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Fix signal_poll based roaming skip
[thirdparty/hostap.git] / wpa_supplicant / sme.c
1 /*
2 * wpa_supplicant - SME
3 * Copyright (c) 2009-2014, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "includes.h"
10
11 #include "common.h"
12 #include "utils/eloop.h"
13 #include "common/ieee802_11_defs.h"
14 #include "common/ieee802_11_common.h"
15 #include "common/ocv.h"
16 #include "common/hw_features_common.h"
17 #include "eapol_supp/eapol_supp_sm.h"
18 #include "common/wpa_common.h"
19 #include "common/sae.h"
20 #include "common/dpp.h"
21 #include "rsn_supp/wpa.h"
22 #include "rsn_supp/pmksa_cache.h"
23 #include "config.h"
24 #include "wpa_supplicant_i.h"
25 #include "driver_i.h"
26 #include "wpas_glue.h"
27 #include "wps_supplicant.h"
28 #include "p2p_supplicant.h"
29 #include "notify.h"
30 #include "bss.h"
31 #include "scan.h"
32 #include "sme.h"
33 #include "hs20_supplicant.h"
34
35 #define SME_AUTH_TIMEOUT 5
36 #define SME_ASSOC_TIMEOUT 5
37
38 static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx);
39 static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx);
40 static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx);
41 static void sme_stop_sa_query(struct wpa_supplicant *wpa_s);
42
43
44 #ifdef CONFIG_SAE
45
46 static int index_within_array(const int *array, int idx)
47 {
48 int i;
49 for (i = 0; i < idx; i++) {
50 if (array[i] <= 0)
51 return 0;
52 }
53 return 1;
54 }
55
56
57 static int sme_set_sae_group(struct wpa_supplicant *wpa_s)
58 {
59 int *groups = wpa_s->conf->sae_groups;
60 int default_groups[] = { 19, 20, 21, 0 };
61
62 if (!groups || groups[0] <= 0)
63 groups = default_groups;
64
65 /* Configuration may have changed, so validate current index */
66 if (!index_within_array(groups, wpa_s->sme.sae_group_index))
67 return -1;
68
69 for (;;) {
70 int group = groups[wpa_s->sme.sae_group_index];
71 if (group <= 0)
72 break;
73 if (sae_set_group(&wpa_s->sme.sae, group) == 0) {
74 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected SAE group %d",
75 wpa_s->sme.sae.group);
76 return 0;
77 }
78 wpa_s->sme.sae_group_index++;
79 }
80
81 return -1;
82 }
83
84
85 static struct wpabuf * sme_auth_build_sae_commit(struct wpa_supplicant *wpa_s,
86 struct wpa_ssid *ssid,
87 const u8 *bssid, int external,
88 int reuse, int *ret_use_pt)
89 {
90 struct wpabuf *buf;
91 size_t len;
92 const char *password;
93 struct wpa_bss *bss;
94 int use_pt = 0;
95
96 if (ret_use_pt)
97 *ret_use_pt = 0;
98
99 #ifdef CONFIG_TESTING_OPTIONS
100 if (wpa_s->sae_commit_override) {
101 wpa_printf(MSG_DEBUG, "SAE: TESTING - commit override");
102 buf = wpabuf_alloc(4 + wpabuf_len(wpa_s->sae_commit_override));
103 if (!buf)
104 return NULL;
105 if (!external) {
106 wpabuf_put_le16(buf, 1); /* Transaction seq# */
107 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
108 }
109 wpabuf_put_buf(buf, wpa_s->sae_commit_override);
110 return buf;
111 }
112 #endif /* CONFIG_TESTING_OPTIONS */
113
114 password = ssid->sae_password;
115 if (!password)
116 password = ssid->passphrase;
117 if (!password) {
118 wpa_printf(MSG_DEBUG, "SAE: No password available");
119 return NULL;
120 }
121
122 if (reuse && wpa_s->sme.sae.tmp &&
123 os_memcmp(bssid, wpa_s->sme.sae.tmp->bssid, ETH_ALEN) == 0) {
124 wpa_printf(MSG_DEBUG,
125 "SAE: Reuse previously generated PWE on a retry with the same AP");
126 use_pt = wpa_s->sme.sae.tmp->h2e;
127 goto reuse_data;
128 }
129 if (sme_set_sae_group(wpa_s) < 0) {
130 wpa_printf(MSG_DEBUG, "SAE: Failed to select group");
131 return NULL;
132 }
133
134 if (wpa_s->conf->sae_pwe == 1 || wpa_s->conf->sae_pwe == 2) {
135 bss = wpa_bss_get_bssid_latest(wpa_s, bssid);
136 if (bss) {
137 const u8 *rsnxe;
138
139 rsnxe = wpa_bss_get_ie(bss, WLAN_EID_RSNX);
140 if (rsnxe && rsnxe[1] >= 1)
141 use_pt = !!(rsnxe[2] &
142 BIT(WLAN_RSNX_CAPAB_SAE_H2E));
143 }
144
145 if (wpa_s->conf->sae_pwe == 1 && !use_pt) {
146 wpa_printf(MSG_DEBUG,
147 "SAE: Cannot use H2E with the selected AP");
148 return NULL;
149 }
150 }
151
152 if (use_pt &&
153 sae_prepare_commit_pt(&wpa_s->sme.sae, ssid->pt,
154 wpa_s->own_addr, bssid,
155 wpa_s->sme.sae_rejected_groups) < 0)
156 return NULL;
157 if (!use_pt &&
158 sae_prepare_commit(wpa_s->own_addr, bssid,
159 (u8 *) password, os_strlen(password),
160 ssid->sae_password_id,
161 &wpa_s->sme.sae) < 0) {
162 wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE");
163 return NULL;
164 }
165 if (wpa_s->sme.sae.tmp)
166 os_memcpy(wpa_s->sme.sae.tmp->bssid, bssid, ETH_ALEN);
167
168 reuse_data:
169 len = wpa_s->sme.sae_token ? wpabuf_len(wpa_s->sme.sae_token) : 0;
170 if (ssid->sae_password_id)
171 len += 4 + os_strlen(ssid->sae_password_id);
172 buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + len);
173 if (buf == NULL)
174 return NULL;
175 if (!external) {
176 wpabuf_put_le16(buf, 1); /* Transaction seq# */
177 wpabuf_put_le16(buf, use_pt ? WLAN_STATUS_SAE_HASH_TO_ELEMENT :
178 WLAN_STATUS_SUCCESS);
179 }
180 sae_write_commit(&wpa_s->sme.sae, buf, wpa_s->sme.sae_token,
181 ssid->sae_password_id);
182 if (ret_use_pt)
183 *ret_use_pt = use_pt;
184
185 return buf;
186 }
187
188
189 static struct wpabuf * sme_auth_build_sae_confirm(struct wpa_supplicant *wpa_s,
190 int external)
191 {
192 struct wpabuf *buf;
193
194 buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN);
195 if (buf == NULL)
196 return NULL;
197
198 if (!external) {
199 wpabuf_put_le16(buf, 2); /* Transaction seq# */
200 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
201 }
202 sae_write_confirm(&wpa_s->sme.sae, buf);
203
204 return buf;
205 }
206
207 #endif /* CONFIG_SAE */
208
209
210 /**
211 * sme_auth_handle_rrm - Handle RRM aspects of current authentication attempt
212 * @wpa_s: Pointer to wpa_supplicant data
213 * @bss: Pointer to the bss which is the target of authentication attempt
214 */
215 static void sme_auth_handle_rrm(struct wpa_supplicant *wpa_s,
216 struct wpa_bss *bss)
217 {
218 const u8 rrm_ie_len = 5;
219 u8 *pos;
220 const u8 *rrm_ie;
221
222 wpa_s->rrm.rrm_used = 0;
223
224 wpa_printf(MSG_DEBUG,
225 "RRM: Determining whether RRM can be used - device support: 0x%x",
226 wpa_s->drv_rrm_flags);
227
228 rrm_ie = wpa_bss_get_ie(bss, WLAN_EID_RRM_ENABLED_CAPABILITIES);
229 if (!rrm_ie || !(bss->caps & IEEE80211_CAP_RRM)) {
230 wpa_printf(MSG_DEBUG, "RRM: No RRM in network");
231 return;
232 }
233
234 if (!((wpa_s->drv_rrm_flags &
235 WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) &&
236 (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET)) &&
237 !(wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_SUPPORT_RRM)) {
238 wpa_printf(MSG_DEBUG,
239 "RRM: Insufficient RRM support in driver - do not use RRM");
240 return;
241 }
242
243 if (sizeof(wpa_s->sme.assoc_req_ie) <
244 wpa_s->sme.assoc_req_ie_len + rrm_ie_len + 2) {
245 wpa_printf(MSG_INFO,
246 "RRM: Unable to use RRM, no room for RRM IE");
247 return;
248 }
249
250 wpa_printf(MSG_DEBUG, "RRM: Adding RRM IE to Association Request");
251 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
252 os_memset(pos, 0, 2 + rrm_ie_len);
253 *pos++ = WLAN_EID_RRM_ENABLED_CAPABILITIES;
254 *pos++ = rrm_ie_len;
255
256 /* Set supported capabilites flags */
257 if (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION)
258 *pos |= WLAN_RRM_CAPS_LINK_MEASUREMENT;
259
260 *pos |= WLAN_RRM_CAPS_BEACON_REPORT_PASSIVE |
261 WLAN_RRM_CAPS_BEACON_REPORT_ACTIVE |
262 WLAN_RRM_CAPS_BEACON_REPORT_TABLE;
263
264 if (wpa_s->lci)
265 pos[1] |= WLAN_RRM_CAPS_LCI_MEASUREMENT;
266
267 wpa_s->sme.assoc_req_ie_len += rrm_ie_len + 2;
268 wpa_s->rrm.rrm_used = 1;
269 }
270
271
272 static void sme_send_authentication(struct wpa_supplicant *wpa_s,
273 struct wpa_bss *bss, struct wpa_ssid *ssid,
274 int start)
275 {
276 struct wpa_driver_auth_params params;
277 struct wpa_ssid *old_ssid;
278 #ifdef CONFIG_IEEE80211R
279 const u8 *ie;
280 #endif /* CONFIG_IEEE80211R */
281 #if defined(CONFIG_IEEE80211R) || defined(CONFIG_FILS)
282 const u8 *md = NULL;
283 #endif /* CONFIG_IEEE80211R || CONFIG_FILS */
284 int i, bssid_changed;
285 struct wpabuf *resp = NULL;
286 u8 ext_capab[18];
287 int ext_capab_len;
288 int skip_auth;
289 u8 *wpa_ie;
290 size_t wpa_ie_len;
291 #ifdef CONFIG_MBO
292 const u8 *mbo_ie;
293 #endif /* CONFIG_MBO */
294
295 if (bss == NULL) {
296 wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for "
297 "the network");
298 wpas_connect_work_done(wpa_s);
299 return;
300 }
301
302 skip_auth = wpa_s->conf->reassoc_same_bss_optim &&
303 wpa_s->reassoc_same_bss;
304 wpa_s->current_bss = bss;
305
306 os_memset(&params, 0, sizeof(params));
307 wpa_s->reassociate = 0;
308
309 params.freq = bss->freq;
310 params.bssid = bss->bssid;
311 params.ssid = bss->ssid;
312 params.ssid_len = bss->ssid_len;
313 params.p2p = ssid->p2p_group;
314
315 if (wpa_s->sme.ssid_len != params.ssid_len ||
316 os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
317 wpa_s->sme.prev_bssid_set = 0;
318
319 wpa_s->sme.freq = params.freq;
320 os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
321 wpa_s->sme.ssid_len = params.ssid_len;
322
323 params.auth_alg = WPA_AUTH_ALG_OPEN;
324 #ifdef IEEE8021X_EAPOL
325 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
326 if (ssid->leap) {
327 if (ssid->non_leap == 0)
328 params.auth_alg = WPA_AUTH_ALG_LEAP;
329 else
330 params.auth_alg |= WPA_AUTH_ALG_LEAP;
331 }
332 }
333 #endif /* IEEE8021X_EAPOL */
334 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
335 params.auth_alg);
336 if (ssid->auth_alg) {
337 params.auth_alg = ssid->auth_alg;
338 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
339 "0x%x", params.auth_alg);
340 }
341 #ifdef CONFIG_SAE
342 wpa_s->sme.sae_pmksa_caching = 0;
343 if (wpa_key_mgmt_sae(ssid->key_mgmt)) {
344 const u8 *rsn;
345 struct wpa_ie_data ied;
346
347 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
348 if (!rsn) {
349 wpa_dbg(wpa_s, MSG_DEBUG,
350 "SAE enabled, but target BSS does not advertise RSN");
351 #ifdef CONFIG_DPP
352 } else if (wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 &&
353 (ssid->key_mgmt & WPA_KEY_MGMT_DPP) &&
354 (ied.key_mgmt & WPA_KEY_MGMT_DPP)) {
355 wpa_dbg(wpa_s, MSG_DEBUG, "Prefer DPP over SAE when both are enabled");
356 #endif /* CONFIG_DPP */
357 } else if (wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 &&
358 wpa_key_mgmt_sae(ied.key_mgmt)) {
359 wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg");
360 params.auth_alg = WPA_AUTH_ALG_SAE;
361 } else {
362 wpa_dbg(wpa_s, MSG_DEBUG,
363 "SAE enabled, but target BSS does not advertise SAE AKM for RSN");
364 }
365 }
366 #endif /* CONFIG_SAE */
367
368 for (i = 0; i < NUM_WEP_KEYS; i++) {
369 if (ssid->wep_key_len[i])
370 params.wep_key[i] = ssid->wep_key[i];
371 params.wep_key_len[i] = ssid->wep_key_len[i];
372 }
373 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
374
375 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
376 os_memset(wpa_s->bssid, 0, ETH_ALEN);
377 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
378 if (bssid_changed)
379 wpas_notify_bssid_changed(wpa_s);
380
381 if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
382 wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
383 wpa_key_mgmt_wpa(ssid->key_mgmt)) {
384 int try_opportunistic;
385 const u8 *cache_id = NULL;
386
387 try_opportunistic = (ssid->proactive_key_caching < 0 ?
388 wpa_s->conf->okc :
389 ssid->proactive_key_caching) &&
390 (ssid->proto & WPA_PROTO_RSN);
391 #ifdef CONFIG_FILS
392 if (wpa_key_mgmt_fils(ssid->key_mgmt))
393 cache_id = wpa_bss_get_fils_cache_id(bss);
394 #endif /* CONFIG_FILS */
395 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
396 wpa_s->current_ssid,
397 try_opportunistic, cache_id,
398 0) == 0)
399 eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
400 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
401 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
402 wpa_s->sme.assoc_req_ie,
403 &wpa_s->sme.assoc_req_ie_len)) {
404 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
405 "key management and encryption suites");
406 wpas_connect_work_done(wpa_s);
407 return;
408 }
409 #ifdef CONFIG_HS20
410 } else if (wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE) &&
411 (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)) {
412 /* No PMKSA caching, but otherwise similar to RSN/WPA */
413 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
414 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
415 wpa_s->sme.assoc_req_ie,
416 &wpa_s->sme.assoc_req_ie_len)) {
417 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
418 "key management and encryption suites");
419 wpas_connect_work_done(wpa_s);
420 return;
421 }
422 #endif /* CONFIG_HS20 */
423 } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
424 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) {
425 /*
426 * Both WPA and non-WPA IEEE 802.1X enabled in configuration -
427 * use non-WPA since the scan results did not indicate that the
428 * AP is using WPA or WPA2.
429 */
430 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
431 wpa_s->sme.assoc_req_ie_len = 0;
432 } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
433 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
434 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
435 wpa_s->sme.assoc_req_ie,
436 &wpa_s->sme.assoc_req_ie_len)) {
437 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
438 "key management and encryption suites (no "
439 "scan results)");
440 wpas_connect_work_done(wpa_s);
441 return;
442 }
443 #ifdef CONFIG_WPS
444 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
445 struct wpabuf *wps_ie;
446 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
447 if (wps_ie && wpabuf_len(wps_ie) <=
448 sizeof(wpa_s->sme.assoc_req_ie)) {
449 wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
450 os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
451 wpa_s->sme.assoc_req_ie_len);
452 } else
453 wpa_s->sme.assoc_req_ie_len = 0;
454 wpabuf_free(wps_ie);
455 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
456 #endif /* CONFIG_WPS */
457 } else {
458 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
459 wpa_s->sme.assoc_req_ie_len = 0;
460 }
461
462 /* In case the WPA vendor IE is used, it should be placed after all the
463 * non-vendor IEs, as the lower layer expects the IEs to be ordered as
464 * defined in the standard. Store the WPA IE so it can later be
465 * inserted at the correct location.
466 */
467 wpa_ie = NULL;
468 wpa_ie_len = 0;
469 if (wpa_s->wpa_proto == WPA_PROTO_WPA) {
470 wpa_ie = os_memdup(wpa_s->sme.assoc_req_ie,
471 wpa_s->sme.assoc_req_ie_len);
472 if (wpa_ie) {
473 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Storing WPA IE");
474
475 wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
476 wpa_s->sme.assoc_req_ie_len = 0;
477 } else {
478 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed copy WPA IE");
479 wpas_connect_work_done(wpa_s);
480 return;
481 }
482 }
483
484 #ifdef CONFIG_IEEE80211R
485 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
486 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
487 md = ie + 2;
488 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
489 if (md && (!wpa_key_mgmt_ft(ssid->key_mgmt) ||
490 !wpa_key_mgmt_ft(wpa_s->key_mgmt)))
491 md = NULL;
492 if (md) {
493 /* Prepare for the next transition */
494 wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
495 }
496
497 if (md) {
498 wpa_dbg(wpa_s, MSG_DEBUG, "SME: FT mobility domain %02x%02x",
499 md[0], md[1]);
500
501 if (wpa_s->sme.assoc_req_ie_len + 5 <
502 sizeof(wpa_s->sme.assoc_req_ie)) {
503 struct rsn_mdie *mdie;
504 u8 *pos = wpa_s->sme.assoc_req_ie +
505 wpa_s->sme.assoc_req_ie_len;
506 *pos++ = WLAN_EID_MOBILITY_DOMAIN;
507 *pos++ = sizeof(*mdie);
508 mdie = (struct rsn_mdie *) pos;
509 os_memcpy(mdie->mobility_domain, md,
510 MOBILITY_DOMAIN_ID_LEN);
511 mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
512 wpa_s->sme.assoc_req_ie_len += 5;
513 }
514
515 if (wpa_s->sme.prev_bssid_set && wpa_s->sme.ft_used &&
516 os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
517 wpa_sm_has_ptk(wpa_s->wpa)) {
518 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT "
519 "over-the-air");
520 params.auth_alg = WPA_AUTH_ALG_FT;
521 params.ie = wpa_s->sme.ft_ies;
522 params.ie_len = wpa_s->sme.ft_ies_len;
523 }
524 }
525 #endif /* CONFIG_IEEE80211R */
526
527 wpa_s->sme.mfp = wpas_get_ssid_pmf(wpa_s, ssid);
528 if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) {
529 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
530 struct wpa_ie_data _ie;
531 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
532 _ie.capabilities &
533 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
534 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports "
535 "MFP: require MFP");
536 wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
537 }
538 }
539
540 #ifdef CONFIG_P2P
541 if (wpa_s->global->p2p) {
542 u8 *pos;
543 size_t len;
544 int res;
545 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
546 len = sizeof(wpa_s->sme.assoc_req_ie) -
547 wpa_s->sme.assoc_req_ie_len;
548 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
549 ssid->p2p_group);
550 if (res >= 0)
551 wpa_s->sme.assoc_req_ie_len += res;
552 }
553 #endif /* CONFIG_P2P */
554
555 #ifdef CONFIG_FST
556 if (wpa_s->fst_ies) {
557 int fst_ies_len = wpabuf_len(wpa_s->fst_ies);
558
559 if (wpa_s->sme.assoc_req_ie_len + fst_ies_len <=
560 sizeof(wpa_s->sme.assoc_req_ie)) {
561 os_memcpy(wpa_s->sme.assoc_req_ie +
562 wpa_s->sme.assoc_req_ie_len,
563 wpabuf_head(wpa_s->fst_ies),
564 fst_ies_len);
565 wpa_s->sme.assoc_req_ie_len += fst_ies_len;
566 }
567 }
568 #endif /* CONFIG_FST */
569
570 sme_auth_handle_rrm(wpa_s, bss);
571
572 wpa_s->sme.assoc_req_ie_len += wpas_supp_op_class_ie(
573 wpa_s, ssid, bss->freq,
574 wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
575 sizeof(wpa_s->sme.assoc_req_ie) - wpa_s->sme.assoc_req_ie_len);
576
577 if (params.p2p)
578 wpa_drv_get_ext_capa(wpa_s, WPA_IF_P2P_CLIENT);
579 else
580 wpa_drv_get_ext_capa(wpa_s, WPA_IF_STATION);
581
582 ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab,
583 sizeof(ext_capab));
584 if (ext_capab_len > 0) {
585 u8 *pos = wpa_s->sme.assoc_req_ie;
586 if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
587 pos += 2 + pos[1];
588 os_memmove(pos + ext_capab_len, pos,
589 wpa_s->sme.assoc_req_ie_len -
590 (pos - wpa_s->sme.assoc_req_ie));
591 wpa_s->sme.assoc_req_ie_len += ext_capab_len;
592 os_memcpy(pos, ext_capab, ext_capab_len);
593 }
594
595 #ifdef CONFIG_TESTING_OPTIONS
596 if (wpa_s->rsnxe_override_assoc &&
597 wpabuf_len(wpa_s->rsnxe_override_assoc) <=
598 sizeof(wpa_s->sme.assoc_req_ie) - wpa_s->sme.assoc_req_ie_len) {
599 wpa_printf(MSG_DEBUG, "TESTING: RSNXE AssocReq override");
600 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
601 wpabuf_head(wpa_s->rsnxe_override_assoc),
602 wpabuf_len(wpa_s->rsnxe_override_assoc));
603 wpa_s->sme.assoc_req_ie_len +=
604 wpabuf_len(wpa_s->rsnxe_override_assoc);
605 } else
606 #endif /* CONFIG_TESTING_OPTIONS */
607 if (wpa_s->rsnxe_len > 0 &&
608 wpa_s->rsnxe_len <=
609 sizeof(wpa_s->sme.assoc_req_ie) - wpa_s->sme.assoc_req_ie_len) {
610 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
611 wpa_s->rsnxe, wpa_s->rsnxe_len);
612 wpa_s->sme.assoc_req_ie_len += wpa_s->rsnxe_len;
613 }
614
615 #ifdef CONFIG_HS20
616 if (is_hs20_network(wpa_s, ssid, bss)) {
617 struct wpabuf *hs20;
618
619 hs20 = wpabuf_alloc(20 + MAX_ROAMING_CONS_OI_LEN);
620 if (hs20) {
621 int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid);
622 size_t len;
623
624 wpas_hs20_add_indication(hs20, pps_mo_id,
625 get_hs20_version(bss));
626 wpas_hs20_add_roam_cons_sel(hs20, ssid);
627 len = sizeof(wpa_s->sme.assoc_req_ie) -
628 wpa_s->sme.assoc_req_ie_len;
629 if (wpabuf_len(hs20) <= len) {
630 os_memcpy(wpa_s->sme.assoc_req_ie +
631 wpa_s->sme.assoc_req_ie_len,
632 wpabuf_head(hs20), wpabuf_len(hs20));
633 wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
634 }
635 wpabuf_free(hs20);
636 }
637 }
638 #endif /* CONFIG_HS20 */
639
640 if (wpa_ie) {
641 size_t len;
642
643 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Reinsert WPA IE");
644
645 len = sizeof(wpa_s->sme.assoc_req_ie) -
646 wpa_s->sme.assoc_req_ie_len;
647
648 if (len > wpa_ie_len) {
649 os_memcpy(wpa_s->sme.assoc_req_ie +
650 wpa_s->sme.assoc_req_ie_len,
651 wpa_ie, wpa_ie_len);
652 wpa_s->sme.assoc_req_ie_len += wpa_ie_len;
653 } else {
654 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Failed to add WPA IE");
655 }
656
657 os_free(wpa_ie);
658 }
659
660 if (wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]) {
661 struct wpabuf *buf = wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ];
662 size_t len;
663
664 len = sizeof(wpa_s->sme.assoc_req_ie) -
665 wpa_s->sme.assoc_req_ie_len;
666 if (wpabuf_len(buf) <= len) {
667 os_memcpy(wpa_s->sme.assoc_req_ie +
668 wpa_s->sme.assoc_req_ie_len,
669 wpabuf_head(buf), wpabuf_len(buf));
670 wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf);
671 }
672 }
673
674 #ifdef CONFIG_MBO
675 mbo_ie = wpa_bss_get_vendor_ie(bss, MBO_IE_VENDOR_TYPE);
676 if (!wpa_s->disable_mbo_oce && mbo_ie) {
677 int len;
678
679 len = wpas_mbo_ie(wpa_s, wpa_s->sme.assoc_req_ie +
680 wpa_s->sme.assoc_req_ie_len,
681 sizeof(wpa_s->sme.assoc_req_ie) -
682 wpa_s->sme.assoc_req_ie_len,
683 !!mbo_attr_from_mbo_ie(mbo_ie,
684 OCE_ATTR_ID_CAPA_IND));
685 if (len >= 0)
686 wpa_s->sme.assoc_req_ie_len += len;
687 }
688 #endif /* CONFIG_MBO */
689
690 #ifdef CONFIG_SAE
691 if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE &&
692 pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, ssid, 0,
693 NULL,
694 wpa_s->key_mgmt == WPA_KEY_MGMT_FT_SAE ?
695 WPA_KEY_MGMT_FT_SAE :
696 WPA_KEY_MGMT_SAE) == 0) {
697 wpa_dbg(wpa_s, MSG_DEBUG,
698 "PMKSA cache entry found - try to use PMKSA caching instead of new SAE authentication");
699 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa);
700 params.auth_alg = WPA_AUTH_ALG_OPEN;
701 wpa_s->sme.sae_pmksa_caching = 1;
702 }
703
704 if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE) {
705 if (start)
706 resp = sme_auth_build_sae_commit(wpa_s, ssid,
707 bss->bssid, 0,
708 start == 2, NULL);
709 else
710 resp = sme_auth_build_sae_confirm(wpa_s, 0);
711 if (resp == NULL) {
712 wpas_connection_failed(wpa_s, bss->bssid);
713 return;
714 }
715 params.auth_data = wpabuf_head(resp);
716 params.auth_data_len = wpabuf_len(resp);
717 wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED;
718 }
719 #endif /* CONFIG_SAE */
720
721 old_ssid = wpa_s->current_ssid;
722 wpa_s->current_ssid = ssid;
723 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
724 wpa_supplicant_initiate_eapol(wpa_s);
725
726 #ifdef CONFIG_FILS
727 /* TODO: FILS operations can in some cases be done between different
728 * network_ctx (i.e., same credentials can be used with multiple
729 * networks). */
730 if (params.auth_alg == WPA_AUTH_ALG_OPEN &&
731 wpa_key_mgmt_fils(ssid->key_mgmt)) {
732 const u8 *indic;
733 u16 fils_info;
734 const u8 *realm, *username, *rrk;
735 size_t realm_len, username_len, rrk_len;
736 u16 next_seq_num;
737
738 /*
739 * Check FILS Indication element (FILS Information field) bits
740 * indicating supported authentication algorithms against local
741 * configuration (ssid->fils_dh_group). Try to use FILS
742 * authentication only if the AP supports the combination in the
743 * network profile. */
744 indic = wpa_bss_get_ie(bss, WLAN_EID_FILS_INDICATION);
745 if (!indic || indic[1] < 2) {
746 wpa_printf(MSG_DEBUG, "SME: " MACSTR
747 " does not include FILS Indication element - cannot use FILS authentication with it",
748 MAC2STR(bss->bssid));
749 goto no_fils;
750 }
751
752 fils_info = WPA_GET_LE16(indic + 2);
753 if (ssid->fils_dh_group == 0 && !(fils_info & BIT(9))) {
754 wpa_printf(MSG_DEBUG, "SME: " MACSTR
755 " does not support FILS SK without PFS - cannot use FILS authentication with it",
756 MAC2STR(bss->bssid));
757 goto no_fils;
758 }
759 if (ssid->fils_dh_group != 0 && !(fils_info & BIT(10))) {
760 wpa_printf(MSG_DEBUG, "SME: " MACSTR
761 " does not support FILS SK with PFS - cannot use FILS authentication with it",
762 MAC2STR(bss->bssid));
763 goto no_fils;
764 }
765
766 if (wpa_s->last_con_fail_realm &&
767 eapol_sm_get_erp_info(wpa_s->eapol, &ssid->eap,
768 &username, &username_len,
769 &realm, &realm_len, &next_seq_num,
770 &rrk, &rrk_len) == 0 &&
771 realm && realm_len == wpa_s->last_con_fail_realm_len &&
772 os_memcmp(realm, wpa_s->last_con_fail_realm,
773 realm_len) == 0) {
774 wpa_printf(MSG_DEBUG,
775 "SME: FILS authentication for this realm failed last time - try to regenerate ERP key hierarchy");
776 goto no_fils;
777 }
778
779 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
780 ssid, 0,
781 wpa_bss_get_fils_cache_id(bss),
782 0) == 0)
783 wpa_printf(MSG_DEBUG,
784 "SME: Try to use FILS with PMKSA caching");
785 resp = fils_build_auth(wpa_s->wpa, ssid->fils_dh_group, md);
786 if (resp) {
787 int auth_alg;
788
789 if (ssid->fils_dh_group)
790 wpa_printf(MSG_DEBUG,
791 "SME: Try to use FILS SK authentication with PFS (DH Group %u)",
792 ssid->fils_dh_group);
793 else
794 wpa_printf(MSG_DEBUG,
795 "SME: Try to use FILS SK authentication without PFS");
796 auth_alg = ssid->fils_dh_group ?
797 WPA_AUTH_ALG_FILS_SK_PFS : WPA_AUTH_ALG_FILS;
798 params.auth_alg = auth_alg;
799 params.auth_data = wpabuf_head(resp);
800 params.auth_data_len = wpabuf_len(resp);
801 wpa_s->sme.auth_alg = auth_alg;
802 }
803 }
804 no_fils:
805 #endif /* CONFIG_FILS */
806
807 wpa_supplicant_cancel_sched_scan(wpa_s);
808 wpa_supplicant_cancel_scan(wpa_s);
809
810 wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
811 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
812 wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
813
814 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
815 wpa_clear_keys(wpa_s, bss->bssid);
816 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
817 if (old_ssid != wpa_s->current_ssid)
818 wpas_notify_network_changed(wpa_s);
819
820 #ifdef CONFIG_HS20
821 hs20_configure_frame_filters(wpa_s);
822 #endif /* CONFIG_HS20 */
823
824 #ifdef CONFIG_P2P
825 /*
826 * If multi-channel concurrency is not supported, check for any
827 * frequency conflict. In case of any frequency conflict, remove the
828 * least prioritized connection.
829 */
830 if (wpa_s->num_multichan_concurrent < 2) {
831 int freq, num;
832 num = get_shared_radio_freqs(wpa_s, &freq, 1);
833 if (num > 0 && freq > 0 && freq != params.freq) {
834 wpa_printf(MSG_DEBUG,
835 "Conflicting frequency found (%d != %d)",
836 freq, params.freq);
837 if (wpas_p2p_handle_frequency_conflicts(wpa_s,
838 params.freq,
839 ssid) < 0) {
840 wpas_connection_failed(wpa_s, bss->bssid);
841 wpa_supplicant_mark_disassoc(wpa_s);
842 wpabuf_free(resp);
843 wpas_connect_work_done(wpa_s);
844 return;
845 }
846 }
847 }
848 #endif /* CONFIG_P2P */
849
850 if (skip_auth) {
851 wpa_msg(wpa_s, MSG_DEBUG,
852 "SME: Skip authentication step on reassoc-to-same-BSS");
853 wpabuf_free(resp);
854 sme_associate(wpa_s, ssid->mode, bss->bssid, WLAN_AUTH_OPEN);
855 return;
856 }
857
858
859 wpa_s->sme.auth_alg = params.auth_alg;
860 if (wpa_drv_authenticate(wpa_s, &params) < 0) {
861 wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
862 "driver failed");
863 wpas_connection_failed(wpa_s, bss->bssid);
864 wpa_supplicant_mark_disassoc(wpa_s);
865 wpabuf_free(resp);
866 wpas_connect_work_done(wpa_s);
867 return;
868 }
869
870 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
871 NULL);
872
873 /*
874 * Association will be started based on the authentication event from
875 * the driver.
876 */
877
878 wpabuf_free(resp);
879 }
880
881
882 static void sme_auth_start_cb(struct wpa_radio_work *work, int deinit)
883 {
884 struct wpa_connect_work *cwork = work->ctx;
885 struct wpa_supplicant *wpa_s = work->wpa_s;
886
887 if (deinit) {
888 if (work->started)
889 wpa_s->connect_work = NULL;
890
891 wpas_connect_work_free(cwork);
892 return;
893 }
894
895 wpa_s->connect_work = work;
896
897 if (cwork->bss_removed ||
898 !wpas_valid_bss_ssid(wpa_s, cwork->bss, cwork->ssid) ||
899 wpas_network_disabled(wpa_s, cwork->ssid)) {
900 wpa_dbg(wpa_s, MSG_DEBUG, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt");
901 wpas_connect_work_done(wpa_s);
902 return;
903 }
904
905 /* Starting new connection, so clear the possibly used WPA IE from the
906 * previous association. */
907 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
908 wpa_sm_set_assoc_rsnxe(wpa_s->wpa, NULL, 0);
909 wpa_s->rsnxe_len = 0;
910
911 sme_send_authentication(wpa_s, cwork->bss, cwork->ssid, 1);
912 }
913
914
915 void sme_authenticate(struct wpa_supplicant *wpa_s,
916 struct wpa_bss *bss, struct wpa_ssid *ssid)
917 {
918 struct wpa_connect_work *cwork;
919
920 if (bss == NULL || ssid == NULL)
921 return;
922 if (wpa_s->connect_work) {
923 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reject sme_authenticate() call since connect_work exist");
924 return;
925 }
926
927 if (radio_work_pending(wpa_s, "sme-connect")) {
928 /*
929 * The previous sme-connect work might no longer be valid due to
930 * the fact that the BSS list was updated. In addition, it makes
931 * sense to adhere to the 'newer' decision.
932 */
933 wpa_dbg(wpa_s, MSG_DEBUG,
934 "SME: Remove previous pending sme-connect");
935 radio_remove_works(wpa_s, "sme-connect", 0);
936 }
937
938 wpas_abort_ongoing_scan(wpa_s);
939
940 cwork = os_zalloc(sizeof(*cwork));
941 if (cwork == NULL)
942 return;
943 cwork->bss = bss;
944 cwork->ssid = ssid;
945 cwork->sme = 1;
946
947 #ifdef CONFIG_SAE
948 wpa_s->sme.sae.state = SAE_NOTHING;
949 wpa_s->sme.sae.send_confirm = 0;
950 wpa_s->sme.sae_group_index = 0;
951 #endif /* CONFIG_SAE */
952
953 if (radio_add_work(wpa_s, bss->freq, "sme-connect", 1,
954 sme_auth_start_cb, cwork) < 0)
955 wpas_connect_work_free(cwork);
956 }
957
958
959 #ifdef CONFIG_SAE
960
961 static int sme_external_auth_build_buf(struct wpabuf *buf,
962 struct wpabuf *params,
963 const u8 *sa, const u8 *da,
964 u16 auth_transaction, u16 seq_num,
965 u16 status_code)
966 {
967 struct ieee80211_mgmt *resp;
968
969 resp = wpabuf_put(buf, offsetof(struct ieee80211_mgmt,
970 u.auth.variable));
971
972 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
973 (WLAN_FC_STYPE_AUTH << 4));
974 os_memcpy(resp->da, da, ETH_ALEN);
975 os_memcpy(resp->sa, sa, ETH_ALEN);
976 os_memcpy(resp->bssid, da, ETH_ALEN);
977 resp->u.auth.auth_alg = host_to_le16(WLAN_AUTH_SAE);
978 resp->seq_ctrl = host_to_le16(seq_num << 4);
979 resp->u.auth.auth_transaction = host_to_le16(auth_transaction);
980 resp->u.auth.status_code = host_to_le16(status_code);
981 if (params)
982 wpabuf_put_buf(buf, params);
983
984 return 0;
985 }
986
987
988 static int sme_external_auth_send_sae_commit(struct wpa_supplicant *wpa_s,
989 const u8 *bssid,
990 struct wpa_ssid *ssid)
991 {
992 struct wpabuf *resp, *buf;
993 int use_pt;
994
995 resp = sme_auth_build_sae_commit(wpa_s, ssid, bssid, 1, 0, &use_pt);
996 if (!resp) {
997 wpa_printf(MSG_DEBUG, "SAE: Failed to build SAE commit");
998 return -1;
999 }
1000
1001 wpa_s->sme.sae.state = SAE_COMMITTED;
1002 buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + wpabuf_len(resp));
1003 if (!buf) {
1004 wpabuf_free(resp);
1005 return -1;
1006 }
1007
1008 wpa_s->sme.seq_num++;
1009 sme_external_auth_build_buf(buf, resp, wpa_s->own_addr,
1010 bssid, 1, wpa_s->sme.seq_num,
1011 use_pt ? WLAN_STATUS_SAE_HASH_TO_ELEMENT :
1012 WLAN_STATUS_SUCCESS);
1013 wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 0);
1014 wpabuf_free(resp);
1015 wpabuf_free(buf);
1016
1017 return 0;
1018 }
1019
1020
1021 static void sme_send_external_auth_status(struct wpa_supplicant *wpa_s,
1022 u16 status)
1023 {
1024 struct external_auth params;
1025
1026 os_memset(&params, 0, sizeof(params));
1027 params.status = status;
1028 params.ssid = wpa_s->sme.ext_auth_ssid;
1029 params.ssid_len = wpa_s->sme.ext_auth_ssid_len;
1030 params.bssid = wpa_s->sme.ext_auth_bssid;
1031 if (wpa_s->conf->sae_pmkid_in_assoc && status == WLAN_STATUS_SUCCESS)
1032 params.pmkid = wpa_s->sme.sae.pmkid;
1033 wpa_drv_send_external_auth_status(wpa_s, &params);
1034 }
1035
1036
1037 static int sme_handle_external_auth_start(struct wpa_supplicant *wpa_s,
1038 union wpa_event_data *data)
1039 {
1040 struct wpa_ssid *ssid;
1041 size_t ssid_str_len = data->external_auth.ssid_len;
1042 const u8 *ssid_str = data->external_auth.ssid;
1043
1044 /* Get the SSID conf from the ssid string obtained */
1045 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1046 if (!wpas_network_disabled(wpa_s, ssid) &&
1047 ssid_str_len == ssid->ssid_len &&
1048 os_memcmp(ssid_str, ssid->ssid, ssid_str_len) == 0 &&
1049 (ssid->key_mgmt & (WPA_KEY_MGMT_SAE | WPA_KEY_MGMT_FT_SAE)))
1050 break;
1051 }
1052 if (!ssid ||
1053 sme_external_auth_send_sae_commit(wpa_s, data->external_auth.bssid,
1054 ssid) < 0)
1055 return -1;
1056
1057 return 0;
1058 }
1059
1060
1061 static void sme_external_auth_send_sae_confirm(struct wpa_supplicant *wpa_s,
1062 const u8 *da)
1063 {
1064 struct wpabuf *resp, *buf;
1065
1066 resp = sme_auth_build_sae_confirm(wpa_s, 1);
1067 if (!resp) {
1068 wpa_printf(MSG_DEBUG, "SAE: Confirm message buf alloc failure");
1069 return;
1070 }
1071
1072 wpa_s->sme.sae.state = SAE_CONFIRMED;
1073 buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN + wpabuf_len(resp));
1074 if (!buf) {
1075 wpa_printf(MSG_DEBUG, "SAE: Auth Confirm buf alloc failure");
1076 wpabuf_free(resp);
1077 return;
1078 }
1079 wpa_s->sme.seq_num++;
1080 sme_external_auth_build_buf(buf, resp, wpa_s->own_addr,
1081 da, 2, wpa_s->sme.seq_num,
1082 WLAN_STATUS_SUCCESS);
1083 wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 0);
1084 wpabuf_free(resp);
1085 wpabuf_free(buf);
1086 }
1087
1088
1089 void sme_external_auth_trigger(struct wpa_supplicant *wpa_s,
1090 union wpa_event_data *data)
1091 {
1092 if (RSN_SELECTOR_GET(&data->external_auth.key_mgmt_suite) !=
1093 RSN_AUTH_KEY_MGMT_SAE)
1094 return;
1095
1096 if (data->external_auth.action == EXT_AUTH_START) {
1097 if (!data->external_auth.bssid || !data->external_auth.ssid)
1098 return;
1099 os_memcpy(wpa_s->sme.ext_auth_bssid, data->external_auth.bssid,
1100 ETH_ALEN);
1101 os_memcpy(wpa_s->sme.ext_auth_ssid, data->external_auth.ssid,
1102 data->external_auth.ssid_len);
1103 wpa_s->sme.ext_auth_ssid_len = data->external_auth.ssid_len;
1104 wpa_s->sme.seq_num = 0;
1105 wpa_s->sme.sae.state = SAE_NOTHING;
1106 wpa_s->sme.sae.send_confirm = 0;
1107 wpa_s->sme.sae_group_index = 0;
1108 if (sme_handle_external_auth_start(wpa_s, data) < 0)
1109 sme_send_external_auth_status(wpa_s,
1110 WLAN_STATUS_UNSPECIFIED_FAILURE);
1111 } else if (data->external_auth.action == EXT_AUTH_ABORT) {
1112 /* Report failure to driver for the wrong trigger */
1113 sme_send_external_auth_status(wpa_s,
1114 WLAN_STATUS_UNSPECIFIED_FAILURE);
1115 }
1116 }
1117
1118
1119 static int sme_sae_is_group_enabled(struct wpa_supplicant *wpa_s, int group)
1120 {
1121 int *groups = wpa_s->conf->sae_groups;
1122 int default_groups[] = { 19, 20, 21, 0 };
1123 int i;
1124
1125 if (!groups)
1126 groups = default_groups;
1127
1128 for (i = 0; groups[i] > 0; i++) {
1129 if (groups[i] == group)
1130 return 1;
1131 }
1132
1133 return 0;
1134 }
1135
1136
1137 static int sme_check_sae_rejected_groups(struct wpa_supplicant *wpa_s,
1138 const struct wpabuf *groups)
1139 {
1140 size_t i, count;
1141 const u8 *pos;
1142
1143 if (!groups)
1144 return 0;
1145
1146 pos = wpabuf_head(groups);
1147 count = wpabuf_len(groups) / 2;
1148 for (i = 0; i < count; i++) {
1149 int enabled;
1150 u16 group;
1151
1152 group = WPA_GET_LE16(pos);
1153 pos += 2;
1154 enabled = sme_sae_is_group_enabled(wpa_s, group);
1155 wpa_printf(MSG_DEBUG, "SAE: Rejected group %u is %s",
1156 group, enabled ? "enabled" : "disabled");
1157 if (enabled)
1158 return 1;
1159 }
1160
1161 return 0;
1162 }
1163
1164
1165 static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
1166 u16 status_code, const u8 *data, size_t len,
1167 int external, const u8 *sa)
1168 {
1169 int *groups;
1170
1171 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
1172 "status code %u", auth_transaction, status_code);
1173
1174 if (auth_transaction == 1 &&
1175 status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
1176 wpa_s->sme.sae.state == SAE_COMMITTED &&
1177 (external || wpa_s->current_bss) && wpa_s->current_ssid) {
1178 int default_groups[] = { 19, 20, 21, 0 };
1179 u16 group;
1180
1181 groups = wpa_s->conf->sae_groups;
1182 if (!groups || groups[0] <= 0)
1183 groups = default_groups;
1184
1185 if (len < sizeof(le16)) {
1186 wpa_dbg(wpa_s, MSG_DEBUG,
1187 "SME: Too short SAE anti-clogging token request");
1188 return -1;
1189 }
1190 group = WPA_GET_LE16(data);
1191 wpa_dbg(wpa_s, MSG_DEBUG,
1192 "SME: SAE anti-clogging token requested (group %u)",
1193 group);
1194 if (sae_group_allowed(&wpa_s->sme.sae, groups, group) !=
1195 WLAN_STATUS_SUCCESS) {
1196 wpa_dbg(wpa_s, MSG_ERROR,
1197 "SME: SAE group %u of anti-clogging request is invalid",
1198 group);
1199 return -1;
1200 }
1201 wpabuf_free(wpa_s->sme.sae_token);
1202 wpa_s->sme.sae_token = wpabuf_alloc_copy(data + sizeof(le16),
1203 len - sizeof(le16));
1204 if (!external)
1205 sme_send_authentication(wpa_s, wpa_s->current_bss,
1206 wpa_s->current_ssid, 2);
1207 else
1208 sme_external_auth_send_sae_commit(
1209 wpa_s, wpa_s->sme.ext_auth_bssid,
1210 wpa_s->current_ssid);
1211 return 0;
1212 }
1213
1214 if (auth_transaction == 1 &&
1215 status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
1216 wpa_s->sme.sae.state == SAE_COMMITTED &&
1217 (external || wpa_s->current_bss) && wpa_s->current_ssid) {
1218 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
1219 int_array_add_unique(&wpa_s->sme.sae_rejected_groups,
1220 wpa_s->sme.sae.group);
1221 wpa_s->sme.sae_group_index++;
1222 if (sme_set_sae_group(wpa_s) < 0)
1223 return -1; /* no other groups enabled */
1224 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
1225 if (!external)
1226 sme_send_authentication(wpa_s, wpa_s->current_bss,
1227 wpa_s->current_ssid, 1);
1228 else
1229 sme_external_auth_send_sae_commit(
1230 wpa_s, wpa_s->sme.ext_auth_bssid,
1231 wpa_s->current_ssid);
1232 return 0;
1233 }
1234
1235 if (auth_transaction == 1 &&
1236 status_code == WLAN_STATUS_UNKNOWN_PASSWORD_IDENTIFIER) {
1237 const u8 *bssid = sa ? sa : wpa_s->pending_bssid;
1238
1239 wpa_msg(wpa_s, MSG_INFO,
1240 WPA_EVENT_SAE_UNKNOWN_PASSWORD_IDENTIFIER MACSTR,
1241 MAC2STR(bssid));
1242 return -1;
1243 }
1244
1245 if (status_code != WLAN_STATUS_SUCCESS &&
1246 status_code != WLAN_STATUS_SAE_HASH_TO_ELEMENT)
1247 return -1;
1248
1249 if (auth_transaction == 1) {
1250 u16 res;
1251
1252 groups = wpa_s->conf->sae_groups;
1253
1254 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
1255 if ((!external && wpa_s->current_bss == NULL) ||
1256 wpa_s->current_ssid == NULL)
1257 return -1;
1258 if (wpa_s->sme.sae.state != SAE_COMMITTED) {
1259 wpa_printf(MSG_DEBUG,
1260 "SAE: Ignore commit message while waiting for confirm");
1261 return 0;
1262 }
1263 if (groups && groups[0] <= 0)
1264 groups = NULL;
1265 res = sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
1266 groups, status_code ==
1267 WLAN_STATUS_SAE_HASH_TO_ELEMENT);
1268 if (res == SAE_SILENTLY_DISCARD) {
1269 wpa_printf(MSG_DEBUG,
1270 "SAE: Drop commit message due to reflection attack");
1271 return 0;
1272 }
1273 if (res != WLAN_STATUS_SUCCESS)
1274 return -1;
1275
1276 if (wpa_s->sme.sae.tmp &&
1277 sme_check_sae_rejected_groups(
1278 wpa_s,
1279 wpa_s->sme.sae.tmp->peer_rejected_groups))
1280 return -1;
1281
1282 if (sae_process_commit(&wpa_s->sme.sae) < 0) {
1283 wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
1284 "commit");
1285 return -1;
1286 }
1287
1288 wpabuf_free(wpa_s->sme.sae_token);
1289 wpa_s->sme.sae_token = NULL;
1290 if (!external)
1291 sme_send_authentication(wpa_s, wpa_s->current_bss,
1292 wpa_s->current_ssid, 0);
1293 else
1294 sme_external_auth_send_sae_confirm(wpa_s, sa);
1295 return 0;
1296 } else if (auth_transaction == 2) {
1297 if (status_code != WLAN_STATUS_SUCCESS)
1298 return -1;
1299 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
1300 if (wpa_s->sme.sae.state != SAE_CONFIRMED)
1301 return -1;
1302 if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
1303 return -1;
1304 wpa_s->sme.sae.state = SAE_ACCEPTED;
1305 sae_clear_temp_data(&wpa_s->sme.sae);
1306
1307 if (external) {
1308 /* Report success to driver */
1309 sme_send_external_auth_status(wpa_s,
1310 WLAN_STATUS_SUCCESS);
1311 }
1312
1313 return 1;
1314 }
1315
1316 return -1;
1317 }
1318
1319
1320 static int sme_sae_set_pmk(struct wpa_supplicant *wpa_s, const u8 *bssid)
1321 {
1322 wpa_printf(MSG_DEBUG,
1323 "SME: SAE completed - setting PMK for 4-way handshake");
1324 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN,
1325 wpa_s->sme.sae.pmkid, bssid);
1326 if (wpa_s->conf->sae_pmkid_in_assoc) {
1327 /* Update the own RSNE contents now that we have set the PMK
1328 * and added a PMKSA cache entry based on the successfully
1329 * completed SAE exchange. In practice, this will add the PMKID
1330 * into RSNE. */
1331 if (wpa_s->sme.assoc_req_ie_len + 2 + PMKID_LEN >
1332 sizeof(wpa_s->sme.assoc_req_ie)) {
1333 wpa_msg(wpa_s, MSG_WARNING,
1334 "RSN: Not enough room for inserting own PMKID into RSNE");
1335 return -1;
1336 }
1337 if (wpa_insert_pmkid(wpa_s->sme.assoc_req_ie,
1338 &wpa_s->sme.assoc_req_ie_len,
1339 wpa_s->sme.sae.pmkid) < 0)
1340 return -1;
1341 wpa_hexdump(MSG_DEBUG,
1342 "SME: Updated Association Request IEs",
1343 wpa_s->sme.assoc_req_ie,
1344 wpa_s->sme.assoc_req_ie_len);
1345 }
1346
1347 return 0;
1348 }
1349
1350
1351 void sme_external_auth_mgmt_rx(struct wpa_supplicant *wpa_s,
1352 const u8 *auth_frame, size_t len)
1353 {
1354 const struct ieee80211_mgmt *header;
1355 size_t auth_length;
1356
1357 header = (const struct ieee80211_mgmt *) auth_frame;
1358 auth_length = IEEE80211_HDRLEN + sizeof(header->u.auth);
1359
1360 if (len < auth_length) {
1361 /* Notify failure to the driver */
1362 sme_send_external_auth_status(wpa_s,
1363 WLAN_STATUS_UNSPECIFIED_FAILURE);
1364 return;
1365 }
1366
1367 if (le_to_host16(header->u.auth.auth_alg) == WLAN_AUTH_SAE) {
1368 int res;
1369
1370 res = sme_sae_auth(
1371 wpa_s, le_to_host16(header->u.auth.auth_transaction),
1372 le_to_host16(header->u.auth.status_code),
1373 header->u.auth.variable,
1374 len - auth_length, 1, header->sa);
1375 if (res < 0) {
1376 /* Notify failure to the driver */
1377 sme_send_external_auth_status(
1378 wpa_s, WLAN_STATUS_UNSPECIFIED_FAILURE);
1379 return;
1380 }
1381 if (res != 1)
1382 return;
1383
1384 if (sme_sae_set_pmk(wpa_s, wpa_s->sme.ext_auth_bssid) < 0)
1385 return;
1386 }
1387 }
1388
1389 #endif /* CONFIG_SAE */
1390
1391
1392 void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
1393 {
1394 struct wpa_ssid *ssid = wpa_s->current_ssid;
1395
1396 if (ssid == NULL) {
1397 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
1398 "when network is not selected");
1399 return;
1400 }
1401
1402 if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
1403 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
1404 "when not in authenticating state");
1405 return;
1406 }
1407
1408 if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
1409 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
1410 "unexpected peer " MACSTR,
1411 MAC2STR(data->auth.peer));
1412 return;
1413 }
1414
1415 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
1416 " auth_type=%d auth_transaction=%d status_code=%d",
1417 MAC2STR(data->auth.peer), data->auth.auth_type,
1418 data->auth.auth_transaction, data->auth.status_code);
1419 wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
1420 data->auth.ies, data->auth.ies_len);
1421
1422 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1423
1424 #ifdef CONFIG_SAE
1425 if (data->auth.auth_type == WLAN_AUTH_SAE) {
1426 int res;
1427 res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
1428 data->auth.status_code, data->auth.ies,
1429 data->auth.ies_len, 0, NULL);
1430 if (res < 0) {
1431 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1432 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1433
1434 }
1435 if (res != 1)
1436 return;
1437
1438 if (sme_sae_set_pmk(wpa_s, wpa_s->pending_bssid) < 0)
1439 return;
1440 }
1441 #endif /* CONFIG_SAE */
1442
1443 if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
1444 char *ie_txt = NULL;
1445
1446 if (data->auth.ies && data->auth.ies_len) {
1447 size_t buflen = 2 * data->auth.ies_len + 1;
1448 ie_txt = os_malloc(buflen);
1449 if (ie_txt) {
1450 wpa_snprintf_hex(ie_txt, buflen, data->auth.ies,
1451 data->auth.ies_len);
1452 }
1453 }
1454 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AUTH_REJECT MACSTR
1455 " auth_type=%u auth_transaction=%u status_code=%u%s%s",
1456 MAC2STR(data->auth.peer), data->auth.auth_type,
1457 data->auth.auth_transaction, data->auth.status_code,
1458 ie_txt ? " ie=" : "",
1459 ie_txt ? ie_txt : "");
1460 os_free(ie_txt);
1461
1462 #ifdef CONFIG_FILS
1463 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FILS ||
1464 wpa_s->sme.auth_alg == WPA_AUTH_ALG_FILS_SK_PFS)
1465 fils_connection_failure(wpa_s);
1466 #endif /* CONFIG_FILS */
1467
1468 if (data->auth.status_code !=
1469 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
1470 wpa_s->sme.auth_alg == data->auth.auth_type ||
1471 wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
1472 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1473 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1474 return;
1475 }
1476
1477 wpas_connect_work_done(wpa_s);
1478
1479 switch (data->auth.auth_type) {
1480 case WLAN_AUTH_OPEN:
1481 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
1482
1483 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
1484 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
1485 wpa_s->current_ssid);
1486 return;
1487
1488 case WLAN_AUTH_SHARED_KEY:
1489 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
1490
1491 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
1492 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
1493 wpa_s->current_ssid);
1494 return;
1495
1496 default:
1497 return;
1498 }
1499 }
1500
1501 #ifdef CONFIG_IEEE80211R
1502 if (data->auth.auth_type == WLAN_AUTH_FT) {
1503 const u8 *ric_ies = NULL;
1504 size_t ric_ies_len = 0;
1505
1506 if (wpa_s->ric_ies) {
1507 ric_ies = wpabuf_head(wpa_s->ric_ies);
1508 ric_ies_len = wpabuf_len(wpa_s->ric_ies);
1509 }
1510 if (wpa_ft_process_response(wpa_s->wpa, data->auth.ies,
1511 data->auth.ies_len, 0,
1512 data->auth.peer,
1513 ric_ies, ric_ies_len) < 0) {
1514 wpa_dbg(wpa_s, MSG_DEBUG,
1515 "SME: FT Authentication response processing failed");
1516 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
1517 MACSTR
1518 " reason=%d locally_generated=1",
1519 MAC2STR(wpa_s->pending_bssid),
1520 WLAN_REASON_DEAUTH_LEAVING);
1521 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1522 wpa_supplicant_mark_disassoc(wpa_s);
1523 return;
1524 }
1525 }
1526 #endif /* CONFIG_IEEE80211R */
1527
1528 #ifdef CONFIG_FILS
1529 if (data->auth.auth_type == WLAN_AUTH_FILS_SK ||
1530 data->auth.auth_type == WLAN_AUTH_FILS_SK_PFS) {
1531 u16 expect_auth_type;
1532
1533 expect_auth_type = wpa_s->sme.auth_alg ==
1534 WPA_AUTH_ALG_FILS_SK_PFS ? WLAN_AUTH_FILS_SK_PFS :
1535 WLAN_AUTH_FILS_SK;
1536 if (data->auth.auth_type != expect_auth_type) {
1537 wpa_dbg(wpa_s, MSG_DEBUG,
1538 "SME: FILS Authentication response used different auth alg (%u; expected %u)",
1539 data->auth.auth_type, expect_auth_type);
1540 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
1541 MACSTR
1542 " reason=%d locally_generated=1",
1543 MAC2STR(wpa_s->pending_bssid),
1544 WLAN_REASON_DEAUTH_LEAVING);
1545 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1546 wpa_supplicant_mark_disassoc(wpa_s);
1547 return;
1548 }
1549
1550 if (fils_process_auth(wpa_s->wpa, wpa_s->pending_bssid,
1551 data->auth.ies, data->auth.ies_len) < 0) {
1552 wpa_dbg(wpa_s, MSG_DEBUG,
1553 "SME: FILS Authentication response processing failed");
1554 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
1555 MACSTR
1556 " reason=%d locally_generated=1",
1557 MAC2STR(wpa_s->pending_bssid),
1558 WLAN_REASON_DEAUTH_LEAVING);
1559 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1560 wpa_supplicant_mark_disassoc(wpa_s);
1561 return;
1562 }
1563 }
1564 #endif /* CONFIG_FILS */
1565
1566 sme_associate(wpa_s, ssid->mode, data->auth.peer,
1567 data->auth.auth_type);
1568 }
1569
1570
1571 #ifdef CONFIG_IEEE80211R
1572 static void remove_ie(u8 *buf, size_t *len, u8 eid)
1573 {
1574 u8 *pos, *next, *end;
1575
1576 pos = (u8 *) get_ie(buf, *len, eid);
1577 if (pos) {
1578 next = pos + 2 + pos[1];
1579 end = buf + *len;
1580 *len -= 2 + pos[1];
1581 os_memmove(pos, next, end - next);
1582 }
1583 }
1584 #endif /* CONFIG_IEEE80211R */
1585
1586
1587 void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
1588 const u8 *bssid, u16 auth_type)
1589 {
1590 struct wpa_driver_associate_params params;
1591 struct ieee802_11_elems elems;
1592 #ifdef CONFIG_FILS
1593 u8 nonces[2 * FILS_NONCE_LEN];
1594 #endif /* CONFIG_FILS */
1595 #ifdef CONFIG_HT_OVERRIDES
1596 struct ieee80211_ht_capabilities htcaps;
1597 struct ieee80211_ht_capabilities htcaps_mask;
1598 #endif /* CONFIG_HT_OVERRIDES */
1599 #ifdef CONFIG_VHT_OVERRIDES
1600 struct ieee80211_vht_capabilities vhtcaps;
1601 struct ieee80211_vht_capabilities vhtcaps_mask;
1602 #endif /* CONFIG_VHT_OVERRIDES */
1603
1604 os_memset(&params, 0, sizeof(params));
1605
1606 #ifdef CONFIG_FILS
1607 if (auth_type == WLAN_AUTH_FILS_SK ||
1608 auth_type == WLAN_AUTH_FILS_SK_PFS) {
1609 struct wpabuf *buf;
1610 const u8 *snonce, *anonce;
1611 const unsigned int max_hlp = 20;
1612 struct wpabuf *hlp[max_hlp];
1613 unsigned int i, num_hlp = 0;
1614 struct fils_hlp_req *req;
1615
1616 dl_list_for_each(req, &wpa_s->fils_hlp_req, struct fils_hlp_req,
1617 list) {
1618 hlp[num_hlp] = wpabuf_alloc(2 * ETH_ALEN + 6 +
1619 wpabuf_len(req->pkt));
1620 if (!hlp[num_hlp])
1621 break;
1622 wpabuf_put_data(hlp[num_hlp], req->dst, ETH_ALEN);
1623 wpabuf_put_data(hlp[num_hlp], wpa_s->own_addr,
1624 ETH_ALEN);
1625 wpabuf_put_data(hlp[num_hlp],
1626 "\xaa\xaa\x03\x00\x00\x00", 6);
1627 wpabuf_put_buf(hlp[num_hlp], req->pkt);
1628 num_hlp++;
1629 if (num_hlp >= max_hlp)
1630 break;
1631 }
1632
1633 buf = fils_build_assoc_req(wpa_s->wpa, &params.fils_kek,
1634 &params.fils_kek_len, &snonce,
1635 &anonce,
1636 (const struct wpabuf **) hlp,
1637 num_hlp);
1638 for (i = 0; i < num_hlp; i++)
1639 wpabuf_free(hlp[i]);
1640 if (!buf)
1641 return;
1642 wpa_hexdump(MSG_DEBUG, "FILS: assoc_req before FILS elements",
1643 wpa_s->sme.assoc_req_ie,
1644 wpa_s->sme.assoc_req_ie_len);
1645 #ifdef CONFIG_IEEE80211R
1646 if (wpa_key_mgmt_ft(wpa_s->key_mgmt)) {
1647 /* Remove RSNE and MDE to allow them to be overridden
1648 * with FILS+FT specific values from
1649 * fils_build_assoc_req(). */
1650 remove_ie(wpa_s->sme.assoc_req_ie,
1651 &wpa_s->sme.assoc_req_ie_len,
1652 WLAN_EID_RSN);
1653 wpa_hexdump(MSG_DEBUG,
1654 "FILS: assoc_req after RSNE removal",
1655 wpa_s->sme.assoc_req_ie,
1656 wpa_s->sme.assoc_req_ie_len);
1657 remove_ie(wpa_s->sme.assoc_req_ie,
1658 &wpa_s->sme.assoc_req_ie_len,
1659 WLAN_EID_MOBILITY_DOMAIN);
1660 wpa_hexdump(MSG_DEBUG,
1661 "FILS: assoc_req after MDE removal",
1662 wpa_s->sme.assoc_req_ie,
1663 wpa_s->sme.assoc_req_ie_len);
1664 }
1665 #endif /* CONFIG_IEEE80211R */
1666 /* TODO: Make wpa_s->sme.assoc_req_ie use dynamic allocation */
1667 if (wpa_s->sme.assoc_req_ie_len + wpabuf_len(buf) >
1668 sizeof(wpa_s->sme.assoc_req_ie)) {
1669 wpa_printf(MSG_ERROR,
1670 "FILS: Not enough buffer room for own AssocReq elements");
1671 wpabuf_free(buf);
1672 return;
1673 }
1674 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1675 wpabuf_head(buf), wpabuf_len(buf));
1676 wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf);
1677 wpabuf_free(buf);
1678 wpa_hexdump(MSG_DEBUG, "FILS: assoc_req after FILS elements",
1679 wpa_s->sme.assoc_req_ie,
1680 wpa_s->sme.assoc_req_ie_len);
1681
1682 os_memcpy(nonces, snonce, FILS_NONCE_LEN);
1683 os_memcpy(nonces + FILS_NONCE_LEN, anonce, FILS_NONCE_LEN);
1684 params.fils_nonces = nonces;
1685 params.fils_nonces_len = sizeof(nonces);
1686 }
1687 #endif /* CONFIG_FILS */
1688
1689 #ifdef CONFIG_OWE
1690 #ifdef CONFIG_TESTING_OPTIONS
1691 if (get_ie_ext(wpa_s->sme.assoc_req_ie, wpa_s->sme.assoc_req_ie_len,
1692 WLAN_EID_EXT_OWE_DH_PARAM)) {
1693 wpa_printf(MSG_INFO, "TESTING: Override OWE DH element");
1694 } else
1695 #endif /* CONFIG_TESTING_OPTIONS */
1696 if (auth_type == WLAN_AUTH_OPEN &&
1697 wpa_s->key_mgmt == WPA_KEY_MGMT_OWE) {
1698 struct wpabuf *owe_ie;
1699 u16 group;
1700
1701 if (wpa_s->current_ssid && wpa_s->current_ssid->owe_group) {
1702 group = wpa_s->current_ssid->owe_group;
1703 } else if (wpa_s->assoc_status_code ==
1704 WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED) {
1705 if (wpa_s->last_owe_group == 19)
1706 group = 20;
1707 else if (wpa_s->last_owe_group == 20)
1708 group = 21;
1709 else
1710 group = OWE_DH_GROUP;
1711 } else {
1712 group = OWE_DH_GROUP;
1713 }
1714
1715 wpa_s->last_owe_group = group;
1716 wpa_printf(MSG_DEBUG, "OWE: Try to use group %u", group);
1717 owe_ie = owe_build_assoc_req(wpa_s->wpa, group);
1718 if (!owe_ie) {
1719 wpa_printf(MSG_ERROR,
1720 "OWE: Failed to build IE for Association Request frame");
1721 return;
1722 }
1723 if (wpa_s->sme.assoc_req_ie_len + wpabuf_len(owe_ie) >
1724 sizeof(wpa_s->sme.assoc_req_ie)) {
1725 wpa_printf(MSG_ERROR,
1726 "OWE: Not enough buffer room for own Association Request frame elements");
1727 wpabuf_free(owe_ie);
1728 return;
1729 }
1730 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1731 wpabuf_head(owe_ie), wpabuf_len(owe_ie));
1732 wpa_s->sme.assoc_req_ie_len += wpabuf_len(owe_ie);
1733 wpabuf_free(owe_ie);
1734 }
1735 #endif /* CONFIG_OWE */
1736
1737 #ifdef CONFIG_DPP2
1738 if (wpa_s->key_mgmt == WPA_KEY_MGMT_DPP && wpa_s->current_ssid &&
1739 wpa_s->current_ssid->dpp_netaccesskey) {
1740 struct wpa_ssid *ssid = wpa_s->current_ssid;
1741
1742 dpp_pfs_free(wpa_s->dpp_pfs);
1743 wpa_s->dpp_pfs = dpp_pfs_init(ssid->dpp_netaccesskey,
1744 ssid->dpp_netaccesskey_len);
1745 if (!wpa_s->dpp_pfs) {
1746 wpa_printf(MSG_DEBUG, "DPP: Could not initialize PFS");
1747 /* Try to continue without PFS */
1748 goto pfs_fail;
1749 }
1750 if (wpa_s->sme.assoc_req_ie_len +
1751 wpabuf_len(wpa_s->dpp_pfs->ie) >
1752 sizeof(wpa_s->sme.assoc_req_ie)) {
1753 wpa_printf(MSG_ERROR,
1754 "DPP: Not enough buffer room for own Association Request frame elements");
1755 dpp_pfs_free(wpa_s->dpp_pfs);
1756 wpa_s->dpp_pfs = NULL;
1757 goto pfs_fail;
1758 }
1759 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1760 wpabuf_head(wpa_s->dpp_pfs->ie),
1761 wpabuf_len(wpa_s->dpp_pfs->ie));
1762 wpa_s->sme.assoc_req_ie_len += wpabuf_len(wpa_s->dpp_pfs->ie);
1763 }
1764 pfs_fail:
1765 #endif /* CONFIG_DPP2 */
1766
1767 if (wpa_s->current_ssid && wpa_s->current_ssid->multi_ap_backhaul_sta) {
1768 size_t multi_ap_ie_len;
1769
1770 multi_ap_ie_len = add_multi_ap_ie(
1771 wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1772 sizeof(wpa_s->sme.assoc_req_ie) -
1773 wpa_s->sme.assoc_req_ie_len,
1774 MULTI_AP_BACKHAUL_STA);
1775 if (multi_ap_ie_len == 0) {
1776 wpa_printf(MSG_ERROR,
1777 "Multi-AP: Failed to build Multi-AP IE");
1778 return;
1779 }
1780 wpa_s->sme.assoc_req_ie_len += multi_ap_ie_len;
1781 }
1782
1783 params.bssid = bssid;
1784 params.ssid = wpa_s->sme.ssid;
1785 params.ssid_len = wpa_s->sme.ssid_len;
1786 params.freq.freq = wpa_s->sme.freq;
1787 params.bg_scan_period = wpa_s->current_ssid ?
1788 wpa_s->current_ssid->bg_scan_period : -1;
1789 params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
1790 wpa_s->sme.assoc_req_ie : NULL;
1791 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
1792 wpa_hexdump(MSG_DEBUG, "SME: Association Request IEs",
1793 params.wpa_ie, params.wpa_ie_len);
1794 params.pairwise_suite = wpa_s->pairwise_cipher;
1795 params.group_suite = wpa_s->group_cipher;
1796 params.mgmt_group_suite = wpa_s->mgmt_group_cipher;
1797 params.key_mgmt_suite = wpa_s->key_mgmt;
1798 params.wpa_proto = wpa_s->wpa_proto;
1799 #ifdef CONFIG_HT_OVERRIDES
1800 os_memset(&htcaps, 0, sizeof(htcaps));
1801 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
1802 params.htcaps = (u8 *) &htcaps;
1803 params.htcaps_mask = (u8 *) &htcaps_mask;
1804 wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, &params);
1805 #endif /* CONFIG_HT_OVERRIDES */
1806 #ifdef CONFIG_VHT_OVERRIDES
1807 os_memset(&vhtcaps, 0, sizeof(vhtcaps));
1808 os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
1809 params.vhtcaps = &vhtcaps;
1810 params.vhtcaps_mask = &vhtcaps_mask;
1811 wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, &params);
1812 #endif /* CONFIG_VHT_OVERRIDES */
1813 #ifdef CONFIG_IEEE80211R
1814 if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies &&
1815 get_ie(wpa_s->sme.ft_ies, wpa_s->sme.ft_ies_len,
1816 WLAN_EID_RIC_DATA)) {
1817 /* There seems to be a pretty inconvenient bug in the Linux
1818 * kernel IE splitting functionality when RIC is used. For now,
1819 * skip correct behavior in IE construction here (i.e., drop the
1820 * additional non-FT-specific IEs) to avoid kernel issues. This
1821 * is fine since RIC is used only for testing purposes in the
1822 * current implementation. */
1823 wpa_printf(MSG_INFO,
1824 "SME: Linux kernel workaround - do not try to include additional IEs with RIC");
1825 params.wpa_ie = wpa_s->sme.ft_ies;
1826 params.wpa_ie_len = wpa_s->sme.ft_ies_len;
1827 } else if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
1828 const u8 *rm_en, *pos, *end;
1829 size_t rm_en_len = 0;
1830 u8 *rm_en_dup = NULL, *wpos;
1831
1832 /* Remove RSNE, MDE, FTE to allow them to be overridden with
1833 * FT specific values */
1834 remove_ie(wpa_s->sme.assoc_req_ie,
1835 &wpa_s->sme.assoc_req_ie_len,
1836 WLAN_EID_RSN);
1837 remove_ie(wpa_s->sme.assoc_req_ie,
1838 &wpa_s->sme.assoc_req_ie_len,
1839 WLAN_EID_MOBILITY_DOMAIN);
1840 remove_ie(wpa_s->sme.assoc_req_ie,
1841 &wpa_s->sme.assoc_req_ie_len,
1842 WLAN_EID_FAST_BSS_TRANSITION);
1843 rm_en = get_ie(wpa_s->sme.assoc_req_ie,
1844 wpa_s->sme.assoc_req_ie_len,
1845 WLAN_EID_RRM_ENABLED_CAPABILITIES);
1846 if (rm_en) {
1847 /* Need to remove RM Enabled Capabilities element as
1848 * well temporarily, so that it can be placed between
1849 * RSNE and MDE. */
1850 rm_en_len = 2 + rm_en[1];
1851 rm_en_dup = os_memdup(rm_en, rm_en_len);
1852 remove_ie(wpa_s->sme.assoc_req_ie,
1853 &wpa_s->sme.assoc_req_ie_len,
1854 WLAN_EID_RRM_ENABLED_CAPABILITIES);
1855 }
1856 wpa_hexdump(MSG_DEBUG,
1857 "SME: Association Request IEs after FT IE removal",
1858 wpa_s->sme.assoc_req_ie,
1859 wpa_s->sme.assoc_req_ie_len);
1860 if (wpa_s->sme.assoc_req_ie_len + wpa_s->sme.ft_ies_len +
1861 rm_en_len > sizeof(wpa_s->sme.assoc_req_ie)) {
1862 wpa_printf(MSG_ERROR,
1863 "SME: Not enough buffer room for FT IEs in Association Request frame");
1864 os_free(rm_en_dup);
1865 return;
1866 }
1867
1868 os_memmove(wpa_s->sme.assoc_req_ie + wpa_s->sme.ft_ies_len +
1869 rm_en_len,
1870 wpa_s->sme.assoc_req_ie,
1871 wpa_s->sme.assoc_req_ie_len);
1872 pos = wpa_s->sme.ft_ies;
1873 end = pos + wpa_s->sme.ft_ies_len;
1874 wpos = wpa_s->sme.assoc_req_ie;
1875 if (*pos == WLAN_EID_RSN) {
1876 os_memcpy(wpos, pos, 2 + pos[1]);
1877 wpos += 2 + pos[1];
1878 pos += 2 + pos[1];
1879 }
1880 if (rm_en_dup) {
1881 os_memcpy(wpos, rm_en_dup, rm_en_len);
1882 wpos += rm_en_len;
1883 os_free(rm_en_dup);
1884 }
1885 os_memcpy(wpos, pos, end - pos);
1886 wpa_s->sme.assoc_req_ie_len += wpa_s->sme.ft_ies_len +
1887 rm_en_len;
1888 params.wpa_ie = wpa_s->sme.assoc_req_ie;
1889 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
1890 wpa_hexdump(MSG_DEBUG,
1891 "SME: Association Request IEs after FT override",
1892 params.wpa_ie, params.wpa_ie_len);
1893 }
1894 #endif /* CONFIG_IEEE80211R */
1895 params.mode = mode;
1896 params.mgmt_frame_protection = wpa_s->sme.mfp;
1897 params.rrm_used = wpa_s->rrm.rrm_used;
1898 if (wpa_s->sme.prev_bssid_set)
1899 params.prev_bssid = wpa_s->sme.prev_bssid;
1900
1901 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
1902 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
1903 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
1904 params.freq.freq);
1905
1906 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
1907
1908 if (params.wpa_ie == NULL ||
1909 ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
1910 < 0) {
1911 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
1912 os_memset(&elems, 0, sizeof(elems));
1913 }
1914 if (elems.rsn_ie) {
1915 params.wpa_proto = WPA_PROTO_RSN;
1916 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
1917 elems.rsn_ie_len + 2);
1918 } else if (elems.wpa_ie) {
1919 params.wpa_proto = WPA_PROTO_WPA;
1920 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
1921 elems.wpa_ie_len + 2);
1922 } else if (elems.osen) {
1923 params.wpa_proto = WPA_PROTO_OSEN;
1924 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2,
1925 elems.osen_len + 2);
1926 } else
1927 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1928 if (elems.rsnxe)
1929 wpa_sm_set_assoc_rsnxe(wpa_s->wpa, elems.rsnxe - 2,
1930 elems.rsnxe_len + 2);
1931 else
1932 wpa_sm_set_assoc_rsnxe(wpa_s->wpa, NULL, 0);
1933 if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
1934 params.p2p = 1;
1935
1936 if (wpa_s->p2pdev->set_sta_uapsd)
1937 params.uapsd = wpa_s->p2pdev->sta_uapsd;
1938 else
1939 params.uapsd = -1;
1940
1941 if (wpa_drv_associate(wpa_s, &params) < 0) {
1942 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
1943 "driver failed");
1944 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1945 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1946 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1947 return;
1948 }
1949
1950 eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
1951 NULL);
1952
1953 #ifdef CONFIG_TESTING_OPTIONS
1954 wpabuf_free(wpa_s->last_assoc_req_wpa_ie);
1955 wpa_s->last_assoc_req_wpa_ie = NULL;
1956 if (params.wpa_ie)
1957 wpa_s->last_assoc_req_wpa_ie =
1958 wpabuf_alloc_copy(params.wpa_ie, params.wpa_ie_len);
1959 #endif /* CONFIG_TESTING_OPTIONS */
1960 }
1961
1962
1963 int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
1964 const u8 *ies, size_t ies_len)
1965 {
1966 if (md == NULL || ies == NULL) {
1967 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
1968 os_free(wpa_s->sme.ft_ies);
1969 wpa_s->sme.ft_ies = NULL;
1970 wpa_s->sme.ft_ies_len = 0;
1971 wpa_s->sme.ft_used = 0;
1972 return 0;
1973 }
1974
1975 os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
1976 wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
1977 os_free(wpa_s->sme.ft_ies);
1978 wpa_s->sme.ft_ies = os_memdup(ies, ies_len);
1979 if (wpa_s->sme.ft_ies == NULL)
1980 return -1;
1981 wpa_s->sme.ft_ies_len = ies_len;
1982 return 0;
1983 }
1984
1985
1986 static void sme_deauth(struct wpa_supplicant *wpa_s)
1987 {
1988 int bssid_changed;
1989
1990 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
1991
1992 if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
1993 WLAN_REASON_DEAUTH_LEAVING) < 0) {
1994 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
1995 "failed");
1996 }
1997 wpa_s->sme.prev_bssid_set = 0;
1998
1999 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
2000 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2001 os_memset(wpa_s->bssid, 0, ETH_ALEN);
2002 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
2003 if (bssid_changed)
2004 wpas_notify_bssid_changed(wpa_s);
2005 }
2006
2007
2008 void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
2009 union wpa_event_data *data)
2010 {
2011 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
2012 "status code %d", MAC2STR(wpa_s->pending_bssid),
2013 data->assoc_reject.status_code);
2014
2015 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
2016
2017 #ifdef CONFIG_SAE
2018 if (wpa_s->sme.sae_pmksa_caching && wpa_s->current_ssid &&
2019 wpa_key_mgmt_sae(wpa_s->current_ssid->key_mgmt)) {
2020 wpa_dbg(wpa_s, MSG_DEBUG,
2021 "PMKSA caching attempt rejected - drop PMKSA cache entry and fall back to SAE authentication");
2022 wpa_sm_aborted_cached(wpa_s->wpa);
2023 wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid);
2024 if (wpa_s->current_bss) {
2025 struct wpa_bss *bss = wpa_s->current_bss;
2026 struct wpa_ssid *ssid = wpa_s->current_ssid;
2027
2028 wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
2029 WLAN_REASON_DEAUTH_LEAVING);
2030 wpas_connect_work_done(wpa_s);
2031 wpa_supplicant_mark_disassoc(wpa_s);
2032 wpa_supplicant_connect(wpa_s, bss, ssid);
2033 return;
2034 }
2035 }
2036 #endif /* CONFIG_SAE */
2037
2038 /*
2039 * For now, unconditionally terminate the previous authentication. In
2040 * theory, this should not be needed, but mac80211 gets quite confused
2041 * if the authentication is left pending.. Some roaming cases might
2042 * benefit from using the previous authentication, so this could be
2043 * optimized in the future.
2044 */
2045 sme_deauth(wpa_s);
2046 }
2047
2048
2049 void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
2050 union wpa_event_data *data)
2051 {
2052 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
2053 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
2054 wpa_supplicant_mark_disassoc(wpa_s);
2055 }
2056
2057
2058 void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
2059 union wpa_event_data *data)
2060 {
2061 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
2062 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
2063 wpa_supplicant_mark_disassoc(wpa_s);
2064 }
2065
2066
2067 void sme_event_disassoc(struct wpa_supplicant *wpa_s,
2068 struct disassoc_info *info)
2069 {
2070 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
2071 if (wpa_s->sme.prev_bssid_set) {
2072 /*
2073 * cfg80211/mac80211 can get into somewhat confused state if
2074 * the AP only disassociates us and leaves us in authenticated
2075 * state. For now, force the state to be cleared to avoid
2076 * confusing errors if we try to associate with the AP again.
2077 */
2078 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
2079 "driver state");
2080 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
2081 WLAN_REASON_DEAUTH_LEAVING);
2082 }
2083 }
2084
2085
2086 static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
2087 {
2088 struct wpa_supplicant *wpa_s = eloop_ctx;
2089 if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
2090 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
2091 sme_deauth(wpa_s);
2092 }
2093 }
2094
2095
2096 static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
2097 {
2098 struct wpa_supplicant *wpa_s = eloop_ctx;
2099 if (wpa_s->wpa_state == WPA_ASSOCIATING) {
2100 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
2101 sme_deauth(wpa_s);
2102 }
2103 }
2104
2105
2106 void sme_state_changed(struct wpa_supplicant *wpa_s)
2107 {
2108 /* Make sure timers are cleaned up appropriately. */
2109 if (wpa_s->wpa_state != WPA_ASSOCIATING)
2110 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
2111 if (wpa_s->wpa_state != WPA_AUTHENTICATING)
2112 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
2113 }
2114
2115
2116 void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
2117 const u8 *prev_pending_bssid)
2118 {
2119 /*
2120 * mac80211-workaround to force deauth on failed auth cmd,
2121 * requires us to remain in authenticating state to allow the
2122 * second authentication attempt to be continued properly.
2123 */
2124 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
2125 "to proceed after disconnection event");
2126 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
2127 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
2128
2129 /*
2130 * Re-arm authentication timer in case auth fails for whatever reason.
2131 */
2132 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
2133 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
2134 NULL);
2135 }
2136
2137
2138 void sme_clear_on_disassoc(struct wpa_supplicant *wpa_s)
2139 {
2140 wpa_s->sme.prev_bssid_set = 0;
2141 #ifdef CONFIG_SAE
2142 wpabuf_free(wpa_s->sme.sae_token);
2143 wpa_s->sme.sae_token = NULL;
2144 sae_clear_data(&wpa_s->sme.sae);
2145 #endif /* CONFIG_SAE */
2146 #ifdef CONFIG_IEEE80211R
2147 if (wpa_s->sme.ft_ies || wpa_s->sme.ft_used)
2148 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
2149 #endif /* CONFIG_IEEE80211R */
2150 sme_stop_sa_query(wpa_s);
2151 }
2152
2153
2154 void sme_deinit(struct wpa_supplicant *wpa_s)
2155 {
2156 sme_clear_on_disassoc(wpa_s);
2157 #ifdef CONFIG_SAE
2158 os_free(wpa_s->sme.sae_rejected_groups);
2159 wpa_s->sme.sae_rejected_groups = NULL;
2160 #endif /* CONFIG_SAE */
2161
2162 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
2163 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
2164 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
2165 }
2166
2167
2168 static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
2169 const u8 *chan_list, u8 num_channels,
2170 u8 num_intol)
2171 {
2172 struct ieee80211_2040_bss_coex_ie *bc_ie;
2173 struct ieee80211_2040_intol_chan_report *ic_report;
2174 struct wpabuf *buf;
2175
2176 wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR
2177 " (num_channels=%u num_intol=%u)",
2178 MAC2STR(wpa_s->bssid), num_channels, num_intol);
2179 wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels",
2180 chan_list, num_channels);
2181
2182 buf = wpabuf_alloc(2 + /* action.category + action_code */
2183 sizeof(struct ieee80211_2040_bss_coex_ie) +
2184 sizeof(struct ieee80211_2040_intol_chan_report) +
2185 num_channels);
2186 if (buf == NULL)
2187 return;
2188
2189 wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
2190 wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
2191
2192 bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
2193 bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
2194 bc_ie->length = 1;
2195 if (num_intol)
2196 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
2197
2198 if (num_channels > 0) {
2199 ic_report = wpabuf_put(buf, sizeof(*ic_report));
2200 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
2201 ic_report->length = num_channels + 1;
2202 ic_report->op_class = 0;
2203 os_memcpy(wpabuf_put(buf, num_channels), chan_list,
2204 num_channels);
2205 }
2206
2207 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
2208 wpa_s->own_addr, wpa_s->bssid,
2209 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
2210 wpa_msg(wpa_s, MSG_INFO,
2211 "SME: Failed to send 20/40 BSS Coexistence frame");
2212 }
2213
2214 wpabuf_free(buf);
2215 }
2216
2217
2218 int sme_proc_obss_scan(struct wpa_supplicant *wpa_s,
2219 struct wpa_scan_results *scan_res)
2220 {
2221 const u8 *ie;
2222 u8 chan_list[P2P_MAX_CHANNELS], channel;
2223 u8 num_channels = 0, num_intol = 0, i;
2224 size_t j;
2225 int pri_freq, sec_freq;
2226
2227 if (!wpa_s->sme.sched_obss_scan)
2228 return 0;
2229
2230 wpa_s->sme.sched_obss_scan = 0;
2231 if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
2232 return 1;
2233
2234 /*
2235 * Check whether AP uses regulatory triplet or channel triplet in
2236 * country info. Right now the operating class of the BSS channel
2237 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
2238 * based on the assumption that operating class triplet is not used in
2239 * beacon frame. If the First Channel Number/Operating Extension
2240 * Identifier octet has a positive integer value of 201 or greater,
2241 * then its operating class triplet.
2242 *
2243 * TODO: If Supported Operating Classes element is present in beacon
2244 * frame, have to lookup operating class in Annex E and fill them in
2245 * 2040 coex frame.
2246 */
2247 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
2248 if (ie && (ie[1] >= 6) && (ie[5] >= 201))
2249 return 1;
2250
2251 os_memset(chan_list, 0, sizeof(chan_list));
2252
2253 pri_freq = wpa_s->assoc_freq;
2254
2255 switch (wpa_s->sme.ht_sec_chan) {
2256 case HT_SEC_CHAN_ABOVE:
2257 sec_freq = pri_freq + 20;
2258 break;
2259 case HT_SEC_CHAN_BELOW:
2260 sec_freq = pri_freq - 20;
2261 break;
2262 case HT_SEC_CHAN_UNKNOWN:
2263 default:
2264 wpa_msg(wpa_s, MSG_WARNING,
2265 "Undefined secondary channel: drop OBSS scan results");
2266 return 1;
2267 }
2268
2269 for (j = 0; j < scan_res->num; j++) {
2270 struct wpa_scan_res *bss = scan_res->res[j];
2271 enum hostapd_hw_mode mode;
2272 int res;
2273
2274 /* Skip other band bss */
2275 mode = ieee80211_freq_to_chan(bss->freq, &channel);
2276 if (mode != HOSTAPD_MODE_IEEE80211G &&
2277 mode != HOSTAPD_MODE_IEEE80211B)
2278 continue;
2279
2280 res = check_bss_coex_40mhz(bss, pri_freq, sec_freq);
2281 if (res) {
2282 if (res == 2)
2283 num_intol++;
2284
2285 /* Check whether the channel is already considered */
2286 for (i = 0; i < num_channels; i++) {
2287 if (channel == chan_list[i])
2288 break;
2289 }
2290 if (i != num_channels)
2291 continue;
2292
2293 chan_list[num_channels++] = channel;
2294 }
2295 }
2296
2297 sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
2298 return 1;
2299 }
2300
2301
2302 static void wpa_obss_scan_freqs_list(struct wpa_supplicant *wpa_s,
2303 struct wpa_driver_scan_params *params)
2304 {
2305 /* Include only affected channels */
2306 struct hostapd_hw_modes *mode;
2307 int count, i;
2308 int start, end;
2309
2310 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
2311 HOSTAPD_MODE_IEEE80211G);
2312 if (mode == NULL) {
2313 /* No channels supported in this band - use empty list */
2314 params->freqs = os_zalloc(sizeof(int));
2315 return;
2316 }
2317
2318 if (wpa_s->sme.ht_sec_chan == HT_SEC_CHAN_UNKNOWN &&
2319 wpa_s->current_bss) {
2320 const u8 *ie;
2321
2322 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_OPERATION);
2323 if (ie && ie[1] >= 2) {
2324 u8 o;
2325
2326 o = ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK;
2327 if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
2328 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_ABOVE;
2329 else if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
2330 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_BELOW;
2331 }
2332 }
2333
2334 start = wpa_s->assoc_freq - 10;
2335 end = wpa_s->assoc_freq + 10;
2336 switch (wpa_s->sme.ht_sec_chan) {
2337 case HT_SEC_CHAN_UNKNOWN:
2338 /* HT40+ possible on channels 1..9 */
2339 if (wpa_s->assoc_freq <= 2452)
2340 start -= 20;
2341 /* HT40- possible on channels 5-13 */
2342 if (wpa_s->assoc_freq >= 2432)
2343 end += 20;
2344 break;
2345 case HT_SEC_CHAN_ABOVE:
2346 end += 20;
2347 break;
2348 case HT_SEC_CHAN_BELOW:
2349 start -= 20;
2350 break;
2351 }
2352 wpa_printf(MSG_DEBUG,
2353 "OBSS: assoc_freq %d possible affected range %d-%d",
2354 wpa_s->assoc_freq, start, end);
2355
2356 params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
2357 if (params->freqs == NULL)
2358 return;
2359 for (count = 0, i = 0; i < mode->num_channels; i++) {
2360 int freq;
2361
2362 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
2363 continue;
2364 freq = mode->channels[i].freq;
2365 if (freq - 10 >= end || freq + 10 <= start)
2366 continue; /* not affected */
2367 params->freqs[count++] = freq;
2368 }
2369 }
2370
2371
2372 static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
2373 {
2374 struct wpa_supplicant *wpa_s = eloop_ctx;
2375 struct wpa_driver_scan_params params;
2376
2377 if (!wpa_s->current_bss) {
2378 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
2379 return;
2380 }
2381
2382 os_memset(&params, 0, sizeof(params));
2383 wpa_obss_scan_freqs_list(wpa_s, &params);
2384 params.low_priority = 1;
2385 wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
2386
2387 if (wpa_supplicant_trigger_scan(wpa_s, &params))
2388 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
2389 else
2390 wpa_s->sme.sched_obss_scan = 1;
2391 os_free(params.freqs);
2392
2393 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
2394 sme_obss_scan_timeout, wpa_s, NULL);
2395 }
2396
2397
2398 void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
2399 {
2400 const u8 *ie;
2401 struct wpa_bss *bss = wpa_s->current_bss;
2402 struct wpa_ssid *ssid = wpa_s->current_ssid;
2403 struct hostapd_hw_modes *hw_mode = NULL;
2404 int i;
2405
2406 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
2407 wpa_s->sme.sched_obss_scan = 0;
2408 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_UNKNOWN;
2409 if (!enable)
2410 return;
2411
2412 /*
2413 * Schedule OBSS scan if driver is using station SME in wpa_supplicant
2414 * or it expects OBSS scan to be performed by wpa_supplicant.
2415 */
2416 if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
2417 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
2418 ssid == NULL || ssid->mode != WPAS_MODE_INFRA)
2419 return;
2420
2421 if (!wpa_s->hw.modes)
2422 return;
2423
2424 /* only HT caps in 11g mode are relevant */
2425 for (i = 0; i < wpa_s->hw.num_modes; i++) {
2426 hw_mode = &wpa_s->hw.modes[i];
2427 if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
2428 break;
2429 }
2430
2431 /* Driver does not support HT40 for 11g or doesn't have 11g. */
2432 if (i == wpa_s->hw.num_modes || !hw_mode ||
2433 !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
2434 return;
2435
2436 if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
2437 return; /* Not associated on 2.4 GHz band */
2438
2439 /* Check whether AP supports HT40 */
2440 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
2441 if (!ie || ie[1] < 2 ||
2442 !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
2443 return; /* AP does not support HT40 */
2444
2445 ie = wpa_bss_get_ie(wpa_s->current_bss,
2446 WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
2447 if (!ie || ie[1] < 14)
2448 return; /* AP does not request OBSS scans */
2449
2450 wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
2451 if (wpa_s->sme.obss_scan_int < 10) {
2452 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
2453 "replaced with the minimum 10 sec",
2454 wpa_s->sme.obss_scan_int);
2455 wpa_s->sme.obss_scan_int = 10;
2456 }
2457 wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
2458 wpa_s->sme.obss_scan_int);
2459 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
2460 sme_obss_scan_timeout, wpa_s, NULL);
2461 }
2462
2463
2464 static const unsigned int sa_query_max_timeout = 1000;
2465 static const unsigned int sa_query_retry_timeout = 201;
2466 static const unsigned int sa_query_ch_switch_max_delay = 5000; /* in usec */
2467
2468 static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
2469 {
2470 u32 tu;
2471 struct os_reltime now, passed;
2472 os_get_reltime(&now);
2473 os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed);
2474 tu = (passed.sec * 1000000 + passed.usec) / 1024;
2475 if (sa_query_max_timeout < tu) {
2476 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
2477 sme_stop_sa_query(wpa_s);
2478 wpa_supplicant_deauthenticate(
2479 wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
2480 return 1;
2481 }
2482
2483 return 0;
2484 }
2485
2486
2487 static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
2488 const u8 *trans_id)
2489 {
2490 u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN + OCV_OCI_EXTENDED_LEN];
2491 u8 req_len = 2 + WLAN_SA_QUERY_TR_ID_LEN;
2492
2493 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
2494 MACSTR, MAC2STR(wpa_s->bssid));
2495 wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
2496 trans_id, WLAN_SA_QUERY_TR_ID_LEN);
2497 req[0] = WLAN_ACTION_SA_QUERY;
2498 req[1] = WLAN_SA_QUERY_REQUEST;
2499 os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
2500
2501 #ifdef CONFIG_OCV
2502 if (wpa_sm_ocv_enabled(wpa_s->wpa)) {
2503 struct wpa_channel_info ci;
2504
2505 if (wpa_drv_channel_info(wpa_s, &ci) != 0) {
2506 wpa_printf(MSG_WARNING,
2507 "Failed to get channel info for OCI element in SA Query Request frame");
2508 return;
2509 }
2510
2511 if (ocv_insert_extended_oci(&ci, req + req_len) < 0)
2512 return;
2513
2514 req_len += OCV_OCI_EXTENDED_LEN;
2515 }
2516 #endif /* CONFIG_OCV */
2517
2518 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
2519 wpa_s->own_addr, wpa_s->bssid,
2520 req, req_len, 0) < 0)
2521 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
2522 "Request");
2523 }
2524
2525
2526 static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
2527 {
2528 struct wpa_supplicant *wpa_s = eloop_ctx;
2529 unsigned int timeout, sec, usec;
2530 u8 *trans_id, *nbuf;
2531
2532 if (wpa_s->sme.sa_query_count > 0 &&
2533 sme_check_sa_query_timeout(wpa_s))
2534 return;
2535
2536 nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
2537 wpa_s->sme.sa_query_count + 1,
2538 WLAN_SA_QUERY_TR_ID_LEN);
2539 if (nbuf == NULL) {
2540 sme_stop_sa_query(wpa_s);
2541 return;
2542 }
2543 if (wpa_s->sme.sa_query_count == 0) {
2544 /* Starting a new SA Query procedure */
2545 os_get_reltime(&wpa_s->sme.sa_query_start);
2546 }
2547 trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
2548 wpa_s->sme.sa_query_trans_id = nbuf;
2549 wpa_s->sme.sa_query_count++;
2550
2551 if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) {
2552 wpa_printf(MSG_DEBUG, "Could not generate SA Query ID");
2553 sme_stop_sa_query(wpa_s);
2554 return;
2555 }
2556
2557 timeout = sa_query_retry_timeout;
2558 sec = ((timeout / 1000) * 1024) / 1000;
2559 usec = (timeout % 1000) * 1024;
2560 eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
2561
2562 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
2563 wpa_s->sme.sa_query_count);
2564
2565 sme_send_sa_query_req(wpa_s, trans_id);
2566 }
2567
2568
2569 static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
2570 {
2571 sme_sa_query_timer(wpa_s, NULL);
2572 }
2573
2574
2575 static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
2576 {
2577 if (wpa_s->sme.sa_query_trans_id)
2578 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Stop SA Query");
2579 eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
2580 os_free(wpa_s->sme.sa_query_trans_id);
2581 wpa_s->sme.sa_query_trans_id = NULL;
2582 wpa_s->sme.sa_query_count = 0;
2583 }
2584
2585
2586 void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
2587 const u8 *da, u16 reason_code)
2588 {
2589 struct wpa_ssid *ssid;
2590 struct os_reltime now;
2591
2592 if (wpa_s->wpa_state != WPA_COMPLETED)
2593 return;
2594 ssid = wpa_s->current_ssid;
2595 if (wpas_get_ssid_pmf(wpa_s, ssid) == NO_MGMT_FRAME_PROTECTION)
2596 return;
2597 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
2598 return;
2599 if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
2600 reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
2601 return;
2602 if (wpa_s->sme.sa_query_count > 0)
2603 return;
2604
2605 os_get_reltime(&now);
2606 if (wpa_s->sme.last_unprot_disconnect.sec &&
2607 !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10))
2608 return; /* limit SA Query procedure frequency */
2609 wpa_s->sme.last_unprot_disconnect = now;
2610
2611 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
2612 "possible AP/STA state mismatch - trigger SA Query");
2613 sme_start_sa_query(wpa_s);
2614 }
2615
2616
2617 void sme_event_ch_switch(struct wpa_supplicant *wpa_s)
2618 {
2619 unsigned int usec;
2620 u32 _rand;
2621
2622 if (wpa_s->wpa_state != WPA_COMPLETED ||
2623 !wpa_sm_ocv_enabled(wpa_s->wpa))
2624 return;
2625
2626 wpa_dbg(wpa_s, MSG_DEBUG,
2627 "SME: Channel switch completed - trigger new SA Query to verify new operating channel");
2628 sme_stop_sa_query(wpa_s);
2629
2630 if (os_get_random((u8 *) &_rand, sizeof(_rand)) < 0)
2631 _rand = os_random();
2632 usec = _rand % (sa_query_ch_switch_max_delay + 1);
2633 eloop_register_timeout(0, usec, sme_sa_query_timer, wpa_s, NULL);
2634 }
2635
2636
2637 static void sme_process_sa_query_request(struct wpa_supplicant *wpa_s,
2638 const u8 *sa, const u8 *data,
2639 size_t len)
2640 {
2641 u8 resp[2 + WLAN_SA_QUERY_TR_ID_LEN + OCV_OCI_EXTENDED_LEN];
2642 u8 resp_len = 2 + WLAN_SA_QUERY_TR_ID_LEN;
2643
2644 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Response to "
2645 MACSTR, MAC2STR(wpa_s->bssid));
2646
2647 resp[0] = WLAN_ACTION_SA_QUERY;
2648 resp[1] = WLAN_SA_QUERY_RESPONSE;
2649 os_memcpy(resp + 2, data + 1, WLAN_SA_QUERY_TR_ID_LEN);
2650
2651 #ifdef CONFIG_OCV
2652 if (wpa_sm_ocv_enabled(wpa_s->wpa)) {
2653 struct wpa_channel_info ci;
2654
2655 if (wpa_drv_channel_info(wpa_s, &ci) != 0) {
2656 wpa_printf(MSG_WARNING,
2657 "Failed to get channel info for OCI element in SA Query Response frame");
2658 return;
2659 }
2660
2661 if (ocv_insert_extended_oci(&ci, resp + resp_len) < 0)
2662 return;
2663
2664 resp_len += OCV_OCI_EXTENDED_LEN;
2665 }
2666 #endif /* CONFIG_OCV */
2667
2668 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
2669 wpa_s->own_addr, wpa_s->bssid,
2670 resp, resp_len, 0) < 0)
2671 wpa_msg(wpa_s, MSG_INFO,
2672 "SME: Failed to send SA Query Response");
2673 }
2674
2675
2676 static void sme_process_sa_query_response(struct wpa_supplicant *wpa_s,
2677 const u8 *sa, const u8 *data,
2678 size_t len)
2679 {
2680 int i;
2681
2682 if (!wpa_s->sme.sa_query_trans_id)
2683 return;
2684
2685 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
2686 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
2687
2688 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
2689 return;
2690
2691 for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
2692 if (os_memcmp(wpa_s->sme.sa_query_trans_id +
2693 i * WLAN_SA_QUERY_TR_ID_LEN,
2694 data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
2695 break;
2696 }
2697
2698 if (i >= wpa_s->sme.sa_query_count) {
2699 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
2700 "transaction identifier found");
2701 return;
2702 }
2703
2704 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
2705 "from " MACSTR, MAC2STR(sa));
2706 sme_stop_sa_query(wpa_s);
2707 }
2708
2709
2710 void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
2711 const u8 *data, size_t len)
2712 {
2713 if (len < 1 + WLAN_SA_QUERY_TR_ID_LEN)
2714 return;
2715
2716 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query frame from "
2717 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
2718
2719 #ifdef CONFIG_OCV
2720 if (wpa_sm_ocv_enabled(wpa_s->wpa)) {
2721 struct ieee802_11_elems elems;
2722 struct wpa_channel_info ci;
2723
2724 if (ieee802_11_parse_elems(data + 1 + WLAN_SA_QUERY_TR_ID_LEN,
2725 len - 1 - WLAN_SA_QUERY_TR_ID_LEN,
2726 &elems, 1) == ParseFailed) {
2727 wpa_printf(MSG_DEBUG,
2728 "SA Query: Failed to parse elements");
2729 return;
2730 }
2731
2732 if (wpa_drv_channel_info(wpa_s, &ci) != 0) {
2733 wpa_printf(MSG_WARNING,
2734 "Failed to get channel info to validate received OCI in SA Query Action frame");
2735 return;
2736 }
2737
2738 if (ocv_verify_tx_params(elems.oci, elems.oci_len, &ci,
2739 channel_width_to_int(ci.chanwidth),
2740 ci.seg1_idx) != 0) {
2741 wpa_printf(MSG_WARNING, "%s", ocv_errorstr);
2742 return;
2743 }
2744 }
2745 #endif /* CONFIG_OCV */
2746
2747 if (data[0] == WLAN_SA_QUERY_REQUEST)
2748 sme_process_sa_query_request(wpa_s, sa, data, len);
2749 else if (data[0] == WLAN_SA_QUERY_RESPONSE)
2750 sme_process_sa_query_response(wpa_s, sa, data, len);
2751 }
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