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tests: Fix ap_ft_reassoc_replay for case where wlantest has the PSK
[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 if (wpa_s->conf->sae_pmkid_in_assoc && status == WLAN_STATUS_SUCCESS)
976 params.pmkid = wpa_s->sme.sae.pmkid;
977 wpa_drv_send_external_auth_status(wpa_s, &params);
978 }
979
980
981 static int sme_handle_external_auth_start(struct wpa_supplicant *wpa_s,
982 union wpa_event_data *data)
983 {
984 struct wpa_ssid *ssid;
985 size_t ssid_str_len = data->external_auth.ssid_len;
986 const u8 *ssid_str = data->external_auth.ssid;
987
988 /* Get the SSID conf from the ssid string obtained */
989 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
990 if (!wpas_network_disabled(wpa_s, ssid) &&
991 ssid_str_len == ssid->ssid_len &&
992 os_memcmp(ssid_str, ssid->ssid, ssid_str_len) == 0 &&
993 (ssid->key_mgmt & (WPA_KEY_MGMT_SAE | WPA_KEY_MGMT_FT_SAE)))
994 break;
995 }
996 if (!ssid ||
997 sme_external_auth_send_sae_commit(wpa_s, data->external_auth.bssid,
998 ssid) < 0)
999 return -1;
1000
1001 return 0;
1002 }
1003
1004
1005 static void sme_external_auth_send_sae_confirm(struct wpa_supplicant *wpa_s,
1006 const u8 *da)
1007 {
1008 struct wpabuf *resp, *buf;
1009
1010 resp = sme_auth_build_sae_confirm(wpa_s, 1);
1011 if (!resp) {
1012 wpa_printf(MSG_DEBUG, "SAE: Confirm message buf alloc failure");
1013 return;
1014 }
1015
1016 wpa_s->sme.sae.state = SAE_CONFIRMED;
1017 buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN + wpabuf_len(resp));
1018 if (!buf) {
1019 wpa_printf(MSG_DEBUG, "SAE: Auth Confirm buf alloc failure");
1020 wpabuf_free(resp);
1021 return;
1022 }
1023 wpa_s->sme.seq_num++;
1024 sme_external_auth_build_buf(buf, resp, wpa_s->own_addr,
1025 da, 2, wpa_s->sme.seq_num);
1026 wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 0);
1027 wpabuf_free(resp);
1028 wpabuf_free(buf);
1029 }
1030
1031
1032 void sme_external_auth_trigger(struct wpa_supplicant *wpa_s,
1033 union wpa_event_data *data)
1034 {
1035 if (RSN_SELECTOR_GET(&data->external_auth.key_mgmt_suite) !=
1036 RSN_AUTH_KEY_MGMT_SAE)
1037 return;
1038
1039 if (data->external_auth.action == EXT_AUTH_START) {
1040 if (!data->external_auth.bssid || !data->external_auth.ssid)
1041 return;
1042 os_memcpy(wpa_s->sme.ext_auth_bssid, data->external_auth.bssid,
1043 ETH_ALEN);
1044 os_memcpy(wpa_s->sme.ext_auth_ssid, data->external_auth.ssid,
1045 data->external_auth.ssid_len);
1046 wpa_s->sme.ext_auth_ssid_len = data->external_auth.ssid_len;
1047 wpa_s->sme.seq_num = 0;
1048 wpa_s->sme.sae.state = SAE_NOTHING;
1049 wpa_s->sme.sae.send_confirm = 0;
1050 wpa_s->sme.sae_group_index = 0;
1051 if (sme_handle_external_auth_start(wpa_s, data) < 0)
1052 sme_send_external_auth_status(wpa_s,
1053 WLAN_STATUS_UNSPECIFIED_FAILURE);
1054 } else if (data->external_auth.action == EXT_AUTH_ABORT) {
1055 /* Report failure to driver for the wrong trigger */
1056 sme_send_external_auth_status(wpa_s,
1057 WLAN_STATUS_UNSPECIFIED_FAILURE);
1058 }
1059 }
1060
1061
1062 static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
1063 u16 status_code, const u8 *data, size_t len,
1064 int external, const u8 *sa)
1065 {
1066 int *groups;
1067
1068 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
1069 "status code %u", auth_transaction, status_code);
1070
1071 if (auth_transaction == 1 &&
1072 status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
1073 wpa_s->sme.sae.state == SAE_COMMITTED &&
1074 (external || wpa_s->current_bss) && wpa_s->current_ssid) {
1075 int default_groups[] = { 19, 20, 21, 0 };
1076 u16 group;
1077
1078 groups = wpa_s->conf->sae_groups;
1079 if (!groups || groups[0] <= 0)
1080 groups = default_groups;
1081
1082 if (len < sizeof(le16)) {
1083 wpa_dbg(wpa_s, MSG_DEBUG,
1084 "SME: Too short SAE anti-clogging token request");
1085 return -1;
1086 }
1087 group = WPA_GET_LE16(data);
1088 wpa_dbg(wpa_s, MSG_DEBUG,
1089 "SME: SAE anti-clogging token requested (group %u)",
1090 group);
1091 if (sae_group_allowed(&wpa_s->sme.sae, groups, group) !=
1092 WLAN_STATUS_SUCCESS) {
1093 wpa_dbg(wpa_s, MSG_ERROR,
1094 "SME: SAE group %u of anti-clogging request is invalid",
1095 group);
1096 return -1;
1097 }
1098 wpabuf_free(wpa_s->sme.sae_token);
1099 wpa_s->sme.sae_token = wpabuf_alloc_copy(data + sizeof(le16),
1100 len - sizeof(le16));
1101 if (!external)
1102 sme_send_authentication(wpa_s, wpa_s->current_bss,
1103 wpa_s->current_ssid, 2);
1104 else
1105 sme_external_auth_send_sae_commit(
1106 wpa_s, wpa_s->sme.ext_auth_bssid,
1107 wpa_s->current_ssid);
1108 return 0;
1109 }
1110
1111 if (auth_transaction == 1 &&
1112 status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
1113 wpa_s->sme.sae.state == SAE_COMMITTED &&
1114 (external || wpa_s->current_bss) && wpa_s->current_ssid) {
1115 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
1116 wpa_s->sme.sae_group_index++;
1117 if (sme_set_sae_group(wpa_s) < 0)
1118 return -1; /* no other groups enabled */
1119 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
1120 if (!external)
1121 sme_send_authentication(wpa_s, wpa_s->current_bss,
1122 wpa_s->current_ssid, 1);
1123 else
1124 sme_external_auth_send_sae_commit(
1125 wpa_s, wpa_s->sme.ext_auth_bssid,
1126 wpa_s->current_ssid);
1127 return 0;
1128 }
1129
1130 if (auth_transaction == 1 &&
1131 status_code == WLAN_STATUS_UNKNOWN_PASSWORD_IDENTIFIER) {
1132 const u8 *bssid = sa ? sa : wpa_s->pending_bssid;
1133
1134 wpa_msg(wpa_s, MSG_INFO,
1135 WPA_EVENT_SAE_UNKNOWN_PASSWORD_IDENTIFIER MACSTR,
1136 MAC2STR(bssid));
1137 return -1;
1138 }
1139
1140 if (status_code != WLAN_STATUS_SUCCESS)
1141 return -1;
1142
1143 if (auth_transaction == 1) {
1144 u16 res;
1145
1146 groups = wpa_s->conf->sae_groups;
1147
1148 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
1149 if ((!external && wpa_s->current_bss == NULL) ||
1150 wpa_s->current_ssid == NULL)
1151 return -1;
1152 if (wpa_s->sme.sae.state != SAE_COMMITTED)
1153 return -1;
1154 if (groups && groups[0] <= 0)
1155 groups = NULL;
1156 res = sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
1157 groups);
1158 if (res == SAE_SILENTLY_DISCARD) {
1159 wpa_printf(MSG_DEBUG,
1160 "SAE: Drop commit message due to reflection attack");
1161 return 0;
1162 }
1163 if (res != WLAN_STATUS_SUCCESS)
1164 return -1;
1165
1166 if (sae_process_commit(&wpa_s->sme.sae) < 0) {
1167 wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
1168 "commit");
1169 return -1;
1170 }
1171
1172 wpabuf_free(wpa_s->sme.sae_token);
1173 wpa_s->sme.sae_token = NULL;
1174 if (!external)
1175 sme_send_authentication(wpa_s, wpa_s->current_bss,
1176 wpa_s->current_ssid, 0);
1177 else
1178 sme_external_auth_send_sae_confirm(wpa_s, sa);
1179 return 0;
1180 } else if (auth_transaction == 2) {
1181 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
1182 if (wpa_s->sme.sae.state != SAE_CONFIRMED)
1183 return -1;
1184 if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
1185 return -1;
1186 wpa_s->sme.sae.state = SAE_ACCEPTED;
1187 sae_clear_temp_data(&wpa_s->sme.sae);
1188
1189 if (external) {
1190 /* Report success to driver */
1191 sme_send_external_auth_status(wpa_s,
1192 WLAN_STATUS_SUCCESS);
1193 }
1194
1195 return 1;
1196 }
1197
1198 return -1;
1199 }
1200
1201
1202 static int sme_sae_set_pmk(struct wpa_supplicant *wpa_s, const u8 *bssid)
1203 {
1204 wpa_printf(MSG_DEBUG,
1205 "SME: SAE completed - setting PMK for 4-way handshake");
1206 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN,
1207 wpa_s->sme.sae.pmkid, bssid);
1208 if (wpa_s->conf->sae_pmkid_in_assoc) {
1209 /* Update the own RSNE contents now that we have set the PMK
1210 * and added a PMKSA cache entry based on the successfully
1211 * completed SAE exchange. In practice, this will add the PMKID
1212 * into RSNE. */
1213 if (wpa_s->sme.assoc_req_ie_len + 2 + PMKID_LEN >
1214 sizeof(wpa_s->sme.assoc_req_ie)) {
1215 wpa_msg(wpa_s, MSG_WARNING,
1216 "RSN: Not enough room for inserting own PMKID into RSNE");
1217 return -1;
1218 }
1219 if (wpa_insert_pmkid(wpa_s->sme.assoc_req_ie,
1220 &wpa_s->sme.assoc_req_ie_len,
1221 wpa_s->sme.sae.pmkid) < 0)
1222 return -1;
1223 wpa_hexdump(MSG_DEBUG,
1224 "SME: Updated Association Request IEs",
1225 wpa_s->sme.assoc_req_ie,
1226 wpa_s->sme.assoc_req_ie_len);
1227 }
1228
1229 return 0;
1230 }
1231
1232
1233 void sme_external_auth_mgmt_rx(struct wpa_supplicant *wpa_s,
1234 const u8 *auth_frame, size_t len)
1235 {
1236 const struct ieee80211_mgmt *header;
1237 size_t auth_length;
1238
1239 header = (const struct ieee80211_mgmt *) auth_frame;
1240 auth_length = IEEE80211_HDRLEN + sizeof(header->u.auth);
1241
1242 if (len < auth_length) {
1243 /* Notify failure to the driver */
1244 sme_send_external_auth_status(wpa_s,
1245 WLAN_STATUS_UNSPECIFIED_FAILURE);
1246 return;
1247 }
1248
1249 if (le_to_host16(header->u.auth.auth_alg) == WLAN_AUTH_SAE) {
1250 int res;
1251
1252 res = sme_sae_auth(
1253 wpa_s, le_to_host16(header->u.auth.auth_transaction),
1254 le_to_host16(header->u.auth.status_code),
1255 header->u.auth.variable,
1256 len - auth_length, 1, header->sa);
1257 if (res < 0) {
1258 /* Notify failure to the driver */
1259 sme_send_external_auth_status(
1260 wpa_s, WLAN_STATUS_UNSPECIFIED_FAILURE);
1261 return;
1262 }
1263 if (res != 1)
1264 return;
1265
1266 if (sme_sae_set_pmk(wpa_s, wpa_s->sme.ext_auth_bssid) < 0)
1267 return;
1268 }
1269 }
1270
1271 #endif /* CONFIG_SAE */
1272
1273
1274 void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
1275 {
1276 struct wpa_ssid *ssid = wpa_s->current_ssid;
1277
1278 if (ssid == NULL) {
1279 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
1280 "when network is not selected");
1281 return;
1282 }
1283
1284 if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
1285 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
1286 "when not in authenticating state");
1287 return;
1288 }
1289
1290 if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
1291 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
1292 "unexpected peer " MACSTR,
1293 MAC2STR(data->auth.peer));
1294 return;
1295 }
1296
1297 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
1298 " auth_type=%d auth_transaction=%d status_code=%d",
1299 MAC2STR(data->auth.peer), data->auth.auth_type,
1300 data->auth.auth_transaction, data->auth.status_code);
1301 wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
1302 data->auth.ies, data->auth.ies_len);
1303
1304 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1305
1306 #ifdef CONFIG_SAE
1307 if (data->auth.auth_type == WLAN_AUTH_SAE) {
1308 int res;
1309 res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
1310 data->auth.status_code, data->auth.ies,
1311 data->auth.ies_len, 0, NULL);
1312 if (res < 0) {
1313 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1314 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1315
1316 }
1317 if (res != 1)
1318 return;
1319
1320 if (sme_sae_set_pmk(wpa_s, wpa_s->pending_bssid) < 0)
1321 return;
1322 }
1323 #endif /* CONFIG_SAE */
1324
1325 if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
1326 char *ie_txt = NULL;
1327
1328 if (data->auth.ies && data->auth.ies_len) {
1329 size_t buflen = 2 * data->auth.ies_len + 1;
1330 ie_txt = os_malloc(buflen);
1331 if (ie_txt) {
1332 wpa_snprintf_hex(ie_txt, buflen, data->auth.ies,
1333 data->auth.ies_len);
1334 }
1335 }
1336 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AUTH_REJECT MACSTR
1337 " auth_type=%u auth_transaction=%u status_code=%u%s%s",
1338 MAC2STR(data->auth.peer), data->auth.auth_type,
1339 data->auth.auth_transaction, data->auth.status_code,
1340 ie_txt ? " ie=" : "",
1341 ie_txt ? ie_txt : "");
1342 os_free(ie_txt);
1343
1344 #ifdef CONFIG_FILS
1345 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FILS ||
1346 wpa_s->sme.auth_alg == WPA_AUTH_ALG_FILS_SK_PFS)
1347 fils_connection_failure(wpa_s);
1348 #endif /* CONFIG_FILS */
1349
1350 if (data->auth.status_code !=
1351 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
1352 wpa_s->sme.auth_alg == data->auth.auth_type ||
1353 wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
1354 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1355 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1356 return;
1357 }
1358
1359 wpas_connect_work_done(wpa_s);
1360
1361 switch (data->auth.auth_type) {
1362 case WLAN_AUTH_OPEN:
1363 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
1364
1365 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
1366 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
1367 wpa_s->current_ssid);
1368 return;
1369
1370 case WLAN_AUTH_SHARED_KEY:
1371 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
1372
1373 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
1374 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
1375 wpa_s->current_ssid);
1376 return;
1377
1378 default:
1379 return;
1380 }
1381 }
1382
1383 #ifdef CONFIG_IEEE80211R
1384 if (data->auth.auth_type == WLAN_AUTH_FT) {
1385 const u8 *ric_ies = NULL;
1386 size_t ric_ies_len = 0;
1387
1388 if (wpa_s->ric_ies) {
1389 ric_ies = wpabuf_head(wpa_s->ric_ies);
1390 ric_ies_len = wpabuf_len(wpa_s->ric_ies);
1391 }
1392 if (wpa_ft_process_response(wpa_s->wpa, data->auth.ies,
1393 data->auth.ies_len, 0,
1394 data->auth.peer,
1395 ric_ies, ric_ies_len) < 0) {
1396 wpa_dbg(wpa_s, MSG_DEBUG,
1397 "SME: FT Authentication response processing failed");
1398 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
1399 MACSTR
1400 " reason=%d locally_generated=1",
1401 MAC2STR(wpa_s->pending_bssid),
1402 WLAN_REASON_DEAUTH_LEAVING);
1403 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1404 wpa_supplicant_mark_disassoc(wpa_s);
1405 return;
1406 }
1407 }
1408 #endif /* CONFIG_IEEE80211R */
1409
1410 #ifdef CONFIG_FILS
1411 if (data->auth.auth_type == WLAN_AUTH_FILS_SK ||
1412 data->auth.auth_type == WLAN_AUTH_FILS_SK_PFS) {
1413 u16 expect_auth_type;
1414
1415 expect_auth_type = wpa_s->sme.auth_alg ==
1416 WPA_AUTH_ALG_FILS_SK_PFS ? WLAN_AUTH_FILS_SK_PFS :
1417 WLAN_AUTH_FILS_SK;
1418 if (data->auth.auth_type != expect_auth_type) {
1419 wpa_dbg(wpa_s, MSG_DEBUG,
1420 "SME: FILS Authentication response used different auth alg (%u; expected %u)",
1421 data->auth.auth_type, expect_auth_type);
1422 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
1423 MACSTR
1424 " reason=%d locally_generated=1",
1425 MAC2STR(wpa_s->pending_bssid),
1426 WLAN_REASON_DEAUTH_LEAVING);
1427 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1428 wpa_supplicant_mark_disassoc(wpa_s);
1429 return;
1430 }
1431
1432 if (fils_process_auth(wpa_s->wpa, wpa_s->pending_bssid,
1433 data->auth.ies, data->auth.ies_len) < 0) {
1434 wpa_dbg(wpa_s, MSG_DEBUG,
1435 "SME: FILS Authentication response processing failed");
1436 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
1437 MACSTR
1438 " reason=%d locally_generated=1",
1439 MAC2STR(wpa_s->pending_bssid),
1440 WLAN_REASON_DEAUTH_LEAVING);
1441 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1442 wpa_supplicant_mark_disassoc(wpa_s);
1443 return;
1444 }
1445 }
1446 #endif /* CONFIG_FILS */
1447
1448 sme_associate(wpa_s, ssid->mode, data->auth.peer,
1449 data->auth.auth_type);
1450 }
1451
1452
1453 #ifdef CONFIG_IEEE80211R
1454 static void remove_ie(u8 *buf, size_t *len, u8 eid)
1455 {
1456 u8 *pos, *next, *end;
1457
1458 pos = (u8 *) get_ie(buf, *len, eid);
1459 if (pos) {
1460 next = pos + 2 + pos[1];
1461 end = buf + *len;
1462 *len -= 2 + pos[1];
1463 os_memmove(pos, next, end - next);
1464 }
1465 }
1466 #endif /* CONFIG_IEEE80211R */
1467
1468
1469 void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
1470 const u8 *bssid, u16 auth_type)
1471 {
1472 struct wpa_driver_associate_params params;
1473 struct ieee802_11_elems elems;
1474 #ifdef CONFIG_FILS
1475 u8 nonces[2 * FILS_NONCE_LEN];
1476 #endif /* CONFIG_FILS */
1477 #ifdef CONFIG_HT_OVERRIDES
1478 struct ieee80211_ht_capabilities htcaps;
1479 struct ieee80211_ht_capabilities htcaps_mask;
1480 #endif /* CONFIG_HT_OVERRIDES */
1481 #ifdef CONFIG_VHT_OVERRIDES
1482 struct ieee80211_vht_capabilities vhtcaps;
1483 struct ieee80211_vht_capabilities vhtcaps_mask;
1484 #endif /* CONFIG_VHT_OVERRIDES */
1485
1486 os_memset(&params, 0, sizeof(params));
1487
1488 #ifdef CONFIG_FILS
1489 if (auth_type == WLAN_AUTH_FILS_SK ||
1490 auth_type == WLAN_AUTH_FILS_SK_PFS) {
1491 struct wpabuf *buf;
1492 const u8 *snonce, *anonce;
1493 const unsigned int max_hlp = 20;
1494 struct wpabuf *hlp[max_hlp];
1495 unsigned int i, num_hlp = 0;
1496 struct fils_hlp_req *req;
1497
1498 dl_list_for_each(req, &wpa_s->fils_hlp_req, struct fils_hlp_req,
1499 list) {
1500 hlp[num_hlp] = wpabuf_alloc(2 * ETH_ALEN + 6 +
1501 wpabuf_len(req->pkt));
1502 if (!hlp[num_hlp])
1503 break;
1504 wpabuf_put_data(hlp[num_hlp], req->dst, ETH_ALEN);
1505 wpabuf_put_data(hlp[num_hlp], wpa_s->own_addr,
1506 ETH_ALEN);
1507 wpabuf_put_data(hlp[num_hlp],
1508 "\xaa\xaa\x03\x00\x00\x00", 6);
1509 wpabuf_put_buf(hlp[num_hlp], req->pkt);
1510 num_hlp++;
1511 if (num_hlp >= max_hlp)
1512 break;
1513 }
1514
1515 buf = fils_build_assoc_req(wpa_s->wpa, &params.fils_kek,
1516 &params.fils_kek_len, &snonce,
1517 &anonce,
1518 (const struct wpabuf **) hlp,
1519 num_hlp);
1520 for (i = 0; i < num_hlp; i++)
1521 wpabuf_free(hlp[i]);
1522 if (!buf)
1523 return;
1524 wpa_hexdump(MSG_DEBUG, "FILS: assoc_req before FILS elements",
1525 wpa_s->sme.assoc_req_ie,
1526 wpa_s->sme.assoc_req_ie_len);
1527 #ifdef CONFIG_IEEE80211R
1528 if (wpa_key_mgmt_ft(wpa_s->key_mgmt)) {
1529 /* Remove RSNE and MDE to allow them to be overridden
1530 * with FILS+FT specific values from
1531 * fils_build_assoc_req(). */
1532 remove_ie(wpa_s->sme.assoc_req_ie,
1533 &wpa_s->sme.assoc_req_ie_len,
1534 WLAN_EID_RSN);
1535 wpa_hexdump(MSG_DEBUG,
1536 "FILS: assoc_req after RSNE removal",
1537 wpa_s->sme.assoc_req_ie,
1538 wpa_s->sme.assoc_req_ie_len);
1539 remove_ie(wpa_s->sme.assoc_req_ie,
1540 &wpa_s->sme.assoc_req_ie_len,
1541 WLAN_EID_MOBILITY_DOMAIN);
1542 wpa_hexdump(MSG_DEBUG,
1543 "FILS: assoc_req after MDE removal",
1544 wpa_s->sme.assoc_req_ie,
1545 wpa_s->sme.assoc_req_ie_len);
1546 }
1547 #endif /* CONFIG_IEEE80211R */
1548 /* TODO: Make wpa_s->sme.assoc_req_ie use dynamic allocation */
1549 if (wpa_s->sme.assoc_req_ie_len + wpabuf_len(buf) >
1550 sizeof(wpa_s->sme.assoc_req_ie)) {
1551 wpa_printf(MSG_ERROR,
1552 "FILS: Not enough buffer room for own AssocReq elements");
1553 wpabuf_free(buf);
1554 return;
1555 }
1556 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1557 wpabuf_head(buf), wpabuf_len(buf));
1558 wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf);
1559 wpabuf_free(buf);
1560 wpa_hexdump(MSG_DEBUG, "FILS: assoc_req after FILS elements",
1561 wpa_s->sme.assoc_req_ie,
1562 wpa_s->sme.assoc_req_ie_len);
1563
1564 os_memcpy(nonces, snonce, FILS_NONCE_LEN);
1565 os_memcpy(nonces + FILS_NONCE_LEN, anonce, FILS_NONCE_LEN);
1566 params.fils_nonces = nonces;
1567 params.fils_nonces_len = sizeof(nonces);
1568 }
1569 #endif /* CONFIG_FILS */
1570
1571 #ifdef CONFIG_OWE
1572 #ifdef CONFIG_TESTING_OPTIONS
1573 if (get_ie_ext(wpa_s->sme.assoc_req_ie, wpa_s->sme.assoc_req_ie_len,
1574 WLAN_EID_EXT_OWE_DH_PARAM)) {
1575 wpa_printf(MSG_INFO, "TESTING: Override OWE DH element");
1576 } else
1577 #endif /* CONFIG_TESTING_OPTIONS */
1578 if (auth_type == WLAN_AUTH_OPEN &&
1579 wpa_s->key_mgmt == WPA_KEY_MGMT_OWE) {
1580 struct wpabuf *owe_ie;
1581 u16 group;
1582
1583 if (wpa_s->current_ssid && wpa_s->current_ssid->owe_group) {
1584 group = wpa_s->current_ssid->owe_group;
1585 } else if (wpa_s->assoc_status_code ==
1586 WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED) {
1587 if (wpa_s->last_owe_group == 19)
1588 group = 20;
1589 else if (wpa_s->last_owe_group == 20)
1590 group = 21;
1591 else
1592 group = OWE_DH_GROUP;
1593 } else {
1594 group = OWE_DH_GROUP;
1595 }
1596
1597 wpa_s->last_owe_group = group;
1598 wpa_printf(MSG_DEBUG, "OWE: Try to use group %u", group);
1599 owe_ie = owe_build_assoc_req(wpa_s->wpa, group);
1600 if (!owe_ie) {
1601 wpa_printf(MSG_ERROR,
1602 "OWE: Failed to build IE for Association Request frame");
1603 return;
1604 }
1605 if (wpa_s->sme.assoc_req_ie_len + wpabuf_len(owe_ie) >
1606 sizeof(wpa_s->sme.assoc_req_ie)) {
1607 wpa_printf(MSG_ERROR,
1608 "OWE: Not enough buffer room for own Association Request frame elements");
1609 wpabuf_free(owe_ie);
1610 return;
1611 }
1612 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1613 wpabuf_head(owe_ie), wpabuf_len(owe_ie));
1614 wpa_s->sme.assoc_req_ie_len += wpabuf_len(owe_ie);
1615 wpabuf_free(owe_ie);
1616 }
1617 #endif /* CONFIG_OWE */
1618
1619 #ifdef CONFIG_DPP2
1620 if (wpa_s->key_mgmt == WPA_KEY_MGMT_DPP && wpa_s->current_ssid &&
1621 wpa_s->current_ssid->dpp_netaccesskey) {
1622 struct wpa_ssid *ssid = wpa_s->current_ssid;
1623
1624 dpp_pfs_free(wpa_s->dpp_pfs);
1625 wpa_s->dpp_pfs = dpp_pfs_init(ssid->dpp_netaccesskey,
1626 ssid->dpp_netaccesskey_len);
1627 if (!wpa_s->dpp_pfs) {
1628 wpa_printf(MSG_DEBUG, "DPP: Could not initialize PFS");
1629 /* Try to continue without PFS */
1630 goto pfs_fail;
1631 }
1632 if (wpa_s->sme.assoc_req_ie_len +
1633 wpabuf_len(wpa_s->dpp_pfs->ie) >
1634 sizeof(wpa_s->sme.assoc_req_ie)) {
1635 wpa_printf(MSG_ERROR,
1636 "DPP: Not enough buffer room for own Association Request frame elements");
1637 dpp_pfs_free(wpa_s->dpp_pfs);
1638 wpa_s->dpp_pfs = NULL;
1639 goto pfs_fail;
1640 }
1641 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1642 wpabuf_head(wpa_s->dpp_pfs->ie),
1643 wpabuf_len(wpa_s->dpp_pfs->ie));
1644 wpa_s->sme.assoc_req_ie_len += wpabuf_len(wpa_s->dpp_pfs->ie);
1645 }
1646 pfs_fail:
1647 #endif /* CONFIG_DPP2 */
1648
1649 if (wpa_s->current_ssid && wpa_s->current_ssid->multi_ap_backhaul_sta) {
1650 size_t multi_ap_ie_len;
1651
1652 multi_ap_ie_len = add_multi_ap_ie(
1653 wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1654 sizeof(wpa_s->sme.assoc_req_ie) -
1655 wpa_s->sme.assoc_req_ie_len,
1656 MULTI_AP_BACKHAUL_STA);
1657 if (multi_ap_ie_len == 0) {
1658 wpa_printf(MSG_ERROR,
1659 "Multi-AP: Failed to build Multi-AP IE");
1660 return;
1661 }
1662 wpa_s->sme.assoc_req_ie_len += multi_ap_ie_len;
1663 }
1664
1665 params.bssid = bssid;
1666 params.ssid = wpa_s->sme.ssid;
1667 params.ssid_len = wpa_s->sme.ssid_len;
1668 params.freq.freq = wpa_s->sme.freq;
1669 params.bg_scan_period = wpa_s->current_ssid ?
1670 wpa_s->current_ssid->bg_scan_period : -1;
1671 params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
1672 wpa_s->sme.assoc_req_ie : NULL;
1673 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
1674 wpa_hexdump(MSG_DEBUG, "SME: Association Request IEs",
1675 params.wpa_ie, params.wpa_ie_len);
1676 params.pairwise_suite = wpa_s->pairwise_cipher;
1677 params.group_suite = wpa_s->group_cipher;
1678 params.mgmt_group_suite = wpa_s->mgmt_group_cipher;
1679 params.key_mgmt_suite = wpa_s->key_mgmt;
1680 params.wpa_proto = wpa_s->wpa_proto;
1681 #ifdef CONFIG_HT_OVERRIDES
1682 os_memset(&htcaps, 0, sizeof(htcaps));
1683 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
1684 params.htcaps = (u8 *) &htcaps;
1685 params.htcaps_mask = (u8 *) &htcaps_mask;
1686 wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, &params);
1687 #endif /* CONFIG_HT_OVERRIDES */
1688 #ifdef CONFIG_VHT_OVERRIDES
1689 os_memset(&vhtcaps, 0, sizeof(vhtcaps));
1690 os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
1691 params.vhtcaps = &vhtcaps;
1692 params.vhtcaps_mask = &vhtcaps_mask;
1693 wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, &params);
1694 #endif /* CONFIG_VHT_OVERRIDES */
1695 #ifdef CONFIG_IEEE80211R
1696 if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies &&
1697 get_ie(wpa_s->sme.ft_ies, wpa_s->sme.ft_ies_len,
1698 WLAN_EID_RIC_DATA)) {
1699 /* There seems to be a pretty inconvenient bug in the Linux
1700 * kernel IE splitting functionality when RIC is used. For now,
1701 * skip correct behavior in IE construction here (i.e., drop the
1702 * additional non-FT-specific IEs) to avoid kernel issues. This
1703 * is fine since RIC is used only for testing purposes in the
1704 * current implementation. */
1705 wpa_printf(MSG_INFO,
1706 "SME: Linux kernel workaround - do not try to include additional IEs with RIC");
1707 params.wpa_ie = wpa_s->sme.ft_ies;
1708 params.wpa_ie_len = wpa_s->sme.ft_ies_len;
1709 } else if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
1710 const u8 *rm_en, *pos, *end;
1711 size_t rm_en_len = 0;
1712 u8 *rm_en_dup = NULL, *wpos;
1713
1714 /* Remove RSNE, MDE, FTE to allow them to be overridden with
1715 * FT specific values */
1716 remove_ie(wpa_s->sme.assoc_req_ie,
1717 &wpa_s->sme.assoc_req_ie_len,
1718 WLAN_EID_RSN);
1719 remove_ie(wpa_s->sme.assoc_req_ie,
1720 &wpa_s->sme.assoc_req_ie_len,
1721 WLAN_EID_MOBILITY_DOMAIN);
1722 remove_ie(wpa_s->sme.assoc_req_ie,
1723 &wpa_s->sme.assoc_req_ie_len,
1724 WLAN_EID_FAST_BSS_TRANSITION);
1725 rm_en = get_ie(wpa_s->sme.assoc_req_ie,
1726 wpa_s->sme.assoc_req_ie_len,
1727 WLAN_EID_RRM_ENABLED_CAPABILITIES);
1728 if (rm_en) {
1729 /* Need to remove RM Enabled Capabilities element as
1730 * well temporarily, so that it can be placed between
1731 * RSNE and MDE. */
1732 rm_en_len = 2 + rm_en[1];
1733 rm_en_dup = os_memdup(rm_en, rm_en_len);
1734 remove_ie(wpa_s->sme.assoc_req_ie,
1735 &wpa_s->sme.assoc_req_ie_len,
1736 WLAN_EID_RRM_ENABLED_CAPABILITIES);
1737 }
1738 wpa_hexdump(MSG_DEBUG,
1739 "SME: Association Request IEs after FT IE removal",
1740 wpa_s->sme.assoc_req_ie,
1741 wpa_s->sme.assoc_req_ie_len);
1742 if (wpa_s->sme.assoc_req_ie_len + wpa_s->sme.ft_ies_len +
1743 rm_en_len > sizeof(wpa_s->sme.assoc_req_ie)) {
1744 wpa_printf(MSG_ERROR,
1745 "SME: Not enough buffer room for FT IEs in Association Request frame");
1746 os_free(rm_en_dup);
1747 return;
1748 }
1749
1750 os_memmove(wpa_s->sme.assoc_req_ie + wpa_s->sme.ft_ies_len +
1751 rm_en_len,
1752 wpa_s->sme.assoc_req_ie,
1753 wpa_s->sme.assoc_req_ie_len);
1754 pos = wpa_s->sme.ft_ies;
1755 end = pos + wpa_s->sme.ft_ies_len;
1756 wpos = wpa_s->sme.assoc_req_ie;
1757 if (*pos == WLAN_EID_RSN) {
1758 os_memcpy(wpos, pos, 2 + pos[1]);
1759 wpos += 2 + pos[1];
1760 pos += 2 + pos[1];
1761 }
1762 if (rm_en_dup) {
1763 os_memcpy(wpos, rm_en_dup, rm_en_len);
1764 wpos += rm_en_len;
1765 os_free(rm_en_dup);
1766 }
1767 os_memcpy(wpos, pos, end - pos);
1768 wpa_s->sme.assoc_req_ie_len += wpa_s->sme.ft_ies_len +
1769 rm_en_len;
1770 params.wpa_ie = wpa_s->sme.assoc_req_ie;
1771 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
1772 wpa_hexdump(MSG_DEBUG,
1773 "SME: Association Request IEs after FT override",
1774 params.wpa_ie, params.wpa_ie_len);
1775 }
1776 #endif /* CONFIG_IEEE80211R */
1777 params.mode = mode;
1778 params.mgmt_frame_protection = wpa_s->sme.mfp;
1779 params.rrm_used = wpa_s->rrm.rrm_used;
1780 if (wpa_s->sme.prev_bssid_set)
1781 params.prev_bssid = wpa_s->sme.prev_bssid;
1782
1783 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
1784 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
1785 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
1786 params.freq.freq);
1787
1788 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
1789
1790 if (params.wpa_ie == NULL ||
1791 ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
1792 < 0) {
1793 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
1794 os_memset(&elems, 0, sizeof(elems));
1795 }
1796 if (elems.rsn_ie) {
1797 params.wpa_proto = WPA_PROTO_RSN;
1798 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
1799 elems.rsn_ie_len + 2);
1800 } else if (elems.wpa_ie) {
1801 params.wpa_proto = WPA_PROTO_WPA;
1802 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
1803 elems.wpa_ie_len + 2);
1804 } else if (elems.osen) {
1805 params.wpa_proto = WPA_PROTO_OSEN;
1806 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2,
1807 elems.osen_len + 2);
1808 } else
1809 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1810 if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
1811 params.p2p = 1;
1812
1813 if (wpa_s->p2pdev->set_sta_uapsd)
1814 params.uapsd = wpa_s->p2pdev->sta_uapsd;
1815 else
1816 params.uapsd = -1;
1817
1818 if (wpa_drv_associate(wpa_s, &params) < 0) {
1819 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
1820 "driver failed");
1821 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1822 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1823 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1824 return;
1825 }
1826
1827 eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
1828 NULL);
1829
1830 #ifdef CONFIG_TESTING_OPTIONS
1831 wpabuf_free(wpa_s->last_assoc_req_wpa_ie);
1832 wpa_s->last_assoc_req_wpa_ie = NULL;
1833 if (params.wpa_ie)
1834 wpa_s->last_assoc_req_wpa_ie =
1835 wpabuf_alloc_copy(params.wpa_ie, params.wpa_ie_len);
1836 #endif /* CONFIG_TESTING_OPTIONS */
1837 }
1838
1839
1840 int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
1841 const u8 *ies, size_t ies_len)
1842 {
1843 if (md == NULL || ies == NULL) {
1844 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
1845 os_free(wpa_s->sme.ft_ies);
1846 wpa_s->sme.ft_ies = NULL;
1847 wpa_s->sme.ft_ies_len = 0;
1848 wpa_s->sme.ft_used = 0;
1849 return 0;
1850 }
1851
1852 os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
1853 wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
1854 os_free(wpa_s->sme.ft_ies);
1855 wpa_s->sme.ft_ies = os_memdup(ies, ies_len);
1856 if (wpa_s->sme.ft_ies == NULL)
1857 return -1;
1858 wpa_s->sme.ft_ies_len = ies_len;
1859 return 0;
1860 }
1861
1862
1863 static void sme_deauth(struct wpa_supplicant *wpa_s)
1864 {
1865 int bssid_changed;
1866
1867 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
1868
1869 if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
1870 WLAN_REASON_DEAUTH_LEAVING) < 0) {
1871 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
1872 "failed");
1873 }
1874 wpa_s->sme.prev_bssid_set = 0;
1875
1876 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1877 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1878 os_memset(wpa_s->bssid, 0, ETH_ALEN);
1879 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1880 if (bssid_changed)
1881 wpas_notify_bssid_changed(wpa_s);
1882 }
1883
1884
1885 void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
1886 union wpa_event_data *data)
1887 {
1888 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
1889 "status code %d", MAC2STR(wpa_s->pending_bssid),
1890 data->assoc_reject.status_code);
1891
1892 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1893
1894 #ifdef CONFIG_SAE
1895 if (wpa_s->sme.sae_pmksa_caching && wpa_s->current_ssid &&
1896 wpa_key_mgmt_sae(wpa_s->current_ssid->key_mgmt)) {
1897 wpa_dbg(wpa_s, MSG_DEBUG,
1898 "PMKSA caching attempt rejected - drop PMKSA cache entry and fall back to SAE authentication");
1899 wpa_sm_aborted_cached(wpa_s->wpa);
1900 wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid);
1901 if (wpa_s->current_bss) {
1902 struct wpa_bss *bss = wpa_s->current_bss;
1903 struct wpa_ssid *ssid = wpa_s->current_ssid;
1904
1905 wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
1906 WLAN_REASON_DEAUTH_LEAVING);
1907 wpas_connect_work_done(wpa_s);
1908 wpa_supplicant_mark_disassoc(wpa_s);
1909 wpa_supplicant_connect(wpa_s, bss, ssid);
1910 return;
1911 }
1912 }
1913 #endif /* CONFIG_SAE */
1914
1915 /*
1916 * For now, unconditionally terminate the previous authentication. In
1917 * theory, this should not be needed, but mac80211 gets quite confused
1918 * if the authentication is left pending.. Some roaming cases might
1919 * benefit from using the previous authentication, so this could be
1920 * optimized in the future.
1921 */
1922 sme_deauth(wpa_s);
1923 }
1924
1925
1926 void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
1927 union wpa_event_data *data)
1928 {
1929 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
1930 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1931 wpa_supplicant_mark_disassoc(wpa_s);
1932 }
1933
1934
1935 void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
1936 union wpa_event_data *data)
1937 {
1938 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
1939 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1940 wpa_supplicant_mark_disassoc(wpa_s);
1941 }
1942
1943
1944 void sme_event_disassoc(struct wpa_supplicant *wpa_s,
1945 struct disassoc_info *info)
1946 {
1947 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
1948 if (wpa_s->sme.prev_bssid_set) {
1949 /*
1950 * cfg80211/mac80211 can get into somewhat confused state if
1951 * the AP only disassociates us and leaves us in authenticated
1952 * state. For now, force the state to be cleared to avoid
1953 * confusing errors if we try to associate with the AP again.
1954 */
1955 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
1956 "driver state");
1957 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
1958 WLAN_REASON_DEAUTH_LEAVING);
1959 }
1960 }
1961
1962
1963 static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
1964 {
1965 struct wpa_supplicant *wpa_s = eloop_ctx;
1966 if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
1967 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
1968 sme_deauth(wpa_s);
1969 }
1970 }
1971
1972
1973 static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
1974 {
1975 struct wpa_supplicant *wpa_s = eloop_ctx;
1976 if (wpa_s->wpa_state == WPA_ASSOCIATING) {
1977 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
1978 sme_deauth(wpa_s);
1979 }
1980 }
1981
1982
1983 void sme_state_changed(struct wpa_supplicant *wpa_s)
1984 {
1985 /* Make sure timers are cleaned up appropriately. */
1986 if (wpa_s->wpa_state != WPA_ASSOCIATING)
1987 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1988 if (wpa_s->wpa_state != WPA_AUTHENTICATING)
1989 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1990 }
1991
1992
1993 void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
1994 const u8 *prev_pending_bssid)
1995 {
1996 /*
1997 * mac80211-workaround to force deauth on failed auth cmd,
1998 * requires us to remain in authenticating state to allow the
1999 * second authentication attempt to be continued properly.
2000 */
2001 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
2002 "to proceed after disconnection event");
2003 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
2004 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
2005
2006 /*
2007 * Re-arm authentication timer in case auth fails for whatever reason.
2008 */
2009 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
2010 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
2011 NULL);
2012 }
2013
2014
2015 void sme_clear_on_disassoc(struct wpa_supplicant *wpa_s)
2016 {
2017 wpa_s->sme.prev_bssid_set = 0;
2018 #ifdef CONFIG_SAE
2019 wpabuf_free(wpa_s->sme.sae_token);
2020 wpa_s->sme.sae_token = NULL;
2021 sae_clear_data(&wpa_s->sme.sae);
2022 #endif /* CONFIG_SAE */
2023 #ifdef CONFIG_IEEE80211R
2024 if (wpa_s->sme.ft_ies || wpa_s->sme.ft_used)
2025 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
2026 #endif /* CONFIG_IEEE80211R */
2027 #ifdef CONFIG_IEEE80211W
2028 sme_stop_sa_query(wpa_s);
2029 #endif /* CONFIG_IEEE80211W */
2030 }
2031
2032
2033 void sme_deinit(struct wpa_supplicant *wpa_s)
2034 {
2035 sme_clear_on_disassoc(wpa_s);
2036
2037 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
2038 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
2039 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
2040 }
2041
2042
2043 static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
2044 const u8 *chan_list, u8 num_channels,
2045 u8 num_intol)
2046 {
2047 struct ieee80211_2040_bss_coex_ie *bc_ie;
2048 struct ieee80211_2040_intol_chan_report *ic_report;
2049 struct wpabuf *buf;
2050
2051 wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR
2052 " (num_channels=%u num_intol=%u)",
2053 MAC2STR(wpa_s->bssid), num_channels, num_intol);
2054 wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels",
2055 chan_list, num_channels);
2056
2057 buf = wpabuf_alloc(2 + /* action.category + action_code */
2058 sizeof(struct ieee80211_2040_bss_coex_ie) +
2059 sizeof(struct ieee80211_2040_intol_chan_report) +
2060 num_channels);
2061 if (buf == NULL)
2062 return;
2063
2064 wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
2065 wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
2066
2067 bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
2068 bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
2069 bc_ie->length = 1;
2070 if (num_intol)
2071 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
2072
2073 if (num_channels > 0) {
2074 ic_report = wpabuf_put(buf, sizeof(*ic_report));
2075 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
2076 ic_report->length = num_channels + 1;
2077 ic_report->op_class = 0;
2078 os_memcpy(wpabuf_put(buf, num_channels), chan_list,
2079 num_channels);
2080 }
2081
2082 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
2083 wpa_s->own_addr, wpa_s->bssid,
2084 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
2085 wpa_msg(wpa_s, MSG_INFO,
2086 "SME: Failed to send 20/40 BSS Coexistence frame");
2087 }
2088
2089 wpabuf_free(buf);
2090 }
2091
2092
2093 int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
2094 {
2095 struct wpa_bss *bss;
2096 const u8 *ie;
2097 u16 ht_cap;
2098 u8 chan_list[P2P_MAX_CHANNELS], channel;
2099 u8 num_channels = 0, num_intol = 0, i;
2100
2101 if (!wpa_s->sme.sched_obss_scan)
2102 return 0;
2103
2104 wpa_s->sme.sched_obss_scan = 0;
2105 if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
2106 return 1;
2107
2108 /*
2109 * Check whether AP uses regulatory triplet or channel triplet in
2110 * country info. Right now the operating class of the BSS channel
2111 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
2112 * based on the assumption that operating class triplet is not used in
2113 * beacon frame. If the First Channel Number/Operating Extension
2114 * Identifier octet has a positive integer value of 201 or greater,
2115 * then its operating class triplet.
2116 *
2117 * TODO: If Supported Operating Classes element is present in beacon
2118 * frame, have to lookup operating class in Annex E and fill them in
2119 * 2040 coex frame.
2120 */
2121 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
2122 if (ie && (ie[1] >= 6) && (ie[5] >= 201))
2123 return 1;
2124
2125 os_memset(chan_list, 0, sizeof(chan_list));
2126
2127 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2128 /* Skip other band bss */
2129 enum hostapd_hw_mode mode;
2130 mode = ieee80211_freq_to_chan(bss->freq, &channel);
2131 if (mode != HOSTAPD_MODE_IEEE80211G &&
2132 mode != HOSTAPD_MODE_IEEE80211B)
2133 continue;
2134
2135 ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
2136 ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
2137 wpa_printf(MSG_DEBUG, "SME OBSS scan BSS " MACSTR
2138 " freq=%u chan=%u ht_cap=0x%x",
2139 MAC2STR(bss->bssid), bss->freq, channel, ht_cap);
2140
2141 if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
2142 if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
2143 num_intol++;
2144
2145 /* Check whether the channel is already considered */
2146 for (i = 0; i < num_channels; i++) {
2147 if (channel == chan_list[i])
2148 break;
2149 }
2150 if (i != num_channels)
2151 continue;
2152
2153 chan_list[num_channels++] = channel;
2154 }
2155 }
2156
2157 sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
2158 return 1;
2159 }
2160
2161
2162 static void wpa_obss_scan_freqs_list(struct wpa_supplicant *wpa_s,
2163 struct wpa_driver_scan_params *params)
2164 {
2165 /* Include only affected channels */
2166 struct hostapd_hw_modes *mode;
2167 int count, i;
2168 int start, end;
2169
2170 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
2171 HOSTAPD_MODE_IEEE80211G);
2172 if (mode == NULL) {
2173 /* No channels supported in this band - use empty list */
2174 params->freqs = os_zalloc(sizeof(int));
2175 return;
2176 }
2177
2178 if (wpa_s->sme.ht_sec_chan == HT_SEC_CHAN_UNKNOWN &&
2179 wpa_s->current_bss) {
2180 const u8 *ie;
2181
2182 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_OPERATION);
2183 if (ie && ie[1] >= 2) {
2184 u8 o;
2185
2186 o = ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK;
2187 if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
2188 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_ABOVE;
2189 else if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
2190 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_BELOW;
2191 }
2192 }
2193
2194 start = wpa_s->assoc_freq - 10;
2195 end = wpa_s->assoc_freq + 10;
2196 switch (wpa_s->sme.ht_sec_chan) {
2197 case HT_SEC_CHAN_UNKNOWN:
2198 /* HT40+ possible on channels 1..9 */
2199 if (wpa_s->assoc_freq <= 2452)
2200 start -= 20;
2201 /* HT40- possible on channels 5-13 */
2202 if (wpa_s->assoc_freq >= 2432)
2203 end += 20;
2204 break;
2205 case HT_SEC_CHAN_ABOVE:
2206 end += 20;
2207 break;
2208 case HT_SEC_CHAN_BELOW:
2209 start -= 20;
2210 break;
2211 }
2212 wpa_printf(MSG_DEBUG,
2213 "OBSS: assoc_freq %d possible affected range %d-%d",
2214 wpa_s->assoc_freq, start, end);
2215
2216 params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
2217 if (params->freqs == NULL)
2218 return;
2219 for (count = 0, i = 0; i < mode->num_channels; i++) {
2220 int freq;
2221
2222 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
2223 continue;
2224 freq = mode->channels[i].freq;
2225 if (freq - 10 >= end || freq + 10 <= start)
2226 continue; /* not affected */
2227 params->freqs[count++] = freq;
2228 }
2229 }
2230
2231
2232 static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
2233 {
2234 struct wpa_supplicant *wpa_s = eloop_ctx;
2235 struct wpa_driver_scan_params params;
2236
2237 if (!wpa_s->current_bss) {
2238 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
2239 return;
2240 }
2241
2242 os_memset(&params, 0, sizeof(params));
2243 wpa_obss_scan_freqs_list(wpa_s, &params);
2244 params.low_priority = 1;
2245 wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
2246
2247 if (wpa_supplicant_trigger_scan(wpa_s, &params))
2248 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
2249 else
2250 wpa_s->sme.sched_obss_scan = 1;
2251 os_free(params.freqs);
2252
2253 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
2254 sme_obss_scan_timeout, wpa_s, NULL);
2255 }
2256
2257
2258 void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
2259 {
2260 const u8 *ie;
2261 struct wpa_bss *bss = wpa_s->current_bss;
2262 struct wpa_ssid *ssid = wpa_s->current_ssid;
2263 struct hostapd_hw_modes *hw_mode = NULL;
2264 int i;
2265
2266 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
2267 wpa_s->sme.sched_obss_scan = 0;
2268 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_UNKNOWN;
2269 if (!enable)
2270 return;
2271
2272 /*
2273 * Schedule OBSS scan if driver is using station SME in wpa_supplicant
2274 * or it expects OBSS scan to be performed by wpa_supplicant.
2275 */
2276 if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
2277 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
2278 ssid == NULL || ssid->mode != WPAS_MODE_INFRA)
2279 return;
2280
2281 if (!wpa_s->hw.modes)
2282 return;
2283
2284 /* only HT caps in 11g mode are relevant */
2285 for (i = 0; i < wpa_s->hw.num_modes; i++) {
2286 hw_mode = &wpa_s->hw.modes[i];
2287 if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
2288 break;
2289 }
2290
2291 /* Driver does not support HT40 for 11g or doesn't have 11g. */
2292 if (i == wpa_s->hw.num_modes || !hw_mode ||
2293 !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
2294 return;
2295
2296 if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
2297 return; /* Not associated on 2.4 GHz band */
2298
2299 /* Check whether AP supports HT40 */
2300 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
2301 if (!ie || ie[1] < 2 ||
2302 !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
2303 return; /* AP does not support HT40 */
2304
2305 ie = wpa_bss_get_ie(wpa_s->current_bss,
2306 WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
2307 if (!ie || ie[1] < 14)
2308 return; /* AP does not request OBSS scans */
2309
2310 wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
2311 if (wpa_s->sme.obss_scan_int < 10) {
2312 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
2313 "replaced with the minimum 10 sec",
2314 wpa_s->sme.obss_scan_int);
2315 wpa_s->sme.obss_scan_int = 10;
2316 }
2317 wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
2318 wpa_s->sme.obss_scan_int);
2319 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
2320 sme_obss_scan_timeout, wpa_s, NULL);
2321 }
2322
2323
2324 #ifdef CONFIG_IEEE80211W
2325
2326 static const unsigned int sa_query_max_timeout = 1000;
2327 static const unsigned int sa_query_retry_timeout = 201;
2328 static const unsigned int sa_query_ch_switch_max_delay = 5000; /* in usec */
2329
2330 static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
2331 {
2332 u32 tu;
2333 struct os_reltime now, passed;
2334 os_get_reltime(&now);
2335 os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed);
2336 tu = (passed.sec * 1000000 + passed.usec) / 1024;
2337 if (sa_query_max_timeout < tu) {
2338 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
2339 sme_stop_sa_query(wpa_s);
2340 wpa_supplicant_deauthenticate(
2341 wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
2342 return 1;
2343 }
2344
2345 return 0;
2346 }
2347
2348
2349 static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
2350 const u8 *trans_id)
2351 {
2352 u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN + OCV_OCI_EXTENDED_LEN];
2353 u8 req_len = 2 + WLAN_SA_QUERY_TR_ID_LEN;
2354
2355 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
2356 MACSTR, MAC2STR(wpa_s->bssid));
2357 wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
2358 trans_id, WLAN_SA_QUERY_TR_ID_LEN);
2359 req[0] = WLAN_ACTION_SA_QUERY;
2360 req[1] = WLAN_SA_QUERY_REQUEST;
2361 os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
2362
2363 #ifdef CONFIG_OCV
2364 if (wpa_sm_ocv_enabled(wpa_s->wpa)) {
2365 struct wpa_channel_info ci;
2366
2367 if (wpa_drv_channel_info(wpa_s, &ci) != 0) {
2368 wpa_printf(MSG_WARNING,
2369 "Failed to get channel info for OCI element in SA Query Request frame");
2370 return;
2371 }
2372
2373 if (ocv_insert_extended_oci(&ci, req + req_len) < 0)
2374 return;
2375
2376 req_len += OCV_OCI_EXTENDED_LEN;
2377 }
2378 #endif /* CONFIG_OCV */
2379
2380 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
2381 wpa_s->own_addr, wpa_s->bssid,
2382 req, req_len, 0) < 0)
2383 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
2384 "Request");
2385 }
2386
2387
2388 static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
2389 {
2390 struct wpa_supplicant *wpa_s = eloop_ctx;
2391 unsigned int timeout, sec, usec;
2392 u8 *trans_id, *nbuf;
2393
2394 if (wpa_s->sme.sa_query_count > 0 &&
2395 sme_check_sa_query_timeout(wpa_s))
2396 return;
2397
2398 nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
2399 wpa_s->sme.sa_query_count + 1,
2400 WLAN_SA_QUERY_TR_ID_LEN);
2401 if (nbuf == NULL) {
2402 sme_stop_sa_query(wpa_s);
2403 return;
2404 }
2405 if (wpa_s->sme.sa_query_count == 0) {
2406 /* Starting a new SA Query procedure */
2407 os_get_reltime(&wpa_s->sme.sa_query_start);
2408 }
2409 trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
2410 wpa_s->sme.sa_query_trans_id = nbuf;
2411 wpa_s->sme.sa_query_count++;
2412
2413 if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) {
2414 wpa_printf(MSG_DEBUG, "Could not generate SA Query ID");
2415 sme_stop_sa_query(wpa_s);
2416 return;
2417 }
2418
2419 timeout = sa_query_retry_timeout;
2420 sec = ((timeout / 1000) * 1024) / 1000;
2421 usec = (timeout % 1000) * 1024;
2422 eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
2423
2424 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
2425 wpa_s->sme.sa_query_count);
2426
2427 sme_send_sa_query_req(wpa_s, trans_id);
2428 }
2429
2430
2431 static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
2432 {
2433 sme_sa_query_timer(wpa_s, NULL);
2434 }
2435
2436
2437 static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
2438 {
2439 if (wpa_s->sme.sa_query_trans_id)
2440 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Stop SA Query");
2441 eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
2442 os_free(wpa_s->sme.sa_query_trans_id);
2443 wpa_s->sme.sa_query_trans_id = NULL;
2444 wpa_s->sme.sa_query_count = 0;
2445 }
2446
2447
2448 void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
2449 const u8 *da, u16 reason_code)
2450 {
2451 struct wpa_ssid *ssid;
2452 struct os_reltime now;
2453
2454 if (wpa_s->wpa_state != WPA_COMPLETED)
2455 return;
2456 ssid = wpa_s->current_ssid;
2457 if (wpas_get_ssid_pmf(wpa_s, ssid) == NO_MGMT_FRAME_PROTECTION)
2458 return;
2459 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
2460 return;
2461 if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
2462 reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
2463 return;
2464 if (wpa_s->sme.sa_query_count > 0)
2465 return;
2466
2467 os_get_reltime(&now);
2468 if (wpa_s->sme.last_unprot_disconnect.sec &&
2469 !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10))
2470 return; /* limit SA Query procedure frequency */
2471 wpa_s->sme.last_unprot_disconnect = now;
2472
2473 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
2474 "possible AP/STA state mismatch - trigger SA Query");
2475 sme_start_sa_query(wpa_s);
2476 }
2477
2478
2479 void sme_event_ch_switch(struct wpa_supplicant *wpa_s)
2480 {
2481 unsigned int usec;
2482 u32 _rand;
2483
2484 if (wpa_s->wpa_state != WPA_COMPLETED ||
2485 !wpa_sm_ocv_enabled(wpa_s->wpa))
2486 return;
2487
2488 wpa_dbg(wpa_s, MSG_DEBUG,
2489 "SME: Channel switch completed - trigger new SA Query to verify new operating channel");
2490 sme_stop_sa_query(wpa_s);
2491
2492 if (os_get_random((u8 *) &_rand, sizeof(_rand)) < 0)
2493 _rand = os_random();
2494 usec = _rand % (sa_query_ch_switch_max_delay + 1);
2495 eloop_register_timeout(0, usec, sme_sa_query_timer, wpa_s, NULL);
2496 }
2497
2498
2499 static void sme_process_sa_query_request(struct wpa_supplicant *wpa_s,
2500 const u8 *sa, const u8 *data,
2501 size_t len)
2502 {
2503 u8 resp[2 + WLAN_SA_QUERY_TR_ID_LEN + OCV_OCI_EXTENDED_LEN];
2504 u8 resp_len = 2 + WLAN_SA_QUERY_TR_ID_LEN;
2505
2506 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Response to "
2507 MACSTR, MAC2STR(wpa_s->bssid));
2508
2509 resp[0] = WLAN_ACTION_SA_QUERY;
2510 resp[1] = WLAN_SA_QUERY_RESPONSE;
2511 os_memcpy(resp + 2, data + 1, WLAN_SA_QUERY_TR_ID_LEN);
2512
2513 #ifdef CONFIG_OCV
2514 if (wpa_sm_ocv_enabled(wpa_s->wpa)) {
2515 struct wpa_channel_info ci;
2516
2517 if (wpa_drv_channel_info(wpa_s, &ci) != 0) {
2518 wpa_printf(MSG_WARNING,
2519 "Failed to get channel info for OCI element in SA Query Response frame");
2520 return;
2521 }
2522
2523 if (ocv_insert_extended_oci(&ci, resp + resp_len) < 0)
2524 return;
2525
2526 resp_len += OCV_OCI_EXTENDED_LEN;
2527 }
2528 #endif /* CONFIG_OCV */
2529
2530 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
2531 wpa_s->own_addr, wpa_s->bssid,
2532 resp, resp_len, 0) < 0)
2533 wpa_msg(wpa_s, MSG_INFO,
2534 "SME: Failed to send SA Query Response");
2535 }
2536
2537
2538 static void sme_process_sa_query_response(struct wpa_supplicant *wpa_s,
2539 const u8 *sa, const u8 *data,
2540 size_t len)
2541 {
2542 int i;
2543
2544 if (!wpa_s->sme.sa_query_trans_id)
2545 return;
2546
2547 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
2548 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
2549
2550 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
2551 return;
2552
2553 for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
2554 if (os_memcmp(wpa_s->sme.sa_query_trans_id +
2555 i * WLAN_SA_QUERY_TR_ID_LEN,
2556 data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
2557 break;
2558 }
2559
2560 if (i >= wpa_s->sme.sa_query_count) {
2561 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
2562 "transaction identifier found");
2563 return;
2564 }
2565
2566 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
2567 "from " MACSTR, MAC2STR(sa));
2568 sme_stop_sa_query(wpa_s);
2569 }
2570
2571
2572 void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
2573 const u8 *data, size_t len)
2574 {
2575 if (len < 1 + WLAN_SA_QUERY_TR_ID_LEN)
2576 return;
2577
2578 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query frame from "
2579 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
2580
2581 #ifdef CONFIG_OCV
2582 if (wpa_sm_ocv_enabled(wpa_s->wpa)) {
2583 struct ieee802_11_elems elems;
2584 struct wpa_channel_info ci;
2585
2586 if (ieee802_11_parse_elems(data + 1 + WLAN_SA_QUERY_TR_ID_LEN,
2587 len - 1 - WLAN_SA_QUERY_TR_ID_LEN,
2588 &elems, 1) == ParseFailed) {
2589 wpa_printf(MSG_DEBUG,
2590 "SA Query: Failed to parse elements");
2591 return;
2592 }
2593
2594 if (wpa_drv_channel_info(wpa_s, &ci) != 0) {
2595 wpa_printf(MSG_WARNING,
2596 "Failed to get channel info to validate received OCI in SA Query Action frame");
2597 return;
2598 }
2599
2600 if (ocv_verify_tx_params(elems.oci, elems.oci_len, &ci,
2601 channel_width_to_int(ci.chanwidth),
2602 ci.seg1_idx) != 0) {
2603 wpa_printf(MSG_WARNING, "%s", ocv_errorstr);
2604 return;
2605 }
2606 }
2607 #endif /* CONFIG_OCV */
2608
2609 if (data[0] == WLAN_SA_QUERY_REQUEST)
2610 sme_process_sa_query_request(wpa_s, sa, data, len);
2611 else if (data[0] == WLAN_SA_QUERY_RESPONSE)
2612 sme_process_sa_query_response(wpa_s, sa, data, len);
2613 }
2614
2615 #endif /* CONFIG_IEEE80211W */
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