
2275 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
2276 ssid == NULL || ssid->mode != WPAS_MODE_INFRA)
2277 return;
2278
2279 if (!wpa_s->hw.modes)
2280 return;
2281
2282 /* only HT caps in 11g mode are relevant */
2283 for (i = 0; i < wpa_s->hw.num_modes; i++) {
2284 hw_mode = &wpa_s->hw.modes[i];
2285 if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
2286 break;
2287 }
2288
2289 /* Driver does not support HT40 for 11g or doesn't have 11g. */
2290 if (i == wpa_s->hw.num_modes || !hw_mode ||
2291 !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
2292 return;
2293
2294 if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
2295 return; /* Not associated on 2.4 GHz band */
2296
2297 /* Check whether AP supports HT40 */
2298 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
2299 if (!ie || ie[1] < 2 ||
2300 !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
2301 return; /* AP does not support HT40 */
2302
2303 ie = wpa_bss_get_ie(wpa_s->current_bss,
2304 WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
2305 if (!ie || ie[1] < 14)
2306 return; /* AP does not request OBSS scans */
2307
2308 wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
2309 if (wpa_s->sme.obss_scan_int < 10) {
2310 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
2311 "replaced with the minimum 10 sec",
2312 wpa_s->sme.obss_scan_int);
2313 wpa_s->sme.obss_scan_int = 10;
2314 }
2315 wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
2316 wpa_s->sme.obss_scan_int);
2317 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
2318 sme_obss_scan_timeout, wpa_s, NULL);
2319 }
2320
2321
2322 #ifdef CONFIG_IEEE80211W
2323
2324 static const unsigned int sa_query_max_timeout = 1000;
2325 static const unsigned int sa_query_retry_timeout = 201;
2326 static const unsigned int sa_query_ch_switch_max_delay = 5000; /* in usec */
2327
2328 static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
2329 {
2330 u32 tu;
2331 struct os_reltime now, passed;
2332 os_get_reltime(&now);
2333 os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed);
2334 tu = (passed.sec * 1000000 + passed.usec) / 1024;
2335 if (sa_query_max_timeout < tu) {
2336 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
2337 sme_stop_sa_query(wpa_s);
2338 wpa_supplicant_deauthenticate(
2339 wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
2340 return 1;
2341 }
2342
2343 return 0;
2344 }
2345
2346
2347 static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
2348 const u8 *trans_id)
2349 {
2350 u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN + OCV_OCI_EXTENDED_LEN];
2351 u8 req_len = 2 + WLAN_SA_QUERY_TR_ID_LEN;
2352
2353 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
2354 MACSTR, MAC2STR(wpa_s->bssid));
2355 wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
2356 trans_id, WLAN_SA_QUERY_TR_ID_LEN);
2357 req[0] = WLAN_ACTION_SA_QUERY;
2358 req[1] = WLAN_SA_QUERY_REQUEST;
2359 os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
2360
2361 #ifdef CONFIG_OCV
2362 if (wpa_sm_ocv_enabled(wpa_s->wpa)) {
2363 struct wpa_channel_info ci;
2364
2365 if (wpa_drv_channel_info(wpa_s, &ci) != 0) {
2366 wpa_printf(MSG_WARNING,
2367 "Failed to get channel info for OCI element in SA Query Request frame");
2368 return;
2369 }
2370
2371 if (ocv_insert_extended_oci(&ci, req + req_len) < 0)
2372 return;
2373
2374 req_len += OCV_OCI_EXTENDED_LEN;
2375 }
2376 #endif /* CONFIG_OCV */
2377
2378 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
2379 wpa_s->own_addr, wpa_s->bssid,
2380 req, req_len, 0) < 0)
2381 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
2382 "Request");
2383 }
2384
2385
2386 static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
2387 {
2388 struct wpa_supplicant *wpa_s = eloop_ctx;
2389 unsigned int timeout, sec, usec;
2390 u8 *trans_id, *nbuf;
2391
2392 if (wpa_s->sme.sa_query_count > 0 &&
2393 sme_check_sa_query_timeout(wpa_s))
2394 return;
2395
2396 nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
2397 wpa_s->sme.sa_query_count + 1,
2398 WLAN_SA_QUERY_TR_ID_LEN);
2399 if (nbuf == NULL) {
2400 sme_stop_sa_query(wpa_s);
2401 return;
2402 }
2403 if (wpa_s->sme.sa_query_count == 0) {
2404 /* Starting a new SA Query procedure */
2405 os_get_reltime(&wpa_s->sme.sa_query_start);
2406 }
2407 trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
2408 wpa_s->sme.sa_query_trans_id = nbuf;
2409 wpa_s->sme.sa_query_count++;
2410
2411 if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) {
2412 wpa_printf(MSG_DEBUG, "Could not generate SA Query ID");
2413 sme_stop_sa_query(wpa_s);
2414 return;
2415 }
2416
2417 timeout = sa_query_retry_timeout;
2418 sec = ((timeout / 1000) * 1024) / 1000;
2419 usec = (timeout % 1000) * 1024;
2420 eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
2421
2422 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
2423 wpa_s->sme.sa_query_count);
2424
2425 sme_send_sa_query_req(wpa_s, trans_id);
2426 }
2427
2428
2429 static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
2430 {
2431 sme_sa_query_timer(wpa_s, NULL);
2432 }
2433
2434
2435 static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
2436 {
2437 if (wpa_s->sme.sa_query_trans_id)
2438 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Stop SA Query");
2439 eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
2440 os_free(wpa_s->sme.sa_query_trans_id);
2441 wpa_s->sme.sa_query_trans_id = NULL;
2442 wpa_s->sme.sa_query_count = 0;
2443 }
2444
2445
2446 void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
2447 const u8 *da, u16 reason_code)
2448 {
2449 struct wpa_ssid *ssid;
2450 struct os_reltime now;
2451
2452 if (wpa_s->wpa_state != WPA_COMPLETED)
2453 return;
2454 ssid = wpa_s->current_ssid;
2455 if (wpas_get_ssid_pmf(wpa_s, ssid) == NO_MGMT_FRAME_PROTECTION)
2456 return;
2457 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
2458 return;
2459 if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
2460 reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
2461 return;
2462 if (wpa_s->sme.sa_query_count > 0)
2463 return;
2464
2465 os_get_reltime(&now);
2466 if (wpa_s->sme.last_unprot_disconnect.sec &&
2467 !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10))
2468 return; /* limit SA Query procedure frequency */
2469 wpa_s->sme.last_unprot_disconnect = now;
2470
2471 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
2472 "possible AP/STA state mismatch - trigger SA Query");
2473 sme_start_sa_query(wpa_s);
2474 }
2475
2476
2477 void sme_event_ch_switch(struct wpa_supplicant *wpa_s)
2478 {
2479 unsigned int usec;
2480 u32 _rand;
2481
2482 if (wpa_s->wpa_state != WPA_COMPLETED ||
2483 !wpa_sm_ocv_enabled(wpa_s->wpa))
2484 return;
2485
2486 wpa_dbg(wpa_s, MSG_DEBUG,
2487 "SME: Channel switch completed - trigger new SA Query to verify new operating channel");
2488 sme_stop_sa_query(wpa_s);
2489
2490 if (os_get_random((u8 *) &_rand, sizeof(_rand)) < 0)
2491 _rand = os_random();
2492 usec = _rand % (sa_query_ch_switch_max_delay + 1);
2493 eloop_register_timeout(0, usec, sme_sa_query_timer, wpa_s, NULL);
2494 }
2495
2496
2497 static void sme_process_sa_query_request(struct wpa_supplicant *wpa_s,
2498 const u8 *sa, const u8 *data,
2499 size_t len)
2500 {
2501 u8 resp[2 + WLAN_SA_QUERY_TR_ID_LEN + OCV_OCI_EXTENDED_LEN];
2502 u8 resp_len = 2 + WLAN_SA_QUERY_TR_ID_LEN;
2503
2504 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Response to "
2505 MACSTR, MAC2STR(wpa_s->bssid));
2506
2507 resp[0] = WLAN_ACTION_SA_QUERY;
2508 resp[1] = WLAN_SA_QUERY_RESPONSE;
2509 os_memcpy(resp + 2, data + 1, WLAN_SA_QUERY_TR_ID_LEN);
2510
2511 #ifdef CONFIG_OCV
2512 if (wpa_sm_ocv_enabled(wpa_s->wpa)) {
2513 struct wpa_channel_info ci;
2514
2515 if (wpa_drv_channel_info(wpa_s, &ci) != 0) {
2516 wpa_printf(MSG_WARNING,
2517 "Failed to get channel info for OCI element in SA Query Response frame");
2518 return;
2519 }
2520
2521 if (ocv_insert_extended_oci(&ci, resp + resp_len) < 0)
2522 return;
2523
2524 resp_len += OCV_OCI_EXTENDED_LEN;
2525 }
2526 #endif /* CONFIG_OCV */
2527
2528 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
2529 wpa_s->own_addr, wpa_s->bssid,
2530 resp, resp_len, 0) < 0)
2531 wpa_msg(wpa_s, MSG_INFO,
2532 "SME: Failed to send SA Query Response");
2533 }
2534
2535
2536 static void sme_process_sa_query_response(struct wpa_supplicant *wpa_s,
2537 const u8 *sa, const u8 *data,
2538 size_t len)
2539 {
2540 int i;
2541
2542 if (!wpa_s->sme.sa_query_trans_id)
2543 return;
2544
2545 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
2546 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
2547
2548 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
2549 return;
2550
2551 for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
2552 if (os_memcmp(wpa_s->sme.sa_query_trans_id +
2553 i * WLAN_SA_QUERY_TR_ID_LEN,
2554 data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
2555 break;
2556 }
2557
2558 if (i >= wpa_s->sme.sa_query_count) {
2559 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
2560 "transaction identifier found");
2561 return;
2562 }
2563
2564 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
2565 "from " MACSTR, MAC2STR(sa));
2566 sme_stop_sa_query(wpa_s);
2567 }
2568
2569
2570 void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
2571 const u8 *data, size_t len)
2572 {
2573 if (len < 1 + WLAN_SA_QUERY_TR_ID_LEN)
2574 return;
2575
2576 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query frame from "
2577 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
2578
2579 #ifdef CONFIG_OCV
2580 if (wpa_sm_ocv_enabled(wpa_s->wpa)) {
2581 struct ieee802_11_elems elems;
2582 struct wpa_channel_info ci;
2583
2584 if (ieee802_11_parse_elems(data + 1 + WLAN_SA_QUERY_TR_ID_LEN,
2585 len - 1 - WLAN_SA_QUERY_TR_ID_LEN,
2586 &elems, 1) == ParseFailed) {
2587 wpa_printf(MSG_DEBUG,
2588 "SA Query: Failed to parse elements");
2589 return;
2590 }
2591
2592 if (wpa_drv_channel_info(wpa_s, &ci) != 0) {
2593 wpa_printf(MSG_WARNING,
2594 "Failed to get channel info to validate received OCI in SA Query Action frame");
2595 return;
2596 }
2597
2598 if (ocv_verify_tx_params(elems.oci, elems.oci_len, &ci,
2599 channel_width_to_int(ci.chanwidth),
2600 ci.seg1_idx) != 0) {
2601 wpa_printf(MSG_WARNING, "%s", ocv_errorstr);
2602 return;
2603 }
2604 }
2605 #endif /* CONFIG_OCV */
2606
2607 if (data[0] == WLAN_SA_QUERY_REQUEST)
2608 sme_process_sa_query_request(wpa_s, sa, data, len);
2609 else if (data[0] == WLAN_SA_QUERY_RESPONSE)
2610 sme_process_sa_query_response(wpa_s, sa, data, len);
2611 }
2612
2613 #endif /* CONFIG_IEEE80211W */
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