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Do not clear FT IEs twice in sme_deinit()
[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 void 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 return;
944
945 wpa_s->sme.sae.state = SAE_COMMITTED;
946 buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + wpabuf_len(resp));
947 if (!buf) {
948 wpabuf_free(resp);
949 return;
950 }
951
952 wpa_s->sme.seq_num++;
953 sme_external_auth_build_buf(buf, resp, wpa_s->own_addr,
954 bssid, 1, wpa_s->sme.seq_num);
955 wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 0);
956 wpabuf_free(resp);
957 wpabuf_free(buf);
958 }
959
960
961 static void sme_send_external_auth_status(struct wpa_supplicant *wpa_s,
962 u16 status)
963 {
964 struct external_auth params;
965
966 os_memset(&params, 0, sizeof(params));
967 params.status = status;
968 params.ssid = wpa_s->sme.ext_auth.ssid;
969 params.ssid_len = wpa_s->sme.ext_auth.ssid_len;
970 params.bssid = wpa_s->sme.ext_auth.bssid;
971 wpa_drv_send_external_auth_status(wpa_s, &params);
972 }
973
974
975 static void sme_handle_external_auth_start(struct wpa_supplicant *wpa_s,
976 union wpa_event_data *data)
977 {
978 struct wpa_ssid *ssid;
979 size_t ssid_str_len = data->external_auth.ssid_len;
980 const u8 *ssid_str = data->external_auth.ssid;
981
982 /* Get the SSID conf from the ssid string obtained */
983 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
984 if (!wpas_network_disabled(wpa_s, ssid) &&
985 ssid_str_len == ssid->ssid_len &&
986 os_memcmp(ssid_str, ssid->ssid, ssid_str_len) == 0 &&
987 (ssid->key_mgmt & (WPA_KEY_MGMT_SAE | WPA_KEY_MGMT_FT_SAE)))
988 break;
989 }
990 if (ssid)
991 sme_external_auth_send_sae_commit(wpa_s,
992 data->external_auth.bssid,
993 ssid);
994 else
995 sme_send_external_auth_status(wpa_s,
996 WLAN_STATUS_UNSPECIFIED_FAILURE);
997 }
998
999
1000 static void sme_external_auth_send_sae_confirm(struct wpa_supplicant *wpa_s,
1001 const u8 *da)
1002 {
1003 struct wpabuf *resp, *buf;
1004
1005 resp = sme_auth_build_sae_confirm(wpa_s, 1);
1006 if (!resp) {
1007 wpa_printf(MSG_DEBUG, "SAE: Confirm message buf alloc failure");
1008 return;
1009 }
1010
1011 wpa_s->sme.sae.state = SAE_CONFIRMED;
1012 buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN + wpabuf_len(resp));
1013 if (!buf) {
1014 wpa_printf(MSG_DEBUG, "SAE: Auth Confirm buf alloc failure");
1015 wpabuf_free(resp);
1016 return;
1017 }
1018 wpa_s->sme.seq_num++;
1019 sme_external_auth_build_buf(buf, resp, wpa_s->own_addr,
1020 da, 2, wpa_s->sme.seq_num);
1021 wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 0);
1022 wpabuf_free(resp);
1023 wpabuf_free(buf);
1024 }
1025
1026
1027 void sme_external_auth_trigger(struct wpa_supplicant *wpa_s,
1028 union wpa_event_data *data)
1029 {
1030 if (RSN_SELECTOR_GET(&data->external_auth.key_mgmt_suite) !=
1031 RSN_AUTH_KEY_MGMT_SAE)
1032 return;
1033
1034 if (data->external_auth.action == EXT_AUTH_START) {
1035 os_memcpy(&wpa_s->sme.ext_auth, data,
1036 sizeof(struct external_auth));
1037 wpa_s->sme.seq_num = 0;
1038 wpa_s->sme.sae.state = SAE_NOTHING;
1039 wpa_s->sme.sae.send_confirm = 0;
1040 wpa_s->sme.sae_group_index = 0;
1041 sme_handle_external_auth_start(wpa_s, data);
1042 } else if (data->external_auth.action == EXT_AUTH_ABORT) {
1043 /* Report failure to driver for the wrong trigger */
1044 sme_send_external_auth_status(wpa_s,
1045 WLAN_STATUS_UNSPECIFIED_FAILURE);
1046 }
1047 }
1048
1049
1050 static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
1051 u16 status_code, const u8 *data, size_t len,
1052 int external, const u8 *sa)
1053 {
1054 int *groups;
1055
1056 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
1057 "status code %u", auth_transaction, status_code);
1058
1059 if (auth_transaction == 1 &&
1060 status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
1061 wpa_s->sme.sae.state == SAE_COMMITTED &&
1062 (external || wpa_s->current_bss) && wpa_s->current_ssid) {
1063 int default_groups[] = { 19, 20, 21, 0 };
1064 u16 group;
1065
1066 groups = wpa_s->conf->sae_groups;
1067 if (!groups || groups[0] <= 0)
1068 groups = default_groups;
1069
1070 if (len < sizeof(le16)) {
1071 wpa_dbg(wpa_s, MSG_DEBUG,
1072 "SME: Too short SAE anti-clogging token request");
1073 return -1;
1074 }
1075 group = WPA_GET_LE16(data);
1076 wpa_dbg(wpa_s, MSG_DEBUG,
1077 "SME: SAE anti-clogging token requested (group %u)",
1078 group);
1079 if (sae_group_allowed(&wpa_s->sme.sae, groups, group) !=
1080 WLAN_STATUS_SUCCESS) {
1081 wpa_dbg(wpa_s, MSG_ERROR,
1082 "SME: SAE group %u of anti-clogging request is invalid",
1083 group);
1084 return -1;
1085 }
1086 wpabuf_free(wpa_s->sme.sae_token);
1087 wpa_s->sme.sae_token = wpabuf_alloc_copy(data + sizeof(le16),
1088 len - sizeof(le16));
1089 if (!external)
1090 sme_send_authentication(wpa_s, wpa_s->current_bss,
1091 wpa_s->current_ssid, 2);
1092 else
1093 sme_external_auth_send_sae_commit(
1094 wpa_s, wpa_s->sme.ext_auth.bssid,
1095 wpa_s->current_ssid);
1096 return 0;
1097 }
1098
1099 if (auth_transaction == 1 &&
1100 status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
1101 wpa_s->sme.sae.state == SAE_COMMITTED &&
1102 (external || wpa_s->current_bss) && wpa_s->current_ssid) {
1103 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
1104 wpa_s->sme.sae_group_index++;
1105 if (sme_set_sae_group(wpa_s) < 0)
1106 return -1; /* no other groups enabled */
1107 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
1108 if (!external)
1109 sme_send_authentication(wpa_s, wpa_s->current_bss,
1110 wpa_s->current_ssid, 1);
1111 else
1112 sme_external_auth_send_sae_commit(
1113 wpa_s, wpa_s->sme.ext_auth.bssid,
1114 wpa_s->current_ssid);
1115 return 0;
1116 }
1117
1118 if (auth_transaction == 1 &&
1119 status_code == WLAN_STATUS_UNKNOWN_PASSWORD_IDENTIFIER) {
1120 const u8 *bssid = sa ? sa : wpa_s->pending_bssid;
1121
1122 wpa_msg(wpa_s, MSG_INFO,
1123 WPA_EVENT_SAE_UNKNOWN_PASSWORD_IDENTIFIER MACSTR,
1124 MAC2STR(bssid));
1125 return -1;
1126 }
1127
1128 if (status_code != WLAN_STATUS_SUCCESS)
1129 return -1;
1130
1131 if (auth_transaction == 1) {
1132 u16 res;
1133
1134 groups = wpa_s->conf->sae_groups;
1135
1136 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
1137 if ((!external && wpa_s->current_bss == NULL) ||
1138 wpa_s->current_ssid == NULL)
1139 return -1;
1140 if (wpa_s->sme.sae.state != SAE_COMMITTED)
1141 return -1;
1142 if (groups && groups[0] <= 0)
1143 groups = NULL;
1144 res = sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
1145 groups);
1146 if (res == SAE_SILENTLY_DISCARD) {
1147 wpa_printf(MSG_DEBUG,
1148 "SAE: Drop commit message due to reflection attack");
1149 return 0;
1150 }
1151 if (res != WLAN_STATUS_SUCCESS)
1152 return -1;
1153
1154 if (sae_process_commit(&wpa_s->sme.sae) < 0) {
1155 wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
1156 "commit");
1157 return -1;
1158 }
1159
1160 wpabuf_free(wpa_s->sme.sae_token);
1161 wpa_s->sme.sae_token = NULL;
1162 if (!external)
1163 sme_send_authentication(wpa_s, wpa_s->current_bss,
1164 wpa_s->current_ssid, 0);
1165 else
1166 sme_external_auth_send_sae_confirm(wpa_s, sa);
1167 return 0;
1168 } else if (auth_transaction == 2) {
1169 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
1170 if (wpa_s->sme.sae.state != SAE_CONFIRMED)
1171 return -1;
1172 if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
1173 return -1;
1174 wpa_s->sme.sae.state = SAE_ACCEPTED;
1175 sae_clear_temp_data(&wpa_s->sme.sae);
1176
1177 if (external) {
1178 /* Report success to driver */
1179 sme_send_external_auth_status(wpa_s,
1180 WLAN_STATUS_SUCCESS);
1181 }
1182
1183 return 1;
1184 }
1185
1186 return -1;
1187 }
1188
1189
1190 void sme_external_auth_mgmt_rx(struct wpa_supplicant *wpa_s,
1191 const u8 *auth_frame, size_t len)
1192 {
1193 const struct ieee80211_mgmt *header;
1194 size_t auth_length;
1195
1196 header = (const struct ieee80211_mgmt *) auth_frame;
1197 auth_length = IEEE80211_HDRLEN + sizeof(header->u.auth);
1198
1199 if (len < auth_length) {
1200 /* Notify failure to the driver */
1201 sme_send_external_auth_status(wpa_s,
1202 WLAN_STATUS_UNSPECIFIED_FAILURE);
1203 return;
1204 }
1205
1206 if (le_to_host16(header->u.auth.auth_alg) == WLAN_AUTH_SAE) {
1207 int res;
1208
1209 res = sme_sae_auth(
1210 wpa_s, le_to_host16(header->u.auth.auth_transaction),
1211 le_to_host16(header->u.auth.status_code),
1212 header->u.auth.variable,
1213 len - auth_length, 1, header->sa);
1214 if (res < 0) {
1215 /* Notify failure to the driver */
1216 sme_send_external_auth_status(
1217 wpa_s, WLAN_STATUS_UNSPECIFIED_FAILURE);
1218 return;
1219 }
1220 if (res != 1)
1221 return;
1222
1223 wpa_printf(MSG_DEBUG,
1224 "SME: SAE completed - setting PMK for 4-way handshake");
1225 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN,
1226 wpa_s->sme.sae.pmkid, wpa_s->pending_bssid);
1227 }
1228 }
1229
1230 #endif /* CONFIG_SAE */
1231
1232
1233 void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
1234 {
1235 struct wpa_ssid *ssid = wpa_s->current_ssid;
1236
1237 if (ssid == NULL) {
1238 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
1239 "when network is not selected");
1240 return;
1241 }
1242
1243 if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
1244 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
1245 "when not in authenticating state");
1246 return;
1247 }
1248
1249 if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
1250 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
1251 "unexpected peer " MACSTR,
1252 MAC2STR(data->auth.peer));
1253 return;
1254 }
1255
1256 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
1257 " auth_type=%d auth_transaction=%d status_code=%d",
1258 MAC2STR(data->auth.peer), data->auth.auth_type,
1259 data->auth.auth_transaction, data->auth.status_code);
1260 wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
1261 data->auth.ies, data->auth.ies_len);
1262
1263 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1264
1265 #ifdef CONFIG_SAE
1266 if (data->auth.auth_type == WLAN_AUTH_SAE) {
1267 int res;
1268 res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
1269 data->auth.status_code, data->auth.ies,
1270 data->auth.ies_len, 0, NULL);
1271 if (res < 0) {
1272 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1273 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1274
1275 }
1276 if (res != 1)
1277 return;
1278
1279 wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for "
1280 "4-way handshake");
1281 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN,
1282 wpa_s->sme.sae.pmkid, wpa_s->pending_bssid);
1283 }
1284 #endif /* CONFIG_SAE */
1285
1286 if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
1287 char *ie_txt = NULL;
1288
1289 if (data->auth.ies && data->auth.ies_len) {
1290 size_t buflen = 2 * data->auth.ies_len + 1;
1291 ie_txt = os_malloc(buflen);
1292 if (ie_txt) {
1293 wpa_snprintf_hex(ie_txt, buflen, data->auth.ies,
1294 data->auth.ies_len);
1295 }
1296 }
1297 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AUTH_REJECT MACSTR
1298 " auth_type=%u auth_transaction=%u status_code=%u%s%s",
1299 MAC2STR(data->auth.peer), data->auth.auth_type,
1300 data->auth.auth_transaction, data->auth.status_code,
1301 ie_txt ? " ie=" : "",
1302 ie_txt ? ie_txt : "");
1303 os_free(ie_txt);
1304
1305 #ifdef CONFIG_FILS
1306 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FILS ||
1307 wpa_s->sme.auth_alg == WPA_AUTH_ALG_FILS_SK_PFS)
1308 fils_connection_failure(wpa_s);
1309 #endif /* CONFIG_FILS */
1310
1311 if (data->auth.status_code !=
1312 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
1313 wpa_s->sme.auth_alg == data->auth.auth_type ||
1314 wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
1315 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1316 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1317 return;
1318 }
1319
1320 wpas_connect_work_done(wpa_s);
1321
1322 switch (data->auth.auth_type) {
1323 case WLAN_AUTH_OPEN:
1324 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
1325
1326 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
1327 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
1328 wpa_s->current_ssid);
1329 return;
1330
1331 case WLAN_AUTH_SHARED_KEY:
1332 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
1333
1334 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
1335 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
1336 wpa_s->current_ssid);
1337 return;
1338
1339 default:
1340 return;
1341 }
1342 }
1343
1344 #ifdef CONFIG_IEEE80211R
1345 if (data->auth.auth_type == WLAN_AUTH_FT) {
1346 const u8 *ric_ies = NULL;
1347 size_t ric_ies_len = 0;
1348
1349 if (wpa_s->ric_ies) {
1350 ric_ies = wpabuf_head(wpa_s->ric_ies);
1351 ric_ies_len = wpabuf_len(wpa_s->ric_ies);
1352 }
1353 if (wpa_ft_process_response(wpa_s->wpa, data->auth.ies,
1354 data->auth.ies_len, 0,
1355 data->auth.peer,
1356 ric_ies, ric_ies_len) < 0) {
1357 wpa_dbg(wpa_s, MSG_DEBUG,
1358 "SME: FT Authentication response processing failed");
1359 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
1360 MACSTR
1361 " reason=%d locally_generated=1",
1362 MAC2STR(wpa_s->pending_bssid),
1363 WLAN_REASON_DEAUTH_LEAVING);
1364 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1365 wpa_supplicant_mark_disassoc(wpa_s);
1366 return;
1367 }
1368 }
1369 #endif /* CONFIG_IEEE80211R */
1370
1371 #ifdef CONFIG_FILS
1372 if (data->auth.auth_type == WLAN_AUTH_FILS_SK ||
1373 data->auth.auth_type == WLAN_AUTH_FILS_SK_PFS) {
1374 u16 expect_auth_type;
1375
1376 expect_auth_type = wpa_s->sme.auth_alg ==
1377 WPA_AUTH_ALG_FILS_SK_PFS ? WLAN_AUTH_FILS_SK_PFS :
1378 WLAN_AUTH_FILS_SK;
1379 if (data->auth.auth_type != expect_auth_type) {
1380 wpa_dbg(wpa_s, MSG_DEBUG,
1381 "SME: FILS Authentication response used different auth alg (%u; expected %u)",
1382 data->auth.auth_type, expect_auth_type);
1383 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
1384 MACSTR
1385 " reason=%d locally_generated=1",
1386 MAC2STR(wpa_s->pending_bssid),
1387 WLAN_REASON_DEAUTH_LEAVING);
1388 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1389 wpa_supplicant_mark_disassoc(wpa_s);
1390 return;
1391 }
1392
1393 if (fils_process_auth(wpa_s->wpa, wpa_s->pending_bssid,
1394 data->auth.ies, data->auth.ies_len) < 0) {
1395 wpa_dbg(wpa_s, MSG_DEBUG,
1396 "SME: FILS Authentication response processing failed");
1397 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
1398 MACSTR
1399 " reason=%d locally_generated=1",
1400 MAC2STR(wpa_s->pending_bssid),
1401 WLAN_REASON_DEAUTH_LEAVING);
1402 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1403 wpa_supplicant_mark_disassoc(wpa_s);
1404 return;
1405 }
1406 }
1407 #endif /* CONFIG_FILS */
1408
1409 sme_associate(wpa_s, ssid->mode, data->auth.peer,
1410 data->auth.auth_type);
1411 }
1412
1413
1414 #ifdef CONFIG_IEEE80211R
1415 static void remove_ie(u8 *buf, size_t *len, u8 eid)
1416 {
1417 u8 *pos, *next, *end;
1418
1419 pos = (u8 *) get_ie(buf, *len, eid);
1420 if (pos) {
1421 next = pos + 2 + pos[1];
1422 end = buf + *len;
1423 *len -= 2 + pos[1];
1424 os_memmove(pos, next, end - next);
1425 }
1426 }
1427 #endif /* CONFIG_IEEE80211R */
1428
1429
1430 void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
1431 const u8 *bssid, u16 auth_type)
1432 {
1433 struct wpa_driver_associate_params params;
1434 struct ieee802_11_elems elems;
1435 #ifdef CONFIG_FILS
1436 u8 nonces[2 * FILS_NONCE_LEN];
1437 #endif /* CONFIG_FILS */
1438 #ifdef CONFIG_HT_OVERRIDES
1439 struct ieee80211_ht_capabilities htcaps;
1440 struct ieee80211_ht_capabilities htcaps_mask;
1441 #endif /* CONFIG_HT_OVERRIDES */
1442 #ifdef CONFIG_VHT_OVERRIDES
1443 struct ieee80211_vht_capabilities vhtcaps;
1444 struct ieee80211_vht_capabilities vhtcaps_mask;
1445 #endif /* CONFIG_VHT_OVERRIDES */
1446
1447 os_memset(&params, 0, sizeof(params));
1448
1449 #ifdef CONFIG_FILS
1450 if (auth_type == WLAN_AUTH_FILS_SK ||
1451 auth_type == WLAN_AUTH_FILS_SK_PFS) {
1452 struct wpabuf *buf;
1453 const u8 *snonce, *anonce;
1454 const unsigned int max_hlp = 20;
1455 struct wpabuf *hlp[max_hlp];
1456 unsigned int i, num_hlp = 0;
1457 struct fils_hlp_req *req;
1458
1459 dl_list_for_each(req, &wpa_s->fils_hlp_req, struct fils_hlp_req,
1460 list) {
1461 hlp[num_hlp] = wpabuf_alloc(2 * ETH_ALEN + 6 +
1462 wpabuf_len(req->pkt));
1463 if (!hlp[num_hlp])
1464 break;
1465 wpabuf_put_data(hlp[num_hlp], req->dst, ETH_ALEN);
1466 wpabuf_put_data(hlp[num_hlp], wpa_s->own_addr,
1467 ETH_ALEN);
1468 wpabuf_put_data(hlp[num_hlp],
1469 "\xaa\xaa\x03\x00\x00\x00", 6);
1470 wpabuf_put_buf(hlp[num_hlp], req->pkt);
1471 num_hlp++;
1472 if (num_hlp >= max_hlp)
1473 break;
1474 }
1475
1476 buf = fils_build_assoc_req(wpa_s->wpa, &params.fils_kek,
1477 &params.fils_kek_len, &snonce,
1478 &anonce,
1479 (const struct wpabuf **) hlp,
1480 num_hlp);
1481 for (i = 0; i < num_hlp; i++)
1482 wpabuf_free(hlp[i]);
1483 if (!buf)
1484 return;
1485 wpa_hexdump(MSG_DEBUG, "FILS: assoc_req before FILS elements",
1486 wpa_s->sme.assoc_req_ie,
1487 wpa_s->sme.assoc_req_ie_len);
1488 #ifdef CONFIG_IEEE80211R
1489 if (wpa_key_mgmt_ft(wpa_s->key_mgmt)) {
1490 /* Remove RSNE and MDE to allow them to be overridden
1491 * with FILS+FT specific values from
1492 * fils_build_assoc_req(). */
1493 remove_ie(wpa_s->sme.assoc_req_ie,
1494 &wpa_s->sme.assoc_req_ie_len,
1495 WLAN_EID_RSN);
1496 wpa_hexdump(MSG_DEBUG,
1497 "FILS: assoc_req after RSNE removal",
1498 wpa_s->sme.assoc_req_ie,
1499 wpa_s->sme.assoc_req_ie_len);
1500 remove_ie(wpa_s->sme.assoc_req_ie,
1501 &wpa_s->sme.assoc_req_ie_len,
1502 WLAN_EID_MOBILITY_DOMAIN);
1503 wpa_hexdump(MSG_DEBUG,
1504 "FILS: assoc_req after MDE removal",
1505 wpa_s->sme.assoc_req_ie,
1506 wpa_s->sme.assoc_req_ie_len);
1507 }
1508 #endif /* CONFIG_IEEE80211R */
1509 /* TODO: Make wpa_s->sme.assoc_req_ie use dynamic allocation */
1510 if (wpa_s->sme.assoc_req_ie_len + wpabuf_len(buf) >
1511 sizeof(wpa_s->sme.assoc_req_ie)) {
1512 wpa_printf(MSG_ERROR,
1513 "FILS: Not enough buffer room for own AssocReq elements");
1514 wpabuf_free(buf);
1515 return;
1516 }
1517 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1518 wpabuf_head(buf), wpabuf_len(buf));
1519 wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf);
1520 wpabuf_free(buf);
1521 wpa_hexdump(MSG_DEBUG, "FILS: assoc_req after FILS elements",
1522 wpa_s->sme.assoc_req_ie,
1523 wpa_s->sme.assoc_req_ie_len);
1524
1525 os_memcpy(nonces, snonce, FILS_NONCE_LEN);
1526 os_memcpy(nonces + FILS_NONCE_LEN, anonce, FILS_NONCE_LEN);
1527 params.fils_nonces = nonces;
1528 params.fils_nonces_len = sizeof(nonces);
1529 }
1530 #endif /* CONFIG_FILS */
1531
1532 #ifdef CONFIG_OWE
1533 #ifdef CONFIG_TESTING_OPTIONS
1534 if (get_ie_ext(wpa_s->sme.assoc_req_ie, wpa_s->sme.assoc_req_ie_len,
1535 WLAN_EID_EXT_OWE_DH_PARAM)) {
1536 wpa_printf(MSG_INFO, "TESTING: Override OWE DH element");
1537 } else
1538 #endif /* CONFIG_TESTING_OPTIONS */
1539 if (auth_type == WLAN_AUTH_OPEN &&
1540 wpa_s->key_mgmt == WPA_KEY_MGMT_OWE) {
1541 struct wpabuf *owe_ie;
1542 u16 group;
1543
1544 if (wpa_s->current_ssid && wpa_s->current_ssid->owe_group) {
1545 group = wpa_s->current_ssid->owe_group;
1546 } else if (wpa_s->assoc_status_code ==
1547 WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED) {
1548 if (wpa_s->last_owe_group == 19)
1549 group = 20;
1550 else if (wpa_s->last_owe_group == 20)
1551 group = 21;
1552 else
1553 group = OWE_DH_GROUP;
1554 } else {
1555 group = OWE_DH_GROUP;
1556 }
1557
1558 wpa_s->last_owe_group = group;
1559 wpa_printf(MSG_DEBUG, "OWE: Try to use group %u", group);
1560 owe_ie = owe_build_assoc_req(wpa_s->wpa, group);
1561 if (!owe_ie) {
1562 wpa_printf(MSG_ERROR,
1563 "OWE: Failed to build IE for Association Request frame");
1564 return;
1565 }
1566 if (wpa_s->sme.assoc_req_ie_len + wpabuf_len(owe_ie) >
1567 sizeof(wpa_s->sme.assoc_req_ie)) {
1568 wpa_printf(MSG_ERROR,
1569 "OWE: Not enough buffer room for own Association Request frame elements");
1570 wpabuf_free(owe_ie);
1571 return;
1572 }
1573 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1574 wpabuf_head(owe_ie), wpabuf_len(owe_ie));
1575 wpa_s->sme.assoc_req_ie_len += wpabuf_len(owe_ie);
1576 wpabuf_free(owe_ie);
1577 }
1578 #endif /* CONFIG_OWE */
1579
1580 #ifdef CONFIG_DPP2
1581 if (wpa_s->key_mgmt == WPA_KEY_MGMT_DPP && wpa_s->current_ssid &&
1582 wpa_s->current_ssid->dpp_netaccesskey) {
1583 struct wpa_ssid *ssid = wpa_s->current_ssid;
1584
1585 dpp_pfs_free(wpa_s->dpp_pfs);
1586 wpa_s->dpp_pfs = dpp_pfs_init(ssid->dpp_netaccesskey,
1587 ssid->dpp_netaccesskey_len);
1588 if (!wpa_s->dpp_pfs) {
1589 wpa_printf(MSG_DEBUG, "DPP: Could not initialize PFS");
1590 /* Try to continue without PFS */
1591 goto pfs_fail;
1592 }
1593 if (wpa_s->sme.assoc_req_ie_len +
1594 wpabuf_len(wpa_s->dpp_pfs->ie) >
1595 sizeof(wpa_s->sme.assoc_req_ie)) {
1596 wpa_printf(MSG_ERROR,
1597 "DPP: Not enough buffer room for own Association Request frame elements");
1598 dpp_pfs_free(wpa_s->dpp_pfs);
1599 wpa_s->dpp_pfs = NULL;
1600 goto pfs_fail;
1601 }
1602 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1603 wpabuf_head(wpa_s->dpp_pfs->ie),
1604 wpabuf_len(wpa_s->dpp_pfs->ie));
1605 wpa_s->sme.assoc_req_ie_len += wpabuf_len(wpa_s->dpp_pfs->ie);
1606 }
1607 pfs_fail:
1608 #endif /* CONFIG_DPP2 */
1609
1610 if (wpa_s->current_ssid && wpa_s->current_ssid->multi_ap_backhaul_sta) {
1611 size_t multi_ap_ie_len;
1612
1613 multi_ap_ie_len = add_multi_ap_ie(
1614 wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1615 sizeof(wpa_s->sme.assoc_req_ie) -
1616 wpa_s->sme.assoc_req_ie_len,
1617 MULTI_AP_BACKHAUL_STA);
1618 if (multi_ap_ie_len == 0) {
1619 wpa_printf(MSG_ERROR,
1620 "Multi-AP: Failed to build Multi-AP IE");
1621 return;
1622 }
1623 wpa_s->sme.assoc_req_ie_len += multi_ap_ie_len;
1624 }
1625
1626 params.bssid = bssid;
1627 params.ssid = wpa_s->sme.ssid;
1628 params.ssid_len = wpa_s->sme.ssid_len;
1629 params.freq.freq = wpa_s->sme.freq;
1630 params.bg_scan_period = wpa_s->current_ssid ?
1631 wpa_s->current_ssid->bg_scan_period : -1;
1632 params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
1633 wpa_s->sme.assoc_req_ie : NULL;
1634 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
1635 wpa_hexdump(MSG_DEBUG, "SME: Association Request IEs",
1636 params.wpa_ie, params.wpa_ie_len);
1637 params.pairwise_suite = wpa_s->pairwise_cipher;
1638 params.group_suite = wpa_s->group_cipher;
1639 params.mgmt_group_suite = wpa_s->mgmt_group_cipher;
1640 params.key_mgmt_suite = wpa_s->key_mgmt;
1641 params.wpa_proto = wpa_s->wpa_proto;
1642 #ifdef CONFIG_HT_OVERRIDES
1643 os_memset(&htcaps, 0, sizeof(htcaps));
1644 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
1645 params.htcaps = (u8 *) &htcaps;
1646 params.htcaps_mask = (u8 *) &htcaps_mask;
1647 wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, &params);
1648 #endif /* CONFIG_HT_OVERRIDES */
1649 #ifdef CONFIG_VHT_OVERRIDES
1650 os_memset(&vhtcaps, 0, sizeof(vhtcaps));
1651 os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
1652 params.vhtcaps = &vhtcaps;
1653 params.vhtcaps_mask = &vhtcaps_mask;
1654 wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, &params);
1655 #endif /* CONFIG_VHT_OVERRIDES */
1656 #ifdef CONFIG_IEEE80211R
1657 if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies &&
1658 get_ie(wpa_s->sme.ft_ies, wpa_s->sme.ft_ies_len,
1659 WLAN_EID_RIC_DATA)) {
1660 /* There seems to be a pretty inconvenient bug in the Linux
1661 * kernel IE splitting functionality when RIC is used. For now,
1662 * skip correct behavior in IE construction here (i.e., drop the
1663 * additional non-FT-specific IEs) to avoid kernel issues. This
1664 * is fine since RIC is used only for testing purposes in the
1665 * current implementation. */
1666 wpa_printf(MSG_INFO,
1667 "SME: Linux kernel workaround - do not try to include additional IEs with RIC");
1668 params.wpa_ie = wpa_s->sme.ft_ies;
1669 params.wpa_ie_len = wpa_s->sme.ft_ies_len;
1670 } else if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
1671 const u8 *rm_en, *pos, *end;
1672 size_t rm_en_len = 0;
1673 u8 *rm_en_dup = NULL, *wpos;
1674
1675 /* Remove RSNE, MDE, FTE to allow them to be overridden with
1676 * FT specific values */
1677 remove_ie(wpa_s->sme.assoc_req_ie,
1678 &wpa_s->sme.assoc_req_ie_len,
1679 WLAN_EID_RSN);
1680 remove_ie(wpa_s->sme.assoc_req_ie,
1681 &wpa_s->sme.assoc_req_ie_len,
1682 WLAN_EID_MOBILITY_DOMAIN);
1683 remove_ie(wpa_s->sme.assoc_req_ie,
1684 &wpa_s->sme.assoc_req_ie_len,
1685 WLAN_EID_FAST_BSS_TRANSITION);
1686 rm_en = get_ie(wpa_s->sme.assoc_req_ie,
1687 wpa_s->sme.assoc_req_ie_len,
1688 WLAN_EID_RRM_ENABLED_CAPABILITIES);
1689 if (rm_en) {
1690 /* Need to remove RM Enabled Capabilities element as
1691 * well temporarily, so that it can be placed between
1692 * RSNE and MDE. */
1693 rm_en_len = 2 + rm_en[1];
1694 rm_en_dup = os_memdup(rm_en, rm_en_len);
1695 remove_ie(wpa_s->sme.assoc_req_ie,
1696 &wpa_s->sme.assoc_req_ie_len,
1697 WLAN_EID_RRM_ENABLED_CAPABILITIES);
1698 }
1699 wpa_hexdump(MSG_DEBUG,
1700 "SME: Association Request IEs after FT IE removal",
1701 wpa_s->sme.assoc_req_ie,
1702 wpa_s->sme.assoc_req_ie_len);
1703 if (wpa_s->sme.assoc_req_ie_len + wpa_s->sme.ft_ies_len +
1704 rm_en_len > sizeof(wpa_s->sme.assoc_req_ie)) {
1705 wpa_printf(MSG_ERROR,
1706 "SME: Not enough buffer room for FT IEs in Association Request frame");
1707 os_free(rm_en_dup);
1708 return;
1709 }
1710
1711 os_memmove(wpa_s->sme.assoc_req_ie + wpa_s->sme.ft_ies_len +
1712 rm_en_len,
1713 wpa_s->sme.assoc_req_ie,
1714 wpa_s->sme.assoc_req_ie_len);
1715 pos = wpa_s->sme.ft_ies;
1716 end = pos + wpa_s->sme.ft_ies_len;
1717 wpos = wpa_s->sme.assoc_req_ie;
1718 if (*pos == WLAN_EID_RSN) {
1719 os_memcpy(wpos, pos, 2 + pos[1]);
1720 wpos += 2 + pos[1];
1721 pos += 2 + pos[1];
1722 }
1723 if (rm_en_dup) {
1724 os_memcpy(wpos, rm_en_dup, rm_en_len);
1725 wpos += rm_en_len;
1726 os_free(rm_en_dup);
1727 }
1728 os_memcpy(wpos, pos, end - pos);
1729 wpa_s->sme.assoc_req_ie_len += wpa_s->sme.ft_ies_len +
1730 rm_en_len;
1731 params.wpa_ie = wpa_s->sme.assoc_req_ie;
1732 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
1733 wpa_hexdump(MSG_DEBUG,
1734 "SME: Association Request IEs after FT override",
1735 params.wpa_ie, params.wpa_ie_len);
1736 }
1737 #endif /* CONFIG_IEEE80211R */
1738 params.mode = mode;
1739 params.mgmt_frame_protection = wpa_s->sme.mfp;
1740 params.rrm_used = wpa_s->rrm.rrm_used;
1741 if (wpa_s->sme.prev_bssid_set)
1742 params.prev_bssid = wpa_s->sme.prev_bssid;
1743
1744 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
1745 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
1746 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
1747 params.freq.freq);
1748
1749 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
1750
1751 if (params.wpa_ie == NULL ||
1752 ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
1753 < 0) {
1754 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
1755 os_memset(&elems, 0, sizeof(elems));
1756 }
1757 if (elems.rsn_ie) {
1758 params.wpa_proto = WPA_PROTO_RSN;
1759 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
1760 elems.rsn_ie_len + 2);
1761 } else if (elems.wpa_ie) {
1762 params.wpa_proto = WPA_PROTO_WPA;
1763 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
1764 elems.wpa_ie_len + 2);
1765 } else if (elems.osen) {
1766 params.wpa_proto = WPA_PROTO_OSEN;
1767 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2,
1768 elems.osen_len + 2);
1769 } else
1770 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1771 if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
1772 params.p2p = 1;
1773
1774 if (wpa_s->p2pdev->set_sta_uapsd)
1775 params.uapsd = wpa_s->p2pdev->sta_uapsd;
1776 else
1777 params.uapsd = -1;
1778
1779 if (wpa_drv_associate(wpa_s, &params) < 0) {
1780 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
1781 "driver failed");
1782 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1783 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1784 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1785 return;
1786 }
1787
1788 eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
1789 NULL);
1790
1791 #ifdef CONFIG_TESTING_OPTIONS
1792 wpabuf_free(wpa_s->last_assoc_req_wpa_ie);
1793 wpa_s->last_assoc_req_wpa_ie = NULL;
1794 if (params.wpa_ie)
1795 wpa_s->last_assoc_req_wpa_ie =
1796 wpabuf_alloc_copy(params.wpa_ie, params.wpa_ie_len);
1797 #endif /* CONFIG_TESTING_OPTIONS */
1798 }
1799
1800
1801 int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
1802 const u8 *ies, size_t ies_len)
1803 {
1804 if (md == NULL || ies == NULL) {
1805 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
1806 os_free(wpa_s->sme.ft_ies);
1807 wpa_s->sme.ft_ies = NULL;
1808 wpa_s->sme.ft_ies_len = 0;
1809 wpa_s->sme.ft_used = 0;
1810 return 0;
1811 }
1812
1813 os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
1814 wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
1815 os_free(wpa_s->sme.ft_ies);
1816 wpa_s->sme.ft_ies = os_memdup(ies, ies_len);
1817 if (wpa_s->sme.ft_ies == NULL)
1818 return -1;
1819 wpa_s->sme.ft_ies_len = ies_len;
1820 return 0;
1821 }
1822
1823
1824 static void sme_deauth(struct wpa_supplicant *wpa_s)
1825 {
1826 int bssid_changed;
1827
1828 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
1829
1830 if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
1831 WLAN_REASON_DEAUTH_LEAVING) < 0) {
1832 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
1833 "failed");
1834 }
1835 wpa_s->sme.prev_bssid_set = 0;
1836
1837 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1838 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1839 os_memset(wpa_s->bssid, 0, ETH_ALEN);
1840 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1841 if (bssid_changed)
1842 wpas_notify_bssid_changed(wpa_s);
1843 }
1844
1845
1846 void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
1847 union wpa_event_data *data)
1848 {
1849 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
1850 "status code %d", MAC2STR(wpa_s->pending_bssid),
1851 data->assoc_reject.status_code);
1852
1853 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1854
1855 #ifdef CONFIG_SAE
1856 if (wpa_s->sme.sae_pmksa_caching && wpa_s->current_ssid &&
1857 wpa_key_mgmt_sae(wpa_s->current_ssid->key_mgmt)) {
1858 wpa_dbg(wpa_s, MSG_DEBUG,
1859 "PMKSA caching attempt rejected - drop PMKSA cache entry and fall back to SAE authentication");
1860 wpa_sm_aborted_cached(wpa_s->wpa);
1861 wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid);
1862 if (wpa_s->current_bss) {
1863 struct wpa_bss *bss = wpa_s->current_bss;
1864 struct wpa_ssid *ssid = wpa_s->current_ssid;
1865
1866 wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
1867 WLAN_REASON_DEAUTH_LEAVING);
1868 wpas_connect_work_done(wpa_s);
1869 wpa_supplicant_mark_disassoc(wpa_s);
1870 wpa_supplicant_connect(wpa_s, bss, ssid);
1871 return;
1872 }
1873 }
1874 #endif /* CONFIG_SAE */
1875
1876 /*
1877 * For now, unconditionally terminate the previous authentication. In
1878 * theory, this should not be needed, but mac80211 gets quite confused
1879 * if the authentication is left pending.. Some roaming cases might
1880 * benefit from using the previous authentication, so this could be
1881 * optimized in the future.
1882 */
1883 sme_deauth(wpa_s);
1884 }
1885
1886
1887 void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
1888 union wpa_event_data *data)
1889 {
1890 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
1891 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1892 wpa_supplicant_mark_disassoc(wpa_s);
1893 }
1894
1895
1896 void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
1897 union wpa_event_data *data)
1898 {
1899 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
1900 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1901 wpa_supplicant_mark_disassoc(wpa_s);
1902 }
1903
1904
1905 void sme_event_disassoc(struct wpa_supplicant *wpa_s,
1906 struct disassoc_info *info)
1907 {
1908 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
1909 if (wpa_s->sme.prev_bssid_set) {
1910 /*
1911 * cfg80211/mac80211 can get into somewhat confused state if
1912 * the AP only disassociates us and leaves us in authenticated
1913 * state. For now, force the state to be cleared to avoid
1914 * confusing errors if we try to associate with the AP again.
1915 */
1916 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
1917 "driver state");
1918 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
1919 WLAN_REASON_DEAUTH_LEAVING);
1920 }
1921 }
1922
1923
1924 static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
1925 {
1926 struct wpa_supplicant *wpa_s = eloop_ctx;
1927 if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
1928 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
1929 sme_deauth(wpa_s);
1930 }
1931 }
1932
1933
1934 static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
1935 {
1936 struct wpa_supplicant *wpa_s = eloop_ctx;
1937 if (wpa_s->wpa_state == WPA_ASSOCIATING) {
1938 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
1939 sme_deauth(wpa_s);
1940 }
1941 }
1942
1943
1944 void sme_state_changed(struct wpa_supplicant *wpa_s)
1945 {
1946 /* Make sure timers are cleaned up appropriately. */
1947 if (wpa_s->wpa_state != WPA_ASSOCIATING)
1948 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1949 if (wpa_s->wpa_state != WPA_AUTHENTICATING)
1950 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1951 }
1952
1953
1954 void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
1955 const u8 *prev_pending_bssid)
1956 {
1957 /*
1958 * mac80211-workaround to force deauth on failed auth cmd,
1959 * requires us to remain in authenticating state to allow the
1960 * second authentication attempt to be continued properly.
1961 */
1962 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
1963 "to proceed after disconnection event");
1964 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
1965 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
1966
1967 /*
1968 * Re-arm authentication timer in case auth fails for whatever reason.
1969 */
1970 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1971 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
1972 NULL);
1973 }
1974
1975
1976 void sme_clear_on_disassoc(struct wpa_supplicant *wpa_s)
1977 {
1978 wpa_s->sme.prev_bssid_set = 0;
1979 #ifdef CONFIG_SAE
1980 wpabuf_free(wpa_s->sme.sae_token);
1981 wpa_s->sme.sae_token = NULL;
1982 sae_clear_data(&wpa_s->sme.sae);
1983 #endif /* CONFIG_SAE */
1984 #ifdef CONFIG_IEEE80211R
1985 if (wpa_s->sme.ft_ies || wpa_s->sme.ft_used)
1986 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
1987 #endif /* CONFIG_IEEE80211R */
1988 #ifdef CONFIG_IEEE80211W
1989 sme_stop_sa_query(wpa_s);
1990 #endif /* CONFIG_IEEE80211W */
1991 }
1992
1993
1994 void sme_deinit(struct wpa_supplicant *wpa_s)
1995 {
1996 sme_clear_on_disassoc(wpa_s);
1997
1998 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1999 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
2000 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
2001 }
2002
2003
2004 static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
2005 const u8 *chan_list, u8 num_channels,
2006 u8 num_intol)
2007 {
2008 struct ieee80211_2040_bss_coex_ie *bc_ie;
2009 struct ieee80211_2040_intol_chan_report *ic_report;
2010 struct wpabuf *buf;
2011
2012 wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR
2013 " (num_channels=%u num_intol=%u)",
2014 MAC2STR(wpa_s->bssid), num_channels, num_intol);
2015 wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels",
2016 chan_list, num_channels);
2017
2018 buf = wpabuf_alloc(2 + /* action.category + action_code */
2019 sizeof(struct ieee80211_2040_bss_coex_ie) +
2020 sizeof(struct ieee80211_2040_intol_chan_report) +
2021 num_channels);
2022 if (buf == NULL)
2023 return;
2024
2025 wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
2026 wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
2027
2028 bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
2029 bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
2030 bc_ie->length = 1;
2031 if (num_intol)
2032 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
2033
2034 if (num_channels > 0) {
2035 ic_report = wpabuf_put(buf, sizeof(*ic_report));
2036 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
2037 ic_report->length = num_channels + 1;
2038 ic_report->op_class = 0;
2039 os_memcpy(wpabuf_put(buf, num_channels), chan_list,
2040 num_channels);
2041 }
2042
2043 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
2044 wpa_s->own_addr, wpa_s->bssid,
2045 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
2046 wpa_msg(wpa_s, MSG_INFO,
2047 "SME: Failed to send 20/40 BSS Coexistence frame");
2048 }
2049
2050 wpabuf_free(buf);
2051 }
2052
2053
2054 int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
2055 {
2056 struct wpa_bss *bss;
2057 const u8 *ie;
2058 u16 ht_cap;
2059 u8 chan_list[P2P_MAX_CHANNELS], channel;
2060 u8 num_channels = 0, num_intol = 0, i;
2061
2062 if (!wpa_s->sme.sched_obss_scan)
2063 return 0;
2064
2065 wpa_s->sme.sched_obss_scan = 0;
2066 if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
2067 return 1;
2068
2069 /*
2070 * Check whether AP uses regulatory triplet or channel triplet in
2071 * country info. Right now the operating class of the BSS channel
2072 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
2073 * based on the assumption that operating class triplet is not used in
2074 * beacon frame. If the First Channel Number/Operating Extension
2075 * Identifier octet has a positive integer value of 201 or greater,
2076 * then its operating class triplet.
2077 *
2078 * TODO: If Supported Operating Classes element is present in beacon
2079 * frame, have to lookup operating class in Annex E and fill them in
2080 * 2040 coex frame.
2081 */
2082 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
2083 if (ie && (ie[1] >= 6) && (ie[5] >= 201))
2084 return 1;
2085
2086 os_memset(chan_list, 0, sizeof(chan_list));
2087
2088 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2089 /* Skip other band bss */
2090 enum hostapd_hw_mode mode;
2091 mode = ieee80211_freq_to_chan(bss->freq, &channel);
2092 if (mode != HOSTAPD_MODE_IEEE80211G &&
2093 mode != HOSTAPD_MODE_IEEE80211B)
2094 continue;
2095
2096 ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
2097 ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
2098 wpa_printf(MSG_DEBUG, "SME OBSS scan BSS " MACSTR
2099 " freq=%u chan=%u ht_cap=0x%x",
2100 MAC2STR(bss->bssid), bss->freq, channel, ht_cap);
2101
2102 if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
2103 if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
2104 num_intol++;
2105
2106 /* Check whether the channel is already considered */
2107 for (i = 0; i < num_channels; i++) {
2108 if (channel == chan_list[i])
2109 break;
2110 }
2111 if (i != num_channels)
2112 continue;
2113
2114 chan_list[num_channels++] = channel;
2115 }
2116 }
2117
2118 sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
2119 return 1;
2120 }
2121
2122
2123 static void wpa_obss_scan_freqs_list(struct wpa_supplicant *wpa_s,
2124 struct wpa_driver_scan_params *params)
2125 {
2126 /* Include only affected channels */
2127 struct hostapd_hw_modes *mode;
2128 int count, i;
2129 int start, end;
2130
2131 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
2132 HOSTAPD_MODE_IEEE80211G);
2133 if (mode == NULL) {
2134 /* No channels supported in this band - use empty list */
2135 params->freqs = os_zalloc(sizeof(int));
2136 return;
2137 }
2138
2139 if (wpa_s->sme.ht_sec_chan == HT_SEC_CHAN_UNKNOWN &&
2140 wpa_s->current_bss) {
2141 const u8 *ie;
2142
2143 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_OPERATION);
2144 if (ie && ie[1] >= 2) {
2145 u8 o;
2146
2147 o = ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK;
2148 if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
2149 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_ABOVE;
2150 else if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
2151 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_BELOW;
2152 }
2153 }
2154
2155 start = wpa_s->assoc_freq - 10;
2156 end = wpa_s->assoc_freq + 10;
2157 switch (wpa_s->sme.ht_sec_chan) {
2158 case HT_SEC_CHAN_UNKNOWN:
2159 /* HT40+ possible on channels 1..9 */
2160 if (wpa_s->assoc_freq <= 2452)
2161 start -= 20;
2162 /* HT40- possible on channels 5-13 */
2163 if (wpa_s->assoc_freq >= 2432)
2164 end += 20;
2165 break;
2166 case HT_SEC_CHAN_ABOVE:
2167 end += 20;
2168 break;
2169 case HT_SEC_CHAN_BELOW:
2170 start -= 20;
2171 break;
2172 }
2173 wpa_printf(MSG_DEBUG,
2174 "OBSS: assoc_freq %d possible affected range %d-%d",
2175 wpa_s->assoc_freq, start, end);
2176
2177 params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
2178 if (params->freqs == NULL)
2179 return;
2180 for (count = 0, i = 0; i < mode->num_channels; i++) {
2181 int freq;
2182
2183 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
2184 continue;
2185 freq = mode->channels[i].freq;
2186 if (freq - 10 >= end || freq + 10 <= start)
2187 continue; /* not affected */
2188 params->freqs[count++] = freq;
2189 }
2190 }
2191
2192
2193 static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
2194 {
2195 struct wpa_supplicant *wpa_s = eloop_ctx;
2196 struct wpa_driver_scan_params params;
2197
2198 if (!wpa_s->current_bss) {
2199 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
2200 return;
2201 }
2202
2203 os_memset(&params, 0, sizeof(params));
2204 wpa_obss_scan_freqs_list(wpa_s, &params);
2205 params.low_priority = 1;
2206 wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
2207
2208 if (wpa_supplicant_trigger_scan(wpa_s, &params))
2209 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
2210 else
2211 wpa_s->sme.sched_obss_scan = 1;
2212 os_free(params.freqs);
2213
2214 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
2215 sme_obss_scan_timeout, wpa_s, NULL);
2216 }
2217
2218
2219 void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
2220 {
2221 const u8 *ie;
2222 struct wpa_bss *bss = wpa_s->current_bss;
2223 struct wpa_ssid *ssid = wpa_s->current_ssid;
2224 struct hostapd_hw_modes *hw_mode = NULL;
2225 int i;
2226
2227 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
2228 wpa_s->sme.sched_obss_scan = 0;
2229 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_UNKNOWN;
2230 if (!enable)
2231 return;
2232
2233 /*
2234 * Schedule OBSS scan if driver is using station SME in wpa_supplicant
2235 * or it expects OBSS scan to be performed by wpa_supplicant.
2236 */
2237 if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
2238 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
2239 ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA)
2240 return;
2241
2242 if (!wpa_s->hw.modes)
2243 return;
2244
2245 /* only HT caps in 11g mode are relevant */
2246 for (i = 0; i < wpa_s->hw.num_modes; i++) {
2247 hw_mode = &wpa_s->hw.modes[i];
2248 if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
2249 break;
2250 }
2251
2252 /* Driver does not support HT40 for 11g or doesn't have 11g. */
2253 if (i == wpa_s->hw.num_modes || !hw_mode ||
2254 !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
2255 return;
2256
2257 if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
2258 return; /* Not associated on 2.4 GHz band */
2259
2260 /* Check whether AP supports HT40 */
2261 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
2262 if (!ie || ie[1] < 2 ||
2263 !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
2264 return; /* AP does not support HT40 */
2265
2266 ie = wpa_bss_get_ie(wpa_s->current_bss,
2267 WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
2268 if (!ie || ie[1] < 14)
2269 return; /* AP does not request OBSS scans */
2270
2271 wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
2272 if (wpa_s->sme.obss_scan_int < 10) {
2273 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
2274 "replaced with the minimum 10 sec",
2275 wpa_s->sme.obss_scan_int);
2276 wpa_s->sme.obss_scan_int = 10;
2277 }
2278 wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
2279 wpa_s->sme.obss_scan_int);
2280 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
2281 sme_obss_scan_timeout, wpa_s, NULL);
2282 }
2283
2284
2285 #ifdef CONFIG_IEEE80211W
2286
2287 static const unsigned int sa_query_max_timeout = 1000;
2288 static const unsigned int sa_query_retry_timeout = 201;
2289 static const unsigned int sa_query_ch_switch_max_delay = 5000; /* in usec */
2290
2291 static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
2292 {
2293 u32 tu;
2294 struct os_reltime now, passed;
2295 os_get_reltime(&now);
2296 os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed);
2297 tu = (passed.sec * 1000000 + passed.usec) / 1024;
2298 if (sa_query_max_timeout < tu) {
2299 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
2300 sme_stop_sa_query(wpa_s);
2301 wpa_supplicant_deauthenticate(
2302 wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
2303 return 1;
2304 }
2305
2306 return 0;
2307 }
2308
2309
2310 static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
2311 const u8 *trans_id)
2312 {
2313 u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN + OCV_OCI_EXTENDED_LEN];
2314 u8 req_len = 2 + WLAN_SA_QUERY_TR_ID_LEN;
2315
2316 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
2317 MACSTR, MAC2STR(wpa_s->bssid));
2318 wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
2319 trans_id, WLAN_SA_QUERY_TR_ID_LEN);
2320 req[0] = WLAN_ACTION_SA_QUERY;
2321 req[1] = WLAN_SA_QUERY_REQUEST;
2322 os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
2323
2324 #ifdef CONFIG_OCV
2325 if (wpa_sm_ocv_enabled(wpa_s->wpa)) {
2326 struct wpa_channel_info ci;
2327
2328 if (wpa_drv_channel_info(wpa_s, &ci) != 0) {
2329 wpa_printf(MSG_WARNING,
2330 "Failed to get channel info for OCI element in SA Query Request frame");
2331 return;
2332 }
2333
2334 if (ocv_insert_extended_oci(&ci, req + req_len) < 0)
2335 return;
2336
2337 req_len += OCV_OCI_EXTENDED_LEN;
2338 }
2339 #endif /* CONFIG_OCV */
2340
2341 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
2342 wpa_s->own_addr, wpa_s->bssid,
2343 req, req_len, 0) < 0)
2344 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
2345 "Request");
2346 }
2347
2348
2349 static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
2350 {
2351 struct wpa_supplicant *wpa_s = eloop_ctx;
2352 unsigned int timeout, sec, usec;
2353 u8 *trans_id, *nbuf;
2354
2355 if (wpa_s->sme.sa_query_count > 0 &&
2356 sme_check_sa_query_timeout(wpa_s))
2357 return;
2358
2359 nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
2360 wpa_s->sme.sa_query_count + 1,
2361 WLAN_SA_QUERY_TR_ID_LEN);
2362 if (nbuf == NULL) {
2363 sme_stop_sa_query(wpa_s);
2364 return;
2365 }
2366 if (wpa_s->sme.sa_query_count == 0) {
2367 /* Starting a new SA Query procedure */
2368 os_get_reltime(&wpa_s->sme.sa_query_start);
2369 }
2370 trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
2371 wpa_s->sme.sa_query_trans_id = nbuf;
2372 wpa_s->sme.sa_query_count++;
2373
2374 if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) {
2375 wpa_printf(MSG_DEBUG, "Could not generate SA Query ID");
2376 sme_stop_sa_query(wpa_s);
2377 return;
2378 }
2379
2380 timeout = sa_query_retry_timeout;
2381 sec = ((timeout / 1000) * 1024) / 1000;
2382 usec = (timeout % 1000) * 1024;
2383 eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
2384
2385 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
2386 wpa_s->sme.sa_query_count);
2387
2388 sme_send_sa_query_req(wpa_s, trans_id);
2389 }
2390
2391
2392 static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
2393 {
2394 sme_sa_query_timer(wpa_s, NULL);
2395 }
2396
2397
2398 static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
2399 {
2400 if (wpa_s->sme.sa_query_trans_id)
2401 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Stop SA Query");
2402 eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
2403 os_free(wpa_s->sme.sa_query_trans_id);
2404 wpa_s->sme.sa_query_trans_id = NULL;
2405 wpa_s->sme.sa_query_count = 0;
2406 }
2407
2408
2409 void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
2410 const u8 *da, u16 reason_code)
2411 {
2412 struct wpa_ssid *ssid;
2413 struct os_reltime now;
2414
2415 if (wpa_s->wpa_state != WPA_COMPLETED)
2416 return;
2417 ssid = wpa_s->current_ssid;
2418 if (wpas_get_ssid_pmf(wpa_s, ssid) == NO_MGMT_FRAME_PROTECTION)
2419 return;
2420 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
2421 return;
2422 if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
2423 reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
2424 return;
2425 if (wpa_s->sme.sa_query_count > 0)
2426 return;
2427
2428 os_get_reltime(&now);
2429 if (wpa_s->sme.last_unprot_disconnect.sec &&
2430 !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10))
2431 return; /* limit SA Query procedure frequency */
2432 wpa_s->sme.last_unprot_disconnect = now;
2433
2434 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
2435 "possible AP/STA state mismatch - trigger SA Query");
2436 sme_start_sa_query(wpa_s);
2437 }
2438
2439
2440 void sme_event_ch_switch(struct wpa_supplicant *wpa_s)
2441 {
2442 unsigned int usec;
2443 u32 _rand;
2444
2445 if (wpa_s->wpa_state != WPA_COMPLETED ||
2446 !wpa_sm_ocv_enabled(wpa_s->wpa))
2447 return;
2448
2449 wpa_dbg(wpa_s, MSG_DEBUG,
2450 "SME: Channel switch completed - trigger new SA Query to verify new operating channel");
2451 sme_stop_sa_query(wpa_s);
2452
2453 if (os_get_random((u8 *) &_rand, sizeof(_rand)) < 0)
2454 _rand = os_random();
2455 usec = _rand % (sa_query_ch_switch_max_delay + 1);
2456 eloop_register_timeout(0, usec, sme_sa_query_timer, wpa_s, NULL);
2457 }
2458
2459
2460 static void sme_process_sa_query_request(struct wpa_supplicant *wpa_s,
2461 const u8 *sa, const u8 *data,
2462 size_t len)
2463 {
2464 u8 resp[2 + WLAN_SA_QUERY_TR_ID_LEN + OCV_OCI_EXTENDED_LEN];
2465 u8 resp_len = 2 + WLAN_SA_QUERY_TR_ID_LEN;
2466
2467 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Response to "
2468 MACSTR, MAC2STR(wpa_s->bssid));
2469
2470 resp[0] = WLAN_ACTION_SA_QUERY;
2471 resp[1] = WLAN_SA_QUERY_RESPONSE;
2472 os_memcpy(resp + 2, data + 1, WLAN_SA_QUERY_TR_ID_LEN);
2473
2474 #ifdef CONFIG_OCV
2475 if (wpa_sm_ocv_enabled(wpa_s->wpa)) {
2476 struct wpa_channel_info ci;
2477
2478 if (wpa_drv_channel_info(wpa_s, &ci) != 0) {
2479 wpa_printf(MSG_WARNING,
2480 "Failed to get channel info for OCI element in SA Query Response frame");
2481 return;
2482 }
2483
2484 if (ocv_insert_extended_oci(&ci, resp + resp_len) < 0)
2485 return;
2486
2487 resp_len += OCV_OCI_EXTENDED_LEN;
2488 }
2489 #endif /* CONFIG_OCV */
2490
2491 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
2492 wpa_s->own_addr, wpa_s->bssid,
2493 resp, resp_len, 0) < 0)
2494 wpa_msg(wpa_s, MSG_INFO,
2495 "SME: Failed to send SA Query Response");
2496 }
2497
2498
2499 static void sme_process_sa_query_response(struct wpa_supplicant *wpa_s,
2500 const u8 *sa, const u8 *data,
2501 size_t len)
2502 {
2503 int i;
2504
2505 if (!wpa_s->sme.sa_query_trans_id)
2506 return;
2507
2508 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
2509 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
2510
2511 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
2512 return;
2513
2514 for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
2515 if (os_memcmp(wpa_s->sme.sa_query_trans_id +
2516 i * WLAN_SA_QUERY_TR_ID_LEN,
2517 data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
2518 break;
2519 }
2520
2521 if (i >= wpa_s->sme.sa_query_count) {
2522 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
2523 "transaction identifier found");
2524 return;
2525 }
2526
2527 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
2528 "from " MACSTR, MAC2STR(sa));
2529 sme_stop_sa_query(wpa_s);
2530 }
2531
2532
2533 void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
2534 const u8 *data, size_t len)
2535 {
2536 if (len < 1 + WLAN_SA_QUERY_TR_ID_LEN)
2537 return;
2538
2539 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query frame from "
2540 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
2541
2542 #ifdef CONFIG_OCV
2543 if (wpa_sm_ocv_enabled(wpa_s->wpa)) {
2544 struct ieee802_11_elems elems;
2545 struct wpa_channel_info ci;
2546
2547 if (ieee802_11_parse_elems(data + 1 + WLAN_SA_QUERY_TR_ID_LEN,
2548 len - 1 - WLAN_SA_QUERY_TR_ID_LEN,
2549 &elems, 1) == ParseFailed) {
2550 wpa_printf(MSG_DEBUG,
2551 "SA Query: Failed to parse elements");
2552 return;
2553 }
2554
2555 if (wpa_drv_channel_info(wpa_s, &ci) != 0) {
2556 wpa_printf(MSG_WARNING,
2557 "Failed to get channel info to validate received OCI in SA Query Action frame");
2558 return;
2559 }
2560
2561 if (ocv_verify_tx_params(elems.oci, elems.oci_len, &ci,
2562 channel_width_to_int(ci.chanwidth),
2563 ci.seg1_idx) != 0) {
2564 wpa_printf(MSG_WARNING, "%s", ocv_errorstr);
2565 return;
2566 }
2567 }
2568 #endif /* CONFIG_OCV */
2569
2570 if (data[0] == WLAN_SA_QUERY_REQUEST)
2571 sme_process_sa_query_request(wpa_s, sa, data, len);
2572 else if (data[0] == WLAN_SA_QUERY_RESPONSE)
2573 sme_process_sa_query_response(wpa_s, sa, data, len);
2574 }
2575
2576 #endif /* CONFIG_IEEE80211W */
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