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WNM: Fix BSS Termination Duration subelement length validation
[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 if (!data->external_auth.bssid || !data->external_auth.ssid)
1036 return;
1037 os_memcpy(wpa_s->sme.ext_auth_bssid, data->external_auth.bssid,
1038 ETH_ALEN);
1039 os_memcpy(wpa_s->sme.ext_auth_ssid, data->external_auth.ssid,
1040 data->external_auth.ssid_len);
1041 wpa_s->sme.ext_auth_ssid_len = data->external_auth.ssid_len;
1042 wpa_s->sme.seq_num = 0;
1043 wpa_s->sme.sae.state = SAE_NOTHING;
1044 wpa_s->sme.sae.send_confirm = 0;
1045 wpa_s->sme.sae_group_index = 0;
1046 sme_handle_external_auth_start(wpa_s, data);
1047 } else if (data->external_auth.action == EXT_AUTH_ABORT) {
1048 /* Report failure to driver for the wrong trigger */
1049 sme_send_external_auth_status(wpa_s,
1050 WLAN_STATUS_UNSPECIFIED_FAILURE);
1051 }
1052 }
1053
1054
1055 static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
1056 u16 status_code, const u8 *data, size_t len,
1057 int external, const u8 *sa)
1058 {
1059 int *groups;
1060
1061 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
1062 "status code %u", auth_transaction, status_code);
1063
1064 if (auth_transaction == 1 &&
1065 status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
1066 wpa_s->sme.sae.state == SAE_COMMITTED &&
1067 (external || wpa_s->current_bss) && wpa_s->current_ssid) {
1068 int default_groups[] = { 19, 20, 21, 0 };
1069 u16 group;
1070
1071 groups = wpa_s->conf->sae_groups;
1072 if (!groups || groups[0] <= 0)
1073 groups = default_groups;
1074
1075 if (len < sizeof(le16)) {
1076 wpa_dbg(wpa_s, MSG_DEBUG,
1077 "SME: Too short SAE anti-clogging token request");
1078 return -1;
1079 }
1080 group = WPA_GET_LE16(data);
1081 wpa_dbg(wpa_s, MSG_DEBUG,
1082 "SME: SAE anti-clogging token requested (group %u)",
1083 group);
1084 if (sae_group_allowed(&wpa_s->sme.sae, groups, group) !=
1085 WLAN_STATUS_SUCCESS) {
1086 wpa_dbg(wpa_s, MSG_ERROR,
1087 "SME: SAE group %u of anti-clogging request is invalid",
1088 group);
1089 return -1;
1090 }
1091 wpabuf_free(wpa_s->sme.sae_token);
1092 wpa_s->sme.sae_token = wpabuf_alloc_copy(data + sizeof(le16),
1093 len - sizeof(le16));
1094 if (!external)
1095 sme_send_authentication(wpa_s, wpa_s->current_bss,
1096 wpa_s->current_ssid, 2);
1097 else
1098 sme_external_auth_send_sae_commit(
1099 wpa_s, wpa_s->sme.ext_auth_bssid,
1100 wpa_s->current_ssid);
1101 return 0;
1102 }
1103
1104 if (auth_transaction == 1 &&
1105 status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
1106 wpa_s->sme.sae.state == SAE_COMMITTED &&
1107 (external || wpa_s->current_bss) && wpa_s->current_ssid) {
1108 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
1109 wpa_s->sme.sae_group_index++;
1110 if (sme_set_sae_group(wpa_s) < 0)
1111 return -1; /* no other groups enabled */
1112 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
1113 if (!external)
1114 sme_send_authentication(wpa_s, wpa_s->current_bss,
1115 wpa_s->current_ssid, 1);
1116 else
1117 sme_external_auth_send_sae_commit(
1118 wpa_s, wpa_s->sme.ext_auth_bssid,
1119 wpa_s->current_ssid);
1120 return 0;
1121 }
1122
1123 if (auth_transaction == 1 &&
1124 status_code == WLAN_STATUS_UNKNOWN_PASSWORD_IDENTIFIER) {
1125 const u8 *bssid = sa ? sa : wpa_s->pending_bssid;
1126
1127 wpa_msg(wpa_s, MSG_INFO,
1128 WPA_EVENT_SAE_UNKNOWN_PASSWORD_IDENTIFIER MACSTR,
1129 MAC2STR(bssid));
1130 return -1;
1131 }
1132
1133 if (status_code != WLAN_STATUS_SUCCESS)
1134 return -1;
1135
1136 if (auth_transaction == 1) {
1137 u16 res;
1138
1139 groups = wpa_s->conf->sae_groups;
1140
1141 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
1142 if ((!external && wpa_s->current_bss == NULL) ||
1143 wpa_s->current_ssid == NULL)
1144 return -1;
1145 if (wpa_s->sme.sae.state != SAE_COMMITTED)
1146 return -1;
1147 if (groups && groups[0] <= 0)
1148 groups = NULL;
1149 res = sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
1150 groups);
1151 if (res == SAE_SILENTLY_DISCARD) {
1152 wpa_printf(MSG_DEBUG,
1153 "SAE: Drop commit message due to reflection attack");
1154 return 0;
1155 }
1156 if (res != WLAN_STATUS_SUCCESS)
1157 return -1;
1158
1159 if (sae_process_commit(&wpa_s->sme.sae) < 0) {
1160 wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
1161 "commit");
1162 return -1;
1163 }
1164
1165 wpabuf_free(wpa_s->sme.sae_token);
1166 wpa_s->sme.sae_token = NULL;
1167 if (!external)
1168 sme_send_authentication(wpa_s, wpa_s->current_bss,
1169 wpa_s->current_ssid, 0);
1170 else
1171 sme_external_auth_send_sae_confirm(wpa_s, sa);
1172 return 0;
1173 } else if (auth_transaction == 2) {
1174 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
1175 if (wpa_s->sme.sae.state != SAE_CONFIRMED)
1176 return -1;
1177 if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
1178 return -1;
1179 wpa_s->sme.sae.state = SAE_ACCEPTED;
1180 sae_clear_temp_data(&wpa_s->sme.sae);
1181
1182 if (external) {
1183 /* Report success to driver */
1184 sme_send_external_auth_status(wpa_s,
1185 WLAN_STATUS_SUCCESS);
1186 }
1187
1188 return 1;
1189 }
1190
1191 return -1;
1192 }
1193
1194
1195 void sme_external_auth_mgmt_rx(struct wpa_supplicant *wpa_s,
1196 const u8 *auth_frame, size_t len)
1197 {
1198 const struct ieee80211_mgmt *header;
1199 size_t auth_length;
1200
1201 header = (const struct ieee80211_mgmt *) auth_frame;
1202 auth_length = IEEE80211_HDRLEN + sizeof(header->u.auth);
1203
1204 if (len < auth_length) {
1205 /* Notify failure to the driver */
1206 sme_send_external_auth_status(wpa_s,
1207 WLAN_STATUS_UNSPECIFIED_FAILURE);
1208 return;
1209 }
1210
1211 if (le_to_host16(header->u.auth.auth_alg) == WLAN_AUTH_SAE) {
1212 int res;
1213
1214 res = sme_sae_auth(
1215 wpa_s, le_to_host16(header->u.auth.auth_transaction),
1216 le_to_host16(header->u.auth.status_code),
1217 header->u.auth.variable,
1218 len - auth_length, 1, header->sa);
1219 if (res < 0) {
1220 /* Notify failure to the driver */
1221 sme_send_external_auth_status(
1222 wpa_s, WLAN_STATUS_UNSPECIFIED_FAILURE);
1223 return;
1224 }
1225 if (res != 1)
1226 return;
1227
1228 wpa_printf(MSG_DEBUG,
1229 "SME: SAE completed - setting PMK for 4-way handshake");
1230 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN,
1231 wpa_s->sme.sae.pmkid, wpa_s->pending_bssid);
1232 }
1233 }
1234
1235 #endif /* CONFIG_SAE */
1236
1237
1238 void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
1239 {
1240 struct wpa_ssid *ssid = wpa_s->current_ssid;
1241
1242 if (ssid == NULL) {
1243 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
1244 "when network is not selected");
1245 return;
1246 }
1247
1248 if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
1249 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
1250 "when not in authenticating state");
1251 return;
1252 }
1253
1254 if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
1255 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
1256 "unexpected peer " MACSTR,
1257 MAC2STR(data->auth.peer));
1258 return;
1259 }
1260
1261 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
1262 " auth_type=%d auth_transaction=%d status_code=%d",
1263 MAC2STR(data->auth.peer), data->auth.auth_type,
1264 data->auth.auth_transaction, data->auth.status_code);
1265 wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
1266 data->auth.ies, data->auth.ies_len);
1267
1268 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1269
1270 #ifdef CONFIG_SAE
1271 if (data->auth.auth_type == WLAN_AUTH_SAE) {
1272 int res;
1273 res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
1274 data->auth.status_code, data->auth.ies,
1275 data->auth.ies_len, 0, NULL);
1276 if (res < 0) {
1277 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1278 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1279
1280 }
1281 if (res != 1)
1282 return;
1283
1284 wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for "
1285 "4-way handshake");
1286 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN,
1287 wpa_s->sme.sae.pmkid, wpa_s->pending_bssid);
1288 }
1289 #endif /* CONFIG_SAE */
1290
1291 if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
1292 char *ie_txt = NULL;
1293
1294 if (data->auth.ies && data->auth.ies_len) {
1295 size_t buflen = 2 * data->auth.ies_len + 1;
1296 ie_txt = os_malloc(buflen);
1297 if (ie_txt) {
1298 wpa_snprintf_hex(ie_txt, buflen, data->auth.ies,
1299 data->auth.ies_len);
1300 }
1301 }
1302 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AUTH_REJECT MACSTR
1303 " auth_type=%u auth_transaction=%u status_code=%u%s%s",
1304 MAC2STR(data->auth.peer), data->auth.auth_type,
1305 data->auth.auth_transaction, data->auth.status_code,
1306 ie_txt ? " ie=" : "",
1307 ie_txt ? ie_txt : "");
1308 os_free(ie_txt);
1309
1310 #ifdef CONFIG_FILS
1311 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FILS ||
1312 wpa_s->sme.auth_alg == WPA_AUTH_ALG_FILS_SK_PFS)
1313 fils_connection_failure(wpa_s);
1314 #endif /* CONFIG_FILS */
1315
1316 if (data->auth.status_code !=
1317 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
1318 wpa_s->sme.auth_alg == data->auth.auth_type ||
1319 wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
1320 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1321 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1322 return;
1323 }
1324
1325 wpas_connect_work_done(wpa_s);
1326
1327 switch (data->auth.auth_type) {
1328 case WLAN_AUTH_OPEN:
1329 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
1330
1331 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
1332 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
1333 wpa_s->current_ssid);
1334 return;
1335
1336 case WLAN_AUTH_SHARED_KEY:
1337 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
1338
1339 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
1340 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
1341 wpa_s->current_ssid);
1342 return;
1343
1344 default:
1345 return;
1346 }
1347 }
1348
1349 #ifdef CONFIG_IEEE80211R
1350 if (data->auth.auth_type == WLAN_AUTH_FT) {
1351 const u8 *ric_ies = NULL;
1352 size_t ric_ies_len = 0;
1353
1354 if (wpa_s->ric_ies) {
1355 ric_ies = wpabuf_head(wpa_s->ric_ies);
1356 ric_ies_len = wpabuf_len(wpa_s->ric_ies);
1357 }
1358 if (wpa_ft_process_response(wpa_s->wpa, data->auth.ies,
1359 data->auth.ies_len, 0,
1360 data->auth.peer,
1361 ric_ies, ric_ies_len) < 0) {
1362 wpa_dbg(wpa_s, MSG_DEBUG,
1363 "SME: FT Authentication response processing failed");
1364 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
1365 MACSTR
1366 " reason=%d locally_generated=1",
1367 MAC2STR(wpa_s->pending_bssid),
1368 WLAN_REASON_DEAUTH_LEAVING);
1369 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1370 wpa_supplicant_mark_disassoc(wpa_s);
1371 return;
1372 }
1373 }
1374 #endif /* CONFIG_IEEE80211R */
1375
1376 #ifdef CONFIG_FILS
1377 if (data->auth.auth_type == WLAN_AUTH_FILS_SK ||
1378 data->auth.auth_type == WLAN_AUTH_FILS_SK_PFS) {
1379 u16 expect_auth_type;
1380
1381 expect_auth_type = wpa_s->sme.auth_alg ==
1382 WPA_AUTH_ALG_FILS_SK_PFS ? WLAN_AUTH_FILS_SK_PFS :
1383 WLAN_AUTH_FILS_SK;
1384 if (data->auth.auth_type != expect_auth_type) {
1385 wpa_dbg(wpa_s, MSG_DEBUG,
1386 "SME: FILS Authentication response used different auth alg (%u; expected %u)",
1387 data->auth.auth_type, expect_auth_type);
1388 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
1389 MACSTR
1390 " reason=%d locally_generated=1",
1391 MAC2STR(wpa_s->pending_bssid),
1392 WLAN_REASON_DEAUTH_LEAVING);
1393 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1394 wpa_supplicant_mark_disassoc(wpa_s);
1395 return;
1396 }
1397
1398 if (fils_process_auth(wpa_s->wpa, wpa_s->pending_bssid,
1399 data->auth.ies, data->auth.ies_len) < 0) {
1400 wpa_dbg(wpa_s, MSG_DEBUG,
1401 "SME: FILS Authentication response processing failed");
1402 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
1403 MACSTR
1404 " reason=%d locally_generated=1",
1405 MAC2STR(wpa_s->pending_bssid),
1406 WLAN_REASON_DEAUTH_LEAVING);
1407 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1408 wpa_supplicant_mark_disassoc(wpa_s);
1409 return;
1410 }
1411 }
1412 #endif /* CONFIG_FILS */
1413
1414 sme_associate(wpa_s, ssid->mode, data->auth.peer,
1415 data->auth.auth_type);
1416 }
1417
1418
1419 #ifdef CONFIG_IEEE80211R
1420 static void remove_ie(u8 *buf, size_t *len, u8 eid)
1421 {
1422 u8 *pos, *next, *end;
1423
1424 pos = (u8 *) get_ie(buf, *len, eid);
1425 if (pos) {
1426 next = pos + 2 + pos[1];
1427 end = buf + *len;
1428 *len -= 2 + pos[1];
1429 os_memmove(pos, next, end - next);
1430 }
1431 }
1432 #endif /* CONFIG_IEEE80211R */
1433
1434
1435 void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
1436 const u8 *bssid, u16 auth_type)
1437 {
1438 struct wpa_driver_associate_params params;
1439 struct ieee802_11_elems elems;
1440 #ifdef CONFIG_FILS
1441 u8 nonces[2 * FILS_NONCE_LEN];
1442 #endif /* CONFIG_FILS */
1443 #ifdef CONFIG_HT_OVERRIDES
1444 struct ieee80211_ht_capabilities htcaps;
1445 struct ieee80211_ht_capabilities htcaps_mask;
1446 #endif /* CONFIG_HT_OVERRIDES */
1447 #ifdef CONFIG_VHT_OVERRIDES
1448 struct ieee80211_vht_capabilities vhtcaps;
1449 struct ieee80211_vht_capabilities vhtcaps_mask;
1450 #endif /* CONFIG_VHT_OVERRIDES */
1451
1452 os_memset(&params, 0, sizeof(params));
1453
1454 #ifdef CONFIG_FILS
1455 if (auth_type == WLAN_AUTH_FILS_SK ||
1456 auth_type == WLAN_AUTH_FILS_SK_PFS) {
1457 struct wpabuf *buf;
1458 const u8 *snonce, *anonce;
1459 const unsigned int max_hlp = 20;
1460 struct wpabuf *hlp[max_hlp];
1461 unsigned int i, num_hlp = 0;
1462 struct fils_hlp_req *req;
1463
1464 dl_list_for_each(req, &wpa_s->fils_hlp_req, struct fils_hlp_req,
1465 list) {
1466 hlp[num_hlp] = wpabuf_alloc(2 * ETH_ALEN + 6 +
1467 wpabuf_len(req->pkt));
1468 if (!hlp[num_hlp])
1469 break;
1470 wpabuf_put_data(hlp[num_hlp], req->dst, ETH_ALEN);
1471 wpabuf_put_data(hlp[num_hlp], wpa_s->own_addr,
1472 ETH_ALEN);
1473 wpabuf_put_data(hlp[num_hlp],
1474 "\xaa\xaa\x03\x00\x00\x00", 6);
1475 wpabuf_put_buf(hlp[num_hlp], req->pkt);
1476 num_hlp++;
1477 if (num_hlp >= max_hlp)
1478 break;
1479 }
1480
1481 buf = fils_build_assoc_req(wpa_s->wpa, &params.fils_kek,
1482 &params.fils_kek_len, &snonce,
1483 &anonce,
1484 (const struct wpabuf **) hlp,
1485 num_hlp);
1486 for (i = 0; i < num_hlp; i++)
1487 wpabuf_free(hlp[i]);
1488 if (!buf)
1489 return;
1490 wpa_hexdump(MSG_DEBUG, "FILS: assoc_req before FILS elements",
1491 wpa_s->sme.assoc_req_ie,
1492 wpa_s->sme.assoc_req_ie_len);
1493 #ifdef CONFIG_IEEE80211R
1494 if (wpa_key_mgmt_ft(wpa_s->key_mgmt)) {
1495 /* Remove RSNE and MDE to allow them to be overridden
1496 * with FILS+FT specific values from
1497 * fils_build_assoc_req(). */
1498 remove_ie(wpa_s->sme.assoc_req_ie,
1499 &wpa_s->sme.assoc_req_ie_len,
1500 WLAN_EID_RSN);
1501 wpa_hexdump(MSG_DEBUG,
1502 "FILS: assoc_req after RSNE removal",
1503 wpa_s->sme.assoc_req_ie,
1504 wpa_s->sme.assoc_req_ie_len);
1505 remove_ie(wpa_s->sme.assoc_req_ie,
1506 &wpa_s->sme.assoc_req_ie_len,
1507 WLAN_EID_MOBILITY_DOMAIN);
1508 wpa_hexdump(MSG_DEBUG,
1509 "FILS: assoc_req after MDE removal",
1510 wpa_s->sme.assoc_req_ie,
1511 wpa_s->sme.assoc_req_ie_len);
1512 }
1513 #endif /* CONFIG_IEEE80211R */
1514 /* TODO: Make wpa_s->sme.assoc_req_ie use dynamic allocation */
1515 if (wpa_s->sme.assoc_req_ie_len + wpabuf_len(buf) >
1516 sizeof(wpa_s->sme.assoc_req_ie)) {
1517 wpa_printf(MSG_ERROR,
1518 "FILS: Not enough buffer room for own AssocReq elements");
1519 wpabuf_free(buf);
1520 return;
1521 }
1522 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1523 wpabuf_head(buf), wpabuf_len(buf));
1524 wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf);
1525 wpabuf_free(buf);
1526 wpa_hexdump(MSG_DEBUG, "FILS: assoc_req after FILS elements",
1527 wpa_s->sme.assoc_req_ie,
1528 wpa_s->sme.assoc_req_ie_len);
1529
1530 os_memcpy(nonces, snonce, FILS_NONCE_LEN);
1531 os_memcpy(nonces + FILS_NONCE_LEN, anonce, FILS_NONCE_LEN);
1532 params.fils_nonces = nonces;
1533 params.fils_nonces_len = sizeof(nonces);
1534 }
1535 #endif /* CONFIG_FILS */
1536
1537 #ifdef CONFIG_OWE
1538 #ifdef CONFIG_TESTING_OPTIONS
1539 if (get_ie_ext(wpa_s->sme.assoc_req_ie, wpa_s->sme.assoc_req_ie_len,
1540 WLAN_EID_EXT_OWE_DH_PARAM)) {
1541 wpa_printf(MSG_INFO, "TESTING: Override OWE DH element");
1542 } else
1543 #endif /* CONFIG_TESTING_OPTIONS */
1544 if (auth_type == WLAN_AUTH_OPEN &&
1545 wpa_s->key_mgmt == WPA_KEY_MGMT_OWE) {
1546 struct wpabuf *owe_ie;
1547 u16 group;
1548
1549 if (wpa_s->current_ssid && wpa_s->current_ssid->owe_group) {
1550 group = wpa_s->current_ssid->owe_group;
1551 } else if (wpa_s->assoc_status_code ==
1552 WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED) {
1553 if (wpa_s->last_owe_group == 19)
1554 group = 20;
1555 else if (wpa_s->last_owe_group == 20)
1556 group = 21;
1557 else
1558 group = OWE_DH_GROUP;
1559 } else {
1560 group = OWE_DH_GROUP;
1561 }
1562
1563 wpa_s->last_owe_group = group;
1564 wpa_printf(MSG_DEBUG, "OWE: Try to use group %u", group);
1565 owe_ie = owe_build_assoc_req(wpa_s->wpa, group);
1566 if (!owe_ie) {
1567 wpa_printf(MSG_ERROR,
1568 "OWE: Failed to build IE for Association Request frame");
1569 return;
1570 }
1571 if (wpa_s->sme.assoc_req_ie_len + wpabuf_len(owe_ie) >
1572 sizeof(wpa_s->sme.assoc_req_ie)) {
1573 wpa_printf(MSG_ERROR,
1574 "OWE: Not enough buffer room for own Association Request frame elements");
1575 wpabuf_free(owe_ie);
1576 return;
1577 }
1578 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1579 wpabuf_head(owe_ie), wpabuf_len(owe_ie));
1580 wpa_s->sme.assoc_req_ie_len += wpabuf_len(owe_ie);
1581 wpabuf_free(owe_ie);
1582 }
1583 #endif /* CONFIG_OWE */
1584
1585 #ifdef CONFIG_DPP2
1586 if (wpa_s->key_mgmt == WPA_KEY_MGMT_DPP && wpa_s->current_ssid &&
1587 wpa_s->current_ssid->dpp_netaccesskey) {
1588 struct wpa_ssid *ssid = wpa_s->current_ssid;
1589
1590 dpp_pfs_free(wpa_s->dpp_pfs);
1591 wpa_s->dpp_pfs = dpp_pfs_init(ssid->dpp_netaccesskey,
1592 ssid->dpp_netaccesskey_len);
1593 if (!wpa_s->dpp_pfs) {
1594 wpa_printf(MSG_DEBUG, "DPP: Could not initialize PFS");
1595 /* Try to continue without PFS */
1596 goto pfs_fail;
1597 }
1598 if (wpa_s->sme.assoc_req_ie_len +
1599 wpabuf_len(wpa_s->dpp_pfs->ie) >
1600 sizeof(wpa_s->sme.assoc_req_ie)) {
1601 wpa_printf(MSG_ERROR,
1602 "DPP: Not enough buffer room for own Association Request frame elements");
1603 dpp_pfs_free(wpa_s->dpp_pfs);
1604 wpa_s->dpp_pfs = NULL;
1605 goto pfs_fail;
1606 }
1607 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1608 wpabuf_head(wpa_s->dpp_pfs->ie),
1609 wpabuf_len(wpa_s->dpp_pfs->ie));
1610 wpa_s->sme.assoc_req_ie_len += wpabuf_len(wpa_s->dpp_pfs->ie);
1611 }
1612 pfs_fail:
1613 #endif /* CONFIG_DPP2 */
1614
1615 if (wpa_s->current_ssid && wpa_s->current_ssid->multi_ap_backhaul_sta) {
1616 size_t multi_ap_ie_len;
1617
1618 multi_ap_ie_len = add_multi_ap_ie(
1619 wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1620 sizeof(wpa_s->sme.assoc_req_ie) -
1621 wpa_s->sme.assoc_req_ie_len,
1622 MULTI_AP_BACKHAUL_STA);
1623 if (multi_ap_ie_len == 0) {
1624 wpa_printf(MSG_ERROR,
1625 "Multi-AP: Failed to build Multi-AP IE");
1626 return;
1627 }
1628 wpa_s->sme.assoc_req_ie_len += multi_ap_ie_len;
1629 }
1630
1631 params.bssid = bssid;
1632 params.ssid = wpa_s->sme.ssid;
1633 params.ssid_len = wpa_s->sme.ssid_len;
1634 params.freq.freq = wpa_s->sme.freq;
1635 params.bg_scan_period = wpa_s->current_ssid ?
1636 wpa_s->current_ssid->bg_scan_period : -1;
1637 params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
1638 wpa_s->sme.assoc_req_ie : NULL;
1639 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
1640 wpa_hexdump(MSG_DEBUG, "SME: Association Request IEs",
1641 params.wpa_ie, params.wpa_ie_len);
1642 params.pairwise_suite = wpa_s->pairwise_cipher;
1643 params.group_suite = wpa_s->group_cipher;
1644 params.mgmt_group_suite = wpa_s->mgmt_group_cipher;
1645 params.key_mgmt_suite = wpa_s->key_mgmt;
1646 params.wpa_proto = wpa_s->wpa_proto;
1647 #ifdef CONFIG_HT_OVERRIDES
1648 os_memset(&htcaps, 0, sizeof(htcaps));
1649 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
1650 params.htcaps = (u8 *) &htcaps;
1651 params.htcaps_mask = (u8 *) &htcaps_mask;
1652 wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, &params);
1653 #endif /* CONFIG_HT_OVERRIDES */
1654 #ifdef CONFIG_VHT_OVERRIDES
1655 os_memset(&vhtcaps, 0, sizeof(vhtcaps));
1656 os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
1657 params.vhtcaps = &vhtcaps;
1658 params.vhtcaps_mask = &vhtcaps_mask;
1659 wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, &params);
1660 #endif /* CONFIG_VHT_OVERRIDES */
1661 #ifdef CONFIG_IEEE80211R
1662 if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies &&
1663 get_ie(wpa_s->sme.ft_ies, wpa_s->sme.ft_ies_len,
1664 WLAN_EID_RIC_DATA)) {
1665 /* There seems to be a pretty inconvenient bug in the Linux
1666 * kernel IE splitting functionality when RIC is used. For now,
1667 * skip correct behavior in IE construction here (i.e., drop the
1668 * additional non-FT-specific IEs) to avoid kernel issues. This
1669 * is fine since RIC is used only for testing purposes in the
1670 * current implementation. */
1671 wpa_printf(MSG_INFO,
1672 "SME: Linux kernel workaround - do not try to include additional IEs with RIC");
1673 params.wpa_ie = wpa_s->sme.ft_ies;
1674 params.wpa_ie_len = wpa_s->sme.ft_ies_len;
1675 } else if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
1676 const u8 *rm_en, *pos, *end;
1677 size_t rm_en_len = 0;
1678 u8 *rm_en_dup = NULL, *wpos;
1679
1680 /* Remove RSNE, MDE, FTE to allow them to be overridden with
1681 * FT specific values */
1682 remove_ie(wpa_s->sme.assoc_req_ie,
1683 &wpa_s->sme.assoc_req_ie_len,
1684 WLAN_EID_RSN);
1685 remove_ie(wpa_s->sme.assoc_req_ie,
1686 &wpa_s->sme.assoc_req_ie_len,
1687 WLAN_EID_MOBILITY_DOMAIN);
1688 remove_ie(wpa_s->sme.assoc_req_ie,
1689 &wpa_s->sme.assoc_req_ie_len,
1690 WLAN_EID_FAST_BSS_TRANSITION);
1691 rm_en = get_ie(wpa_s->sme.assoc_req_ie,
1692 wpa_s->sme.assoc_req_ie_len,
1693 WLAN_EID_RRM_ENABLED_CAPABILITIES);
1694 if (rm_en) {
1695 /* Need to remove RM Enabled Capabilities element as
1696 * well temporarily, so that it can be placed between
1697 * RSNE and MDE. */
1698 rm_en_len = 2 + rm_en[1];
1699 rm_en_dup = os_memdup(rm_en, rm_en_len);
1700 remove_ie(wpa_s->sme.assoc_req_ie,
1701 &wpa_s->sme.assoc_req_ie_len,
1702 WLAN_EID_RRM_ENABLED_CAPABILITIES);
1703 }
1704 wpa_hexdump(MSG_DEBUG,
1705 "SME: Association Request IEs after FT IE removal",
1706 wpa_s->sme.assoc_req_ie,
1707 wpa_s->sme.assoc_req_ie_len);
1708 if (wpa_s->sme.assoc_req_ie_len + wpa_s->sme.ft_ies_len +
1709 rm_en_len > sizeof(wpa_s->sme.assoc_req_ie)) {
1710 wpa_printf(MSG_ERROR,
1711 "SME: Not enough buffer room for FT IEs in Association Request frame");
1712 os_free(rm_en_dup);
1713 return;
1714 }
1715
1716 os_memmove(wpa_s->sme.assoc_req_ie + wpa_s->sme.ft_ies_len +
1717 rm_en_len,
1718 wpa_s->sme.assoc_req_ie,
1719 wpa_s->sme.assoc_req_ie_len);
1720 pos = wpa_s->sme.ft_ies;
1721 end = pos + wpa_s->sme.ft_ies_len;
1722 wpos = wpa_s->sme.assoc_req_ie;
1723 if (*pos == WLAN_EID_RSN) {
1724 os_memcpy(wpos, pos, 2 + pos[1]);
1725 wpos += 2 + pos[1];
1726 pos += 2 + pos[1];
1727 }
1728 if (rm_en_dup) {
1729 os_memcpy(wpos, rm_en_dup, rm_en_len);
1730 wpos += rm_en_len;
1731 os_free(rm_en_dup);
1732 }
1733 os_memcpy(wpos, pos, end - pos);
1734 wpa_s->sme.assoc_req_ie_len += wpa_s->sme.ft_ies_len +
1735 rm_en_len;
1736 params.wpa_ie = wpa_s->sme.assoc_req_ie;
1737 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
1738 wpa_hexdump(MSG_DEBUG,
1739 "SME: Association Request IEs after FT override",
1740 params.wpa_ie, params.wpa_ie_len);
1741 }
1742 #endif /* CONFIG_IEEE80211R */
1743 params.mode = mode;
1744 params.mgmt_frame_protection = wpa_s->sme.mfp;
1745 params.rrm_used = wpa_s->rrm.rrm_used;
1746 if (wpa_s->sme.prev_bssid_set)
1747 params.prev_bssid = wpa_s->sme.prev_bssid;
1748
1749 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
1750 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
1751 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
1752 params.freq.freq);
1753
1754 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
1755
1756 if (params.wpa_ie == NULL ||
1757 ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
1758 < 0) {
1759 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
1760 os_memset(&elems, 0, sizeof(elems));
1761 }
1762 if (elems.rsn_ie) {
1763 params.wpa_proto = WPA_PROTO_RSN;
1764 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
1765 elems.rsn_ie_len + 2);
1766 } else if (elems.wpa_ie) {
1767 params.wpa_proto = WPA_PROTO_WPA;
1768 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
1769 elems.wpa_ie_len + 2);
1770 } else if (elems.osen) {
1771 params.wpa_proto = WPA_PROTO_OSEN;
1772 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2,
1773 elems.osen_len + 2);
1774 } else
1775 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1776 if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
1777 params.p2p = 1;
1778
1779 if (wpa_s->p2pdev->set_sta_uapsd)
1780 params.uapsd = wpa_s->p2pdev->sta_uapsd;
1781 else
1782 params.uapsd = -1;
1783
1784 if (wpa_drv_associate(wpa_s, &params) < 0) {
1785 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
1786 "driver failed");
1787 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1788 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1789 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1790 return;
1791 }
1792
1793 eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
1794 NULL);
1795
1796 #ifdef CONFIG_TESTING_OPTIONS
1797 wpabuf_free(wpa_s->last_assoc_req_wpa_ie);
1798 wpa_s->last_assoc_req_wpa_ie = NULL;
1799 if (params.wpa_ie)
1800 wpa_s->last_assoc_req_wpa_ie =
1801 wpabuf_alloc_copy(params.wpa_ie, params.wpa_ie_len);
1802 #endif /* CONFIG_TESTING_OPTIONS */
1803 }
1804
1805
1806 int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
1807 const u8 *ies, size_t ies_len)
1808 {
1809 if (md == NULL || ies == NULL) {
1810 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
1811 os_free(wpa_s->sme.ft_ies);
1812 wpa_s->sme.ft_ies = NULL;
1813 wpa_s->sme.ft_ies_len = 0;
1814 wpa_s->sme.ft_used = 0;
1815 return 0;
1816 }
1817
1818 os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
1819 wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
1820 os_free(wpa_s->sme.ft_ies);
1821 wpa_s->sme.ft_ies = os_memdup(ies, ies_len);
1822 if (wpa_s->sme.ft_ies == NULL)
1823 return -1;
1824 wpa_s->sme.ft_ies_len = ies_len;
1825 return 0;
1826 }
1827
1828
1829 static void sme_deauth(struct wpa_supplicant *wpa_s)
1830 {
1831 int bssid_changed;
1832
1833 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
1834
1835 if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
1836 WLAN_REASON_DEAUTH_LEAVING) < 0) {
1837 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
1838 "failed");
1839 }
1840 wpa_s->sme.prev_bssid_set = 0;
1841
1842 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1843 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1844 os_memset(wpa_s->bssid, 0, ETH_ALEN);
1845 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1846 if (bssid_changed)
1847 wpas_notify_bssid_changed(wpa_s);
1848 }
1849
1850
1851 void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
1852 union wpa_event_data *data)
1853 {
1854 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
1855 "status code %d", MAC2STR(wpa_s->pending_bssid),
1856 data->assoc_reject.status_code);
1857
1858 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1859
1860 #ifdef CONFIG_SAE
1861 if (wpa_s->sme.sae_pmksa_caching && wpa_s->current_ssid &&
1862 wpa_key_mgmt_sae(wpa_s->current_ssid->key_mgmt)) {
1863 wpa_dbg(wpa_s, MSG_DEBUG,
1864 "PMKSA caching attempt rejected - drop PMKSA cache entry and fall back to SAE authentication");
1865 wpa_sm_aborted_cached(wpa_s->wpa);
1866 wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid);
1867 if (wpa_s->current_bss) {
1868 struct wpa_bss *bss = wpa_s->current_bss;
1869 struct wpa_ssid *ssid = wpa_s->current_ssid;
1870
1871 wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
1872 WLAN_REASON_DEAUTH_LEAVING);
1873 wpas_connect_work_done(wpa_s);
1874 wpa_supplicant_mark_disassoc(wpa_s);
1875 wpa_supplicant_connect(wpa_s, bss, ssid);
1876 return;
1877 }
1878 }
1879 #endif /* CONFIG_SAE */
1880
1881 /*
1882 * For now, unconditionally terminate the previous authentication. In
1883 * theory, this should not be needed, but mac80211 gets quite confused
1884 * if the authentication is left pending.. Some roaming cases might
1885 * benefit from using the previous authentication, so this could be
1886 * optimized in the future.
1887 */
1888 sme_deauth(wpa_s);
1889 }
1890
1891
1892 void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
1893 union wpa_event_data *data)
1894 {
1895 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
1896 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1897 wpa_supplicant_mark_disassoc(wpa_s);
1898 }
1899
1900
1901 void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
1902 union wpa_event_data *data)
1903 {
1904 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
1905 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1906 wpa_supplicant_mark_disassoc(wpa_s);
1907 }
1908
1909
1910 void sme_event_disassoc(struct wpa_supplicant *wpa_s,
1911 struct disassoc_info *info)
1912 {
1913 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
1914 if (wpa_s->sme.prev_bssid_set) {
1915 /*
1916 * cfg80211/mac80211 can get into somewhat confused state if
1917 * the AP only disassociates us and leaves us in authenticated
1918 * state. For now, force the state to be cleared to avoid
1919 * confusing errors if we try to associate with the AP again.
1920 */
1921 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
1922 "driver state");
1923 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
1924 WLAN_REASON_DEAUTH_LEAVING);
1925 }
1926 }
1927
1928
1929 static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
1930 {
1931 struct wpa_supplicant *wpa_s = eloop_ctx;
1932 if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
1933 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
1934 sme_deauth(wpa_s);
1935 }
1936 }
1937
1938
1939 static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
1940 {
1941 struct wpa_supplicant *wpa_s = eloop_ctx;
1942 if (wpa_s->wpa_state == WPA_ASSOCIATING) {
1943 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
1944 sme_deauth(wpa_s);
1945 }
1946 }
1947
1948
1949 void sme_state_changed(struct wpa_supplicant *wpa_s)
1950 {
1951 /* Make sure timers are cleaned up appropriately. */
1952 if (wpa_s->wpa_state != WPA_ASSOCIATING)
1953 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1954 if (wpa_s->wpa_state != WPA_AUTHENTICATING)
1955 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1956 }
1957
1958
1959 void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
1960 const u8 *prev_pending_bssid)
1961 {
1962 /*
1963 * mac80211-workaround to force deauth on failed auth cmd,
1964 * requires us to remain in authenticating state to allow the
1965 * second authentication attempt to be continued properly.
1966 */
1967 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
1968 "to proceed after disconnection event");
1969 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
1970 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
1971
1972 /*
1973 * Re-arm authentication timer in case auth fails for whatever reason.
1974 */
1975 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1976 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
1977 NULL);
1978 }
1979
1980
1981 void sme_clear_on_disassoc(struct wpa_supplicant *wpa_s)
1982 {
1983 wpa_s->sme.prev_bssid_set = 0;
1984 #ifdef CONFIG_SAE
1985 wpabuf_free(wpa_s->sme.sae_token);
1986 wpa_s->sme.sae_token = NULL;
1987 sae_clear_data(&wpa_s->sme.sae);
1988 #endif /* CONFIG_SAE */
1989 #ifdef CONFIG_IEEE80211R
1990 if (wpa_s->sme.ft_ies || wpa_s->sme.ft_used)
1991 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
1992 #endif /* CONFIG_IEEE80211R */
1993 #ifdef CONFIG_IEEE80211W
1994 sme_stop_sa_query(wpa_s);
1995 #endif /* CONFIG_IEEE80211W */
1996 }
1997
1998
1999 void sme_deinit(struct wpa_supplicant *wpa_s)
2000 {
2001 sme_clear_on_disassoc(wpa_s);
2002
2003 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
2004 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
2005 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
2006 }
2007
2008
2009 static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
2010 const u8 *chan_list, u8 num_channels,
2011 u8 num_intol)
2012 {
2013 struct ieee80211_2040_bss_coex_ie *bc_ie;
2014 struct ieee80211_2040_intol_chan_report *ic_report;
2015 struct wpabuf *buf;
2016
2017 wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR
2018 " (num_channels=%u num_intol=%u)",
2019 MAC2STR(wpa_s->bssid), num_channels, num_intol);
2020 wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels",
2021 chan_list, num_channels);
2022
2023 buf = wpabuf_alloc(2 + /* action.category + action_code */
2024 sizeof(struct ieee80211_2040_bss_coex_ie) +
2025 sizeof(struct ieee80211_2040_intol_chan_report) +
2026 num_channels);
2027 if (buf == NULL)
2028 return;
2029
2030 wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
2031 wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
2032
2033 bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
2034 bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
2035 bc_ie->length = 1;
2036 if (num_intol)
2037 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
2038
2039 if (num_channels > 0) {
2040 ic_report = wpabuf_put(buf, sizeof(*ic_report));
2041 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
2042 ic_report->length = num_channels + 1;
2043 ic_report->op_class = 0;
2044 os_memcpy(wpabuf_put(buf, num_channels), chan_list,
2045 num_channels);
2046 }
2047
2048 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
2049 wpa_s->own_addr, wpa_s->bssid,
2050 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
2051 wpa_msg(wpa_s, MSG_INFO,
2052 "SME: Failed to send 20/40 BSS Coexistence frame");
2053 }
2054
2055 wpabuf_free(buf);
2056 }
2057
2058
2059 int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
2060 {
2061 struct wpa_bss *bss;
2062 const u8 *ie;
2063 u16 ht_cap;
2064 u8 chan_list[P2P_MAX_CHANNELS], channel;
2065 u8 num_channels = 0, num_intol = 0, i;
2066
2067 if (!wpa_s->sme.sched_obss_scan)
2068 return 0;
2069
2070 wpa_s->sme.sched_obss_scan = 0;
2071 if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
2072 return 1;
2073
2074 /*
2075 * Check whether AP uses regulatory triplet or channel triplet in
2076 * country info. Right now the operating class of the BSS channel
2077 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
2078 * based on the assumption that operating class triplet is not used in
2079 * beacon frame. If the First Channel Number/Operating Extension
2080 * Identifier octet has a positive integer value of 201 or greater,
2081 * then its operating class triplet.
2082 *
2083 * TODO: If Supported Operating Classes element is present in beacon
2084 * frame, have to lookup operating class in Annex E and fill them in
2085 * 2040 coex frame.
2086 */
2087 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
2088 if (ie && (ie[1] >= 6) && (ie[5] >= 201))
2089 return 1;
2090
2091 os_memset(chan_list, 0, sizeof(chan_list));
2092
2093 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2094 /* Skip other band bss */
2095 enum hostapd_hw_mode mode;
2096 mode = ieee80211_freq_to_chan(bss->freq, &channel);
2097 if (mode != HOSTAPD_MODE_IEEE80211G &&
2098 mode != HOSTAPD_MODE_IEEE80211B)
2099 continue;
2100
2101 ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
2102 ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
2103 wpa_printf(MSG_DEBUG, "SME OBSS scan BSS " MACSTR
2104 " freq=%u chan=%u ht_cap=0x%x",
2105 MAC2STR(bss->bssid), bss->freq, channel, ht_cap);
2106
2107 if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
2108 if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
2109 num_intol++;
2110
2111 /* Check whether the channel is already considered */
2112 for (i = 0; i < num_channels; i++) {
2113 if (channel == chan_list[i])
2114 break;
2115 }
2116 if (i != num_channels)
2117 continue;
2118
2119 chan_list[num_channels++] = channel;
2120 }
2121 }
2122
2123 sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
2124 return 1;
2125 }
2126
2127
2128 static void wpa_obss_scan_freqs_list(struct wpa_supplicant *wpa_s,
2129 struct wpa_driver_scan_params *params)
2130 {
2131 /* Include only affected channels */
2132 struct hostapd_hw_modes *mode;
2133 int count, i;
2134 int start, end;
2135
2136 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
2137 HOSTAPD_MODE_IEEE80211G);
2138 if (mode == NULL) {
2139 /* No channels supported in this band - use empty list */
2140 params->freqs = os_zalloc(sizeof(int));
2141 return;
2142 }
2143
2144 if (wpa_s->sme.ht_sec_chan == HT_SEC_CHAN_UNKNOWN &&
2145 wpa_s->current_bss) {
2146 const u8 *ie;
2147
2148 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_OPERATION);
2149 if (ie && ie[1] >= 2) {
2150 u8 o;
2151
2152 o = ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK;
2153 if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
2154 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_ABOVE;
2155 else if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
2156 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_BELOW;
2157 }
2158 }
2159
2160 start = wpa_s->assoc_freq - 10;
2161 end = wpa_s->assoc_freq + 10;
2162 switch (wpa_s->sme.ht_sec_chan) {
2163 case HT_SEC_CHAN_UNKNOWN:
2164 /* HT40+ possible on channels 1..9 */
2165 if (wpa_s->assoc_freq <= 2452)
2166 start -= 20;
2167 /* HT40- possible on channels 5-13 */
2168 if (wpa_s->assoc_freq >= 2432)
2169 end += 20;
2170 break;
2171 case HT_SEC_CHAN_ABOVE:
2172 end += 20;
2173 break;
2174 case HT_SEC_CHAN_BELOW:
2175 start -= 20;
2176 break;
2177 }
2178 wpa_printf(MSG_DEBUG,
2179 "OBSS: assoc_freq %d possible affected range %d-%d",
2180 wpa_s->assoc_freq, start, end);
2181
2182 params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
2183 if (params->freqs == NULL)
2184 return;
2185 for (count = 0, i = 0; i < mode->num_channels; i++) {
2186 int freq;
2187
2188 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
2189 continue;
2190 freq = mode->channels[i].freq;
2191 if (freq - 10 >= end || freq + 10 <= start)
2192 continue; /* not affected */
2193 params->freqs[count++] = freq;
2194 }
2195 }
2196
2197
2198 static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
2199 {
2200 struct wpa_supplicant *wpa_s = eloop_ctx;
2201 struct wpa_driver_scan_params params;
2202
2203 if (!wpa_s->current_bss) {
2204 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
2205 return;
2206 }
2207
2208 os_memset(&params, 0, sizeof(params));
2209 wpa_obss_scan_freqs_list(wpa_s, &params);
2210 params.low_priority = 1;
2211 wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
2212
2213 if (wpa_supplicant_trigger_scan(wpa_s, &params))
2214 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
2215 else
2216 wpa_s->sme.sched_obss_scan = 1;
2217 os_free(params.freqs);
2218
2219 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
2220 sme_obss_scan_timeout, wpa_s, NULL);
2221 }
2222
2223
2224 void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
2225 {
2226 const u8 *ie;
2227 struct wpa_bss *bss = wpa_s->current_bss;
2228 struct wpa_ssid *ssid = wpa_s->current_ssid;
2229 struct hostapd_hw_modes *hw_mode = NULL;
2230 int i;
2231
2232 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
2233 wpa_s->sme.sched_obss_scan = 0;
2234 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_UNKNOWN;
2235 if (!enable)
2236 return;
2237
2238 /*
2239 * Schedule OBSS scan if driver is using station SME in wpa_supplicant
2240 * or it expects OBSS scan to be performed by wpa_supplicant.
2241 */
2242 if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
2243 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
2244 ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA)
2245 return;
2246
2247 if (!wpa_s->hw.modes)
2248 return;
2249
2250 /* only HT caps in 11g mode are relevant */
2251 for (i = 0; i < wpa_s->hw.num_modes; i++) {
2252 hw_mode = &wpa_s->hw.modes[i];
2253 if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
2254 break;
2255 }
2256
2257 /* Driver does not support HT40 for 11g or doesn't have 11g. */
2258 if (i == wpa_s->hw.num_modes || !hw_mode ||
2259 !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
2260 return;
2261
2262 if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
2263 return; /* Not associated on 2.4 GHz band */
2264
2265 /* Check whether AP supports HT40 */
2266 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
2267 if (!ie || ie[1] < 2 ||
2268 !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
2269 return; /* AP does not support HT40 */
2270
2271 ie = wpa_bss_get_ie(wpa_s->current_bss,
2272 WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
2273 if (!ie || ie[1] < 14)
2274 return; /* AP does not request OBSS scans */
2275
2276 wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
2277 if (wpa_s->sme.obss_scan_int < 10) {
2278 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
2279 "replaced with the minimum 10 sec",
2280 wpa_s->sme.obss_scan_int);
2281 wpa_s->sme.obss_scan_int = 10;
2282 }
2283 wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
2284 wpa_s->sme.obss_scan_int);
2285 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
2286 sme_obss_scan_timeout, wpa_s, NULL);
2287 }
2288
2289
2290 #ifdef CONFIG_IEEE80211W
2291
2292 static const unsigned int sa_query_max_timeout = 1000;
2293 static const unsigned int sa_query_retry_timeout = 201;
2294 static const unsigned int sa_query_ch_switch_max_delay = 5000; /* in usec */
2295
2296 static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
2297 {
2298 u32 tu;
2299 struct os_reltime now, passed;
2300 os_get_reltime(&now);
2301 os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed);
2302 tu = (passed.sec * 1000000 + passed.usec) / 1024;
2303 if (sa_query_max_timeout < tu) {
2304 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
2305 sme_stop_sa_query(wpa_s);
2306 wpa_supplicant_deauthenticate(
2307 wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
2308 return 1;
2309 }
2310
2311 return 0;
2312 }
2313
2314
2315 static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
2316 const u8 *trans_id)
2317 {
2318 u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN + OCV_OCI_EXTENDED_LEN];
2319 u8 req_len = 2 + WLAN_SA_QUERY_TR_ID_LEN;
2320
2321 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
2322 MACSTR, MAC2STR(wpa_s->bssid));
2323 wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
2324 trans_id, WLAN_SA_QUERY_TR_ID_LEN);
2325 req[0] = WLAN_ACTION_SA_QUERY;
2326 req[1] = WLAN_SA_QUERY_REQUEST;
2327 os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
2328
2329 #ifdef CONFIG_OCV
2330 if (wpa_sm_ocv_enabled(wpa_s->wpa)) {
2331 struct wpa_channel_info ci;
2332
2333 if (wpa_drv_channel_info(wpa_s, &ci) != 0) {
2334 wpa_printf(MSG_WARNING,
2335 "Failed to get channel info for OCI element in SA Query Request frame");
2336 return;
2337 }
2338
2339 if (ocv_insert_extended_oci(&ci, req + req_len) < 0)
2340 return;
2341
2342 req_len += OCV_OCI_EXTENDED_LEN;
2343 }
2344 #endif /* CONFIG_OCV */
2345
2346 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
2347 wpa_s->own_addr, wpa_s->bssid,
2348 req, req_len, 0) < 0)
2349 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
2350 "Request");
2351 }
2352
2353
2354 static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
2355 {
2356 struct wpa_supplicant *wpa_s = eloop_ctx;
2357 unsigned int timeout, sec, usec;
2358 u8 *trans_id, *nbuf;
2359
2360 if (wpa_s->sme.sa_query_count > 0 &&
2361 sme_check_sa_query_timeout(wpa_s))
2362 return;
2363
2364 nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
2365 wpa_s->sme.sa_query_count + 1,
2366 WLAN_SA_QUERY_TR_ID_LEN);
2367 if (nbuf == NULL) {
2368 sme_stop_sa_query(wpa_s);
2369 return;
2370 }
2371 if (wpa_s->sme.sa_query_count == 0) {
2372 /* Starting a new SA Query procedure */
2373 os_get_reltime(&wpa_s->sme.sa_query_start);
2374 }
2375 trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
2376 wpa_s->sme.sa_query_trans_id = nbuf;
2377 wpa_s->sme.sa_query_count++;
2378
2379 if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) {
2380 wpa_printf(MSG_DEBUG, "Could not generate SA Query ID");
2381 sme_stop_sa_query(wpa_s);
2382 return;
2383 }
2384
2385 timeout = sa_query_retry_timeout;
2386 sec = ((timeout / 1000) * 1024) / 1000;
2387 usec = (timeout % 1000) * 1024;
2388 eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
2389
2390 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
2391 wpa_s->sme.sa_query_count);
2392
2393 sme_send_sa_query_req(wpa_s, trans_id);
2394 }
2395
2396
2397 static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
2398 {
2399 sme_sa_query_timer(wpa_s, NULL);
2400 }
2401
2402
2403 static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
2404 {
2405 if (wpa_s->sme.sa_query_trans_id)
2406 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Stop SA Query");
2407 eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
2408 os_free(wpa_s->sme.sa_query_trans_id);
2409 wpa_s->sme.sa_query_trans_id = NULL;
2410 wpa_s->sme.sa_query_count = 0;
2411 }
2412
2413
2414 void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
2415 const u8 *da, u16 reason_code)
2416 {
2417 struct wpa_ssid *ssid;
2418 struct os_reltime now;
2419
2420 if (wpa_s->wpa_state != WPA_COMPLETED)
2421 return;
2422 ssid = wpa_s->current_ssid;
2423 if (wpas_get_ssid_pmf(wpa_s, ssid) == NO_MGMT_FRAME_PROTECTION)
2424 return;
2425 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
2426 return;
2427 if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
2428 reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
2429 return;
2430 if (wpa_s->sme.sa_query_count > 0)
2431 return;
2432
2433 os_get_reltime(&now);
2434 if (wpa_s->sme.last_unprot_disconnect.sec &&
2435 !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10))
2436 return; /* limit SA Query procedure frequency */
2437 wpa_s->sme.last_unprot_disconnect = now;
2438
2439 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
2440 "possible AP/STA state mismatch - trigger SA Query");
2441 sme_start_sa_query(wpa_s);
2442 }
2443
2444
2445 void sme_event_ch_switch(struct wpa_supplicant *wpa_s)
2446 {
2447 unsigned int usec;
2448 u32 _rand;
2449
2450 if (wpa_s->wpa_state != WPA_COMPLETED ||
2451 !wpa_sm_ocv_enabled(wpa_s->wpa))
2452 return;
2453
2454 wpa_dbg(wpa_s, MSG_DEBUG,
2455 "SME: Channel switch completed - trigger new SA Query to verify new operating channel");
2456 sme_stop_sa_query(wpa_s);
2457
2458 if (os_get_random((u8 *) &_rand, sizeof(_rand)) < 0)
2459 _rand = os_random();
2460 usec = _rand % (sa_query_ch_switch_max_delay + 1);
2461 eloop_register_timeout(0, usec, sme_sa_query_timer, wpa_s, NULL);
2462 }
2463
2464
2465 static void sme_process_sa_query_request(struct wpa_supplicant *wpa_s,
2466 const u8 *sa, const u8 *data,
2467 size_t len)
2468 {
2469 u8 resp[2 + WLAN_SA_QUERY_TR_ID_LEN + OCV_OCI_EXTENDED_LEN];
2470 u8 resp_len = 2 + WLAN_SA_QUERY_TR_ID_LEN;
2471
2472 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Response to "
2473 MACSTR, MAC2STR(wpa_s->bssid));
2474
2475 resp[0] = WLAN_ACTION_SA_QUERY;
2476 resp[1] = WLAN_SA_QUERY_RESPONSE;
2477 os_memcpy(resp + 2, data + 1, WLAN_SA_QUERY_TR_ID_LEN);
2478
2479 #ifdef CONFIG_OCV
2480 if (wpa_sm_ocv_enabled(wpa_s->wpa)) {
2481 struct wpa_channel_info ci;
2482
2483 if (wpa_drv_channel_info(wpa_s, &ci) != 0) {
2484 wpa_printf(MSG_WARNING,
2485 "Failed to get channel info for OCI element in SA Query Response frame");
2486 return;
2487 }
2488
2489 if (ocv_insert_extended_oci(&ci, resp + resp_len) < 0)
2490 return;
2491
2492 resp_len += OCV_OCI_EXTENDED_LEN;
2493 }
2494 #endif /* CONFIG_OCV */
2495
2496 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
2497 wpa_s->own_addr, wpa_s->bssid,
2498 resp, resp_len, 0) < 0)
2499 wpa_msg(wpa_s, MSG_INFO,
2500 "SME: Failed to send SA Query Response");
2501 }
2502
2503
2504 static void sme_process_sa_query_response(struct wpa_supplicant *wpa_s,
2505 const u8 *sa, const u8 *data,
2506 size_t len)
2507 {
2508 int i;
2509
2510 if (!wpa_s->sme.sa_query_trans_id)
2511 return;
2512
2513 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
2514 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
2515
2516 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
2517 return;
2518
2519 for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
2520 if (os_memcmp(wpa_s->sme.sa_query_trans_id +
2521 i * WLAN_SA_QUERY_TR_ID_LEN,
2522 data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
2523 break;
2524 }
2525
2526 if (i >= wpa_s->sme.sa_query_count) {
2527 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
2528 "transaction identifier found");
2529 return;
2530 }
2531
2532 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
2533 "from " MACSTR, MAC2STR(sa));
2534 sme_stop_sa_query(wpa_s);
2535 }
2536
2537
2538 void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
2539 const u8 *data, size_t len)
2540 {
2541 if (len < 1 + WLAN_SA_QUERY_TR_ID_LEN)
2542 return;
2543
2544 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query frame from "
2545 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
2546
2547 #ifdef CONFIG_OCV
2548 if (wpa_sm_ocv_enabled(wpa_s->wpa)) {
2549 struct ieee802_11_elems elems;
2550 struct wpa_channel_info ci;
2551
2552 if (ieee802_11_parse_elems(data + 1 + WLAN_SA_QUERY_TR_ID_LEN,
2553 len - 1 - WLAN_SA_QUERY_TR_ID_LEN,
2554 &elems, 1) == ParseFailed) {
2555 wpa_printf(MSG_DEBUG,
2556 "SA Query: Failed to parse elements");
2557 return;
2558 }
2559
2560 if (wpa_drv_channel_info(wpa_s, &ci) != 0) {
2561 wpa_printf(MSG_WARNING,
2562 "Failed to get channel info to validate received OCI in SA Query Action frame");
2563 return;
2564 }
2565
2566 if (ocv_verify_tx_params(elems.oci, elems.oci_len, &ci,
2567 channel_width_to_int(ci.chanwidth),
2568 ci.seg1_idx) != 0) {
2569 wpa_printf(MSG_WARNING, "%s", ocv_errorstr);
2570 return;
2571 }
2572 }
2573 #endif /* CONFIG_OCV */
2574
2575 if (data[0] == WLAN_SA_QUERY_REQUEST)
2576 sme_process_sa_query_request(wpa_s, sa, data, len);
2577 else if (data[0] == WLAN_SA_QUERY_RESPONSE)
2578 sme_process_sa_query_response(wpa_s, sa, data, len);
2579 }
2580
2581 #endif /* CONFIG_IEEE80211W */
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