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FT: Fix CONFIG_IEEE80211X=y build without CONFIG_FILS=y
[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 "eapol_supp/eapol_supp_sm.h"
16 #include "common/wpa_common.h"
17 #include "common/sae.h"
18 #include "rsn_supp/wpa.h"
19 #include "rsn_supp/pmksa_cache.h"
20 #include "config.h"
21 #include "wpa_supplicant_i.h"
22 #include "driver_i.h"
23 #include "wpas_glue.h"
24 #include "wps_supplicant.h"
25 #include "p2p_supplicant.h"
26 #include "notify.h"
27 #include "bss.h"
28 #include "scan.h"
29 #include "sme.h"
30 #include "hs20_supplicant.h"
31
32 #define SME_AUTH_TIMEOUT 5
33 #define SME_ASSOC_TIMEOUT 5
34
35 static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx);
36 static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx);
37 static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx);
38 #ifdef CONFIG_IEEE80211W
39 static void sme_stop_sa_query(struct wpa_supplicant *wpa_s);
40 #endif /* CONFIG_IEEE80211W */
41
42
43 #ifdef CONFIG_SAE
44
45 static int index_within_array(const int *array, int idx)
46 {
47 int i;
48 for (i = 0; i < idx; i++) {
49 if (array[i] <= 0)
50 return 0;
51 }
52 return 1;
53 }
54
55
56 static int sme_set_sae_group(struct wpa_supplicant *wpa_s)
57 {
58 int *groups = wpa_s->conf->sae_groups;
59 int default_groups[] = { 19, 20, 21, 25, 26, 0 };
60
61 if (!groups || groups[0] <= 0)
62 groups = default_groups;
63
64 /* Configuration may have changed, so validate current index */
65 if (!index_within_array(groups, wpa_s->sme.sae_group_index))
66 return -1;
67
68 for (;;) {
69 int group = groups[wpa_s->sme.sae_group_index];
70 if (group <= 0)
71 break;
72 if (sae_set_group(&wpa_s->sme.sae, group) == 0) {
73 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected SAE group %d",
74 wpa_s->sme.sae.group);
75 return 0;
76 }
77 wpa_s->sme.sae_group_index++;
78 }
79
80 return -1;
81 }
82
83
84 static struct wpabuf * sme_auth_build_sae_commit(struct wpa_supplicant *wpa_s,
85 struct wpa_ssid *ssid,
86 const u8 *bssid, int external)
87 {
88 struct wpabuf *buf;
89 size_t len;
90 const char *password;
91
92 #ifdef CONFIG_TESTING_OPTIONS
93 if (wpa_s->sae_commit_override) {
94 wpa_printf(MSG_DEBUG, "SAE: TESTING - commit override");
95 buf = wpabuf_alloc(4 + wpabuf_len(wpa_s->sae_commit_override));
96 if (!buf)
97 return NULL;
98 wpabuf_put_le16(buf, 1); /* Transaction seq# */
99 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
100 wpabuf_put_buf(buf, wpa_s->sae_commit_override);
101 return buf;
102 }
103 #endif /* CONFIG_TESTING_OPTIONS */
104
105 password = ssid->sae_password;
106 if (!password)
107 password = ssid->passphrase;
108 if (!password) {
109 wpa_printf(MSG_DEBUG, "SAE: No password available");
110 return NULL;
111 }
112
113 if (sme_set_sae_group(wpa_s) < 0) {
114 wpa_printf(MSG_DEBUG, "SAE: Failed to select group");
115 return NULL;
116 }
117
118 if (sae_prepare_commit(wpa_s->own_addr, bssid,
119 (u8 *) password, os_strlen(password),
120 ssid->sae_password_id,
121 &wpa_s->sme.sae) < 0) {
122 wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE");
123 return NULL;
124 }
125
126 len = wpa_s->sme.sae_token ? wpabuf_len(wpa_s->sme.sae_token) : 0;
127 if (ssid->sae_password_id)
128 len += 4 + os_strlen(ssid->sae_password_id);
129 buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + len);
130 if (buf == NULL)
131 return NULL;
132 if (!external) {
133 wpabuf_put_le16(buf, 1); /* Transaction seq# */
134 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
135 }
136 sae_write_commit(&wpa_s->sme.sae, buf, wpa_s->sme.sae_token,
137 ssid->sae_password_id);
138
139 return buf;
140 }
141
142
143 static struct wpabuf * sme_auth_build_sae_confirm(struct wpa_supplicant *wpa_s,
144 int external)
145 {
146 struct wpabuf *buf;
147
148 buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN);
149 if (buf == NULL)
150 return NULL;
151
152 if (!external) {
153 wpabuf_put_le16(buf, 2); /* Transaction seq# */
154 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
155 }
156 sae_write_confirm(&wpa_s->sme.sae, buf);
157
158 return buf;
159 }
160
161 #endif /* CONFIG_SAE */
162
163
164 /**
165 * sme_auth_handle_rrm - Handle RRM aspects of current authentication attempt
166 * @wpa_s: Pointer to wpa_supplicant data
167 * @bss: Pointer to the bss which is the target of authentication attempt
168 */
169 static void sme_auth_handle_rrm(struct wpa_supplicant *wpa_s,
170 struct wpa_bss *bss)
171 {
172 const u8 rrm_ie_len = 5;
173 u8 *pos;
174 const u8 *rrm_ie;
175
176 wpa_s->rrm.rrm_used = 0;
177
178 wpa_printf(MSG_DEBUG,
179 "RRM: Determining whether RRM can be used - device support: 0x%x",
180 wpa_s->drv_rrm_flags);
181
182 rrm_ie = wpa_bss_get_ie(bss, WLAN_EID_RRM_ENABLED_CAPABILITIES);
183 if (!rrm_ie || !(bss->caps & IEEE80211_CAP_RRM)) {
184 wpa_printf(MSG_DEBUG, "RRM: No RRM in network");
185 return;
186 }
187
188 if (!((wpa_s->drv_rrm_flags &
189 WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) &&
190 (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET)) &&
191 !(wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_SUPPORT_RRM)) {
192 wpa_printf(MSG_DEBUG,
193 "RRM: Insufficient RRM support in driver - do not use RRM");
194 return;
195 }
196
197 if (sizeof(wpa_s->sme.assoc_req_ie) <
198 wpa_s->sme.assoc_req_ie_len + rrm_ie_len + 2) {
199 wpa_printf(MSG_INFO,
200 "RRM: Unable to use RRM, no room for RRM IE");
201 return;
202 }
203
204 wpa_printf(MSG_DEBUG, "RRM: Adding RRM IE to Association Request");
205 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
206 os_memset(pos, 0, 2 + rrm_ie_len);
207 *pos++ = WLAN_EID_RRM_ENABLED_CAPABILITIES;
208 *pos++ = rrm_ie_len;
209
210 /* Set supported capabilites flags */
211 if (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION)
212 *pos |= WLAN_RRM_CAPS_LINK_MEASUREMENT;
213
214 *pos |= WLAN_RRM_CAPS_BEACON_REPORT_PASSIVE |
215 WLAN_RRM_CAPS_BEACON_REPORT_ACTIVE |
216 WLAN_RRM_CAPS_BEACON_REPORT_TABLE;
217
218 if (wpa_s->lci)
219 pos[1] |= WLAN_RRM_CAPS_LCI_MEASUREMENT;
220
221 wpa_s->sme.assoc_req_ie_len += rrm_ie_len + 2;
222 wpa_s->rrm.rrm_used = 1;
223 }
224
225
226 static void sme_send_authentication(struct wpa_supplicant *wpa_s,
227 struct wpa_bss *bss, struct wpa_ssid *ssid,
228 int start)
229 {
230 struct wpa_driver_auth_params params;
231 struct wpa_ssid *old_ssid;
232 #ifdef CONFIG_IEEE80211R
233 const u8 *ie;
234 #endif /* CONFIG_IEEE80211R */
235 #if defined(CONFIG_IEEE80211R) || defined(CONFIG_FILS)
236 const u8 *md = NULL;
237 #endif /* CONFIG_IEEE80211R || CONFIG_FILS */
238 int i, bssid_changed;
239 struct wpabuf *resp = NULL;
240 u8 ext_capab[18];
241 int ext_capab_len;
242 int skip_auth;
243 u8 *wpa_ie;
244 size_t wpa_ie_len;
245 #ifdef CONFIG_MBO
246 const u8 *mbo_ie;
247 #endif /* CONFIG_MBO */
248
249 if (bss == NULL) {
250 wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for "
251 "the network");
252 wpas_connect_work_done(wpa_s);
253 return;
254 }
255
256 skip_auth = wpa_s->conf->reassoc_same_bss_optim &&
257 wpa_s->reassoc_same_bss;
258 wpa_s->current_bss = bss;
259
260 os_memset(&params, 0, sizeof(params));
261 wpa_s->reassociate = 0;
262
263 params.freq = bss->freq;
264 params.bssid = bss->bssid;
265 params.ssid = bss->ssid;
266 params.ssid_len = bss->ssid_len;
267 params.p2p = ssid->p2p_group;
268
269 if (wpa_s->sme.ssid_len != params.ssid_len ||
270 os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
271 wpa_s->sme.prev_bssid_set = 0;
272
273 wpa_s->sme.freq = params.freq;
274 os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
275 wpa_s->sme.ssid_len = params.ssid_len;
276
277 params.auth_alg = WPA_AUTH_ALG_OPEN;
278 #ifdef IEEE8021X_EAPOL
279 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
280 if (ssid->leap) {
281 if (ssid->non_leap == 0)
282 params.auth_alg = WPA_AUTH_ALG_LEAP;
283 else
284 params.auth_alg |= WPA_AUTH_ALG_LEAP;
285 }
286 }
287 #endif /* IEEE8021X_EAPOL */
288 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
289 params.auth_alg);
290 if (ssid->auth_alg) {
291 params.auth_alg = ssid->auth_alg;
292 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
293 "0x%x", params.auth_alg);
294 }
295 #ifdef CONFIG_SAE
296 wpa_s->sme.sae_pmksa_caching = 0;
297 if (wpa_key_mgmt_sae(ssid->key_mgmt)) {
298 const u8 *rsn;
299 struct wpa_ie_data ied;
300
301 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
302 if (!rsn) {
303 wpa_dbg(wpa_s, MSG_DEBUG,
304 "SAE enabled, but target BSS does not advertise RSN");
305 } else if (wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 &&
306 wpa_key_mgmt_sae(ied.key_mgmt)) {
307 wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg");
308 params.auth_alg = WPA_AUTH_ALG_SAE;
309 } else {
310 wpa_dbg(wpa_s, MSG_DEBUG,
311 "SAE enabled, but target BSS does not advertise SAE AKM for RSN");
312 }
313 }
314 #endif /* CONFIG_SAE */
315
316 for (i = 0; i < NUM_WEP_KEYS; i++) {
317 if (ssid->wep_key_len[i])
318 params.wep_key[i] = ssid->wep_key[i];
319 params.wep_key_len[i] = ssid->wep_key_len[i];
320 }
321 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
322
323 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
324 os_memset(wpa_s->bssid, 0, ETH_ALEN);
325 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
326 if (bssid_changed)
327 wpas_notify_bssid_changed(wpa_s);
328
329 if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
330 wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
331 wpa_key_mgmt_wpa(ssid->key_mgmt)) {
332 int try_opportunistic;
333 const u8 *cache_id = NULL;
334
335 try_opportunistic = (ssid->proactive_key_caching < 0 ?
336 wpa_s->conf->okc :
337 ssid->proactive_key_caching) &&
338 (ssid->proto & WPA_PROTO_RSN);
339 #ifdef CONFIG_FILS
340 if (wpa_key_mgmt_fils(ssid->key_mgmt))
341 cache_id = wpa_bss_get_fils_cache_id(bss);
342 #endif /* CONFIG_FILS */
343 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
344 wpa_s->current_ssid,
345 try_opportunistic, cache_id,
346 0) == 0)
347 eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
348 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
349 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
350 wpa_s->sme.assoc_req_ie,
351 &wpa_s->sme.assoc_req_ie_len)) {
352 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
353 "key management and encryption suites");
354 wpas_connect_work_done(wpa_s);
355 return;
356 }
357 #ifdef CONFIG_HS20
358 } else if (wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE) &&
359 (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)) {
360 /* No PMKSA caching, but otherwise similar to RSN/WPA */
361 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
362 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
363 wpa_s->sme.assoc_req_ie,
364 &wpa_s->sme.assoc_req_ie_len)) {
365 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
366 "key management and encryption suites");
367 wpas_connect_work_done(wpa_s);
368 return;
369 }
370 #endif /* CONFIG_HS20 */
371 } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
372 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) {
373 /*
374 * Both WPA and non-WPA IEEE 802.1X enabled in configuration -
375 * use non-WPA since the scan results did not indicate that the
376 * AP is using WPA or WPA2.
377 */
378 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
379 wpa_s->sme.assoc_req_ie_len = 0;
380 } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
381 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
382 if (wpa_supplicant_set_suites(wpa_s, NULL, 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 (no "
387 "scan results)");
388 wpas_connect_work_done(wpa_s);
389 return;
390 }
391 #ifdef CONFIG_WPS
392 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
393 struct wpabuf *wps_ie;
394 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
395 if (wps_ie && wpabuf_len(wps_ie) <=
396 sizeof(wpa_s->sme.assoc_req_ie)) {
397 wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
398 os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
399 wpa_s->sme.assoc_req_ie_len);
400 } else
401 wpa_s->sme.assoc_req_ie_len = 0;
402 wpabuf_free(wps_ie);
403 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
404 #endif /* CONFIG_WPS */
405 } else {
406 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
407 wpa_s->sme.assoc_req_ie_len = 0;
408 }
409
410 /* In case the WPA vendor IE is used, it should be placed after all the
411 * non-vendor IEs, as the lower layer expects the IEs to be ordered as
412 * defined in the standard. Store the WPA IE so it can later be
413 * inserted at the correct location.
414 */
415 wpa_ie = NULL;
416 wpa_ie_len = 0;
417 if (wpa_s->wpa_proto == WPA_PROTO_WPA) {
418 wpa_ie = os_memdup(wpa_s->sme.assoc_req_ie,
419 wpa_s->sme.assoc_req_ie_len);
420 if (wpa_ie) {
421 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Storing WPA IE");
422
423 wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
424 wpa_s->sme.assoc_req_ie_len = 0;
425 } else {
426 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed copy WPA IE");
427 wpas_connect_work_done(wpa_s);
428 return;
429 }
430 }
431
432 #ifdef CONFIG_IEEE80211R
433 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
434 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
435 md = ie + 2;
436 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
437 if (md) {
438 /* Prepare for the next transition */
439 wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
440 }
441
442 if (md && !wpa_key_mgmt_ft(ssid->key_mgmt))
443 md = NULL;
444 if (md) {
445 wpa_dbg(wpa_s, MSG_DEBUG, "SME: FT mobility domain %02x%02x",
446 md[0], md[1]);
447
448 if (wpa_s->sme.assoc_req_ie_len + 5 <
449 sizeof(wpa_s->sme.assoc_req_ie)) {
450 struct rsn_mdie *mdie;
451 u8 *pos = wpa_s->sme.assoc_req_ie +
452 wpa_s->sme.assoc_req_ie_len;
453 *pos++ = WLAN_EID_MOBILITY_DOMAIN;
454 *pos++ = sizeof(*mdie);
455 mdie = (struct rsn_mdie *) pos;
456 os_memcpy(mdie->mobility_domain, md,
457 MOBILITY_DOMAIN_ID_LEN);
458 mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
459 wpa_s->sme.assoc_req_ie_len += 5;
460 }
461
462 if (wpa_s->sme.ft_used &&
463 os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
464 wpa_sm_has_ptk(wpa_s->wpa)) {
465 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT "
466 "over-the-air");
467 params.auth_alg = WPA_AUTH_ALG_FT;
468 params.ie = wpa_s->sme.ft_ies;
469 params.ie_len = wpa_s->sme.ft_ies_len;
470 }
471 }
472 #endif /* CONFIG_IEEE80211R */
473
474 #ifdef CONFIG_IEEE80211W
475 wpa_s->sme.mfp = wpas_get_ssid_pmf(wpa_s, ssid);
476 if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) {
477 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
478 struct wpa_ie_data _ie;
479 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
480 _ie.capabilities &
481 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
482 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports "
483 "MFP: require MFP");
484 wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
485 }
486 }
487 #endif /* CONFIG_IEEE80211W */
488
489 #ifdef CONFIG_P2P
490 if (wpa_s->global->p2p) {
491 u8 *pos;
492 size_t len;
493 int res;
494 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
495 len = sizeof(wpa_s->sme.assoc_req_ie) -
496 wpa_s->sme.assoc_req_ie_len;
497 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
498 ssid->p2p_group);
499 if (res >= 0)
500 wpa_s->sme.assoc_req_ie_len += res;
501 }
502 #endif /* CONFIG_P2P */
503
504 #ifdef CONFIG_FST
505 if (wpa_s->fst_ies) {
506 int fst_ies_len = wpabuf_len(wpa_s->fst_ies);
507
508 if (wpa_s->sme.assoc_req_ie_len + fst_ies_len <=
509 sizeof(wpa_s->sme.assoc_req_ie)) {
510 os_memcpy(wpa_s->sme.assoc_req_ie +
511 wpa_s->sme.assoc_req_ie_len,
512 wpabuf_head(wpa_s->fst_ies),
513 fst_ies_len);
514 wpa_s->sme.assoc_req_ie_len += fst_ies_len;
515 }
516 }
517 #endif /* CONFIG_FST */
518
519 sme_auth_handle_rrm(wpa_s, bss);
520
521 wpa_s->sme.assoc_req_ie_len += wpas_supp_op_class_ie(
522 wpa_s, bss->freq,
523 wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
524 sizeof(wpa_s->sme.assoc_req_ie) - wpa_s->sme.assoc_req_ie_len);
525
526 if (params.p2p)
527 wpa_drv_get_ext_capa(wpa_s, WPA_IF_P2P_CLIENT);
528 else
529 wpa_drv_get_ext_capa(wpa_s, WPA_IF_STATION);
530
531 ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab,
532 sizeof(ext_capab));
533 if (ext_capab_len > 0) {
534 u8 *pos = wpa_s->sme.assoc_req_ie;
535 if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
536 pos += 2 + pos[1];
537 os_memmove(pos + ext_capab_len, pos,
538 wpa_s->sme.assoc_req_ie_len -
539 (pos - wpa_s->sme.assoc_req_ie));
540 wpa_s->sme.assoc_req_ie_len += ext_capab_len;
541 os_memcpy(pos, ext_capab, ext_capab_len);
542 }
543
544 #ifdef CONFIG_HS20
545 if (is_hs20_network(wpa_s, ssid, bss)) {
546 struct wpabuf *hs20;
547
548 hs20 = wpabuf_alloc(20 + MAX_ROAMING_CONS_OI_LEN);
549 if (hs20) {
550 int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid);
551 size_t len;
552
553 wpas_hs20_add_indication(hs20, pps_mo_id);
554 wpas_hs20_add_roam_cons_sel(hs20, ssid);
555 len = sizeof(wpa_s->sme.assoc_req_ie) -
556 wpa_s->sme.assoc_req_ie_len;
557 if (wpabuf_len(hs20) <= len) {
558 os_memcpy(wpa_s->sme.assoc_req_ie +
559 wpa_s->sme.assoc_req_ie_len,
560 wpabuf_head(hs20), wpabuf_len(hs20));
561 wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
562 }
563 wpabuf_free(hs20);
564 }
565 }
566 #endif /* CONFIG_HS20 */
567
568 if (wpa_ie) {
569 size_t len;
570
571 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Reinsert WPA IE");
572
573 len = sizeof(wpa_s->sme.assoc_req_ie) -
574 wpa_s->sme.assoc_req_ie_len;
575
576 if (len > wpa_ie_len) {
577 os_memcpy(wpa_s->sme.assoc_req_ie +
578 wpa_s->sme.assoc_req_ie_len,
579 wpa_ie, wpa_ie_len);
580 wpa_s->sme.assoc_req_ie_len += wpa_ie_len;
581 } else {
582 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Failed to add WPA IE");
583 }
584
585 os_free(wpa_ie);
586 }
587
588 if (wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]) {
589 struct wpabuf *buf = wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ];
590 size_t len;
591
592 len = sizeof(wpa_s->sme.assoc_req_ie) -
593 wpa_s->sme.assoc_req_ie_len;
594 if (wpabuf_len(buf) <= len) {
595 os_memcpy(wpa_s->sme.assoc_req_ie +
596 wpa_s->sme.assoc_req_ie_len,
597 wpabuf_head(buf), wpabuf_len(buf));
598 wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf);
599 }
600 }
601
602 #ifdef CONFIG_MBO
603 mbo_ie = wpa_bss_get_vendor_ie(bss, MBO_IE_VENDOR_TYPE);
604 if (mbo_ie) {
605 int len;
606
607 len = wpas_mbo_ie(wpa_s, wpa_s->sme.assoc_req_ie +
608 wpa_s->sme.assoc_req_ie_len,
609 sizeof(wpa_s->sme.assoc_req_ie) -
610 wpa_s->sme.assoc_req_ie_len,
611 !!mbo_attr_from_mbo_ie(mbo_ie,
612 OCE_ATTR_ID_CAPA_IND));
613 if (len >= 0)
614 wpa_s->sme.assoc_req_ie_len += len;
615 }
616 #endif /* CONFIG_MBO */
617
618 #ifdef CONFIG_SAE
619 if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE &&
620 pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, ssid, 0,
621 NULL, WPA_KEY_MGMT_SAE) == 0) {
622 wpa_dbg(wpa_s, MSG_DEBUG,
623 "PMKSA cache entry found - try to use PMKSA caching instead of new SAE authentication");
624 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa);
625 params.auth_alg = WPA_AUTH_ALG_OPEN;
626 wpa_s->sme.sae_pmksa_caching = 1;
627 }
628
629 if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE) {
630 if (start)
631 resp = sme_auth_build_sae_commit(wpa_s, ssid,
632 bss->bssid, 0);
633 else
634 resp = sme_auth_build_sae_confirm(wpa_s, 0);
635 if (resp == NULL) {
636 wpas_connection_failed(wpa_s, bss->bssid);
637 return;
638 }
639 params.auth_data = wpabuf_head(resp);
640 params.auth_data_len = wpabuf_len(resp);
641 wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED;
642 }
643 #endif /* CONFIG_SAE */
644
645 old_ssid = wpa_s->current_ssid;
646 wpa_s->current_ssid = ssid;
647 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
648 wpa_supplicant_initiate_eapol(wpa_s);
649
650 #ifdef CONFIG_FILS
651 /* TODO: FILS operations can in some cases be done between different
652 * network_ctx (i.e., same credentials can be used with multiple
653 * networks). */
654 if (params.auth_alg == WPA_AUTH_ALG_OPEN &&
655 wpa_key_mgmt_fils(ssid->key_mgmt)) {
656 const u8 *indic;
657 u16 fils_info;
658 const u8 *realm, *username, *rrk;
659 size_t realm_len, username_len, rrk_len;
660 u16 next_seq_num;
661
662 /*
663 * Check FILS Indication element (FILS Information field) bits
664 * indicating supported authentication algorithms against local
665 * configuration (ssid->fils_dh_group). Try to use FILS
666 * authentication only if the AP supports the combination in the
667 * network profile. */
668 indic = wpa_bss_get_ie(bss, WLAN_EID_FILS_INDICATION);
669 if (!indic || indic[1] < 2) {
670 wpa_printf(MSG_DEBUG, "SME: " MACSTR
671 " does not include FILS Indication element - cannot use FILS authentication with it",
672 MAC2STR(bss->bssid));
673 goto no_fils;
674 }
675
676 fils_info = WPA_GET_LE16(indic + 2);
677 if (ssid->fils_dh_group == 0 && !(fils_info & BIT(9))) {
678 wpa_printf(MSG_DEBUG, "SME: " MACSTR
679 " does not support FILS SK without PFS - cannot use FILS authentication with it",
680 MAC2STR(bss->bssid));
681 goto no_fils;
682 }
683 if (ssid->fils_dh_group != 0 && !(fils_info & BIT(10))) {
684 wpa_printf(MSG_DEBUG, "SME: " MACSTR
685 " does not support FILS SK with PFS - cannot use FILS authentication with it",
686 MAC2STR(bss->bssid));
687 goto no_fils;
688 }
689
690 if (wpa_s->last_con_fail_realm &&
691 eapol_sm_get_erp_info(wpa_s->eapol, &ssid->eap,
692 &username, &username_len,
693 &realm, &realm_len, &next_seq_num,
694 &rrk, &rrk_len) == 0 &&
695 realm && realm_len == wpa_s->last_con_fail_realm_len &&
696 os_memcmp(realm, wpa_s->last_con_fail_realm,
697 realm_len) == 0) {
698 wpa_printf(MSG_DEBUG,
699 "SME: FILS authentication for this realm failed last time - try to regenerate ERP key hierarchy");
700 goto no_fils;
701 }
702
703 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
704 ssid, 0,
705 wpa_bss_get_fils_cache_id(bss),
706 0) == 0)
707 wpa_printf(MSG_DEBUG,
708 "SME: Try to use FILS with PMKSA caching");
709 resp = fils_build_auth(wpa_s->wpa, ssid->fils_dh_group, md);
710 if (resp) {
711 int auth_alg;
712
713 if (ssid->fils_dh_group)
714 wpa_printf(MSG_DEBUG,
715 "SME: Try to use FILS SK authentication with PFS (DH Group %u)",
716 ssid->fils_dh_group);
717 else
718 wpa_printf(MSG_DEBUG,
719 "SME: Try to use FILS SK authentication without PFS");
720 auth_alg = ssid->fils_dh_group ?
721 WPA_AUTH_ALG_FILS_SK_PFS : WPA_AUTH_ALG_FILS;
722 params.auth_alg = auth_alg;
723 params.auth_data = wpabuf_head(resp);
724 params.auth_data_len = wpabuf_len(resp);
725 wpa_s->sme.auth_alg = auth_alg;
726 }
727 }
728 no_fils:
729 #endif /* CONFIG_FILS */
730
731 wpa_supplicant_cancel_sched_scan(wpa_s);
732 wpa_supplicant_cancel_scan(wpa_s);
733
734 wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
735 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
736 wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
737
738 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
739 wpa_clear_keys(wpa_s, bss->bssid);
740 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
741 if (old_ssid != wpa_s->current_ssid)
742 wpas_notify_network_changed(wpa_s);
743
744 #ifdef CONFIG_HS20
745 hs20_configure_frame_filters(wpa_s);
746 #endif /* CONFIG_HS20 */
747
748 #ifdef CONFIG_P2P
749 /*
750 * If multi-channel concurrency is not supported, check for any
751 * frequency conflict. In case of any frequency conflict, remove the
752 * least prioritized connection.
753 */
754 if (wpa_s->num_multichan_concurrent < 2) {
755 int freq, num;
756 num = get_shared_radio_freqs(wpa_s, &freq, 1);
757 if (num > 0 && freq > 0 && freq != params.freq) {
758 wpa_printf(MSG_DEBUG,
759 "Conflicting frequency found (%d != %d)",
760 freq, params.freq);
761 if (wpas_p2p_handle_frequency_conflicts(wpa_s,
762 params.freq,
763 ssid) < 0) {
764 wpas_connection_failed(wpa_s, bss->bssid);
765 wpa_supplicant_mark_disassoc(wpa_s);
766 wpabuf_free(resp);
767 wpas_connect_work_done(wpa_s);
768 return;
769 }
770 }
771 }
772 #endif /* CONFIG_P2P */
773
774 if (skip_auth) {
775 wpa_msg(wpa_s, MSG_DEBUG,
776 "SME: Skip authentication step on reassoc-to-same-BSS");
777 wpabuf_free(resp);
778 sme_associate(wpa_s, ssid->mode, bss->bssid, WLAN_AUTH_OPEN);
779 return;
780 }
781
782
783 wpa_s->sme.auth_alg = params.auth_alg;
784 if (wpa_drv_authenticate(wpa_s, &params) < 0) {
785 wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
786 "driver failed");
787 wpas_connection_failed(wpa_s, bss->bssid);
788 wpa_supplicant_mark_disassoc(wpa_s);
789 wpabuf_free(resp);
790 wpas_connect_work_done(wpa_s);
791 return;
792 }
793
794 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
795 NULL);
796
797 /*
798 * Association will be started based on the authentication event from
799 * the driver.
800 */
801
802 wpabuf_free(resp);
803 }
804
805
806 static void sme_auth_start_cb(struct wpa_radio_work *work, int deinit)
807 {
808 struct wpa_connect_work *cwork = work->ctx;
809 struct wpa_supplicant *wpa_s = work->wpa_s;
810
811 if (deinit) {
812 if (work->started)
813 wpa_s->connect_work = NULL;
814
815 wpas_connect_work_free(cwork);
816 return;
817 }
818
819 wpa_s->connect_work = work;
820
821 if (cwork->bss_removed ||
822 !wpas_valid_bss_ssid(wpa_s, cwork->bss, cwork->ssid) ||
823 wpas_network_disabled(wpa_s, cwork->ssid)) {
824 wpa_dbg(wpa_s, MSG_DEBUG, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt");
825 wpas_connect_work_done(wpa_s);
826 return;
827 }
828
829 /* Starting new connection, so clear the possibly used WPA IE from the
830 * previous association. */
831 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
832
833 sme_send_authentication(wpa_s, cwork->bss, cwork->ssid, 1);
834 }
835
836
837 void sme_authenticate(struct wpa_supplicant *wpa_s,
838 struct wpa_bss *bss, struct wpa_ssid *ssid)
839 {
840 struct wpa_connect_work *cwork;
841
842 if (bss == NULL || ssid == NULL)
843 return;
844 if (wpa_s->connect_work) {
845 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reject sme_authenticate() call since connect_work exist");
846 return;
847 }
848
849 if (radio_work_pending(wpa_s, "sme-connect")) {
850 /*
851 * The previous sme-connect work might no longer be valid due to
852 * the fact that the BSS list was updated. In addition, it makes
853 * sense to adhere to the 'newer' decision.
854 */
855 wpa_dbg(wpa_s, MSG_DEBUG,
856 "SME: Remove previous pending sme-connect");
857 radio_remove_works(wpa_s, "sme-connect", 0);
858 }
859
860 wpas_abort_ongoing_scan(wpa_s);
861
862 cwork = os_zalloc(sizeof(*cwork));
863 if (cwork == NULL)
864 return;
865 cwork->bss = bss;
866 cwork->ssid = ssid;
867 cwork->sme = 1;
868
869 #ifdef CONFIG_SAE
870 wpa_s->sme.sae.state = SAE_NOTHING;
871 wpa_s->sme.sae.send_confirm = 0;
872 wpa_s->sme.sae_group_index = 0;
873 #endif /* CONFIG_SAE */
874
875 if (radio_add_work(wpa_s, bss->freq, "sme-connect", 1,
876 sme_auth_start_cb, cwork) < 0)
877 wpas_connect_work_free(cwork);
878 }
879
880
881 #ifdef CONFIG_SAE
882
883 static int sme_external_auth_build_buf(struct wpabuf *buf,
884 struct wpabuf *params,
885 const u8 *sa, const u8 *da,
886 u16 auth_transaction, u16 seq_num)
887 {
888 struct ieee80211_mgmt *resp;
889
890 resp = wpabuf_put(buf, offsetof(struct ieee80211_mgmt,
891 u.auth.variable));
892
893 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
894 (WLAN_FC_STYPE_AUTH << 4));
895 os_memcpy(resp->da, da, ETH_ALEN);
896 os_memcpy(resp->sa, sa, ETH_ALEN);
897 os_memcpy(resp->bssid, da, ETH_ALEN);
898 resp->u.auth.auth_alg = host_to_le16(WLAN_AUTH_SAE);
899 resp->seq_ctrl = host_to_le16(seq_num << 4);
900 resp->u.auth.auth_transaction = host_to_le16(auth_transaction);
901 resp->u.auth.status_code = host_to_le16(WLAN_STATUS_SUCCESS);
902 if (params)
903 wpabuf_put_buf(buf, params);
904
905 return 0;
906 }
907
908
909 static void sme_external_auth_send_sae_commit(struct wpa_supplicant *wpa_s,
910 const u8 *bssid,
911 struct wpa_ssid *ssid)
912 {
913 struct wpabuf *resp, *buf;
914
915 resp = sme_auth_build_sae_commit(wpa_s, ssid, bssid, 1);
916 if (!resp)
917 return;
918
919 wpa_s->sme.sae.state = SAE_COMMITTED;
920 buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + wpabuf_len(resp));
921 if (!buf) {
922 wpabuf_free(resp);
923 return;
924 }
925
926 wpa_s->sme.seq_num++;
927 sme_external_auth_build_buf(buf, resp, wpa_s->own_addr,
928 bssid, 1, wpa_s->sme.seq_num);
929 wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 0);
930 wpabuf_free(resp);
931 wpabuf_free(buf);
932 }
933
934
935 static void sme_send_external_auth_status(struct wpa_supplicant *wpa_s,
936 u16 status)
937 {
938 struct external_auth params;
939
940 os_memset(&params, 0, sizeof(params));
941 params.status = status;
942 os_memcpy(params.ssid, wpa_s->sme.ext_auth.ssid,
943 wpa_s->sme.ext_auth.ssid_len);
944 params.ssid_len = wpa_s->sme.ext_auth.ssid_len;
945 os_memcpy(params.bssid, wpa_s->sme.ext_auth.bssid, ETH_ALEN);
946 wpa_drv_send_external_auth_status(wpa_s, &params);
947 }
948
949
950 static void sme_handle_external_auth_start(struct wpa_supplicant *wpa_s,
951 union wpa_event_data *data)
952 {
953 struct wpa_ssid *ssid;
954 size_t ssid_str_len = data->external_auth.ssid_len;
955 u8 *ssid_str = data->external_auth.ssid;
956
957 /* Get the SSID conf from the ssid string obtained */
958 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
959 if (!wpas_network_disabled(wpa_s, ssid) &&
960 ssid_str_len == ssid->ssid_len &&
961 os_memcmp(ssid_str, ssid->ssid, ssid_str_len) == 0 &&
962 (ssid->key_mgmt & WPA_KEY_MGMT_SAE))
963 break;
964 }
965 if (ssid)
966 sme_external_auth_send_sae_commit(wpa_s,
967 data->external_auth.bssid,
968 ssid);
969 else
970 sme_send_external_auth_status(wpa_s,
971 WLAN_STATUS_UNSPECIFIED_FAILURE);
972 }
973
974
975 static void sme_external_auth_send_sae_confirm(struct wpa_supplicant *wpa_s,
976 const u8 *da)
977 {
978 struct wpabuf *resp, *buf;
979
980 resp = sme_auth_build_sae_confirm(wpa_s, 1);
981 if (!resp) {
982 wpa_printf(MSG_DEBUG, "SAE: Confirm message buf alloc failure");
983 return;
984 }
985
986 wpa_s->sme.sae.state = SAE_CONFIRMED;
987 buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN + wpabuf_len(resp));
988 if (!buf) {
989 wpa_printf(MSG_DEBUG, "SAE: Auth Confirm buf alloc failure");
990 wpabuf_free(resp);
991 return;
992 }
993 wpa_s->sme.seq_num++;
994 sme_external_auth_build_buf(buf, resp, wpa_s->own_addr,
995 da, 2, wpa_s->sme.seq_num);
996 wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 0);
997 wpabuf_free(resp);
998 wpabuf_free(buf);
999 }
1000
1001
1002 void sme_external_auth_trigger(struct wpa_supplicant *wpa_s,
1003 union wpa_event_data *data)
1004 {
1005 if (RSN_SELECTOR_GET(&data->external_auth.key_mgmt_suite) !=
1006 RSN_AUTH_KEY_MGMT_SAE)
1007 return;
1008
1009 if (data->external_auth.action == EXT_AUTH_START) {
1010 os_memcpy(&wpa_s->sme.ext_auth, data,
1011 sizeof(struct external_auth));
1012 wpa_s->sme.seq_num = 0;
1013 wpa_s->sme.sae.state = SAE_NOTHING;
1014 wpa_s->sme.sae.send_confirm = 0;
1015 wpa_s->sme.sae_group_index = 0;
1016 sme_handle_external_auth_start(wpa_s, data);
1017 } else if (data->external_auth.action == EXT_AUTH_ABORT) {
1018 /* Report failure to driver for the wrong trigger */
1019 sme_send_external_auth_status(wpa_s,
1020 WLAN_STATUS_UNSPECIFIED_FAILURE);
1021 }
1022 }
1023
1024
1025 static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
1026 u16 status_code, const u8 *data, size_t len,
1027 int external, const u8 *sa)
1028 {
1029 int *groups;
1030
1031 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
1032 "status code %u", auth_transaction, status_code);
1033
1034 if (auth_transaction == 1 &&
1035 status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
1036 wpa_s->sme.sae.state == SAE_COMMITTED &&
1037 (external || wpa_s->current_bss) && wpa_s->current_ssid) {
1038 int default_groups[] = { 19, 20, 21, 25, 26, 0 };
1039 u16 group;
1040
1041 groups = wpa_s->conf->sae_groups;
1042 if (!groups || groups[0] <= 0)
1043 groups = default_groups;
1044
1045 if (len < sizeof(le16)) {
1046 wpa_dbg(wpa_s, MSG_DEBUG,
1047 "SME: Too short SAE anti-clogging token request");
1048 return -1;
1049 }
1050 group = WPA_GET_LE16(data);
1051 wpa_dbg(wpa_s, MSG_DEBUG,
1052 "SME: SAE anti-clogging token requested (group %u)",
1053 group);
1054 if (sae_group_allowed(&wpa_s->sme.sae, groups, group) !=
1055 WLAN_STATUS_SUCCESS) {
1056 wpa_dbg(wpa_s, MSG_ERROR,
1057 "SME: SAE group %u of anti-clogging request is invalid",
1058 group);
1059 return -1;
1060 }
1061 wpabuf_free(wpa_s->sme.sae_token);
1062 wpa_s->sme.sae_token = wpabuf_alloc_copy(data + sizeof(le16),
1063 len - sizeof(le16));
1064 if (!external)
1065 sme_send_authentication(wpa_s, wpa_s->current_bss,
1066 wpa_s->current_ssid, 1);
1067 else
1068 sme_external_auth_send_sae_commit(
1069 wpa_s, wpa_s->sme.ext_auth.bssid,
1070 wpa_s->current_ssid);
1071 return 0;
1072 }
1073
1074 if (auth_transaction == 1 &&
1075 status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
1076 wpa_s->sme.sae.state == SAE_COMMITTED &&
1077 (external || wpa_s->current_bss) && wpa_s->current_ssid) {
1078 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
1079 wpa_s->sme.sae_group_index++;
1080 if (sme_set_sae_group(wpa_s) < 0)
1081 return -1; /* no other groups enabled */
1082 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
1083 if (!external)
1084 sme_send_authentication(wpa_s, wpa_s->current_bss,
1085 wpa_s->current_ssid, 1);
1086 else
1087 sme_external_auth_send_sae_commit(
1088 wpa_s, wpa_s->sme.ext_auth.bssid,
1089 wpa_s->current_ssid);
1090 return 0;
1091 }
1092
1093 if (auth_transaction == 1 &&
1094 status_code == WLAN_STATUS_UNKNOWN_PASSWORD_IDENTIFIER) {
1095 const u8 *bssid = sa ? sa : wpa_s->pending_bssid;
1096
1097 wpa_msg(wpa_s, MSG_INFO,
1098 WPA_EVENT_SAE_UNKNOWN_PASSWORD_IDENTIFIER MACSTR,
1099 MAC2STR(bssid));
1100 return -1;
1101 }
1102
1103 if (status_code != WLAN_STATUS_SUCCESS)
1104 return -1;
1105
1106 if (auth_transaction == 1) {
1107 u16 res;
1108
1109 groups = wpa_s->conf->sae_groups;
1110
1111 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
1112 if ((!external && wpa_s->current_bss == NULL) ||
1113 wpa_s->current_ssid == NULL)
1114 return -1;
1115 if (wpa_s->sme.sae.state != SAE_COMMITTED)
1116 return -1;
1117 if (groups && groups[0] <= 0)
1118 groups = NULL;
1119 res = sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
1120 groups);
1121 if (res == SAE_SILENTLY_DISCARD) {
1122 wpa_printf(MSG_DEBUG,
1123 "SAE: Drop commit message due to reflection attack");
1124 return 0;
1125 }
1126 if (res != WLAN_STATUS_SUCCESS)
1127 return -1;
1128
1129 if (sae_process_commit(&wpa_s->sme.sae) < 0) {
1130 wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
1131 "commit");
1132 return -1;
1133 }
1134
1135 wpabuf_free(wpa_s->sme.sae_token);
1136 wpa_s->sme.sae_token = NULL;
1137 if (!external)
1138 sme_send_authentication(wpa_s, wpa_s->current_bss,
1139 wpa_s->current_ssid, 0);
1140 else
1141 sme_external_auth_send_sae_confirm(wpa_s, sa);
1142 return 0;
1143 } else if (auth_transaction == 2) {
1144 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
1145 if (wpa_s->sme.sae.state != SAE_CONFIRMED)
1146 return -1;
1147 if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
1148 return -1;
1149 wpa_s->sme.sae.state = SAE_ACCEPTED;
1150 sae_clear_temp_data(&wpa_s->sme.sae);
1151
1152 if (external) {
1153 /* Report success to driver */
1154 sme_send_external_auth_status(wpa_s,
1155 WLAN_STATUS_SUCCESS);
1156 }
1157
1158 return 1;
1159 }
1160
1161 return -1;
1162 }
1163
1164
1165 void sme_external_auth_mgmt_rx(struct wpa_supplicant *wpa_s,
1166 const u8 *auth_frame, size_t len)
1167 {
1168 const struct ieee80211_mgmt *header;
1169 size_t auth_length;
1170
1171 header = (const struct ieee80211_mgmt *) auth_frame;
1172 auth_length = IEEE80211_HDRLEN + sizeof(header->u.auth);
1173
1174 if (len < auth_length) {
1175 /* Notify failure to the driver */
1176 sme_send_external_auth_status(wpa_s,
1177 WLAN_STATUS_UNSPECIFIED_FAILURE);
1178 return;
1179 }
1180
1181 if (le_to_host16(header->u.auth.auth_alg) == WLAN_AUTH_SAE) {
1182 int res;
1183
1184 res = sme_sae_auth(
1185 wpa_s, le_to_host16(header->u.auth.auth_transaction),
1186 le_to_host16(header->u.auth.status_code),
1187 header->u.auth.variable,
1188 len - auth_length, 1, header->sa);
1189 if (res < 0) {
1190 /* Notify failure to the driver */
1191 sme_send_external_auth_status(
1192 wpa_s, WLAN_STATUS_UNSPECIFIED_FAILURE);
1193 return;
1194 }
1195 if (res != 1)
1196 return;
1197
1198 wpa_printf(MSG_DEBUG,
1199 "SME: SAE completed - setting PMK for 4-way handshake");
1200 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN,
1201 wpa_s->sme.sae.pmkid, wpa_s->pending_bssid);
1202 }
1203 }
1204
1205 #endif /* CONFIG_SAE */
1206
1207
1208 void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
1209 {
1210 struct wpa_ssid *ssid = wpa_s->current_ssid;
1211
1212 if (ssid == NULL) {
1213 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
1214 "when network is not selected");
1215 return;
1216 }
1217
1218 if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
1219 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
1220 "when not in authenticating state");
1221 return;
1222 }
1223
1224 if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
1225 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
1226 "unexpected peer " MACSTR,
1227 MAC2STR(data->auth.peer));
1228 return;
1229 }
1230
1231 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
1232 " auth_type=%d auth_transaction=%d status_code=%d",
1233 MAC2STR(data->auth.peer), data->auth.auth_type,
1234 data->auth.auth_transaction, data->auth.status_code);
1235 wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
1236 data->auth.ies, data->auth.ies_len);
1237
1238 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1239
1240 #ifdef CONFIG_SAE
1241 if (data->auth.auth_type == WLAN_AUTH_SAE) {
1242 int res;
1243 res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
1244 data->auth.status_code, data->auth.ies,
1245 data->auth.ies_len, 0, NULL);
1246 if (res < 0) {
1247 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1248 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1249
1250 }
1251 if (res != 1)
1252 return;
1253
1254 wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for "
1255 "4-way handshake");
1256 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN,
1257 wpa_s->sme.sae.pmkid, wpa_s->pending_bssid);
1258 }
1259 #endif /* CONFIG_SAE */
1260
1261 if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
1262 char *ie_txt = NULL;
1263
1264 if (data->auth.ies && data->auth.ies_len) {
1265 size_t buflen = 2 * data->auth.ies_len + 1;
1266 ie_txt = os_malloc(buflen);
1267 if (ie_txt) {
1268 wpa_snprintf_hex(ie_txt, buflen, data->auth.ies,
1269 data->auth.ies_len);
1270 }
1271 }
1272 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AUTH_REJECT MACSTR
1273 " auth_type=%u auth_transaction=%u status_code=%u%s%s",
1274 MAC2STR(data->auth.peer), data->auth.auth_type,
1275 data->auth.auth_transaction, data->auth.status_code,
1276 ie_txt ? " ie=" : "",
1277 ie_txt ? ie_txt : "");
1278 os_free(ie_txt);
1279
1280 #ifdef CONFIG_FILS
1281 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FILS ||
1282 wpa_s->sme.auth_alg == WPA_AUTH_ALG_FILS_SK_PFS)
1283 fils_connection_failure(wpa_s);
1284 #endif /* CONFIG_FILS */
1285
1286 if (data->auth.status_code !=
1287 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
1288 wpa_s->sme.auth_alg == data->auth.auth_type ||
1289 wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
1290 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1291 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1292 return;
1293 }
1294
1295 wpas_connect_work_done(wpa_s);
1296
1297 switch (data->auth.auth_type) {
1298 case WLAN_AUTH_OPEN:
1299 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
1300
1301 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
1302 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
1303 wpa_s->current_ssid);
1304 return;
1305
1306 case WLAN_AUTH_SHARED_KEY:
1307 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
1308
1309 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
1310 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
1311 wpa_s->current_ssid);
1312 return;
1313
1314 default:
1315 return;
1316 }
1317 }
1318
1319 #ifdef CONFIG_IEEE80211R
1320 if (data->auth.auth_type == WLAN_AUTH_FT) {
1321 const u8 *ric_ies = NULL;
1322 size_t ric_ies_len = 0;
1323
1324 if (wpa_s->ric_ies) {
1325 ric_ies = wpabuf_head(wpa_s->ric_ies);
1326 ric_ies_len = wpabuf_len(wpa_s->ric_ies);
1327 }
1328 if (wpa_ft_process_response(wpa_s->wpa, data->auth.ies,
1329 data->auth.ies_len, 0,
1330 data->auth.peer,
1331 ric_ies, ric_ies_len) < 0) {
1332 wpa_dbg(wpa_s, MSG_DEBUG,
1333 "SME: FT Authentication response processing failed");
1334 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
1335 MACSTR
1336 " reason=%d locally_generated=1",
1337 MAC2STR(wpa_s->pending_bssid),
1338 WLAN_REASON_DEAUTH_LEAVING);
1339 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1340 wpa_supplicant_mark_disassoc(wpa_s);
1341 return;
1342 }
1343 }
1344 #endif /* CONFIG_IEEE80211R */
1345
1346 #ifdef CONFIG_FILS
1347 if (data->auth.auth_type == WLAN_AUTH_FILS_SK ||
1348 data->auth.auth_type == WLAN_AUTH_FILS_SK_PFS) {
1349 u16 expect_auth_type;
1350
1351 expect_auth_type = wpa_s->sme.auth_alg ==
1352 WPA_AUTH_ALG_FILS_SK_PFS ? WLAN_AUTH_FILS_SK_PFS :
1353 WLAN_AUTH_FILS_SK;
1354 if (data->auth.auth_type != expect_auth_type) {
1355 wpa_dbg(wpa_s, MSG_DEBUG,
1356 "SME: FILS Authentication response used different auth alg (%u; expected %u)",
1357 data->auth.auth_type, expect_auth_type);
1358 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
1359 MACSTR
1360 " reason=%d locally_generated=1",
1361 MAC2STR(wpa_s->pending_bssid),
1362 WLAN_REASON_DEAUTH_LEAVING);
1363 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1364 wpa_supplicant_mark_disassoc(wpa_s);
1365 return;
1366 }
1367
1368 if (fils_process_auth(wpa_s->wpa, wpa_s->pending_bssid,
1369 data->auth.ies, data->auth.ies_len) < 0) {
1370 wpa_dbg(wpa_s, MSG_DEBUG,
1371 "SME: FILS Authentication response processing failed");
1372 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
1373 MACSTR
1374 " reason=%d locally_generated=1",
1375 MAC2STR(wpa_s->pending_bssid),
1376 WLAN_REASON_DEAUTH_LEAVING);
1377 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1378 wpa_supplicant_mark_disassoc(wpa_s);
1379 return;
1380 }
1381 }
1382 #endif /* CONFIG_FILS */
1383
1384 sme_associate(wpa_s, ssid->mode, data->auth.peer,
1385 data->auth.auth_type);
1386 }
1387
1388
1389 #ifdef CONFIG_IEEE80211R
1390 static void remove_ie(u8 *buf, size_t *len, u8 eid)
1391 {
1392 u8 *pos, *next, *end;
1393
1394 pos = (u8 *) get_ie(buf, *len, eid);
1395 if (pos) {
1396 next = pos + 2 + pos[1];
1397 end = buf + *len;
1398 *len -= 2 + pos[1];
1399 os_memmove(pos, next, end - next);
1400 }
1401 }
1402 #endif /* CONFIG_IEEE80211R */
1403
1404
1405 void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
1406 const u8 *bssid, u16 auth_type)
1407 {
1408 struct wpa_driver_associate_params params;
1409 struct ieee802_11_elems elems;
1410 #ifdef CONFIG_FILS
1411 u8 nonces[2 * FILS_NONCE_LEN];
1412 #endif /* CONFIG_FILS */
1413 #ifdef CONFIG_HT_OVERRIDES
1414 struct ieee80211_ht_capabilities htcaps;
1415 struct ieee80211_ht_capabilities htcaps_mask;
1416 #endif /* CONFIG_HT_OVERRIDES */
1417 #ifdef CONFIG_VHT_OVERRIDES
1418 struct ieee80211_vht_capabilities vhtcaps;
1419 struct ieee80211_vht_capabilities vhtcaps_mask;
1420 #endif /* CONFIG_VHT_OVERRIDES */
1421
1422 os_memset(&params, 0, sizeof(params));
1423
1424 #ifdef CONFIG_FILS
1425 if (auth_type == WLAN_AUTH_FILS_SK ||
1426 auth_type == WLAN_AUTH_FILS_SK_PFS) {
1427 struct wpabuf *buf;
1428 const u8 *snonce, *anonce;
1429 const unsigned int max_hlp = 20;
1430 struct wpabuf *hlp[max_hlp];
1431 unsigned int i, num_hlp = 0;
1432 struct fils_hlp_req *req;
1433
1434 dl_list_for_each(req, &wpa_s->fils_hlp_req, struct fils_hlp_req,
1435 list) {
1436 hlp[num_hlp] = wpabuf_alloc(2 * ETH_ALEN + 6 +
1437 wpabuf_len(req->pkt));
1438 if (!hlp[num_hlp])
1439 break;
1440 wpabuf_put_data(hlp[num_hlp], req->dst, ETH_ALEN);
1441 wpabuf_put_data(hlp[num_hlp], wpa_s->own_addr,
1442 ETH_ALEN);
1443 wpabuf_put_data(hlp[num_hlp],
1444 "\xaa\xaa\x03\x00\x00\x00", 6);
1445 wpabuf_put_buf(hlp[num_hlp], req->pkt);
1446 num_hlp++;
1447 if (num_hlp >= max_hlp)
1448 break;
1449 }
1450
1451 buf = fils_build_assoc_req(wpa_s->wpa, &params.fils_kek,
1452 &params.fils_kek_len, &snonce,
1453 &anonce,
1454 (const struct wpabuf **) hlp,
1455 num_hlp);
1456 for (i = 0; i < num_hlp; i++)
1457 wpabuf_free(hlp[i]);
1458 if (!buf)
1459 return;
1460 wpa_hexdump(MSG_DEBUG, "FILS: assoc_req before FILS elements",
1461 wpa_s->sme.assoc_req_ie,
1462 wpa_s->sme.assoc_req_ie_len);
1463 #ifdef CONFIG_IEEE80211R
1464 if (wpa_key_mgmt_ft(wpa_s->key_mgmt)) {
1465 /* Remove RSNE and MDE to allow them to be overridden
1466 * with FILS+FT specific values from
1467 * fils_build_assoc_req(). */
1468 remove_ie(wpa_s->sme.assoc_req_ie,
1469 &wpa_s->sme.assoc_req_ie_len,
1470 WLAN_EID_RSN);
1471 wpa_hexdump(MSG_DEBUG,
1472 "FILS: assoc_req after RSNE removal",
1473 wpa_s->sme.assoc_req_ie,
1474 wpa_s->sme.assoc_req_ie_len);
1475 remove_ie(wpa_s->sme.assoc_req_ie,
1476 &wpa_s->sme.assoc_req_ie_len,
1477 WLAN_EID_MOBILITY_DOMAIN);
1478 wpa_hexdump(MSG_DEBUG,
1479 "FILS: assoc_req after MDE removal",
1480 wpa_s->sme.assoc_req_ie,
1481 wpa_s->sme.assoc_req_ie_len);
1482 }
1483 #endif /* CONFIG_IEEE80211R */
1484 /* TODO: Make wpa_s->sme.assoc_req_ie use dynamic allocation */
1485 if (wpa_s->sme.assoc_req_ie_len + wpabuf_len(buf) >
1486 sizeof(wpa_s->sme.assoc_req_ie)) {
1487 wpa_printf(MSG_ERROR,
1488 "FILS: Not enough buffer room for own AssocReq elements");
1489 wpabuf_free(buf);
1490 return;
1491 }
1492 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1493 wpabuf_head(buf), wpabuf_len(buf));
1494 wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf);
1495 wpabuf_free(buf);
1496 wpa_hexdump(MSG_DEBUG, "FILS: assoc_req after FILS elements",
1497 wpa_s->sme.assoc_req_ie,
1498 wpa_s->sme.assoc_req_ie_len);
1499
1500 os_memcpy(nonces, snonce, FILS_NONCE_LEN);
1501 os_memcpy(nonces + FILS_NONCE_LEN, anonce, FILS_NONCE_LEN);
1502 params.fils_nonces = nonces;
1503 params.fils_nonces_len = sizeof(nonces);
1504 }
1505 #endif /* CONFIG_FILS */
1506
1507 #ifdef CONFIG_OWE
1508 #ifdef CONFIG_TESTING_OPTIONS
1509 if (get_ie_ext(wpa_s->sme.assoc_req_ie, wpa_s->sme.assoc_req_ie_len,
1510 WLAN_EID_EXT_OWE_DH_PARAM)) {
1511 wpa_printf(MSG_INFO, "TESTING: Override OWE DH element");
1512 } else
1513 #endif /* CONFIG_TESTING_OPTIONS */
1514 if (auth_type == WLAN_AUTH_OPEN &&
1515 wpa_s->key_mgmt == WPA_KEY_MGMT_OWE) {
1516 struct wpabuf *owe_ie;
1517 u16 group;
1518
1519 if (wpa_s->current_ssid && wpa_s->current_ssid->owe_group) {
1520 group = wpa_s->current_ssid->owe_group;
1521 } else if (wpa_s->assoc_status_code ==
1522 WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED) {
1523 if (wpa_s->last_owe_group == 19)
1524 group = 20;
1525 else if (wpa_s->last_owe_group == 20)
1526 group = 21;
1527 else
1528 group = OWE_DH_GROUP;
1529 } else {
1530 group = OWE_DH_GROUP;
1531 }
1532
1533 wpa_s->last_owe_group = group;
1534 wpa_printf(MSG_DEBUG, "OWE: Try to use group %u", group);
1535 owe_ie = owe_build_assoc_req(wpa_s->wpa, group);
1536 if (!owe_ie) {
1537 wpa_printf(MSG_ERROR,
1538 "OWE: Failed to build IE for Association Request frame");
1539 return;
1540 }
1541 if (wpa_s->sme.assoc_req_ie_len + wpabuf_len(owe_ie) >
1542 sizeof(wpa_s->sme.assoc_req_ie)) {
1543 wpa_printf(MSG_ERROR,
1544 "OWE: Not enough buffer room for own Association Request frame elements");
1545 wpabuf_free(owe_ie);
1546 return;
1547 }
1548 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1549 wpabuf_head(owe_ie), wpabuf_len(owe_ie));
1550 wpa_s->sme.assoc_req_ie_len += wpabuf_len(owe_ie);
1551 wpabuf_free(owe_ie);
1552 }
1553 #endif /* CONFIG_OWE */
1554
1555 params.bssid = bssid;
1556 params.ssid = wpa_s->sme.ssid;
1557 params.ssid_len = wpa_s->sme.ssid_len;
1558 params.freq.freq = wpa_s->sme.freq;
1559 params.bg_scan_period = wpa_s->current_ssid ?
1560 wpa_s->current_ssid->bg_scan_period : -1;
1561 params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
1562 wpa_s->sme.assoc_req_ie : NULL;
1563 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
1564 wpa_hexdump(MSG_DEBUG, "SME: Association Request IEs",
1565 params.wpa_ie, params.wpa_ie_len);
1566 params.pairwise_suite = wpa_s->pairwise_cipher;
1567 params.group_suite = wpa_s->group_cipher;
1568 params.mgmt_group_suite = wpa_s->mgmt_group_cipher;
1569 params.key_mgmt_suite = wpa_s->key_mgmt;
1570 params.wpa_proto = wpa_s->wpa_proto;
1571 #ifdef CONFIG_HT_OVERRIDES
1572 os_memset(&htcaps, 0, sizeof(htcaps));
1573 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
1574 params.htcaps = (u8 *) &htcaps;
1575 params.htcaps_mask = (u8 *) &htcaps_mask;
1576 wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, &params);
1577 #endif /* CONFIG_HT_OVERRIDES */
1578 #ifdef CONFIG_VHT_OVERRIDES
1579 os_memset(&vhtcaps, 0, sizeof(vhtcaps));
1580 os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
1581 params.vhtcaps = &vhtcaps;
1582 params.vhtcaps_mask = &vhtcaps_mask;
1583 wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, &params);
1584 #endif /* CONFIG_VHT_OVERRIDES */
1585 #ifdef CONFIG_IEEE80211R
1586 if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies &&
1587 get_ie(wpa_s->sme.ft_ies, wpa_s->sme.ft_ies_len,
1588 WLAN_EID_RIC_DATA)) {
1589 /* There seems to be a pretty inconvenient bug in the Linux
1590 * kernel IE splitting functionality when RIC is used. For now,
1591 * skip correct behavior in IE construction here (i.e., drop the
1592 * additional non-FT-specific IEs) to avoid kernel issues. This
1593 * is fine since RIC is used only for testing purposes in the
1594 * current implementation. */
1595 wpa_printf(MSG_INFO,
1596 "SME: Linux kernel workaround - do not try to include additional IEs with RIC");
1597 params.wpa_ie = wpa_s->sme.ft_ies;
1598 params.wpa_ie_len = wpa_s->sme.ft_ies_len;
1599 } else if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
1600 const u8 *rm_en, *pos, *end;
1601 size_t rm_en_len = 0;
1602 u8 *rm_en_dup = NULL, *wpos;
1603
1604 /* Remove RSNE, MDE, FTE to allow them to be overridden with
1605 * FT specific values */
1606 remove_ie(wpa_s->sme.assoc_req_ie,
1607 &wpa_s->sme.assoc_req_ie_len,
1608 WLAN_EID_RSN);
1609 remove_ie(wpa_s->sme.assoc_req_ie,
1610 &wpa_s->sme.assoc_req_ie_len,
1611 WLAN_EID_MOBILITY_DOMAIN);
1612 remove_ie(wpa_s->sme.assoc_req_ie,
1613 &wpa_s->sme.assoc_req_ie_len,
1614 WLAN_EID_FAST_BSS_TRANSITION);
1615 rm_en = get_ie(wpa_s->sme.assoc_req_ie,
1616 wpa_s->sme.assoc_req_ie_len,
1617 WLAN_EID_RRM_ENABLED_CAPABILITIES);
1618 if (rm_en) {
1619 /* Need to remove RM Enabled Capabilities element as
1620 * well temporarily, so that it can be placed between
1621 * RSNE and MDE. */
1622 rm_en_len = 2 + rm_en[1];
1623 rm_en_dup = os_memdup(rm_en, rm_en_len);
1624 remove_ie(wpa_s->sme.assoc_req_ie,
1625 &wpa_s->sme.assoc_req_ie_len,
1626 WLAN_EID_RRM_ENABLED_CAPABILITIES);
1627 }
1628 wpa_hexdump(MSG_DEBUG,
1629 "SME: Association Request IEs after FT IE removal",
1630 wpa_s->sme.assoc_req_ie,
1631 wpa_s->sme.assoc_req_ie_len);
1632 if (wpa_s->sme.assoc_req_ie_len + wpa_s->sme.ft_ies_len +
1633 rm_en_len > sizeof(wpa_s->sme.assoc_req_ie)) {
1634 wpa_printf(MSG_ERROR,
1635 "SME: Not enough buffer room for FT IEs in Association Request frame");
1636 os_free(rm_en_dup);
1637 return;
1638 }
1639
1640 os_memmove(wpa_s->sme.assoc_req_ie + wpa_s->sme.ft_ies_len +
1641 rm_en_len,
1642 wpa_s->sme.assoc_req_ie,
1643 wpa_s->sme.assoc_req_ie_len);
1644 pos = wpa_s->sme.ft_ies;
1645 end = pos + wpa_s->sme.ft_ies_len;
1646 wpos = wpa_s->sme.assoc_req_ie;
1647 if (*pos == WLAN_EID_RSN) {
1648 os_memcpy(wpos, pos, 2 + pos[1]);
1649 wpos += 2 + pos[1];
1650 pos += 2 + pos[1];
1651 }
1652 if (rm_en_dup) {
1653 os_memcpy(wpos, rm_en_dup, rm_en_len);
1654 wpos += rm_en_len;
1655 os_free(rm_en_dup);
1656 }
1657 os_memcpy(wpos, pos, end - pos);
1658 wpa_s->sme.assoc_req_ie_len += wpa_s->sme.ft_ies_len +
1659 rm_en_len;
1660 params.wpa_ie = wpa_s->sme.assoc_req_ie;
1661 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
1662 wpa_hexdump(MSG_DEBUG,
1663 "SME: Association Request IEs after FT override",
1664 params.wpa_ie, params.wpa_ie_len);
1665 }
1666 #endif /* CONFIG_IEEE80211R */
1667 params.mode = mode;
1668 params.mgmt_frame_protection = wpa_s->sme.mfp;
1669 params.rrm_used = wpa_s->rrm.rrm_used;
1670 if (wpa_s->sme.prev_bssid_set)
1671 params.prev_bssid = wpa_s->sme.prev_bssid;
1672
1673 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
1674 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
1675 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
1676 params.freq.freq);
1677
1678 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
1679
1680 if (params.wpa_ie == NULL ||
1681 ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
1682 < 0) {
1683 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
1684 os_memset(&elems, 0, sizeof(elems));
1685 }
1686 if (elems.rsn_ie) {
1687 params.wpa_proto = WPA_PROTO_RSN;
1688 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
1689 elems.rsn_ie_len + 2);
1690 } else if (elems.wpa_ie) {
1691 params.wpa_proto = WPA_PROTO_WPA;
1692 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
1693 elems.wpa_ie_len + 2);
1694 } else if (elems.osen) {
1695 params.wpa_proto = WPA_PROTO_OSEN;
1696 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2,
1697 elems.osen_len + 2);
1698 } else
1699 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1700 if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
1701 params.p2p = 1;
1702
1703 if (wpa_s->p2pdev->set_sta_uapsd)
1704 params.uapsd = wpa_s->p2pdev->sta_uapsd;
1705 else
1706 params.uapsd = -1;
1707
1708 if (wpa_drv_associate(wpa_s, &params) < 0) {
1709 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
1710 "driver failed");
1711 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1712 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1713 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1714 return;
1715 }
1716
1717 eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
1718 NULL);
1719
1720 #ifdef CONFIG_TESTING_OPTIONS
1721 wpabuf_free(wpa_s->last_assoc_req_wpa_ie);
1722 wpa_s->last_assoc_req_wpa_ie = NULL;
1723 if (params.wpa_ie)
1724 wpa_s->last_assoc_req_wpa_ie =
1725 wpabuf_alloc_copy(params.wpa_ie, params.wpa_ie_len);
1726 #endif /* CONFIG_TESTING_OPTIONS */
1727 }
1728
1729
1730 int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
1731 const u8 *ies, size_t ies_len)
1732 {
1733 if (md == NULL || ies == NULL) {
1734 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
1735 os_free(wpa_s->sme.ft_ies);
1736 wpa_s->sme.ft_ies = NULL;
1737 wpa_s->sme.ft_ies_len = 0;
1738 wpa_s->sme.ft_used = 0;
1739 return 0;
1740 }
1741
1742 os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
1743 wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
1744 os_free(wpa_s->sme.ft_ies);
1745 wpa_s->sme.ft_ies = os_memdup(ies, ies_len);
1746 if (wpa_s->sme.ft_ies == NULL)
1747 return -1;
1748 wpa_s->sme.ft_ies_len = ies_len;
1749 return 0;
1750 }
1751
1752
1753 static void sme_deauth(struct wpa_supplicant *wpa_s)
1754 {
1755 int bssid_changed;
1756
1757 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
1758
1759 if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
1760 WLAN_REASON_DEAUTH_LEAVING) < 0) {
1761 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
1762 "failed");
1763 }
1764 wpa_s->sme.prev_bssid_set = 0;
1765
1766 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1767 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1768 os_memset(wpa_s->bssid, 0, ETH_ALEN);
1769 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1770 if (bssid_changed)
1771 wpas_notify_bssid_changed(wpa_s);
1772 }
1773
1774
1775 void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
1776 union wpa_event_data *data)
1777 {
1778 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
1779 "status code %d", MAC2STR(wpa_s->pending_bssid),
1780 data->assoc_reject.status_code);
1781
1782 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1783
1784 #ifdef CONFIG_SAE
1785 if (wpa_s->sme.sae_pmksa_caching && wpa_s->current_ssid &&
1786 wpa_key_mgmt_sae(wpa_s->current_ssid->key_mgmt)) {
1787 wpa_dbg(wpa_s, MSG_DEBUG,
1788 "PMKSA caching attempt rejected - drop PMKSA cache entry and fall back to SAE authentication");
1789 wpa_sm_aborted_cached(wpa_s->wpa);
1790 wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid);
1791 if (wpa_s->current_bss) {
1792 struct wpa_bss *bss = wpa_s->current_bss;
1793 struct wpa_ssid *ssid = wpa_s->current_ssid;
1794
1795 wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
1796 WLAN_REASON_DEAUTH_LEAVING);
1797 wpas_connect_work_done(wpa_s);
1798 wpa_supplicant_mark_disassoc(wpa_s);
1799 wpa_supplicant_connect(wpa_s, bss, ssid);
1800 return;
1801 }
1802 }
1803 #endif /* CONFIG_SAE */
1804
1805 /*
1806 * For now, unconditionally terminate the previous authentication. In
1807 * theory, this should not be needed, but mac80211 gets quite confused
1808 * if the authentication is left pending.. Some roaming cases might
1809 * benefit from using the previous authentication, so this could be
1810 * optimized in the future.
1811 */
1812 sme_deauth(wpa_s);
1813 }
1814
1815
1816 void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
1817 union wpa_event_data *data)
1818 {
1819 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
1820 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1821 wpa_supplicant_mark_disassoc(wpa_s);
1822 }
1823
1824
1825 void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
1826 union wpa_event_data *data)
1827 {
1828 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
1829 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1830 wpa_supplicant_mark_disassoc(wpa_s);
1831 }
1832
1833
1834 void sme_event_disassoc(struct wpa_supplicant *wpa_s,
1835 struct disassoc_info *info)
1836 {
1837 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
1838 if (wpa_s->sme.prev_bssid_set) {
1839 /*
1840 * cfg80211/mac80211 can get into somewhat confused state if
1841 * the AP only disassociates us and leaves us in authenticated
1842 * state. For now, force the state to be cleared to avoid
1843 * confusing errors if we try to associate with the AP again.
1844 */
1845 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
1846 "driver state");
1847 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
1848 WLAN_REASON_DEAUTH_LEAVING);
1849 }
1850 }
1851
1852
1853 static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
1854 {
1855 struct wpa_supplicant *wpa_s = eloop_ctx;
1856 if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
1857 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
1858 sme_deauth(wpa_s);
1859 }
1860 }
1861
1862
1863 static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
1864 {
1865 struct wpa_supplicant *wpa_s = eloop_ctx;
1866 if (wpa_s->wpa_state == WPA_ASSOCIATING) {
1867 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
1868 sme_deauth(wpa_s);
1869 }
1870 }
1871
1872
1873 void sme_state_changed(struct wpa_supplicant *wpa_s)
1874 {
1875 /* Make sure timers are cleaned up appropriately. */
1876 if (wpa_s->wpa_state != WPA_ASSOCIATING)
1877 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1878 if (wpa_s->wpa_state != WPA_AUTHENTICATING)
1879 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1880 }
1881
1882
1883 void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
1884 const u8 *prev_pending_bssid)
1885 {
1886 /*
1887 * mac80211-workaround to force deauth on failed auth cmd,
1888 * requires us to remain in authenticating state to allow the
1889 * second authentication attempt to be continued properly.
1890 */
1891 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
1892 "to proceed after disconnection event");
1893 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
1894 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
1895
1896 /*
1897 * Re-arm authentication timer in case auth fails for whatever reason.
1898 */
1899 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1900 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
1901 NULL);
1902 }
1903
1904
1905 void sme_clear_on_disassoc(struct wpa_supplicant *wpa_s)
1906 {
1907 wpa_s->sme.prev_bssid_set = 0;
1908 #ifdef CONFIG_SAE
1909 wpabuf_free(wpa_s->sme.sae_token);
1910 wpa_s->sme.sae_token = NULL;
1911 sae_clear_data(&wpa_s->sme.sae);
1912 #endif /* CONFIG_SAE */
1913 #ifdef CONFIG_IEEE80211R
1914 if (wpa_s->sme.ft_ies || wpa_s->sme.ft_used)
1915 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
1916 #endif /* CONFIG_IEEE80211R */
1917 }
1918
1919
1920 void sme_deinit(struct wpa_supplicant *wpa_s)
1921 {
1922 os_free(wpa_s->sme.ft_ies);
1923 wpa_s->sme.ft_ies = NULL;
1924 wpa_s->sme.ft_ies_len = 0;
1925 #ifdef CONFIG_IEEE80211W
1926 sme_stop_sa_query(wpa_s);
1927 #endif /* CONFIG_IEEE80211W */
1928 sme_clear_on_disassoc(wpa_s);
1929
1930 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1931 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1932 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1933 }
1934
1935
1936 static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
1937 const u8 *chan_list, u8 num_channels,
1938 u8 num_intol)
1939 {
1940 struct ieee80211_2040_bss_coex_ie *bc_ie;
1941 struct ieee80211_2040_intol_chan_report *ic_report;
1942 struct wpabuf *buf;
1943
1944 wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR
1945 " (num_channels=%u num_intol=%u)",
1946 MAC2STR(wpa_s->bssid), num_channels, num_intol);
1947 wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels",
1948 chan_list, num_channels);
1949
1950 buf = wpabuf_alloc(2 + /* action.category + action_code */
1951 sizeof(struct ieee80211_2040_bss_coex_ie) +
1952 sizeof(struct ieee80211_2040_intol_chan_report) +
1953 num_channels);
1954 if (buf == NULL)
1955 return;
1956
1957 wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
1958 wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
1959
1960 bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
1961 bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
1962 bc_ie->length = 1;
1963 if (num_intol)
1964 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
1965
1966 if (num_channels > 0) {
1967 ic_report = wpabuf_put(buf, sizeof(*ic_report));
1968 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
1969 ic_report->length = num_channels + 1;
1970 ic_report->op_class = 0;
1971 os_memcpy(wpabuf_put(buf, num_channels), chan_list,
1972 num_channels);
1973 }
1974
1975 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
1976 wpa_s->own_addr, wpa_s->bssid,
1977 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
1978 wpa_msg(wpa_s, MSG_INFO,
1979 "SME: Failed to send 20/40 BSS Coexistence frame");
1980 }
1981
1982 wpabuf_free(buf);
1983 }
1984
1985
1986 int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
1987 {
1988 struct wpa_bss *bss;
1989 const u8 *ie;
1990 u16 ht_cap;
1991 u8 chan_list[P2P_MAX_CHANNELS], channel;
1992 u8 num_channels = 0, num_intol = 0, i;
1993
1994 if (!wpa_s->sme.sched_obss_scan)
1995 return 0;
1996
1997 wpa_s->sme.sched_obss_scan = 0;
1998 if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
1999 return 1;
2000
2001 /*
2002 * Check whether AP uses regulatory triplet or channel triplet in
2003 * country info. Right now the operating class of the BSS channel
2004 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
2005 * based on the assumption that operating class triplet is not used in
2006 * beacon frame. If the First Channel Number/Operating Extension
2007 * Identifier octet has a positive integer value of 201 or greater,
2008 * then its operating class triplet.
2009 *
2010 * TODO: If Supported Operating Classes element is present in beacon
2011 * frame, have to lookup operating class in Annex E and fill them in
2012 * 2040 coex frame.
2013 */
2014 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
2015 if (ie && (ie[1] >= 6) && (ie[5] >= 201))
2016 return 1;
2017
2018 os_memset(chan_list, 0, sizeof(chan_list));
2019
2020 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2021 /* Skip other band bss */
2022 enum hostapd_hw_mode mode;
2023 mode = ieee80211_freq_to_chan(bss->freq, &channel);
2024 if (mode != HOSTAPD_MODE_IEEE80211G &&
2025 mode != HOSTAPD_MODE_IEEE80211B)
2026 continue;
2027
2028 ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
2029 ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
2030 wpa_printf(MSG_DEBUG, "SME OBSS scan BSS " MACSTR
2031 " freq=%u chan=%u ht_cap=0x%x",
2032 MAC2STR(bss->bssid), bss->freq, channel, ht_cap);
2033
2034 if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
2035 if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
2036 num_intol++;
2037
2038 /* Check whether the channel is already considered */
2039 for (i = 0; i < num_channels; i++) {
2040 if (channel == chan_list[i])
2041 break;
2042 }
2043 if (i != num_channels)
2044 continue;
2045
2046 chan_list[num_channels++] = channel;
2047 }
2048 }
2049
2050 sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
2051 return 1;
2052 }
2053
2054
2055 static void wpa_obss_scan_freqs_list(struct wpa_supplicant *wpa_s,
2056 struct wpa_driver_scan_params *params)
2057 {
2058 /* Include only affected channels */
2059 struct hostapd_hw_modes *mode;
2060 int count, i;
2061 int start, end;
2062
2063 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
2064 HOSTAPD_MODE_IEEE80211G);
2065 if (mode == NULL) {
2066 /* No channels supported in this band - use empty list */
2067 params->freqs = os_zalloc(sizeof(int));
2068 return;
2069 }
2070
2071 if (wpa_s->sme.ht_sec_chan == HT_SEC_CHAN_UNKNOWN &&
2072 wpa_s->current_bss) {
2073 const u8 *ie;
2074
2075 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_OPERATION);
2076 if (ie && ie[1] >= 2) {
2077 u8 o;
2078
2079 o = ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK;
2080 if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
2081 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_ABOVE;
2082 else if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
2083 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_BELOW;
2084 }
2085 }
2086
2087 start = wpa_s->assoc_freq - 10;
2088 end = wpa_s->assoc_freq + 10;
2089 switch (wpa_s->sme.ht_sec_chan) {
2090 case HT_SEC_CHAN_UNKNOWN:
2091 /* HT40+ possible on channels 1..9 */
2092 if (wpa_s->assoc_freq <= 2452)
2093 start -= 20;
2094 /* HT40- possible on channels 5-13 */
2095 if (wpa_s->assoc_freq >= 2432)
2096 end += 20;
2097 break;
2098 case HT_SEC_CHAN_ABOVE:
2099 end += 20;
2100 break;
2101 case HT_SEC_CHAN_BELOW:
2102 start -= 20;
2103 break;
2104 }
2105 wpa_printf(MSG_DEBUG,
2106 "OBSS: assoc_freq %d possible affected range %d-%d",
2107 wpa_s->assoc_freq, start, end);
2108
2109 params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
2110 if (params->freqs == NULL)
2111 return;
2112 for (count = 0, i = 0; i < mode->num_channels; i++) {
2113 int freq;
2114
2115 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
2116 continue;
2117 freq = mode->channels[i].freq;
2118 if (freq - 10 >= end || freq + 10 <= start)
2119 continue; /* not affected */
2120 params->freqs[count++] = freq;
2121 }
2122 }
2123
2124
2125 static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
2126 {
2127 struct wpa_supplicant *wpa_s = eloop_ctx;
2128 struct wpa_driver_scan_params params;
2129
2130 if (!wpa_s->current_bss) {
2131 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
2132 return;
2133 }
2134
2135 os_memset(&params, 0, sizeof(params));
2136 wpa_obss_scan_freqs_list(wpa_s, &params);
2137 params.low_priority = 1;
2138 wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
2139
2140 if (wpa_supplicant_trigger_scan(wpa_s, &params))
2141 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
2142 else
2143 wpa_s->sme.sched_obss_scan = 1;
2144 os_free(params.freqs);
2145
2146 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
2147 sme_obss_scan_timeout, wpa_s, NULL);
2148 }
2149
2150
2151 void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
2152 {
2153 const u8 *ie;
2154 struct wpa_bss *bss = wpa_s->current_bss;
2155 struct wpa_ssid *ssid = wpa_s->current_ssid;
2156 struct hostapd_hw_modes *hw_mode = NULL;
2157 int i;
2158
2159 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
2160 wpa_s->sme.sched_obss_scan = 0;
2161 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_UNKNOWN;
2162 if (!enable)
2163 return;
2164
2165 /*
2166 * Schedule OBSS scan if driver is using station SME in wpa_supplicant
2167 * or it expects OBSS scan to be performed by wpa_supplicant.
2168 */
2169 if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
2170 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
2171 ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA)
2172 return;
2173
2174 if (!wpa_s->hw.modes)
2175 return;
2176
2177 /* only HT caps in 11g mode are relevant */
2178 for (i = 0; i < wpa_s->hw.num_modes; i++) {
2179 hw_mode = &wpa_s->hw.modes[i];
2180 if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
2181 break;
2182 }
2183
2184 /* Driver does not support HT40 for 11g or doesn't have 11g. */
2185 if (i == wpa_s->hw.num_modes || !hw_mode ||
2186 !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
2187 return;
2188
2189 if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
2190 return; /* Not associated on 2.4 GHz band */
2191
2192 /* Check whether AP supports HT40 */
2193 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
2194 if (!ie || ie[1] < 2 ||
2195 !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
2196 return; /* AP does not support HT40 */
2197
2198 ie = wpa_bss_get_ie(wpa_s->current_bss,
2199 WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
2200 if (!ie || ie[1] < 14)
2201 return; /* AP does not request OBSS scans */
2202
2203 wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
2204 if (wpa_s->sme.obss_scan_int < 10) {
2205 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
2206 "replaced with the minimum 10 sec",
2207 wpa_s->sme.obss_scan_int);
2208 wpa_s->sme.obss_scan_int = 10;
2209 }
2210 wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
2211 wpa_s->sme.obss_scan_int);
2212 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
2213 sme_obss_scan_timeout, wpa_s, NULL);
2214 }
2215
2216
2217 #ifdef CONFIG_IEEE80211W
2218
2219 static const unsigned int sa_query_max_timeout = 1000;
2220 static const unsigned int sa_query_retry_timeout = 201;
2221
2222 static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
2223 {
2224 u32 tu;
2225 struct os_reltime now, passed;
2226 os_get_reltime(&now);
2227 os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed);
2228 tu = (passed.sec * 1000000 + passed.usec) / 1024;
2229 if (sa_query_max_timeout < tu) {
2230 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
2231 sme_stop_sa_query(wpa_s);
2232 wpa_supplicant_deauthenticate(
2233 wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
2234 return 1;
2235 }
2236
2237 return 0;
2238 }
2239
2240
2241 static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
2242 const u8 *trans_id)
2243 {
2244 u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN];
2245 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
2246 MACSTR, MAC2STR(wpa_s->bssid));
2247 wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
2248 trans_id, WLAN_SA_QUERY_TR_ID_LEN);
2249 req[0] = WLAN_ACTION_SA_QUERY;
2250 req[1] = WLAN_SA_QUERY_REQUEST;
2251 os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
2252 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
2253 wpa_s->own_addr, wpa_s->bssid,
2254 req, sizeof(req), 0) < 0)
2255 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
2256 "Request");
2257 }
2258
2259
2260 static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
2261 {
2262 struct wpa_supplicant *wpa_s = eloop_ctx;
2263 unsigned int timeout, sec, usec;
2264 u8 *trans_id, *nbuf;
2265
2266 if (wpa_s->sme.sa_query_count > 0 &&
2267 sme_check_sa_query_timeout(wpa_s))
2268 return;
2269
2270 nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
2271 wpa_s->sme.sa_query_count + 1,
2272 WLAN_SA_QUERY_TR_ID_LEN);
2273 if (nbuf == NULL) {
2274 sme_stop_sa_query(wpa_s);
2275 return;
2276 }
2277 if (wpa_s->sme.sa_query_count == 0) {
2278 /* Starting a new SA Query procedure */
2279 os_get_reltime(&wpa_s->sme.sa_query_start);
2280 }
2281 trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
2282 wpa_s->sme.sa_query_trans_id = nbuf;
2283 wpa_s->sme.sa_query_count++;
2284
2285 if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) {
2286 wpa_printf(MSG_DEBUG, "Could not generate SA Query ID");
2287 sme_stop_sa_query(wpa_s);
2288 return;
2289 }
2290
2291 timeout = sa_query_retry_timeout;
2292 sec = ((timeout / 1000) * 1024) / 1000;
2293 usec = (timeout % 1000) * 1024;
2294 eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
2295
2296 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
2297 wpa_s->sme.sa_query_count);
2298
2299 sme_send_sa_query_req(wpa_s, trans_id);
2300 }
2301
2302
2303 static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
2304 {
2305 sme_sa_query_timer(wpa_s, NULL);
2306 }
2307
2308
2309 static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
2310 {
2311 eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
2312 os_free(wpa_s->sme.sa_query_trans_id);
2313 wpa_s->sme.sa_query_trans_id = NULL;
2314 wpa_s->sme.sa_query_count = 0;
2315 }
2316
2317
2318 void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
2319 const u8 *da, u16 reason_code)
2320 {
2321 struct wpa_ssid *ssid;
2322 struct os_reltime now;
2323
2324 if (wpa_s->wpa_state != WPA_COMPLETED)
2325 return;
2326 ssid = wpa_s->current_ssid;
2327 if (wpas_get_ssid_pmf(wpa_s, ssid) == NO_MGMT_FRAME_PROTECTION)
2328 return;
2329 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
2330 return;
2331 if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
2332 reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
2333 return;
2334 if (wpa_s->sme.sa_query_count > 0)
2335 return;
2336
2337 os_get_reltime(&now);
2338 if (wpa_s->sme.last_unprot_disconnect.sec &&
2339 !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10))
2340 return; /* limit SA Query procedure frequency */
2341 wpa_s->sme.last_unprot_disconnect = now;
2342
2343 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
2344 "possible AP/STA state mismatch - trigger SA Query");
2345 sme_start_sa_query(wpa_s);
2346 }
2347
2348
2349 void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
2350 const u8 *data, size_t len)
2351 {
2352 int i;
2353
2354 if (wpa_s->sme.sa_query_trans_id == NULL ||
2355 len < 1 + WLAN_SA_QUERY_TR_ID_LEN ||
2356 data[0] != WLAN_SA_QUERY_RESPONSE)
2357 return;
2358 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
2359 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
2360
2361 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
2362 return;
2363
2364 for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
2365 if (os_memcmp(wpa_s->sme.sa_query_trans_id +
2366 i * WLAN_SA_QUERY_TR_ID_LEN,
2367 data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
2368 break;
2369 }
2370
2371 if (i >= wpa_s->sme.sa_query_count) {
2372 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
2373 "transaction identifier found");
2374 return;
2375 }
2376
2377 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
2378 "from " MACSTR, MAC2STR(sa));
2379 sme_stop_sa_query(wpa_s);
2380 }
2381
2382 #endif /* CONFIG_IEEE80211W */
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