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 31 : static int index_within_array(const int *array, int idx)
46 : {
47 : int i;
48 43 : for (i = 0; i < idx; i++) {
49 12 : if (array[i] <= 0)
50 0 : return 0;
51 : }
52 31 : return 1;
53 : }
54 :
55 :
56 31 : static int sme_set_sae_group(struct wpa_supplicant *wpa_s)
57 : {
58 31 : int *groups = wpa_s->conf->sae_groups;
59 31 : int default_groups[] = { 19, 20, 21, 25, 26, 0 };
60 :
61 31 : if (!groups || groups[0] <= 0)
62 14 : groups = default_groups;
63 :
64 : /* Configuration may have changed, so validate current index */
65 31 : if (!index_within_array(groups, wpa_s->sme.sae_group_index))
66 0 : return -1;
67 :
68 : for (;;) {
69 31 : int group = groups[wpa_s->sme.sae_group_index];
70 31 : if (group < 0)
71 0 : break;
72 31 : if (sae_set_group(&wpa_s->sme.sae, group) == 0) {
73 31 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected SAE group %d",
74 : wpa_s->sme.sae.group);
75 31 : return 0;
76 : }
77 0 : wpa_s->sme.sae_group_index++;
78 0 : }
79 :
80 0 : return -1;
81 : }
82 :
83 :
84 28 : 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 28 : if (ssid->passphrase == NULL) {
92 0 : wpa_printf(MSG_DEBUG, "SAE: No password available");
93 0 : return NULL;
94 : }
95 :
96 28 : 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 84 : if (sae_prepare_commit(wpa_s->own_addr, bssid,
102 28 : (u8 *) ssid->passphrase,
103 28 : 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 28 : len = wpa_s->sme.sae_token ? wpabuf_len(wpa_s->sme.sae_token) : 0;
110 28 : buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + len);
111 28 : if (buf == NULL)
112 0 : return NULL;
113 :
114 28 : wpabuf_put_le16(buf, 1); /* Transaction seq# */
115 28 : wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
116 28 : sae_write_commit(&wpa_s->sme.sae, buf, wpa_s->sme.sae_token);
117 :
118 28 : return buf;
119 : }
120 :
121 :
122 20 : static struct wpabuf * sme_auth_build_sae_confirm(struct wpa_supplicant *wpa_s)
123 : {
124 : struct wpabuf *buf;
125 :
126 20 : buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN);
127 20 : if (buf == NULL)
128 0 : return NULL;
129 :
130 20 : wpabuf_put_le16(buf, 2); /* Transaction seq# */
131 20 : wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
132 20 : sae_write_confirm(&wpa_s->sme.sae, buf);
133 :
134 20 : return buf;
135 : }
136 :
137 : #endif /* CONFIG_SAE */
138 :
139 :
140 1063 : static void sme_send_authentication(struct wpa_supplicant *wpa_s,
141 : struct wpa_bss *bss, struct wpa_ssid *ssid,
142 : int start)
143 : {
144 : struct wpa_driver_auth_params params;
145 : struct wpa_ssid *old_ssid;
146 : #ifdef CONFIG_IEEE80211R
147 : const u8 *ie;
148 : #endif /* CONFIG_IEEE80211R */
149 : #ifdef CONFIG_IEEE80211R
150 1063 : const u8 *md = NULL;
151 : #endif /* CONFIG_IEEE80211R */
152 : int i, bssid_changed;
153 1063 : struct wpabuf *resp = NULL;
154 : u8 ext_capab[10];
155 : int ext_capab_len;
156 :
157 1063 : if (bss == NULL) {
158 0 : wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for "
159 : "the network");
160 0 : wpas_connect_work_done(wpa_s);
161 0 : return;
162 : }
163 :
164 1063 : wpa_s->current_bss = bss;
165 :
166 1063 : os_memset(¶ms, 0, sizeof(params));
167 1063 : wpa_s->reassociate = 0;
168 :
169 1063 : params.freq = bss->freq;
170 1063 : params.bssid = bss->bssid;
171 1063 : params.ssid = bss->ssid;
172 1063 : params.ssid_len = bss->ssid_len;
173 1063 : params.p2p = ssid->p2p_group;
174 :
175 1839 : if (wpa_s->sme.ssid_len != params.ssid_len ||
176 776 : os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
177 371 : wpa_s->sme.prev_bssid_set = 0;
178 :
179 1063 : wpa_s->sme.freq = params.freq;
180 1063 : os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
181 1063 : wpa_s->sme.ssid_len = params.ssid_len;
182 :
183 1063 : params.auth_alg = WPA_AUTH_ALG_OPEN;
184 : #ifdef IEEE8021X_EAPOL
185 1063 : if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
186 4 : if (ssid->leap) {
187 0 : if (ssid->non_leap == 0)
188 0 : params.auth_alg = WPA_AUTH_ALG_LEAP;
189 : else
190 0 : params.auth_alg |= WPA_AUTH_ALG_LEAP;
191 : }
192 : }
193 : #endif /* IEEE8021X_EAPOL */
194 1063 : wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
195 : params.auth_alg);
196 1063 : if (ssid->auth_alg) {
197 176 : params.auth_alg = ssid->auth_alg;
198 176 : wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
199 : "0x%x", params.auth_alg);
200 : }
201 : #ifdef CONFIG_SAE
202 1063 : if (wpa_key_mgmt_sae(ssid->key_mgmt)) {
203 : const u8 *rsn;
204 : struct wpa_ie_data ied;
205 :
206 50 : rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
207 100 : if (rsn &&
208 50 : wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0) {
209 50 : if (wpa_key_mgmt_sae(ied.key_mgmt)) {
210 50 : wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg");
211 50 : params.auth_alg = WPA_AUTH_ALG_SAE;
212 : }
213 : }
214 : }
215 : #endif /* CONFIG_SAE */
216 :
217 5315 : for (i = 0; i < NUM_WEP_KEYS; i++) {
218 4252 : if (ssid->wep_key_len[i])
219 13 : params.wep_key[i] = ssid->wep_key[i];
220 4252 : params.wep_key_len[i] = ssid->wep_key_len[i];
221 : }
222 1063 : params.wep_tx_keyidx = ssid->wep_tx_keyidx;
223 :
224 1063 : bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
225 1063 : os_memset(wpa_s->bssid, 0, ETH_ALEN);
226 1063 : os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
227 1063 : if (bssid_changed)
228 56 : wpas_notify_bssid_changed(wpa_s);
229 :
230 2082 : if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
231 1870 : wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
232 1512 : wpa_key_mgmt_wpa(ssid->key_mgmt)) {
233 : int try_opportunistic;
234 1330 : try_opportunistic = (ssid->proactive_key_caching < 0 ?
235 659 : wpa_s->conf->okc :
236 1330 : ssid->proactive_key_caching) &&
237 6 : (ssid->proto & WPA_PROTO_RSN);
238 665 : if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
239 665 : wpa_s->current_ssid,
240 : try_opportunistic) == 0)
241 13 : eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
242 665 : wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
243 1330 : if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
244 665 : wpa_s->sme.assoc_req_ie,
245 : &wpa_s->sme.assoc_req_ie_len)) {
246 4 : wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
247 : "key management and encryption suites");
248 4 : wpas_connect_work_done(wpa_s);
249 4 : return;
250 : }
251 402 : } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
252 4 : wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) {
253 : /*
254 : * Both WPA and non-WPA IEEE 802.1X enabled in configuration -
255 : * use non-WPA since the scan results did not indicate that the
256 : * AP is using WPA or WPA2.
257 : */
258 0 : wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
259 0 : wpa_s->sme.assoc_req_ie_len = 0;
260 398 : } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
261 1 : wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
262 2 : if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
263 1 : wpa_s->sme.assoc_req_ie,
264 : &wpa_s->sme.assoc_req_ie_len)) {
265 0 : wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
266 : "key management and encryption suites (no "
267 : "scan results)");
268 0 : wpas_connect_work_done(wpa_s);
269 0 : return;
270 : }
271 : #ifdef CONFIG_WPS
272 397 : } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
273 : struct wpabuf *wps_ie;
274 199 : wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
275 199 : if (wps_ie && wpabuf_len(wps_ie) <=
276 : sizeof(wpa_s->sme.assoc_req_ie)) {
277 199 : wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
278 199 : os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
279 : wpa_s->sme.assoc_req_ie_len);
280 : } else
281 0 : wpa_s->sme.assoc_req_ie_len = 0;
282 199 : wpabuf_free(wps_ie);
283 199 : wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
284 : #endif /* CONFIG_WPS */
285 : } else {
286 198 : wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
287 198 : wpa_s->sme.assoc_req_ie_len = 0;
288 : }
289 :
290 : #ifdef CONFIG_IEEE80211R
291 1059 : ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
292 1059 : if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
293 30 : md = ie + 2;
294 1059 : wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
295 1059 : if (md) {
296 : /* Prepare for the next transition */
297 30 : wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
298 : }
299 :
300 1059 : if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) {
301 30 : if (wpa_s->sme.assoc_req_ie_len + 5 <
302 : sizeof(wpa_s->sme.assoc_req_ie)) {
303 : struct rsn_mdie *mdie;
304 30 : u8 *pos = wpa_s->sme.assoc_req_ie +
305 30 : wpa_s->sme.assoc_req_ie_len;
306 30 : *pos++ = WLAN_EID_MOBILITY_DOMAIN;
307 30 : *pos++ = sizeof(*mdie);
308 30 : mdie = (struct rsn_mdie *) pos;
309 30 : os_memcpy(mdie->mobility_domain, md,
310 : MOBILITY_DOMAIN_ID_LEN);
311 30 : mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
312 30 : wpa_s->sme.assoc_req_ie_len += 5;
313 : }
314 :
315 42 : if (wpa_s->sme.ft_used &&
316 24 : os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
317 12 : wpa_sm_has_ptk(wpa_s->wpa)) {
318 12 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT "
319 : "over-the-air");
320 12 : params.auth_alg = WPA_AUTH_ALG_FT;
321 12 : params.ie = wpa_s->sme.ft_ies;
322 12 : params.ie_len = wpa_s->sme.ft_ies_len;
323 : }
324 : }
325 : #endif /* CONFIG_IEEE80211R */
326 :
327 : #ifdef CONFIG_IEEE80211W
328 2118 : wpa_s->sme.mfp = ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
329 1059 : wpa_s->conf->pmf : ssid->ieee80211w;
330 1059 : if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) {
331 174 : const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
332 : struct wpa_ie_data _ie;
333 348 : if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
334 174 : _ie.capabilities &
335 : (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
336 30 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports "
337 : "MFP: require MFP");
338 30 : wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
339 : }
340 : }
341 : #endif /* CONFIG_IEEE80211W */
342 :
343 : #ifdef CONFIG_P2P
344 1059 : if (wpa_s->global->p2p) {
345 : u8 *pos;
346 : size_t len;
347 : int res;
348 1059 : pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
349 1059 : len = sizeof(wpa_s->sme.assoc_req_ie) -
350 1059 : wpa_s->sme.assoc_req_ie_len;
351 1059 : res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
352 : ssid->p2p_group);
353 1059 : if (res >= 0)
354 1056 : wpa_s->sme.assoc_req_ie_len += res;
355 : }
356 : #endif /* CONFIG_P2P */
357 :
358 : #ifdef CONFIG_HS20
359 1059 : if (is_hs20_network(wpa_s, ssid, bss)) {
360 : struct wpabuf *hs20;
361 78 : hs20 = wpabuf_alloc(20);
362 78 : if (hs20) {
363 78 : int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid);
364 78 : wpas_hs20_add_indication(hs20, pps_mo_id);
365 78 : os_memcpy(wpa_s->sme.assoc_req_ie +
366 : wpa_s->sme.assoc_req_ie_len,
367 : wpabuf_head(hs20), wpabuf_len(hs20));
368 78 : wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
369 78 : wpabuf_free(hs20);
370 : }
371 : }
372 : #endif /* CONFIG_HS20 */
373 :
374 1059 : ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab);
375 1059 : if (ext_capab_len > 0) {
376 1059 : u8 *pos = wpa_s->sme.assoc_req_ie;
377 1059 : if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
378 648 : pos += 2 + pos[1];
379 1059 : os_memmove(pos + ext_capab_len, pos,
380 : wpa_s->sme.assoc_req_ie_len -
381 : (pos - wpa_s->sme.assoc_req_ie));
382 1059 : wpa_s->sme.assoc_req_ie_len += ext_capab_len;
383 1059 : os_memcpy(pos, ext_capab, ext_capab_len);
384 : }
385 :
386 : #ifdef CONFIG_SAE
387 1059 : if (params.auth_alg == WPA_AUTH_ALG_SAE) {
388 48 : if (start)
389 28 : resp = sme_auth_build_sae_commit(wpa_s, ssid,
390 28 : bss->bssid);
391 : else
392 20 : resp = sme_auth_build_sae_confirm(wpa_s);
393 48 : if (resp == NULL) {
394 0 : wpas_connect_work_done(wpa_s);
395 0 : return;
396 : }
397 48 : params.sae_data = wpabuf_head(resp);
398 48 : params.sae_data_len = wpabuf_len(resp);
399 48 : wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED;
400 : }
401 : #endif /* CONFIG_SAE */
402 :
403 1059 : wpa_supplicant_cancel_sched_scan(wpa_s);
404 1059 : wpa_supplicant_cancel_scan(wpa_s);
405 :
406 7413 : wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
407 6354 : " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
408 : wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
409 :
410 1059 : wpa_clear_keys(wpa_s, bss->bssid);
411 1059 : wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
412 1059 : old_ssid = wpa_s->current_ssid;
413 1059 : wpa_s->current_ssid = ssid;
414 1059 : wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
415 1059 : wpa_supplicant_initiate_eapol(wpa_s);
416 1059 : if (old_ssid != wpa_s->current_ssid)
417 495 : wpas_notify_network_changed(wpa_s);
418 :
419 : #ifdef CONFIG_P2P
420 : /*
421 : * If multi-channel concurrency is not supported, check for any
422 : * frequency conflict. In case of any frequency conflict, remove the
423 : * least prioritized connection.
424 : */
425 1059 : if (wpa_s->num_multichan_concurrent < 2) {
426 : int freq, num;
427 1059 : num = get_shared_radio_freqs(wpa_s, &freq, 1);
428 1059 : if (num > 0 && freq > 0 && freq != params.freq) {
429 0 : wpa_printf(MSG_DEBUG,
430 : "Conflicting frequency found (%d != %d)",
431 : freq, params.freq);
432 0 : if (wpas_p2p_handle_frequency_conflicts(wpa_s,
433 : params.freq,
434 : ssid) < 0) {
435 0 : wpas_connection_failed(wpa_s, bss->bssid);
436 0 : wpa_supplicant_mark_disassoc(wpa_s);
437 0 : wpabuf_free(resp);
438 0 : wpas_connect_work_done(wpa_s);
439 0 : return;
440 : }
441 : }
442 : }
443 : #endif /* CONFIG_P2P */
444 :
445 1059 : wpa_s->sme.auth_alg = params.auth_alg;
446 1059 : if (wpa_drv_authenticate(wpa_s, ¶ms) < 0) {
447 0 : wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
448 : "driver failed");
449 0 : wpas_connection_failed(wpa_s, bss->bssid);
450 0 : wpa_supplicant_mark_disassoc(wpa_s);
451 0 : wpabuf_free(resp);
452 0 : wpas_connect_work_done(wpa_s);
453 0 : return;
454 : }
455 :
456 1059 : eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
457 : NULL);
458 :
459 : /*
460 : * Association will be started based on the authentication event from
461 : * the driver.
462 : */
463 :
464 1059 : wpabuf_free(resp);
465 : }
466 :
467 :
468 1037 : static void sme_auth_start_cb(struct wpa_radio_work *work, int deinit)
469 : {
470 1037 : struct wpa_connect_work *cwork = work->ctx;
471 1037 : struct wpa_supplicant *wpa_s = work->wpa_s;
472 :
473 1037 : if (deinit) {
474 2 : if (work->started)
475 1 : wpa_s->connect_work = NULL;
476 :
477 2 : wpas_connect_work_free(cwork);
478 2 : return;
479 : }
480 :
481 1035 : wpa_s->connect_work = work;
482 :
483 1035 : if (!wpas_valid_bss_ssid(wpa_s, cwork->bss, cwork->ssid)) {
484 0 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt");
485 0 : wpas_connect_work_done(wpa_s);
486 0 : return;
487 : }
488 :
489 1035 : sme_send_authentication(wpa_s, cwork->bss, cwork->ssid, 1);
490 : }
491 :
492 :
493 1038 : void sme_authenticate(struct wpa_supplicant *wpa_s,
494 : struct wpa_bss *bss, struct wpa_ssid *ssid)
495 : {
496 : struct wpa_connect_work *cwork;
497 :
498 1038 : if (bss == NULL || ssid == NULL)
499 2 : return;
500 1036 : if (wpa_s->connect_work) {
501 0 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reject sme_authenticate() call since connect_work exist");
502 0 : return;
503 : }
504 :
505 1036 : if (radio_work_pending(wpa_s, "sme-connect")) {
506 : /*
507 : * The previous sme-connect work might no longer be valid due to
508 : * the fact that the BSS list was updated. In addition, it makes
509 : * sense to adhere to the 'newer' decision.
510 : */
511 0 : wpa_dbg(wpa_s, MSG_DEBUG,
512 : "SME: Remove previous pending sme-connect");
513 0 : radio_remove_works(wpa_s, "sme-connect", 0);
514 : }
515 :
516 1036 : cwork = os_zalloc(sizeof(*cwork));
517 1036 : if (cwork == NULL)
518 0 : return;
519 1036 : cwork->bss = bss;
520 1036 : cwork->ssid = ssid;
521 1036 : cwork->sme = 1;
522 :
523 : #ifdef CONFIG_SAE
524 1036 : wpa_s->sme.sae.state = SAE_NOTHING;
525 1036 : wpa_s->sme.sae.send_confirm = 0;
526 1036 : wpa_s->sme.sae_group_index = 0;
527 : #endif /* CONFIG_SAE */
528 :
529 1036 : if (radio_add_work(wpa_s, bss->freq, "sme-connect", 1,
530 : sme_auth_start_cb, cwork) < 0)
531 0 : wpas_connect_work_free(cwork);
532 : }
533 :
534 :
535 : #ifdef CONFIG_SAE
536 :
537 48 : static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
538 : u16 status_code, const u8 *data, size_t len)
539 : {
540 48 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
541 : "status code %u", auth_transaction, status_code);
542 :
543 48 : if (auth_transaction == 1 &&
544 5 : status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
545 10 : wpa_s->sme.sae.state == SAE_COMMITTED &&
546 10 : wpa_s->current_bss && wpa_s->current_ssid) {
547 5 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE anti-clogging token "
548 : "requested");
549 5 : wpabuf_free(wpa_s->sme.sae_token);
550 5 : wpa_s->sme.sae_token = wpabuf_alloc_copy(data, len);
551 5 : sme_send_authentication(wpa_s, wpa_s->current_bss,
552 : wpa_s->current_ssid, 1);
553 5 : return 0;
554 : }
555 :
556 43 : if (auth_transaction == 1 &&
557 3 : status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
558 6 : wpa_s->sme.sae.state == SAE_COMMITTED &&
559 6 : wpa_s->current_bss && wpa_s->current_ssid) {
560 3 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
561 3 : wpa_s->sme.sae_group_index++;
562 3 : if (sme_set_sae_group(wpa_s) < 0)
563 0 : return -1; /* no other groups enabled */
564 3 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
565 3 : sme_send_authentication(wpa_s, wpa_s->current_bss,
566 : wpa_s->current_ssid, 1);
567 3 : return 0;
568 : }
569 :
570 40 : if (status_code != WLAN_STATUS_SUCCESS)
571 0 : return -1;
572 :
573 40 : if (auth_transaction == 1) {
574 20 : int *groups = wpa_s->conf->sae_groups;
575 :
576 20 : wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
577 40 : if (wpa_s->current_bss == NULL ||
578 20 : wpa_s->current_ssid == NULL)
579 0 : return -1;
580 20 : if (wpa_s->sme.sae.state != SAE_COMMITTED)
581 0 : return -1;
582 20 : if (groups && groups[0] <= 0)
583 9 : groups = NULL;
584 20 : if (sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
585 : groups) != WLAN_STATUS_SUCCESS)
586 0 : return -1;
587 :
588 20 : if (sae_process_commit(&wpa_s->sme.sae) < 0) {
589 0 : wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
590 : "commit");
591 0 : return -1;
592 : }
593 :
594 20 : wpabuf_free(wpa_s->sme.sae_token);
595 20 : wpa_s->sme.sae_token = NULL;
596 20 : sme_send_authentication(wpa_s, wpa_s->current_bss,
597 : wpa_s->current_ssid, 0);
598 20 : return 0;
599 20 : } else if (auth_transaction == 2) {
600 20 : wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
601 20 : if (wpa_s->sme.sae.state != SAE_CONFIRMED)
602 0 : return -1;
603 20 : if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
604 0 : return -1;
605 20 : wpa_s->sme.sae.state = SAE_ACCEPTED;
606 20 : sae_clear_temp_data(&wpa_s->sme.sae);
607 20 : return 1;
608 : }
609 :
610 0 : return -1;
611 : }
612 : #endif /* CONFIG_SAE */
613 :
614 :
615 1068 : void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
616 : {
617 1068 : struct wpa_ssid *ssid = wpa_s->current_ssid;
618 :
619 1068 : if (ssid == NULL) {
620 5 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
621 : "when network is not selected");
622 5 : return;
623 : }
624 :
625 1063 : if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
626 9 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
627 : "when not in authenticating state");
628 9 : return;
629 : }
630 :
631 1054 : if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
632 0 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
633 : "unexpected peer " MACSTR,
634 : MAC2STR(data->auth.peer));
635 0 : return;
636 : }
637 :
638 1054 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
639 : " auth_type=%d auth_transaction=%d status_code=%d",
640 : MAC2STR(data->auth.peer), data->auth.auth_type,
641 : data->auth.auth_transaction, data->auth.status_code);
642 2108 : wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
643 1054 : data->auth.ies, data->auth.ies_len);
644 :
645 1054 : eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
646 :
647 : #ifdef CONFIG_SAE
648 1054 : if (data->auth.auth_type == WLAN_AUTH_SAE) {
649 : int res;
650 96 : res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
651 48 : data->auth.status_code, data->auth.ies,
652 : data->auth.ies_len);
653 48 : if (res < 0) {
654 0 : wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
655 0 : wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
656 :
657 : }
658 48 : if (res != 1)
659 28 : return;
660 :
661 20 : wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for "
662 : "4-way handshake");
663 20 : wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN);
664 : }
665 : #endif /* CONFIG_SAE */
666 :
667 1026 : if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
668 19 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication failed (status "
669 : "code %d)", data->auth.status_code);
670 :
671 19 : if (data->auth.status_code !=
672 5 : WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
673 10 : wpa_s->sme.auth_alg == data->auth.auth_type ||
674 5 : wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
675 17 : wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
676 17 : wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
677 17 : return;
678 : }
679 :
680 2 : wpas_connect_work_done(wpa_s);
681 :
682 2 : switch (data->auth.auth_type) {
683 : case WLAN_AUTH_OPEN:
684 1 : wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
685 :
686 1 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
687 1 : wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
688 : wpa_s->current_ssid);
689 1 : return;
690 :
691 : case WLAN_AUTH_SHARED_KEY:
692 1 : wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
693 :
694 1 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
695 1 : wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
696 : wpa_s->current_ssid);
697 1 : return;
698 :
699 : default:
700 0 : return;
701 : }
702 : }
703 :
704 : #ifdef CONFIG_IEEE80211R
705 1007 : if (data->auth.auth_type == WLAN_AUTH_FT) {
706 : union wpa_event_data edata;
707 12 : os_memset(&edata, 0, sizeof(edata));
708 12 : edata.ft_ies.ies = data->auth.ies;
709 12 : edata.ft_ies.ies_len = data->auth.ies_len;
710 12 : os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN);
711 12 : wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata);
712 : }
713 : #endif /* CONFIG_IEEE80211R */
714 :
715 1007 : sme_associate(wpa_s, ssid->mode, data->auth.peer,
716 1007 : data->auth.auth_type);
717 : }
718 :
719 :
720 1015 : void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
721 : const u8 *bssid, u16 auth_type)
722 : {
723 : struct wpa_driver_associate_params params;
724 : struct ieee802_11_elems elems;
725 : #ifdef CONFIG_HT_OVERRIDES
726 : struct ieee80211_ht_capabilities htcaps;
727 : struct ieee80211_ht_capabilities htcaps_mask;
728 : #endif /* CONFIG_HT_OVERRIDES */
729 : #ifdef CONFIG_VHT_OVERRIDES
730 : struct ieee80211_vht_capabilities vhtcaps;
731 : struct ieee80211_vht_capabilities vhtcaps_mask;
732 : #endif /* CONFIG_VHT_OVERRIDES */
733 :
734 1015 : os_memset(¶ms, 0, sizeof(params));
735 1015 : params.bssid = bssid;
736 1015 : params.ssid = wpa_s->sme.ssid;
737 1015 : params.ssid_len = wpa_s->sme.ssid_len;
738 1015 : params.freq = wpa_s->sme.freq;
739 2030 : params.bg_scan_period = wpa_s->current_ssid ?
740 1015 : wpa_s->current_ssid->bg_scan_period : -1;
741 2030 : params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
742 1015 : wpa_s->sme.assoc_req_ie : NULL;
743 1015 : params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
744 1015 : params.pairwise_suite = wpa_s->pairwise_cipher;
745 1015 : params.group_suite = wpa_s->group_cipher;
746 1015 : params.key_mgmt_suite = wpa_s->key_mgmt;
747 1015 : params.wpa_proto = wpa_s->wpa_proto;
748 : #ifdef CONFIG_HT_OVERRIDES
749 1015 : os_memset(&htcaps, 0, sizeof(htcaps));
750 1015 : os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
751 1015 : params.htcaps = (u8 *) &htcaps;
752 1015 : params.htcaps_mask = (u8 *) &htcaps_mask;
753 1015 : wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, ¶ms);
754 : #endif /* CONFIG_HT_OVERRIDES */
755 : #ifdef CONFIG_VHT_OVERRIDES
756 1015 : os_memset(&vhtcaps, 0, sizeof(vhtcaps));
757 1015 : os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
758 1015 : params.vhtcaps = &vhtcaps;
759 1015 : params.vhtcaps_mask = &vhtcaps_mask;
760 1015 : wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, ¶ms);
761 : #endif /* CONFIG_VHT_OVERRIDES */
762 : #ifdef CONFIG_IEEE80211R
763 1015 : if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
764 20 : params.wpa_ie = wpa_s->sme.ft_ies;
765 20 : params.wpa_ie_len = wpa_s->sme.ft_ies_len;
766 : }
767 : #endif /* CONFIG_IEEE80211R */
768 1015 : params.mode = mode;
769 1015 : params.mgmt_frame_protection = wpa_s->sme.mfp;
770 1015 : if (wpa_s->sme.prev_bssid_set)
771 34 : params.prev_bssid = wpa_s->sme.prev_bssid;
772 :
773 9135 : wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
774 6090 : " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
775 2030 : params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
776 : params.freq);
777 :
778 1015 : wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
779 :
780 2030 : if (params.wpa_ie == NULL ||
781 1015 : ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
782 : < 0) {
783 0 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
784 0 : os_memset(&elems, 0, sizeof(elems));
785 : }
786 1015 : if (elems.rsn_ie) {
787 625 : params.wpa_proto = WPA_PROTO_RSN;
788 625 : wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
789 625 : elems.rsn_ie_len + 2);
790 390 : } else if (elems.wpa_ie) {
791 11 : params.wpa_proto = WPA_PROTO_WPA;
792 11 : wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
793 11 : elems.wpa_ie_len + 2);
794 379 : } else if (elems.osen) {
795 1 : params.wpa_proto = WPA_PROTO_OSEN;
796 1 : wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2,
797 1 : elems.osen_len + 2);
798 : } else
799 378 : wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
800 1015 : if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
801 225 : params.p2p = 1;
802 :
803 1015 : if (wpa_s->parent->set_sta_uapsd)
804 0 : params.uapsd = wpa_s->parent->sta_uapsd;
805 : else
806 1015 : params.uapsd = -1;
807 :
808 1015 : if (wpa_drv_associate(wpa_s, ¶ms) < 0) {
809 0 : wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
810 : "driver failed");
811 0 : wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
812 0 : wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
813 0 : os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
814 1015 : return;
815 : }
816 :
817 1015 : eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
818 : NULL);
819 : }
820 :
821 :
822 122 : int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
823 : const u8 *ies, size_t ies_len)
824 : {
825 122 : if (md == NULL || ies == NULL) {
826 16 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
827 16 : os_free(wpa_s->sme.ft_ies);
828 16 : wpa_s->sme.ft_ies = NULL;
829 16 : wpa_s->sme.ft_ies_len = 0;
830 16 : wpa_s->sme.ft_used = 0;
831 16 : return 0;
832 : }
833 :
834 106 : os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
835 106 : wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
836 106 : os_free(wpa_s->sme.ft_ies);
837 106 : wpa_s->sme.ft_ies = os_malloc(ies_len);
838 106 : if (wpa_s->sme.ft_ies == NULL)
839 0 : return -1;
840 106 : os_memcpy(wpa_s->sme.ft_ies, ies, ies_len);
841 106 : wpa_s->sme.ft_ies_len = ies_len;
842 106 : return 0;
843 : }
844 :
845 :
846 7 : static void sme_deauth(struct wpa_supplicant *wpa_s)
847 : {
848 : int bssid_changed;
849 :
850 7 : bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
851 :
852 7 : if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
853 : WLAN_REASON_DEAUTH_LEAVING) < 0) {
854 7 : wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
855 : "failed");
856 : }
857 7 : wpa_s->sme.prev_bssid_set = 0;
858 :
859 7 : wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
860 7 : wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
861 7 : os_memset(wpa_s->bssid, 0, ETH_ALEN);
862 7 : os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
863 7 : if (bssid_changed)
864 0 : wpas_notify_bssid_changed(wpa_s);
865 7 : }
866 :
867 :
868 7 : void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
869 : union wpa_event_data *data)
870 : {
871 7 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
872 : "status code %d", MAC2STR(wpa_s->pending_bssid),
873 : data->assoc_reject.status_code);
874 :
875 7 : eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
876 :
877 : /*
878 : * For now, unconditionally terminate the previous authentication. In
879 : * theory, this should not be needed, but mac80211 gets quite confused
880 : * if the authentication is left pending.. Some roaming cases might
881 : * benefit from using the previous authentication, so this could be
882 : * optimized in the future.
883 : */
884 7 : sme_deauth(wpa_s);
885 7 : }
886 :
887 :
888 5 : void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
889 : union wpa_event_data *data)
890 : {
891 5 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
892 5 : wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
893 5 : wpa_supplicant_mark_disassoc(wpa_s);
894 5 : }
895 :
896 :
897 2 : void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
898 : union wpa_event_data *data)
899 : {
900 2 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
901 2 : wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
902 2 : wpa_supplicant_mark_disassoc(wpa_s);
903 2 : }
904 :
905 :
906 4 : void sme_event_disassoc(struct wpa_supplicant *wpa_s,
907 : struct disassoc_info *info)
908 : {
909 4 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
910 4 : if (wpa_s->sme.prev_bssid_set) {
911 : /*
912 : * cfg80211/mac80211 can get into somewhat confused state if
913 : * the AP only disassociates us and leaves us in authenticated
914 : * state. For now, force the state to be cleared to avoid
915 : * confusing errors if we try to associate with the AP again.
916 : */
917 4 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
918 : "driver state");
919 4 : wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
920 : WLAN_REASON_DEAUTH_LEAVING);
921 : }
922 4 : }
923 :
924 :
925 0 : static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
926 : {
927 0 : struct wpa_supplicant *wpa_s = eloop_ctx;
928 0 : if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
929 0 : wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
930 0 : sme_deauth(wpa_s);
931 : }
932 0 : }
933 :
934 :
935 0 : static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
936 : {
937 0 : struct wpa_supplicant *wpa_s = eloop_ctx;
938 0 : if (wpa_s->wpa_state == WPA_ASSOCIATING) {
939 0 : wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
940 0 : sme_deauth(wpa_s);
941 : }
942 0 : }
943 :
944 :
945 8484 : void sme_state_changed(struct wpa_supplicant *wpa_s)
946 : {
947 : /* Make sure timers are cleaned up appropriately. */
948 8484 : if (wpa_s->wpa_state != WPA_ASSOCIATING)
949 7441 : eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
950 8484 : if (wpa_s->wpa_state != WPA_AUTHENTICATING)
951 7455 : eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
952 8484 : }
953 :
954 :
955 0 : void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
956 : const u8 *prev_pending_bssid)
957 : {
958 : /*
959 : * mac80211-workaround to force deauth on failed auth cmd,
960 : * requires us to remain in authenticating state to allow the
961 : * second authentication attempt to be continued properly.
962 : */
963 0 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
964 : "to proceed after disconnection event");
965 0 : wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
966 0 : os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
967 :
968 : /*
969 : * Re-arm authentication timer in case auth fails for whatever reason.
970 : */
971 0 : eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
972 0 : eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
973 : NULL);
974 0 : }
975 :
976 :
977 78 : void sme_deinit(struct wpa_supplicant *wpa_s)
978 : {
979 78 : os_free(wpa_s->sme.ft_ies);
980 78 : wpa_s->sme.ft_ies = NULL;
981 78 : wpa_s->sme.ft_ies_len = 0;
982 : #ifdef CONFIG_IEEE80211W
983 78 : sme_stop_sa_query(wpa_s);
984 : #endif /* CONFIG_IEEE80211W */
985 : #ifdef CONFIG_SAE
986 78 : wpabuf_free(wpa_s->sme.sae_token);
987 78 : wpa_s->sme.sae_token = NULL;
988 78 : sae_clear_data(&wpa_s->sme.sae);
989 : #endif /* CONFIG_SAE */
990 :
991 78 : eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
992 78 : eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
993 78 : eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
994 78 : }
995 :
996 :
997 6 : static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
998 : const u8 *chan_list, u8 num_channels,
999 : u8 num_intol)
1000 : {
1001 : struct ieee80211_2040_bss_coex_ie *bc_ie;
1002 : struct ieee80211_2040_intol_chan_report *ic_report;
1003 : struct wpabuf *buf;
1004 :
1005 42 : wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR
1006 : " (num_channels=%u num_intol=%u)",
1007 36 : MAC2STR(wpa_s->bssid), num_channels, num_intol);
1008 6 : wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels",
1009 : chan_list, num_channels);
1010 :
1011 6 : buf = wpabuf_alloc(2 + /* action.category + action_code */
1012 : sizeof(struct ieee80211_2040_bss_coex_ie) +
1013 : sizeof(struct ieee80211_2040_intol_chan_report) +
1014 : num_channels);
1015 6 : if (buf == NULL)
1016 6 : return;
1017 :
1018 6 : wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
1019 6 : wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
1020 :
1021 6 : bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
1022 6 : bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
1023 6 : bc_ie->length = 1;
1024 6 : if (num_intol)
1025 3 : bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
1026 :
1027 6 : if (num_channels > 0) {
1028 4 : ic_report = wpabuf_put(buf, sizeof(*ic_report));
1029 4 : ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
1030 4 : ic_report->length = num_channels + 1;
1031 4 : ic_report->op_class = 0;
1032 4 : os_memcpy(wpabuf_put(buf, num_channels), chan_list,
1033 : num_channels);
1034 : }
1035 :
1036 12 : if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
1037 6 : wpa_s->own_addr, wpa_s->bssid,
1038 6 : wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
1039 0 : wpa_msg(wpa_s, MSG_INFO,
1040 : "SME: Failed to send 20/40 BSS Coexistence frame");
1041 : }
1042 :
1043 6 : wpabuf_free(buf);
1044 : }
1045 :
1046 :
1047 1070 : int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
1048 : {
1049 : struct wpa_bss *bss;
1050 : const u8 *ie;
1051 : u16 ht_cap;
1052 : u8 chan_list[P2P_MAX_CHANNELS], channel;
1053 1070 : u8 num_channels = 0, num_intol = 0, i;
1054 :
1055 1070 : if (!wpa_s->sme.sched_obss_scan)
1056 1064 : return 0;
1057 :
1058 6 : wpa_s->sme.sched_obss_scan = 0;
1059 6 : if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
1060 0 : return 1;
1061 :
1062 : /*
1063 : * Check whether AP uses regulatory triplet or channel triplet in
1064 : * country info. Right now the operating class of the BSS channel
1065 : * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
1066 : * based on the assumption that operating class triplet is not used in
1067 : * beacon frame. If the First Channel Number/Operating Extension
1068 : * Identifier octet has a positive integer value of 201 or greater,
1069 : * then its operating class triplet.
1070 : *
1071 : * TODO: If Supported Operating Classes element is present in beacon
1072 : * frame, have to lookup operating class in Annex E and fill them in
1073 : * 2040 coex frame.
1074 : */
1075 6 : ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
1076 6 : if (ie && (ie[1] >= 6) && (ie[5] >= 201))
1077 0 : return 1;
1078 :
1079 6 : os_memset(chan_list, 0, sizeof(chan_list));
1080 :
1081 16 : dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1082 : /* Skip other band bss */
1083 : enum hostapd_hw_mode mode;
1084 10 : mode = ieee80211_freq_to_chan(bss->freq, &channel);
1085 10 : if (mode != HOSTAPD_MODE_IEEE80211G &&
1086 : mode != HOSTAPD_MODE_IEEE80211B)
1087 0 : continue;
1088 :
1089 10 : ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
1090 10 : ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
1091 70 : wpa_printf(MSG_DEBUG, "SME OBSS scan BSS " MACSTR
1092 : " freq=%u chan=%u ht_cap=0x%x",
1093 60 : MAC2STR(bss->bssid), bss->freq, channel, ht_cap);
1094 :
1095 10 : if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
1096 4 : if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
1097 3 : num_intol++;
1098 :
1099 : /* Check whether the channel is already considered */
1100 4 : for (i = 0; i < num_channels; i++) {
1101 0 : if (channel == chan_list[i])
1102 0 : break;
1103 : }
1104 4 : if (i != num_channels)
1105 0 : continue;
1106 :
1107 4 : chan_list[num_channels++] = channel;
1108 : }
1109 : }
1110 :
1111 6 : sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
1112 6 : return 1;
1113 : }
1114 :
1115 :
1116 6 : static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
1117 : u16 num_modes,
1118 : enum hostapd_hw_mode mode)
1119 : {
1120 : u16 i;
1121 :
1122 6 : for (i = 0; i < num_modes; i++) {
1123 6 : if (modes[i].mode == mode)
1124 6 : return &modes[i];
1125 : }
1126 :
1127 0 : return NULL;
1128 : }
1129 :
1130 :
1131 6 : static void wpa_setband_scan_freqs_list(struct wpa_supplicant *wpa_s,
1132 : enum hostapd_hw_mode band,
1133 : struct wpa_driver_scan_params *params)
1134 : {
1135 : /* Include only supported channels for the specified band */
1136 : struct hostapd_hw_modes *mode;
1137 : int count, i;
1138 :
1139 6 : mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, band);
1140 6 : if (mode == NULL) {
1141 : /* No channels supported in this band - use empty list */
1142 0 : params->freqs = os_zalloc(sizeof(int));
1143 0 : return;
1144 : }
1145 :
1146 6 : params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
1147 6 : if (params->freqs == NULL)
1148 0 : return;
1149 90 : for (count = 0, i = 0; i < mode->num_channels; i++) {
1150 84 : if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
1151 0 : continue;
1152 84 : params->freqs[count++] = mode->channels[i].freq;
1153 : }
1154 : }
1155 :
1156 :
1157 6 : static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1158 : {
1159 6 : struct wpa_supplicant *wpa_s = eloop_ctx;
1160 : struct wpa_driver_scan_params params;
1161 :
1162 6 : if (!wpa_s->current_bss) {
1163 0 : wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
1164 6 : return;
1165 : }
1166 :
1167 6 : os_memset(¶ms, 0, sizeof(params));
1168 6 : wpa_setband_scan_freqs_list(wpa_s, HOSTAPD_MODE_IEEE80211G, ¶ms);
1169 6 : wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
1170 :
1171 6 : if (wpa_supplicant_trigger_scan(wpa_s, ¶ms))
1172 0 : wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
1173 : else
1174 6 : wpa_s->sme.sched_obss_scan = 1;
1175 6 : os_free(params.freqs);
1176 :
1177 6 : eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1178 : sme_obss_scan_timeout, wpa_s, NULL);
1179 : }
1180 :
1181 :
1182 5489 : void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
1183 : {
1184 : const u8 *ie;
1185 5489 : struct wpa_bss *bss = wpa_s->current_bss;
1186 5489 : struct wpa_ssid *ssid = wpa_s->current_ssid;
1187 5489 : struct hostapd_hw_modes *hw_mode = NULL;
1188 : int i;
1189 :
1190 5489 : eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1191 5489 : wpa_s->sme.sched_obss_scan = 0;
1192 5489 : if (!enable)
1193 4583 : return;
1194 :
1195 : /*
1196 : * Schedule OBSS scan if driver is using station SME in wpa_supplicant
1197 : * or it expects OBSS scan to be performed by wpa_supplicant.
1198 : */
1199 919 : if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
1200 906 : (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
1201 893 : ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA)
1202 159 : return;
1203 :
1204 747 : if (!wpa_s->hw.modes)
1205 0 : return;
1206 :
1207 : /* only HT caps in 11g mode are relevant */
1208 747 : for (i = 0; i < wpa_s->hw.num_modes; i++) {
1209 747 : hw_mode = &wpa_s->hw.modes[i];
1210 747 : if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
1211 747 : break;
1212 : }
1213 :
1214 : /* Driver does not support HT40 for 11g or doesn't have 11g. */
1215 1494 : if (i == wpa_s->hw.num_modes || !hw_mode ||
1216 747 : !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1217 0 : return;
1218 :
1219 747 : if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
1220 13 : return; /* Not associated on 2.4 GHz band */
1221 :
1222 : /* Check whether AP supports HT40 */
1223 734 : ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
1224 1453 : if (!ie || ie[1] < 2 ||
1225 719 : !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1226 721 : return; /* AP does not support HT40 */
1227 :
1228 13 : ie = wpa_bss_get_ie(wpa_s->current_bss,
1229 : WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
1230 13 : if (!ie || ie[1] < 14)
1231 10 : return; /* AP does not request OBSS scans */
1232 :
1233 3 : wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
1234 3 : if (wpa_s->sme.obss_scan_int < 10) {
1235 1 : wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
1236 : "replaced with the minimum 10 sec",
1237 1 : wpa_s->sme.obss_scan_int);
1238 1 : wpa_s->sme.obss_scan_int = 10;
1239 : }
1240 3 : wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
1241 3 : wpa_s->sme.obss_scan_int);
1242 3 : eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1243 : sme_obss_scan_timeout, wpa_s, NULL);
1244 : }
1245 :
1246 :
1247 : #ifdef CONFIG_IEEE80211W
1248 :
1249 : static const unsigned int sa_query_max_timeout = 1000;
1250 : static const unsigned int sa_query_retry_timeout = 201;
1251 :
1252 0 : static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
1253 : {
1254 : u32 tu;
1255 : struct os_reltime now, passed;
1256 0 : os_get_reltime(&now);
1257 0 : os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed);
1258 0 : tu = (passed.sec * 1000000 + passed.usec) / 1024;
1259 0 : if (sa_query_max_timeout < tu) {
1260 0 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
1261 0 : sme_stop_sa_query(wpa_s);
1262 0 : wpa_supplicant_deauthenticate(
1263 : wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
1264 0 : return 1;
1265 : }
1266 :
1267 0 : return 0;
1268 : }
1269 :
1270 :
1271 1 : static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
1272 : const u8 *trans_id)
1273 : {
1274 : u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN];
1275 1 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
1276 : MACSTR, MAC2STR(wpa_s->bssid));
1277 1 : wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
1278 : trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1279 1 : req[0] = WLAN_ACTION_SA_QUERY;
1280 1 : req[1] = WLAN_SA_QUERY_REQUEST;
1281 1 : os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1282 1 : if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
1283 1 : wpa_s->own_addr, wpa_s->bssid,
1284 : req, sizeof(req), 0) < 0)
1285 0 : wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
1286 : "Request");
1287 1 : }
1288 :
1289 :
1290 1 : static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
1291 : {
1292 1 : struct wpa_supplicant *wpa_s = eloop_ctx;
1293 : unsigned int timeout, sec, usec;
1294 : u8 *trans_id, *nbuf;
1295 :
1296 1 : if (wpa_s->sme.sa_query_count > 0 &&
1297 0 : sme_check_sa_query_timeout(wpa_s))
1298 0 : return;
1299 :
1300 1 : nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
1301 1 : wpa_s->sme.sa_query_count + 1,
1302 : WLAN_SA_QUERY_TR_ID_LEN);
1303 1 : if (nbuf == NULL)
1304 0 : return;
1305 1 : if (wpa_s->sme.sa_query_count == 0) {
1306 : /* Starting a new SA Query procedure */
1307 1 : os_get_reltime(&wpa_s->sme.sa_query_start);
1308 : }
1309 1 : trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
1310 1 : wpa_s->sme.sa_query_trans_id = nbuf;
1311 1 : wpa_s->sme.sa_query_count++;
1312 :
1313 1 : os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1314 :
1315 1 : timeout = sa_query_retry_timeout;
1316 1 : sec = ((timeout / 1000) * 1024) / 1000;
1317 1 : usec = (timeout % 1000) * 1024;
1318 1 : eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
1319 :
1320 1 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
1321 : wpa_s->sme.sa_query_count);
1322 :
1323 1 : sme_send_sa_query_req(wpa_s, trans_id);
1324 : }
1325 :
1326 :
1327 1 : static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
1328 : {
1329 1 : sme_sa_query_timer(wpa_s, NULL);
1330 1 : }
1331 :
1332 :
1333 79 : static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
1334 : {
1335 79 : eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
1336 79 : os_free(wpa_s->sme.sa_query_trans_id);
1337 79 : wpa_s->sme.sa_query_trans_id = NULL;
1338 79 : wpa_s->sme.sa_query_count = 0;
1339 79 : }
1340 :
1341 :
1342 4 : void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
1343 : const u8 *da, u16 reason_code)
1344 : {
1345 : struct wpa_ssid *ssid;
1346 :
1347 4 : if (wpa_s->wpa_state != WPA_COMPLETED)
1348 0 : return;
1349 4 : ssid = wpa_s->current_ssid;
1350 8 : if (ssid == NULL ||
1351 4 : (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
1352 4 : wpa_s->conf->pmf : ssid->ieee80211w) == NO_MGMT_FRAME_PROTECTION)
1353 0 : return;
1354 4 : if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1355 0 : return;
1356 4 : if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
1357 : reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
1358 2 : return;
1359 2 : if (wpa_s->sme.sa_query_count > 0)
1360 1 : return;
1361 :
1362 1 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
1363 : "possible AP/STA state mismatch - trigger SA Query");
1364 1 : sme_start_sa_query(wpa_s);
1365 : }
1366 :
1367 :
1368 1 : void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
1369 : const u8 *data, size_t len)
1370 : {
1371 : int i;
1372 :
1373 1 : if (wpa_s->sme.sa_query_trans_id == NULL ||
1374 1 : len < 1 + WLAN_SA_QUERY_TR_ID_LEN ||
1375 1 : data[0] != WLAN_SA_QUERY_RESPONSE)
1376 0 : return;
1377 1 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
1378 : MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
1379 :
1380 1 : if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1381 0 : return;
1382 :
1383 1 : for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
1384 1 : if (os_memcmp(wpa_s->sme.sa_query_trans_id +
1385 : i * WLAN_SA_QUERY_TR_ID_LEN,
1386 : data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
1387 1 : break;
1388 : }
1389 :
1390 1 : if (i >= wpa_s->sme.sa_query_count) {
1391 0 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
1392 : "transaction identifier found");
1393 0 : return;
1394 : }
1395 :
1396 1 : wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
1397 : "from " MACSTR, MAC2STR(sa));
1398 1 : sme_stop_sa_query(wpa_s);
1399 : }
1400 :
1401 : #endif /* CONFIG_IEEE80211W */
|
