Line data Source code
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 :
45 162 : static int index_within_array(const int *array, int idx)
46 : {
47 : int i;
48 175 : for (i = 0; i < idx; i++) {
49 13 : if (array[i] <= 0)
50 0 : return 0;
51 : }
52 162 : return 1;
53 : }
54 :
55 :
56 162 : static int sme_set_sae_group(struct wpa_supplicant *wpa_s)
57 : {
58 162 : int *groups = wpa_s->conf->sae_groups;
59 162 : int default_groups[] = { 19, 20, 21, 25, 26, 0 };
60 :
61 162 : if (!groups || groups[0] <= 0)
62 34 : groups = default_groups;
63 :
64 : /* Configuration may have changed, so validate current index */
65 162 : if (!index_within_array(groups, wpa_s->sme.sae_group_index))
66 0 : return -1;
67 :
68 : for (;;) {
69 166 : int group = groups[wpa_s->sme.sae_group_index];
70 166 : if (group <= 0)
71 4 : break;
72 162 : if (sae_set_group(&wpa_s->sme.sae, group) == 0) {
73 158 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected SAE group %d",
74 : wpa_s->sme.sae.group);
75 158 : return 0;
76 : }
77 4 : wpa_s->sme.sae_group_index++;
78 4 : }
79 :
80 4 : return -1;
81 : }
82 :
83 :
84 162 : static struct wpabuf * sme_auth_build_sae_commit(struct wpa_supplicant *wpa_s,
85 : struct wpa_ssid *ssid,
86 : const u8 *bssid)
87 : {
88 : struct wpabuf *buf;
89 : size_t len;
90 :
91 162 : if (ssid->passphrase == NULL) {
92 4 : wpa_printf(MSG_DEBUG, "SAE: No password available");
93 4 : return NULL;
94 : }
95 :
96 158 : if (sme_set_sae_group(wpa_s) < 0) {
97 3 : wpa_printf(MSG_DEBUG, "SAE: Failed to select group");
98 3 : return NULL;
99 : }
100 :
101 465 : if (sae_prepare_commit(wpa_s->own_addr, bssid,
102 155 : (u8 *) ssid->passphrase,
103 155 : os_strlen(ssid->passphrase),
104 : &wpa_s->sme.sae) < 0) {
105 35 : wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE");
106 35 : return NULL;
107 : }
108 :
109 120 : len = wpa_s->sme.sae_token ? wpabuf_len(wpa_s->sme.sae_token) : 0;
110 120 : buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + len);
111 120 : if (buf == NULL)
112 1 : return NULL;
113 :
114 119 : wpabuf_put_le16(buf, 1); /* Transaction seq# */
115 119 : wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
116 119 : sae_write_commit(&wpa_s->sme.sae, buf, wpa_s->sme.sae_token);
117 :
118 119 : return buf;
119 : }
120 :
121 :
122 70 : static struct wpabuf * sme_auth_build_sae_confirm(struct wpa_supplicant *wpa_s)
123 : {
124 : struct wpabuf *buf;
125 :
126 70 : buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN);
127 70 : if (buf == NULL)
128 1 : return NULL;
129 :
130 69 : wpabuf_put_le16(buf, 2); /* Transaction seq# */
131 69 : wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
132 69 : sae_write_confirm(&wpa_s->sme.sae, buf);
133 :
134 69 : return buf;
135 : }
136 :
137 : #endif /* CONFIG_SAE */
138 :
139 :
140 : /**
141 : * sme_auth_handle_rrm - Handle RRM aspects of current authentication attempt
142 : * @wpa_s: Pointer to wpa_supplicant data
143 : * @bss: Pointer to the bss which is the target of authentication attempt
144 : */
145 4634 : static void sme_auth_handle_rrm(struct wpa_supplicant *wpa_s,
146 : struct wpa_bss *bss)
147 : {
148 4634 : const u8 rrm_ie_len = 5;
149 : u8 *pos;
150 : const u8 *rrm_ie;
151 :
152 4634 : wpa_s->rrm.rrm_used = 0;
153 :
154 4634 : wpa_printf(MSG_DEBUG,
155 : "RRM: Determining whether RRM can be used - device support: 0x%x",
156 : wpa_s->drv_rrm_flags);
157 :
158 4634 : rrm_ie = wpa_bss_get_ie(bss, WLAN_EID_RRM_ENABLED_CAPABILITIES);
159 4634 : if (!rrm_ie || !(bss->caps & IEEE80211_CAP_RRM)) {
160 4630 : wpa_printf(MSG_DEBUG, "RRM: No RRM in network");
161 4630 : return;
162 : }
163 :
164 8 : if (!((wpa_s->drv_rrm_flags &
165 : WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) &&
166 4 : (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET)) &&
167 0 : !(wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_SUPPORT_RRM)) {
168 0 : wpa_printf(MSG_DEBUG,
169 : "RRM: Insufficient RRM support in driver - do not use RRM");
170 0 : return;
171 : }
172 :
173 4 : if (sizeof(wpa_s->sme.assoc_req_ie) <
174 4 : wpa_s->sme.assoc_req_ie_len + rrm_ie_len + 2) {
175 0 : wpa_printf(MSG_INFO,
176 : "RRM: Unable to use RRM, no room for RRM IE");
177 0 : return;
178 : }
179 :
180 4 : wpa_printf(MSG_DEBUG, "RRM: Adding RRM IE to Association Request");
181 4 : pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
182 4 : os_memset(pos, 0, 2 + rrm_ie_len);
183 4 : *pos++ = WLAN_EID_RRM_ENABLED_CAPABILITIES;
184 4 : *pos++ = rrm_ie_len;
185 :
186 : /* Set supported capabilites flags */
187 4 : if (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION)
188 0 : *pos |= WLAN_RRM_CAPS_LINK_MEASUREMENT;
189 :
190 4 : if (wpa_s->lci)
191 1 : pos[1] |= WLAN_RRM_CAPS_LCI_MEASUREMENT;
192 :
193 4 : wpa_s->sme.assoc_req_ie_len += rrm_ie_len + 2;
194 4 : wpa_s->rrm.rrm_used = 1;
195 : }
196 :
197 :
198 4639 : static void sme_send_authentication(struct wpa_supplicant *wpa_s,
199 : struct wpa_bss *bss, struct wpa_ssid *ssid,
200 : int start)
201 : {
202 : struct wpa_driver_auth_params params;
203 : struct wpa_ssid *old_ssid;
204 : #ifdef CONFIG_IEEE80211R
205 : const u8 *ie;
206 : #endif /* CONFIG_IEEE80211R */
207 : #ifdef CONFIG_IEEE80211R
208 4639 : const u8 *md = NULL;
209 : #endif /* CONFIG_IEEE80211R */
210 : int i, bssid_changed;
211 4639 : struct wpabuf *resp = NULL;
212 : u8 ext_capab[18];
213 : int ext_capab_len;
214 : int skip_auth;
215 : #ifdef CONFIG_MBO
216 : const u8 *mbo;
217 : #endif /* CONFIG_MBO */
218 :
219 4639 : if (bss == NULL) {
220 0 : wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for "
221 : "the network");
222 0 : wpas_connect_work_done(wpa_s);
223 0 : return;
224 : }
225 :
226 4639 : skip_auth = wpa_s->conf->reassoc_same_bss_optim &&
227 : wpa_s->reassoc_same_bss;
228 4639 : wpa_s->current_bss = bss;
229 :
230 4639 : os_memset(¶ms, 0, sizeof(params));
231 4639 : wpa_s->reassociate = 0;
232 :
233 4639 : params.freq = bss->freq;
234 4639 : params.bssid = bss->bssid;
235 4639 : params.ssid = bss->ssid;
236 4639 : params.ssid_len = bss->ssid_len;
237 4639 : params.p2p = ssid->p2p_group;
238 :
239 8358 : if (wpa_s->sme.ssid_len != params.ssid_len ||
240 3719 : os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
241 1108 : wpa_s->sme.prev_bssid_set = 0;
242 :
243 4639 : wpa_s->sme.freq = params.freq;
244 4639 : os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
245 4639 : wpa_s->sme.ssid_len = params.ssid_len;
246 :
247 4639 : params.auth_alg = WPA_AUTH_ALG_OPEN;
248 : #ifdef IEEE8021X_EAPOL
249 4639 : if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
250 21 : if (ssid->leap) {
251 2 : if (ssid->non_leap == 0)
252 1 : params.auth_alg = WPA_AUTH_ALG_LEAP;
253 : else
254 1 : params.auth_alg |= WPA_AUTH_ALG_LEAP;
255 : }
256 : }
257 : #endif /* IEEE8021X_EAPOL */
258 4639 : wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
259 : params.auth_alg);
260 4639 : if (ssid->auth_alg) {
261 366 : params.auth_alg = ssid->auth_alg;
262 366 : wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
263 : "0x%x", params.auth_alg);
264 : }
265 : #ifdef CONFIG_SAE
266 4639 : wpa_s->sme.sae_pmksa_caching = 0;
267 4639 : if (wpa_key_mgmt_sae(ssid->key_mgmt)) {
268 : const u8 *rsn;
269 : struct wpa_ie_data ied;
270 :
271 236 : rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
272 236 : if (!rsn) {
273 0 : wpa_dbg(wpa_s, MSG_DEBUG,
274 : "SAE enabled, but target BSS does not advertise RSN");
275 472 : } else if (wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 &&
276 236 : wpa_key_mgmt_sae(ied.key_mgmt)) {
277 236 : wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg");
278 236 : params.auth_alg = WPA_AUTH_ALG_SAE;
279 : } else {
280 0 : wpa_dbg(wpa_s, MSG_DEBUG,
281 : "SAE enabled, but target BSS does not advertise SAE AKM for RSN");
282 : }
283 : }
284 : #endif /* CONFIG_SAE */
285 :
286 23195 : for (i = 0; i < NUM_WEP_KEYS; i++) {
287 18556 : if (ssid->wep_key_len[i])
288 28 : params.wep_key[i] = ssid->wep_key[i];
289 18556 : params.wep_key_len[i] = ssid->wep_key_len[i];
290 : }
291 4639 : params.wep_tx_keyidx = ssid->wep_tx_keyidx;
292 :
293 4639 : bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
294 4639 : os_memset(wpa_s->bssid, 0, ETH_ALEN);
295 4639 : os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
296 4639 : if (bssid_changed)
297 325 : wpas_notify_bssid_changed(wpa_s);
298 :
299 9173 : if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
300 8615 : wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
301 7647 : wpa_key_mgmt_wpa(ssid->key_mgmt)) {
302 : int try_opportunistic;
303 7142 : try_opportunistic = (ssid->proactive_key_caching < 0 ?
304 3553 : wpa_s->conf->okc :
305 7142 : ssid->proactive_key_caching) &&
306 18 : (ssid->proto & WPA_PROTO_RSN);
307 3571 : if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
308 3571 : wpa_s->current_ssid,
309 : try_opportunistic) == 0)
310 89 : eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
311 3571 : wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
312 7142 : if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
313 3571 : wpa_s->sme.assoc_req_ie,
314 : &wpa_s->sme.assoc_req_ie_len)) {
315 5 : wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
316 : "key management and encryption suites");
317 5 : wpas_connect_work_done(wpa_s);
318 5 : return;
319 : }
320 1089 : } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
321 21 : wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) {
322 : /*
323 : * Both WPA and non-WPA IEEE 802.1X enabled in configuration -
324 : * use non-WPA since the scan results did not indicate that the
325 : * AP is using WPA or WPA2.
326 : */
327 1 : wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
328 1 : wpa_s->sme.assoc_req_ie_len = 0;
329 1067 : } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
330 1 : wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
331 2 : if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
332 1 : wpa_s->sme.assoc_req_ie,
333 : &wpa_s->sme.assoc_req_ie_len)) {
334 0 : wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
335 : "key management and encryption suites (no "
336 : "scan results)");
337 0 : wpas_connect_work_done(wpa_s);
338 0 : return;
339 : }
340 : #ifdef CONFIG_WPS
341 1066 : } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
342 : struct wpabuf *wps_ie;
343 536 : wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
344 536 : if (wps_ie && wpabuf_len(wps_ie) <=
345 : sizeof(wpa_s->sme.assoc_req_ie)) {
346 535 : wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
347 535 : os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
348 : wpa_s->sme.assoc_req_ie_len);
349 : } else
350 1 : wpa_s->sme.assoc_req_ie_len = 0;
351 536 : wpabuf_free(wps_ie);
352 536 : wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
353 : #endif /* CONFIG_WPS */
354 : } else {
355 530 : wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
356 530 : wpa_s->sme.assoc_req_ie_len = 0;
357 : }
358 :
359 : #ifdef CONFIG_IEEE80211R
360 4634 : ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
361 4634 : if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
362 193 : md = ie + 2;
363 4634 : wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
364 4634 : if (md) {
365 : /* Prepare for the next transition */
366 193 : wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
367 : }
368 :
369 4634 : if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) {
370 185 : if (wpa_s->sme.assoc_req_ie_len + 5 <
371 : sizeof(wpa_s->sme.assoc_req_ie)) {
372 : struct rsn_mdie *mdie;
373 185 : u8 *pos = wpa_s->sme.assoc_req_ie +
374 185 : wpa_s->sme.assoc_req_ie_len;
375 185 : *pos++ = WLAN_EID_MOBILITY_DOMAIN;
376 185 : *pos++ = sizeof(*mdie);
377 185 : mdie = (struct rsn_mdie *) pos;
378 185 : os_memcpy(mdie->mobility_domain, md,
379 : MOBILITY_DOMAIN_ID_LEN);
380 185 : mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
381 185 : wpa_s->sme.assoc_req_ie_len += 5;
382 : }
383 :
384 316 : if (wpa_s->sme.ft_used &&
385 262 : os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
386 131 : wpa_sm_has_ptk(wpa_s->wpa)) {
387 131 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT "
388 : "over-the-air");
389 131 : params.auth_alg = WPA_AUTH_ALG_FT;
390 131 : params.ie = wpa_s->sme.ft_ies;
391 131 : params.ie_len = wpa_s->sme.ft_ies_len;
392 : }
393 : }
394 : #endif /* CONFIG_IEEE80211R */
395 :
396 : #ifdef CONFIG_IEEE80211W
397 4634 : wpa_s->sme.mfp = wpas_get_ssid_pmf(wpa_s, ssid);
398 4634 : if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) {
399 469 : const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
400 : struct wpa_ie_data _ie;
401 937 : if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
402 468 : _ie.capabilities &
403 : (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
404 71 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports "
405 : "MFP: require MFP");
406 71 : wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
407 : }
408 : }
409 : #endif /* CONFIG_IEEE80211W */
410 :
411 : #ifdef CONFIG_P2P
412 4634 : if (wpa_s->global->p2p) {
413 : u8 *pos;
414 : size_t len;
415 : int res;
416 4634 : pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
417 4634 : len = sizeof(wpa_s->sme.assoc_req_ie) -
418 4634 : wpa_s->sme.assoc_req_ie_len;
419 4634 : res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
420 : ssid->p2p_group);
421 4634 : if (res >= 0)
422 4628 : wpa_s->sme.assoc_req_ie_len += res;
423 : }
424 : #endif /* CONFIG_P2P */
425 :
426 : #ifdef CONFIG_FST
427 4634 : if (wpa_s->fst_ies) {
428 10 : int fst_ies_len = wpabuf_len(wpa_s->fst_ies);
429 :
430 10 : if (wpa_s->sme.assoc_req_ie_len + fst_ies_len <=
431 : sizeof(wpa_s->sme.assoc_req_ie)) {
432 10 : os_memcpy(wpa_s->sme.assoc_req_ie +
433 : wpa_s->sme.assoc_req_ie_len,
434 : wpabuf_head(wpa_s->fst_ies),
435 : fst_ies_len);
436 10 : wpa_s->sme.assoc_req_ie_len += fst_ies_len;
437 : }
438 : }
439 : #endif /* CONFIG_FST */
440 :
441 4634 : sme_auth_handle_rrm(wpa_s, bss);
442 :
443 : #ifdef CONFIG_MBO
444 4634 : mbo = wpa_bss_get_vendor_ie(bss, MBO_IE_VENDOR_TYPE);
445 4634 : if (mbo) {
446 : int len;
447 :
448 40 : len = wpas_mbo_supp_op_class_ie(
449 : wpa_s, bss->freq,
450 20 : wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
451 : sizeof(wpa_s->sme.assoc_req_ie) -
452 20 : wpa_s->sme.assoc_req_ie_len);
453 20 : if (len > 0)
454 20 : wpa_s->sme.assoc_req_ie_len += len;
455 : }
456 : #endif /* CONFIG_MBO */
457 :
458 4634 : if (params.p2p)
459 528 : wpa_drv_get_ext_capa(wpa_s, WPA_IF_P2P_CLIENT);
460 : else
461 4106 : wpa_drv_get_ext_capa(wpa_s, WPA_IF_STATION);
462 :
463 4634 : ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab,
464 : sizeof(ext_capab));
465 4634 : if (ext_capab_len > 0) {
466 4634 : u8 *pos = wpa_s->sme.assoc_req_ie;
467 4634 : if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
468 3517 : pos += 2 + pos[1];
469 4634 : os_memmove(pos + ext_capab_len, pos,
470 : wpa_s->sme.assoc_req_ie_len -
471 : (pos - wpa_s->sme.assoc_req_ie));
472 4634 : wpa_s->sme.assoc_req_ie_len += ext_capab_len;
473 4634 : os_memcpy(pos, ext_capab, ext_capab_len);
474 : }
475 :
476 : #ifdef CONFIG_HS20
477 4634 : if (is_hs20_network(wpa_s, ssid, bss)) {
478 : struct wpabuf *hs20;
479 :
480 113 : hs20 = wpabuf_alloc(20);
481 113 : if (hs20) {
482 113 : int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid);
483 : size_t len;
484 :
485 113 : wpas_hs20_add_indication(hs20, pps_mo_id);
486 113 : len = sizeof(wpa_s->sme.assoc_req_ie) -
487 113 : wpa_s->sme.assoc_req_ie_len;
488 113 : if (wpabuf_len(hs20) <= len) {
489 113 : os_memcpy(wpa_s->sme.assoc_req_ie +
490 : wpa_s->sme.assoc_req_ie_len,
491 : wpabuf_head(hs20), wpabuf_len(hs20));
492 113 : wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
493 : }
494 113 : wpabuf_free(hs20);
495 : }
496 : }
497 : #endif /* CONFIG_HS20 */
498 :
499 4634 : if (wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]) {
500 31 : struct wpabuf *buf = wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ];
501 : size_t len;
502 :
503 31 : len = sizeof(wpa_s->sme.assoc_req_ie) -
504 31 : wpa_s->sme.assoc_req_ie_len;
505 31 : if (wpabuf_len(buf) <= len) {
506 31 : os_memcpy(wpa_s->sme.assoc_req_ie +
507 : wpa_s->sme.assoc_req_ie_len,
508 : wpabuf_head(buf), wpabuf_len(buf));
509 31 : wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf);
510 : }
511 : }
512 :
513 : #ifdef CONFIG_MBO
514 4634 : if (mbo) {
515 : int len;
516 :
517 40 : len = wpas_mbo_ie(wpa_s, wpa_s->sme.assoc_req_ie +
518 20 : wpa_s->sme.assoc_req_ie_len,
519 : sizeof(wpa_s->sme.assoc_req_ie) -
520 20 : wpa_s->sme.assoc_req_ie_len);
521 20 : if (len >= 0)
522 20 : wpa_s->sme.assoc_req_ie_len += len;
523 : }
524 : #endif /* CONFIG_MBO */
525 :
526 : #ifdef CONFIG_SAE
527 4868 : if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE &&
528 234 : pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, ssid, 0) == 0)
529 : {
530 2 : wpa_dbg(wpa_s, MSG_DEBUG,
531 : "PMKSA cache entry found - try to use PMKSA caching instead of new SAE authentication");
532 2 : params.auth_alg = WPA_AUTH_ALG_OPEN;
533 2 : wpa_s->sme.sae_pmksa_caching = 1;
534 : }
535 :
536 4634 : if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE) {
537 232 : if (start)
538 162 : resp = sme_auth_build_sae_commit(wpa_s, ssid,
539 162 : bss->bssid);
540 : else
541 70 : resp = sme_auth_build_sae_confirm(wpa_s);
542 232 : if (resp == NULL) {
543 44 : wpas_connection_failed(wpa_s, bss->bssid);
544 44 : return;
545 : }
546 188 : params.sae_data = wpabuf_head(resp);
547 188 : params.sae_data_len = wpabuf_len(resp);
548 188 : wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED;
549 : }
550 : #endif /* CONFIG_SAE */
551 :
552 4590 : wpa_supplicant_cancel_sched_scan(wpa_s);
553 4590 : wpa_supplicant_cancel_scan(wpa_s);
554 :
555 32130 : wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
556 27540 : " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
557 : wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
558 :
559 4590 : wpa_clear_keys(wpa_s, bss->bssid);
560 4590 : wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
561 4590 : old_ssid = wpa_s->current_ssid;
562 4590 : wpa_s->current_ssid = ssid;
563 4590 : wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
564 4590 : wpa_supplicant_initiate_eapol(wpa_s);
565 4590 : if (old_ssid != wpa_s->current_ssid)
566 1210 : wpas_notify_network_changed(wpa_s);
567 :
568 : #ifdef CONFIG_HS20
569 4590 : hs20_configure_frame_filters(wpa_s);
570 : #endif /* CONFIG_HS20 */
571 :
572 : #ifdef CONFIG_P2P
573 : /*
574 : * If multi-channel concurrency is not supported, check for any
575 : * frequency conflict. In case of any frequency conflict, remove the
576 : * least prioritized connection.
577 : */
578 4590 : if (wpa_s->num_multichan_concurrent < 2) {
579 : int freq, num;
580 4573 : num = get_shared_radio_freqs(wpa_s, &freq, 1);
581 4573 : if (num > 0 && freq > 0 && freq != params.freq) {
582 9 : wpa_printf(MSG_DEBUG,
583 : "Conflicting frequency found (%d != %d)",
584 : freq, params.freq);
585 9 : if (wpas_p2p_handle_frequency_conflicts(wpa_s,
586 : params.freq,
587 : ssid) < 0) {
588 0 : wpas_connection_failed(wpa_s, bss->bssid);
589 0 : wpa_supplicant_mark_disassoc(wpa_s);
590 0 : wpabuf_free(resp);
591 0 : wpas_connect_work_done(wpa_s);
592 0 : return;
593 : }
594 : }
595 : }
596 : #endif /* CONFIG_P2P */
597 :
598 4590 : if (skip_auth) {
599 2 : wpa_msg(wpa_s, MSG_DEBUG,
600 : "SME: Skip authentication step on reassoc-to-same-BSS");
601 2 : wpabuf_free(resp);
602 2 : sme_associate(wpa_s, ssid->mode, bss->bssid, WLAN_AUTH_OPEN);
603 2 : return;
604 : }
605 :
606 :
607 4588 : wpa_s->sme.auth_alg = params.auth_alg;
608 4588 : if (wpa_drv_authenticate(wpa_s, ¶ms) < 0) {
609 1 : wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
610 : "driver failed");
611 1 : wpas_connection_failed(wpa_s, bss->bssid);
612 1 : wpa_supplicant_mark_disassoc(wpa_s);
613 1 : wpabuf_free(resp);
614 1 : wpas_connect_work_done(wpa_s);
615 1 : return;
616 : }
617 :
618 4587 : eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
619 : NULL);
620 :
621 : /*
622 : * Association will be started based on the authentication event from
623 : * the driver.
624 : */
625 :
626 4587 : wpabuf_free(resp);
627 : }
628 :
629 :
630 4568 : static void sme_auth_start_cb(struct wpa_radio_work *work, int deinit)
631 : {
632 4568 : struct wpa_connect_work *cwork = work->ctx;
633 4568 : struct wpa_supplicant *wpa_s = work->wpa_s;
634 :
635 4568 : if (deinit) {
636 5 : if (work->started)
637 1 : wpa_s->connect_work = NULL;
638 :
639 5 : wpas_connect_work_free(cwork);
640 5 : return;
641 : }
642 :
643 4563 : wpa_s->connect_work = work;
644 :
645 9125 : if (cwork->bss_removed ||
646 9124 : !wpas_valid_bss_ssid(wpa_s, cwork->bss, cwork->ssid) ||
647 4562 : wpas_network_disabled(wpa_s, cwork->ssid)) {
648 2 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt");
649 2 : wpas_connect_work_done(wpa_s);
650 2 : return;
651 : }
652 :
653 4561 : sme_send_authentication(wpa_s, cwork->bss, cwork->ssid, 1);
654 : }
655 :
656 :
657 4571 : void sme_authenticate(struct wpa_supplicant *wpa_s,
658 : struct wpa_bss *bss, struct wpa_ssid *ssid)
659 : {
660 : struct wpa_connect_work *cwork;
661 :
662 4571 : if (bss == NULL || ssid == NULL)
663 2 : return;
664 4569 : if (wpa_s->connect_work) {
665 0 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reject sme_authenticate() call since connect_work exist");
666 0 : return;
667 : }
668 :
669 4569 : if (radio_work_pending(wpa_s, "sme-connect")) {
670 : /*
671 : * The previous sme-connect work might no longer be valid due to
672 : * the fact that the BSS list was updated. In addition, it makes
673 : * sense to adhere to the 'newer' decision.
674 : */
675 3 : wpa_dbg(wpa_s, MSG_DEBUG,
676 : "SME: Remove previous pending sme-connect");
677 3 : radio_remove_works(wpa_s, "sme-connect", 0);
678 : }
679 :
680 4569 : wpas_abort_ongoing_scan(wpa_s);
681 :
682 4569 : cwork = os_zalloc(sizeof(*cwork));
683 4569 : if (cwork == NULL)
684 1 : return;
685 4568 : cwork->bss = bss;
686 4568 : cwork->ssid = ssid;
687 4568 : cwork->sme = 1;
688 :
689 : #ifdef CONFIG_SAE
690 4568 : wpa_s->sme.sae.state = SAE_NOTHING;
691 4568 : wpa_s->sme.sae.send_confirm = 0;
692 4568 : wpa_s->sme.sae_group_index = 0;
693 : #endif /* CONFIG_SAE */
694 :
695 4568 : if (radio_add_work(wpa_s, bss->freq, "sme-connect", 1,
696 : sme_auth_start_cb, cwork) < 0)
697 1 : wpas_connect_work_free(cwork);
698 : }
699 :
700 :
701 : #ifdef CONFIG_SAE
702 :
703 185 : static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
704 : u16 status_code, const u8 *data, size_t len)
705 : {
706 : int *groups;
707 :
708 185 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
709 : "status code %u", auth_transaction, status_code);
710 :
711 185 : if (auth_transaction == 1 &&
712 7 : status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
713 14 : wpa_s->sme.sae.state == SAE_COMMITTED &&
714 14 : wpa_s->current_bss && wpa_s->current_ssid) {
715 7 : int default_groups[] = { 19, 20, 21, 25, 26, 0 };
716 : u16 group;
717 :
718 7 : groups = wpa_s->conf->sae_groups;
719 7 : if (!groups || groups[0] <= 0)
720 6 : groups = default_groups;
721 :
722 7 : if (len < sizeof(le16)) {
723 1 : wpa_dbg(wpa_s, MSG_DEBUG,
724 : "SME: Too short SAE anti-clogging token request");
725 1 : return -1;
726 : }
727 6 : group = WPA_GET_LE16(data);
728 6 : wpa_dbg(wpa_s, MSG_DEBUG,
729 : "SME: SAE anti-clogging token requested (group %u)",
730 : group);
731 6 : if (sae_group_allowed(&wpa_s->sme.sae, groups, group) !=
732 : WLAN_STATUS_SUCCESS) {
733 1 : wpa_dbg(wpa_s, MSG_ERROR,
734 : "SME: SAE group %u of anti-clogging request is invalid",
735 : group);
736 1 : return -1;
737 : }
738 5 : wpabuf_free(wpa_s->sme.sae_token);
739 5 : wpa_s->sme.sae_token = wpabuf_alloc_copy(data + sizeof(le16),
740 : len - sizeof(le16));
741 5 : sme_send_authentication(wpa_s, wpa_s->current_bss,
742 : wpa_s->current_ssid, 1);
743 5 : return 0;
744 : }
745 :
746 178 : if (auth_transaction == 1 &&
747 4 : status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
748 8 : wpa_s->sme.sae.state == SAE_COMMITTED &&
749 8 : wpa_s->current_bss && wpa_s->current_ssid) {
750 4 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
751 4 : wpa_s->sme.sae_group_index++;
752 4 : if (sme_set_sae_group(wpa_s) < 0)
753 1 : return -1; /* no other groups enabled */
754 3 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
755 3 : sme_send_authentication(wpa_s, wpa_s->current_bss,
756 : wpa_s->current_ssid, 1);
757 3 : return 0;
758 : }
759 :
760 174 : if (status_code != WLAN_STATUS_SUCCESS)
761 1 : return -1;
762 :
763 173 : if (auth_transaction == 1) {
764 : u16 res;
765 :
766 104 : groups = wpa_s->conf->sae_groups;
767 :
768 104 : wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
769 208 : if (wpa_s->current_bss == NULL ||
770 104 : wpa_s->current_ssid == NULL)
771 0 : return -1;
772 104 : if (wpa_s->sme.sae.state != SAE_COMMITTED)
773 0 : return -1;
774 104 : if (groups && groups[0] <= 0)
775 20 : groups = NULL;
776 104 : res = sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
777 : groups);
778 104 : if (res == SAE_SILENTLY_DISCARD) {
779 2 : wpa_printf(MSG_DEBUG,
780 : "SAE: Drop commit message due to reflection attack");
781 2 : return 0;
782 : }
783 102 : if (res != WLAN_STATUS_SUCCESS)
784 20 : return -1;
785 :
786 82 : if (sae_process_commit(&wpa_s->sme.sae) < 0) {
787 12 : wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
788 : "commit");
789 12 : return -1;
790 : }
791 :
792 70 : wpabuf_free(wpa_s->sme.sae_token);
793 70 : wpa_s->sme.sae_token = NULL;
794 70 : sme_send_authentication(wpa_s, wpa_s->current_bss,
795 : wpa_s->current_ssid, 0);
796 70 : return 0;
797 69 : } else if (auth_transaction == 2) {
798 69 : wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
799 69 : if (wpa_s->sme.sae.state != SAE_CONFIRMED)
800 0 : return -1;
801 69 : if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
802 3 : return -1;
803 66 : wpa_s->sme.sae.state = SAE_ACCEPTED;
804 66 : sae_clear_temp_data(&wpa_s->sme.sae);
805 66 : return 1;
806 : }
807 :
808 0 : return -1;
809 : }
810 : #endif /* CONFIG_SAE */
811 :
812 :
813 4570 : void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
814 : {
815 4570 : struct wpa_ssid *ssid = wpa_s->current_ssid;
816 :
817 4570 : if (ssid == NULL) {
818 5 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
819 : "when network is not selected");
820 5 : return;
821 : }
822 :
823 4565 : if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
824 0 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
825 : "when not in authenticating state");
826 0 : return;
827 : }
828 :
829 4565 : if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
830 0 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
831 : "unexpected peer " MACSTR,
832 : MAC2STR(data->auth.peer));
833 0 : return;
834 : }
835 :
836 4565 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
837 : " auth_type=%d auth_transaction=%d status_code=%d",
838 : MAC2STR(data->auth.peer), data->auth.auth_type,
839 : data->auth.auth_transaction, data->auth.status_code);
840 9130 : wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
841 4565 : data->auth.ies, data->auth.ies_len);
842 :
843 4565 : eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
844 :
845 : #ifdef CONFIG_SAE
846 4565 : if (data->auth.auth_type == WLAN_AUTH_SAE) {
847 : int res;
848 370 : res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
849 185 : data->auth.status_code, data->auth.ies,
850 : data->auth.ies_len);
851 185 : if (res < 0) {
852 39 : wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
853 39 : wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
854 :
855 : }
856 185 : if (res != 1)
857 119 : return;
858 :
859 66 : wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for "
860 : "4-way handshake");
861 66 : wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN,
862 66 : wpa_s->sme.sae.pmkid, wpa_s->pending_bssid);
863 : }
864 : #endif /* CONFIG_SAE */
865 :
866 4446 : if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
867 36 : char *ie_txt = NULL;
868 :
869 36 : if (data->auth.ies && data->auth.ies_len) {
870 3 : size_t buflen = 2 * data->auth.ies_len + 1;
871 3 : ie_txt = os_malloc(buflen);
872 3 : if (ie_txt) {
873 3 : wpa_snprintf_hex(ie_txt, buflen, data->auth.ies,
874 : data->auth.ies_len);
875 : }
876 : }
877 324 : wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AUTH_REJECT MACSTR
878 : " auth_type=%u auth_transaction=%u status_code=%u ie=%s",
879 252 : MAC2STR(data->auth.peer), data->auth.auth_type,
880 72 : data->auth.auth_transaction, data->auth.status_code,
881 : ie_txt);
882 36 : os_free(ie_txt);
883 :
884 36 : if (data->auth.status_code !=
885 6 : WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
886 12 : wpa_s->sme.auth_alg == data->auth.auth_type ||
887 6 : wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
888 33 : wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
889 33 : wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
890 33 : return;
891 : }
892 :
893 3 : wpas_connect_work_done(wpa_s);
894 :
895 3 : switch (data->auth.auth_type) {
896 : case WLAN_AUTH_OPEN:
897 1 : wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
898 :
899 1 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
900 1 : wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
901 : wpa_s->current_ssid);
902 1 : return;
903 :
904 : case WLAN_AUTH_SHARED_KEY:
905 1 : wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
906 :
907 1 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
908 1 : wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
909 : wpa_s->current_ssid);
910 1 : return;
911 :
912 : default:
913 1 : return;
914 : }
915 : }
916 :
917 : #ifdef CONFIG_IEEE80211R
918 4410 : if (data->auth.auth_type == WLAN_AUTH_FT) {
919 130 : if (wpa_ft_process_response(wpa_s->wpa, data->auth.ies,
920 : data->auth.ies_len, 0,
921 130 : data->auth.peer, NULL, 0) < 0) {
922 8 : wpa_dbg(wpa_s, MSG_DEBUG,
923 : "SME: FT Authentication response processing failed");
924 48 : wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
925 : MACSTR
926 : " reason=%d locally_generated=1",
927 48 : MAC2STR(wpa_s->pending_bssid),
928 : WLAN_REASON_DEAUTH_LEAVING);
929 8 : wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
930 8 : wpa_supplicant_mark_disassoc(wpa_s);
931 8 : return;
932 : }
933 : }
934 : #endif /* CONFIG_IEEE80211R */
935 :
936 4402 : sme_associate(wpa_s, ssid->mode, data->auth.peer,
937 4402 : data->auth.auth_type);
938 : }
939 :
940 :
941 4512 : void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
942 : const u8 *bssid, u16 auth_type)
943 : {
944 : struct wpa_driver_associate_params params;
945 : struct ieee802_11_elems elems;
946 : #ifdef CONFIG_HT_OVERRIDES
947 : struct ieee80211_ht_capabilities htcaps;
948 : struct ieee80211_ht_capabilities htcaps_mask;
949 : #endif /* CONFIG_HT_OVERRIDES */
950 : #ifdef CONFIG_VHT_OVERRIDES
951 : struct ieee80211_vht_capabilities vhtcaps;
952 : struct ieee80211_vht_capabilities vhtcaps_mask;
953 : #endif /* CONFIG_VHT_OVERRIDES */
954 :
955 4512 : os_memset(¶ms, 0, sizeof(params));
956 4512 : params.bssid = bssid;
957 4512 : params.ssid = wpa_s->sme.ssid;
958 4512 : params.ssid_len = wpa_s->sme.ssid_len;
959 4512 : params.freq.freq = wpa_s->sme.freq;
960 9024 : params.bg_scan_period = wpa_s->current_ssid ?
961 4512 : wpa_s->current_ssid->bg_scan_period : -1;
962 9024 : params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
963 4512 : wpa_s->sme.assoc_req_ie : NULL;
964 4512 : params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
965 4512 : params.pairwise_suite = wpa_s->pairwise_cipher;
966 4512 : params.group_suite = wpa_s->group_cipher;
967 4512 : params.key_mgmt_suite = wpa_s->key_mgmt;
968 4512 : params.wpa_proto = wpa_s->wpa_proto;
969 : #ifdef CONFIG_HT_OVERRIDES
970 4512 : os_memset(&htcaps, 0, sizeof(htcaps));
971 4512 : os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
972 4512 : params.htcaps = (u8 *) &htcaps;
973 4512 : params.htcaps_mask = (u8 *) &htcaps_mask;
974 4512 : wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, ¶ms);
975 : #endif /* CONFIG_HT_OVERRIDES */
976 : #ifdef CONFIG_VHT_OVERRIDES
977 4512 : os_memset(&vhtcaps, 0, sizeof(vhtcaps));
978 4512 : os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
979 4512 : params.vhtcaps = &vhtcaps;
980 4512 : params.vhtcaps_mask = &vhtcaps_mask;
981 4512 : wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, ¶ms);
982 : #endif /* CONFIG_VHT_OVERRIDES */
983 : #ifdef CONFIG_IEEE80211R
984 4512 : if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
985 230 : params.wpa_ie = wpa_s->sme.ft_ies;
986 230 : params.wpa_ie_len = wpa_s->sme.ft_ies_len;
987 : }
988 : #endif /* CONFIG_IEEE80211R */
989 4512 : params.mode = mode;
990 4512 : params.mgmt_frame_protection = wpa_s->sme.mfp;
991 4512 : params.rrm_used = wpa_s->rrm.rrm_used;
992 4512 : if (wpa_s->sme.prev_bssid_set)
993 331 : params.prev_bssid = wpa_s->sme.prev_bssid;
994 :
995 40608 : wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
996 27072 : " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
997 9024 : params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
998 : params.freq.freq);
999 :
1000 4512 : wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
1001 :
1002 9024 : if (params.wpa_ie == NULL ||
1003 4512 : ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
1004 : < 0) {
1005 0 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
1006 0 : os_memset(&elems, 0, sizeof(elems));
1007 : }
1008 4512 : if (elems.rsn_ie) {
1009 3428 : params.wpa_proto = WPA_PROTO_RSN;
1010 3428 : wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
1011 3428 : elems.rsn_ie_len + 2);
1012 1084 : } else if (elems.wpa_ie) {
1013 47 : params.wpa_proto = WPA_PROTO_WPA;
1014 47 : wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
1015 47 : elems.wpa_ie_len + 2);
1016 1037 : } else if (elems.osen) {
1017 1 : params.wpa_proto = WPA_PROTO_OSEN;
1018 1 : wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2,
1019 1 : elems.osen_len + 2);
1020 : } else
1021 1036 : wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1022 4512 : if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
1023 521 : params.p2p = 1;
1024 :
1025 4512 : if (wpa_s->p2pdev->set_sta_uapsd)
1026 0 : params.uapsd = wpa_s->p2pdev->sta_uapsd;
1027 : else
1028 4512 : params.uapsd = -1;
1029 :
1030 4512 : if (wpa_drv_associate(wpa_s, ¶ms) < 0) {
1031 1 : wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
1032 : "driver failed");
1033 1 : wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1034 1 : wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1035 1 : os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1036 4513 : return;
1037 : }
1038 :
1039 4511 : eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
1040 : NULL);
1041 : }
1042 :
1043 :
1044 968 : int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
1045 : const u8 *ies, size_t ies_len)
1046 : {
1047 968 : if (md == NULL || ies == NULL) {
1048 51 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
1049 51 : os_free(wpa_s->sme.ft_ies);
1050 51 : wpa_s->sme.ft_ies = NULL;
1051 51 : wpa_s->sme.ft_ies_len = 0;
1052 51 : wpa_s->sme.ft_used = 0;
1053 51 : return 0;
1054 : }
1055 :
1056 917 : os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
1057 917 : wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
1058 917 : os_free(wpa_s->sme.ft_ies);
1059 917 : wpa_s->sme.ft_ies = os_malloc(ies_len);
1060 917 : if (wpa_s->sme.ft_ies == NULL)
1061 1 : return -1;
1062 916 : os_memcpy(wpa_s->sme.ft_ies, ies, ies_len);
1063 916 : wpa_s->sme.ft_ies_len = ies_len;
1064 916 : return 0;
1065 : }
1066 :
1067 :
1068 43 : static void sme_deauth(struct wpa_supplicant *wpa_s)
1069 : {
1070 : int bssid_changed;
1071 :
1072 43 : bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
1073 :
1074 43 : if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
1075 : WLAN_REASON_DEAUTH_LEAVING) < 0) {
1076 43 : wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
1077 : "failed");
1078 : }
1079 43 : wpa_s->sme.prev_bssid_set = 0;
1080 :
1081 43 : wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1082 43 : wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1083 43 : os_memset(wpa_s->bssid, 0, ETH_ALEN);
1084 43 : os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1085 43 : if (bssid_changed)
1086 0 : wpas_notify_bssid_changed(wpa_s);
1087 43 : }
1088 :
1089 :
1090 44 : void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
1091 : union wpa_event_data *data)
1092 : {
1093 44 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
1094 : "status code %d", MAC2STR(wpa_s->pending_bssid),
1095 : data->assoc_reject.status_code);
1096 :
1097 44 : eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1098 :
1099 : #ifdef CONFIG_SAE
1100 45 : if (wpa_s->sme.sae_pmksa_caching && wpa_s->current_ssid &&
1101 1 : wpa_key_mgmt_sae(wpa_s->current_ssid->key_mgmt)) {
1102 1 : wpa_dbg(wpa_s, MSG_DEBUG,
1103 : "PMKSA caching attempt rejected - drop PMKSA cache entry and fall back to SAE authentication");
1104 1 : wpa_sm_aborted_cached(wpa_s->wpa);
1105 1 : wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid);
1106 1 : if (wpa_s->current_bss) {
1107 1 : struct wpa_bss *bss = wpa_s->current_bss;
1108 1 : struct wpa_ssid *ssid = wpa_s->current_ssid;
1109 :
1110 1 : wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
1111 : WLAN_REASON_DEAUTH_LEAVING);
1112 1 : wpas_connect_work_done(wpa_s);
1113 1 : wpa_supplicant_mark_disassoc(wpa_s);
1114 1 : wpa_supplicant_connect(wpa_s, bss, ssid);
1115 45 : return;
1116 : }
1117 : }
1118 : #endif /* CONFIG_SAE */
1119 :
1120 : /*
1121 : * For now, unconditionally terminate the previous authentication. In
1122 : * theory, this should not be needed, but mac80211 gets quite confused
1123 : * if the authentication is left pending.. Some roaming cases might
1124 : * benefit from using the previous authentication, so this could be
1125 : * optimized in the future.
1126 : */
1127 43 : sme_deauth(wpa_s);
1128 : }
1129 :
1130 :
1131 17 : void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
1132 : union wpa_event_data *data)
1133 : {
1134 17 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
1135 17 : wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1136 17 : wpa_supplicant_mark_disassoc(wpa_s);
1137 17 : }
1138 :
1139 :
1140 1 : void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
1141 : union wpa_event_data *data)
1142 : {
1143 1 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
1144 1 : wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1145 1 : wpa_supplicant_mark_disassoc(wpa_s);
1146 1 : }
1147 :
1148 :
1149 9 : void sme_event_disassoc(struct wpa_supplicant *wpa_s,
1150 : struct disassoc_info *info)
1151 : {
1152 9 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
1153 9 : if (wpa_s->sme.prev_bssid_set) {
1154 : /*
1155 : * cfg80211/mac80211 can get into somewhat confused state if
1156 : * the AP only disassociates us and leaves us in authenticated
1157 : * state. For now, force the state to be cleared to avoid
1158 : * confusing errors if we try to associate with the AP again.
1159 : */
1160 9 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
1161 : "driver state");
1162 9 : wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
1163 : WLAN_REASON_DEAUTH_LEAVING);
1164 : }
1165 9 : }
1166 :
1167 :
1168 0 : static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
1169 : {
1170 0 : struct wpa_supplicant *wpa_s = eloop_ctx;
1171 0 : if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
1172 0 : wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
1173 0 : sme_deauth(wpa_s);
1174 : }
1175 0 : }
1176 :
1177 :
1178 0 : static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
1179 : {
1180 0 : struct wpa_supplicant *wpa_s = eloop_ctx;
1181 0 : if (wpa_s->wpa_state == WPA_ASSOCIATING) {
1182 0 : wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
1183 0 : sme_deauth(wpa_s);
1184 : }
1185 0 : }
1186 :
1187 :
1188 35541 : void sme_state_changed(struct wpa_supplicant *wpa_s)
1189 : {
1190 : /* Make sure timers are cleaned up appropriately. */
1191 35541 : if (wpa_s->wpa_state != WPA_ASSOCIATING)
1192 30711 : eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1193 35541 : if (wpa_s->wpa_state != WPA_AUTHENTICATING)
1194 31023 : eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1195 35541 : }
1196 :
1197 :
1198 7 : void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
1199 : const u8 *prev_pending_bssid)
1200 : {
1201 : /*
1202 : * mac80211-workaround to force deauth on failed auth cmd,
1203 : * requires us to remain in authenticating state to allow the
1204 : * second authentication attempt to be continued properly.
1205 : */
1206 7 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
1207 : "to proceed after disconnection event");
1208 7 : wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
1209 7 : os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
1210 :
1211 : /*
1212 : * Re-arm authentication timer in case auth fails for whatever reason.
1213 : */
1214 7 : eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1215 7 : eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
1216 : NULL);
1217 7 : }
1218 :
1219 :
1220 11041 : void sme_clear_on_disassoc(struct wpa_supplicant *wpa_s)
1221 : {
1222 11041 : wpa_s->sme.prev_bssid_set = 0;
1223 : #ifdef CONFIG_SAE
1224 11041 : wpabuf_free(wpa_s->sme.sae_token);
1225 11041 : wpa_s->sme.sae_token = NULL;
1226 11041 : sae_clear_data(&wpa_s->sme.sae);
1227 : #endif /* CONFIG_SAE */
1228 : #ifdef CONFIG_IEEE80211R
1229 11041 : if (wpa_s->sme.ft_ies)
1230 51 : sme_update_ft_ies(wpa_s, NULL, NULL, 0);
1231 : #endif /* CONFIG_IEEE80211R */
1232 11041 : }
1233 :
1234 :
1235 733 : void sme_deinit(struct wpa_supplicant *wpa_s)
1236 : {
1237 733 : os_free(wpa_s->sme.ft_ies);
1238 733 : wpa_s->sme.ft_ies = NULL;
1239 733 : wpa_s->sme.ft_ies_len = 0;
1240 : #ifdef CONFIG_IEEE80211W
1241 733 : sme_stop_sa_query(wpa_s);
1242 : #endif /* CONFIG_IEEE80211W */
1243 733 : sme_clear_on_disassoc(wpa_s);
1244 :
1245 733 : eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1246 733 : eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1247 733 : eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1248 733 : }
1249 :
1250 :
1251 5 : static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
1252 : const u8 *chan_list, u8 num_channels,
1253 : u8 num_intol)
1254 : {
1255 : struct ieee80211_2040_bss_coex_ie *bc_ie;
1256 : struct ieee80211_2040_intol_chan_report *ic_report;
1257 : struct wpabuf *buf;
1258 :
1259 35 : wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR
1260 : " (num_channels=%u num_intol=%u)",
1261 30 : MAC2STR(wpa_s->bssid), num_channels, num_intol);
1262 5 : wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels",
1263 : chan_list, num_channels);
1264 :
1265 5 : buf = wpabuf_alloc(2 + /* action.category + action_code */
1266 : sizeof(struct ieee80211_2040_bss_coex_ie) +
1267 : sizeof(struct ieee80211_2040_intol_chan_report) +
1268 : num_channels);
1269 5 : if (buf == NULL)
1270 5 : return;
1271 :
1272 5 : wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
1273 5 : wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
1274 :
1275 5 : bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
1276 5 : bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
1277 5 : bc_ie->length = 1;
1278 5 : if (num_intol)
1279 2 : bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
1280 :
1281 5 : if (num_channels > 0) {
1282 4 : ic_report = wpabuf_put(buf, sizeof(*ic_report));
1283 4 : ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
1284 4 : ic_report->length = num_channels + 1;
1285 4 : ic_report->op_class = 0;
1286 4 : os_memcpy(wpabuf_put(buf, num_channels), chan_list,
1287 : num_channels);
1288 : }
1289 :
1290 10 : if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
1291 5 : wpa_s->own_addr, wpa_s->bssid,
1292 5 : wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
1293 0 : wpa_msg(wpa_s, MSG_INFO,
1294 : "SME: Failed to send 20/40 BSS Coexistence frame");
1295 : }
1296 :
1297 5 : wpabuf_free(buf);
1298 : }
1299 :
1300 :
1301 3068 : int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
1302 : {
1303 : struct wpa_bss *bss;
1304 : const u8 *ie;
1305 : u16 ht_cap;
1306 : u8 chan_list[P2P_MAX_CHANNELS], channel;
1307 3068 : u8 num_channels = 0, num_intol = 0, i;
1308 :
1309 3068 : if (!wpa_s->sme.sched_obss_scan)
1310 3063 : return 0;
1311 :
1312 5 : wpa_s->sme.sched_obss_scan = 0;
1313 5 : if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
1314 0 : return 1;
1315 :
1316 : /*
1317 : * Check whether AP uses regulatory triplet or channel triplet in
1318 : * country info. Right now the operating class of the BSS channel
1319 : * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
1320 : * based on the assumption that operating class triplet is not used in
1321 : * beacon frame. If the First Channel Number/Operating Extension
1322 : * Identifier octet has a positive integer value of 201 or greater,
1323 : * then its operating class triplet.
1324 : *
1325 : * TODO: If Supported Operating Classes element is present in beacon
1326 : * frame, have to lookup operating class in Annex E and fill them in
1327 : * 2040 coex frame.
1328 : */
1329 5 : ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
1330 5 : if (ie && (ie[1] >= 6) && (ie[5] >= 201))
1331 0 : return 1;
1332 :
1333 5 : os_memset(chan_list, 0, sizeof(chan_list));
1334 :
1335 14 : dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1336 : /* Skip other band bss */
1337 : enum hostapd_hw_mode mode;
1338 9 : mode = ieee80211_freq_to_chan(bss->freq, &channel);
1339 9 : if (mode != HOSTAPD_MODE_IEEE80211G &&
1340 : mode != HOSTAPD_MODE_IEEE80211B)
1341 0 : continue;
1342 :
1343 9 : ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
1344 9 : ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
1345 63 : wpa_printf(MSG_DEBUG, "SME OBSS scan BSS " MACSTR
1346 : " freq=%u chan=%u ht_cap=0x%x",
1347 54 : MAC2STR(bss->bssid), bss->freq, channel, ht_cap);
1348 :
1349 9 : if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
1350 4 : if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
1351 2 : num_intol++;
1352 :
1353 : /* Check whether the channel is already considered */
1354 4 : for (i = 0; i < num_channels; i++) {
1355 0 : if (channel == chan_list[i])
1356 0 : break;
1357 : }
1358 4 : if (i != num_channels)
1359 0 : continue;
1360 :
1361 4 : chan_list[num_channels++] = channel;
1362 : }
1363 : }
1364 :
1365 5 : sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
1366 5 : return 1;
1367 : }
1368 :
1369 :
1370 5 : static void wpa_obss_scan_freqs_list(struct wpa_supplicant *wpa_s,
1371 : struct wpa_driver_scan_params *params)
1372 : {
1373 : /* Include only affected channels */
1374 : struct hostapd_hw_modes *mode;
1375 : int count, i;
1376 : int start, end;
1377 :
1378 5 : mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
1379 : HOSTAPD_MODE_IEEE80211G);
1380 5 : if (mode == NULL) {
1381 : /* No channels supported in this band - use empty list */
1382 0 : params->freqs = os_zalloc(sizeof(int));
1383 0 : return;
1384 : }
1385 :
1386 9 : if (wpa_s->sme.ht_sec_chan == HT_SEC_CHAN_UNKNOWN &&
1387 4 : wpa_s->current_bss) {
1388 : const u8 *ie;
1389 :
1390 4 : ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_OPERATION);
1391 4 : if (ie && ie[1] >= 2) {
1392 : u8 o;
1393 :
1394 4 : o = ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK;
1395 4 : if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
1396 1 : wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_ABOVE;
1397 3 : else if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
1398 3 : wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_BELOW;
1399 : }
1400 : }
1401 :
1402 5 : start = wpa_s->assoc_freq - 10;
1403 5 : end = wpa_s->assoc_freq + 10;
1404 5 : switch (wpa_s->sme.ht_sec_chan) {
1405 : case HT_SEC_CHAN_UNKNOWN:
1406 : /* HT40+ possible on channels 1..9 */
1407 0 : if (wpa_s->assoc_freq <= 2452)
1408 0 : start -= 20;
1409 : /* HT40- possible on channels 5-13 */
1410 0 : if (wpa_s->assoc_freq >= 2432)
1411 0 : end += 20;
1412 0 : break;
1413 : case HT_SEC_CHAN_ABOVE:
1414 1 : end += 20;
1415 1 : break;
1416 : case HT_SEC_CHAN_BELOW:
1417 4 : start -= 20;
1418 4 : break;
1419 : }
1420 5 : wpa_printf(MSG_DEBUG,
1421 : "OBSS: assoc_freq %d possible affected range %d-%d",
1422 : wpa_s->assoc_freq, start, end);
1423 :
1424 5 : params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
1425 5 : if (params->freqs == NULL)
1426 0 : return;
1427 75 : for (count = 0, i = 0; i < mode->num_channels; i++) {
1428 : int freq;
1429 :
1430 70 : if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
1431 0 : continue;
1432 70 : freq = mode->channels[i].freq;
1433 70 : if (freq - 10 >= end || freq + 10 <= start)
1434 23 : continue; /* not affected */
1435 47 : params->freqs[count++] = freq;
1436 : }
1437 : }
1438 :
1439 :
1440 5 : static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1441 : {
1442 5 : struct wpa_supplicant *wpa_s = eloop_ctx;
1443 : struct wpa_driver_scan_params params;
1444 :
1445 5 : if (!wpa_s->current_bss) {
1446 0 : wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
1447 5 : return;
1448 : }
1449 :
1450 5 : os_memset(¶ms, 0, sizeof(params));
1451 5 : wpa_obss_scan_freqs_list(wpa_s, ¶ms);
1452 5 : params.low_priority = 1;
1453 5 : wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
1454 :
1455 5 : if (wpa_supplicant_trigger_scan(wpa_s, ¶ms))
1456 0 : wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
1457 : else
1458 5 : wpa_s->sme.sched_obss_scan = 1;
1459 5 : os_free(params.freqs);
1460 :
1461 5 : eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1462 : sme_obss_scan_timeout, wpa_s, NULL);
1463 : }
1464 :
1465 :
1466 27130 : void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
1467 : {
1468 : const u8 *ie;
1469 27130 : struct wpa_bss *bss = wpa_s->current_bss;
1470 27130 : struct wpa_ssid *ssid = wpa_s->current_ssid;
1471 27130 : struct hostapd_hw_modes *hw_mode = NULL;
1472 : int i;
1473 :
1474 27130 : eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1475 27130 : wpa_s->sme.sched_obss_scan = 0;
1476 27130 : wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_UNKNOWN;
1477 27130 : if (!enable)
1478 23476 : return;
1479 :
1480 : /*
1481 : * Schedule OBSS scan if driver is using station SME in wpa_supplicant
1482 : * or it expects OBSS scan to be performed by wpa_supplicant.
1483 : */
1484 3934 : if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
1485 3654 : (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
1486 3374 : ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA)
1487 912 : return;
1488 :
1489 2742 : if (!wpa_s->hw.modes)
1490 0 : return;
1491 :
1492 : /* only HT caps in 11g mode are relevant */
1493 2742 : for (i = 0; i < wpa_s->hw.num_modes; i++) {
1494 2742 : hw_mode = &wpa_s->hw.modes[i];
1495 2742 : if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
1496 2742 : break;
1497 : }
1498 :
1499 : /* Driver does not support HT40 for 11g or doesn't have 11g. */
1500 5484 : if (i == wpa_s->hw.num_modes || !hw_mode ||
1501 2742 : !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1502 0 : return;
1503 :
1504 2742 : if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
1505 75 : return; /* Not associated on 2.4 GHz band */
1506 :
1507 : /* Check whether AP supports HT40 */
1508 2667 : ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
1509 5301 : if (!ie || ie[1] < 2 ||
1510 2634 : !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1511 2644 : return; /* AP does not support HT40 */
1512 :
1513 23 : ie = wpa_bss_get_ie(wpa_s->current_bss,
1514 : WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
1515 23 : if (!ie || ie[1] < 14)
1516 18 : return; /* AP does not request OBSS scans */
1517 :
1518 5 : wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
1519 5 : if (wpa_s->sme.obss_scan_int < 10) {
1520 2 : wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
1521 : "replaced with the minimum 10 sec",
1522 2 : wpa_s->sme.obss_scan_int);
1523 2 : wpa_s->sme.obss_scan_int = 10;
1524 : }
1525 5 : wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
1526 5 : wpa_s->sme.obss_scan_int);
1527 5 : eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1528 : sme_obss_scan_timeout, wpa_s, NULL);
1529 : }
1530 :
1531 :
1532 : #ifdef CONFIG_IEEE80211W
1533 :
1534 : static const unsigned int sa_query_max_timeout = 1000;
1535 : static const unsigned int sa_query_retry_timeout = 201;
1536 :
1537 5 : static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
1538 : {
1539 : u32 tu;
1540 : struct os_reltime now, passed;
1541 5 : os_get_reltime(&now);
1542 5 : os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed);
1543 5 : tu = (passed.sec * 1000000 + passed.usec) / 1024;
1544 5 : if (sa_query_max_timeout < tu) {
1545 1 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
1546 1 : sme_stop_sa_query(wpa_s);
1547 1 : wpa_supplicant_deauthenticate(
1548 : wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
1549 1 : return 1;
1550 : }
1551 :
1552 4 : return 0;
1553 : }
1554 :
1555 :
1556 8 : static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
1557 : const u8 *trans_id)
1558 : {
1559 : u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN];
1560 8 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
1561 : MACSTR, MAC2STR(wpa_s->bssid));
1562 8 : wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
1563 : trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1564 8 : req[0] = WLAN_ACTION_SA_QUERY;
1565 8 : req[1] = WLAN_SA_QUERY_REQUEST;
1566 8 : os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1567 8 : if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
1568 8 : wpa_s->own_addr, wpa_s->bssid,
1569 : req, sizeof(req), 0) < 0)
1570 0 : wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
1571 : "Request");
1572 8 : }
1573 :
1574 :
1575 11 : static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
1576 : {
1577 11 : struct wpa_supplicant *wpa_s = eloop_ctx;
1578 : unsigned int timeout, sec, usec;
1579 : u8 *trans_id, *nbuf;
1580 :
1581 16 : if (wpa_s->sme.sa_query_count > 0 &&
1582 5 : sme_check_sa_query_timeout(wpa_s))
1583 1 : return;
1584 :
1585 10 : nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
1586 10 : wpa_s->sme.sa_query_count + 1,
1587 : WLAN_SA_QUERY_TR_ID_LEN);
1588 10 : if (nbuf == NULL) {
1589 1 : sme_stop_sa_query(wpa_s);
1590 1 : return;
1591 : }
1592 9 : if (wpa_s->sme.sa_query_count == 0) {
1593 : /* Starting a new SA Query procedure */
1594 5 : os_get_reltime(&wpa_s->sme.sa_query_start);
1595 : }
1596 9 : trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
1597 9 : wpa_s->sme.sa_query_trans_id = nbuf;
1598 9 : wpa_s->sme.sa_query_count++;
1599 :
1600 9 : if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) {
1601 1 : wpa_printf(MSG_DEBUG, "Could not generate SA Query ID");
1602 1 : sme_stop_sa_query(wpa_s);
1603 1 : return;
1604 : }
1605 :
1606 8 : timeout = sa_query_retry_timeout;
1607 8 : sec = ((timeout / 1000) * 1024) / 1000;
1608 8 : usec = (timeout % 1000) * 1024;
1609 8 : eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
1610 :
1611 8 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
1612 : wpa_s->sme.sa_query_count);
1613 :
1614 8 : sme_send_sa_query_req(wpa_s, trans_id);
1615 : }
1616 :
1617 :
1618 6 : static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
1619 : {
1620 6 : sme_sa_query_timer(wpa_s, NULL);
1621 6 : }
1622 :
1623 :
1624 739 : static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
1625 : {
1626 739 : eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
1627 739 : os_free(wpa_s->sme.sa_query_trans_id);
1628 739 : wpa_s->sme.sa_query_trans_id = NULL;
1629 739 : wpa_s->sme.sa_query_count = 0;
1630 739 : }
1631 :
1632 :
1633 40 : void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
1634 : const u8 *da, u16 reason_code)
1635 : {
1636 : struct wpa_ssid *ssid;
1637 : struct os_reltime now;
1638 :
1639 40 : if (wpa_s->wpa_state != WPA_COMPLETED)
1640 34 : return;
1641 40 : ssid = wpa_s->current_ssid;
1642 40 : if (wpas_get_ssid_pmf(wpa_s, ssid) == NO_MGMT_FRAME_PROTECTION)
1643 0 : return;
1644 40 : if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1645 0 : return;
1646 40 : if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
1647 : reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
1648 4 : return;
1649 36 : if (wpa_s->sme.sa_query_count > 0)
1650 6 : return;
1651 :
1652 30 : os_get_reltime(&now);
1653 55 : if (wpa_s->sme.last_unprot_disconnect.sec &&
1654 25 : !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10))
1655 24 : return; /* limit SA Query procedure frequency */
1656 6 : wpa_s->sme.last_unprot_disconnect = now;
1657 :
1658 6 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
1659 : "possible AP/STA state mismatch - trigger SA Query");
1660 6 : sme_start_sa_query(wpa_s);
1661 : }
1662 :
1663 :
1664 3 : void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
1665 : const u8 *data, size_t len)
1666 : {
1667 : int i;
1668 :
1669 3 : if (wpa_s->sme.sa_query_trans_id == NULL ||
1670 3 : len < 1 + WLAN_SA_QUERY_TR_ID_LEN ||
1671 3 : data[0] != WLAN_SA_QUERY_RESPONSE)
1672 0 : return;
1673 3 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
1674 : MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
1675 :
1676 3 : if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1677 0 : return;
1678 :
1679 3 : for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
1680 3 : if (os_memcmp(wpa_s->sme.sa_query_trans_id +
1681 : i * WLAN_SA_QUERY_TR_ID_LEN,
1682 : data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
1683 3 : break;
1684 : }
1685 :
1686 3 : if (i >= wpa_s->sme.sa_query_count) {
1687 0 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
1688 : "transaction identifier found");
1689 0 : return;
1690 : }
1691 :
1692 3 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
1693 : "from " MACSTR, MAC2STR(sa));
1694 3 : sme_stop_sa_query(wpa_s);
1695 : }
1696 :
1697 : #endif /* CONFIG_IEEE80211W */
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