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wpa_supplicant: Basic support for PBSS/PCP
[thirdparty/hostap.git] / wpa_supplicant / events.c
1 /*
2 * WPA Supplicant - Driver event processing
3 * Copyright (c) 2003-2015, 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 "eapol_supp/eapol_supp_sm.h"
13 #include "rsn_supp/wpa.h"
14 #include "eloop.h"
15 #include "config.h"
16 #include "l2_packet/l2_packet.h"
17 #include "wpa_supplicant_i.h"
18 #include "driver_i.h"
19 #include "pcsc_funcs.h"
20 #include "rsn_supp/preauth.h"
21 #include "rsn_supp/pmksa_cache.h"
22 #include "common/wpa_ctrl.h"
23 #include "eap_peer/eap.h"
24 #include "ap/hostapd.h"
25 #include "p2p/p2p.h"
26 #include "fst/fst.h"
27 #include "wnm_sta.h"
28 #include "notify.h"
29 #include "common/ieee802_11_defs.h"
30 #include "common/ieee802_11_common.h"
31 #include "crypto/random.h"
32 #include "blacklist.h"
33 #include "wpas_glue.h"
34 #include "wps_supplicant.h"
35 #include "ibss_rsn.h"
36 #include "sme.h"
37 #include "gas_query.h"
38 #include "p2p_supplicant.h"
39 #include "bgscan.h"
40 #include "autoscan.h"
41 #include "ap.h"
42 #include "bss.h"
43 #include "scan.h"
44 #include "offchannel.h"
45 #include "interworking.h"
46 #include "mesh.h"
47 #include "mesh_mpm.h"
48 #include "wmm_ac.h"
49
50
51 #ifndef CONFIG_NO_SCAN_PROCESSING
52 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
53 int new_scan, int own_request);
54 #endif /* CONFIG_NO_SCAN_PROCESSING */
55
56
57 static int wpas_temp_disabled(struct wpa_supplicant *wpa_s,
58 struct wpa_ssid *ssid)
59 {
60 struct os_reltime now;
61
62 if (ssid == NULL || ssid->disabled_until.sec == 0)
63 return 0;
64
65 os_get_reltime(&now);
66 if (ssid->disabled_until.sec > now.sec)
67 return ssid->disabled_until.sec - now.sec;
68
69 wpas_clear_temp_disabled(wpa_s, ssid, 0);
70
71 return 0;
72 }
73
74
75 #ifndef CONFIG_NO_SCAN_PROCESSING
76 /**
77 * wpas_reenabled_network_time - Time until first network is re-enabled
78 * @wpa_s: Pointer to wpa_supplicant data
79 * Returns: If all enabled networks are temporarily disabled, returns the time
80 * (in sec) until the first network is re-enabled. Otherwise returns 0.
81 *
82 * This function is used in case all enabled networks are temporarily disabled,
83 * in which case it returns the time (in sec) that the first network will be
84 * re-enabled. The function assumes that at least one network is enabled.
85 */
86 static int wpas_reenabled_network_time(struct wpa_supplicant *wpa_s)
87 {
88 struct wpa_ssid *ssid;
89 int disabled_for, res = 0;
90
91 #ifdef CONFIG_INTERWORKING
92 if (wpa_s->conf->auto_interworking && wpa_s->conf->interworking &&
93 wpa_s->conf->cred)
94 return 0;
95 #endif /* CONFIG_INTERWORKING */
96
97 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
98 if (ssid->disabled)
99 continue;
100
101 disabled_for = wpas_temp_disabled(wpa_s, ssid);
102 if (!disabled_for)
103 return 0;
104
105 if (!res || disabled_for < res)
106 res = disabled_for;
107 }
108
109 return res;
110 }
111 #endif /* CONFIG_NO_SCAN_PROCESSING */
112
113
114 void wpas_network_reenabled(void *eloop_ctx, void *timeout_ctx)
115 {
116 struct wpa_supplicant *wpa_s = eloop_ctx;
117
118 if (wpa_s->disconnected || wpa_s->wpa_state != WPA_SCANNING)
119 return;
120
121 wpa_dbg(wpa_s, MSG_DEBUG,
122 "Try to associate due to network getting re-enabled");
123 if (wpa_supplicant_fast_associate(wpa_s) != 1) {
124 wpa_supplicant_cancel_sched_scan(wpa_s);
125 wpa_supplicant_req_scan(wpa_s, 0, 0);
126 }
127 }
128
129
130 static struct wpa_bss * wpa_supplicant_get_new_bss(
131 struct wpa_supplicant *wpa_s, const u8 *bssid)
132 {
133 struct wpa_bss *bss = NULL;
134 struct wpa_ssid *ssid = wpa_s->current_ssid;
135
136 if (ssid->ssid_len > 0)
137 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
138 if (!bss)
139 bss = wpa_bss_get_bssid(wpa_s, bssid);
140
141 return bss;
142 }
143
144
145 static void wpa_supplicant_update_current_bss(struct wpa_supplicant *wpa_s)
146 {
147 struct wpa_bss *bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
148
149 if (!bss) {
150 wpa_supplicant_update_scan_results(wpa_s);
151
152 /* Get the BSS from the new scan results */
153 bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
154 }
155
156 if (bss)
157 wpa_s->current_bss = bss;
158 }
159
160
161 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
162 {
163 struct wpa_ssid *ssid, *old_ssid;
164 u8 drv_ssid[SSID_MAX_LEN];
165 size_t drv_ssid_len;
166 int res;
167
168 if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid) {
169 wpa_supplicant_update_current_bss(wpa_s);
170
171 if (wpa_s->current_ssid->ssid_len == 0)
172 return 0; /* current profile still in use */
173 res = wpa_drv_get_ssid(wpa_s, drv_ssid);
174 if (res < 0) {
175 wpa_msg(wpa_s, MSG_INFO,
176 "Failed to read SSID from driver");
177 return 0; /* try to use current profile */
178 }
179 drv_ssid_len = res;
180
181 if (drv_ssid_len == wpa_s->current_ssid->ssid_len &&
182 os_memcmp(drv_ssid, wpa_s->current_ssid->ssid,
183 drv_ssid_len) == 0)
184 return 0; /* current profile still in use */
185
186 wpa_msg(wpa_s, MSG_DEBUG,
187 "Driver-initiated BSS selection changed the SSID to %s",
188 wpa_ssid_txt(drv_ssid, drv_ssid_len));
189 /* continue selecting a new network profile */
190 }
191
192 wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
193 "information");
194 ssid = wpa_supplicant_get_ssid(wpa_s);
195 if (ssid == NULL) {
196 wpa_msg(wpa_s, MSG_INFO,
197 "No network configuration found for the current AP");
198 return -1;
199 }
200
201 if (wpas_network_disabled(wpa_s, ssid)) {
202 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
203 return -1;
204 }
205
206 if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
207 disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
208 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
209 return -1;
210 }
211
212 res = wpas_temp_disabled(wpa_s, ssid);
213 if (res > 0) {
214 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
215 "disabled for %d second(s)", res);
216 return -1;
217 }
218
219 wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
220 "current AP");
221 if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
222 u8 wpa_ie[80];
223 size_t wpa_ie_len = sizeof(wpa_ie);
224 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
225 wpa_ie, &wpa_ie_len) < 0)
226 wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
227 } else {
228 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
229 }
230
231 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
232 eapol_sm_invalidate_cached_session(wpa_s->eapol);
233 old_ssid = wpa_s->current_ssid;
234 wpa_s->current_ssid = ssid;
235
236 wpa_supplicant_update_current_bss(wpa_s);
237
238 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
239 wpa_supplicant_initiate_eapol(wpa_s);
240 if (old_ssid != wpa_s->current_ssid)
241 wpas_notify_network_changed(wpa_s);
242
243 return 0;
244 }
245
246
247 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
248 {
249 struct wpa_supplicant *wpa_s = eloop_ctx;
250
251 if (wpa_s->countermeasures) {
252 wpa_s->countermeasures = 0;
253 wpa_drv_set_countermeasures(wpa_s, 0);
254 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
255
256 /*
257 * It is possible that the device is sched scanning, which means
258 * that a connection attempt will be done only when we receive
259 * scan results. However, in this case, it would be preferable
260 * to scan and connect immediately, so cancel the sched_scan and
261 * issue a regular scan flow.
262 */
263 wpa_supplicant_cancel_sched_scan(wpa_s);
264 wpa_supplicant_req_scan(wpa_s, 0, 0);
265 }
266 }
267
268
269 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
270 {
271 int bssid_changed;
272
273 wnm_bss_keep_alive_deinit(wpa_s);
274
275 #ifdef CONFIG_IBSS_RSN
276 ibss_rsn_deinit(wpa_s->ibss_rsn);
277 wpa_s->ibss_rsn = NULL;
278 #endif /* CONFIG_IBSS_RSN */
279
280 #ifdef CONFIG_AP
281 wpa_supplicant_ap_deinit(wpa_s);
282 #endif /* CONFIG_AP */
283
284 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
285 return;
286
287 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
288 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
289 os_memset(wpa_s->bssid, 0, ETH_ALEN);
290 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
291 sme_clear_on_disassoc(wpa_s);
292 wpa_s->current_bss = NULL;
293 wpa_s->assoc_freq = 0;
294
295 if (bssid_changed)
296 wpas_notify_bssid_changed(wpa_s);
297
298 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
299 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
300 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
301 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
302 wpa_s->ap_ies_from_associnfo = 0;
303 wpa_s->current_ssid = NULL;
304 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
305 wpa_s->key_mgmt = 0;
306
307 wpas_rrm_reset(wpa_s);
308 wpa_s->wnmsleep_used = 0;
309 }
310
311
312 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
313 {
314 struct wpa_ie_data ie;
315 int pmksa_set = -1;
316 size_t i;
317
318 if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
319 ie.pmkid == NULL)
320 return;
321
322 for (i = 0; i < ie.num_pmkid; i++) {
323 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
324 ie.pmkid + i * PMKID_LEN,
325 NULL, NULL, 0);
326 if (pmksa_set == 0) {
327 eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
328 break;
329 }
330 }
331
332 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
333 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
334 }
335
336
337 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
338 union wpa_event_data *data)
339 {
340 if (data == NULL) {
341 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
342 "event");
343 return;
344 }
345 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
346 " index=%d preauth=%d",
347 MAC2STR(data->pmkid_candidate.bssid),
348 data->pmkid_candidate.index,
349 data->pmkid_candidate.preauth);
350
351 pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
352 data->pmkid_candidate.index,
353 data->pmkid_candidate.preauth);
354 }
355
356
357 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
358 {
359 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
360 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
361 return 0;
362
363 #ifdef IEEE8021X_EAPOL
364 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
365 wpa_s->current_ssid &&
366 !(wpa_s->current_ssid->eapol_flags &
367 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
368 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
369 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
370 * plaintext or static WEP keys). */
371 return 0;
372 }
373 #endif /* IEEE8021X_EAPOL */
374
375 return 1;
376 }
377
378
379 /**
380 * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
381 * @wpa_s: pointer to wpa_supplicant data
382 * @ssid: Configuration data for the network
383 * Returns: 0 on success, -1 on failure
384 *
385 * This function is called when starting authentication with a network that is
386 * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
387 */
388 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
389 struct wpa_ssid *ssid)
390 {
391 #ifdef IEEE8021X_EAPOL
392 #ifdef PCSC_FUNCS
393 int aka = 0, sim = 0;
394
395 if ((ssid != NULL && ssid->eap.pcsc == NULL) ||
396 wpa_s->scard != NULL || wpa_s->conf->external_sim)
397 return 0;
398
399 if (ssid == NULL || ssid->eap.eap_methods == NULL) {
400 sim = 1;
401 aka = 1;
402 } else {
403 struct eap_method_type *eap = ssid->eap.eap_methods;
404 while (eap->vendor != EAP_VENDOR_IETF ||
405 eap->method != EAP_TYPE_NONE) {
406 if (eap->vendor == EAP_VENDOR_IETF) {
407 if (eap->method == EAP_TYPE_SIM)
408 sim = 1;
409 else if (eap->method == EAP_TYPE_AKA ||
410 eap->method == EAP_TYPE_AKA_PRIME)
411 aka = 1;
412 }
413 eap++;
414 }
415 }
416
417 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
418 sim = 0;
419 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
420 eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
421 NULL)
422 aka = 0;
423
424 if (!sim && !aka) {
425 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
426 "use SIM, but neither EAP-SIM nor EAP-AKA are "
427 "enabled");
428 return 0;
429 }
430
431 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
432 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
433
434 wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader);
435 if (wpa_s->scard == NULL) {
436 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
437 "(pcsc-lite)");
438 return -1;
439 }
440 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
441 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
442 #endif /* PCSC_FUNCS */
443 #endif /* IEEE8021X_EAPOL */
444
445 return 0;
446 }
447
448
449 #ifndef CONFIG_NO_SCAN_PROCESSING
450
451 static int has_wep_key(struct wpa_ssid *ssid)
452 {
453 int i;
454
455 for (i = 0; i < NUM_WEP_KEYS; i++) {
456 if (ssid->wep_key_len[i])
457 return 1;
458 }
459
460 return 0;
461 }
462
463
464 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
465 struct wpa_ssid *ssid)
466 {
467 int privacy = 0;
468
469 if (ssid->mixed_cell)
470 return 1;
471
472 #ifdef CONFIG_WPS
473 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
474 return 1;
475 #endif /* CONFIG_WPS */
476
477 if (has_wep_key(ssid))
478 privacy = 1;
479
480 #ifdef IEEE8021X_EAPOL
481 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
482 ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
483 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
484 privacy = 1;
485 #endif /* IEEE8021X_EAPOL */
486
487 if (wpa_key_mgmt_wpa(ssid->key_mgmt))
488 privacy = 1;
489
490 if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)
491 privacy = 1;
492
493 if (bss->caps & IEEE80211_CAP_PRIVACY)
494 return privacy;
495 return !privacy;
496 }
497
498
499 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
500 struct wpa_ssid *ssid,
501 struct wpa_bss *bss)
502 {
503 struct wpa_ie_data ie;
504 int proto_match = 0;
505 const u8 *rsn_ie, *wpa_ie;
506 int ret;
507 int wep_ok;
508
509 ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
510 if (ret >= 0)
511 return ret;
512
513 /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
514 wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
515 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
516 ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
517 (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
518
519 rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
520 while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
521 proto_match++;
522
523 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
524 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - parse "
525 "failed");
526 break;
527 }
528
529 if (wep_ok &&
530 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
531 {
532 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
533 "in RSN IE");
534 return 1;
535 }
536
537 if (!(ie.proto & ssid->proto)) {
538 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - proto "
539 "mismatch");
540 break;
541 }
542
543 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
544 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - PTK "
545 "cipher mismatch");
546 break;
547 }
548
549 if (!(ie.group_cipher & ssid->group_cipher)) {
550 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - GTK "
551 "cipher mismatch");
552 break;
553 }
554
555 if (!(ie.key_mgmt & ssid->key_mgmt)) {
556 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - key mgmt "
557 "mismatch");
558 break;
559 }
560
561 #ifdef CONFIG_IEEE80211W
562 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
563 wpas_get_ssid_pmf(wpa_s, ssid) ==
564 MGMT_FRAME_PROTECTION_REQUIRED) {
565 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - no mgmt "
566 "frame protection");
567 break;
568 }
569 #endif /* CONFIG_IEEE80211W */
570 if ((ie.capabilities & WPA_CAPABILITY_MFPR) &&
571 wpas_get_ssid_pmf(wpa_s, ssid) ==
572 NO_MGMT_FRAME_PROTECTION) {
573 wpa_dbg(wpa_s, MSG_DEBUG,
574 " skip RSN IE - no mgmt frame protection enabled but AP requires it");
575 break;
576 }
577
578 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on RSN IE");
579 return 1;
580 }
581
582 wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
583 while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
584 proto_match++;
585
586 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
587 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - parse "
588 "failed");
589 break;
590 }
591
592 if (wep_ok &&
593 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
594 {
595 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
596 "in WPA IE");
597 return 1;
598 }
599
600 if (!(ie.proto & ssid->proto)) {
601 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - proto "
602 "mismatch");
603 break;
604 }
605
606 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
607 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - PTK "
608 "cipher mismatch");
609 break;
610 }
611
612 if (!(ie.group_cipher & ssid->group_cipher)) {
613 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - GTK "
614 "cipher mismatch");
615 break;
616 }
617
618 if (!(ie.key_mgmt & ssid->key_mgmt)) {
619 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - key mgmt "
620 "mismatch");
621 break;
622 }
623
624 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on WPA IE");
625 return 1;
626 }
627
628 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
629 !rsn_ie) {
630 wpa_dbg(wpa_s, MSG_DEBUG, " allow for non-WPA IEEE 802.1X");
631 return 1;
632 }
633
634 if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
635 wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
636 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no WPA/RSN proto match");
637 return 0;
638 }
639
640 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) &&
641 wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) {
642 wpa_dbg(wpa_s, MSG_DEBUG, " allow in OSEN");
643 return 1;
644 }
645
646 if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
647 wpa_dbg(wpa_s, MSG_DEBUG, " allow in non-WPA/WPA2");
648 return 1;
649 }
650
651 wpa_dbg(wpa_s, MSG_DEBUG, " reject due to mismatch with "
652 "WPA/WPA2");
653
654 return 0;
655 }
656
657
658 static int freq_allowed(int *freqs, int freq)
659 {
660 int i;
661
662 if (freqs == NULL)
663 return 1;
664
665 for (i = 0; freqs[i]; i++)
666 if (freqs[i] == freq)
667 return 1;
668 return 0;
669 }
670
671
672 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
673 {
674 const struct hostapd_hw_modes *mode = NULL, *modes;
675 const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
676 const u8 *rate_ie;
677 int i, j, k;
678
679 if (bss->freq == 0)
680 return 1; /* Cannot do matching without knowing band */
681
682 modes = wpa_s->hw.modes;
683 if (modes == NULL) {
684 /*
685 * The driver does not provide any additional information
686 * about the utilized hardware, so allow the connection attempt
687 * to continue.
688 */
689 return 1;
690 }
691
692 for (i = 0; i < wpa_s->hw.num_modes; i++) {
693 for (j = 0; j < modes[i].num_channels; j++) {
694 int freq = modes[i].channels[j].freq;
695 if (freq == bss->freq) {
696 if (mode &&
697 mode->mode == HOSTAPD_MODE_IEEE80211G)
698 break; /* do not allow 802.11b replace
699 * 802.11g */
700 mode = &modes[i];
701 break;
702 }
703 }
704 }
705
706 if (mode == NULL)
707 return 0;
708
709 for (i = 0; i < (int) sizeof(scan_ie); i++) {
710 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
711 if (rate_ie == NULL)
712 continue;
713
714 for (j = 2; j < rate_ie[1] + 2; j++) {
715 int flagged = !!(rate_ie[j] & 0x80);
716 int r = (rate_ie[j] & 0x7f) * 5;
717
718 /*
719 * IEEE Std 802.11n-2009 7.3.2.2:
720 * The new BSS Membership selector value is encoded
721 * like a legacy basic rate, but it is not a rate and
722 * only indicates if the BSS members are required to
723 * support the mandatory features of Clause 20 [HT PHY]
724 * in order to join the BSS.
725 */
726 if (flagged && ((rate_ie[j] & 0x7f) ==
727 BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
728 if (!ht_supported(mode)) {
729 wpa_dbg(wpa_s, MSG_DEBUG,
730 " hardware does not support "
731 "HT PHY");
732 return 0;
733 }
734 continue;
735 }
736
737 /* There's also a VHT selector for 802.11ac */
738 if (flagged && ((rate_ie[j] & 0x7f) ==
739 BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) {
740 if (!vht_supported(mode)) {
741 wpa_dbg(wpa_s, MSG_DEBUG,
742 " hardware does not support "
743 "VHT PHY");
744 return 0;
745 }
746 continue;
747 }
748
749 if (!flagged)
750 continue;
751
752 /* check for legacy basic rates */
753 for (k = 0; k < mode->num_rates; k++) {
754 if (mode->rates[k] == r)
755 break;
756 }
757 if (k == mode->num_rates) {
758 /*
759 * IEEE Std 802.11-2007 7.3.2.2 demands that in
760 * order to join a BSS all required rates
761 * have to be supported by the hardware.
762 */
763 wpa_dbg(wpa_s, MSG_DEBUG,
764 " hardware does not support required rate %d.%d Mbps (freq=%d mode==%d num_rates=%d)",
765 r / 10, r % 10,
766 bss->freq, mode->mode, mode->num_rates);
767 return 0;
768 }
769 }
770 }
771
772 return 1;
773 }
774
775
776 /*
777 * Test whether BSS is in an ESS.
778 * This is done differently in DMG (60 GHz) and non-DMG bands
779 */
780 static int bss_is_ess(struct wpa_bss *bss)
781 {
782 if (bss_is_dmg(bss)) {
783 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
784 IEEE80211_CAP_DMG_AP;
785 }
786
787 return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
788 IEEE80211_CAP_ESS);
789 }
790
791
792 static int match_mac_mask(const u8 *addr_a, const u8 *addr_b, const u8 *mask)
793 {
794 size_t i;
795
796 for (i = 0; i < ETH_ALEN; i++) {
797 if ((addr_a[i] & mask[i]) != (addr_b[i] & mask[i]))
798 return 0;
799 }
800 return 1;
801 }
802
803
804 static int addr_in_list(const u8 *addr, const u8 *list, size_t num)
805 {
806 size_t i;
807
808 for (i = 0; i < num; i++) {
809 const u8 *a = list + i * ETH_ALEN * 2;
810 const u8 *m = a + ETH_ALEN;
811
812 if (match_mac_mask(a, addr, m))
813 return 1;
814 }
815 return 0;
816 }
817
818
819 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
820 int i, struct wpa_bss *bss,
821 struct wpa_ssid *group,
822 int only_first_ssid)
823 {
824 u8 wpa_ie_len, rsn_ie_len;
825 int wpa;
826 struct wpa_blacklist *e;
827 const u8 *ie;
828 struct wpa_ssid *ssid;
829 int osen;
830
831 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
832 wpa_ie_len = ie ? ie[1] : 0;
833
834 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
835 rsn_ie_len = ie ? ie[1] : 0;
836
837 ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
838 osen = ie != NULL;
839
840 wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
841 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d freq=%d %s%s%s",
842 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
843 wpa_ie_len, rsn_ie_len, bss->caps, bss->level, bss->freq,
844 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
845 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
846 wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
847 " p2p" : "",
848 osen ? " osen=1" : "");
849
850 e = wpa_blacklist_get(wpa_s, bss->bssid);
851 if (e) {
852 int limit = 1;
853 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
854 /*
855 * When only a single network is enabled, we can
856 * trigger blacklisting on the first failure. This
857 * should not be done with multiple enabled networks to
858 * avoid getting forced to move into a worse ESS on
859 * single error if there are no other BSSes of the
860 * current ESS.
861 */
862 limit = 0;
863 }
864 if (e->count > limit) {
865 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
866 "(count=%d limit=%d)", e->count, limit);
867 return NULL;
868 }
869 }
870
871 if (bss->ssid_len == 0) {
872 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID not known");
873 return NULL;
874 }
875
876 if (disallowed_bssid(wpa_s, bss->bssid)) {
877 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID disallowed");
878 return NULL;
879 }
880
881 if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
882 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID disallowed");
883 return NULL;
884 }
885
886 wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
887
888 for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) {
889 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
890 int res;
891
892 if (wpas_network_disabled(wpa_s, ssid)) {
893 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled");
894 continue;
895 }
896
897 res = wpas_temp_disabled(wpa_s, ssid);
898 if (res > 0) {
899 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled "
900 "temporarily for %d second(s)", res);
901 continue;
902 }
903
904 #ifdef CONFIG_WPS
905 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
906 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
907 "(WPS)");
908 continue;
909 }
910
911 if (wpa && ssid->ssid_len == 0 &&
912 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
913 check_ssid = 0;
914
915 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
916 /* Only allow wildcard SSID match if an AP
917 * advertises active WPS operation that matches
918 * with our mode. */
919 check_ssid = 1;
920 if (ssid->ssid_len == 0 &&
921 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
922 check_ssid = 0;
923 }
924 #endif /* CONFIG_WPS */
925
926 if (ssid->bssid_set && ssid->ssid_len == 0 &&
927 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
928 check_ssid = 0;
929
930 if (check_ssid &&
931 (bss->ssid_len != ssid->ssid_len ||
932 os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
933 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID mismatch");
934 continue;
935 }
936
937 if (ssid->bssid_set &&
938 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
939 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID mismatch");
940 continue;
941 }
942
943 /* check blacklist */
944 if (ssid->num_bssid_blacklist &&
945 addr_in_list(bss->bssid, ssid->bssid_blacklist,
946 ssid->num_bssid_blacklist)) {
947 wpa_dbg(wpa_s, MSG_DEBUG,
948 " skip - BSSID blacklisted");
949 continue;
950 }
951
952 /* if there is a whitelist, only accept those APs */
953 if (ssid->num_bssid_whitelist &&
954 !addr_in_list(bss->bssid, ssid->bssid_whitelist,
955 ssid->num_bssid_whitelist)) {
956 wpa_dbg(wpa_s, MSG_DEBUG,
957 " skip - BSSID not in whitelist");
958 continue;
959 }
960
961 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
962 continue;
963
964 if (!osen && !wpa &&
965 !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
966 !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
967 !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
968 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-WPA network "
969 "not allowed");
970 continue;
971 }
972
973 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
974 has_wep_key(ssid)) {
975 wpa_dbg(wpa_s, MSG_DEBUG, " skip - ignore WPA/WPA2 AP for WEP network block");
976 continue;
977 }
978
979 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) {
980 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-OSEN network "
981 "not allowed");
982 continue;
983 }
984
985 if (!wpa_supplicant_match_privacy(bss, ssid)) {
986 wpa_dbg(wpa_s, MSG_DEBUG, " skip - privacy "
987 "mismatch");
988 continue;
989 }
990
991 if (!bss_is_ess(bss) && !bss_is_pbss(bss)) {
992 wpa_dbg(wpa_s, MSG_DEBUG, " skip - neither ESS nor PBSS network");
993 continue;
994 }
995
996 if (ssid->pbss != bss_is_pbss(bss)) {
997 wpa_dbg(wpa_s, MSG_DEBUG, " skip - PBSS mismatch (ssid %d bss %d)",
998 ssid->pbss, bss_is_pbss(bss));
999 continue;
1000 }
1001
1002 if (!freq_allowed(ssid->freq_list, bss->freq)) {
1003 wpa_dbg(wpa_s, MSG_DEBUG, " skip - frequency not "
1004 "allowed");
1005 continue;
1006 }
1007
1008 if (!rate_match(wpa_s, bss)) {
1009 wpa_dbg(wpa_s, MSG_DEBUG, " skip - rate sets do "
1010 "not match");
1011 continue;
1012 }
1013
1014 #ifdef CONFIG_P2P
1015 if (ssid->p2p_group &&
1016 !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
1017 !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
1018 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no P2P IE seen");
1019 continue;
1020 }
1021
1022 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
1023 struct wpabuf *p2p_ie;
1024 u8 dev_addr[ETH_ALEN];
1025
1026 ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
1027 if (ie == NULL) {
1028 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no P2P element");
1029 continue;
1030 }
1031 p2p_ie = wpa_bss_get_vendor_ie_multi(
1032 bss, P2P_IE_VENDOR_TYPE);
1033 if (p2p_ie == NULL) {
1034 wpa_dbg(wpa_s, MSG_DEBUG, " skip - could not fetch P2P element");
1035 continue;
1036 }
1037
1038 if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
1039 || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
1040 ETH_ALEN) != 0) {
1041 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no matching GO P2P Device Address in P2P element");
1042 wpabuf_free(p2p_ie);
1043 continue;
1044 }
1045 wpabuf_free(p2p_ie);
1046 }
1047
1048 /*
1049 * TODO: skip the AP if its P2P IE has Group Formation
1050 * bit set in the P2P Group Capability Bitmap and we
1051 * are not in Group Formation with that device.
1052 */
1053 #endif /* CONFIG_P2P */
1054
1055 if (os_reltime_before(&bss->last_update, &wpa_s->scan_min_time))
1056 {
1057 struct os_reltime diff;
1058
1059 os_reltime_sub(&wpa_s->scan_min_time,
1060 &bss->last_update, &diff);
1061 wpa_dbg(wpa_s, MSG_DEBUG,
1062 " skip - scan result not recent enough (%u.%06u seconds too old)",
1063 (unsigned int) diff.sec,
1064 (unsigned int) diff.usec);
1065 continue;
1066 }
1067
1068 /* Matching configuration found */
1069 return ssid;
1070 }
1071
1072 /* No matching configuration found */
1073 return NULL;
1074 }
1075
1076
1077 static struct wpa_bss *
1078 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
1079 struct wpa_ssid *group,
1080 struct wpa_ssid **selected_ssid,
1081 int only_first_ssid)
1082 {
1083 unsigned int i;
1084
1085 if (only_first_ssid)
1086 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d",
1087 group->id);
1088 else
1089 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
1090 group->priority);
1091
1092 for (i = 0; i < wpa_s->last_scan_res_used; i++) {
1093 struct wpa_bss *bss = wpa_s->last_scan_res[i];
1094 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group,
1095 only_first_ssid);
1096 if (!*selected_ssid)
1097 continue;
1098 wpa_dbg(wpa_s, MSG_DEBUG, " selected BSS " MACSTR
1099 " ssid='%s'",
1100 MAC2STR(bss->bssid),
1101 wpa_ssid_txt(bss->ssid, bss->ssid_len));
1102 return bss;
1103 }
1104
1105 return NULL;
1106 }
1107
1108
1109 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
1110 struct wpa_ssid **selected_ssid)
1111 {
1112 struct wpa_bss *selected = NULL;
1113 int prio;
1114 struct wpa_ssid *next_ssid = NULL;
1115 struct wpa_ssid *ssid;
1116
1117 if (wpa_s->last_scan_res == NULL ||
1118 wpa_s->last_scan_res_used == 0)
1119 return NULL; /* no scan results from last update */
1120
1121 if (wpa_s->next_ssid) {
1122 /* check that next_ssid is still valid */
1123 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1124 if (ssid == wpa_s->next_ssid)
1125 break;
1126 }
1127 next_ssid = ssid;
1128 wpa_s->next_ssid = NULL;
1129 }
1130
1131 while (selected == NULL) {
1132 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1133 if (next_ssid && next_ssid->priority ==
1134 wpa_s->conf->pssid[prio]->priority) {
1135 selected = wpa_supplicant_select_bss(
1136 wpa_s, next_ssid, selected_ssid, 1);
1137 if (selected)
1138 break;
1139 }
1140 selected = wpa_supplicant_select_bss(
1141 wpa_s, wpa_s->conf->pssid[prio],
1142 selected_ssid, 0);
1143 if (selected)
1144 break;
1145 }
1146
1147 if (selected == NULL && wpa_s->blacklist &&
1148 !wpa_s->countermeasures) {
1149 wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
1150 "blacklist and try again");
1151 wpa_blacklist_clear(wpa_s);
1152 wpa_s->blacklist_cleared++;
1153 } else if (selected == NULL)
1154 break;
1155 }
1156
1157 ssid = *selected_ssid;
1158 if (selected && ssid && ssid->mem_only_psk && !ssid->psk_set &&
1159 !ssid->passphrase && !ssid->ext_psk) {
1160 const char *field_name, *txt = NULL;
1161
1162 wpa_dbg(wpa_s, MSG_DEBUG,
1163 "PSK/passphrase not yet available for the selected network");
1164
1165 wpas_notify_network_request(wpa_s, ssid,
1166 WPA_CTRL_REQ_PSK_PASSPHRASE, NULL);
1167
1168 field_name = wpa_supplicant_ctrl_req_to_string(
1169 WPA_CTRL_REQ_PSK_PASSPHRASE, NULL, &txt);
1170 if (field_name == NULL)
1171 return NULL;
1172
1173 wpas_send_ctrl_req(wpa_s, ssid, field_name, txt);
1174
1175 selected = NULL;
1176 }
1177
1178 return selected;
1179 }
1180
1181
1182 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
1183 int timeout_sec, int timeout_usec)
1184 {
1185 if (!wpa_supplicant_enabled_networks(wpa_s)) {
1186 /*
1187 * No networks are enabled; short-circuit request so
1188 * we don't wait timeout seconds before transitioning
1189 * to INACTIVE state.
1190 */
1191 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
1192 "since there are no enabled networks");
1193 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
1194 return;
1195 }
1196
1197 wpa_s->scan_for_connection = 1;
1198 wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
1199 }
1200
1201
1202 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
1203 struct wpa_bss *selected,
1204 struct wpa_ssid *ssid)
1205 {
1206 if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
1207 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
1208 "PBC session overlap");
1209 wpas_notify_wps_event_pbc_overlap(wpa_s);
1210 #ifdef CONFIG_P2P
1211 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
1212 wpa_s->p2p_in_provisioning) {
1213 eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb,
1214 wpa_s, NULL);
1215 return -1;
1216 }
1217 #endif /* CONFIG_P2P */
1218
1219 #ifdef CONFIG_WPS
1220 wpas_wps_pbc_overlap(wpa_s);
1221 wpas_wps_cancel(wpa_s);
1222 #endif /* CONFIG_WPS */
1223 return -1;
1224 }
1225
1226 wpa_msg(wpa_s, MSG_DEBUG,
1227 "Considering connect request: reassociate: %d selected: "
1228 MACSTR " bssid: " MACSTR " pending: " MACSTR
1229 " wpa_state: %s ssid=%p current_ssid=%p",
1230 wpa_s->reassociate, MAC2STR(selected->bssid),
1231 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1232 wpa_supplicant_state_txt(wpa_s->wpa_state),
1233 ssid, wpa_s->current_ssid);
1234
1235 /*
1236 * Do not trigger new association unless the BSSID has changed or if
1237 * reassociation is requested. If we are in process of associating with
1238 * the selected BSSID, do not trigger new attempt.
1239 */
1240 if (wpa_s->reassociate ||
1241 (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1242 ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1243 wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1244 (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1245 os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1246 0) ||
1247 (is_zero_ether_addr(wpa_s->pending_bssid) &&
1248 ssid != wpa_s->current_ssid)))) {
1249 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1250 wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1251 return 0;
1252 }
1253 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1254 MAC2STR(selected->bssid));
1255 wpa_supplicant_associate(wpa_s, selected, ssid);
1256 } else {
1257 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1258 "connect with the selected AP");
1259 }
1260
1261 return 0;
1262 }
1263
1264
1265 static struct wpa_ssid *
1266 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1267 {
1268 int prio;
1269 struct wpa_ssid *ssid;
1270
1271 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1272 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1273 {
1274 if (wpas_network_disabled(wpa_s, ssid))
1275 continue;
1276 if (ssid->mode == IEEE80211_MODE_IBSS ||
1277 ssid->mode == IEEE80211_MODE_AP ||
1278 ssid->mode == IEEE80211_MODE_MESH)
1279 return ssid;
1280 }
1281 }
1282 return NULL;
1283 }
1284
1285
1286 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1287 * on BSS added and BSS changed events */
1288 static void wpa_supplicant_rsn_preauth_scan_results(
1289 struct wpa_supplicant *wpa_s)
1290 {
1291 struct wpa_bss *bss;
1292
1293 if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1294 return;
1295
1296 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1297 const u8 *ssid, *rsn;
1298
1299 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1300 if (ssid == NULL)
1301 continue;
1302
1303 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1304 if (rsn == NULL)
1305 continue;
1306
1307 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1308 }
1309
1310 }
1311
1312
1313 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1314 struct wpa_bss *selected,
1315 struct wpa_ssid *ssid)
1316 {
1317 struct wpa_bss *current_bss = NULL;
1318 #ifndef CONFIG_NO_ROAMING
1319 int min_diff;
1320 #endif /* CONFIG_NO_ROAMING */
1321
1322 if (wpa_s->reassociate)
1323 return 1; /* explicit request to reassociate */
1324 if (wpa_s->wpa_state < WPA_ASSOCIATED)
1325 return 1; /* we are not associated; continue */
1326 if (wpa_s->current_ssid == NULL)
1327 return 1; /* unknown current SSID */
1328 if (wpa_s->current_ssid != ssid)
1329 return 1; /* different network block */
1330
1331 if (wpas_driver_bss_selection(wpa_s))
1332 return 0; /* Driver-based roaming */
1333
1334 if (wpa_s->current_ssid->ssid)
1335 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1336 wpa_s->current_ssid->ssid,
1337 wpa_s->current_ssid->ssid_len);
1338 if (!current_bss)
1339 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1340
1341 if (!current_bss)
1342 return 1; /* current BSS not seen in scan results */
1343
1344 if (current_bss == selected)
1345 return 0;
1346
1347 if (selected->last_update_idx > current_bss->last_update_idx)
1348 return 1; /* current BSS not seen in the last scan */
1349
1350 #ifndef CONFIG_NO_ROAMING
1351 wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1352 wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR
1353 " level=%d snr=%d est_throughput=%u",
1354 MAC2STR(current_bss->bssid), current_bss->level,
1355 current_bss->snr, current_bss->est_throughput);
1356 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR
1357 " level=%d snr=%d est_throughput=%u",
1358 MAC2STR(selected->bssid), selected->level,
1359 selected->snr, selected->est_throughput);
1360
1361 if (wpa_s->current_ssid->bssid_set &&
1362 os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1363 0) {
1364 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1365 "has preferred BSSID");
1366 return 1;
1367 }
1368
1369 if (selected->est_throughput > current_bss->est_throughput + 5000) {
1370 wpa_dbg(wpa_s, MSG_DEBUG,
1371 "Allow reassociation - selected BSS has better estimated throughput");
1372 return 1;
1373 }
1374
1375 if (current_bss->level < 0 && current_bss->level > selected->level) {
1376 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1377 "signal level");
1378 return 0;
1379 }
1380
1381 min_diff = 2;
1382 if (current_bss->level < 0) {
1383 if (current_bss->level < -85)
1384 min_diff = 1;
1385 else if (current_bss->level < -80)
1386 min_diff = 2;
1387 else if (current_bss->level < -75)
1388 min_diff = 3;
1389 else if (current_bss->level < -70)
1390 min_diff = 4;
1391 else
1392 min_diff = 5;
1393 }
1394 if (abs(current_bss->level - selected->level) < min_diff) {
1395 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1396 "in signal level");
1397 return 0;
1398 }
1399
1400 return 1;
1401 #else /* CONFIG_NO_ROAMING */
1402 return 0;
1403 #endif /* CONFIG_NO_ROAMING */
1404 }
1405
1406
1407 /* Return != 0 if no scan results could be fetched or if scan results should not
1408 * be shared with other virtual interfaces. */
1409 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1410 union wpa_event_data *data,
1411 int own_request)
1412 {
1413 struct wpa_scan_results *scan_res = NULL;
1414 int ret = 0;
1415 int ap = 0;
1416 #ifndef CONFIG_NO_RANDOM_POOL
1417 size_t i, num;
1418 #endif /* CONFIG_NO_RANDOM_POOL */
1419
1420 #ifdef CONFIG_AP
1421 if (wpa_s->ap_iface)
1422 ap = 1;
1423 #endif /* CONFIG_AP */
1424
1425 wpa_supplicant_notify_scanning(wpa_s, 0);
1426
1427 scan_res = wpa_supplicant_get_scan_results(wpa_s,
1428 data ? &data->scan_info :
1429 NULL, 1);
1430 if (scan_res == NULL) {
1431 if (wpa_s->conf->ap_scan == 2 || ap ||
1432 wpa_s->scan_res_handler == scan_only_handler)
1433 return -1;
1434 if (!own_request)
1435 return -1;
1436 if (data && data->scan_info.external_scan)
1437 return -1;
1438 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1439 "scanning again");
1440 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1441 ret = -1;
1442 goto scan_work_done;
1443 }
1444
1445 #ifndef CONFIG_NO_RANDOM_POOL
1446 num = scan_res->num;
1447 if (num > 10)
1448 num = 10;
1449 for (i = 0; i < num; i++) {
1450 u8 buf[5];
1451 struct wpa_scan_res *res = scan_res->res[i];
1452 buf[0] = res->bssid[5];
1453 buf[1] = res->qual & 0xff;
1454 buf[2] = res->noise & 0xff;
1455 buf[3] = res->level & 0xff;
1456 buf[4] = res->tsf & 0xff;
1457 random_add_randomness(buf, sizeof(buf));
1458 }
1459 #endif /* CONFIG_NO_RANDOM_POOL */
1460
1461 if (own_request && wpa_s->scan_res_handler &&
1462 !(data && data->scan_info.external_scan)) {
1463 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1464 struct wpa_scan_results *scan_res);
1465
1466 scan_res_handler = wpa_s->scan_res_handler;
1467 wpa_s->scan_res_handler = NULL;
1468 scan_res_handler(wpa_s, scan_res);
1469 ret = -2;
1470 goto scan_work_done;
1471 }
1472
1473 if (ap) {
1474 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1475 #ifdef CONFIG_AP
1476 if (wpa_s->ap_iface->scan_cb)
1477 wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1478 #endif /* CONFIG_AP */
1479 goto scan_work_done;
1480 }
1481
1482 wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
1483 wpa_s->own_scan_running,
1484 data ? data->scan_info.external_scan : 0);
1485 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1486 wpa_s->manual_scan_use_id && wpa_s->own_scan_running &&
1487 own_request && !(data && data->scan_info.external_scan)) {
1488 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
1489 wpa_s->manual_scan_id);
1490 wpa_s->manual_scan_use_id = 0;
1491 } else {
1492 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1493 }
1494 wpas_notify_scan_results(wpa_s);
1495
1496 wpas_notify_scan_done(wpa_s, 1);
1497
1498 if (data && data->scan_info.external_scan) {
1499 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
1500 wpa_scan_results_free(scan_res);
1501 return 0;
1502 }
1503
1504 if (wnm_scan_process(wpa_s, 1) > 0)
1505 goto scan_work_done;
1506
1507 if (sme_proc_obss_scan(wpa_s) > 0)
1508 goto scan_work_done;
1509
1510 if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
1511 goto scan_work_done;
1512
1513 if (autoscan_notify_scan(wpa_s, scan_res))
1514 goto scan_work_done;
1515
1516 if (wpa_s->disconnected) {
1517 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1518 goto scan_work_done;
1519 }
1520
1521 if (!wpas_driver_bss_selection(wpa_s) &&
1522 bgscan_notify_scan(wpa_s, scan_res) == 1)
1523 goto scan_work_done;
1524
1525 wpas_wps_update_ap_info(wpa_s, scan_res);
1526
1527 if (wpa_s->wpa_state >= WPA_AUTHENTICATING &&
1528 wpa_s->wpa_state < WPA_COMPLETED)
1529 goto scan_work_done;
1530
1531 wpa_scan_results_free(scan_res);
1532
1533 if (own_request && wpa_s->scan_work) {
1534 struct wpa_radio_work *work = wpa_s->scan_work;
1535 wpa_s->scan_work = NULL;
1536 radio_work_done(work);
1537 }
1538
1539 return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
1540
1541 scan_work_done:
1542 wpa_scan_results_free(scan_res);
1543 if (own_request && wpa_s->scan_work) {
1544 struct wpa_radio_work *work = wpa_s->scan_work;
1545 wpa_s->scan_work = NULL;
1546 radio_work_done(work);
1547 }
1548 return ret;
1549 }
1550
1551
1552 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
1553 int new_scan, int own_request)
1554 {
1555 struct wpa_bss *selected;
1556 struct wpa_ssid *ssid = NULL;
1557 int time_to_reenable = wpas_reenabled_network_time(wpa_s);
1558
1559 if (time_to_reenable > 0) {
1560 wpa_dbg(wpa_s, MSG_DEBUG,
1561 "Postpone network selection by %d seconds since all networks are disabled",
1562 time_to_reenable);
1563 eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
1564 eloop_register_timeout(time_to_reenable, 0,
1565 wpas_network_reenabled, wpa_s, NULL);
1566 return 0;
1567 }
1568
1569 if (wpa_s->p2p_mgmt)
1570 return 0; /* no normal connection on p2p_mgmt interface */
1571
1572 selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1573
1574 if (selected) {
1575 int skip;
1576 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1577 if (skip) {
1578 if (new_scan)
1579 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1580 return 0;
1581 }
1582
1583 if (ssid != wpa_s->current_ssid &&
1584 wpa_s->wpa_state >= WPA_AUTHENTICATING) {
1585 wpa_s->own_disconnect_req = 1;
1586 wpa_supplicant_deauthenticate(
1587 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1588 }
1589
1590 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1591 wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1592 return -1;
1593 }
1594 if (new_scan)
1595 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1596 /*
1597 * Do not notify other virtual radios of scan results since we do not
1598 * want them to start other associations at the same time.
1599 */
1600 return 1;
1601 } else {
1602 #ifdef CONFIG_MESH
1603 if (wpa_s->ifmsh) {
1604 wpa_msg(wpa_s, MSG_INFO,
1605 "Avoiding join because we already joined a mesh group");
1606 return 0;
1607 }
1608 #endif /* CONFIG_MESH */
1609 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1610 ssid = wpa_supplicant_pick_new_network(wpa_s);
1611 if (ssid) {
1612 wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1613 wpa_supplicant_associate(wpa_s, NULL, ssid);
1614 if (new_scan)
1615 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1616 } else if (own_request) {
1617 /*
1618 * No SSID found. If SCAN results are as a result of
1619 * own scan request and not due to a scan request on
1620 * another shared interface, try another scan.
1621 */
1622 int timeout_sec = wpa_s->scan_interval;
1623 int timeout_usec = 0;
1624 #ifdef CONFIG_P2P
1625 int res;
1626
1627 res = wpas_p2p_scan_no_go_seen(wpa_s);
1628 if (res == 2)
1629 return 2;
1630 if (res == 1)
1631 return 0;
1632
1633 if (wpa_s->p2p_in_provisioning ||
1634 wpa_s->show_group_started ||
1635 wpa_s->p2p_in_invitation) {
1636 /*
1637 * Use shorter wait during P2P Provisioning
1638 * state and during P2P join-a-group operation
1639 * to speed up group formation.
1640 */
1641 timeout_sec = 0;
1642 timeout_usec = 250000;
1643 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1644 timeout_usec);
1645 return 0;
1646 }
1647 #endif /* CONFIG_P2P */
1648 #ifdef CONFIG_INTERWORKING
1649 if (wpa_s->conf->auto_interworking &&
1650 wpa_s->conf->interworking &&
1651 wpa_s->conf->cred) {
1652 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1653 "start ANQP fetch since no matching "
1654 "networks found");
1655 wpa_s->network_select = 1;
1656 wpa_s->auto_network_select = 1;
1657 interworking_start_fetch_anqp(wpa_s);
1658 return 1;
1659 }
1660 #endif /* CONFIG_INTERWORKING */
1661 #ifdef CONFIG_WPS
1662 if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
1663 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
1664 timeout_sec = 0;
1665 timeout_usec = 500000;
1666 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1667 timeout_usec);
1668 return 0;
1669 }
1670 #endif /* CONFIG_WPS */
1671 if (wpa_supplicant_req_sched_scan(wpa_s))
1672 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1673 timeout_usec);
1674
1675 wpa_msg_ctrl(wpa_s, MSG_INFO,
1676 WPA_EVENT_NETWORK_NOT_FOUND);
1677 }
1678 }
1679 return 0;
1680 }
1681
1682
1683 static int wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1684 union wpa_event_data *data)
1685 {
1686 struct wpa_supplicant *ifs;
1687 int res;
1688
1689 res = _wpa_supplicant_event_scan_results(wpa_s, data, 1);
1690 if (res == 2) {
1691 /*
1692 * Interface may have been removed, so must not dereference
1693 * wpa_s after this.
1694 */
1695 return 1;
1696 }
1697 if (res != 0) {
1698 /*
1699 * If no scan results could be fetched, then no need to
1700 * notify those interfaces that did not actually request
1701 * this scan. Similarly, if scan results started a new operation on this
1702 * interface, do not notify other interfaces to avoid concurrent
1703 * operations during a connection attempt.
1704 */
1705 return 0;
1706 }
1707
1708 /*
1709 * Check other interfaces to see if they share the same radio. If
1710 * so, they get updated with this same scan info.
1711 */
1712 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1713 radio_list) {
1714 if (ifs != wpa_s) {
1715 wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1716 "sibling", ifs->ifname);
1717 _wpa_supplicant_event_scan_results(ifs, data, 0);
1718 }
1719 }
1720
1721 return 0;
1722 }
1723
1724 #endif /* CONFIG_NO_SCAN_PROCESSING */
1725
1726
1727 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1728 {
1729 #ifdef CONFIG_NO_SCAN_PROCESSING
1730 return -1;
1731 #else /* CONFIG_NO_SCAN_PROCESSING */
1732 struct os_reltime now;
1733
1734 if (wpa_s->last_scan_res_used == 0)
1735 return -1;
1736
1737 os_get_reltime(&now);
1738 if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
1739 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1740 return -1;
1741 }
1742
1743 return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1744 #endif /* CONFIG_NO_SCAN_PROCESSING */
1745 }
1746
1747 #ifdef CONFIG_WNM
1748
1749 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1750 {
1751 struct wpa_supplicant *wpa_s = eloop_ctx;
1752
1753 if (wpa_s->wpa_state < WPA_ASSOCIATED)
1754 return;
1755
1756 if (!wpa_s->no_keep_alive) {
1757 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1758 MAC2STR(wpa_s->bssid));
1759 /* TODO: could skip this if normal data traffic has been sent */
1760 /* TODO: Consider using some more appropriate data frame for
1761 * this */
1762 if (wpa_s->l2)
1763 l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1764 (u8 *) "", 0);
1765 }
1766
1767 #ifdef CONFIG_SME
1768 if (wpa_s->sme.bss_max_idle_period) {
1769 unsigned int msec;
1770 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1771 if (msec > 100)
1772 msec -= 100;
1773 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1774 wnm_bss_keep_alive, wpa_s, NULL);
1775 }
1776 #endif /* CONFIG_SME */
1777 }
1778
1779
1780 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1781 const u8 *ies, size_t ies_len)
1782 {
1783 struct ieee802_11_elems elems;
1784
1785 if (ies == NULL)
1786 return;
1787
1788 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1789 return;
1790
1791 #ifdef CONFIG_SME
1792 if (elems.bss_max_idle_period) {
1793 unsigned int msec;
1794 wpa_s->sme.bss_max_idle_period =
1795 WPA_GET_LE16(elems.bss_max_idle_period);
1796 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1797 "TU)%s", wpa_s->sme.bss_max_idle_period,
1798 (elems.bss_max_idle_period[2] & 0x01) ?
1799 " (protected keep-live required)" : "");
1800 if (wpa_s->sme.bss_max_idle_period == 0)
1801 wpa_s->sme.bss_max_idle_period = 1;
1802 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1803 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1804 /* msec times 1000 */
1805 msec = wpa_s->sme.bss_max_idle_period * 1024;
1806 if (msec > 100)
1807 msec -= 100;
1808 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1809 wnm_bss_keep_alive, wpa_s,
1810 NULL);
1811 }
1812 }
1813 #endif /* CONFIG_SME */
1814 }
1815
1816 #endif /* CONFIG_WNM */
1817
1818
1819 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1820 {
1821 #ifdef CONFIG_WNM
1822 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1823 #endif /* CONFIG_WNM */
1824 }
1825
1826
1827 #ifdef CONFIG_INTERWORKING
1828
1829 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1830 size_t len)
1831 {
1832 int res;
1833
1834 wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1835 res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1836 if (res) {
1837 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1838 }
1839
1840 return res;
1841 }
1842
1843
1844 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1845 const u8 *ies, size_t ies_len)
1846 {
1847 struct ieee802_11_elems elems;
1848
1849 if (ies == NULL)
1850 return;
1851
1852 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1853 return;
1854
1855 if (elems.qos_map_set) {
1856 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1857 elems.qos_map_set_len);
1858 }
1859 }
1860
1861 #endif /* CONFIG_INTERWORKING */
1862
1863
1864 #ifdef CONFIG_FST
1865 static int wpas_fst_update_mbie(struct wpa_supplicant *wpa_s,
1866 const u8 *ie, size_t ie_len)
1867 {
1868 struct mb_ies_info mb_ies;
1869
1870 if (!ie || !ie_len || !wpa_s->fst)
1871 return -ENOENT;
1872
1873 os_memset(&mb_ies, 0, sizeof(mb_ies));
1874
1875 while (ie_len >= 2 && mb_ies.nof_ies < MAX_NOF_MB_IES_SUPPORTED) {
1876 size_t len;
1877
1878 len = 2 + ie[1];
1879 if (len > ie_len) {
1880 wpa_hexdump(MSG_DEBUG, "FST: Truncated IE found",
1881 ie, ie_len);
1882 break;
1883 }
1884
1885 if (ie[0] == WLAN_EID_MULTI_BAND) {
1886 wpa_printf(MSG_DEBUG, "MB IE of %u bytes found",
1887 (unsigned int) len);
1888 mb_ies.ies[mb_ies.nof_ies].ie = ie + 2;
1889 mb_ies.ies[mb_ies.nof_ies].ie_len = len - 2;
1890 mb_ies.nof_ies++;
1891 }
1892
1893 ie_len -= len;
1894 ie += len;
1895 }
1896
1897 if (mb_ies.nof_ies > 0) {
1898 wpabuf_free(wpa_s->received_mb_ies);
1899 wpa_s->received_mb_ies = mb_ies_by_info(&mb_ies);
1900 return 0;
1901 }
1902
1903 return -ENOENT;
1904 }
1905 #endif /* CONFIG_FST */
1906
1907
1908 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1909 union wpa_event_data *data)
1910 {
1911 int l, len, found = 0, wpa_found, rsn_found;
1912 const u8 *p;
1913 #ifdef CONFIG_IEEE80211R
1914 u8 bssid[ETH_ALEN];
1915 #endif /* CONFIG_IEEE80211R */
1916
1917 wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1918 if (data->assoc_info.req_ies)
1919 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1920 data->assoc_info.req_ies_len);
1921 if (data->assoc_info.resp_ies) {
1922 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1923 data->assoc_info.resp_ies_len);
1924 #ifdef CONFIG_TDLS
1925 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1926 data->assoc_info.resp_ies_len);
1927 #endif /* CONFIG_TDLS */
1928 #ifdef CONFIG_WNM
1929 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1930 data->assoc_info.resp_ies_len);
1931 #endif /* CONFIG_WNM */
1932 #ifdef CONFIG_INTERWORKING
1933 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1934 data->assoc_info.resp_ies_len);
1935 #endif /* CONFIG_INTERWORKING */
1936 }
1937 if (data->assoc_info.beacon_ies)
1938 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1939 data->assoc_info.beacon_ies,
1940 data->assoc_info.beacon_ies_len);
1941 if (data->assoc_info.freq)
1942 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1943 data->assoc_info.freq);
1944
1945 p = data->assoc_info.req_ies;
1946 l = data->assoc_info.req_ies_len;
1947
1948 /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1949 while (p && l >= 2) {
1950 len = p[1] + 2;
1951 if (len > l) {
1952 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1953 p, l);
1954 break;
1955 }
1956 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1957 (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1958 (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1959 if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1960 break;
1961 found = 1;
1962 wpa_find_assoc_pmkid(wpa_s);
1963 break;
1964 }
1965 l -= len;
1966 p += len;
1967 }
1968 if (!found && data->assoc_info.req_ies)
1969 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1970
1971 #ifdef CONFIG_IEEE80211R
1972 #ifdef CONFIG_SME
1973 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1974 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1975 wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1976 data->assoc_info.resp_ies,
1977 data->assoc_info.resp_ies_len,
1978 bssid) < 0) {
1979 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1980 "Reassociation Response failed");
1981 wpa_supplicant_deauthenticate(
1982 wpa_s, WLAN_REASON_INVALID_IE);
1983 return -1;
1984 }
1985 }
1986
1987 p = data->assoc_info.resp_ies;
1988 l = data->assoc_info.resp_ies_len;
1989
1990 #ifdef CONFIG_WPS_STRICT
1991 if (p && wpa_s->current_ssid &&
1992 wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1993 struct wpabuf *wps;
1994 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1995 if (wps == NULL) {
1996 wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1997 "include WPS IE in (Re)Association Response");
1998 return -1;
1999 }
2000
2001 if (wps_validate_assoc_resp(wps) < 0) {
2002 wpabuf_free(wps);
2003 wpa_supplicant_deauthenticate(
2004 wpa_s, WLAN_REASON_INVALID_IE);
2005 return -1;
2006 }
2007 wpabuf_free(wps);
2008 }
2009 #endif /* CONFIG_WPS_STRICT */
2010
2011 /* Go through the IEs and make a copy of the MDIE, if present. */
2012 while (p && l >= 2) {
2013 len = p[1] + 2;
2014 if (len > l) {
2015 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
2016 p, l);
2017 break;
2018 }
2019 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
2020 p[1] >= MOBILITY_DOMAIN_ID_LEN) {
2021 wpa_s->sme.ft_used = 1;
2022 os_memcpy(wpa_s->sme.mobility_domain, p + 2,
2023 MOBILITY_DOMAIN_ID_LEN);
2024 break;
2025 }
2026 l -= len;
2027 p += len;
2028 }
2029 #endif /* CONFIG_SME */
2030
2031 /* Process FT when SME is in the driver */
2032 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
2033 wpa_ft_is_completed(wpa_s->wpa)) {
2034 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
2035 wpa_ft_validate_reassoc_resp(wpa_s->wpa,
2036 data->assoc_info.resp_ies,
2037 data->assoc_info.resp_ies_len,
2038 bssid) < 0) {
2039 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
2040 "Reassociation Response failed");
2041 wpa_supplicant_deauthenticate(
2042 wpa_s, WLAN_REASON_INVALID_IE);
2043 return -1;
2044 }
2045 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
2046 }
2047
2048 wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
2049 data->assoc_info.resp_ies_len);
2050 #endif /* CONFIG_IEEE80211R */
2051
2052 /* WPA/RSN IE from Beacon/ProbeResp */
2053 p = data->assoc_info.beacon_ies;
2054 l = data->assoc_info.beacon_ies_len;
2055
2056 /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
2057 */
2058 wpa_found = rsn_found = 0;
2059 while (p && l >= 2) {
2060 len = p[1] + 2;
2061 if (len > l) {
2062 wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
2063 p, l);
2064 break;
2065 }
2066 if (!wpa_found &&
2067 p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
2068 os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
2069 wpa_found = 1;
2070 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
2071 }
2072
2073 if (!rsn_found &&
2074 p[0] == WLAN_EID_RSN && p[1] >= 2) {
2075 rsn_found = 1;
2076 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
2077 }
2078
2079 l -= len;
2080 p += len;
2081 }
2082
2083 if (!wpa_found && data->assoc_info.beacon_ies)
2084 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
2085 if (!rsn_found && data->assoc_info.beacon_ies)
2086 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
2087 if (wpa_found || rsn_found)
2088 wpa_s->ap_ies_from_associnfo = 1;
2089
2090 if (wpa_s->assoc_freq && data->assoc_info.freq &&
2091 wpa_s->assoc_freq != data->assoc_info.freq) {
2092 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
2093 "%u to %u MHz",
2094 wpa_s->assoc_freq, data->assoc_info.freq);
2095 wpa_supplicant_update_scan_results(wpa_s);
2096 }
2097
2098 wpa_s->assoc_freq = data->assoc_info.freq;
2099
2100 return 0;
2101 }
2102
2103
2104 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
2105 {
2106 const u8 *bss_wpa = NULL, *bss_rsn = NULL;
2107
2108 if (!wpa_s->current_bss || !wpa_s->current_ssid)
2109 return -1;
2110
2111 if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
2112 return 0;
2113
2114 bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
2115 WPA_IE_VENDOR_TYPE);
2116 bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
2117
2118 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
2119 bss_wpa ? 2 + bss_wpa[1] : 0) ||
2120 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
2121 bss_rsn ? 2 + bss_rsn[1] : 0))
2122 return -1;
2123
2124 return 0;
2125 }
2126
2127
2128 static void wpas_fst_update_mb_assoc(struct wpa_supplicant *wpa_s,
2129 union wpa_event_data *data)
2130 {
2131 #ifdef CONFIG_FST
2132 struct assoc_info *ai = data ? &data->assoc_info : NULL;
2133 struct wpa_bss *bss = wpa_s->current_bss;
2134 const u8 *ieprb, *iebcn;
2135
2136 wpabuf_free(wpa_s->received_mb_ies);
2137 wpa_s->received_mb_ies = NULL;
2138
2139 if (ai &&
2140 !wpas_fst_update_mbie(wpa_s, ai->resp_ies, ai->resp_ies_len)) {
2141 wpa_printf(MSG_DEBUG,
2142 "FST: MB IEs updated from Association Response frame");
2143 return;
2144 }
2145
2146 if (ai &&
2147 !wpas_fst_update_mbie(wpa_s, ai->beacon_ies, ai->beacon_ies_len)) {
2148 wpa_printf(MSG_DEBUG,
2149 "FST: MB IEs updated from association event Beacon IEs");
2150 return;
2151 }
2152
2153 if (!bss)
2154 return;
2155
2156 ieprb = (const u8 *) (bss + 1);
2157 iebcn = ieprb + bss->ie_len;
2158
2159 if (!wpas_fst_update_mbie(wpa_s, ieprb, bss->ie_len))
2160 wpa_printf(MSG_DEBUG, "FST: MB IEs updated from bss IE");
2161 else if (!wpas_fst_update_mbie(wpa_s, iebcn, bss->beacon_ie_len))
2162 wpa_printf(MSG_DEBUG, "FST: MB IEs updated from bss beacon IE");
2163 #endif /* CONFIG_FST */
2164 }
2165
2166
2167 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
2168 union wpa_event_data *data)
2169 {
2170 u8 bssid[ETH_ALEN];
2171 int ft_completed;
2172 int new_bss = 0;
2173
2174 #ifdef CONFIG_AP
2175 if (wpa_s->ap_iface) {
2176 if (!data)
2177 return;
2178 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
2179 data->assoc_info.addr,
2180 data->assoc_info.req_ies,
2181 data->assoc_info.req_ies_len,
2182 data->assoc_info.reassoc);
2183 return;
2184 }
2185 #endif /* CONFIG_AP */
2186
2187 eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
2188
2189 ft_completed = wpa_ft_is_completed(wpa_s->wpa);
2190 if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
2191 return;
2192
2193 if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
2194 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
2195 wpa_supplicant_deauthenticate(
2196 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2197 return;
2198 }
2199
2200 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
2201 if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
2202 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
2203 MACSTR, MAC2STR(bssid));
2204 new_bss = 1;
2205 random_add_randomness(bssid, ETH_ALEN);
2206 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
2207 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
2208 wpas_notify_bssid_changed(wpa_s);
2209
2210 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
2211 wpa_clear_keys(wpa_s, bssid);
2212 }
2213 if (wpa_supplicant_select_config(wpa_s) < 0) {
2214 wpa_supplicant_deauthenticate(
2215 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2216 return;
2217 }
2218 }
2219
2220 if (wpa_s->conf->ap_scan == 1 &&
2221 wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
2222 if (wpa_supplicant_assoc_update_ie(wpa_s) < 0 && new_bss)
2223 wpa_msg(wpa_s, MSG_WARNING,
2224 "WPA/RSN IEs not updated");
2225 }
2226
2227 wpas_fst_update_mb_assoc(wpa_s, data);
2228
2229 #ifdef CONFIG_SME
2230 os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
2231 wpa_s->sme.prev_bssid_set = 1;
2232 wpa_s->sme.last_unprot_disconnect.sec = 0;
2233 #endif /* CONFIG_SME */
2234
2235 wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
2236 if (wpa_s->current_ssid) {
2237 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
2238 * initialized before association, but for other modes,
2239 * initialize PC/SC here, if the current configuration needs
2240 * smartcard or SIM/USIM. */
2241 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
2242 }
2243 wpa_sm_notify_assoc(wpa_s->wpa, bssid);
2244 if (wpa_s->l2)
2245 l2_packet_notify_auth_start(wpa_s->l2);
2246
2247 /*
2248 * Set portEnabled first to FALSE in order to get EAP state machine out
2249 * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
2250 * state machine may transit to AUTHENTICATING state based on obsolete
2251 * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
2252 * AUTHENTICATED without ever giving chance to EAP state machine to
2253 * reset the state.
2254 */
2255 if (!ft_completed) {
2256 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
2257 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
2258 }
2259 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
2260 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
2261 /* 802.1X::portControl = Auto */
2262 eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
2263 wpa_s->eapol_received = 0;
2264 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2265 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
2266 (wpa_s->current_ssid &&
2267 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
2268 if (wpa_s->current_ssid &&
2269 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
2270 (wpa_s->drv_flags &
2271 WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2272 /*
2273 * Set the key after having received joined-IBSS event
2274 * from the driver.
2275 */
2276 wpa_supplicant_set_wpa_none_key(wpa_s,
2277 wpa_s->current_ssid);
2278 }
2279 wpa_supplicant_cancel_auth_timeout(wpa_s);
2280 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2281 } else if (!ft_completed) {
2282 /* Timeout for receiving the first EAPOL packet */
2283 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
2284 }
2285 wpa_supplicant_cancel_scan(wpa_s);
2286
2287 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2288 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
2289 /*
2290 * We are done; the driver will take care of RSN 4-way
2291 * handshake.
2292 */
2293 wpa_supplicant_cancel_auth_timeout(wpa_s);
2294 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2295 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2296 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2297 } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2298 wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
2299 /*
2300 * The driver will take care of RSN 4-way handshake, so we need
2301 * to allow EAPOL supplicant to complete its work without
2302 * waiting for WPA supplicant.
2303 */
2304 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2305 } else if (ft_completed) {
2306 /*
2307 * FT protocol completed - make sure EAPOL state machine ends
2308 * up in authenticated.
2309 */
2310 wpa_supplicant_cancel_auth_timeout(wpa_s);
2311 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2312 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2313 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2314 }
2315
2316 wpa_s->last_eapol_matches_bssid = 0;
2317
2318 if (wpa_s->pending_eapol_rx) {
2319 struct os_reltime now, age;
2320 os_get_reltime(&now);
2321 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
2322 if (age.sec == 0 && age.usec < 100000 &&
2323 os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
2324 0) {
2325 wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
2326 "frame that was received just before "
2327 "association notification");
2328 wpa_supplicant_rx_eapol(
2329 wpa_s, wpa_s->pending_eapol_rx_src,
2330 wpabuf_head(wpa_s->pending_eapol_rx),
2331 wpabuf_len(wpa_s->pending_eapol_rx));
2332 }
2333 wpabuf_free(wpa_s->pending_eapol_rx);
2334 wpa_s->pending_eapol_rx = NULL;
2335 }
2336
2337 if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2338 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
2339 wpa_s->current_ssid &&
2340 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2341 /* Set static WEP keys again */
2342 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
2343 }
2344
2345 #ifdef CONFIG_IBSS_RSN
2346 if (wpa_s->current_ssid &&
2347 wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
2348 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
2349 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
2350 wpa_s->ibss_rsn == NULL) {
2351 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2352 if (!wpa_s->ibss_rsn) {
2353 wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
2354 wpa_supplicant_deauthenticate(
2355 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2356 return;
2357 }
2358
2359 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2360 }
2361 #endif /* CONFIG_IBSS_RSN */
2362
2363 wpas_wps_notify_assoc(wpa_s, bssid);
2364
2365 if (data) {
2366 wmm_ac_notify_assoc(wpa_s, data->assoc_info.resp_ies,
2367 data->assoc_info.resp_ies_len,
2368 &data->assoc_info.wmm_params);
2369
2370 if (wpa_s->reassoc_same_bss)
2371 wmm_ac_restore_tspecs(wpa_s);
2372 }
2373 }
2374
2375
2376 static int disconnect_reason_recoverable(u16 reason_code)
2377 {
2378 return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2379 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2380 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2381 }
2382
2383
2384 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2385 u16 reason_code,
2386 int locally_generated)
2387 {
2388 const u8 *bssid;
2389
2390 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2391 /*
2392 * At least Host AP driver and a Prism3 card seemed to be
2393 * generating streams of disconnected events when configuring
2394 * IBSS for WPA-None. Ignore them for now.
2395 */
2396 return;
2397 }
2398
2399 bssid = wpa_s->bssid;
2400 if (is_zero_ether_addr(bssid))
2401 bssid = wpa_s->pending_bssid;
2402
2403 if (!is_zero_ether_addr(bssid) ||
2404 wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2405 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2406 " reason=%d%s",
2407 MAC2STR(bssid), reason_code,
2408 locally_generated ? " locally_generated=1" : "");
2409 }
2410 }
2411
2412
2413 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2414 int locally_generated)
2415 {
2416 if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2417 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2418 return 0; /* Not in 4-way handshake with PSK */
2419
2420 /*
2421 * It looks like connection was lost while trying to go through PSK
2422 * 4-way handshake. Filter out known disconnection cases that are caused
2423 * by something else than PSK mismatch to avoid confusing reports.
2424 */
2425
2426 if (locally_generated) {
2427 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2428 return 0;
2429 }
2430
2431 return 1;
2432 }
2433
2434
2435 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2436 u16 reason_code,
2437 int locally_generated)
2438 {
2439 const u8 *bssid;
2440 int authenticating;
2441 u8 prev_pending_bssid[ETH_ALEN];
2442 struct wpa_bss *fast_reconnect = NULL;
2443 struct wpa_ssid *fast_reconnect_ssid = NULL;
2444 struct wpa_ssid *last_ssid;
2445
2446 authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2447 os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2448
2449 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2450 /*
2451 * At least Host AP driver and a Prism3 card seemed to be
2452 * generating streams of disconnected events when configuring
2453 * IBSS for WPA-None. Ignore them for now.
2454 */
2455 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2456 "IBSS/WPA-None mode");
2457 return;
2458 }
2459
2460 if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2461 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2462 "pre-shared key may be incorrect");
2463 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2464 return; /* P2P group removed */
2465 wpas_auth_failed(wpa_s, "WRONG_KEY");
2466 }
2467 if (!wpa_s->disconnected &&
2468 (!wpa_s->auto_reconnect_disabled ||
2469 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS ||
2470 wpas_wps_searching(wpa_s) ||
2471 wpas_wps_reenable_networks_pending(wpa_s))) {
2472 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2473 "reconnect (wps=%d/%d wpa_state=%d)",
2474 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2475 wpas_wps_searching(wpa_s),
2476 wpa_s->wpa_state);
2477 if (wpa_s->wpa_state == WPA_COMPLETED &&
2478 wpa_s->current_ssid &&
2479 wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2480 !locally_generated &&
2481 disconnect_reason_recoverable(reason_code)) {
2482 /*
2483 * It looks like the AP has dropped association with
2484 * us, but could allow us to get back in. Try to
2485 * reconnect to the same BSS without full scan to save
2486 * time for some common cases.
2487 */
2488 fast_reconnect = wpa_s->current_bss;
2489 fast_reconnect_ssid = wpa_s->current_ssid;
2490 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2491 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2492 else
2493 wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2494 "immediate scan");
2495 } else {
2496 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2497 "try to re-connect");
2498 wpa_s->reassociate = 0;
2499 wpa_s->disconnected = 1;
2500 if (!wpa_s->pno)
2501 wpa_supplicant_cancel_sched_scan(wpa_s);
2502 }
2503 bssid = wpa_s->bssid;
2504 if (is_zero_ether_addr(bssid))
2505 bssid = wpa_s->pending_bssid;
2506 if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2507 wpas_connection_failed(wpa_s, bssid);
2508 wpa_sm_notify_disassoc(wpa_s->wpa);
2509 if (locally_generated)
2510 wpa_s->disconnect_reason = -reason_code;
2511 else
2512 wpa_s->disconnect_reason = reason_code;
2513 wpas_notify_disconnect_reason(wpa_s);
2514 if (wpa_supplicant_dynamic_keys(wpa_s)) {
2515 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2516 wpa_clear_keys(wpa_s, wpa_s->bssid);
2517 }
2518 last_ssid = wpa_s->current_ssid;
2519 wpa_supplicant_mark_disassoc(wpa_s);
2520
2521 if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2522 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2523 wpa_s->current_ssid = last_ssid;
2524 }
2525
2526 if (fast_reconnect &&
2527 !wpas_network_disabled(wpa_s, fast_reconnect_ssid) &&
2528 !disallowed_bssid(wpa_s, fast_reconnect->bssid) &&
2529 !disallowed_ssid(wpa_s, fast_reconnect->ssid,
2530 fast_reconnect->ssid_len) &&
2531 !wpas_temp_disabled(wpa_s, fast_reconnect_ssid)) {
2532 #ifndef CONFIG_NO_SCAN_PROCESSING
2533 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2534 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2535 fast_reconnect_ssid) < 0) {
2536 /* Recover through full scan */
2537 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2538 }
2539 #endif /* CONFIG_NO_SCAN_PROCESSING */
2540 } else if (fast_reconnect) {
2541 /*
2542 * Could not reconnect to the same BSS due to network being
2543 * disabled. Use a new scan to match the alternative behavior
2544 * above, i.e., to continue automatic reconnection attempt in a
2545 * way that enforces disabled network rules.
2546 */
2547 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2548 }
2549 }
2550
2551
2552 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2553 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2554 {
2555 struct wpa_supplicant *wpa_s = eloop_ctx;
2556
2557 if (!wpa_s->pending_mic_error_report)
2558 return;
2559
2560 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2561 wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2562 wpa_s->pending_mic_error_report = 0;
2563 }
2564 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2565
2566
2567 static void
2568 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2569 union wpa_event_data *data)
2570 {
2571 int pairwise;
2572 struct os_reltime t;
2573
2574 wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2575 pairwise = (data && data->michael_mic_failure.unicast);
2576 os_get_reltime(&t);
2577 if ((wpa_s->last_michael_mic_error.sec &&
2578 !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2579 wpa_s->pending_mic_error_report) {
2580 if (wpa_s->pending_mic_error_report) {
2581 /*
2582 * Send the pending MIC error report immediately since
2583 * we are going to start countermeasures and AP better
2584 * do the same.
2585 */
2586 wpa_sm_key_request(wpa_s->wpa, 1,
2587 wpa_s->pending_mic_error_pairwise);
2588 }
2589
2590 /* Send the new MIC error report immediately since we are going
2591 * to start countermeasures and AP better do the same.
2592 */
2593 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2594
2595 /* initialize countermeasures */
2596 wpa_s->countermeasures = 1;
2597
2598 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2599
2600 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2601
2602 /*
2603 * Need to wait for completion of request frame. We do not get
2604 * any callback for the message completion, so just wait a
2605 * short while and hope for the best. */
2606 os_sleep(0, 10000);
2607
2608 wpa_drv_set_countermeasures(wpa_s, 1);
2609 wpa_supplicant_deauthenticate(wpa_s,
2610 WLAN_REASON_MICHAEL_MIC_FAILURE);
2611 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2612 wpa_s, NULL);
2613 eloop_register_timeout(60, 0,
2614 wpa_supplicant_stop_countermeasures,
2615 wpa_s, NULL);
2616 /* TODO: mark the AP rejected for 60 second. STA is
2617 * allowed to associate with another AP.. */
2618 } else {
2619 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2620 if (wpa_s->mic_errors_seen) {
2621 /*
2622 * Reduce the effectiveness of Michael MIC error
2623 * reports as a means for attacking against TKIP if
2624 * more than one MIC failure is noticed with the same
2625 * PTK. We delay the transmission of the reports by a
2626 * random time between 0 and 60 seconds in order to
2627 * force the attacker wait 60 seconds before getting
2628 * the information on whether a frame resulted in a MIC
2629 * failure.
2630 */
2631 u8 rval[4];
2632 int sec;
2633
2634 if (os_get_random(rval, sizeof(rval)) < 0)
2635 sec = os_random() % 60;
2636 else
2637 sec = WPA_GET_BE32(rval) % 60;
2638 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2639 "report %d seconds", sec);
2640 wpa_s->pending_mic_error_report = 1;
2641 wpa_s->pending_mic_error_pairwise = pairwise;
2642 eloop_cancel_timeout(
2643 wpa_supplicant_delayed_mic_error_report,
2644 wpa_s, NULL);
2645 eloop_register_timeout(
2646 sec, os_random() % 1000000,
2647 wpa_supplicant_delayed_mic_error_report,
2648 wpa_s, NULL);
2649 } else {
2650 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2651 }
2652 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2653 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2654 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2655 }
2656 wpa_s->last_michael_mic_error = t;
2657 wpa_s->mic_errors_seen++;
2658 }
2659
2660
2661 #ifdef CONFIG_TERMINATE_ONLASTIF
2662 static int any_interfaces(struct wpa_supplicant *head)
2663 {
2664 struct wpa_supplicant *wpa_s;
2665
2666 for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2667 if (!wpa_s->interface_removed)
2668 return 1;
2669 return 0;
2670 }
2671 #endif /* CONFIG_TERMINATE_ONLASTIF */
2672
2673
2674 static void
2675 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2676 union wpa_event_data *data)
2677 {
2678 if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2679 return;
2680
2681 switch (data->interface_status.ievent) {
2682 case EVENT_INTERFACE_ADDED:
2683 if (!wpa_s->interface_removed)
2684 break;
2685 wpa_s->interface_removed = 0;
2686 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2687 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2688 wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2689 "driver after interface was added");
2690 }
2691
2692 #ifdef CONFIG_P2P
2693 if (!wpa_s->global->p2p &&
2694 !wpa_s->global->p2p_disabled &&
2695 !wpa_s->conf->p2p_disabled &&
2696 (wpa_s->drv_flags &
2697 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
2698 wpas_p2p_add_p2pdev_interface(
2699 wpa_s, wpa_s->global->params.conf_p2p_dev) < 0) {
2700 wpa_printf(MSG_INFO,
2701 "P2P: Failed to enable P2P Device interface");
2702 /* Try to continue without. P2P will be disabled. */
2703 }
2704 #endif /* CONFIG_P2P */
2705
2706 break;
2707 case EVENT_INTERFACE_REMOVED:
2708 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2709 wpa_s->interface_removed = 1;
2710 wpa_supplicant_mark_disassoc(wpa_s);
2711 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2712 l2_packet_deinit(wpa_s->l2);
2713 wpa_s->l2 = NULL;
2714
2715 #ifdef CONFIG_P2P
2716 if (wpa_s->global->p2p &&
2717 wpa_s->global->p2p_init_wpa_s->parent == wpa_s &&
2718 (wpa_s->drv_flags &
2719 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) {
2720 wpa_dbg(wpa_s, MSG_DEBUG,
2721 "Removing P2P Device interface");
2722 wpa_supplicant_remove_iface(
2723 wpa_s->global, wpa_s->global->p2p_init_wpa_s,
2724 0);
2725 wpa_s->global->p2p_init_wpa_s = NULL;
2726 }
2727 #endif /* CONFIG_P2P */
2728
2729 #ifdef CONFIG_TERMINATE_ONLASTIF
2730 /* check if last interface */
2731 if (!any_interfaces(wpa_s->global->ifaces))
2732 eloop_terminate();
2733 #endif /* CONFIG_TERMINATE_ONLASTIF */
2734 break;
2735 }
2736 }
2737
2738
2739 #ifdef CONFIG_PEERKEY
2740 static void
2741 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2742 union wpa_event_data *data)
2743 {
2744 if (data == NULL)
2745 return;
2746 wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2747 }
2748 #endif /* CONFIG_PEERKEY */
2749
2750
2751 #ifdef CONFIG_TDLS
2752 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2753 union wpa_event_data *data)
2754 {
2755 if (data == NULL)
2756 return;
2757 switch (data->tdls.oper) {
2758 case TDLS_REQUEST_SETUP:
2759 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2760 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2761 wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2762 else
2763 wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2764 break;
2765 case TDLS_REQUEST_TEARDOWN:
2766 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2767 wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2768 data->tdls.reason_code);
2769 else
2770 wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2771 data->tdls.peer);
2772 break;
2773 case TDLS_REQUEST_DISCOVER:
2774 wpa_tdls_send_discovery_request(wpa_s->wpa,
2775 data->tdls.peer);
2776 break;
2777 }
2778 }
2779 #endif /* CONFIG_TDLS */
2780
2781
2782 #ifdef CONFIG_WNM
2783 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2784 union wpa_event_data *data)
2785 {
2786 if (data == NULL)
2787 return;
2788 switch (data->wnm.oper) {
2789 case WNM_OPER_SLEEP:
2790 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2791 "(action=%d, intval=%d)",
2792 data->wnm.sleep_action, data->wnm.sleep_intval);
2793 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2794 data->wnm.sleep_intval, NULL);
2795 break;
2796 }
2797 }
2798 #endif /* CONFIG_WNM */
2799
2800
2801 #ifdef CONFIG_IEEE80211R
2802 static void
2803 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2804 union wpa_event_data *data)
2805 {
2806 if (data == NULL)
2807 return;
2808
2809 if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2810 data->ft_ies.ies_len,
2811 data->ft_ies.ft_action,
2812 data->ft_ies.target_ap,
2813 data->ft_ies.ric_ies,
2814 data->ft_ies.ric_ies_len) < 0) {
2815 /* TODO: prevent MLME/driver from trying to associate? */
2816 }
2817 }
2818 #endif /* CONFIG_IEEE80211R */
2819
2820
2821 #ifdef CONFIG_IBSS_RSN
2822 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2823 union wpa_event_data *data)
2824 {
2825 struct wpa_ssid *ssid;
2826 if (wpa_s->wpa_state < WPA_ASSOCIATED)
2827 return;
2828 if (data == NULL)
2829 return;
2830 ssid = wpa_s->current_ssid;
2831 if (ssid == NULL)
2832 return;
2833 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2834 return;
2835
2836 ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2837 }
2838
2839
2840 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2841 union wpa_event_data *data)
2842 {
2843 struct wpa_ssid *ssid = wpa_s->current_ssid;
2844
2845 if (ssid == NULL)
2846 return;
2847
2848 /* check if the ssid is correctly configured as IBSS/RSN */
2849 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2850 return;
2851
2852 ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2853 data->rx_mgmt.frame_len);
2854 }
2855 #endif /* CONFIG_IBSS_RSN */
2856
2857
2858 #ifdef CONFIG_IEEE80211R
2859 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2860 size_t len)
2861 {
2862 const u8 *sta_addr, *target_ap_addr;
2863 u16 status;
2864
2865 wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2866 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2867 return; /* only SME case supported for now */
2868 if (len < 1 + 2 * ETH_ALEN + 2)
2869 return;
2870 if (data[0] != 2)
2871 return; /* Only FT Action Response is supported for now */
2872 sta_addr = data + 1;
2873 target_ap_addr = data + 1 + ETH_ALEN;
2874 status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2875 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2876 MACSTR " TargetAP " MACSTR " status %u",
2877 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2878
2879 if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2880 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2881 " in FT Action Response", MAC2STR(sta_addr));
2882 return;
2883 }
2884
2885 if (status) {
2886 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2887 "failure (status code %d)", status);
2888 /* TODO: report error to FT code(?) */
2889 return;
2890 }
2891
2892 if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2893 len - (1 + 2 * ETH_ALEN + 2), 1,
2894 target_ap_addr, NULL, 0) < 0)
2895 return;
2896
2897 #ifdef CONFIG_SME
2898 {
2899 struct wpa_bss *bss;
2900 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2901 if (bss)
2902 wpa_s->sme.freq = bss->freq;
2903 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2904 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2905 WLAN_AUTH_FT);
2906 }
2907 #endif /* CONFIG_SME */
2908 }
2909 #endif /* CONFIG_IEEE80211R */
2910
2911
2912 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2913 struct unprot_deauth *e)
2914 {
2915 #ifdef CONFIG_IEEE80211W
2916 wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2917 "dropped: " MACSTR " -> " MACSTR
2918 " (reason code %u)",
2919 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2920 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2921 #endif /* CONFIG_IEEE80211W */
2922 }
2923
2924
2925 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2926 struct unprot_disassoc *e)
2927 {
2928 #ifdef CONFIG_IEEE80211W
2929 wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2930 "dropped: " MACSTR " -> " MACSTR
2931 " (reason code %u)",
2932 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2933 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2934 #endif /* CONFIG_IEEE80211W */
2935 }
2936
2937
2938 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
2939 u16 reason_code, int locally_generated,
2940 const u8 *ie, size_t ie_len, int deauth)
2941 {
2942 #ifdef CONFIG_AP
2943 if (wpa_s->ap_iface && addr) {
2944 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
2945 return;
2946 }
2947
2948 if (wpa_s->ap_iface) {
2949 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
2950 return;
2951 }
2952 #endif /* CONFIG_AP */
2953
2954 if (!locally_generated)
2955 wpa_s->own_disconnect_req = 0;
2956
2957 wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
2958
2959 if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2960 ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2961 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2962 eapol_sm_failed(wpa_s->eapol))) &&
2963 !wpa_s->eap_expected_failure))
2964 wpas_auth_failed(wpa_s, "AUTH_FAILED");
2965
2966 #ifdef CONFIG_P2P
2967 if (deauth && reason_code > 0) {
2968 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
2969 locally_generated) > 0) {
2970 /*
2971 * The interface was removed, so cannot continue
2972 * processing any additional operations after this.
2973 */
2974 return;
2975 }
2976 }
2977 #endif /* CONFIG_P2P */
2978
2979 wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2980 locally_generated);
2981 }
2982
2983
2984 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
2985 struct disassoc_info *info)
2986 {
2987 u16 reason_code = 0;
2988 int locally_generated = 0;
2989 const u8 *addr = NULL;
2990 const u8 *ie = NULL;
2991 size_t ie_len = 0;
2992
2993 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2994
2995 if (info) {
2996 addr = info->addr;
2997 ie = info->ie;
2998 ie_len = info->ie_len;
2999 reason_code = info->reason_code;
3000 locally_generated = info->locally_generated;
3001 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
3002 locally_generated ? " (locally generated)" : "");
3003 if (addr)
3004 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
3005 MAC2STR(addr));
3006 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
3007 ie, ie_len);
3008 }
3009
3010 #ifdef CONFIG_AP
3011 if (wpa_s->ap_iface && info && info->addr) {
3012 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
3013 return;
3014 }
3015
3016 if (wpa_s->ap_iface) {
3017 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
3018 return;
3019 }
3020 #endif /* CONFIG_AP */
3021
3022 #ifdef CONFIG_P2P
3023 if (info) {
3024 wpas_p2p_disassoc_notif(
3025 wpa_s, info->addr, reason_code, info->ie, info->ie_len,
3026 locally_generated);
3027 }
3028 #endif /* CONFIG_P2P */
3029
3030 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3031 sme_event_disassoc(wpa_s, info);
3032
3033 wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
3034 ie, ie_len, 0);
3035 }
3036
3037
3038 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
3039 struct deauth_info *info)
3040 {
3041 u16 reason_code = 0;
3042 int locally_generated = 0;
3043 const u8 *addr = NULL;
3044 const u8 *ie = NULL;
3045 size_t ie_len = 0;
3046
3047 wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
3048
3049 if (info) {
3050 addr = info->addr;
3051 ie = info->ie;
3052 ie_len = info->ie_len;
3053 reason_code = info->reason_code;
3054 locally_generated = info->locally_generated;
3055 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
3056 reason_code,
3057 locally_generated ? " (locally generated)" : "");
3058 if (addr) {
3059 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
3060 MAC2STR(addr));
3061 }
3062 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
3063 ie, ie_len);
3064 }
3065
3066 wpa_reset_ft_completed(wpa_s->wpa);
3067
3068 wpas_event_disconnect(wpa_s, addr, reason_code,
3069 locally_generated, ie, ie_len, 1);
3070 }
3071
3072
3073 static const char * reg_init_str(enum reg_change_initiator init)
3074 {
3075 switch (init) {
3076 case REGDOM_SET_BY_CORE:
3077 return "CORE";
3078 case REGDOM_SET_BY_USER:
3079 return "USER";
3080 case REGDOM_SET_BY_DRIVER:
3081 return "DRIVER";
3082 case REGDOM_SET_BY_COUNTRY_IE:
3083 return "COUNTRY_IE";
3084 case REGDOM_BEACON_HINT:
3085 return "BEACON_HINT";
3086 }
3087 return "?";
3088 }
3089
3090
3091 static const char * reg_type_str(enum reg_type type)
3092 {
3093 switch (type) {
3094 case REGDOM_TYPE_UNKNOWN:
3095 return "UNKNOWN";
3096 case REGDOM_TYPE_COUNTRY:
3097 return "COUNTRY";
3098 case REGDOM_TYPE_WORLD:
3099 return "WORLD";
3100 case REGDOM_TYPE_CUSTOM_WORLD:
3101 return "CUSTOM_WORLD";
3102 case REGDOM_TYPE_INTERSECTION:
3103 return "INTERSECTION";
3104 }
3105 return "?";
3106 }
3107
3108
3109 static void wpa_supplicant_update_channel_list(
3110 struct wpa_supplicant *wpa_s, struct channel_list_changed *info)
3111 {
3112 struct wpa_supplicant *ifs;
3113
3114 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s",
3115 reg_init_str(info->initiator), reg_type_str(info->type),
3116 info->alpha2[0] ? " alpha2=" : "",
3117 info->alpha2[0] ? info->alpha2 : "");
3118
3119 if (wpa_s->drv_priv == NULL)
3120 return; /* Ignore event during drv initialization */
3121
3122 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
3123 radio_list) {
3124 wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
3125 ifs->ifname);
3126 free_hw_features(ifs);
3127 ifs->hw.modes = wpa_drv_get_hw_feature_data(
3128 ifs, &ifs->hw.num_modes, &ifs->hw.flags);
3129 }
3130
3131 /* Restart sched_scan with updated channel list */
3132 if (wpa_s->sched_scanning) {
3133 wpa_dbg(wpa_s, MSG_DEBUG,
3134 "Channel list changed restart sched scan.");
3135 wpa_supplicant_cancel_sched_scan(wpa_s);
3136 wpa_supplicant_req_scan(wpa_s, 0, 0);
3137 }
3138
3139 wpas_p2p_update_channel_list(wpa_s, WPAS_P2P_CHANNEL_UPDATE_DRIVER);
3140 }
3141
3142
3143 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
3144 const u8 *frame, size_t len, int freq,
3145 int rssi)
3146 {
3147 const struct ieee80211_mgmt *mgmt;
3148 const u8 *payload;
3149 size_t plen;
3150 u8 category;
3151
3152 if (len < IEEE80211_HDRLEN + 2)
3153 return;
3154
3155 mgmt = (const struct ieee80211_mgmt *) frame;
3156 payload = frame + IEEE80211_HDRLEN;
3157 category = *payload++;
3158 plen = len - IEEE80211_HDRLEN - 1;
3159
3160 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
3161 " Category=%u DataLen=%d freq=%d MHz",
3162 MAC2STR(mgmt->sa), category, (int) plen, freq);
3163
3164 if (category == WLAN_ACTION_WMM) {
3165 wmm_ac_rx_action(wpa_s, mgmt->da, mgmt->sa, payload, plen);
3166 return;
3167 }
3168
3169 #ifdef CONFIG_IEEE80211R
3170 if (category == WLAN_ACTION_FT) {
3171 ft_rx_action(wpa_s, payload, plen);
3172 return;
3173 }
3174 #endif /* CONFIG_IEEE80211R */
3175
3176 #ifdef CONFIG_IEEE80211W
3177 #ifdef CONFIG_SME
3178 if (category == WLAN_ACTION_SA_QUERY) {
3179 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
3180 return;
3181 }
3182 #endif /* CONFIG_SME */
3183 #endif /* CONFIG_IEEE80211W */
3184
3185 #ifdef CONFIG_WNM
3186 if (mgmt->u.action.category == WLAN_ACTION_WNM) {
3187 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
3188 return;
3189 }
3190 #endif /* CONFIG_WNM */
3191
3192 #ifdef CONFIG_GAS
3193 if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
3194 mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
3195 gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
3196 mgmt->u.action.category,
3197 payload, plen, freq) == 0)
3198 return;
3199 #endif /* CONFIG_GAS */
3200
3201 #ifdef CONFIG_TDLS
3202 if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
3203 payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
3204 wpa_dbg(wpa_s, MSG_DEBUG,
3205 "TDLS: Received Discovery Response from " MACSTR,
3206 MAC2STR(mgmt->sa));
3207 return;
3208 }
3209 #endif /* CONFIG_TDLS */
3210
3211 #ifdef CONFIG_INTERWORKING
3212 if (category == WLAN_ACTION_QOS && plen >= 1 &&
3213 payload[0] == QOS_QOS_MAP_CONFIG) {
3214 const u8 *pos = payload + 1;
3215 size_t qlen = plen - 1;
3216 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
3217 MACSTR, MAC2STR(mgmt->sa));
3218 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
3219 qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
3220 pos[1] <= qlen - 2 && pos[1] >= 16)
3221 wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
3222 return;
3223 }
3224 #endif /* CONFIG_INTERWORKING */
3225
3226 if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
3227 payload[0] == WLAN_RRM_NEIGHBOR_REPORT_RESPONSE) {
3228 wpas_rrm_process_neighbor_rep(wpa_s, payload + 1, plen - 1);
3229 return;
3230 }
3231
3232 if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
3233 payload[0] == WLAN_RRM_LINK_MEASUREMENT_REQUEST) {
3234 wpas_rrm_handle_link_measurement_request(wpa_s, mgmt->sa,
3235 payload + 1, plen - 1,
3236 rssi);
3237 return;
3238 }
3239
3240 #ifdef CONFIG_FST
3241 if (mgmt->u.action.category == WLAN_ACTION_FST && wpa_s->fst) {
3242 fst_rx_action(wpa_s->fst, mgmt, len);
3243 return;
3244 }
3245 #endif /* CONFIG_FST */
3246
3247 wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
3248 category, payload, plen, freq);
3249 if (wpa_s->ifmsh)
3250 mesh_mpm_action_rx(wpa_s, mgmt, len);
3251 }
3252
3253
3254 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
3255 union wpa_event_data *event)
3256 {
3257 struct wpa_freq_range_list *list;
3258 char *str = NULL;
3259
3260 list = &event->freq_range;
3261
3262 if (list->num)
3263 str = freq_range_list_str(list);
3264 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
3265 str ? str : "");
3266
3267 #ifdef CONFIG_P2P
3268 if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
3269 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
3270 __func__);
3271 } else {
3272 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
3273
3274 /*
3275 * The update channel flow will also take care of moving a GO
3276 * from the unsafe frequency if needed.
3277 */
3278 wpas_p2p_update_channel_list(wpa_s,
3279 WPAS_P2P_CHANNEL_UPDATE_AVOID);
3280 }
3281 #endif /* CONFIG_P2P */
3282
3283 os_free(str);
3284 }
3285
3286
3287 static void wpa_supplicant_event_assoc_auth(struct wpa_supplicant *wpa_s,
3288 union wpa_event_data *data)
3289 {
3290 wpa_dbg(wpa_s, MSG_DEBUG,
3291 "Connection authorized by device, previous state %d",
3292 wpa_s->wpa_state);
3293 if (wpa_s->wpa_state == WPA_ASSOCIATED) {
3294 wpa_supplicant_cancel_auth_timeout(wpa_s);
3295 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
3296 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
3297 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
3298 }
3299 wpa_sm_set_rx_replay_ctr(wpa_s->wpa, data->assoc_info.key_replay_ctr);
3300 wpa_sm_set_ptk_kck_kek(wpa_s->wpa, data->assoc_info.ptk_kck,
3301 data->assoc_info.ptk_kck_len,
3302 data->assoc_info.ptk_kek,
3303 data->assoc_info.ptk_kek_len);
3304 }
3305
3306
3307 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
3308 union wpa_event_data *data)
3309 {
3310 struct wpa_supplicant *wpa_s = ctx;
3311 int resched;
3312
3313 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
3314 event != EVENT_INTERFACE_ENABLED &&
3315 event != EVENT_INTERFACE_STATUS &&
3316 event != EVENT_SCHED_SCAN_STOPPED) {
3317 wpa_dbg(wpa_s, MSG_DEBUG,
3318 "Ignore event %s (%d) while interface is disabled",
3319 event_to_string(event), event);
3320 return;
3321 }
3322
3323 #ifndef CONFIG_NO_STDOUT_DEBUG
3324 {
3325 int level = MSG_DEBUG;
3326
3327 if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
3328 const struct ieee80211_hdr *hdr;
3329 u16 fc;
3330 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
3331 fc = le_to_host16(hdr->frame_control);
3332 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3333 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
3334 level = MSG_EXCESSIVE;
3335 }
3336
3337 wpa_dbg(wpa_s, level, "Event %s (%d) received",
3338 event_to_string(event), event);
3339 }
3340 #endif /* CONFIG_NO_STDOUT_DEBUG */
3341
3342 switch (event) {
3343 case EVENT_AUTH:
3344 #ifdef CONFIG_FST
3345 if (!wpas_fst_update_mbie(wpa_s, data->auth.ies,
3346 data->auth.ies_len))
3347 wpa_printf(MSG_DEBUG,
3348 "FST: MB IEs updated from auth IE");
3349 #endif /* CONFIG_FST */
3350 sme_event_auth(wpa_s, data);
3351 break;
3352 case EVENT_ASSOC:
3353 wpa_supplicant_event_assoc(wpa_s, data);
3354 if (data && data->assoc_info.authorized)
3355 wpa_supplicant_event_assoc_auth(wpa_s, data);
3356 if (data) {
3357 wpa_msg(wpa_s, MSG_INFO,
3358 WPA_EVENT_SUBNET_STATUS_UPDATE "status=%u",
3359 data->assoc_info.subnet_status);
3360 }
3361 break;
3362 case EVENT_DISASSOC:
3363 wpas_event_disassoc(wpa_s,
3364 data ? &data->disassoc_info : NULL);
3365 break;
3366 case EVENT_DEAUTH:
3367 wpas_event_deauth(wpa_s,
3368 data ? &data->deauth_info : NULL);
3369 break;
3370 case EVENT_MICHAEL_MIC_FAILURE:
3371 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
3372 break;
3373 #ifndef CONFIG_NO_SCAN_PROCESSING
3374 case EVENT_SCAN_STARTED:
3375 if (wpa_s->own_scan_requested ||
3376 (data && !data->scan_info.external_scan)) {
3377 struct os_reltime diff;
3378
3379 os_get_reltime(&wpa_s->scan_start_time);
3380 os_reltime_sub(&wpa_s->scan_start_time,
3381 &wpa_s->scan_trigger_time, &diff);
3382 wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
3383 diff.sec, diff.usec);
3384 wpa_s->own_scan_requested = 0;
3385 wpa_s->own_scan_running = 1;
3386 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
3387 wpa_s->manual_scan_use_id) {
3388 wpa_msg_ctrl(wpa_s, MSG_INFO,
3389 WPA_EVENT_SCAN_STARTED "id=%u",
3390 wpa_s->manual_scan_id);
3391 } else {
3392 wpa_msg_ctrl(wpa_s, MSG_INFO,
3393 WPA_EVENT_SCAN_STARTED);
3394 }
3395 } else {
3396 wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
3397 wpa_s->radio->external_scan_running = 1;
3398 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
3399 }
3400 break;
3401 case EVENT_SCAN_RESULTS:
3402 if (!(data && data->scan_info.external_scan) &&
3403 os_reltime_initialized(&wpa_s->scan_start_time)) {
3404 struct os_reltime now, diff;
3405 os_get_reltime(&now);
3406 os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
3407 wpa_s->scan_start_time.sec = 0;
3408 wpa_s->scan_start_time.usec = 0;
3409 wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
3410 diff.sec, diff.usec);
3411 }
3412 if (wpa_supplicant_event_scan_results(wpa_s, data))
3413 break; /* interface may have been removed */
3414 if (!(data && data->scan_info.external_scan))
3415 wpa_s->own_scan_running = 0;
3416 if (data && data->scan_info.nl_scan_event)
3417 wpa_s->radio->external_scan_running = 0;
3418 radio_work_check_next(wpa_s);
3419 break;
3420 #endif /* CONFIG_NO_SCAN_PROCESSING */
3421 case EVENT_ASSOCINFO:
3422 wpa_supplicant_event_associnfo(wpa_s, data);
3423 break;
3424 case EVENT_INTERFACE_STATUS:
3425 wpa_supplicant_event_interface_status(wpa_s, data);
3426 break;
3427 case EVENT_PMKID_CANDIDATE:
3428 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
3429 break;
3430 #ifdef CONFIG_PEERKEY
3431 case EVENT_STKSTART:
3432 wpa_supplicant_event_stkstart(wpa_s, data);
3433 break;
3434 #endif /* CONFIG_PEERKEY */
3435 #ifdef CONFIG_TDLS
3436 case EVENT_TDLS:
3437 wpa_supplicant_event_tdls(wpa_s, data);
3438 break;
3439 #endif /* CONFIG_TDLS */
3440 #ifdef CONFIG_WNM
3441 case EVENT_WNM:
3442 wpa_supplicant_event_wnm(wpa_s, data);
3443 break;
3444 #endif /* CONFIG_WNM */
3445 #ifdef CONFIG_IEEE80211R
3446 case EVENT_FT_RESPONSE:
3447 wpa_supplicant_event_ft_response(wpa_s, data);
3448 break;
3449 #endif /* CONFIG_IEEE80211R */
3450 #ifdef CONFIG_IBSS_RSN
3451 case EVENT_IBSS_RSN_START:
3452 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
3453 break;
3454 #endif /* CONFIG_IBSS_RSN */
3455 case EVENT_ASSOC_REJECT:
3456 if (data->assoc_reject.bssid)
3457 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3458 "bssid=" MACSTR " status_code=%u",
3459 MAC2STR(data->assoc_reject.bssid),
3460 data->assoc_reject.status_code);
3461 else
3462 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3463 "status_code=%u",
3464 data->assoc_reject.status_code);
3465 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3466 sme_event_assoc_reject(wpa_s, data);
3467 else {
3468 const u8 *bssid = data->assoc_reject.bssid;
3469 if (bssid == NULL || is_zero_ether_addr(bssid))
3470 bssid = wpa_s->pending_bssid;
3471 wpas_connection_failed(wpa_s, bssid);
3472 wpa_supplicant_mark_disassoc(wpa_s);
3473 }
3474 break;
3475 case EVENT_AUTH_TIMED_OUT:
3476 /* It is possible to get this event from earlier connection */
3477 if (wpa_s->current_ssid &&
3478 wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3479 wpa_dbg(wpa_s, MSG_DEBUG,
3480 "Ignore AUTH_TIMED_OUT in mesh configuration");
3481 break;
3482 }
3483 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3484 sme_event_auth_timed_out(wpa_s, data);
3485 break;
3486 case EVENT_ASSOC_TIMED_OUT:
3487 /* It is possible to get this event from earlier connection */
3488 if (wpa_s->current_ssid &&
3489 wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3490 wpa_dbg(wpa_s, MSG_DEBUG,
3491 "Ignore ASSOC_TIMED_OUT in mesh configuration");
3492 break;
3493 }
3494 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3495 sme_event_assoc_timed_out(wpa_s, data);
3496 break;
3497 case EVENT_TX_STATUS:
3498 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
3499 " type=%d stype=%d",
3500 MAC2STR(data->tx_status.dst),
3501 data->tx_status.type, data->tx_status.stype);
3502 #ifdef CONFIG_AP
3503 if (wpa_s->ap_iface == NULL) {
3504 #ifdef CONFIG_OFFCHANNEL
3505 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3506 data->tx_status.stype == WLAN_FC_STYPE_ACTION)
3507 offchannel_send_action_tx_status(
3508 wpa_s, data->tx_status.dst,
3509 data->tx_status.data,
3510 data->tx_status.data_len,
3511 data->tx_status.ack ?
3512 OFFCHANNEL_SEND_ACTION_SUCCESS :
3513 OFFCHANNEL_SEND_ACTION_NO_ACK);
3514 #endif /* CONFIG_OFFCHANNEL */
3515 break;
3516 }
3517 #endif /* CONFIG_AP */
3518 #ifdef CONFIG_OFFCHANNEL
3519 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
3520 MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
3521 /*
3522 * Catch TX status events for Action frames we sent via group
3523 * interface in GO mode.
3524 */
3525 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3526 data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
3527 os_memcmp(wpa_s->parent->pending_action_dst,
3528 data->tx_status.dst, ETH_ALEN) == 0) {
3529 offchannel_send_action_tx_status(
3530 wpa_s->parent, data->tx_status.dst,
3531 data->tx_status.data,
3532 data->tx_status.data_len,
3533 data->tx_status.ack ?
3534 OFFCHANNEL_SEND_ACTION_SUCCESS :
3535 OFFCHANNEL_SEND_ACTION_NO_ACK);
3536 break;
3537 }
3538 #endif /* CONFIG_OFFCHANNEL */
3539 #ifdef CONFIG_AP
3540 switch (data->tx_status.type) {
3541 case WLAN_FC_TYPE_MGMT:
3542 ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
3543 data->tx_status.data_len,
3544 data->tx_status.stype,
3545 data->tx_status.ack);
3546 break;
3547 case WLAN_FC_TYPE_DATA:
3548 ap_tx_status(wpa_s, data->tx_status.dst,
3549 data->tx_status.data,
3550 data->tx_status.data_len,
3551 data->tx_status.ack);
3552 break;
3553 }
3554 #endif /* CONFIG_AP */
3555 break;
3556 #ifdef CONFIG_AP
3557 case EVENT_EAPOL_TX_STATUS:
3558 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
3559 data->eapol_tx_status.data,
3560 data->eapol_tx_status.data_len,
3561 data->eapol_tx_status.ack);
3562 break;
3563 case EVENT_DRIVER_CLIENT_POLL_OK:
3564 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3565 break;
3566 case EVENT_RX_FROM_UNKNOWN:
3567 if (wpa_s->ap_iface == NULL)
3568 break;
3569 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3570 data->rx_from_unknown.wds);
3571 break;
3572 case EVENT_CH_SWITCH:
3573 if (!data || !wpa_s->current_ssid)
3574 break;
3575
3576 wpa_s->assoc_freq = data->ch_switch.freq;
3577 wpa_s->current_ssid->frequency = data->ch_switch.freq;
3578
3579 if (wpa_s->current_ssid->mode == WPAS_MODE_AP ||
3580 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO ||
3581 wpa_s->current_ssid->mode ==
3582 WPAS_MODE_P2P_GROUP_FORMATION) {
3583 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3584 data->ch_switch.ht_enabled,
3585 data->ch_switch.ch_offset,
3586 data->ch_switch.ch_width,
3587 data->ch_switch.cf1,
3588 data->ch_switch.cf2);
3589 }
3590
3591 wpas_p2p_update_channel_list(wpa_s, WPAS_P2P_CHANNEL_UPDATE_CS);
3592 break;
3593 #ifdef NEED_AP_MLME
3594 case EVENT_DFS_RADAR_DETECTED:
3595 if (data)
3596 wpas_event_dfs_radar_detected(wpa_s, &data->dfs_event);
3597 break;
3598 case EVENT_DFS_CAC_STARTED:
3599 if (data)
3600 wpas_event_dfs_cac_started(wpa_s, &data->dfs_event);
3601 break;
3602 case EVENT_DFS_CAC_FINISHED:
3603 if (data)
3604 wpas_event_dfs_cac_finished(wpa_s, &data->dfs_event);
3605 break;
3606 case EVENT_DFS_CAC_ABORTED:
3607 if (data)
3608 wpas_event_dfs_cac_aborted(wpa_s, &data->dfs_event);
3609 break;
3610 case EVENT_DFS_NOP_FINISHED:
3611 if (data)
3612 wpas_event_dfs_cac_nop_finished(wpa_s,
3613 &data->dfs_event);
3614 break;
3615 #endif /* NEED_AP_MLME */
3616 #endif /* CONFIG_AP */
3617 case EVENT_RX_MGMT: {
3618 u16 fc, stype;
3619 const struct ieee80211_mgmt *mgmt;
3620
3621 #ifdef CONFIG_TESTING_OPTIONS
3622 if (wpa_s->ext_mgmt_frame_handling) {
3623 struct rx_mgmt *rx = &data->rx_mgmt;
3624 size_t hex_len = 2 * rx->frame_len + 1;
3625 char *hex = os_malloc(hex_len);
3626 if (hex) {
3627 wpa_snprintf_hex(hex, hex_len,
3628 rx->frame, rx->frame_len);
3629 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s",
3630 rx->freq, rx->datarate, rx->ssi_signal,
3631 hex);
3632 os_free(hex);
3633 }
3634 break;
3635 }
3636 #endif /* CONFIG_TESTING_OPTIONS */
3637
3638 mgmt = (const struct ieee80211_mgmt *)
3639 data->rx_mgmt.frame;
3640 fc = le_to_host16(mgmt->frame_control);
3641 stype = WLAN_FC_GET_STYPE(fc);
3642
3643 #ifdef CONFIG_AP
3644 if (wpa_s->ap_iface == NULL) {
3645 #endif /* CONFIG_AP */
3646 #ifdef CONFIG_P2P
3647 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3648 data->rx_mgmt.frame_len > 24) {
3649 const u8 *src = mgmt->sa;
3650 const u8 *ie = mgmt->u.probe_req.variable;
3651 size_t ie_len = data->rx_mgmt.frame_len -
3652 (mgmt->u.probe_req.variable -
3653 data->rx_mgmt.frame);
3654 wpas_p2p_probe_req_rx(
3655 wpa_s, src, mgmt->da,
3656 mgmt->bssid, ie, ie_len,
3657 data->rx_mgmt.freq,
3658 data->rx_mgmt.ssi_signal);
3659 break;
3660 }
3661 #endif /* CONFIG_P2P */
3662 #ifdef CONFIG_IBSS_RSN
3663 if (wpa_s->current_ssid &&
3664 wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
3665 stype == WLAN_FC_STYPE_AUTH &&
3666 data->rx_mgmt.frame_len >= 30) {
3667 wpa_supplicant_event_ibss_auth(wpa_s, data);
3668 break;
3669 }
3670 #endif /* CONFIG_IBSS_RSN */
3671
3672 if (stype == WLAN_FC_STYPE_ACTION) {
3673 wpas_event_rx_mgmt_action(
3674 wpa_s, data->rx_mgmt.frame,
3675 data->rx_mgmt.frame_len,
3676 data->rx_mgmt.freq,
3677 data->rx_mgmt.ssi_signal);
3678 break;
3679 }
3680
3681 if (wpa_s->ifmsh) {
3682 mesh_mpm_mgmt_rx(wpa_s, &data->rx_mgmt);
3683 break;
3684 }
3685
3686 wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3687 "management frame in non-AP mode");
3688 break;
3689 #ifdef CONFIG_AP
3690 }
3691
3692 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3693 data->rx_mgmt.frame_len > 24) {
3694 const u8 *ie = mgmt->u.probe_req.variable;
3695 size_t ie_len = data->rx_mgmt.frame_len -
3696 (mgmt->u.probe_req.variable -
3697 data->rx_mgmt.frame);
3698
3699 wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3700 mgmt->bssid, ie, ie_len,
3701 data->rx_mgmt.ssi_signal);
3702 }
3703
3704 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3705 #endif /* CONFIG_AP */
3706 break;
3707 }
3708 case EVENT_RX_PROBE_REQ:
3709 if (data->rx_probe_req.sa == NULL ||
3710 data->rx_probe_req.ie == NULL)
3711 break;
3712 #ifdef CONFIG_AP
3713 if (wpa_s->ap_iface) {
3714 hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3715 data->rx_probe_req.sa,
3716 data->rx_probe_req.da,
3717 data->rx_probe_req.bssid,
3718 data->rx_probe_req.ie,
3719 data->rx_probe_req.ie_len,
3720 data->rx_probe_req.ssi_signal);
3721 break;
3722 }
3723 #endif /* CONFIG_AP */
3724 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3725 data->rx_probe_req.da,
3726 data->rx_probe_req.bssid,
3727 data->rx_probe_req.ie,
3728 data->rx_probe_req.ie_len,
3729 0,
3730 data->rx_probe_req.ssi_signal);
3731 break;
3732 case EVENT_REMAIN_ON_CHANNEL:
3733 #ifdef CONFIG_OFFCHANNEL
3734 offchannel_remain_on_channel_cb(
3735 wpa_s, data->remain_on_channel.freq,
3736 data->remain_on_channel.duration);
3737 #endif /* CONFIG_OFFCHANNEL */
3738 wpas_p2p_remain_on_channel_cb(
3739 wpa_s, data->remain_on_channel.freq,
3740 data->remain_on_channel.duration);
3741 break;
3742 case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3743 #ifdef CONFIG_OFFCHANNEL
3744 offchannel_cancel_remain_on_channel_cb(
3745 wpa_s, data->remain_on_channel.freq);
3746 #endif /* CONFIG_OFFCHANNEL */
3747 wpas_p2p_cancel_remain_on_channel_cb(
3748 wpa_s, data->remain_on_channel.freq);
3749 break;
3750 case EVENT_EAPOL_RX:
3751 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3752 data->eapol_rx.data,
3753 data->eapol_rx.data_len);
3754 break;
3755 case EVENT_SIGNAL_CHANGE:
3756 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE
3757 "above=%d signal=%d noise=%d txrate=%d",
3758 data->signal_change.above_threshold,
3759 data->signal_change.current_signal,
3760 data->signal_change.current_noise,
3761 data->signal_change.current_txrate);
3762 wpa_bss_update_level(wpa_s->current_bss,
3763 data->signal_change.current_signal);
3764 bgscan_notify_signal_change(
3765 wpa_s, data->signal_change.above_threshold,
3766 data->signal_change.current_signal,
3767 data->signal_change.current_noise,
3768 data->signal_change.current_txrate);
3769 break;
3770 case EVENT_INTERFACE_ENABLED:
3771 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3772 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3773 wpa_supplicant_update_mac_addr(wpa_s);
3774 if (wpa_s->p2p_mgmt) {
3775 wpa_supplicant_set_state(wpa_s,
3776 WPA_DISCONNECTED);
3777 break;
3778 }
3779
3780 #ifdef CONFIG_AP
3781 if (!wpa_s->ap_iface) {
3782 wpa_supplicant_set_state(wpa_s,
3783 WPA_DISCONNECTED);
3784 wpa_s->scan_req = NORMAL_SCAN_REQ;
3785 wpa_supplicant_req_scan(wpa_s, 0, 0);
3786 } else
3787 wpa_supplicant_set_state(wpa_s,
3788 WPA_COMPLETED);
3789 #else /* CONFIG_AP */
3790 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3791 wpa_supplicant_req_scan(wpa_s, 0, 0);
3792 #endif /* CONFIG_AP */
3793 }
3794 break;
3795 case EVENT_INTERFACE_DISABLED:
3796 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3797 #ifdef CONFIG_P2P
3798 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3799 (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3800 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3801 /*
3802 * Mark interface disabled if this happens to end up not
3803 * being removed as a separate P2P group interface.
3804 */
3805 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3806 /*
3807 * The interface was externally disabled. Remove
3808 * it assuming an external entity will start a
3809 * new session if needed.
3810 */
3811 if (wpa_s->current_ssid &&
3812 wpa_s->current_ssid->p2p_group)
3813 wpas_p2p_interface_unavailable(wpa_s);
3814 else
3815 wpas_p2p_disconnect(wpa_s);
3816 /*
3817 * wpa_s instance may have been freed, so must not use
3818 * it here anymore.
3819 */
3820 break;
3821 }
3822 if (wpa_s->p2p_scan_work && wpa_s->global->p2p &&
3823 p2p_in_progress(wpa_s->global->p2p) > 1) {
3824 /* This radio work will be cancelled, so clear P2P
3825 * state as well.
3826 */
3827 p2p_stop_find(wpa_s->global->p2p);
3828 }
3829 #endif /* CONFIG_P2P */
3830
3831 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
3832 /*
3833 * Indicate disconnection to keep ctrl_iface events
3834 * consistent.
3835 */
3836 wpa_supplicant_event_disassoc(
3837 wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1);
3838 }
3839 wpa_supplicant_mark_disassoc(wpa_s);
3840 radio_remove_works(wpa_s, NULL, 0);
3841
3842 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3843 break;
3844 case EVENT_CHANNEL_LIST_CHANGED:
3845 wpa_supplicant_update_channel_list(
3846 wpa_s, &data->channel_list_changed);
3847 break;
3848 case EVENT_INTERFACE_UNAVAILABLE:
3849 wpas_p2p_interface_unavailable(wpa_s);
3850 break;
3851 case EVENT_BEST_CHANNEL:
3852 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3853 "(%d %d %d)",
3854 data->best_chan.freq_24, data->best_chan.freq_5,
3855 data->best_chan.freq_overall);
3856 wpa_s->best_24_freq = data->best_chan.freq_24;
3857 wpa_s->best_5_freq = data->best_chan.freq_5;
3858 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3859 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3860 data->best_chan.freq_5,
3861 data->best_chan.freq_overall);
3862 break;
3863 case EVENT_UNPROT_DEAUTH:
3864 wpa_supplicant_event_unprot_deauth(wpa_s,
3865 &data->unprot_deauth);
3866 break;
3867 case EVENT_UNPROT_DISASSOC:
3868 wpa_supplicant_event_unprot_disassoc(wpa_s,
3869 &data->unprot_disassoc);
3870 break;
3871 case EVENT_STATION_LOW_ACK:
3872 #ifdef CONFIG_AP
3873 if (wpa_s->ap_iface && data)
3874 hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3875 data->low_ack.addr);
3876 #endif /* CONFIG_AP */
3877 #ifdef CONFIG_TDLS
3878 if (data)
3879 wpa_tdls_disable_unreachable_link(wpa_s->wpa,
3880 data->low_ack.addr);
3881 #endif /* CONFIG_TDLS */
3882 break;
3883 case EVENT_IBSS_PEER_LOST:
3884 #ifdef CONFIG_IBSS_RSN
3885 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3886 #endif /* CONFIG_IBSS_RSN */
3887 break;
3888 case EVENT_DRIVER_GTK_REKEY:
3889 if (os_memcmp(data->driver_gtk_rekey.bssid,
3890 wpa_s->bssid, ETH_ALEN))
3891 break;
3892 if (!wpa_s->wpa)
3893 break;
3894 wpa_sm_update_replay_ctr(wpa_s->wpa,
3895 data->driver_gtk_rekey.replay_ctr);
3896 break;
3897 case EVENT_SCHED_SCAN_STOPPED:
3898 wpa_s->pno = 0;
3899 wpa_s->sched_scanning = 0;
3900 resched = wpa_s->scanning;
3901 wpa_supplicant_notify_scanning(wpa_s, 0);
3902
3903 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3904 break;
3905
3906 /*
3907 * Start a new sched scan to continue searching for more SSIDs
3908 * either if timed out or PNO schedule scan is pending.
3909 */
3910 if (wpa_s->sched_scan_timed_out) {
3911 wpa_supplicant_req_sched_scan(wpa_s);
3912 } else if (wpa_s->pno_sched_pending) {
3913 wpa_s->pno_sched_pending = 0;
3914 wpas_start_pno(wpa_s);
3915 } else if (resched) {
3916 wpa_supplicant_req_scan(wpa_s, 0, 0);
3917 }
3918
3919 break;
3920 case EVENT_WPS_BUTTON_PUSHED:
3921 #ifdef CONFIG_WPS
3922 wpas_wps_start_pbc(wpa_s, NULL, 0);
3923 #endif /* CONFIG_WPS */
3924 break;
3925 case EVENT_AVOID_FREQUENCIES:
3926 wpa_supplicant_notify_avoid_freq(wpa_s, data);
3927 break;
3928 case EVENT_CONNECT_FAILED_REASON:
3929 #ifdef CONFIG_AP
3930 if (!wpa_s->ap_iface || !data)
3931 break;
3932 hostapd_event_connect_failed_reason(
3933 wpa_s->ap_iface->bss[0],
3934 data->connect_failed_reason.addr,
3935 data->connect_failed_reason.code);
3936 #endif /* CONFIG_AP */
3937 break;
3938 case EVENT_NEW_PEER_CANDIDATE:
3939 #ifdef CONFIG_MESH
3940 if (!wpa_s->ifmsh || !data)
3941 break;
3942 wpa_mesh_notify_peer(wpa_s, data->mesh_peer.peer,
3943 data->mesh_peer.ies,
3944 data->mesh_peer.ie_len);
3945 #endif /* CONFIG_MESH */
3946 break;
3947 case EVENT_SURVEY:
3948 #ifdef CONFIG_AP
3949 if (!wpa_s->ap_iface)
3950 break;
3951 hostapd_event_get_survey(wpa_s->ap_iface,
3952 &data->survey_results);
3953 #endif /* CONFIG_AP */
3954 break;
3955 case EVENT_ACS_CHANNEL_SELECTED:
3956 #ifdef CONFIG_ACS
3957 if (!wpa_s->ap_iface)
3958 break;
3959 hostapd_acs_channel_selected(wpa_s->ap_iface->bss[0],
3960 &data->acs_selected_channels);
3961 #endif /* CONFIG_ACS */
3962 break;
3963 default:
3964 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3965 break;
3966 }
3967 }
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