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 38 : static int index_within_array(const int *array, int idx)
46 : {
47 : int i;
48 50 : for (i = 0; i < idx; i++) {
49 12 : if (array[i] <= 0)
50 0 : return 0;
51 : }
52 38 : return 1;
53 : }
54 :
55 :
56 38 : static int sme_set_sae_group(struct wpa_supplicant *wpa_s)
57 : {
58 38 : int *groups = wpa_s->conf->sae_groups;
59 38 : int default_groups[] = { 19, 20, 21, 25, 26, 0 };
60 :
61 38 : if (!groups || groups[0] <= 0)
62 21 : groups = default_groups;
63 :
64 : /* Configuration may have changed, so validate current index */
65 38 : if (!index_within_array(groups, wpa_s->sme.sae_group_index))
66 0 : return -1;
67 :
68 : for (;;) {
69 38 : int group = groups[wpa_s->sme.sae_group_index];
70 38 : if (group < 0)
71 0 : break;
72 38 : if (sae_set_group(&wpa_s->sme.sae, group) == 0) {
73 38 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected SAE group %d",
74 : wpa_s->sme.sae.group);
75 38 : return 0;
76 : }
77 0 : wpa_s->sme.sae_group_index++;
78 0 : }
79 :
80 0 : return -1;
81 : }
82 :
83 :
84 39 : 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 39 : if (ssid->passphrase == NULL) {
92 4 : wpa_printf(MSG_DEBUG, "SAE: No password available");
93 4 : return NULL;
94 : }
95 :
96 35 : if (sme_set_sae_group(wpa_s) < 0) {
97 0 : wpa_printf(MSG_DEBUG, "SAE: Failed to select group");
98 0 : return NULL;
99 : }
100 :
101 105 : if (sae_prepare_commit(wpa_s->own_addr, bssid,
102 35 : (u8 *) ssid->passphrase,
103 35 : os_strlen(ssid->passphrase),
104 : &wpa_s->sme.sae) < 0) {
105 0 : wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE");
106 0 : return NULL;
107 : }
108 :
109 35 : len = wpa_s->sme.sae_token ? wpabuf_len(wpa_s->sme.sae_token) : 0;
110 35 : buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + len);
111 35 : if (buf == NULL)
112 0 : return NULL;
113 :
114 35 : wpabuf_put_le16(buf, 1); /* Transaction seq# */
115 35 : wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
116 35 : sae_write_commit(&wpa_s->sme.sae, buf, wpa_s->sme.sae_token);
117 :
118 35 : return buf;
119 : }
120 :
121 :
122 27 : static struct wpabuf * sme_auth_build_sae_confirm(struct wpa_supplicant *wpa_s)
123 : {
124 : struct wpabuf *buf;
125 :
126 27 : buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN);
127 27 : if (buf == NULL)
128 0 : return NULL;
129 :
130 27 : wpabuf_put_le16(buf, 2); /* Transaction seq# */
131 27 : wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
132 27 : sae_write_confirm(&wpa_s->sme.sae, buf);
133 :
134 27 : 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 2498 : static void sme_auth_handle_rrm(struct wpa_supplicant *wpa_s,
146 : struct wpa_bss *bss)
147 : {
148 2498 : const u8 rrm_ie_len = 5;
149 : u8 *pos;
150 : const u8 *rrm_ie;
151 :
152 2498 : wpa_s->rrm.rrm_used = 0;
153 :
154 2498 : wpa_printf(MSG_DEBUG,
155 : "RRM: Determining whether RRM can be used - device support: 0x%x",
156 : wpa_s->drv_rrm_flags);
157 :
158 2498 : rrm_ie = wpa_bss_get_ie(bss, WLAN_EID_RRM_ENABLED_CAPABILITIES);
159 2498 : if (!rrm_ie || !(bss->caps & IEEE80211_CAP_RRM)) {
160 2497 : wpa_printf(MSG_DEBUG, "RRM: No RRM in network");
161 2497 : return;
162 : }
163 :
164 1 : if (!(wpa_s->drv_rrm_flags &
165 1 : WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) ||
166 1 : !(wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET)) {
167 0 : wpa_printf(MSG_DEBUG,
168 : "RRM: Insufficient RRM support in driver - do not use RRM");
169 0 : return;
170 : }
171 :
172 1 : if (sizeof(wpa_s->sme.assoc_req_ie) <
173 1 : wpa_s->sme.assoc_req_ie_len + rrm_ie_len + 2) {
174 0 : wpa_printf(MSG_INFO,
175 : "RRM: Unable to use RRM, no room for RRM IE");
176 0 : return;
177 : }
178 :
179 1 : wpa_printf(MSG_DEBUG, "RRM: Adding RRM IE to Association Request");
180 1 : pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
181 1 : os_memset(pos, 0, 2 + rrm_ie_len);
182 1 : *pos++ = WLAN_EID_RRM_ENABLED_CAPABILITIES;
183 1 : *pos++ = rrm_ie_len;
184 :
185 : /* Set supported capabilites flags */
186 1 : if (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION)
187 0 : *pos |= WLAN_RRM_CAPS_LINK_MEASUREMENT;
188 :
189 1 : wpa_s->sme.assoc_req_ie_len += rrm_ie_len + 2;
190 1 : wpa_s->rrm.rrm_used = 1;
191 : }
192 :
193 :
194 2503 : static void sme_send_authentication(struct wpa_supplicant *wpa_s,
195 : struct wpa_bss *bss, struct wpa_ssid *ssid,
196 : int start)
197 : {
198 : struct wpa_driver_auth_params params;
199 : struct wpa_ssid *old_ssid;
200 : #ifdef CONFIG_IEEE80211R
201 : const u8 *ie;
202 : #endif /* CONFIG_IEEE80211R */
203 : #ifdef CONFIG_IEEE80211R
204 2503 : const u8 *md = NULL;
205 : #endif /* CONFIG_IEEE80211R */
206 : int i, bssid_changed;
207 2503 : struct wpabuf *resp = NULL;
208 : u8 ext_capab[18];
209 : int ext_capab_len;
210 : int skip_auth;
211 :
212 2503 : if (bss == NULL) {
213 0 : wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for "
214 : "the network");
215 0 : wpas_connect_work_done(wpa_s);
216 0 : return;
217 : }
218 :
219 2506 : skip_auth = wpa_s->conf->reassoc_same_bss_optim &&
220 3 : wpa_s->reassoc_same_bss;
221 2503 : wpa_s->current_bss = bss;
222 :
223 2503 : os_memset(¶ms, 0, sizeof(params));
224 2503 : wpa_s->reassociate = 0;
225 :
226 2503 : params.freq = bss->freq;
227 2503 : params.bssid = bss->bssid;
228 2503 : params.ssid = bss->ssid;
229 2503 : params.ssid_len = bss->ssid_len;
230 2503 : params.p2p = ssid->p2p_group;
231 :
232 4375 : if (wpa_s->sme.ssid_len != params.ssid_len ||
233 1872 : os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
234 754 : wpa_s->sme.prev_bssid_set = 0;
235 :
236 2503 : wpa_s->sme.freq = params.freq;
237 2503 : os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
238 2503 : wpa_s->sme.ssid_len = params.ssid_len;
239 :
240 2503 : params.auth_alg = WPA_AUTH_ALG_OPEN;
241 : #ifdef IEEE8021X_EAPOL
242 2503 : if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
243 10 : if (ssid->leap) {
244 0 : if (ssid->non_leap == 0)
245 0 : params.auth_alg = WPA_AUTH_ALG_LEAP;
246 : else
247 0 : params.auth_alg |= WPA_AUTH_ALG_LEAP;
248 : }
249 : }
250 : #endif /* IEEE8021X_EAPOL */
251 2503 : wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
252 : params.auth_alg);
253 2503 : if (ssid->auth_alg) {
254 267 : params.auth_alg = ssid->auth_alg;
255 267 : wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
256 : "0x%x", params.auth_alg);
257 : }
258 : #ifdef CONFIG_SAE
259 2503 : wpa_s->sme.sae_pmksa_caching = 0;
260 2503 : if (wpa_key_mgmt_sae(ssid->key_mgmt)) {
261 : const u8 *rsn;
262 : struct wpa_ie_data ied;
263 :
264 70 : rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
265 70 : if (!rsn) {
266 0 : wpa_dbg(wpa_s, MSG_DEBUG,
267 : "SAE enabled, but target BSS does not advertise RSN");
268 140 : } else if (wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 &&
269 70 : wpa_key_mgmt_sae(ied.key_mgmt)) {
270 70 : wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg");
271 70 : params.auth_alg = WPA_AUTH_ALG_SAE;
272 : } else {
273 0 : wpa_dbg(wpa_s, MSG_DEBUG,
274 : "SAE enabled, but target BSS does not advertise SAE AKM for RSN");
275 : }
276 : }
277 : #endif /* CONFIG_SAE */
278 :
279 12515 : for (i = 0; i < NUM_WEP_KEYS; i++) {
280 10012 : if (ssid->wep_key_len[i])
281 26 : params.wep_key[i] = ssid->wep_key[i];
282 10012 : params.wep_key_len[i] = ssid->wep_key_len[i];
283 : }
284 2503 : params.wep_tx_keyidx = ssid->wep_tx_keyidx;
285 :
286 2503 : bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
287 2503 : os_memset(wpa_s->bssid, 0, ETH_ALEN);
288 2503 : os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
289 2503 : if (bssid_changed)
290 266 : wpas_notify_bssid_changed(wpa_s);
291 :
292 4943 : if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
293 4577 : wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
294 3994 : wpa_key_mgmt_wpa(ssid->key_mgmt)) {
295 : int try_opportunistic;
296 3724 : try_opportunistic = (ssid->proactive_key_caching < 0 ?
297 1844 : wpa_s->conf->okc :
298 3724 : ssid->proactive_key_caching) &&
299 18 : (ssid->proto & WPA_PROTO_RSN);
300 1862 : if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
301 1862 : wpa_s->current_ssid,
302 : try_opportunistic) == 0)
303 70 : eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
304 1862 : wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
305 3724 : if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
306 1862 : wpa_s->sme.assoc_req_ie,
307 : &wpa_s->sme.assoc_req_ie_len)) {
308 5 : wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
309 : "key management and encryption suites");
310 5 : wpas_connect_work_done(wpa_s);
311 5 : return;
312 : }
313 651 : } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
314 10 : wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) {
315 : /*
316 : * Both WPA and non-WPA IEEE 802.1X enabled in configuration -
317 : * use non-WPA since the scan results did not indicate that the
318 : * AP is using WPA or WPA2.
319 : */
320 0 : wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
321 0 : wpa_s->sme.assoc_req_ie_len = 0;
322 641 : } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
323 1 : wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
324 2 : if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
325 1 : wpa_s->sme.assoc_req_ie,
326 : &wpa_s->sme.assoc_req_ie_len)) {
327 0 : wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
328 : "key management and encryption suites (no "
329 : "scan results)");
330 0 : wpas_connect_work_done(wpa_s);
331 0 : return;
332 : }
333 : #ifdef CONFIG_WPS
334 640 : } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
335 : struct wpabuf *wps_ie;
336 290 : wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
337 290 : if (wps_ie && wpabuf_len(wps_ie) <=
338 : sizeof(wpa_s->sme.assoc_req_ie)) {
339 290 : wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
340 290 : os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
341 : wpa_s->sme.assoc_req_ie_len);
342 : } else
343 0 : wpa_s->sme.assoc_req_ie_len = 0;
344 290 : wpabuf_free(wps_ie);
345 290 : wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
346 : #endif /* CONFIG_WPS */
347 : } else {
348 350 : wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
349 350 : wpa_s->sme.assoc_req_ie_len = 0;
350 : }
351 :
352 : #ifdef CONFIG_IEEE80211R
353 2498 : ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
354 2498 : if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
355 149 : md = ie + 2;
356 2498 : wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
357 2498 : if (md) {
358 : /* Prepare for the next transition */
359 149 : wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
360 : }
361 :
362 2498 : if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) {
363 141 : if (wpa_s->sme.assoc_req_ie_len + 5 <
364 : sizeof(wpa_s->sme.assoc_req_ie)) {
365 : struct rsn_mdie *mdie;
366 141 : u8 *pos = wpa_s->sme.assoc_req_ie +
367 141 : wpa_s->sme.assoc_req_ie_len;
368 141 : *pos++ = WLAN_EID_MOBILITY_DOMAIN;
369 141 : *pos++ = sizeof(*mdie);
370 141 : mdie = (struct rsn_mdie *) pos;
371 141 : os_memcpy(mdie->mobility_domain, md,
372 : MOBILITY_DOMAIN_ID_LEN);
373 141 : mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
374 141 : wpa_s->sme.assoc_req_ie_len += 5;
375 : }
376 :
377 254 : if (wpa_s->sme.ft_used &&
378 226 : os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
379 113 : wpa_sm_has_ptk(wpa_s->wpa)) {
380 113 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT "
381 : "over-the-air");
382 113 : params.auth_alg = WPA_AUTH_ALG_FT;
383 113 : params.ie = wpa_s->sme.ft_ies;
384 113 : params.ie_len = wpa_s->sme.ft_ies_len;
385 : }
386 : }
387 : #endif /* CONFIG_IEEE80211R */
388 :
389 : #ifdef CONFIG_IEEE80211W
390 2498 : wpa_s->sme.mfp = wpas_get_ssid_pmf(wpa_s, ssid);
391 2498 : if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) {
392 342 : const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
393 : struct wpa_ie_data _ie;
394 684 : if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
395 342 : _ie.capabilities &
396 : (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
397 46 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports "
398 : "MFP: require MFP");
399 46 : wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
400 : }
401 : }
402 : #endif /* CONFIG_IEEE80211W */
403 :
404 : #ifdef CONFIG_P2P
405 2498 : if (wpa_s->global->p2p) {
406 : u8 *pos;
407 : size_t len;
408 : int res;
409 2498 : pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
410 2498 : len = sizeof(wpa_s->sme.assoc_req_ie) -
411 2498 : wpa_s->sme.assoc_req_ie_len;
412 2498 : res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
413 : ssid->p2p_group);
414 2498 : if (res >= 0)
415 2492 : wpa_s->sme.assoc_req_ie_len += res;
416 : }
417 : #endif /* CONFIG_P2P */
418 :
419 : #ifdef CONFIG_HS20
420 2498 : if (is_hs20_network(wpa_s, ssid, bss)) {
421 : struct wpabuf *hs20;
422 90 : hs20 = wpabuf_alloc(20);
423 90 : if (hs20) {
424 90 : int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid);
425 : size_t len;
426 :
427 90 : wpas_hs20_add_indication(hs20, pps_mo_id);
428 90 : len = sizeof(wpa_s->sme.assoc_req_ie) -
429 90 : wpa_s->sme.assoc_req_ie_len;
430 90 : if (wpabuf_len(hs20) <= len) {
431 90 : os_memcpy(wpa_s->sme.assoc_req_ie +
432 : wpa_s->sme.assoc_req_ie_len,
433 : wpabuf_head(hs20), wpabuf_len(hs20));
434 90 : wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
435 : }
436 90 : wpabuf_free(hs20);
437 : }
438 : }
439 : #endif /* CONFIG_HS20 */
440 :
441 2498 : ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab,
442 : sizeof(ext_capab));
443 2498 : if (ext_capab_len > 0) {
444 2498 : u8 *pos = wpa_s->sme.assoc_req_ie;
445 2498 : if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
446 1839 : pos += 2 + pos[1];
447 2498 : os_memmove(pos + ext_capab_len, pos,
448 : wpa_s->sme.assoc_req_ie_len -
449 : (pos - wpa_s->sme.assoc_req_ie));
450 2498 : wpa_s->sme.assoc_req_ie_len += ext_capab_len;
451 2498 : os_memcpy(pos, ext_capab, ext_capab_len);
452 : }
453 :
454 2498 : if (wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]) {
455 1 : struct wpabuf *buf = wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ];
456 : size_t len;
457 :
458 1 : len = sizeof(wpa_s->sme.assoc_req_ie) -
459 1 : wpa_s->sme.assoc_req_ie_len;
460 1 : if (wpabuf_len(buf) <= len) {
461 1 : os_memcpy(wpa_s->sme.assoc_req_ie +
462 : wpa_s->sme.assoc_req_ie_len,
463 : wpabuf_head(buf), wpabuf_len(buf));
464 1 : wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf);
465 : }
466 : }
467 :
468 2498 : sme_auth_handle_rrm(wpa_s, bss);
469 :
470 : #ifdef CONFIG_SAE
471 2566 : if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE &&
472 68 : pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, ssid, 0) == 0)
473 : {
474 2 : wpa_dbg(wpa_s, MSG_DEBUG,
475 : "PMKSA cache entry found - try to use PMKSA caching instead of new SAE authentication");
476 2 : params.auth_alg = WPA_AUTH_ALG_OPEN;
477 2 : wpa_s->sme.sae_pmksa_caching = 1;
478 : }
479 :
480 2498 : if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE) {
481 66 : if (start)
482 39 : resp = sme_auth_build_sae_commit(wpa_s, ssid,
483 39 : bss->bssid);
484 : else
485 27 : resp = sme_auth_build_sae_confirm(wpa_s);
486 66 : if (resp == NULL) {
487 4 : wpas_connection_failed(wpa_s, bss->bssid);
488 4 : return;
489 : }
490 62 : params.sae_data = wpabuf_head(resp);
491 62 : params.sae_data_len = wpabuf_len(resp);
492 62 : wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED;
493 : }
494 : #endif /* CONFIG_SAE */
495 :
496 2494 : wpa_supplicant_cancel_sched_scan(wpa_s);
497 2494 : wpa_supplicant_cancel_scan(wpa_s);
498 :
499 17458 : wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
500 14964 : " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
501 : wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
502 :
503 2494 : wpa_clear_keys(wpa_s, bss->bssid);
504 2494 : wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
505 2494 : old_ssid = wpa_s->current_ssid;
506 2494 : wpa_s->current_ssid = ssid;
507 2494 : wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
508 2494 : wpa_supplicant_initiate_eapol(wpa_s);
509 2494 : if (old_ssid != wpa_s->current_ssid)
510 790 : wpas_notify_network_changed(wpa_s);
511 :
512 : #ifdef CONFIG_P2P
513 : /*
514 : * If multi-channel concurrency is not supported, check for any
515 : * frequency conflict. In case of any frequency conflict, remove the
516 : * least prioritized connection.
517 : */
518 2494 : if (wpa_s->num_multichan_concurrent < 2) {
519 : int freq, num;
520 2485 : num = get_shared_radio_freqs(wpa_s, &freq, 1);
521 2485 : if (num > 0 && freq > 0 && freq != params.freq) {
522 1 : wpa_printf(MSG_DEBUG,
523 : "Conflicting frequency found (%d != %d)",
524 : freq, params.freq);
525 1 : if (wpas_p2p_handle_frequency_conflicts(wpa_s,
526 : params.freq,
527 : ssid) < 0) {
528 0 : wpas_connection_failed(wpa_s, bss->bssid);
529 0 : wpa_supplicant_mark_disassoc(wpa_s);
530 0 : wpabuf_free(resp);
531 0 : wpas_connect_work_done(wpa_s);
532 0 : return;
533 : }
534 : }
535 : }
536 : #endif /* CONFIG_P2P */
537 :
538 2494 : if (skip_auth) {
539 2 : wpa_msg(wpa_s, MSG_DEBUG,
540 : "SME: Skip authentication step on reassoc-to-same-BSS");
541 2 : wpabuf_free(resp);
542 2 : sme_associate(wpa_s, ssid->mode, bss->bssid, WLAN_AUTH_OPEN);
543 2 : return;
544 : }
545 :
546 :
547 2492 : wpa_s->sme.auth_alg = params.auth_alg;
548 2492 : if (wpa_drv_authenticate(wpa_s, ¶ms) < 0) {
549 0 : wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
550 : "driver failed");
551 0 : wpas_connection_failed(wpa_s, bss->bssid);
552 0 : wpa_supplicant_mark_disassoc(wpa_s);
553 0 : wpabuf_free(resp);
554 0 : wpas_connect_work_done(wpa_s);
555 0 : return;
556 : }
557 :
558 2492 : eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
559 : NULL);
560 :
561 : /*
562 : * Association will be started based on the authentication event from
563 : * the driver.
564 : */
565 :
566 2492 : wpabuf_free(resp);
567 : }
568 :
569 :
570 2470 : static void sme_auth_start_cb(struct wpa_radio_work *work, int deinit)
571 : {
572 2470 : struct wpa_connect_work *cwork = work->ctx;
573 2470 : struct wpa_supplicant *wpa_s = work->wpa_s;
574 :
575 2470 : if (deinit) {
576 1 : if (work->started)
577 0 : wpa_s->connect_work = NULL;
578 :
579 1 : wpas_connect_work_free(cwork);
580 1 : return;
581 : }
582 :
583 2469 : wpa_s->connect_work = work;
584 :
585 4937 : if (cwork->bss_removed ||
586 2468 : !wpas_valid_bss_ssid(wpa_s, cwork->bss, cwork->ssid)) {
587 1 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt");
588 1 : wpas_connect_work_done(wpa_s);
589 1 : return;
590 : }
591 :
592 2468 : sme_send_authentication(wpa_s, cwork->bss, cwork->ssid, 1);
593 : }
594 :
595 :
596 2472 : void sme_authenticate(struct wpa_supplicant *wpa_s,
597 : struct wpa_bss *bss, struct wpa_ssid *ssid)
598 : {
599 : struct wpa_connect_work *cwork;
600 :
601 2472 : if (bss == NULL || ssid == NULL)
602 2 : return;
603 2470 : if (wpa_s->connect_work) {
604 0 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reject sme_authenticate() call since connect_work exist");
605 0 : return;
606 : }
607 :
608 2470 : if (radio_work_pending(wpa_s, "sme-connect")) {
609 : /*
610 : * The previous sme-connect work might no longer be valid due to
611 : * the fact that the BSS list was updated. In addition, it makes
612 : * sense to adhere to the 'newer' decision.
613 : */
614 0 : wpa_dbg(wpa_s, MSG_DEBUG,
615 : "SME: Remove previous pending sme-connect");
616 0 : radio_remove_works(wpa_s, "sme-connect", 0);
617 : }
618 :
619 2470 : cwork = os_zalloc(sizeof(*cwork));
620 2470 : if (cwork == NULL)
621 0 : return;
622 2470 : cwork->bss = bss;
623 2470 : cwork->ssid = ssid;
624 2470 : cwork->sme = 1;
625 :
626 : #ifdef CONFIG_SAE
627 2470 : wpa_s->sme.sae.state = SAE_NOTHING;
628 2470 : wpa_s->sme.sae.send_confirm = 0;
629 2470 : wpa_s->sme.sae_group_index = 0;
630 : #endif /* CONFIG_SAE */
631 :
632 2470 : if (radio_add_work(wpa_s, bss->freq, "sme-connect", 1,
633 : sme_auth_start_cb, cwork) < 0)
634 0 : wpas_connect_work_free(cwork);
635 : }
636 :
637 :
638 : #ifdef CONFIG_SAE
639 :
640 62 : static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
641 : u16 status_code, const u8 *data, size_t len)
642 : {
643 : int *groups;
644 :
645 62 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
646 : "status code %u", auth_transaction, status_code);
647 :
648 62 : if (auth_transaction == 1 &&
649 5 : status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
650 10 : wpa_s->sme.sae.state == SAE_COMMITTED &&
651 10 : wpa_s->current_bss && wpa_s->current_ssid) {
652 5 : int default_groups[] = { 19, 20, 21, 25, 26, 0 };
653 : u16 group;
654 :
655 5 : groups = wpa_s->conf->sae_groups;
656 5 : if (!groups || groups[0] <= 0)
657 5 : groups = default_groups;
658 :
659 5 : if (len < sizeof(le16)) {
660 0 : wpa_dbg(wpa_s, MSG_DEBUG,
661 : "SME: Too short SAE anti-clogging token request");
662 0 : return -1;
663 : }
664 5 : group = WPA_GET_LE16(data);
665 5 : wpa_dbg(wpa_s, MSG_DEBUG,
666 : "SME: SAE anti-clogging token requested (group %u)",
667 : group);
668 5 : if (sae_group_allowed(&wpa_s->sme.sae, groups, group) !=
669 : WLAN_STATUS_SUCCESS) {
670 0 : wpa_dbg(wpa_s, MSG_ERROR,
671 : "SME: SAE group %u of anti-clogging request is invalid",
672 : group);
673 0 : return -1;
674 : }
675 5 : wpabuf_free(wpa_s->sme.sae_token);
676 5 : wpa_s->sme.sae_token = wpabuf_alloc_copy(data + sizeof(le16),
677 : len - sizeof(le16));
678 5 : sme_send_authentication(wpa_s, wpa_s->current_bss,
679 : wpa_s->current_ssid, 1);
680 5 : return 0;
681 : }
682 :
683 57 : if (auth_transaction == 1 &&
684 3 : status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
685 6 : wpa_s->sme.sae.state == SAE_COMMITTED &&
686 6 : wpa_s->current_bss && wpa_s->current_ssid) {
687 3 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
688 3 : wpa_s->sme.sae_group_index++;
689 3 : if (sme_set_sae_group(wpa_s) < 0)
690 0 : return -1; /* no other groups enabled */
691 3 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
692 3 : sme_send_authentication(wpa_s, wpa_s->current_bss,
693 : wpa_s->current_ssid, 1);
694 3 : return 0;
695 : }
696 :
697 54 : if (status_code != WLAN_STATUS_SUCCESS)
698 0 : return -1;
699 :
700 54 : if (auth_transaction == 1) {
701 27 : groups = wpa_s->conf->sae_groups;
702 :
703 27 : wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
704 54 : if (wpa_s->current_bss == NULL ||
705 27 : wpa_s->current_ssid == NULL)
706 0 : return -1;
707 27 : if (wpa_s->sme.sae.state != SAE_COMMITTED)
708 0 : return -1;
709 27 : if (groups && groups[0] <= 0)
710 16 : groups = NULL;
711 27 : if (sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
712 : groups) != WLAN_STATUS_SUCCESS)
713 0 : return -1;
714 :
715 27 : if (sae_process_commit(&wpa_s->sme.sae) < 0) {
716 0 : wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
717 : "commit");
718 0 : return -1;
719 : }
720 :
721 27 : wpabuf_free(wpa_s->sme.sae_token);
722 27 : wpa_s->sme.sae_token = NULL;
723 27 : sme_send_authentication(wpa_s, wpa_s->current_bss,
724 : wpa_s->current_ssid, 0);
725 27 : return 0;
726 27 : } else if (auth_transaction == 2) {
727 27 : wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
728 27 : if (wpa_s->sme.sae.state != SAE_CONFIRMED)
729 0 : return -1;
730 27 : if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
731 0 : return -1;
732 27 : wpa_s->sme.sae.state = SAE_ACCEPTED;
733 27 : sae_clear_temp_data(&wpa_s->sme.sae);
734 27 : return 1;
735 : }
736 :
737 0 : return -1;
738 : }
739 : #endif /* CONFIG_SAE */
740 :
741 :
742 2474 : void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
743 : {
744 2474 : struct wpa_ssid *ssid = wpa_s->current_ssid;
745 :
746 2474 : if (ssid == NULL) {
747 6 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
748 : "when network is not selected");
749 6 : return;
750 : }
751 :
752 2468 : if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
753 0 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
754 : "when not in authenticating state");
755 0 : return;
756 : }
757 :
758 2468 : if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
759 0 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
760 : "unexpected peer " MACSTR,
761 : MAC2STR(data->auth.peer));
762 0 : return;
763 : }
764 :
765 2468 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
766 : " auth_type=%d auth_transaction=%d status_code=%d",
767 : MAC2STR(data->auth.peer), data->auth.auth_type,
768 : data->auth.auth_transaction, data->auth.status_code);
769 4936 : wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
770 2468 : data->auth.ies, data->auth.ies_len);
771 :
772 2468 : eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
773 :
774 : #ifdef CONFIG_SAE
775 2468 : if (data->auth.auth_type == WLAN_AUTH_SAE) {
776 : int res;
777 124 : res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
778 62 : data->auth.status_code, data->auth.ies,
779 : data->auth.ies_len);
780 62 : if (res < 0) {
781 0 : wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
782 0 : wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
783 :
784 : }
785 62 : if (res != 1)
786 35 : return;
787 :
788 27 : wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for "
789 : "4-way handshake");
790 27 : wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN,
791 27 : wpa_s->pending_bssid);
792 : }
793 : #endif /* CONFIG_SAE */
794 :
795 2433 : if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
796 20 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication failed (status "
797 : "code %d)", data->auth.status_code);
798 :
799 20 : if (data->auth.status_code !=
800 5 : WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
801 10 : wpa_s->sme.auth_alg == data->auth.auth_type ||
802 5 : wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
803 18 : wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
804 18 : wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
805 18 : return;
806 : }
807 :
808 2 : wpas_connect_work_done(wpa_s);
809 :
810 2 : switch (data->auth.auth_type) {
811 : case WLAN_AUTH_OPEN:
812 1 : wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
813 :
814 1 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
815 1 : wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
816 : wpa_s->current_ssid);
817 1 : return;
818 :
819 : case WLAN_AUTH_SHARED_KEY:
820 1 : wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
821 :
822 1 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
823 1 : wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
824 : wpa_s->current_ssid);
825 1 : return;
826 :
827 : default:
828 0 : return;
829 : }
830 : }
831 :
832 : #ifdef CONFIG_IEEE80211R
833 2413 : if (data->auth.auth_type == WLAN_AUTH_FT) {
834 : union wpa_event_data edata;
835 113 : os_memset(&edata, 0, sizeof(edata));
836 113 : edata.ft_ies.ies = data->auth.ies;
837 113 : edata.ft_ies.ies_len = data->auth.ies_len;
838 113 : os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN);
839 113 : wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata);
840 : }
841 : #endif /* CONFIG_IEEE80211R */
842 :
843 2413 : sme_associate(wpa_s, ssid->mode, data->auth.peer,
844 2413 : data->auth.auth_type);
845 : }
846 :
847 :
848 2523 : void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
849 : const u8 *bssid, u16 auth_type)
850 : {
851 : struct wpa_driver_associate_params params;
852 : struct ieee802_11_elems elems;
853 : #ifdef CONFIG_HT_OVERRIDES
854 : struct ieee80211_ht_capabilities htcaps;
855 : struct ieee80211_ht_capabilities htcaps_mask;
856 : #endif /* CONFIG_HT_OVERRIDES */
857 : #ifdef CONFIG_VHT_OVERRIDES
858 : struct ieee80211_vht_capabilities vhtcaps;
859 : struct ieee80211_vht_capabilities vhtcaps_mask;
860 : #endif /* CONFIG_VHT_OVERRIDES */
861 :
862 2523 : os_memset(¶ms, 0, sizeof(params));
863 2523 : params.bssid = bssid;
864 2523 : params.ssid = wpa_s->sme.ssid;
865 2523 : params.ssid_len = wpa_s->sme.ssid_len;
866 2523 : params.freq.freq = wpa_s->sme.freq;
867 5046 : params.bg_scan_period = wpa_s->current_ssid ?
868 2523 : wpa_s->current_ssid->bg_scan_period : -1;
869 5046 : params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
870 2523 : wpa_s->sme.assoc_req_ie : NULL;
871 2523 : params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
872 2523 : params.pairwise_suite = wpa_s->pairwise_cipher;
873 2523 : params.group_suite = wpa_s->group_cipher;
874 2523 : params.key_mgmt_suite = wpa_s->key_mgmt;
875 2523 : params.wpa_proto = wpa_s->wpa_proto;
876 : #ifdef CONFIG_HT_OVERRIDES
877 2523 : os_memset(&htcaps, 0, sizeof(htcaps));
878 2523 : os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
879 2523 : params.htcaps = (u8 *) &htcaps;
880 2523 : params.htcaps_mask = (u8 *) &htcaps_mask;
881 2523 : wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, ¶ms);
882 : #endif /* CONFIG_HT_OVERRIDES */
883 : #ifdef CONFIG_VHT_OVERRIDES
884 2523 : os_memset(&vhtcaps, 0, sizeof(vhtcaps));
885 2523 : os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
886 2523 : params.vhtcaps = &vhtcaps;
887 2523 : params.vhtcaps_mask = &vhtcaps_mask;
888 2523 : wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, ¶ms);
889 : #endif /* CONFIG_VHT_OVERRIDES */
890 : #ifdef CONFIG_IEEE80211R
891 2523 : if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
892 221 : params.wpa_ie = wpa_s->sme.ft_ies;
893 221 : params.wpa_ie_len = wpa_s->sme.ft_ies_len;
894 : }
895 : #endif /* CONFIG_IEEE80211R */
896 2523 : params.mode = mode;
897 2523 : params.mgmt_frame_protection = wpa_s->sme.mfp;
898 2523 : params.rrm_used = wpa_s->rrm.rrm_used;
899 2523 : if (wpa_s->sme.prev_bssid_set)
900 304 : params.prev_bssid = wpa_s->sme.prev_bssid;
901 :
902 22707 : wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
903 15138 : " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
904 5046 : params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
905 : params.freq.freq);
906 :
907 2523 : wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
908 :
909 5046 : if (params.wpa_ie == NULL ||
910 2523 : ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
911 : < 0) {
912 0 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
913 0 : os_memset(&elems, 0, sizeof(elems));
914 : }
915 2523 : if (elems.rsn_ie) {
916 1888 : params.wpa_proto = WPA_PROTO_RSN;
917 1888 : wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
918 1888 : elems.rsn_ie_len + 2);
919 635 : } else if (elems.wpa_ie) {
920 16 : params.wpa_proto = WPA_PROTO_WPA;
921 16 : wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
922 16 : elems.wpa_ie_len + 2);
923 619 : } else if (elems.osen) {
924 1 : params.wpa_proto = WPA_PROTO_OSEN;
925 1 : wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2,
926 1 : elems.osen_len + 2);
927 : } else
928 618 : wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
929 2523 : if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
930 366 : params.p2p = 1;
931 :
932 2523 : if (wpa_s->parent->set_sta_uapsd)
933 0 : params.uapsd = wpa_s->parent->sta_uapsd;
934 : else
935 2523 : params.uapsd = -1;
936 :
937 2523 : if (wpa_drv_associate(wpa_s, ¶ms) < 0) {
938 0 : wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
939 : "driver failed");
940 0 : wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
941 0 : wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
942 0 : os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
943 2523 : return;
944 : }
945 :
946 2523 : eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
947 : NULL);
948 : }
949 :
950 :
951 854 : int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
952 : const u8 *ies, size_t ies_len)
953 : {
954 854 : if (md == NULL || ies == NULL) {
955 25 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
956 25 : os_free(wpa_s->sme.ft_ies);
957 25 : wpa_s->sme.ft_ies = NULL;
958 25 : wpa_s->sme.ft_ies_len = 0;
959 25 : wpa_s->sme.ft_used = 0;
960 25 : return 0;
961 : }
962 :
963 829 : os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
964 829 : wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
965 829 : os_free(wpa_s->sme.ft_ies);
966 829 : wpa_s->sme.ft_ies = os_malloc(ies_len);
967 829 : if (wpa_s->sme.ft_ies == NULL)
968 0 : return -1;
969 829 : os_memcpy(wpa_s->sme.ft_ies, ies, ies_len);
970 829 : wpa_s->sme.ft_ies_len = ies_len;
971 829 : return 0;
972 : }
973 :
974 :
975 6 : static void sme_deauth(struct wpa_supplicant *wpa_s)
976 : {
977 : int bssid_changed;
978 :
979 6 : bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
980 :
981 6 : if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
982 : WLAN_REASON_DEAUTH_LEAVING) < 0) {
983 6 : wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
984 : "failed");
985 : }
986 6 : wpa_s->sme.prev_bssid_set = 0;
987 :
988 6 : wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
989 6 : wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
990 6 : os_memset(wpa_s->bssid, 0, ETH_ALEN);
991 6 : os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
992 6 : if (bssid_changed)
993 0 : wpas_notify_bssid_changed(wpa_s);
994 6 : }
995 :
996 :
997 7 : void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
998 : union wpa_event_data *data)
999 : {
1000 7 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
1001 : "status code %d", MAC2STR(wpa_s->pending_bssid),
1002 : data->assoc_reject.status_code);
1003 :
1004 7 : eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1005 :
1006 : #ifdef CONFIG_SAE
1007 8 : if (wpa_s->sme.sae_pmksa_caching && wpa_s->current_ssid &&
1008 1 : wpa_key_mgmt_sae(wpa_s->current_ssid->key_mgmt)) {
1009 1 : wpa_dbg(wpa_s, MSG_DEBUG,
1010 : "PMKSA caching attempt rejected - drop PMKSA cache entry and fall back to SAE authentication");
1011 1 : wpa_sm_aborted_cached(wpa_s->wpa);
1012 1 : wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid);
1013 1 : if (wpa_s->current_bss) {
1014 1 : struct wpa_bss *bss = wpa_s->current_bss;
1015 1 : struct wpa_ssid *ssid = wpa_s->current_ssid;
1016 :
1017 1 : wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
1018 : WLAN_REASON_DEAUTH_LEAVING);
1019 1 : wpas_connect_work_done(wpa_s);
1020 1 : wpa_supplicant_mark_disassoc(wpa_s);
1021 1 : wpa_supplicant_connect(wpa_s, bss, ssid);
1022 8 : return;
1023 : }
1024 : }
1025 : #endif /* CONFIG_SAE */
1026 :
1027 : /*
1028 : * For now, unconditionally terminate the previous authentication. In
1029 : * theory, this should not be needed, but mac80211 gets quite confused
1030 : * if the authentication is left pending.. Some roaming cases might
1031 : * benefit from using the previous authentication, so this could be
1032 : * optimized in the future.
1033 : */
1034 6 : sme_deauth(wpa_s);
1035 : }
1036 :
1037 :
1038 16 : void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
1039 : union wpa_event_data *data)
1040 : {
1041 16 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
1042 16 : wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1043 16 : wpa_supplicant_mark_disassoc(wpa_s);
1044 16 : }
1045 :
1046 :
1047 1 : void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
1048 : union wpa_event_data *data)
1049 : {
1050 1 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
1051 1 : wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1052 1 : wpa_supplicant_mark_disassoc(wpa_s);
1053 1 : }
1054 :
1055 :
1056 5 : void sme_event_disassoc(struct wpa_supplicant *wpa_s,
1057 : struct disassoc_info *info)
1058 : {
1059 5 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
1060 5 : if (wpa_s->sme.prev_bssid_set) {
1061 : /*
1062 : * cfg80211/mac80211 can get into somewhat confused state if
1063 : * the AP only disassociates us and leaves us in authenticated
1064 : * state. For now, force the state to be cleared to avoid
1065 : * confusing errors if we try to associate with the AP again.
1066 : */
1067 5 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
1068 : "driver state");
1069 5 : wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
1070 : WLAN_REASON_DEAUTH_LEAVING);
1071 : }
1072 5 : }
1073 :
1074 :
1075 0 : static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
1076 : {
1077 0 : struct wpa_supplicant *wpa_s = eloop_ctx;
1078 0 : if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
1079 0 : wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
1080 0 : sme_deauth(wpa_s);
1081 : }
1082 0 : }
1083 :
1084 :
1085 0 : static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
1086 : {
1087 0 : struct wpa_supplicant *wpa_s = eloop_ctx;
1088 0 : if (wpa_s->wpa_state == WPA_ASSOCIATING) {
1089 0 : wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
1090 0 : sme_deauth(wpa_s);
1091 : }
1092 0 : }
1093 :
1094 :
1095 18531 : void sme_state_changed(struct wpa_supplicant *wpa_s)
1096 : {
1097 : /* Make sure timers are cleaned up appropriately. */
1098 18531 : if (wpa_s->wpa_state != WPA_ASSOCIATING)
1099 15951 : eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1100 18531 : if (wpa_s->wpa_state != WPA_AUTHENTICATING)
1101 16052 : eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1102 18531 : }
1103 :
1104 :
1105 11 : void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
1106 : const u8 *prev_pending_bssid)
1107 : {
1108 : /*
1109 : * mac80211-workaround to force deauth on failed auth cmd,
1110 : * requires us to remain in authenticating state to allow the
1111 : * second authentication attempt to be continued properly.
1112 : */
1113 11 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
1114 : "to proceed after disconnection event");
1115 11 : wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
1116 11 : os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
1117 :
1118 : /*
1119 : * Re-arm authentication timer in case auth fails for whatever reason.
1120 : */
1121 11 : eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1122 11 : eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
1123 : NULL);
1124 11 : }
1125 :
1126 :
1127 5269 : void sme_clear_on_disassoc(struct wpa_supplicant *wpa_s)
1128 : {
1129 5269 : wpa_s->sme.prev_bssid_set = 0;
1130 : #ifdef CONFIG_SAE
1131 5269 : wpabuf_free(wpa_s->sme.sae_token);
1132 5269 : wpa_s->sme.sae_token = NULL;
1133 5269 : sae_clear_data(&wpa_s->sme.sae);
1134 : #endif /* CONFIG_SAE */
1135 : #ifdef CONFIG_IEEE80211R
1136 5269 : if (wpa_s->sme.ft_ies)
1137 25 : sme_update_ft_ies(wpa_s, NULL, NULL, 0);
1138 : #endif /* CONFIG_IEEE80211R */
1139 5269 : }
1140 :
1141 :
1142 288 : void sme_deinit(struct wpa_supplicant *wpa_s)
1143 : {
1144 288 : os_free(wpa_s->sme.ft_ies);
1145 288 : wpa_s->sme.ft_ies = NULL;
1146 288 : wpa_s->sme.ft_ies_len = 0;
1147 : #ifdef CONFIG_IEEE80211W
1148 288 : sme_stop_sa_query(wpa_s);
1149 : #endif /* CONFIG_IEEE80211W */
1150 288 : sme_clear_on_disassoc(wpa_s);
1151 :
1152 288 : eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1153 288 : eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1154 288 : eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1155 288 : }
1156 :
1157 :
1158 4 : static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
1159 : const u8 *chan_list, u8 num_channels,
1160 : u8 num_intol)
1161 : {
1162 : struct ieee80211_2040_bss_coex_ie *bc_ie;
1163 : struct ieee80211_2040_intol_chan_report *ic_report;
1164 : struct wpabuf *buf;
1165 :
1166 28 : wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR
1167 : " (num_channels=%u num_intol=%u)",
1168 24 : MAC2STR(wpa_s->bssid), num_channels, num_intol);
1169 4 : wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels",
1170 : chan_list, num_channels);
1171 :
1172 4 : buf = wpabuf_alloc(2 + /* action.category + action_code */
1173 : sizeof(struct ieee80211_2040_bss_coex_ie) +
1174 : sizeof(struct ieee80211_2040_intol_chan_report) +
1175 : num_channels);
1176 4 : if (buf == NULL)
1177 4 : return;
1178 :
1179 4 : wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
1180 4 : wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
1181 :
1182 4 : bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
1183 4 : bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
1184 4 : bc_ie->length = 1;
1185 4 : if (num_intol)
1186 2 : bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
1187 :
1188 4 : if (num_channels > 0) {
1189 3 : ic_report = wpabuf_put(buf, sizeof(*ic_report));
1190 3 : ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
1191 3 : ic_report->length = num_channels + 1;
1192 3 : ic_report->op_class = 0;
1193 3 : os_memcpy(wpabuf_put(buf, num_channels), chan_list,
1194 : num_channels);
1195 : }
1196 :
1197 8 : if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
1198 4 : wpa_s->own_addr, wpa_s->bssid,
1199 4 : wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
1200 0 : wpa_msg(wpa_s, MSG_INFO,
1201 : "SME: Failed to send 20/40 BSS Coexistence frame");
1202 : }
1203 :
1204 4 : wpabuf_free(buf);
1205 : }
1206 :
1207 :
1208 1615 : int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
1209 : {
1210 : struct wpa_bss *bss;
1211 : const u8 *ie;
1212 : u16 ht_cap;
1213 : u8 chan_list[P2P_MAX_CHANNELS], channel;
1214 1615 : u8 num_channels = 0, num_intol = 0, i;
1215 :
1216 1615 : if (!wpa_s->sme.sched_obss_scan)
1217 1611 : return 0;
1218 :
1219 4 : wpa_s->sme.sched_obss_scan = 0;
1220 4 : if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
1221 0 : return 1;
1222 :
1223 : /*
1224 : * Check whether AP uses regulatory triplet or channel triplet in
1225 : * country info. Right now the operating class of the BSS channel
1226 : * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
1227 : * based on the assumption that operating class triplet is not used in
1228 : * beacon frame. If the First Channel Number/Operating Extension
1229 : * Identifier octet has a positive integer value of 201 or greater,
1230 : * then its operating class triplet.
1231 : *
1232 : * TODO: If Supported Operating Classes element is present in beacon
1233 : * frame, have to lookup operating class in Annex E and fill them in
1234 : * 2040 coex frame.
1235 : */
1236 4 : ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
1237 4 : if (ie && (ie[1] >= 6) && (ie[5] >= 201))
1238 0 : return 1;
1239 :
1240 4 : os_memset(chan_list, 0, sizeof(chan_list));
1241 :
1242 11 : dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1243 : /* Skip other band bss */
1244 : enum hostapd_hw_mode mode;
1245 7 : mode = ieee80211_freq_to_chan(bss->freq, &channel);
1246 7 : if (mode != HOSTAPD_MODE_IEEE80211G &&
1247 : mode != HOSTAPD_MODE_IEEE80211B)
1248 0 : continue;
1249 :
1250 7 : ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
1251 7 : ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
1252 49 : wpa_printf(MSG_DEBUG, "SME OBSS scan BSS " MACSTR
1253 : " freq=%u chan=%u ht_cap=0x%x",
1254 42 : MAC2STR(bss->bssid), bss->freq, channel, ht_cap);
1255 :
1256 7 : if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
1257 3 : if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
1258 2 : num_intol++;
1259 :
1260 : /* Check whether the channel is already considered */
1261 3 : for (i = 0; i < num_channels; i++) {
1262 0 : if (channel == chan_list[i])
1263 0 : break;
1264 : }
1265 3 : if (i != num_channels)
1266 0 : continue;
1267 :
1268 3 : chan_list[num_channels++] = channel;
1269 : }
1270 : }
1271 :
1272 4 : sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
1273 4 : return 1;
1274 : }
1275 :
1276 :
1277 4 : static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
1278 : u16 num_modes,
1279 : enum hostapd_hw_mode mode)
1280 : {
1281 : u16 i;
1282 :
1283 4 : for (i = 0; i < num_modes; i++) {
1284 4 : if (modes[i].mode == mode)
1285 4 : return &modes[i];
1286 : }
1287 :
1288 0 : return NULL;
1289 : }
1290 :
1291 :
1292 4 : static void wpa_obss_scan_freqs_list(struct wpa_supplicant *wpa_s,
1293 : struct wpa_driver_scan_params *params)
1294 : {
1295 : /* Include only affected channels */
1296 : struct hostapd_hw_modes *mode;
1297 : int count, i;
1298 : int start, end;
1299 :
1300 4 : mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
1301 : HOSTAPD_MODE_IEEE80211G);
1302 4 : if (mode == NULL) {
1303 : /* No channels supported in this band - use empty list */
1304 0 : params->freqs = os_zalloc(sizeof(int));
1305 0 : return;
1306 : }
1307 :
1308 7 : if (wpa_s->sme.ht_sec_chan == HT_SEC_CHAN_UNKNOWN &&
1309 3 : wpa_s->current_bss) {
1310 : const u8 *ie;
1311 :
1312 3 : ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_OPERATION);
1313 3 : if (ie && ie[1] >= 2) {
1314 : u8 o;
1315 :
1316 3 : o = ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK;
1317 3 : if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
1318 0 : wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_ABOVE;
1319 3 : else if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
1320 3 : wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_BELOW;
1321 : }
1322 : }
1323 :
1324 4 : start = wpa_s->assoc_freq - 10;
1325 4 : end = wpa_s->assoc_freq + 10;
1326 4 : switch (wpa_s->sme.ht_sec_chan) {
1327 : case HT_SEC_CHAN_UNKNOWN:
1328 : /* HT40+ possible on channels 1..9 */
1329 0 : if (wpa_s->assoc_freq <= 2452)
1330 0 : start -= 20;
1331 : /* HT40- possible on channels 5-13 */
1332 0 : if (wpa_s->assoc_freq >= 2432)
1333 0 : end += 20;
1334 0 : break;
1335 : case HT_SEC_CHAN_ABOVE:
1336 0 : end += 20;
1337 0 : break;
1338 : case HT_SEC_CHAN_BELOW:
1339 4 : start -= 20;
1340 4 : break;
1341 : }
1342 4 : wpa_printf(MSG_DEBUG,
1343 : "OBSS: assoc_freq %d possible affected range %d-%d",
1344 : wpa_s->assoc_freq, start, end);
1345 :
1346 4 : params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
1347 4 : if (params->freqs == NULL)
1348 0 : return;
1349 60 : for (count = 0, i = 0; i < mode->num_channels; i++) {
1350 : int freq;
1351 :
1352 56 : if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
1353 0 : continue;
1354 56 : freq = mode->channels[i].freq;
1355 56 : if (freq - 10 >= end || freq + 10 <= start)
1356 20 : continue; /* not affected */
1357 36 : params->freqs[count++] = freq;
1358 : }
1359 : }
1360 :
1361 :
1362 4 : static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1363 : {
1364 4 : struct wpa_supplicant *wpa_s = eloop_ctx;
1365 : struct wpa_driver_scan_params params;
1366 :
1367 4 : if (!wpa_s->current_bss) {
1368 0 : wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
1369 4 : return;
1370 : }
1371 :
1372 4 : os_memset(¶ms, 0, sizeof(params));
1373 4 : wpa_obss_scan_freqs_list(wpa_s, ¶ms);
1374 4 : params.low_priority = 1;
1375 4 : wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
1376 :
1377 4 : if (wpa_supplicant_trigger_scan(wpa_s, ¶ms))
1378 0 : wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
1379 : else
1380 4 : wpa_s->sme.sched_obss_scan = 1;
1381 4 : os_free(params.freqs);
1382 :
1383 4 : eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1384 : sme_obss_scan_timeout, wpa_s, NULL);
1385 : }
1386 :
1387 :
1388 13035 : void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
1389 : {
1390 : const u8 *ie;
1391 13035 : struct wpa_bss *bss = wpa_s->current_bss;
1392 13035 : struct wpa_ssid *ssid = wpa_s->current_ssid;
1393 13035 : struct hostapd_hw_modes *hw_mode = NULL;
1394 : int i;
1395 :
1396 13035 : eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1397 13035 : wpa_s->sme.sched_obss_scan = 0;
1398 13035 : wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_UNKNOWN;
1399 13035 : if (!enable)
1400 10875 : return;
1401 :
1402 : /*
1403 : * Schedule OBSS scan if driver is using station SME in wpa_supplicant
1404 : * or it expects OBSS scan to be performed by wpa_supplicant.
1405 : */
1406 2192 : if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
1407 2160 : (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
1408 2128 : ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA)
1409 365 : return;
1410 :
1411 1795 : if (!wpa_s->hw.modes)
1412 0 : return;
1413 :
1414 : /* only HT caps in 11g mode are relevant */
1415 1795 : for (i = 0; i < wpa_s->hw.num_modes; i++) {
1416 1795 : hw_mode = &wpa_s->hw.modes[i];
1417 1795 : if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
1418 1795 : break;
1419 : }
1420 :
1421 : /* Driver does not support HT40 for 11g or doesn't have 11g. */
1422 3590 : if (i == wpa_s->hw.num_modes || !hw_mode ||
1423 1795 : !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1424 0 : return;
1425 :
1426 1795 : if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
1427 38 : return; /* Not associated on 2.4 GHz band */
1428 :
1429 : /* Check whether AP supports HT40 */
1430 1757 : ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
1431 3489 : if (!ie || ie[1] < 2 ||
1432 1732 : !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1433 1741 : return; /* AP does not support HT40 */
1434 :
1435 16 : ie = wpa_bss_get_ie(wpa_s->current_bss,
1436 : WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
1437 16 : if (!ie || ie[1] < 14)
1438 12 : return; /* AP does not request OBSS scans */
1439 :
1440 4 : wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
1441 4 : if (wpa_s->sme.obss_scan_int < 10) {
1442 2 : wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
1443 : "replaced with the minimum 10 sec",
1444 2 : wpa_s->sme.obss_scan_int);
1445 2 : wpa_s->sme.obss_scan_int = 10;
1446 : }
1447 4 : wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
1448 4 : wpa_s->sme.obss_scan_int);
1449 4 : eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1450 : sme_obss_scan_timeout, wpa_s, NULL);
1451 : }
1452 :
1453 :
1454 : #ifdef CONFIG_IEEE80211W
1455 :
1456 : static const unsigned int sa_query_max_timeout = 1000;
1457 : static const unsigned int sa_query_retry_timeout = 201;
1458 :
1459 5 : static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
1460 : {
1461 : u32 tu;
1462 : struct os_reltime now, passed;
1463 5 : os_get_reltime(&now);
1464 5 : os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed);
1465 5 : tu = (passed.sec * 1000000 + passed.usec) / 1024;
1466 5 : if (sa_query_max_timeout < tu) {
1467 1 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
1468 1 : sme_stop_sa_query(wpa_s);
1469 1 : wpa_supplicant_deauthenticate(
1470 : wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
1471 1 : return 1;
1472 : }
1473 :
1474 4 : return 0;
1475 : }
1476 :
1477 :
1478 8 : static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
1479 : const u8 *trans_id)
1480 : {
1481 : u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN];
1482 8 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
1483 : MACSTR, MAC2STR(wpa_s->bssid));
1484 8 : wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
1485 : trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1486 8 : req[0] = WLAN_ACTION_SA_QUERY;
1487 8 : req[1] = WLAN_SA_QUERY_REQUEST;
1488 8 : os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1489 8 : if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
1490 8 : wpa_s->own_addr, wpa_s->bssid,
1491 : req, sizeof(req), 0) < 0)
1492 0 : wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
1493 : "Request");
1494 8 : }
1495 :
1496 :
1497 9 : static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
1498 : {
1499 9 : struct wpa_supplicant *wpa_s = eloop_ctx;
1500 : unsigned int timeout, sec, usec;
1501 : u8 *trans_id, *nbuf;
1502 :
1503 14 : if (wpa_s->sme.sa_query_count > 0 &&
1504 5 : sme_check_sa_query_timeout(wpa_s))
1505 1 : return;
1506 :
1507 8 : nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
1508 8 : wpa_s->sme.sa_query_count + 1,
1509 : WLAN_SA_QUERY_TR_ID_LEN);
1510 8 : if (nbuf == NULL)
1511 0 : return;
1512 8 : if (wpa_s->sme.sa_query_count == 0) {
1513 : /* Starting a new SA Query procedure */
1514 4 : os_get_reltime(&wpa_s->sme.sa_query_start);
1515 : }
1516 8 : trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
1517 8 : wpa_s->sme.sa_query_trans_id = nbuf;
1518 8 : wpa_s->sme.sa_query_count++;
1519 :
1520 8 : if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) {
1521 0 : wpa_printf(MSG_DEBUG, "Could not generate SA Query ID");
1522 0 : return;
1523 : }
1524 :
1525 8 : timeout = sa_query_retry_timeout;
1526 8 : sec = ((timeout / 1000) * 1024) / 1000;
1527 8 : usec = (timeout % 1000) * 1024;
1528 8 : eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
1529 :
1530 8 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
1531 : wpa_s->sme.sa_query_count);
1532 :
1533 8 : sme_send_sa_query_req(wpa_s, trans_id);
1534 : }
1535 :
1536 :
1537 4 : static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
1538 : {
1539 4 : sme_sa_query_timer(wpa_s, NULL);
1540 4 : }
1541 :
1542 :
1543 292 : static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
1544 : {
1545 292 : eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
1546 292 : os_free(wpa_s->sme.sa_query_trans_id);
1547 292 : wpa_s->sme.sa_query_trans_id = NULL;
1548 292 : wpa_s->sme.sa_query_count = 0;
1549 292 : }
1550 :
1551 :
1552 38 : void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
1553 : const u8 *da, u16 reason_code)
1554 : {
1555 : struct wpa_ssid *ssid;
1556 : struct os_reltime now;
1557 :
1558 38 : if (wpa_s->wpa_state != WPA_COMPLETED)
1559 34 : return;
1560 38 : ssid = wpa_s->current_ssid;
1561 38 : if (wpas_get_ssid_pmf(wpa_s, ssid) == NO_MGMT_FRAME_PROTECTION)
1562 0 : return;
1563 38 : if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1564 0 : return;
1565 38 : if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
1566 : reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
1567 4 : return;
1568 34 : if (wpa_s->sme.sa_query_count > 0)
1569 6 : return;
1570 :
1571 28 : os_get_reltime(&now);
1572 53 : if (wpa_s->sme.last_unprot_disconnect.sec &&
1573 25 : !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10))
1574 24 : return; /* limit SA Query procedure frequency */
1575 4 : wpa_s->sme.last_unprot_disconnect = now;
1576 :
1577 4 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
1578 : "possible AP/STA state mismatch - trigger SA Query");
1579 4 : sme_start_sa_query(wpa_s);
1580 : }
1581 :
1582 :
1583 3 : void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
1584 : const u8 *data, size_t len)
1585 : {
1586 : int i;
1587 :
1588 3 : if (wpa_s->sme.sa_query_trans_id == NULL ||
1589 3 : len < 1 + WLAN_SA_QUERY_TR_ID_LEN ||
1590 3 : data[0] != WLAN_SA_QUERY_RESPONSE)
1591 0 : return;
1592 3 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
1593 : MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
1594 :
1595 3 : if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1596 0 : return;
1597 :
1598 3 : for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
1599 3 : if (os_memcmp(wpa_s->sme.sa_query_trans_id +
1600 : i * WLAN_SA_QUERY_TR_ID_LEN,
1601 : data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
1602 3 : break;
1603 : }
1604 :
1605 3 : if (i >= wpa_s->sme.sa_query_count) {
1606 0 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
1607 : "transaction identifier found");
1608 0 : return;
1609 : }
1610 :
1611 3 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
1612 : "from " MACSTR, MAC2STR(sa));
1613 3 : sme_stop_sa_query(wpa_s);
1614 : }
1615 :
1616 : #endif /* CONFIG_IEEE80211W */
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